File:  [LON-CAPA] / loncom / homework / grades.pm
Revision 1.767: download - view: text, annotated - select for diffs
Fri May 8 13:49:02 2020 UTC (3 years, 11 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD
- White space changes to improve readability
- Remove duplicate parentheses and surplus single quote.

    1: # The LearningOnline Network with CAPA
    2: # The LON-CAPA Grading handler
    3: #
    4: # $Id: grades.pm,v 1.767 2020/05/08 13:49:02 raeburn Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: 
   30: 
   31: package Apache::grades;
   32: use strict;
   33: use Apache::style;
   34: use Apache::lonxml;
   35: use Apache::lonnet;
   36: use Apache::loncommon;
   37: use Apache::lonhtmlcommon;
   38: use Apache::lonnavmaps;
   39: use Apache::lonhomework;
   40: use Apache::lonpickcode;
   41: use Apache::loncoursedata;
   42: use Apache::lonmsg();
   43: use Apache::Constants qw(:common :http);
   44: use Apache::lonlocal;
   45: use Apache::lonenc;
   46: use Apache::lonstathelpers;
   47: use Apache::lonquickgrades;
   48: use Apache::bridgetask();
   49: use Apache::lontexconvert();
   50: use String::Similarity;
   51: use HTML::Parser();
   52: use File::MMagic;
   53: use LONCAPA;
   54: 
   55: use POSIX qw(floor);
   56: 
   57: 
   58: 
   59: my %perm=();
   60: my %old_essays=();
   61: 
   62: #  These variables are used to recover from ssi errors
   63: 
   64: my $ssi_retries = 5;
   65: my $ssi_error;
   66: my $ssi_error_resource;
   67: my $ssi_error_message;
   68: 
   69: 
   70: sub ssi_with_retries {
   71:     my ($resource, $retries, %form) = @_;
   72:     my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);
   73:     if ($response->is_error) {
   74: 	$ssi_error          = 1;
   75: 	$ssi_error_resource = $resource;
   76: 	$ssi_error_message  = $response->code . " " . $response->message;
   77:     }
   78: 
   79:     return $content;
   80: 
   81: }
   82: #
   83: #  Prodcuces an ssi retry failure error message to the user:
   84: #
   85: 
   86: sub ssi_print_error {
   87:     my ($r) = @_;
   88:     my $helpurl = &Apache::loncommon::top_nav_help('Helpdesk');
   89:     $r->print('
   90: <br />
   91: <h2>'.&mt('An unrecoverable network error occurred:').'</h2>
   92: <p>
   93: '.&mt('Unable to retrieve a resource from a server:').'<br />
   94: '.&mt('Resource:').' '.$ssi_error_resource.'<br />
   95: '.&mt('Error:').' '.$ssi_error_message.'
   96: </p>
   97: <p>'.
   98: &mt('It is recommended that you try again later, as this error may mean the server was just temporarily unavailable, or is down for maintenance.').'<br />'.
   99: &mt('If the error persists, please contact the [_1] for assistance.',$helpurl).
  100: '</p>');
  101:     return;
  102: }
  103: 
  104: #
  105: # --- Retrieve the parts from the metadata file.---
  106: # Returns an array of everything that the resources stores away
  107: #
  108: 
  109: sub getpartlist {
  110:     my ($symb,$errorref) = @_;
  111: 
  112:     my $navmap   = Apache::lonnavmaps::navmap->new();
  113:     unless (ref($navmap)) {
  114:         if (ref($errorref)) { 
  115:             $$errorref = 'navmap';
  116:             return;
  117:         }
  118:     }
  119:     my $res      = $navmap->getBySymb($symb);
  120:     my $partlist = $res->parts();
  121:     my $url      = $res->src();
  122:     my $toolsymb;
  123:     if ($url =~ /ext\.tool$/) {
  124:         $toolsymb = $symb;
  125:     }
  126:     my @metakeys = split(/,/,&Apache::lonnet::metadata($url,'keys',$toolsymb));
  127: 
  128:     my @stores;
  129:     foreach my $part (@{ $partlist }) {
  130: 	foreach my $key (@metakeys) {
  131: 	    if ($key =~ m/^stores_\Q$part\E_/) { push(@stores,$key); }
  132: 	}
  133:     }
  134:     return @stores;
  135: }
  136: 
  137: #--- Format fullname, username:domain if different for display
  138: #--- Use anywhere where the student names are listed
  139: sub nameUserString {
  140:     my ($type,$fullname,$uname,$udom) = @_;
  141:     if ($type eq 'header') {
  142: 	return '<b>&nbsp;'.&mt('Fullname').'&nbsp;</b><span class="LC_internal_info">('.&mt('Username').')</span>';
  143:     } else {
  144: 	return '&nbsp;'.$fullname.'<span class="LC_internal_info">&nbsp;('.$uname.
  145: 	    ($env{'user.domain'} eq $udom ? '' : ' ('.$udom.')').')</span>';
  146:     }
  147: }
  148: 
  149: #--- Get the partlist and the response type for a given problem. ---
  150: #--- Indicate if a response type is coded handgraded or not. ---
  151: #--- Sets response_error pointer to "1" if navmaps object broken ---
  152: sub response_type {
  153:     my ($symb,$response_error) = @_;
  154: 
  155:     my $navmap = Apache::lonnavmaps::navmap->new();
  156:     unless (ref($navmap)) {
  157:         if (ref($response_error)) {
  158:             $$response_error = 1;
  159:         }
  160:         return;
  161:     }
  162:     my $res = $navmap->getBySymb($symb);
  163:     unless (ref($res)) {
  164:         $$response_error = 1;
  165:         return;
  166:     }
  167:     my $partlist = $res->parts();
  168:     my %vPart = 
  169: 	map { $_ => 1 } (&Apache::loncommon::get_env_multiple('form.vPart'));
  170:     my (%response_types,%handgrade);
  171:     foreach my $part (@{ $partlist }) {
  172: 	next if (%vPart && !exists($vPart{$part}));
  173: 
  174: 	my @types = $res->responseType($part);
  175: 	my @ids = $res->responseIds($part);
  176: 	for (my $i=0; $i < scalar(@ids); $i++) {
  177: 	    $response_types{$part}{$ids[$i]} = $types[$i];
  178: 	    $handgrade{$part.'_'.$ids[$i]} = 
  179: 		&Apache::lonnet::EXT('resource.'.$part.'_'.$ids[$i].
  180: 				     '.handgrade',$symb);
  181: 	}
  182:     }
  183:     return ($partlist,\%handgrade,\%response_types);
  184: }
  185: 
  186: sub flatten_responseType {
  187:     my ($responseType) = @_;
  188:     my @part_response_id =
  189: 	map { 
  190: 	    my $part = $_;
  191: 	    map {
  192: 		[$part,$_]
  193: 		} sort(keys(%{ $responseType->{$part} }));
  194: 	} sort(keys(%$responseType));
  195:     return @part_response_id;
  196: }
  197: 
  198: sub get_display_part {
  199:     my ($partID,$symb)=@_;
  200:     my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',$symb);
  201:     if (defined($display) and $display ne '') {
  202:         $display.= ' (<span class="LC_internal_info">'
  203:                   .&mt('Part ID: [_1]',$partID).'</span>)';
  204:     } else {
  205: 	$display=$partID;
  206:     }
  207:     return $display;
  208: }
  209: 
  210: sub reset_caches {
  211:     &reset_analyze_cache();
  212:     &reset_perm();
  213:     &reset_old_essays();
  214: }
  215: 
  216: {
  217:     my %analyze_cache;
  218:     my %analyze_cache_formkeys;
  219: 
  220:     sub reset_analyze_cache {
  221: 	undef(%analyze_cache);
  222:         undef(%analyze_cache_formkeys);
  223:     }
  224: 
  225:     sub get_analyze {
  226: 	my ($symb,$uname,$udom,$no_increment,$add_to_hash,$type,$trial,$rndseed,$bubbles_per_row)=@_;
  227: 	my $key = "$symb\0$uname\0$udom";
  228:         if ($type eq 'randomizetry') {
  229:             if ($trial ne '') {
  230:                 $key .= "\0".$trial;
  231:             }
  232:         }
  233: 	if (exists($analyze_cache{$key})) {
  234:             my $getupdate = 0;
  235:             if (ref($add_to_hash) eq 'HASH') {
  236:                 foreach my $item (keys(%{$add_to_hash})) {
  237:                     if (ref($analyze_cache_formkeys{$key}) eq 'HASH') {
  238:                         if (!exists($analyze_cache_formkeys{$key}{$item})) {
  239:                             $getupdate = 1;
  240:                             last;
  241:                         }
  242:                     } else {
  243:                         $getupdate = 1;
  244:                     }
  245:                 }
  246:             }
  247:             if (!$getupdate) {
  248:                 return $analyze_cache{$key};
  249:             }
  250:         }
  251: 
  252: 	my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
  253: 	$url=&Apache::lonnet::clutter($url);
  254:         my %form = ('grade_target'      => 'analyze',
  255:                     'grade_domain'      => $udom,
  256:                     'grade_symb'        => $symb,
  257:                     'grade_courseid'    =>  $env{'request.course.id'},
  258:                     'grade_username'    => $uname,
  259:                     'grade_noincrement' => $no_increment);
  260:         if ($bubbles_per_row ne '') {
  261:             $form{'bubbles_per_row'} = $bubbles_per_row;
  262:         }
  263:         if ($type eq 'randomizetry') {
  264:             $form{'grade_questiontype'} = $type;
  265:             if ($rndseed ne '') {
  266:                 $form{'grade_rndseed'} = $rndseed;
  267:             }
  268:         }
  269:         if (ref($add_to_hash)) {
  270:             %form = (%form,%{$add_to_hash});
  271:         }
  272: 	my $subresult=&ssi_with_retries($url, $ssi_retries,%form);
  273: 	(undef,$subresult)=split(/_HASH_REF__/,$subresult,2);
  274: 	my %analyze=&Apache::lonnet::str2hash($subresult);
  275:         if (ref($add_to_hash) eq 'HASH') {
  276:             $analyze_cache_formkeys{$key} = $add_to_hash;
  277:         } else {
  278:             $analyze_cache_formkeys{$key} = {};
  279:         }
  280: 	return $analyze_cache{$key} = \%analyze;
  281:     }
  282: 
  283:     sub get_order {
  284: 	my ($partid,$respid,$symb,$uname,$udom,$no_increment,$type,$trial,$rndseed)=@_;
  285: 	my $analyze = &get_analyze($symb,$uname,$udom,$no_increment,undef,$type,$trial,$rndseed);
  286: 	return $analyze->{"$partid.$respid.shown"};
  287:     }
  288: 
  289:     sub get_radiobutton_correct_foil {
  290: 	my ($partid,$respid,$symb,$uname,$udom,$type,$trial,$rndseed)=@_;
  291: 	my $analyze = &get_analyze($symb,$uname,$udom,undef,undef,$type,$trial,$rndseed);
  292:         my $foils = &get_order($partid,$respid,$symb,$uname,$udom,undef,$type,$trial,$rndseed);
  293:         if (ref($foils) eq 'ARRAY') {
  294: 	    foreach my $foil (@{$foils}) {
  295: 	        if ($analyze->{"$partid.$respid.foil.value.$foil"} eq 'true') {
  296: 		    return $foil;
  297: 	        }
  298: 	    }
  299: 	}
  300:     }
  301: 
  302:     sub scantron_partids_tograde {
  303:         my ($resource,$cid,$uname,$udom,$check_for_randomlist,$bubbles_per_row,$scancode) = @_;
  304:         my (%analysis,@parts);
  305:         if (ref($resource)) {
  306:             my $symb = $resource->symb();
  307:             my $add_to_form;
  308:             if ($check_for_randomlist) {
  309:                 $add_to_form = { 'check_parts_withrandomlist' => 1,};
  310:             }
  311:             if ($scancode) {
  312:                 if (ref($add_to_form) eq 'HASH') {
  313:                     $add_to_form->{'code_for_randomlist'} = $scancode;
  314:                 } else {
  315:                     $add_to_form = { 'code_for_randomlist' => $scancode,};
  316:                 }
  317:             }
  318:             my $analyze =
  319:                 &get_analyze($symb,$uname,$udom,undef,$add_to_form,
  320:                              undef,undef,undef,$bubbles_per_row);
  321:             if (ref($analyze) eq 'HASH') {
  322:                 %analysis = %{$analyze};
  323:             }
  324:             if (ref($analysis{'parts'}) eq 'ARRAY') {
  325:                 foreach my $part (@{$analysis{'parts'}}) {
  326:                     my ($id,$respid) = split(/\./,$part);
  327:                     if (!&Apache::loncommon::check_if_partid_hidden($id,$symb,$udom,$uname)) {
  328:                         push(@parts,$part);
  329:                     }
  330:                 }
  331:             }
  332:         }
  333:         return (\%analysis,\@parts);
  334:     }
  335: 
  336: }
  337: 
  338: #--- Clean response type for display
  339: #--- Currently filters option/rank/radiobutton/match/essay/Task
  340: #        response types only.
  341: sub cleanRecord {
  342:     my ($answer,$response,$symb,$partid,$respid,$record,$order,$version,
  343: 	$uname,$udom,$type,$trial,$rndseed) = @_;
  344:     my $grayFont = '<span class="LC_internal_info">';
  345:     if ($response =~ /^(option|rank)$/) {
  346: 	my %answer=&Apache::lonnet::str2hash($answer);
  347:         my @answer = %answer;
  348:         %answer = map {&HTML::Entities::encode($_, '"<>&')} @answer;
  349: 	my %grading=&Apache::lonnet::str2hash($record->{$version."resource.$partid.$respid.submissiongrading"});
  350: 	my ($toprow,$bottomrow);
  351: 	foreach my $foil (@$order) {
  352: 	    if ($grading{$foil} == 1) {
  353: 		$toprow.='<td><b>'.$answer{$foil}.'&nbsp;</b></td>';
  354: 	    } else {
  355: 		$toprow.='<td><i>'.$answer{$foil}.'&nbsp;</i></td>';
  356: 	    }
  357: 	    $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
  358: 	}
  359: 	return '<blockquote><table border="1">'.
  360: 	    '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
  361: 	    '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
  362: 	    $bottomrow.'</tr></table></blockquote>';
  363:     } elsif ($response eq 'match') {
  364: 	my %answer=&Apache::lonnet::str2hash($answer);
  365:         my @answer = %answer;
  366:         %answer = map {&HTML::Entities::encode($_, '"<>&')} @answer;
  367: 	my %grading=&Apache::lonnet::str2hash($record->{$version."resource.$partid.$respid.submissiongrading"});
  368: 	my @items=&Apache::lonnet::str2array($record->{$version."resource.$partid.$respid.submissionitems"});
  369: 	my ($toprow,$middlerow,$bottomrow);
  370: 	foreach my $foil (@$order) {
  371: 	    my $item=shift(@items);
  372: 	    if ($grading{$foil} == 1) {
  373: 		$toprow.='<td><b>'.$item.'&nbsp;</b></td>';
  374: 		$middlerow.='<td><b>'.$grayFont.$answer{$foil}.'&nbsp;</span></b></td>';
  375: 	    } else {
  376: 		$toprow.='<td><i>'.$item.'&nbsp;</i></td>';
  377: 		$middlerow.='<td><i>'.$grayFont.$answer{$foil}.'&nbsp;</span></i></td>';
  378: 	    }
  379: 	    $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
  380: 	}
  381: 	return '<blockquote><table border="1">'.
  382: 	    '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
  383: 	    '<tr valign="top"><td>'.$grayFont.&mt('Item ID').'</span></td>'.
  384: 	    $middlerow.'</tr>'.
  385: 	    '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
  386: 	    $bottomrow.'</tr></table></blockquote>';
  387:     } elsif ($response eq 'radiobutton') {
  388: 	my %answer=&Apache::lonnet::str2hash($answer);
  389:         my @answer = %answer;
  390:         %answer = map {&HTML::Entities::encode($_, '"<>&')}  @answer;
  391: 	my ($toprow,$bottomrow);
  392: 	my $correct = 
  393: 	    &get_radiobutton_correct_foil($partid,$respid,$symb,$uname,$udom,$type,$trial,$rndseed);
  394: 	foreach my $foil (@$order) {
  395: 	    if (exists($answer{$foil})) {
  396: 		if ($foil eq $correct) {
  397: 		    $toprow.='<td><b>'.&mt('true').'</b></td>';
  398: 		} else {
  399: 		    $toprow.='<td><i>'.&mt('true').'</i></td>';
  400: 		}
  401: 	    } else {
  402: 		$toprow.='<td>'.&mt('false').'</td>';
  403: 	    }
  404: 	    $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
  405: 	}
  406: 	return '<blockquote><table border="1">'.
  407: 	    '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
  408: 	    '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
  409: 	    $bottomrow.'</tr></table></blockquote>';
  410:     } elsif ($response eq 'essay') {
  411: 	if (! exists ($env{'form.'.$symb})) {
  412: 	    my (%keyhash) = &Apache::lonnet::dump('nohist_handgrade',
  413: 						  $env{'course.'.$env{'request.course.id'}.'.domain'},
  414: 						  $env{'course.'.$env{'request.course.id'}.'.num'});
  415: 
  416: 	    my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
  417: 	    $env{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';
  418: 	    $env{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';
  419: 	    $env{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';
  420: 	    $env{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
  421: 	    $env{'form.'.$symb} = 1; # so that we don't have to read it from disk for multiple sub of the same prob.
  422: 	}
  423:         $answer = &Apache::lontexconvert::msgtexconverted($answer);
  424: 	return '<br /><br /><blockquote><tt>'.&keywords_highlight($answer).'</tt></blockquote>';
  425:     } elsif ( $response eq 'organic') {
  426:         my $result=&mt('Smile representation: [_1]',
  427:                            '"<tt>'.&HTML::Entities::encode($answer, '"<>&').'</tt>"');
  428: 	my $jme=$record->{$version."resource.$partid.$respid.molecule"};
  429: 	$result.=&Apache::chemresponse::jme_img($jme,$answer,400);
  430: 	return $result;
  431:     } elsif ( $response eq 'Task') {
  432: 	if ( $answer eq 'SUBMITTED') {
  433: 	    my $files = $record->{$version."resource.$respid.$partid.bridgetask.portfiles"};
  434: 	    my $result = &Apache::bridgetask::file_list($files,$uname,$udom);
  435: 	    return $result;
  436: 	} elsif ( grep(/^\Q$version\E.*?\.instance$/, keys(%{$record})) ) {
  437: 	    my @matches = grep(/^\Q$version\E.*?\.instance$/,
  438: 			       keys(%{$record}));
  439: 	    return join('<br />',($version,@matches));
  440: 			       
  441: 			       
  442: 	} else {
  443: 	    my $result =
  444: 		'<p>'
  445: 		.&mt('Overall result: [_1]',
  446: 		     $record->{$version."resource.$respid.$partid.status"})
  447: 		.'</p>';
  448: 	    
  449: 	    $result .= '<ul>';
  450: 	    my @grade = grep(/^\Q${version}resource.$respid.$partid.\E[^.]*[.]status$/,
  451: 			     keys(%{$record}));
  452: 	    foreach my $grade (sort(@grade)) {
  453: 		my ($dim) = ($grade =~/[.]([^.]+)[.]status$/);
  454: 		$result.= '<li>'.&mt("Dimension: [_1], status [_2] ",
  455: 				     $dim, $record->{$grade}).
  456: 			  '</li>';
  457: 	    }
  458: 	    $result.='</ul>';
  459: 	    return $result;
  460: 	}
  461:     } elsif ( $response =~ m/(?:numerical|formula|custom)/) {
  462:         # Respect multiple input fields, see Bug #5409
  463: 	$answer = 
  464: 	    &Apache::loncommon::format_previous_attempt_value('submission',
  465: 							      $answer);
  466: 	return $answer;
  467:     }
  468:     return &HTML::Entities::encode($answer, '"<>&');
  469: }
  470: 
  471: #-- A couple of common js functions
  472: sub commonJSfunctions {
  473:     my $request = shift;
  474:     $request->print(&Apache::lonhtmlcommon::scripttag(<<COMMONJSFUNCTIONS));
  475:     function radioSelection(radioButton) {
  476: 	var selection=null;
  477: 	if (radioButton.length > 1) {
  478: 	    for (var i=0; i<radioButton.length; i++) {
  479: 		if (radioButton[i].checked) {
  480: 		    return radioButton[i].value;
  481: 		}
  482: 	    }
  483: 	} else {
  484: 	    if (radioButton.checked) return radioButton.value;
  485: 	}
  486: 	return selection;
  487:     }
  488: 
  489:     function pullDownSelection(selectOne) {
  490: 	var selection="";
  491: 	if (selectOne.length > 1) {
  492: 	    for (var i=0; i<selectOne.length; i++) {
  493: 		if (selectOne[i].selected) {
  494: 		    return selectOne[i].value;
  495: 		}
  496: 	    }
  497: 	} else {
  498:             // only one value it must be the selected one
  499: 	    return selectOne.value;
  500: 	}
  501:     }
  502: COMMONJSFUNCTIONS
  503: }
  504: 
  505: #--- Dumps the class list with usernames,list of sections,
  506: #--- section, ids and fullnames for each user.
  507: sub getclasslist {
  508:     my ($getsec,$filterbyaccstatus,$getgroup,$symb,$submitonly,$filterbysubmstatus) = @_;
  509:     my @getsec;
  510:     my @getgroup;
  511:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
  512:     if (!ref($getsec)) {
  513: 	if ($getsec ne '' && $getsec ne 'all') {
  514: 	    @getsec=($getsec);
  515: 	}
  516:     } else {
  517: 	@getsec=@{$getsec};
  518:     }
  519:     if (grep(/^all$/,@getsec)) { undef(@getsec); }
  520:     if (!ref($getgroup)) {
  521: 	if ($getgroup ne '' && $getgroup ne 'all') {
  522: 	    @getgroup=($getgroup);
  523: 	}
  524:     } else {
  525: 	@getgroup=@{$getgroup};
  526:     }
  527:     if (grep(/^all$/,@getgroup)) { undef(@getgroup); }
  528: 
  529:     my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist();
  530:     # Bail out if we were unable to get the classlist
  531:     return if (! defined($classlist));
  532:     &Apache::loncoursedata::get_group_memberships($classlist,$keylist);
  533:     #
  534:     my %sections;
  535:     my %fullnames;
  536:     my ($cdom,$cnum,$partlist);
  537:     if (($filterbysubmstatus) && ($submitonly ne 'all') && ($symb ne '')) {
  538:         $cdom = $env{"course.$env{'request.course.id'}.domain"};
  539:         $cnum = $env{"course.$env{'request.course.id'}.num"};
  540:         my $res_error;
  541:         ($partlist,my $handgrade,my $responseType) = &response_type($symb,\$res_error);
  542:     }
  543:     foreach my $student (keys(%$classlist)) {
  544:         my $end      = 
  545:             $classlist->{$student}->[&Apache::loncoursedata::CL_END()];
  546:         my $start    = 
  547:             $classlist->{$student}->[&Apache::loncoursedata::CL_START()];
  548:         my $id       = 
  549:             $classlist->{$student}->[&Apache::loncoursedata::CL_ID()];
  550:         my $section  = 
  551:             $classlist->{$student}->[&Apache::loncoursedata::CL_SECTION()];
  552:         my $fullname = 
  553:             $classlist->{$student}->[&Apache::loncoursedata::CL_FULLNAME()];
  554:         my $status   = 
  555:             $classlist->{$student}->[&Apache::loncoursedata::CL_STATUS()];
  556:         my $group   = 
  557:             $classlist->{$student}->[&Apache::loncoursedata::CL_GROUP()];
  558: 	# filter students according to status selected
  559: 	if ($filterbyaccstatus && (!($stu_status =~ /Any/))) {
  560: 	    if (!($stu_status =~ $status)) {
  561: 		delete($classlist->{$student});
  562: 		next;
  563: 	    }
  564: 	}
  565: 	# filter students according to groups selected
  566: 	my @stu_groups = split(/,/,$group);
  567: 	if (@getgroup) {
  568: 	    my $exclude = 1;
  569: 	    foreach my $grp (@getgroup) {
  570: 	        foreach my $stu_group (@stu_groups) {
  571: 	            if ($stu_group eq $grp) {
  572: 	                $exclude = 0;
  573:     	            } 
  574: 	        }
  575:     	        if (($grp eq 'none') && !$group) {
  576:         	    $exclude = 0;
  577:         	}
  578: 	    }
  579: 	    if ($exclude) {
  580: 	        delete($classlist->{$student});
  581: 		next;
  582: 	    }
  583: 	}
  584:         if (($filterbysubmstatus) && ($submitonly ne 'all') && ($symb ne '')) {
  585:             my $udom =
  586:                 $classlist->{$student}->[&Apache::loncoursedata::CL_SDOM()];
  587:             my $uname =
  588:                 $classlist->{$student}->[&Apache::loncoursedata::CL_SNAME()];
  589:             if (($symb ne '') && ($udom ne '') && ($uname ne '')) {
  590:                 if ($submitonly eq 'queued') {
  591:                     my %queue_status =
  592:                         &Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
  593:                                                                 $udom,$uname);
  594:                     if (!defined($queue_status{'gradingqueue'})) {
  595:                         delete($classlist->{$student});
  596:                         next;
  597:                     }
  598:                 } else {
  599:                     my (%status) =&student_gradeStatus($symb,$udom,$uname,$partlist);
  600:                     my $submitted = 0;
  601:                     my $graded = 0;
  602:                     my $incorrect = 0;
  603:                     foreach (keys(%status)) {
  604:                         $submitted = 1 if ($status{$_} ne 'nothing');
  605:                         $graded = 1 if ($status{$_} =~ /^ungraded/);
  606:                         $incorrect = 1 if ($status{$_} =~ /^incorrect/);
  607: 
  608:                         my ($foo,$partid,$foo1) = split(/\./,$_);
  609:                         if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
  610:                             $submitted = 0;
  611:                         }
  612:                     }
  613:                     if (!$submitted && ($submitonly eq 'yes' ||
  614:                                         $submitonly eq 'incorrect' ||
  615:                                         $submitonly eq 'graded')) {
  616:                         delete($classlist->{$student});
  617:                         next;
  618:                     } elsif (!$graded && ($submitonly eq 'graded')) {
  619:                         delete($classlist->{$student});
  620:                         next;
  621:                     } elsif (!$incorrect && $submitonly eq 'incorrect') {
  622:                         delete($classlist->{$student});
  623:                         next;
  624:                     }
  625:                 }
  626:             }
  627:         }
  628: 	$section = ($section ne '' ? $section : 'none');
  629: 	if (&canview($section)) {
  630: 	    if (!@getsec || grep(/^\Q$section\E$/,@getsec)) {
  631: 		$sections{$section}++;
  632: 		if ($classlist->{$student}) {
  633: 		    $fullnames{$student}=$fullname;
  634: 		}
  635: 	    } else {
  636: 		delete($classlist->{$student});
  637: 	    }
  638: 	} else {
  639: 	    delete($classlist->{$student});
  640: 	}
  641:     }
  642:     my @sections = sort(keys(%sections));
  643:     return ($classlist,\@sections,\%fullnames);
  644: }
  645: 
  646: sub canmodify {
  647:     my ($sec)=@_;
  648:     if ($perm{'mgr'}) {
  649: 	if (!defined($perm{'mgr_section'})) {
  650: 	    # can modify whole class
  651: 	    return 1;
  652: 	} else {
  653: 	    if ($sec eq $perm{'mgr_section'}) {
  654: 		#can modify the requested section
  655: 		return 1;
  656: 	    } else {
  657: 		# can't modify the requested section
  658: 		return 0;
  659: 	    }
  660: 	}
  661:     }
  662:     #can't modify
  663:     return 0;
  664: }
  665: 
  666: sub canview {
  667:     my ($sec)=@_;
  668:     if ($perm{'vgr'}) {
  669: 	if (!defined($perm{'vgr_section'})) {
  670: 	    # can view whole class
  671: 	    return 1;
  672: 	} else {
  673: 	    if ($sec eq $perm{'vgr_section'}) {
  674: 		#can view the requested section
  675: 		return 1;
  676: 	    } else {
  677: 		# can't view the requested section
  678: 		return 0;
  679: 	    }
  680: 	}
  681:     }
  682:     #can't view
  683:     return 0;
  684: }
  685: 
  686: #--- Retrieve the grade status of a student for all the parts
  687: sub student_gradeStatus {
  688:     my ($symb,$udom,$uname,$partlist) = @_;
  689:     my %record     = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
  690:     my %partstatus = ();
  691:     foreach (@$partlist) {
  692: 	my ($status,undef)   = split(/_/,$record{"resource.$_.solved"},2);
  693: 	$status              = 'nothing' if ($status eq '');
  694: 	$partstatus{$_}      = $status;
  695: 	my $subkey           = "resource.$_.submitted_by";
  696: 	$partstatus{$subkey} = $record{$subkey} if ($record{$subkey} ne '');
  697:     }
  698:     return %partstatus;
  699: }
  700: 
  701: # hidden form and javascript that calls the form
  702: # Use by verifyscript and viewgrades
  703: # Shows a student's view of problem and submission
  704: sub jscriptNform {
  705:     my ($symb) = @_;
  706:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
  707:     my $jscript= &Apache::lonhtmlcommon::scripttag(
  708: 	'    function viewOneStudent(user,domain) {'."\n".
  709: 	'	document.onestudent.student.value = user;'."\n".
  710: 	'	document.onestudent.userdom.value = domain;'."\n".
  711: 	'	document.onestudent.submit();'."\n".
  712: 	'    }'."\n".
  713: 	"\n");
  714:     $jscript.= '<form action="/adm/grades" method="post" name="onestudent">'."\n".
  715: 	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
  716: 	'<input type="hidden" name="Status"  value="'.$stu_status.'" />'."\n".
  717: 	'<input type="hidden" name="command" value="submission" />'."\n".
  718: 	'<input type="hidden" name="student" value="" />'."\n".
  719: 	'<input type="hidden" name="userdom" value="" />'."\n".
  720: 	'</form>'."\n";
  721:     return $jscript;
  722: }
  723: 
  724: 
  725: 
  726: # Given the score (as a number [0-1] and the weight) what is the final
  727: # point value? This function will round to the nearest tenth, third,
  728: # or quarter if one of those is within the tolerance of .00001.
  729: sub compute_points {
  730:     my ($score, $weight) = @_;
  731:     
  732:     my $tolerance = .00001;
  733:     my $points = $score * $weight;
  734: 
  735:     # Check for nearness to 1/x.
  736:     my $check_for_nearness = sub {
  737:         my ($factor) = @_;
  738:         my $num = ($points * $factor) + $tolerance;
  739:         my $floored_num = floor($num);
  740:         if ($num - $floored_num < 2 * $tolerance * $factor) {
  741:             return $floored_num / $factor;
  742:         }
  743:         return $points;
  744:     };
  745: 
  746:     $points = $check_for_nearness->(10);
  747:     $points = $check_for_nearness->(3);
  748:     $points = $check_for_nearness->(4);
  749:     
  750:     return $points;
  751: }
  752: 
  753: #------------------ End of general use routines --------------------
  754: 
  755: #
  756: # Find most similar essay
  757: #
  758: 
  759: sub most_similar {
  760:     my ($uname,$udom,$symb,$uessay)=@_;
  761: 
  762:     unless ($symb) { return ''; }
  763: 
  764:     unless (ref($old_essays{$symb}) eq 'HASH') { return ''; }
  765: 
  766: # ignore spaces and punctuation
  767: 
  768:     $uessay=~s/\W+/ /gs;
  769: 
  770: # ignore empty submissions (occuring when only files are sent)
  771: 
  772:     unless ($uessay=~/\w+/s) { return ''; }
  773: 
  774: # these will be returned. Do not care if not at least 50 percent similar
  775:     my $limit=0.6;
  776:     my $sname='';
  777:     my $sdom='';
  778:     my $scrsid='';
  779:     my $sessay='';
  780: # go through all essays ...
  781:     foreach my $tkey (keys(%{$old_essays{$symb}})) {
  782: 	my ($tname,$tdom,$tcrsid)=map {&unescape($_)} (split(/\./,$tkey));
  783: # ... except the same student
  784:         next if (($tname eq $uname) && ($tdom eq $udom));
  785: 	my $tessay=$old_essays{$symb}{$tkey};
  786: 	$tessay=~s/\W+/ /gs;
  787: # String similarity gives up if not even limit
  788: 	my $tsimilar=&String::Similarity::similarity($uessay,$tessay,$limit);
  789: # Found one
  790: 	if ($tsimilar>$limit) {
  791: 	    $limit=$tsimilar;
  792: 	    $sname=$tname;
  793: 	    $sdom=$tdom;
  794: 	    $scrsid=$tcrsid;
  795: 	    $sessay=$old_essays{$symb}{$tkey};
  796: 	}
  797:     }
  798:     if ($limit>0.6) {
  799:        return ($sname,$sdom,$scrsid,$sessay,$limit);
  800:     } else {
  801:        return ('','','','',0);
  802:     }
  803: }
  804: 
  805: #-------------------------------------------------------------------
  806: 
  807: #------------------------------------ Receipt Verification Routines
  808: #
  809: 
  810: sub initialverifyreceipt {
  811:    my ($request,$symb) = @_;
  812:    &commonJSfunctions($request);
  813:    return '<form name="gradingMenu" action=""><input type="submit" value="'.&mt('Verify Receipt Number.').'" />'.
  814:         &Apache::lonnet::recprefix($env{'request.course.id'}).
  815:         '-<input type="text" name="receipt" size="4" />'.
  816:         '<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
  817:         '<input type="hidden" name="command" value="verify" />'.
  818:         "</form>\n";
  819: }
  820: 
  821: #--- Check whether a receipt number is valid.---
  822: sub verifyreceipt {
  823:     my ($request,$symb) = @_;
  824: 
  825:     my $courseid = $env{'request.course.id'};
  826:     my $receipt  = &Apache::lonnet::recprefix($courseid).'-'.
  827: 	$env{'form.receipt'};
  828:     $receipt     =~ s/[^\-\d]//g;
  829: 
  830:     my $title =
  831: 	'<h3><span class="LC_info">'.
  832: 	&mt('Verifying Receipt Number [_1]',$receipt).
  833: 	'</span></h3>'."\n";
  834: 
  835:     my ($string,$contents,$matches) = ('','',0);
  836:     my (undef,undef,$fullname) = &getclasslist('all','0');
  837:     
  838:     my $receiptparts=0;
  839:     if ($env{"course.$courseid.receiptalg"} eq 'receipt2' ||
  840: 	$env{"course.$courseid.receiptalg"} eq 'receipt3') { $receiptparts=1; }
  841:     my $parts=['0'];
  842:     if ($receiptparts) {
  843:         my $res_error; 
  844:         ($parts)=&response_type($symb,\$res_error);
  845:         if ($res_error) {
  846:             return &navmap_errormsg();
  847:         } 
  848:     }
  849:     
  850:     my $header = 
  851: 	&Apache::loncommon::start_data_table().
  852: 	&Apache::loncommon::start_data_table_header_row().
  853: 	'<th>&nbsp;'.&mt('Fullname').'&nbsp;</th>'."\n".
  854: 	'<th>&nbsp;'.&mt('Username').'&nbsp;</th>'."\n".
  855: 	'<th>&nbsp;'.&mt('Domain').'&nbsp;</th>';
  856:     if ($receiptparts) {
  857: 	$header.='<th>&nbsp;'.&mt('Problem Part').'&nbsp;</th>';
  858:     }
  859:     $header.=
  860: 	&Apache::loncommon::end_data_table_header_row();
  861: 
  862:     foreach (sort 
  863: 	     {
  864: 		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
  865: 		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
  866: 		 }
  867: 		 return $a cmp $b;
  868: 	     } (keys(%$fullname))) {
  869: 	my ($uname,$udom)=split(/\:/);
  870: 	foreach my $part (@$parts) {
  871: 	    if ($receipt eq &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb,$part)) {
  872: 		$contents.=
  873: 		    &Apache::loncommon::start_data_table_row().
  874: 		    '<td>&nbsp;'."\n".
  875: 		    '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
  876: 		    '\');" target="_self">'.$$fullname{$_}.'</a>&nbsp;</td>'."\n".
  877: 		    '<td>&nbsp;'.$uname.'&nbsp;</td>'.
  878: 		    '<td>&nbsp;'.$udom.'&nbsp;</td>';
  879: 		if ($receiptparts) {
  880: 		    $contents.='<td>&nbsp;'.$part.'&nbsp;</td>';
  881: 		}
  882: 		$contents.= 
  883: 		    &Apache::loncommon::end_data_table_row()."\n";
  884: 		
  885: 		$matches++;
  886: 	    }
  887: 	}
  888:     }
  889:     if ($matches == 0) {
  890:         $string = $title
  891:                  .'<p class="LC_warning">'
  892:                  .&mt('No match found for the above receipt number.')
  893:                  .'</p>';
  894:     } else {
  895: 	$string = &jscriptNform($symb).$title.
  896: 	    '<p>'.
  897: 	    &mt('The above receipt number matches the following [quant,_1,student].',$matches).
  898: 	    '</p>'.
  899: 	    $header.
  900: 	    $contents.
  901: 	    &Apache::loncommon::end_data_table()."\n";
  902:     }
  903:     return $string;
  904: }
  905: 
  906: #--- This is called by a number of programs.
  907: #--- Called from the Grading Menu - View/Grade an individual student
  908: #--- Also called directly when one clicks on the subm button 
  909: #    on the problem page.
  910: sub listStudents {
  911:     my ($request,$symb,$submitonly) = @_;
  912: 
  913:     my $is_tool   = ($symb =~ /ext\.tool$/);
  914:     my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
  915:     my $cnum      = $env{"course.$env{'request.course.id'}.num"};
  916:     my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
  917:     my $getgroup  = $env{'form.group'} eq '' ? 'all' : $env{'form.group'};
  918:     unless ($submitonly) {
  919:         $submitonly = $env{'form.submitonly'} eq '' ? 'all' : $env{'form.submitonly'};
  920:     }
  921: 
  922:     my $result='';
  923:     my $res_error;
  924:     my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
  925: 
  926:     my %js_lt = &Apache::lonlocal::texthash (
  927: 		'multiple' => 'Please select a student or group of students before clicking on the Next button.',
  928: 		'single'   => 'Please select the student before clicking on the Next button.',
  929: 	     );
  930:     &js_escape(\%js_lt);
  931:     $request->print(&Apache::lonhtmlcommon::scripttag(<<LISTJAVASCRIPT));
  932:     function checkSelect(checkBox) {
  933: 	var ctr=0;
  934: 	var sense="";
  935: 	if (checkBox.length > 1) {
  936: 	    for (var i=0; i<checkBox.length; i++) {
  937: 		if (checkBox[i].checked) {
  938: 		    ctr++;
  939: 		}
  940: 	    }
  941: 	    sense = '$js_lt{'multiple'}';
  942: 	} else {
  943: 	    if (checkBox.checked) {
  944: 		ctr = 1;
  945: 	    }
  946: 	    sense = '$js_lt{'single'}';
  947: 	}
  948: 	if (ctr == 0) {
  949: 	    alert(sense);
  950: 	    return false;
  951: 	}
  952: 	document.gradesub.submit();
  953:     }
  954: 
  955:     function reLoadList(formname) {
  956: 	if (formname.saveStatusOld.value == pullDownSelection(formname.Status)) {return;}
  957: 	formname.command.value = 'submission';
  958: 	formname.submit();
  959:     }
  960: LISTJAVASCRIPT
  961: 
  962:     &commonJSfunctions($request);
  963:     $request->print($result);
  964: 
  965:     my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'.
  966: 	"\n";
  967: 	
  968:     $gradeTable .= &Apache::lonhtmlcommon::start_pick_box();
  969:     unless ($is_tool) {
  970:         $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('View Problem Text'))
  971:                       .'<label><input type="radio" name="vProb" value="no" checked="checked" /> '.&mt('no').' </label>'."\n"
  972:                       .'<label><input type="radio" name="vProb" value="yes" /> '.&mt('one student').' </label>'."\n"
  973:                       .'<label><input type="radio" name="vProb" value="all" /> '.&mt('all students').' </label><br />'."\n"
  974:                       .&Apache::lonhtmlcommon::row_closure();
  975:         $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('View Answer'))
  976:                       .'<label><input type="radio" name="vAns" value="no"  /> '.&mt('no').' </label>'."\n"
  977:                       .'<label><input type="radio" name="vAns" value="yes" /> '.&mt('one student').' </label>'."\n"
  978:                       .'<label><input type="radio" name="vAns" value="all" checked="checked" /> '.&mt('all students').' </label><br />'."\n"
  979:                       .&Apache::lonhtmlcommon::row_closure();
  980:     }
  981: 
  982:     my $submission_options;
  983:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
  984:     my $saveStatus = $stu_status eq '' ? 'Active' : $stu_status;
  985:     $env{'form.Status'} = $saveStatus;
  986:     my %optiontext;
  987:     if ($is_tool) {
  988:         %optiontext = &Apache::lonlocal::texthash (
  989:                           lastonly => 'last transaction',
  990:                           last     => 'last transaction with details',
  991:                           datesub  => 'all transactions',
  992:                           all      => 'all transactions with details',
  993:                       );
  994:     } else {
  995:         %optiontext = &Apache::lonlocal::texthash (
  996:                           lastonly => 'last submission',
  997:                           last     => 'last submission with details',
  998:                           datesub  => 'all submissions',
  999:                           all      => 'all submissions with details',
 1000:                       );
 1001:     }
 1002:     $submission_options.=
 1003:         '<span class="LC_nobreak">'.
 1004:         '<label><input type="radio" name="lastSub" value="lastonly" /> '.
 1005:         $optiontext{'lastonly'}.' </label></span>'."\n".
 1006:         '<span class="LC_nobreak">'.
 1007:         '<label><input type="radio" name="lastSub" value="last" /> '.
 1008:         $optiontext{'last'}.' </label></span>'."\n".
 1009:         '<span class="LC_nobreak">'.
 1010:         '<label><input type="radio" name="lastSub" value="datesub" checked="checked" /> '.
 1011:         $optiontext{'datesub'}.'</label></span>'."\n".
 1012:         '<span class="LC_nobreak">'.
 1013:         '<label><input type="radio" name="lastSub" value="all" /> '.
 1014:         $optiontext{'all'}.'</label></span>';
 1015:     my $viewtitle;
 1016:     if ($is_tool) {
 1017:         $viewtitle = &mt('View Transactions');
 1018:     } else {
 1019:         $viewtitle = &mt('View Submissions');
 1020:     }
 1021:     $gradeTable .= &Apache::lonhtmlcommon::row_title($viewtitle)
 1022:                   .$submission_options
 1023:                   .&Apache::lonhtmlcommon::row_closure();
 1024: 
 1025:     my $closure;
 1026:     if (($is_tool) && (exists($env{'form.Status'}))) {
 1027:         $closure = 1;
 1028:     }
 1029:     $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('Grading Increments'))
 1030:                   .'<select name="increment">'
 1031:                   .'<option value="1">'.&mt('Whole Points').'</option>'
 1032:                   .'<option value=".5">'.&mt('Half Points').'</option>'
 1033:                   .'<option value=".25">'.&mt('Quarter Points').'</option>'
 1034:                   .'<option value=".1">'.&mt('Tenths of a Point').'</option>'
 1035:                   .'</select>'
 1036:                   .&Apache::lonhtmlcommon::row_closure($closure);
 1037: 
 1038:     $gradeTable .= 
 1039:         &build_section_inputs().
 1040: 	'<input type="hidden" name="submitonly"  value="'.$submitonly.'" />'."\n".
 1041: 	'<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 1042: 	'<input type="hidden" name="saveStatusOld" value="'.$saveStatus.'" />'."\n";
 1043: 
 1044:     if (exists($env{'form.Status'})) {
 1045: 	$gradeTable .= '<input type="hidden" name="Status" value="'.$stu_status.'" />'."\n";
 1046:     } else {
 1047:         if ($is_tool) {
 1048:             $closure = 1;
 1049:         }
 1050:         $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('Student Status'))
 1051:                       .&Apache::lonhtmlcommon::StatusOptions(
 1052:                            $saveStatus,undef,1,'javascript:reLoadList(this.form);')
 1053:                       .&Apache::lonhtmlcommon::row_closure($closure);
 1054:     }
 1055: 
 1056:     unless ($is_tool) {
 1057:         $closure = 1;
 1058:         $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('Check For Plagiarism'))
 1059:                       .'<input type="checkbox" name="checkPlag" checked="checked" />'
 1060:                       .&Apache::lonhtmlcommon::row_closure($closure);
 1061:     }
 1062:     $gradeTable .= &Apache::lonhtmlcommon::end_pick_box();
 1063:     my $regrademsg;
 1064:     if ($is_tool) {
 1065:         $regrademsg =&mt("To view/grade/regrade, click on the check box(es) next to the student's name(s). Then click on the Next button.");
 1066:     } else {
 1067:         $regrademsg = &mt("To view/grade/regrade a submission or a group of submissions, click on the check box(es) next to the student's name(s). Then click on the Next button.");
 1068:     }
 1069:     $gradeTable .= '<p>'
 1070:                   .$regrademsg."\n"
 1071:                   .'<input type="hidden" name="command" value="processGroup" />'
 1072:                   .'</p>';
 1073: 
 1074: # checkall buttons
 1075:     $gradeTable.=&check_script('gradesub', 'stuinfo');
 1076:     $gradeTable.='<input type="button" '."\n".
 1077:         'onclick="javascript:checkSelect(this.form.stuinfo);" '."\n".
 1078:         'value="'.&mt('Next').' &rarr;" /> <br />'."\n";
 1079:     $gradeTable.=&check_buttons();
 1080:     my ($classlist, undef, $fullname) = &getclasslist($getsec,'1',$getgroup);
 1081:     $gradeTable.= &Apache::loncommon::start_data_table().
 1082: 	&Apache::loncommon::start_data_table_header_row();
 1083:     my $loop = 0;
 1084:     while ($loop < 2) {
 1085: 	$gradeTable.='<th>'.&mt('No.').'</th><th>'.&mt('Select').'</th>'.
 1086: 	    '<th>'.&nameUserString('header').'&nbsp;'.&mt('Section/Group').'</th>';
 1087: 	if (($submitonly ne 'queued') && ($submitonly ne 'all')) {
 1088: 	    foreach my $part (sort(@$partlist)) {
 1089: 		my $display_part=
 1090: 		    &get_display_part((split(/_/,$part))[0],$symb);
 1091: 		$gradeTable.=
 1092: 		    '<th>'.&mt('Part: [_1] Status',$display_part).'</th>';
 1093: 	    }
 1094: 	} elsif ($submitonly eq 'queued') {
 1095: 	    $gradeTable.='<th>'.&mt('Queue Status').'&nbsp;</th>';
 1096: 	}
 1097: 	$loop++;
 1098: #	$gradeTable.='<td></td>' if ($loop%2 ==1);
 1099:     }
 1100:     $gradeTable.=&Apache::loncommon::end_data_table_header_row()."\n";
 1101: 
 1102:     my $ctr = 0;
 1103:     foreach my $student (sort 
 1104: 			 {
 1105: 			     if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
 1106: 				 return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
 1107: 			     }
 1108: 			     return $a cmp $b;
 1109: 			 }
 1110: 			 (keys(%$fullname))) {
 1111: 	my ($uname,$udom) = split(/:/,$student);
 1112: 
 1113: 	my %status = ();
 1114: 
 1115: 	if ($submitonly eq 'queued') {
 1116: 	    my %queue_status = 
 1117: 		&Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
 1118: 							$udom,$uname);
 1119: 	    next if (!defined($queue_status{'gradingqueue'}));
 1120: 	    $status{'gradingqueue'} = $queue_status{'gradingqueue'};
 1121: 	}
 1122: 
 1123: 	if (($submitonly ne 'queued') && ($submitonly ne 'all')) {
 1124: 	    (%status) =&student_gradeStatus($symb,$udom,$uname,$partlist);
 1125: 	    my $submitted = 0;
 1126: 	    my $graded = 0;
 1127: 	    my $incorrect = 0;
 1128: 	    foreach (keys(%status)) {
 1129: 		$submitted = 1 if ($status{$_} ne 'nothing');
 1130: 		$graded = 1 if ($status{$_} =~ /^ungraded/);
 1131: 		$incorrect = 1 if ($status{$_} =~ /^incorrect/);
 1132: 		
 1133: 		my ($foo,$partid,$foo1) = split(/\./,$_);
 1134: 		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
 1135: 		    $submitted = 0;
 1136: 		    my ($part)=split(/\./,$partid);
 1137: 		    $gradeTable.='<input type="hidden" name="'.
 1138: 			$student.':'.$part.':submitted_by" value="'.
 1139: 			$status{'resource.'.$partid.'.submitted_by'}.'" />';
 1140: 		}
 1141: 	    }
 1142: 	    
 1143: 	    next if (!$submitted && ($submitonly eq 'yes' ||
 1144: 				     $submitonly eq 'incorrect' ||
 1145: 				     $submitonly eq 'graded'));
 1146: 	    next if (!$graded && ($submitonly eq 'graded'));
 1147: 	    next if (!$incorrect && $submitonly eq 'incorrect');
 1148: 	}
 1149: 
 1150: 	$ctr++;
 1151: 	my $section = $classlist->{$student}->[&Apache::loncoursedata::CL_SECTION()];
 1152:         my $group = $classlist->{$student}->[&Apache::loncoursedata::CL_GROUP()];
 1153: 	if ( $perm{'vgr'} eq 'F' ) {
 1154: 	    if ($ctr%2 ==1) {
 1155: 		$gradeTable.= &Apache::loncommon::start_data_table_row();
 1156: 	    }
 1157: 	    $gradeTable.='<td align="right">'.$ctr.'&nbsp;</td>'.
 1158:                '<td align="center"><label><input type="checkbox" name="stuinfo" value="'.
 1159:                $student.':'.$$fullname{$student}.':::SECTION'.$section.
 1160: 	       ')&nbsp;" />&nbsp;&nbsp;</label></td>'."\n".'<td>'.
 1161: 	       &nameUserString(undef,$$fullname{$student},$uname,$udom).
 1162: 	       '&nbsp;'.$section.($group ne '' ?'/'.$group:'').'</td>'."\n";
 1163: 
 1164: 	    if ($submitonly ne 'all') {
 1165: 		foreach (sort(keys(%status))) {
 1166: 		    next if ($_ =~ /^resource.*?submitted_by$/);
 1167: 		    $gradeTable.='<td align="center">&nbsp;'.&mt($status{$_}).'&nbsp;</td>'."\n";
 1168: 		}
 1169: 	    }
 1170: #	    $gradeTable.='<td></td>' if ($ctr%2 ==1);
 1171: 	    if ($ctr%2 ==0) {
 1172: 		$gradeTable.=&Apache::loncommon::end_data_table_row()."\n";
 1173: 	    }
 1174: 	}
 1175:     }
 1176:     if ($ctr%2 ==1) {
 1177: 	$gradeTable.='<td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td>';
 1178: 	    if (($submitonly ne 'queued') && ($submitonly ne 'all')) {
 1179: 		foreach (@$partlist) {
 1180: 		    $gradeTable.='<td>&nbsp;</td>';
 1181: 		}
 1182: 	    } elsif ($submitonly eq 'queued') {
 1183: 		$gradeTable.='<td>&nbsp;</td>';
 1184: 	    }
 1185: 	$gradeTable.=&Apache::loncommon::end_data_table_row();
 1186:     }
 1187: 
 1188:     $gradeTable.=&Apache::loncommon::end_data_table()."\n".
 1189:         '<input type="button" '.
 1190:         'onclick="javascript:checkSelect(this.form.stuinfo);" '.
 1191:         'value="'.&mt('Next').' &rarr;" /></form>'."\n";
 1192:     if ($ctr == 0) {
 1193: 	my $num_students=(scalar(keys(%$fullname)));
 1194: 	if ($num_students eq 0) {
 1195: 	    $gradeTable='<br />&nbsp;<span class="LC_warning">'.&mt('There are no students currently enrolled.').'</span>';
 1196: 	} else {
 1197: 	    my $submissions='submissions';
 1198: 	    if ($submitonly eq 'incorrect') { $submissions = 'incorrect submissions'; }
 1199: 	    if ($submitonly eq 'graded'   ) { $submissions = 'ungraded submissions'; }
 1200: 	    if ($submitonly eq 'queued'   ) { $submissions = 'queued submissions'; }
 1201: 	    $gradeTable='<br />&nbsp;<span class="LC_warning">'.
 1202: 		&mt('No '.$submissions.' found for this resource for any students. ([quant,_1,student] checked for '.$submissions.')',
 1203: 		    $num_students).
 1204: 		'</span><br />';
 1205: 	}
 1206:     } elsif ($ctr == 1) {
 1207: 	$gradeTable =~ s/type="checkbox"/type="checkbox" checked="checked"/;
 1208:     }
 1209:     $request->print($gradeTable);
 1210:     return '';
 1211: }
 1212: 
 1213: #---- Called from the listStudents routine
 1214: 
 1215: sub check_script {
 1216:     my ($form,$type) = @_;
 1217:     my $chkallscript = &Apache::lonhtmlcommon::scripttag('
 1218:     function checkall() {
 1219:         for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
 1220:             ele = document.forms.'.$form.'.elements[i];
 1221:             if (ele.name == "'.$type.'") {
 1222:             document.forms.'.$form.'.elements[i].checked=true;
 1223:                                        }
 1224:         }
 1225:     }
 1226: 
 1227:     function checksec() {
 1228:         for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
 1229:             ele = document.forms.'.$form.'.elements[i];
 1230:            string = document.forms.'.$form.'.chksec.value;
 1231:            if
 1232:           (ele.value.indexOf(":::SECTION"+string)>0) {
 1233:               document.forms.'.$form.'.elements[i].checked=true;
 1234:             }
 1235:         }
 1236:     }
 1237: 
 1238: 
 1239:     function uncheckall() {
 1240:         for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
 1241:             ele = document.forms.'.$form.'.elements[i];
 1242:             if (ele.name == "'.$type.'") {
 1243:             document.forms.'.$form.'.elements[i].checked=false;
 1244:                                        }
 1245:         }
 1246:     }
 1247: 
 1248: '."\n");
 1249:     return $chkallscript;
 1250: }
 1251: 
 1252: sub check_buttons {
 1253:     my $buttons.='<input type="button" onclick="checkall()" value="'.&mt('Check All').'" />';
 1254:     $buttons.='<input type="button" onclick="uncheckall()" value="'.&mt('Uncheck All').'" />&nbsp;';
 1255:     $buttons.='<input type="button" onclick="checksec()" value="'.&mt('Check Section/Group').'" />';
 1256:     $buttons.='<input type="text" size="5" name="chksec" />&nbsp;';
 1257:     return $buttons;
 1258: }
 1259: 
 1260: #     Displays the submissions for one student or a group of students
 1261: sub processGroup {
 1262:     my ($request,$symb) = @_;
 1263:     my $ctr        = 0;
 1264:     my @stuchecked = &Apache::loncommon::get_env_multiple('form.stuinfo');
 1265:     my $total      = scalar(@stuchecked)-1;
 1266: 
 1267:     foreach my $student (@stuchecked) {
 1268: 	my ($uname,$udom,$fullname) = split(/:/,$student);
 1269: 	$env{'form.student'}        = $uname;
 1270: 	$env{'form.userdom'}        = $udom;
 1271: 	$env{'form.fullname'}       = $fullname;
 1272: 	&submission($request,$ctr,$total,$symb);
 1273: 	$ctr++;
 1274:     }
 1275:     return '';
 1276: }
 1277: 
 1278: #------------------------------------------------------------------------------------
 1279: #
 1280: #-------------------------- Next few routines handles grading by student, essentially
 1281: #                           handles essay response type problem/part
 1282: #
 1283: #--- Javascript to handle the submission page functionality ---
 1284: sub sub_page_js {
 1285:     my $request = shift;
 1286:     my $alertmsg = &mt('A number equal or greater than 0 is expected. Entered value = ');
 1287:     &js_escape(\$alertmsg);
 1288:     $request->print(&Apache::lonhtmlcommon::scripttag(<<SUBJAVASCRIPT));
 1289:     function updateRadio(formname,id,weight) {
 1290: 	var gradeBox = formname["GD_BOX"+id];
 1291: 	var radioButton = formname["RADVAL"+id];
 1292: 	var oldpts = formname["oldpts"+id].value;
 1293: 	var pts = checkSolved(formname,id) == 'update' ? gradeBox.value : oldpts;
 1294: 	gradeBox.value = pts;
 1295: 	var resetbox = false;
 1296: 	if (isNaN(pts) || pts < 0) {
 1297: 	    alert("$alertmsg"+pts);
 1298: 	    for (var i=0; i<radioButton.length; i++) {
 1299: 		if (radioButton[i].checked) {
 1300: 		    gradeBox.value = i;
 1301: 		    resetbox = true;
 1302: 		}
 1303: 	    }
 1304: 	    if (!resetbox) {
 1305: 		formtextbox.value = "";
 1306: 	    }
 1307: 	    return;
 1308: 	}
 1309: 
 1310: 	if (pts > weight) {
 1311: 	    var resp = confirm("You entered a value ("+pts+
 1312: 			       ") greater than the weight for the part. Accept?");
 1313: 	    if (resp == false) {
 1314: 		gradeBox.value = oldpts;
 1315: 		return;
 1316: 	    }
 1317: 	}
 1318: 
 1319: 	for (var i=0; i<radioButton.length; i++) {
 1320: 	    radioButton[i].checked=false;
 1321: 	    if (pts == i && pts != "") {
 1322: 		radioButton[i].checked=true;
 1323: 	    }
 1324: 	}
 1325: 	updateSelect(formname,id);
 1326: 	formname["stores"+id].value = "0";
 1327:     }
 1328: 
 1329:     function writeBox(formname,id,pts) {
 1330: 	var gradeBox = formname["GD_BOX"+id];
 1331: 	if (checkSolved(formname,id) == 'update') {
 1332: 	    gradeBox.value = pts;
 1333: 	} else {
 1334: 	    var oldpts = formname["oldpts"+id].value;
 1335: 	    gradeBox.value = oldpts;
 1336: 	    var radioButton = formname["RADVAL"+id];
 1337: 	    for (var i=0; i<radioButton.length; i++) {
 1338: 		radioButton[i].checked=false;
 1339: 		if (i == oldpts) {
 1340: 		    radioButton[i].checked=true;
 1341: 		}
 1342: 	    }
 1343: 	}
 1344: 	formname["stores"+id].value = "0";
 1345: 	updateSelect(formname,id);
 1346: 	return;
 1347:     }
 1348: 
 1349:     function clearRadBox(formname,id) {
 1350: 	if (checkSolved(formname,id) == 'noupdate') {
 1351: 	    updateSelect(formname,id);
 1352: 	    return;
 1353: 	}
 1354: 	gradeSelect = formname["GD_SEL"+id];
 1355: 	for (var i=0; i<gradeSelect.length; i++) {
 1356: 	    if (gradeSelect[i].selected) {
 1357: 		var selectx=i;
 1358: 	    }
 1359: 	}
 1360: 	var stores = formname["stores"+id];
 1361: 	if (selectx == stores.value) { return };
 1362: 	var gradeBox = formname["GD_BOX"+id];
 1363: 	gradeBox.value = "";
 1364: 	var radioButton = formname["RADVAL"+id];
 1365: 	for (var i=0; i<radioButton.length; i++) {
 1366: 	    radioButton[i].checked=false;
 1367: 	}
 1368: 	stores.value = selectx;
 1369:     }
 1370: 
 1371:     function checkSolved(formname,id) {
 1372: 	if (formname["solved"+id].value == "correct_by_student" && formname.overRideScore.value == 'no') {
 1373: 	    var reply = confirm("This problem has been graded correct by the computer. Do you want to change the score?");
 1374: 	    if (!reply) {return "noupdate";}
 1375: 	    formname.overRideScore.value = 'yes';
 1376: 	}
 1377: 	return "update";
 1378:     }
 1379: 
 1380:     function updateSelect(formname,id) {
 1381: 	formname["GD_SEL"+id][0].selected = true;
 1382: 	return;
 1383:     }
 1384: 
 1385: //=========== Check that a point is assigned for all the parts  ============
 1386:     function checksubmit(formname,val,total,parttot) {
 1387: 	formname.gradeOpt.value = val;
 1388: 	if (val == "Save & Next") {
 1389: 	    for (i=0;i<=total;i++) {
 1390: 		for (j=0;j<parttot;j++) {
 1391: 		    var partid = formname["partid"+i+"_"+j].value;
 1392: 		    if (formname["GD_SEL"+i+"_"+partid][0].selected) {
 1393: 			var points = formname["GD_BOX"+i+"_"+partid].value;
 1394: 			if (points == "") {
 1395: 			    var name = formname["name"+i].value;
 1396: 			    var studentID = (name != '' ? name : formname["unamedom"+i].value);
 1397: 			    var resp = confirm("You did not assign a score for "+studentID+
 1398: 					       ", part "+partid+". Continue?");
 1399: 			    if (resp == false) {
 1400: 				formname["GD_BOX"+i+"_"+partid].focus();
 1401: 				return false;
 1402: 			    }
 1403: 			}
 1404: 		    }
 1405: 		}
 1406: 	    }
 1407: 	}
 1408: 	formname.submit();
 1409:     }
 1410: 
 1411: //======= Check that a score is assigned for all the problems (page/sequence grading only) =========
 1412:     function checkSubmitPage(formname,total) {
 1413: 	noscore = new Array(100);
 1414: 	var ptr = 0;
 1415: 	for (i=1;i<total;i++) {
 1416: 	    var partid = formname["q_"+i].value;
 1417: 	    if (formname["GD_SEL"+i+"_"+partid][0].selected) {
 1418: 		var points = formname["GD_BOX"+i+"_"+partid].value;
 1419: 		var status = formname["solved"+i+"_"+partid].value;
 1420: 		if (points == "" && status != "correct_by_student") {
 1421: 		    noscore[ptr] = i;
 1422: 		    ptr++;
 1423: 		}
 1424: 	    }
 1425: 	}
 1426: 	if (ptr != 0) {
 1427: 	    var sense = ptr == 1 ? ": " : "s: ";
 1428: 	    var prolist = "";
 1429: 	    if (ptr == 1) {
 1430: 		prolist = noscore[0];
 1431: 	    } else {
 1432: 		var i = 0;
 1433: 		while (i < ptr-1) {
 1434: 		    prolist += noscore[i]+", ";
 1435: 		    i++;
 1436: 		}
 1437: 		prolist += "and "+noscore[i];
 1438: 	    }
 1439: 	    var resp = confirm("You did not assign any score for the following problem"+sense+prolist+". Continue?");
 1440: 	    if (resp == false) {
 1441: 		return false;
 1442: 	    }
 1443: 	}
 1444: 
 1445: 	formname.submit();
 1446:     }
 1447: SUBJAVASCRIPT
 1448: }
 1449: 
 1450: #--- javascript for essay type problem --
 1451: sub sub_page_kw_js {
 1452:     my $request = shift;
 1453:     my $iconpath = $request->dir_config('lonIconsURL');
 1454:     &commonJSfunctions($request);
 1455: 
 1456:     my $inner_js_msg_central= (<<INNERJS);
 1457: <script type="text/javascript">
 1458:     function checkInput() {
 1459:       opener.document.SCORE.msgsub.value = opener.checkEntities(document.msgcenter.msgsub.value);
 1460:       var nmsg   = opener.document.SCORE.savemsgN.value;
 1461:       var usrctr = document.msgcenter.usrctr.value;
 1462:       var newval = opener.document.SCORE["newmsg"+usrctr];
 1463:       newval.value = opener.checkEntities(document.msgcenter.newmsg.value);
 1464: 
 1465:       var msgchk = "";
 1466:       if (document.msgcenter.subchk.checked) {
 1467:          msgchk = "msgsub,";
 1468:       }
 1469:       var includemsg = 0;
 1470:       for (var i=1; i<=nmsg; i++) {
 1471:           var opnmsg = opener.document.SCORE["savemsg"+i];
 1472:           var frmmsg = document.msgcenter["msg"+i];
 1473:           opnmsg.value = opener.checkEntities(frmmsg.value);
 1474:           var showflg = opener.document.SCORE["shownOnce"+i];
 1475:           showflg.value = "1";
 1476:           var chkbox = document.msgcenter["msgn"+i];
 1477:           if (chkbox.checked) {
 1478:              msgchk += "savemsg"+i+",";
 1479:              includemsg = 1;
 1480:           }
 1481:       }
 1482:       if (document.msgcenter.newmsgchk.checked) {
 1483:          msgchk += "newmsg"+usrctr;
 1484:          includemsg = 1;
 1485:       }
 1486:       imgformname = opener.document.SCORE["mailicon"+usrctr];
 1487:       imgformname.src = "$iconpath/"+((includemsg) ? "mailto.gif" : "mailbkgrd.gif");
 1488:       var includemsg = opener.document.SCORE["includemsg"+usrctr];
 1489:       includemsg.value = msgchk;
 1490: 
 1491:       self.close()
 1492: 
 1493:     }
 1494: </script>
 1495: INNERJS
 1496: 
 1497:     my $inner_js_highlight_central= (<<INNERJS);
 1498: <script type="text/javascript">
 1499:     function updateChoice(flag) {
 1500:       opener.document.SCORE.kwclr.value = opener.radioSelection(document.hlCenter.kwdclr);
 1501:       opener.document.SCORE.kwsize.value = opener.radioSelection(document.hlCenter.kwdsize);
 1502:       opener.document.SCORE.kwstyle.value = opener.radioSelection(document.hlCenter.kwdstyle);
 1503:       opener.document.SCORE.refresh.value = "on";
 1504:       if (opener.document.SCORE.keywords.value!=""){
 1505:          opener.document.SCORE.submit();
 1506:       }
 1507:       self.close()
 1508:     }
 1509: </script>
 1510: INNERJS
 1511: 
 1512:     my $start_page_msg_central = 
 1513:         &Apache::loncommon::start_page('Message Central',$inner_js_msg_central,
 1514: 				       {'js_ready'  => 1,
 1515: 					'only_body' => 1,
 1516: 					'bgcolor'   =>'#FFFFFF',});
 1517:     my $end_page_msg_central = 
 1518: 	&Apache::loncommon::end_page({'js_ready' => 1});
 1519: 
 1520: 
 1521:     my $start_page_highlight_central = 
 1522:         &Apache::loncommon::start_page('Highlight Central',
 1523: 				       $inner_js_highlight_central,
 1524: 				       {'js_ready'  => 1,
 1525: 					'only_body' => 1,
 1526: 					'bgcolor'   =>'#FFFFFF',});
 1527:     my $end_page_highlight_central = 
 1528: 	&Apache::loncommon::end_page({'js_ready' => 1});
 1529: 
 1530:     my $docopen=&Apache::lonhtmlcommon::javascript_docopen();
 1531:     $docopen=~s/^document\.//;
 1532:     my %js_lt = &Apache::lonlocal::texthash(
 1533:                 keyw => 'Keywords list, separated by a space. Add/delete to list if desired.',
 1534:                 plse => 'Please select a word or group of words from document and then click this link.',
 1535:                 adds => 'Add selection to keyword list? Edit if desired.',
 1536:                 col1 => 'red',
 1537:                 col2 => 'green',
 1538:                 col3 => 'blue',
 1539:                 siz1 => 'normal',
 1540:                 siz2 => '+1',
 1541:                 siz3 => '+2',
 1542:                 sty1 => 'normal',
 1543:                 sty2 => 'italic',
 1544:                 sty3 => 'bold',
 1545:              );
 1546:     my %html_js_lt = &Apache::lonlocal::texthash(
 1547:                 comp => 'Compose Message for: ',
 1548:                 incl => 'Include',
 1549:                 type => 'Type',
 1550:                 subj => 'Subject',
 1551:                 mesa => 'Message',
 1552:                 new  => 'New',
 1553:                 save => 'Save',
 1554:                 canc => 'Cancel',
 1555:                 kehi => 'Keyword Highlight Options',
 1556:                 txtc => 'Text Color',
 1557:                 font => 'Font Size',
 1558:                 fnst => 'Font Style',
 1559:              );
 1560:     &js_escape(\%js_lt);
 1561:     &html_escape(\%html_js_lt);
 1562:     &js_escape(\%html_js_lt);
 1563:     $request->print(&Apache::lonhtmlcommon::scripttag(<<SUBJAVASCRIPT));
 1564: 
 1565: //===================== Show list of keywords ====================
 1566:   function keywords(formname) {
 1567:     var nret = prompt("$js_lt{'keyw'}",formname.keywords.value);
 1568:     if (nret==null) return;
 1569:     formname.keywords.value = nret;
 1570: 
 1571:     if (formname.keywords.value != "") {
 1572: 	formname.refresh.value = "on";
 1573: 	formname.submit();
 1574:     }
 1575:     return;
 1576:   }
 1577: 
 1578: //===================== Script to view submitted by ==================
 1579:   function viewSubmitter(submitter) {
 1580:     document.SCORE.refresh.value = "on";
 1581:     document.SCORE.NCT.value = "1";
 1582:     document.SCORE.unamedom0.value = submitter;
 1583:     document.SCORE.submit();
 1584:     return;
 1585:   }
 1586: 
 1587: //===================== Script to add keyword(s) ==================
 1588:   function getSel() {
 1589:     if (document.getSelection) txt = document.getSelection();
 1590:     else if (document.selection) txt = document.selection.createRange().text;
 1591:     else return;
 1592:     var cleantxt = txt.replace(new RegExp('([\\f\\n\\r\\t\\v ])+', 'g')," ");
 1593:     if (cleantxt=="") {
 1594: 	alert("$js_lt{'plse'}");
 1595: 	return;
 1596:     }
 1597:     var nret = prompt("$js_lt{'adds'}",cleantxt);
 1598:     if (nret==null) return;
 1599:     document.SCORE.keywords.value = document.SCORE.keywords.value+" "+nret;
 1600:     if (document.SCORE.keywords.value != "") {
 1601: 	document.SCORE.refresh.value = "on";
 1602: 	document.SCORE.submit();
 1603:     }
 1604:     return;
 1605:   }
 1606: 
 1607: //====================== Script for composing message ==============
 1608:    // preload images
 1609:    img1 = new Image();
 1610:    img1.src = "$iconpath/mailbkgrd.gif";
 1611:    img2 = new Image();
 1612:    img2.src = "$iconpath/mailto.gif";
 1613: 
 1614:   function msgCenter(msgform,usrctr,fullname) {
 1615:     var Nmsg  = msgform.savemsgN.value;
 1616:     savedMsgHeader(Nmsg,usrctr,fullname);
 1617:     var subject = msgform.msgsub.value;
 1618:     var msgchk = document.SCORE["includemsg"+usrctr].value;
 1619:     re = /msgsub/;
 1620:     var shwsel = "";
 1621:     if (re.test(msgchk)) { shwsel = "checked" }
 1622:     subject = (document.SCORE.shownSub.value == 0 ? checkEntities(subject) : subject);
 1623:     displaySubject(checkEntities(subject),shwsel);
 1624:     for (var i=1; i<=Nmsg; i++) {
 1625: 	var testmsg = "savemsg"+i+",";
 1626: 	re = new RegExp(testmsg,"g");
 1627: 	shwsel = "";
 1628: 	if (re.test(msgchk)) { shwsel = "checked" }
 1629: 	var message = document.SCORE["savemsg"+i].value;
 1630: 	message = (document.SCORE["shownOnce"+i].value == 0 ? checkEntities(message) : message);
 1631: 	displaySavedMsg(i,message,shwsel); //I do not get it. w/o checkEntities on saved messages,
 1632: 	                                   //any &lt; is already converted to <, etc. However, only once!!
 1633:     }
 1634:     newmsg = document.SCORE["newmsg"+usrctr].value;
 1635:     shwsel = "";
 1636:     re = /newmsg/;
 1637:     if (re.test(msgchk)) { shwsel = "checked" }
 1638:     newMsg(newmsg,shwsel);
 1639:     msgTail(); 
 1640:     return;
 1641:   }
 1642: 
 1643:   function checkEntities(strx) {
 1644:     if (strx.length == 0) return strx;
 1645:     var orgStr = ["&", "<", ">", '"']; 
 1646:     var newStr = ["&amp;", "&lt;", "&gt;", "&quot;"];
 1647:     var counter = 0;
 1648:     while (counter < 4) {
 1649: 	strx = strReplace(strx,orgStr[counter],newStr[counter]);
 1650: 	counter++;
 1651:     }
 1652:     return strx;
 1653:   }
 1654: 
 1655:   function strReplace(strx, orgStr, newStr) {
 1656:     return strx.split(orgStr).join(newStr);
 1657:   }
 1658: 
 1659:   function savedMsgHeader(Nmsg,usrctr,fullname) {
 1660:     var height = 70*Nmsg+250;
 1661:     if (height > 600) {
 1662: 	height = 600;
 1663:     }
 1664:     var xpos = (screen.width-600)/2;
 1665:     xpos = (xpos < 0) ? '0' : xpos;
 1666:     var ypos = (screen.height-height)/2-30;
 1667:     ypos = (ypos < 0) ? '0' : ypos;
 1668: 
 1669:     pWin = window.open('', 'MessageCenter', 'resizable=yes,toolbar=no,location=no,scrollbars=yes,screenx='+xpos+',screeny='+ypos+',width=700,height='+height);
 1670:     pWin.focus();
 1671:     pDoc = pWin.document;
 1672:     pDoc.$docopen;
 1673:     pDoc.write('$start_page_msg_central');
 1674: 
 1675:     pDoc.write("<form action=\\"inactive\\" name=\\"msgcenter\\">");
 1676:     pDoc.write("<input value=\\""+usrctr+"\\" name=\\"usrctr\\" type=\\"hidden\\">");
 1677:     pDoc.write("<h1>&nbsp;$html_js_lt{'comp'}\"+fullname+\"<\\/h1>");
 1678: 
 1679:     pDoc.write('<table style="border:1px solid black;"><tr>');
 1680:     pDoc.write("<td><b>$html_js_lt{'incl'}<\\/b><\\/td><td><b>$html_js_lt{'type'}<\\/b><\\/td><td><b>$html_js_lt{'mesa'}<\\/td><\\/tr>");
 1681: }
 1682:     function displaySubject(msg,shwsel) {
 1683:     pDoc = pWin.document;
 1684:     pDoc.write("<tr>");
 1685:     pDoc.write("<td align=\\"center\\"><input name=\\"subchk\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
 1686:     pDoc.write("<td>$html_js_lt{'subj'}<\\/td>");
 1687:     pDoc.write("<td><input name=\\"msgsub\\" type=\\"text\\" value=\\""+msg+"\\"size=\\"40\\" maxlength=\\"80\\"><\\/td><\\/tr>");
 1688: }
 1689: 
 1690:   function displaySavedMsg(ctr,msg,shwsel) {
 1691:     pDoc = pWin.document;
 1692:     pDoc.write("<tr>");
 1693:     pDoc.write("<td align=\\"center\\"><input name=\\"msgn"+ctr+"\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
 1694:     pDoc.write("<td align=\\"center\\">"+ctr+"<\\/td>");
 1695:     pDoc.write("<td><textarea name=\\"msg"+ctr+"\\" cols=\\"60\\" rows=\\"3\\">"+msg+"<\\/textarea><\\/td><\\/tr>");
 1696: }
 1697: 
 1698:   function newMsg(newmsg,shwsel) {
 1699:     pDoc = pWin.document;
 1700:     pDoc.write("<tr>");
 1701:     pDoc.write("<td align=\\"center\\"><input name=\\"newmsgchk\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
 1702:     pDoc.write("<td align=\\"center\\">$html_js_lt{'new'}<\\/td>");
 1703:     pDoc.write("<td><textarea name=\\"newmsg\\" cols=\\"60\\" rows=\\"3\\" onchange=\\"javascript:this.form.newmsgchk.checked=true\\" >"+newmsg+"<\\/textarea><\\/td><\\/tr>");
 1704: }
 1705: 
 1706:   function msgTail() {
 1707:     pDoc = pWin.document;
 1708:     //pDoc.write("<\\/table>");
 1709:     pDoc.write("<\\/td><\\/tr><\\/table>&nbsp;");
 1710:     pDoc.write("<input type=\\"button\\" value=\\"$html_js_lt{'save'}\\" onclick=\\"javascript:checkInput()\\">&nbsp;&nbsp;");
 1711:     pDoc.write("<input type=\\"button\\" value=\\"$html_js_lt{'canc'}\\" onclick=\\"self.close()\\"><br /><br />");
 1712:     pDoc.write("<\\/form>");
 1713:     pDoc.write('$end_page_msg_central');
 1714:     pDoc.close();
 1715: }
 1716: 
 1717: //====================== Script for keyword highlight options ==============
 1718:   function kwhighlight() {
 1719:     var kwclr    = document.SCORE.kwclr.value;
 1720:     var kwsize   = document.SCORE.kwsize.value;
 1721:     var kwstyle  = document.SCORE.kwstyle.value;
 1722:     var redsel = "";
 1723:     var grnsel = "";
 1724:     var blusel = "";
 1725:     var txtcol1 = "$js_lt{'col1'}";
 1726:     var txtcol2 = "$js_lt{'col2'}";
 1727:     var txtcol3 = "$js_lt{'col3'}";
 1728:     var txtsiz1 = "$js_lt{'siz1'}";
 1729:     var txtsiz2 = "$js_lt{'siz2'}";
 1730:     var txtsiz3 = "$js_lt{'siz3'}";
 1731:     var txtsty1 = "$js_lt{'sty1'}";
 1732:     var txtsty2 = "$js_lt{'sty2'}";
 1733:     var txtsty3 = "$js_lt{'sty3'}";
 1734:     if (kwclr=="red")   {var redsel="checked='checked'"};
 1735:     if (kwclr=="green") {var grnsel="checked='checked'"};
 1736:     if (kwclr=="blue")  {var blusel="checked='checked'"};
 1737:     var sznsel = "";
 1738:     var sz1sel = "";
 1739:     var sz2sel = "";
 1740:     if (kwsize=="0")  {var sznsel="checked='checked'"};
 1741:     if (kwsize=="+1") {var sz1sel="checked='checked'"};
 1742:     if (kwsize=="+2") {var sz2sel="checked='checked'"};
 1743:     var synsel = "";
 1744:     var syisel = "";
 1745:     var sybsel = "";
 1746:     if (kwstyle=="")    {var synsel="checked='checked'"};
 1747:     if (kwstyle=="<i>") {var syisel="checked='checked'"};
 1748:     if (kwstyle=="<b>") {var sybsel="checked='checked'"};
 1749:     highlightCentral();
 1750:     highlightbody('red',txtcol1,redsel,'0',txtsiz1,sznsel,'',txtsty1,synsel);
 1751:     highlightbody('green',txtcol2,grnsel,'+1',txtsiz2,sz1sel,'<i>',txtsty2,syisel);
 1752:     highlightbody('blue',txtcol3,blusel,'+2',txtsiz3,sz2sel,'<b>',txtsty3,sybsel);
 1753:     highlightend();
 1754:     return;
 1755:   }
 1756: 
 1757:   function highlightCentral() {
 1758: //    if (window.hwdWin) window.hwdWin.close();
 1759:     var xpos = (screen.width-400)/2;
 1760:     xpos = (xpos < 0) ? '0' : xpos;
 1761:     var ypos = (screen.height-330)/2-30;
 1762:     ypos = (ypos < 0) ? '0' : ypos;
 1763: 
 1764:     hwdWin = window.open('', 'KeywordHighlightCentral', 'resizeable=yes,toolbar=no,location=no,scrollbars=no,width=400,height=300,screenx='+xpos+',screeny='+ypos);
 1765:     hwdWin.focus();
 1766:     var hDoc = hwdWin.document;
 1767:     hDoc.$docopen;
 1768:     hDoc.write('$start_page_highlight_central');
 1769:     hDoc.write("<form action=\\"inactive\\" name=\\"hlCenter\\">");
 1770:     hDoc.write("<h1>$html_js_lt{'kehi'}<\\/h1>");
 1771: 
 1772:     hDoc.write('<table border="0" width="100%"><tr style="background-color:#A1D676">');
 1773:     hDoc.write("<th>$html_js_lt{'txtc'}<\\/th><th>$html_js_lt{'font'}<\\/th><th>$html_js_lt{'fnst'}<\\/th><\\/tr>");
 1774:   }
 1775: 
 1776:   function highlightbody(clrval,clrtxt,clrsel,szval,sztxt,szsel,syval,sytxt,sysel) { 
 1777:     var hDoc = hwdWin.document;
 1778:     hDoc.write("<tr>");
 1779:     hDoc.write("<td align=\\"left\\">");
 1780:     hDoc.write("<input name=\\"kwdclr\\" type=\\"radio\\" value=\\""+clrval+"\\" "+clrsel+" \\/>&nbsp;"+clrtxt+"<\\/td>");
 1781:     hDoc.write("<td align=\\"left\\">");
 1782:     hDoc.write("<input name=\\"kwdsize\\" type=\\"radio\\" value=\\""+szval+"\\" "+szsel+" \\/>&nbsp;"+sztxt+"<\\/td>");
 1783:     hDoc.write("<td align=\\"left\\">");
 1784:     hDoc.write("<input name=\\"kwdstyle\\" type=\\"radio\\" value=\\""+syval+"\\" "+sysel+" \\/>&nbsp;"+sytxt+"<\\/td>");
 1785:     hDoc.write("<\\/tr>");
 1786:   }
 1787: 
 1788:   function highlightend() { 
 1789:     var hDoc = hwdWin.document;
 1790:     hDoc.write("<\\/table><br \\/>");
 1791:     hDoc.write("<input type=\\"button\\" value=\\"$html_js_lt{'save'}\\" onclick=\\"javascript:updateChoice(1)\\" \\/>&nbsp;&nbsp;");
 1792:     hDoc.write("<input type=\\"button\\" value=\\"$html_js_lt{'canc'}\\" onclick=\\"self.close()\\" \\/><br /><br />");
 1793:     hDoc.write("<\\/form>");
 1794:     hDoc.write('$end_page_highlight_central');
 1795:     hDoc.close();
 1796:   }
 1797: 
 1798: SUBJAVASCRIPT
 1799: }
 1800: 
 1801: sub get_increment {
 1802:     my $increment = $env{'form.increment'};
 1803:     if ($increment != 1 && $increment != .5 && $increment != .25 &&
 1804:         $increment != .1) {
 1805:         $increment = 1;
 1806:     }
 1807:     return $increment;
 1808: }
 1809: 
 1810: sub gradeBox_start {
 1811:     return (
 1812:         &Apache::loncommon::start_data_table()
 1813:        .&Apache::loncommon::start_data_table_header_row()
 1814:        .'<th>'.&mt('Part').'</th>'
 1815:        .'<th>'.&mt('Points').'</th>'
 1816:        .'<th>&nbsp;</th>'
 1817:        .'<th>'.&mt('Assign Grade').'</th>'
 1818:        .'<th>'.&mt('Weight').'</th>'
 1819:        .'<th>'.&mt('Grade Status').'</th>'
 1820:        .&Apache::loncommon::end_data_table_header_row()
 1821:     );
 1822: }
 1823: 
 1824: sub gradeBox_end {
 1825:     return (
 1826:         &Apache::loncommon::end_data_table()
 1827:     );
 1828: }
 1829: #--- displays the grading box, used in essay type problem and grading by page/sequence
 1830: sub gradeBox {
 1831:     my ($request,$symb,$uname,$udom,$counter,$partid,$record) = @_;
 1832:     my $checkIcon = '<img alt="'.&mt('Check Mark').
 1833: 	'" src="'.&Apache::loncommon::lonhttpdurl($request->dir_config('lonIconsURL').'/check.gif').'" height="16" border="0" />';
 1834:     my $wgt    = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb,$udom,$uname);
 1835:     my $wgtmsg = ($wgt > 0) ? &mt('(problem weight)') 
 1836:                            : '<span class="LC_info">'.&mt('problem weight assigned by computer').'</span>';
 1837:     $wgt       = ($wgt > 0 ? $wgt : '1');
 1838:     my $score  = ($$record{'resource.'.$partid.'.awarded'} eq '' ?
 1839: 		  '' : &compute_points($$record{'resource.'.$partid.'.awarded'},$wgt));
 1840:     my $data_WGT='<input type="hidden" name="WGT'.$counter.'_'.$partid.'" value="'.$wgt.'" />'."\n";
 1841:     my $display_part= &get_display_part($partid,$symb);
 1842:     my %last_resets = &get_last_resets($symb,$env{'request.course.id'},
 1843: 				       [$partid]);
 1844:     my $aggtries = $$record{'resource.'.$partid.'.tries'};
 1845:     if ($last_resets{$partid}) {
 1846:         $aggtries = &get_num_tries($record,$last_resets{$partid},$partid);
 1847:     }
 1848:     my $result=&Apache::loncommon::start_data_table_row();
 1849:     my $ctr = 0;
 1850:     my $thisweight = 0;
 1851:     my $increment = &get_increment();
 1852: 
 1853:     my $radio.='<table border="0"><tr>'."\n";  # display radio buttons in a nice table 10 across
 1854:     while ($thisweight<=$wgt) {
 1855: 	$radio.= '<td><span class="LC_nobreak"><label><input type="radio" name="RADVAL'.$counter.'_'.$partid.'" '.
 1856:         'onclick="javascript:writeBox(this.form,\''.$counter.'_'.$partid.'\','.
 1857: 	    $thisweight.')" value="'.$thisweight.'" '.
 1858: 	    ($score eq $thisweight ? 'checked="checked"':'').' /> '.$thisweight."</label></span></td>\n";
 1859: 	$radio.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
 1860:         $thisweight += $increment;
 1861: 	$ctr++;
 1862:     }
 1863:     $radio.='</tr></table>';
 1864: 
 1865:     my $line.='<input type="text" name="GD_BOX'.$counter.'_'.$partid.'"'.
 1866: 	($score ne ''? ' value = "'.$score.'"':'').' size="4" '.
 1867: 	'onchange="javascript:updateRadio(this.form,\''.$counter.'_'.$partid.'\','.
 1868: 	$wgt.')" /></td>'."\n";
 1869:     $line.='<td>/'.$wgt.' '.$wgtmsg.
 1870: 	($$record{'resource.'.$partid.'.solved'} eq 'correct_by_student' ? '&nbsp;'.$checkIcon : '').
 1871: 	' </td>'."\n";
 1872:     $line.='<td><select name="GD_SEL'.$counter.'_'.$partid.'" '.
 1873: 	'onchange="javascript:clearRadBox(this.form,\''.$counter.'_'.$partid.'\')" >'."\n";
 1874:     if ($$record{'resource.'.$partid.'.solved'} eq 'excused') {
 1875: 	$line.='<option></option>'.
 1876: 	    '<option value="excused" selected="selected">'.&mt('excused').'</option>';
 1877:     } else {
 1878: 	$line.='<option selected="selected"></option>'.
 1879: 	    '<option value="excused" >'.&mt('excused').'</option>';
 1880:     }
 1881:     $line.='<option value="reset status">'.&mt('reset status').'</option></select>'."\n";
 1882: 
 1883: 
 1884:     $result .= 
 1885: 	    '<td>'.$data_WGT.$display_part.'</td><td>'.$radio.'</td><td>'.&mt('or').'</td><td>'.$line.'</td>';
 1886:     $result.=&Apache::loncommon::end_data_table_row();
 1887:     $result.=&Apache::loncommon::start_data_table_row().'<td colspan="6">';
 1888:     $result.='<input type="hidden" name="stores'.$counter.'_'.$partid.'" value="" />'."\n".
 1889: 	'<input type="hidden" name="oldpts'.$counter.'_'.$partid.'" value="'.$score.'" />'."\n".
 1890: 	'<input type="hidden" name="solved'.$counter.'_'.$partid.'" value="'.
 1891: 	$$record{'resource.'.$partid.'.solved'}.'" />'."\n".
 1892:         '<input type="hidden" name="totaltries'.$counter.'_'.$partid.'" value="'.
 1893:         $$record{'resource.'.$partid.'.tries'}.'" />'."\n".
 1894:         '<input type="hidden" name="aggtries'.$counter.'_'.$partid.'" value="'.
 1895:         $aggtries.'" />'."\n";
 1896:     my $res_error;
 1897:     $result.=&handback_box($symb,$uname,$udom,$counter,$partid,$record,\$res_error);
 1898:     $result.='</td>'.&Apache::loncommon::end_data_table_row();
 1899:     if ($res_error) {
 1900:         return &navmap_errormsg();
 1901:     }
 1902:     return $result;
 1903: }
 1904: 
 1905: sub handback_box {
 1906:     my ($symb,$uname,$udom,$counter,$partid,$record,$res_error_pointer) = @_;
 1907:     my ($partlist,$handgrade,$responseType) = &response_type($symb,$res_error_pointer);
 1908:     my (@respids);
 1909:     my @part_response_id = &flatten_responseType($responseType);
 1910:     foreach my $part_response_id (@part_response_id) {
 1911:     	my ($part,$resp) = @{ $part_response_id };
 1912:         if ($part eq $partid) {
 1913:             push(@respids,$resp);
 1914:         }
 1915:     }
 1916:     my $result;
 1917:     foreach my $respid (@respids) {
 1918: 	my $prefix = $counter.'_'.$partid.'_'.$respid.'_';
 1919: 	my $files=&get_submitted_files($udom,$uname,$partid,$respid,$record);
 1920: 	next if (!@$files);
 1921: 	my $file_counter = 0;
 1922: 	foreach my $file (@$files) {
 1923: 	    if ($file =~ /\/portfolio\//) {
 1924:                 $file_counter++;
 1925:     	        my ($file_path, $file_disp) = ($file =~ m|(.+/)(.+)$|);
 1926:     	        my ($name,$version,$ext) = &Apache::lonnet::file_name_version_ext($file_disp);
 1927:     	        $file_disp = "$name.$ext";
 1928:     	        $file = $file_path.$file_disp;
 1929:     	        $result.=&mt('Return commented version of [_1] to student.',
 1930:     			 '<span class="LC_filename">'.$file_disp.'</span>');
 1931:     	        $result.='<input type="file"   name="'.$prefix.'returndoc'.$file_counter.'" />'."\n";
 1932:     	        $result.='<input type="hidden" name="'.$prefix.'origdoc'.$file_counter.'" value="'.$file.'" /><br />'."\n";
 1933: 	    }
 1934: 	}
 1935:         if ($file_counter) {
 1936:             $result .= '<input type="hidden" name="'.$prefix.'countreturndoc" value="'.$file_counter.'" />'."\n".
 1937:                        '<span class="LC_info">'.
 1938:                        '('.&mt('File(s) will be uploaded when you click on Save &amp; Next below.',$file_counter).')</span><br /><br />';
 1939:         }
 1940:     }
 1941:     return $result;    
 1942: }
 1943: 
 1944: sub show_problem {
 1945:     my ($request,$symb,$uname,$udom,$removeform,$viewon,$mode,$form) = @_;
 1946:     my $rendered;
 1947:     my %form = ((ref($form) eq 'HASH')? %{$form} : ());
 1948:     &Apache::lonxml::remember_problem_counter();
 1949:     if ($mode eq 'both' or $mode eq 'text') {
 1950: 	$rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
 1951: 						       $env{'request.course.id'},
 1952: 						       undef,\%form);
 1953:     }
 1954:     if ($removeform) {
 1955: 	$rendered=~s|<form(.*?)>||g;
 1956: 	$rendered=~s|</form>||g;
 1957: 	$rendered=~s|(<input[^>]*name\s*=\s*"?)(\w+)("?)|$1would_have_been_$2$3|g;
 1958:     }
 1959:     my $companswer;
 1960:     if ($mode eq 'both' or $mode eq 'answer') {
 1961: 	&Apache::lonxml::restore_problem_counter();
 1962: 	$companswer=
 1963: 	    &Apache::loncommon::get_student_answers($symb,$uname,$udom,
 1964: 						    $env{'request.course.id'},
 1965: 						    %form);
 1966:     }
 1967:     if ($removeform) {
 1968: 	$companswer=~s|<form(.*?)>||g;
 1969: 	$companswer=~s|</form>||g;
 1970: 	$companswer=~s|name="submit"|name="would_have_been_submit"|g;
 1971:     }
 1972:     my $renderheading = &mt('View of the problem');
 1973:     my $answerheading = &mt('Correct answer');
 1974:     if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) {
 1975:         my $stu_fullname = $env{'form.fullname'};
 1976:         if ($stu_fullname eq '') {
 1977:             $stu_fullname = &Apache::loncommon::plainname($uname,$udom,'lastname');
 1978:         }
 1979:         my $forwhom = &nameUserString(undef,$stu_fullname,$uname,$udom);
 1980:         if ($forwhom ne '') {
 1981:             $renderheading = &mt('View of the problem for[_1]',$forwhom);
 1982:             $answerheading = &mt('Correct answer for[_1]',$forwhom);
 1983:         }
 1984:     }
 1985:     $rendered=
 1986:         '<div class="LC_Box">'
 1987:        .'<h3 class="LC_hcell">'.$renderheading.'</h3>'
 1988:        .$rendered
 1989:        .'</div>';
 1990:     $companswer=
 1991:         '<div class="LC_Box">'
 1992:        .'<h3 class="LC_hcell">'.$answerheading.'</h3>'
 1993:        .$companswer
 1994:        .'</div>';
 1995:     my $result;
 1996:     if ($mode eq 'both') {
 1997:         $result=$rendered.$companswer;
 1998:     } elsif ($mode eq 'text') {
 1999:         $result=$rendered;
 2000:     } elsif ($mode eq 'answer') {
 2001:         $result=$companswer;
 2002:     }
 2003:     return $result;
 2004: }
 2005: 
 2006: sub files_exist {
 2007:     my ($r, $symb) = @_;
 2008:     my @students = &Apache::loncommon::get_env_multiple('form.stuinfo');
 2009:     foreach my $student (@students) {
 2010:         my ($uname,$udom,$fullname) = split(/:/,$student);
 2011:         my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},
 2012: 					      $udom,$uname);
 2013:         my ($string,$timestamp)= &get_last_submission(\%record);
 2014:         foreach my $submission (@$string) {
 2015:             my ($partid,$respid) =
 2016: 		($submission =~ /^resource\.([^\.]*)\.([^\.]*)\.submission/);
 2017:             my $files=&get_submitted_files($udom,$uname,$partid,$respid,
 2018: 					   \%record);
 2019:             return 1 if (@$files);
 2020:         }
 2021:     }
 2022:     return 0;
 2023: }
 2024: 
 2025: sub download_all_link {
 2026:     my ($r,$symb) = @_;
 2027:     unless (&files_exist($r, $symb)) {
 2028:         $r->print(&mt('There are currently no submitted documents.'));
 2029:         return;
 2030:     }
 2031:     my $all_students = 
 2032: 	join("\n", &Apache::loncommon::get_env_multiple('form.stuinfo'));
 2033: 
 2034:     my $parts =
 2035: 	join("\n",&Apache::loncommon::get_env_multiple('form.vPart'));
 2036: 
 2037:     my $identifier = &Apache::loncommon::get_cgi_id();
 2038:     &Apache::lonnet::appenv({'cgi.'.$identifier.'.students' => $all_students,
 2039:                              'cgi.'.$identifier.'.symb' => $symb,
 2040:                              'cgi.'.$identifier.'.parts' => $parts,});
 2041:     $r->print('<a href="/cgi-bin/multidownload.pl?'.$identifier.'">'.
 2042: 	      &mt('Download All Submitted Documents').'</a>');
 2043:     return;
 2044: }
 2045: 
 2046: sub submit_download_link {
 2047:     my ($request,$symb) = @_;
 2048:     if (!$symb) { return ''; }
 2049: #FIXME: Figure out which type of problem this is and provide appropriate download
 2050:     my $res_error;
 2051:     my ($partlist,$handgrade,$responseType) = &response_type($symb,$res_error);
 2052:     if (ref($res_error)) {
 2053:         if ($$res_error) {
 2054:             $request->print(&mt('An error occurred retrieving response types'));
 2055:             return;
 2056:         }
 2057:     }
 2058:     my ($numupload,$numessay) = (0,0);
 2059:     if (ref($responseType) eq 'HASH') {
 2060:         foreach my $part (sort(keys(%$responseType))) {
 2061:             foreach my $id (sort(keys(%{ $responseType->{$part} }))) {
 2062:                 my $responsetype = $responseType->{$part}->{$id};
 2063:                 if ($responsetype eq 'essay') {
 2064:                     my $uploadedfiletypes =
 2065:                         &Apache::lonnet::EXT("resource.$part".'_'."$id.uploadedfiletypes",$symb);
 2066:                     if ($uploadedfiletypes) {
 2067:                         $numupload++;
 2068:                     } else {
 2069:                         $numessay++;
 2070:                     }
 2071:                 }
 2072:             }
 2073:         }
 2074:     }
 2075:     if (($numupload) || ($numessay)) {
 2076:         my $submitonly= $env{'form.submitonly'} eq '' ? 'all' : $env{'form.submitonly'};
 2077:         my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
 2078:         my $getgroup  = $env{'form.group'} eq '' ? 'all' : $env{'form.group'};
 2079:         (undef,undef,my $fullname) = &getclasslist($getsec,1,$getgroup,$symb,$submitonly,1);
 2080:         if (ref($fullname) eq 'HASH') {
 2081:             my @students = map { $_.':'.$fullname->{$_} } (keys(%{$fullname}));
 2082:             if (@students) {
 2083:                 @{$env{'form.stuinfo'}} = @students;
 2084:                 if ($numupload) {
 2085:                     &download_all_link($request,$symb);
 2086:                 }
 2087: # FIXME Need to provide a mechanism to download essays, i.e., if $numessay > 0
 2088: # Needs to omit user's identity if resource instance is for an anonymous survey.
 2089:             } else {
 2090:                 $request->print(&mt('No students match the criteria you selected'));
 2091:             }
 2092:         } else {
 2093:             $request->print(&mt('Could not retrieve student information'));
 2094:         }
 2095:     } else {
 2096:         $request->print(&mt('No essayresponse items found'));
 2097:     }
 2098:     return;
 2099: }
 2100: 
 2101: sub build_section_inputs {
 2102:     my $section_inputs;
 2103:     if ($env{'form.section'} eq '') {
 2104:         $section_inputs .= '<input type="hidden" name="section" value="all" />'."\n";
 2105:     } else {
 2106:         my @sections = &Apache::loncommon::get_env_multiple('form.section');
 2107:         foreach my $section (@sections) {
 2108:             $section_inputs .= '<input type="hidden" name="section" value="'.$section.'" />'."\n";
 2109:         }
 2110:     }
 2111:     return $section_inputs;
 2112: }
 2113: 
 2114: # --------------------------- show submissions of a student, option to grade 
 2115: sub submission {
 2116:     my ($request,$counter,$total,$symb) = @_;
 2117:     my ($uname,$udom)     = ($env{'form.student'},$env{'form.userdom'});
 2118:     $udom = ($udom eq '' ? $env{'user.domain'} : $udom); #has form.userdom changed for a student?
 2119:     my $usec = &Apache::lonnet::getsection($udom,$uname,$env{'request.course.id'});
 2120:     $env{'form.fullname'} = &Apache::loncommon::plainname($uname,$udom,'lastname') if $env{'form.fullname'} eq '';
 2121: 
 2122:     my $probtitle=&Apache::lonnet::gettitle($symb); 
 2123:     if ($symb eq '') { $request->print("Unable to handle ambiguous references:."); return ''; }
 2124:     my $is_tool = ($symb =~ /ext\.tool$/);
 2125:     my ($essayurl,%coursedesc_by_cid);
 2126: 
 2127:     if (!&canview($usec)) {
 2128:         $request->print(
 2129:             '<span class="LC_warning">'.
 2130:             &mt('Unable to view requested student.').
 2131:             ' '.&mt('([_1] in section [_2] in course id [_3])',
 2132:                         $uname.':'.$udom,$usec,$env{'request.course.id'}).
 2133:             '</span>');
 2134: 	return;
 2135:     }
 2136: 
 2137:     if (!$env{'form.lastSub'}) { $env{'form.lastSub'} = 'datesub'; }
 2138:     unless ($is_tool) { 
 2139:         if (!$env{'form.vProb'}) { $env{'form.vProb'} = 'yes'; }
 2140:         if (!$env{'form.vAns'}) { $env{'form.vAns'} = 'yes'; }
 2141:     }
 2142:     my $last = ($env{'form.lastSub'} eq 'last' ? 'last' : '');
 2143:     my $checkIcon = '<img alt="'.&mt('Check Mark').
 2144: 	'" src="'.$request->dir_config('lonIconsURL').
 2145: 	'/check.gif" height="16" border="0" />';
 2146: 
 2147:     # header info
 2148:     if ($counter == 0) {
 2149: 	&sub_page_js($request);
 2150: 	&sub_page_kw_js($request);
 2151: 
 2152: 	# option to display problem, only once else it cause problems 
 2153:         # with the form later since the problem has a form.
 2154: 	if ($env{'form.vProb'} eq 'yes' or $env{'form.vAns'} eq 'yes') {
 2155: 	    my $mode;
 2156: 	    if ($env{'form.vProb'} eq 'yes' && $env{'form.vAns'} eq 'yes') {
 2157: 		$mode='both';
 2158: 	    } elsif ($env{'form.vProb'} eq 'yes') {
 2159: 		$mode='text';
 2160: 	    } elsif ($env{'form.vAns'} eq 'yes') {
 2161: 		$mode='answer';
 2162: 	    }
 2163: 	    &Apache::lonxml::clear_problem_counter();
 2164: 	    $request->print(&show_problem($request,$symb,$uname,$udom,0,1,$mode));
 2165: 	}
 2166: 
 2167: 	# kwclr is the only variable that is guaranteed not to be blank 
 2168:         # if this subroutine has been called once.
 2169: 	my %keyhash = ();
 2170: #	if ($env{'form.kwclr'} eq '' && $env{'form.handgrade'} eq 'yes') {
 2171:         if (1) {
 2172: 	    %keyhash = &Apache::lonnet::dump('nohist_handgrade',
 2173: 					     $env{'course.'.$env{'request.course.id'}.'.domain'},
 2174: 					     $env{'course.'.$env{'request.course.id'}.'.num'});
 2175: 
 2176: 	    my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
 2177: 	    $env{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';
 2178: 	    $env{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';
 2179: 	    $env{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';
 2180: 	    $env{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
 2181: 	    $env{'form.msgsub'}   = $keyhash{$symb.'_subject'} ne '' ? 
 2182: 		$keyhash{$symb.'_subject'} : $probtitle;
 2183: 	    $env{'form.savemsgN'} = $keyhash{$symb.'_savemsgN'} ne '' ? $keyhash{$symb.'_savemsgN'} : '0';
 2184: 	}
 2185: 	my $overRideScore = $env{'form.overRideScore'} eq '' ? 'no' : $env{'form.overRideScore'};
 2186: 	my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
 2187: 	$request->print('<form action="/adm/grades" method="post" name="SCORE" enctype="multipart/form-data">'."\n".
 2188: 			'<input type="hidden" name="command"    value="handgrade" />'."\n".
 2189: 			'<input type="hidden" name="Status"     value="'.$stu_status.'" />'."\n".
 2190: 			'<input type="hidden" name="overRideScore" value="'.$overRideScore.'" />'."\n".
 2191: 			'<input type="hidden" name="refresh"    value="off" />'."\n".
 2192: 			'<input type="hidden" name="studentNo"  value="" />'."\n".
 2193: 			'<input type="hidden" name="gradeOpt"   value="" />'."\n".
 2194: 			'<input type="hidden" name="symb"       value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 2195: 			'<input type="hidden" name="vProb"      value="'.$env{'form.vProb'}.'" />'."\n".
 2196: 			'<input type="hidden" name="vAns"       value="'.$env{'form.vAns'}.'" />'."\n".
 2197: 			'<input type="hidden" name="lastSub"    value="'.$env{'form.lastSub'}.'" />'."\n".
 2198: 			&build_section_inputs().
 2199: 			'<input type="hidden" name="submitonly" value="'.$env{'form.submitonly'}.'" />'."\n".
 2200: 			'<input type="hidden" name="NCT"'.
 2201: 			' value="'.($env{'form.NTSTU'} ne '' ? $env{'form.NTSTU'} : $total+1).'" />'."\n");
 2202: #	if ($env{'form.handgrade'} eq 'yes') {
 2203:         if (1) {
 2204: 	    $request->print('<input type="hidden" name="keywords" value="'.$env{'form.keywords'}.'" />'."\n".
 2205: 			    '<input type="hidden" name="kwclr"    value="'.$env{'form.kwclr'}.'" />'."\n".
 2206: 			    '<input type="hidden" name="kwsize"   value="'.$env{'form.kwsize'}.'" />'."\n".
 2207: 			    '<input type="hidden" name="kwstyle"  value="'.$env{'form.kwstyle'}.'" />'."\n".
 2208: 			    '<input type="hidden" name="msgsub"   value="'.$env{'form.msgsub'}.'" />'."\n".
 2209: 			    '<input type="hidden" name="shownSub" value="0" />'."\n".
 2210: 			    '<input type="hidden" name="savemsgN" value="'.$env{'form.savemsgN'}.'" />'."\n");
 2211: 	    foreach my $partid (&Apache::loncommon::get_env_multiple('form.vPart')) {
 2212: 		$request->print('<input type="hidden" name="vPart" value="'.$partid.'" />'."\n");
 2213: 	    }
 2214: 	}
 2215: 	
 2216: 	my ($cts,$prnmsg) = (1,'');
 2217: 	while ($cts <= $env{'form.savemsgN'}) {
 2218: 	    $prnmsg.='<input type="hidden" name="savemsg'.$cts.'" value="'.
 2219: 		(!exists($keyhash{$symb.'_savemsg'.$cts}) ? 
 2220: 		 &Apache::lonfeedback::clear_out_html($env{'form.savemsg'.$cts}) :
 2221: 		 &Apache::lonfeedback::clear_out_html($keyhash{$symb.'_savemsg'.$cts})).
 2222: 		'" />'."\n".
 2223: 		'<input type="hidden" name="shownOnce'.$cts.'" value="0" />'."\n";
 2224: 	    $cts++;
 2225: 	}
 2226: 	$request->print($prnmsg);
 2227: 
 2228: #	if ($env{'form.handgrade'} eq 'yes') {
 2229:         unless ($is_tool) {
 2230: 
 2231:             my %lt = &Apache::lonlocal::texthash(
 2232:                           keyh => 'Keyword Highlighting for Essays',
 2233:                           keyw => 'Keyword Options',
 2234:                           list => 'List',
 2235:                           past => 'Paste Selection to List',
 2236:                           high => 'Highlight Attribute',
 2237:                      );    
 2238: #
 2239: # Print out the keyword options line
 2240: #
 2241: 	    $request->print(
 2242:                 '<div class="LC_columnSection">'
 2243:                .'<fieldset><legend>'.$lt{'keyh'}.'</legend>'
 2244:                .&Apache::lonhtmlcommon::funclist_from_array(
 2245:                     ['<a href="javascript:keywords(document.SCORE);" target="_self">'.$lt{'list'}.'</a>',
 2246:                      '<a href="#" onmousedown="javascript:getSel(); return false"
 2247:  class="page">'.$lt{'past'}.'</a>',
 2248:                      '<a href="javascript:kwhighlight();" target="_self">'.$lt{'high'}.'</a>'],
 2249:                     {legend => $lt{'keyw'}})
 2250:                .'</fieldset></div>'
 2251:             );
 2252: 
 2253: #
 2254: # Load the other essays for similarity check
 2255: #
 2256:             (undef,undef,$essayurl) = &Apache::lonnet::decode_symb($symb);
 2257:             if ($essayurl eq 'lib/templates/simpleproblem.problem') {
 2258:                 my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 2259:                 my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 2260:                 if ($cdom ne '' && $cnum ne '') {
 2261:                     my ($map,$id,$res) = &Apache::lonnet::decode_symb($symb);
 2262:                     if ($map =~ m{^\Quploaded/$cdom/$cnum/\E(default(?:|_\d+)\.(?:sequence|page))$}) {
 2263:                         my $apath = $1.'_'.$id;
 2264:                         $apath=~s/\W/\_/gs;
 2265:                         &init_old_essays($symb,$apath,$cdom,$cnum);
 2266:                     }
 2267:                 }
 2268:             } else {
 2269: 	        my ($adom,$aname,$apath)=($essayurl=~/^($LONCAPA::domain_re)\/($LONCAPA::username_re)\/(.*)$/);
 2270: 	        $apath=&escape($apath);
 2271: 	        $apath=~s/\W/\_/gs;
 2272:                 &init_old_essays($symb,$apath,$adom,$aname);
 2273:             }
 2274:         }
 2275:     }
 2276: 
 2277: # This is where output for one specific student would start
 2278:     my $add_class = ($counter%2) ? ' LC_grade_show_user_odd_row' : '';
 2279:     $request->print(
 2280:         "\n\n"
 2281:        .'<div class="LC_grade_show_user'.$add_class.'">'
 2282:        .'<h2>'.&nameUserString(undef,$env{'form.fullname'},$uname,$udom).'</h2>'
 2283:        ."\n"
 2284:     );
 2285: 
 2286:     # Show additional functions if allowed
 2287:     if ($perm{'vgr'}) {
 2288:         $request->print(
 2289:             &Apache::loncommon::track_student_link(
 2290:                 'View recent activity',
 2291:                 $uname,$udom,'check')
 2292:            .' '
 2293:         );
 2294:     }
 2295:     if ($perm{'opa'}) {
 2296:         $request->print(
 2297:             &Apache::loncommon::pprmlink(
 2298:                 &mt('Set/Change parameters'),
 2299:                 $uname,$udom,$symb,'check'));
 2300:     }
 2301: 
 2302:     # Show Problem
 2303:     if ($env{'form.vProb'} eq 'all' or $env{'form.vAns'} eq 'all') {
 2304: 	my $mode;
 2305: 	if ($env{'form.vProb'} eq 'all' && $env{'form.vAns'} eq 'all') {
 2306: 	    $mode='both';
 2307: 	} elsif ($env{'form.vProb'} eq 'all' ) {
 2308: 	    $mode='text';
 2309: 	} elsif ($env{'form.vAns'} eq 'all') {
 2310: 	    $mode='answer';
 2311: 	}
 2312: 	&Apache::lonxml::clear_problem_counter();
 2313: 	$request->print(&show_problem($request,$symb,$uname,$udom,1,1,$mode,{'request.prefix' => 'ctr'.$counter}));
 2314:     }
 2315: 
 2316:     my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
 2317:     my $res_error;
 2318:     my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
 2319:     if ($res_error) {
 2320:         $request->print(&navmap_errormsg());
 2321:         return;
 2322:     }
 2323: 
 2324:     # Display student info
 2325:     $request->print(($counter == 0 ? '' : '<br />'));
 2326: 
 2327:     my $boxtitle = &mt('Submissions');
 2328:     if ($is_tool) {
 2329:         $boxtitle = &mt('Transactions')
 2330:     }
 2331:     my $result='<div class="LC_Box">'
 2332:               .'<h3 class="LC_hcell">'.$boxtitle.'</h3>';
 2333:     $result.='<input type="hidden" name="name'.$counter.
 2334:              '" value="'.$env{'form.fullname'}.'" />'."\n";
 2335: #    if ($env{'form.handgrade'} eq 'no') {
 2336:     unless ($is_tool) {
 2337:         $result.='<p class="LC_info">'
 2338:                 .&mt('Part(s) graded correct by the computer is marked with a [_1] symbol.',$checkIcon)
 2339:                 ."</p>\n";
 2340:     }
 2341: 
 2342:     # If any part of the problem is an essay-response (handgraded), then check for collaborators
 2343:     my $fullname;
 2344:     my $col_fullnames = [];
 2345: #    if ($env{'form.handgrade'} eq 'yes') {
 2346:     unless ($is_tool) {
 2347: 	(my $sub_result,$fullname,$col_fullnames)=
 2348: 	    &check_collaborators($symb,$uname,$udom,\%record,$handgrade,
 2349: 				 $counter);
 2350: 	$result.=$sub_result;
 2351:     }
 2352:     $request->print($result."\n");
 2353:     
 2354:     # print student answer/submission
 2355:     # Options are (1) Handgraded submission only
 2356:     #             (2) Last submission, includes submission that is not handgraded 
 2357:     #                  (for multi-response type part)
 2358:     #             (3) Last submission plus the parts info
 2359:     #             (4) The whole record for this student
 2360:     
 2361:     my ($string,$timestamp)= &get_last_submission(\%record,$is_tool);
 2362: 	
 2363:     my $lastsubonly;
 2364: 
 2365:     if ($$timestamp eq '') {
 2366:         $lastsubonly.='<div class="LC_grade_submissions_body">'.$$string[0].'</div>'; 
 2367:     } elsif ($is_tool) {
 2368:         $lastsubonly =
 2369:             '<div class="LC_grade_submissions_body">'
 2370:            .'<b>'.&mt('Date Grade Passed Back:').'</b> '.$$timestamp."</div>\n";
 2371:     } else {
 2372:         $lastsubonly =
 2373:             '<div class="LC_grade_submissions_body">'
 2374:            .'<b>'.&mt('Date Submitted:').'</b> '.$$timestamp."\n";
 2375: 
 2376: 	my %seenparts;
 2377: 	my @part_response_id = &flatten_responseType($responseType);
 2378: 	foreach my $part (@part_response_id) {
 2379: 	    next if ($env{'form.lastSub'} eq 'hdgrade' 
 2380: 			 && $$handgrade{$$part[0].'_'.$$part[1]} ne 'yes');
 2381: 
 2382: 	    my ($partid,$respid) = @{ $part };
 2383: 	    my $display_part=&get_display_part($partid,$symb);
 2384: 	    if ($env{"form.$uname:$udom:$partid:submitted_by"}) {
 2385: 		if (exists($seenparts{$partid})) { next; }
 2386: 		$seenparts{$partid}=1;
 2387:                 $request->print(
 2388:                     '<b>'.&mt('Part: [_1]',$display_part).'</b>'.
 2389:                     ' <b>'.&mt('Collaborative submission by: [_1]',
 2390:                                '<a href="javascript:viewSubmitter(\''.
 2391:                                $env{"form.$uname:$udom:$partid:submitted_by"}.
 2392:                                '\');" target="_self">'.
 2393:                                $$fullname{$env{"form.$uname:$udom:$partid:submitted_by"}}.'</a>').
 2394:                     '<br />');
 2395: 		next;
 2396: 		}
 2397: 	    my $responsetype = $responseType->{$partid}->{$respid};
 2398: 	    if (!exists($record{"resource.$partid.$respid.submission"})) {
 2399:                 $lastsubonly.="\n".'<div class="LC_grade_submission_part">'.
 2400:                     '<b>'.&mt('Part: [_1]',$display_part).'</b>'.
 2401:                     ' <span class="LC_internal_info">'.
 2402:                     '('.&mt('Response ID: [_1]',$respid).')'.
 2403:                     '</span>&nbsp; &nbsp;'.
 2404: 	       	    '<span class="LC_warning">'.&mt('Nothing submitted - no attempts.').'</span><br /><br /></div>';
 2405: 		next;
 2406: 	    }
 2407: 	    foreach my $submission (@$string) {
 2408: 		my ($partid,$respid) = ($submission =~ /^resource\.([^\.]*)\.([^\.]*)\.submission/);
 2409: 		if (join('_',@{$part}) ne ($partid.'_'.$respid)) { next; }
 2410: 		my ($ressub,$hide,$draft,$subval) = split(/:/,$submission,4);
 2411: 		# Similarity check
 2412:                 my $similar='';
 2413:                 my ($type,$trial,$rndseed);
 2414:                 if ($hide eq 'rand') {
 2415:                     $type = 'randomizetry';
 2416:                     $trial = $record{"resource.$partid.tries"};
 2417:                     $rndseed = $record{"resource.$partid.rndseed"};
 2418:                 }
 2419: 	        if ($env{'form.checkPlag'}) {
 2420:     		    my ($oname,$odom,$ocrsid,$oessay,$osim)=
 2421: 		        &most_similar($uname,$udom,$symb,$subval);
 2422: 		    if ($osim) {
 2423: 			$osim=int($osim*100.0);
 2424:                         if ($hide eq 'anon') {
 2425:                             $similar='<hr /><span class="LC_warning">'.&mt("Essay was found to be similar to another essay submitted for this assignment.").'<br />'.
 2426:                                      &mt('As the current submission is for an anonymous survey, no other details are available.').'</span><hr />';
 2427:                         } else {
 2428: 			    $similar='<hr />';
 2429:                             if ($essayurl eq 'lib/templates/simpleproblem.problem') {
 2430:                                 $similar .= '<h3><span class="LC_warning">'.
 2431:                                             &mt('Essay is [_1]% similar to an essay by [_2]',
 2432:                                                 $osim,
 2433:                                                 &Apache::loncommon::plainname($oname,$odom).' ('.$oname.':'.$odom.')').
 2434:                                             '</span></h3>';
 2435:                             } else {
 2436:                                 my %old_course_desc;
 2437:                                 if ($ocrsid ne '') {
 2438:                                     if (ref($coursedesc_by_cid{$ocrsid}) eq 'HASH') {
 2439:                                         %old_course_desc = %{$coursedesc_by_cid{$ocrsid}};
 2440:                                     } else {
 2441:                                         my $args;
 2442:                                         if ($ocrsid ne $env{'request.course.id'}) {
 2443:                                             $args = {'one_time' => 1};
 2444:                                         }
 2445:                                         %old_course_desc =
 2446:                                             &Apache::lonnet::coursedescription($ocrsid,$args);
 2447:                                         $coursedesc_by_cid{$ocrsid} = \%old_course_desc;
 2448:                                     }
 2449:                                     $similar .=
 2450:                                         '<h3><span class="LC_warning">'.
 2451:                                         &mt('Essay is [_1]% similar to an essay by [_2] in course [_3] (course id [_4]:[_5])',
 2452:                                             $osim,
 2453:                                             &Apache::loncommon::plainname($oname,$odom).' ('.$oname.':'.$odom.')',
 2454:                                             $old_course_desc{'description'},
 2455:                                             $old_course_desc{'num'},
 2456:                                             $old_course_desc{'domain'}).
 2457:                                         '</span></h3>';
 2458:                                 } else {
 2459:                                     $similar .=
 2460:                                         '<h3><span class="LC_warning">'.
 2461:                                         &mt('Essay is [_1]% similar to an essay by [_2] in an unknown course',
 2462:                                             $osim,
 2463:                                             &Apache::loncommon::plainname($oname,$odom).' ('.$oname.':'.$odom.')').
 2464:                                         '</span></h3>';
 2465:                                 }
 2466:                             }
 2467:                             $similar .= '<blockquote><i>'.
 2468:                                         &keywords_highlight($oessay).
 2469:                                         '</i></blockquote><hr />';
 2470:                         }
 2471: 	            }
 2472: 		}
 2473: 		my $order=&get_order($partid,$respid,$symb,$uname,$udom,
 2474:                                      undef,$type,$trial,$rndseed);
 2475:                 if ($env{'form.lastSub'} eq 'lastonly' || $env{'form.lastSub'} eq 'datesub' || $env{'form.lastSub'} =~ /^(last|all)$/ || ($env{'form.lastSub'} eq 'hdgrade' && 
 2476: 			 $$handgrade{$$part[0].'_'.$$part[1]} eq 'yes')) {
 2477: 		    my $display_part=&get_display_part($partid,$symb);
 2478:                     $lastsubonly.='<div class="LC_grade_submission_part">'.
 2479:                         '<b>'.&mt('Part: [_1]',$display_part).'</b>'.
 2480:                         ' <span class="LC_internal_info">'.
 2481:                         '('.&mt('Response ID: [_1]',$respid).')'.
 2482:                         '</span>&nbsp; &nbsp;';
 2483: 		    my $files=&get_submitted_files($udom,$uname,$partid,$respid,\%record);
 2484:                         
 2485: 		    if (@$files) {
 2486:                         if ($hide eq 'anon') {
 2487:                             $lastsubonly.='<br />'.&mt('[quant,_1,file] uploaded to this anonymous survey',scalar(@{$files}));
 2488:                         } else {
 2489:                             $lastsubonly.='<br /><br />'.'<b>'.&mt('Submitted Files:').'</b>'
 2490:                                         .'<br /><span class="LC_warning">';
 2491:                             if(@$files == 1) {
 2492:                                 $lastsubonly .= &mt('Like all files provided by users, this file may contain viruses!');
 2493:                             } else {
 2494:                                 $lastsubonly .= &mt('Like all files provided by users, these files may contain viruses!');
 2495:                             }
 2496:                             $lastsubonly .= '</span>';                         
 2497:                             foreach my $file (@$files) {
 2498:                                 &Apache::lonnet::allowuploaded('/adm/grades',$file);
 2499:                                 $lastsubonly.='<br /><a href="'.$file.'?rawmode=1" target="lonGRDs"><img src="'.&Apache::loncommon::icon($file).'" border="0" alt="" /> '.$file.'</a>';
 2500:                             }
 2501:                         }
 2502: 			$lastsubonly.='<br />';
 2503:                     }
 2504:                     if ($hide eq 'anon') {
 2505:                         $lastsubonly.='<br /><b>'.&mt('Anonymous Survey').'</b>'; 
 2506:                     } else {
 2507:              	        $lastsubonly.='<br /><b>'.&mt('Submitted Answer:').' </b>';
 2508:                         if ($draft) {
 2509:                             $lastsubonly.= ' <span class="LC_warning">'.&mt('Draft Copy').'</span>';
 2510:                         }
 2511:                         $subval =
 2512: 			    &cleanRecord($subval,$responsetype,$symb,$partid,
 2513: 					 $respid,\%record,$order,undef,$uname,$udom,$type,$trial,$rndseed);
 2514:                         if ($responsetype eq 'essay') {
 2515:                             $subval =~ s{\n}{<br />}g;
 2516:                         }
 2517:                         $lastsubonly.=$subval."\n";
 2518:                     }
 2519: 	            if ($similar) {$lastsubonly.="<br /><br />$similar\n";}
 2520: 		    $lastsubonly.='</div>';
 2521: 		}
 2522:             }
 2523: 	}
 2524: 	$lastsubonly.='</div>'."\n"; # End: LC_grade_submissions_body
 2525:     }
 2526:     $request->print($lastsubonly);
 2527:     if ($env{'form.lastSub'} eq 'datesub') {
 2528:         my ($parts,$handgrade,$responseType) = &response_type($symb,\$res_error);
 2529: 	$request->print(&displaySubByDates($symb,\%record,$parts,$responseType,$checkIcon,$uname,$udom));
 2530:   
 2531:     } 
 2532:     if ($env{'form.lastSub'} =~ /^(last|all)$/) {
 2533:         my $identifier = (&canmodify($usec)? $counter : '');
 2534:         $request->print(&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
 2535: 								 $env{'request.course.id'},
 2536: 								 $last,'.submission',
 2537: 								 'Apache::grades::keywords_highlight',
 2538:                                                                  $usec,$identifier));
 2539:     }
 2540:     $request->print('<input type="hidden" name="unamedom'.$counter.'" value="'.$uname.':'
 2541: 	.$udom.'" />'."\n");
 2542:     # return if view submission with no grading option
 2543:     if (!&canmodify($usec)) {
 2544: 	$request->print('<p><span class="LC_warning">'.&mt('No grading privileges').'</span></p></div>');
 2545: 	return;
 2546:     } else {
 2547: 	$request->print('</div>'."\n");
 2548:     }
 2549: 
 2550:     # essay grading message center
 2551: #    if ($env{'form.handgrade'} eq 'yes') {
 2552:     if (1) {
 2553: 	my $result='<div class="LC_grade_message_center">';
 2554:     
 2555: 	$result.='<div class="LC_grade_message_center_header">'.
 2556: 	    &mt('Send Message').'</div><div class="LC_grade_message_center_body">';
 2557: 	my ($lastname,$givenn) = split(/,/,$env{'form.fullname'});
 2558: 	my $msgfor = $givenn.' '.$lastname;
 2559: 	if (scalar(@$col_fullnames) > 0) {
 2560: 	    my $lastone = pop(@$col_fullnames);
 2561: 	    $msgfor .= ', '.(join ', ',@$col_fullnames).' and '.$lastone.'.';
 2562: 	}
 2563: 	$msgfor =~ s/\'/\\'/g; #' stupid emacs - no! javascript
 2564: 	$result.='<input type="hidden" name="includemsg'.$counter.'" value="" />'."\n".
 2565: 	    '<input type="hidden" name="newmsg'.$counter.'" value="" />'."\n";
 2566: 	$result.='&nbsp;<a href="javascript:msgCenter(document.SCORE,'.$counter.
 2567: 	    ',\''.$msgfor.'\');" target="_self">'.
 2568: 	    &mt('Compose message to student'.(scalar(@$col_fullnames) >= 1 ? 's' : '')).'</a><label> ('.
 2569: 	    &mt('incl. grades').' <input type="checkbox" name="withgrades'.$counter.'" /></label>)'.
 2570: 	    ' <img src="'.$request->dir_config('lonIconsURL').
 2571: 	    '/mailbkgrd.gif" width="14" height="10" alt="" name="mailicon'.$counter.'" />'."\n".
 2572: 	    '<br />&nbsp;('.
 2573: 	    &mt('Message will be sent when you click on Save &amp; Next below.').")\n";
 2574: 	$result.='</div></div>';
 2575: 	$request->print($result);
 2576:     }
 2577: 
 2578:     my %seen = ();
 2579:     my @partlist;
 2580:     my @gradePartRespid;
 2581:     my @part_response_id;
 2582:     if ($is_tool) {
 2583:         @part_response_id = ([0,'']);
 2584:     } else {
 2585:         @part_response_id = &flatten_responseType($responseType);
 2586:     }
 2587:     $request->print(
 2588:         '<div class="LC_Box">'
 2589:        .'<h3 class="LC_hcell">'.&mt('Assign Grades').'</h3>'
 2590:     );
 2591:     $request->print(&gradeBox_start());
 2592:     foreach my $part_response_id (@part_response_id) {
 2593:     	my ($partid,$respid) = @{ $part_response_id };
 2594: 	my $part_resp = join('_',@{ $part_response_id });
 2595: 	next if ($seen{$partid} > 0);
 2596: 	$seen{$partid}++;
 2597: 	next if ($$handgrade{$part_resp} ne 'yes' 
 2598: 		 && $env{'form.lastSub'} eq 'hdgrade');
 2599: 	push(@partlist,$partid);
 2600: 	push(@gradePartRespid,$partid.'.'.$respid);
 2601: 	$request->print(&gradeBox($request,$symb,$uname,$udom,$counter,$partid,\%record));
 2602:     }
 2603:     $request->print(&gradeBox_end()); # </div>
 2604:     $request->print('</div>');
 2605: 
 2606:     $request->print('<div class="LC_grade_info_links">');
 2607:     $request->print('</div>');
 2608: 
 2609:     $result='<input type="hidden" name="partlist'.$counter.
 2610: 	'" value="'.(join ":",@partlist).'" />'."\n";
 2611:     $result.='<input type="hidden" name="gradePartRespid'.
 2612: 	'" value="'.(join ":",@gradePartRespid).'" />'."\n" if ($counter == 0);
 2613:     my $ctr = 0;
 2614:     while ($ctr < scalar(@partlist)) {
 2615: 	$result.='<input type="hidden" name="partid'.$counter.'_'.$ctr.'" value="'.
 2616: 	    $partlist[$ctr].'" />'."\n";
 2617: 	$ctr++;
 2618:     }
 2619:     $request->print($result.''."\n");
 2620: 
 2621: # Done with printing info for one student
 2622: 
 2623:     $request->print('</div>');#LC_grade_show_user
 2624: 
 2625: 
 2626:     # print end of form
 2627:     if ($counter == $total) {
 2628:         my $endform='<br /><hr /><table border="0"><tr><td>'."\n";
 2629: 	$endform.='<input type="button" value="'.&mt('Save &amp; Next').'" '.
 2630: 	    'onclick="javascript:checksubmit(this.form,\'Save & Next\','.
 2631: 	    $total.','.scalar(@partlist).');" target="_self" /> &nbsp;'."\n";
 2632: 	my $ntstu ='<select name="NTSTU">'.
 2633: 	    '<option>1</option><option>2</option>'.
 2634: 	    '<option>3</option><option>5</option>'.
 2635: 	    '<option>7</option><option>10</option></select>'."\n";
 2636: 	my $nsel = ($env{'form.NTSTU'} ne '' ? $env{'form.NTSTU'} : '1');
 2637: 	$ntstu =~ s/<option>$nsel</<option selected="selected">$nsel</;
 2638:         $endform.=&mt('[_1]student(s)',$ntstu);
 2639: 	$endform.='&nbsp;&nbsp;<input type="button" value="'.&mt('Previous').'" '.
 2640: 	    'onclick="javascript:checksubmit(this.form,\'Previous\');" target="_self" /> &nbsp;'."\n".
 2641: 	    '<input type="button" value="'.&mt('Next').'" '.
 2642: 	    'onclick="javascript:checksubmit(this.form,\'Next\');" target="_self" /> &nbsp;';
 2643:         $endform.='<span class="LC_warning">'.
 2644:                   &mt('(Next and Previous (student) do not save the scores.)').
 2645:                   '</span>'."\n" ;
 2646:         $endform.="<input type='hidden' value='".&get_increment().
 2647:             "' name='increment' />";
 2648: 	$endform.='</td></tr></table></form>';
 2649: 	$request->print($endform);
 2650:     }
 2651:     return '';
 2652: }
 2653: 
 2654: sub check_collaborators {
 2655:     my ($symb,$uname,$udom,$record,$handgrade,$counter) = @_;
 2656:     my ($result,@col_fullnames);
 2657:     my ($classlist,undef,$fullname) = &getclasslist('all','0');
 2658:     foreach my $part (keys(%$handgrade)) {
 2659: 	my $ncol = &Apache::lonnet::EXT('resource.'.$part.
 2660: 					'.maxcollaborators',
 2661: 					$symb,$udom,$uname);
 2662: 	next if ($ncol <= 0);
 2663: 	$part =~ s/\_/\./g;
 2664: 	next if ($record->{'resource.'.$part.'.collaborators'} eq '');
 2665: 	my (@good_collaborators, @bad_collaborators);
 2666: 	foreach my $possible_collaborator
 2667: 	    (split(/[,;\s]+/,$record->{'resource.'.$part.'.collaborators'})) { 
 2668: 	    $possible_collaborator =~ s/[\$\^\(\)]//g;
 2669: 	    next if ($possible_collaborator eq '');
 2670: 	    my ($co_name,$co_dom) = split(/:/,$possible_collaborator);
 2671: 	    $co_dom = $udom if (! defined($co_dom) || $co_dom =~ /^domain$/i);
 2672: 	    next if ($co_name eq $uname && $co_dom eq $udom);
 2673: 	    # Doing this grep allows 'fuzzy' specification
 2674: 	    my @matches = grep(/^\Q$co_name\E:\Q$co_dom\E$/i, 
 2675: 			       keys(%$classlist));
 2676: 	    if (! scalar(@matches)) {
 2677: 		push(@bad_collaborators, $possible_collaborator);
 2678: 	    } else {
 2679: 		push(@good_collaborators, @matches);
 2680: 	    }
 2681: 	}
 2682: 	if (scalar(@good_collaborators) != 0) {
 2683: 	    $result.='<br />'.&mt('Collaborators:').'<ol>';
 2684: 	    foreach my $name (@good_collaborators) {
 2685: 		my ($lastname,$givenn) = split(/,/,$$fullname{$name});
 2686: 		push(@col_fullnames, $givenn.' '.$lastname);
 2687: 		$result.='<li>'.$fullname->{$name}.'</li>';
 2688: 	    }
 2689: 	    $result.='</ol><br />'."\n";
 2690: 	    my ($part)=split(/\./,$part);
 2691: 	    $result.='<input type="hidden" name="collaborator'.$counter.
 2692: 		'" value="'.$part.':'.(join ':',@good_collaborators).'" />'.
 2693: 		"\n";
 2694: 	}
 2695: 	if (scalar(@bad_collaborators) > 0) {
 2696: 	    $result.='<div class="LC_warning">';
 2697: 	    $result.=&mt('This student has submitted [quant,_1,invalid collaborator]: [_2]',scalar(@bad_collaborators),join(', ',@bad_collaborators));
 2698: 	    $result .= '</div>';
 2699: 	}         
 2700: 	if (scalar(@bad_collaborators > $ncol)) {
 2701: 	    $result .= '<div class="LC_warning">';
 2702: 	    $result .= &mt('This student has submitted too many '.
 2703: 		'collaborators.  Maximum is [_1].',$ncol);
 2704: 	    $result .= '</div>';
 2705: 	}
 2706:     }
 2707:     return ($result,$fullname,\@col_fullnames);
 2708: }
 2709: 
 2710: #--- Retrieve the last submission for all the parts
 2711: sub get_last_submission {
 2712:     my ($returnhash,$is_tool)=@_;
 2713:     my (@string,$timestamp,%lasthidden);
 2714:     if ($$returnhash{'version'}) {
 2715: 	my %lasthash=();
 2716: 	my ($version);
 2717: 	for ($version=1;$version<=$$returnhash{'version'};$version++) {
 2718: 	    foreach my $key (sort(split(/\:/,
 2719: 					$$returnhash{$version.':keys'}))) {
 2720: 		$lasthash{$key}=$$returnhash{$version.':'.$key};
 2721: 		$timestamp = 
 2722: 		    &Apache::lonlocal::locallocaltime($$returnhash{$version.':timestamp'});
 2723: 	    }
 2724: 	}
 2725:         my (%typeparts,%randombytry);
 2726:         my $showsurv = 
 2727:             &Apache::lonnet::allowed('vas',$env{'request.course.id'});
 2728:         foreach my $key (sort(keys(%lasthash))) {
 2729:             if ($key =~ /\.type$/) {
 2730:                 if (($lasthash{$key} eq 'anonsurvey') || 
 2731:                     ($lasthash{$key} eq 'anonsurveycred') ||
 2732:                     ($lasthash{$key} eq 'randomizetry')) {
 2733:                     my ($ign,@parts) = split(/\./,$key);
 2734:                     pop(@parts);
 2735:                     my $id = join('.',@parts);
 2736:                     if ($lasthash{$key} eq 'randomizetry') {
 2737:                         $randombytry{$ign.'.'.$id} = $lasthash{$key};
 2738:                     } else {
 2739:                         unless ($showsurv) {
 2740:                             $typeparts{$ign.'.'.$id} = $lasthash{$key};
 2741:                         }
 2742:                     }
 2743:                     delete($lasthash{$key});
 2744:                 }
 2745:             }
 2746:         }
 2747:         my @hidden = keys(%typeparts);
 2748:         my @randomize = keys(%randombytry);
 2749: 	foreach my $key (keys(%lasthash)) {
 2750: 	    next if ($key !~ /\.submission$/);
 2751:             my $hide;
 2752:             if (@hidden) {
 2753:                 foreach my $id (@hidden) {
 2754:                     if ($key =~ /^\Q$id\E/) {
 2755:                         $hide = 'anon';
 2756:                         last;
 2757:                     }
 2758:                 }
 2759:             }
 2760:             unless ($hide) {
 2761:                 if (@randomize) {
 2762:                     foreach my $id (@randomize) {
 2763:                         if ($key =~ /^\Q$id\E/) {
 2764:                             $hide = 'rand';
 2765:                             last;
 2766:                         }
 2767:                     }
 2768:                 }
 2769:             }
 2770: 	    my ($partid,$foo) = split(/submission$/,$key);
 2771: 	    my $draft  = $lasthash{$partid.'awarddetail'} eq 'DRAFT' ? 1 : 0;
 2772:             push(@string, join(':', $key, $hide, $draft, (
 2773:                 ref($lasthash{$key}) eq 'ARRAY' ?
 2774:                     join(',', @{$lasthash{$key}}) : $lasthash{$key}) ));
 2775: 	}
 2776:     }
 2777:     if (!@string) {
 2778:         my $msg;
 2779:         if ($is_tool) {
 2780:             $msg = &mt('No grade passed back.');
 2781:         } else {
 2782:             $msg = &mt('Nothing submitted - no attempts.');
 2783:         }
 2784: 	$string[0] =
 2785: 	    '<span class="LC_warning">'.$msg.'</span>';
 2786:     }
 2787:     return (\@string,\$timestamp);
 2788: }
 2789: 
 2790: #--- High light keywords, with style choosen by user.
 2791: sub keywords_highlight {
 2792:     my $string    = shift;
 2793:     my $size      = $env{'form.kwsize'} eq '0' ? '' : 'size='.$env{'form.kwsize'};
 2794:     my $styleon   = $env{'form.kwstyle'} eq ''  ? '' : $env{'form.kwstyle'};
 2795:     (my $styleoff = $styleon) =~ s/\</\<\//;
 2796:     my @keylist   = split(/[,\s+]/,$env{'form.keywords'});
 2797:     foreach my $keyword (@keylist) {
 2798: 	$string =~ s/\b\Q$keyword\E(\b|\.)/<font color\=$env{'form.kwclr'} $size\>$styleon$keyword$styleoff<\/font>/gi;
 2799:     }
 2800:     return $string;
 2801: }
 2802: 
 2803: # For Tasks provide a mechanism to display previous version for one specific student
 2804: 
 2805: sub show_previous_task_version {
 2806:     my ($request,$symb) = @_;
 2807:     if ($symb eq '') {
 2808:         $request->print(
 2809:             '<span class="LC_error">'.
 2810:             &mt('Unable to handle ambiguous references.').
 2811:             '</span>');
 2812:         return '';
 2813:     }
 2814:     my ($uname,$udom) = ($env{'form.student'},$env{'form.userdom'});
 2815:     my $usec = &Apache::lonnet::getsection($udom,$uname,$env{'request.course.id'});
 2816:     if (!&canview($usec)) {
 2817:         $request->print(
 2818:             '<span class="LC_warning">'.
 2819:             &mt('Unable to view previous version for requested student.').
 2820:             ' '.&mt('([_1] in section [_2] in course id [_3])',
 2821:                     $uname.':'.$udom,$usec,$env{'request.course.id'}).
 2822:             '</span>');
 2823:         return;
 2824:     }
 2825:     my $mode = 'both';
 2826:     my $isTask = ($symb =~/\.task$/);
 2827:     if ($isTask) {
 2828:         if ($env{'form.previousversion'} =~ /^\d+$/) {
 2829:             if ($env{'form.fullname'} eq '') {
 2830:                 $env{'form.fullname'} =
 2831:                     &Apache::loncommon::plainname($uname,$udom,'lastname');
 2832:             }
 2833:             my $probtitle=&Apache::lonnet::gettitle($symb);
 2834:             $request->print("\n\n".
 2835:                             '<div class="LC_grade_show_user">'.
 2836:                             '<h2>'.&nameUserString(undef,$env{'form.fullname'},$uname,$udom).
 2837:                             '</h2>'."\n");
 2838:             &Apache::lonxml::clear_problem_counter();
 2839:             $request->print(&show_problem($request,$symb,$uname,$udom,1,1,$mode,
 2840:                             {'previousversion' => $env{'form.previousversion'} }));
 2841:             $request->print("\n</div>");
 2842:         }
 2843:     }
 2844:     return;
 2845: }
 2846: 
 2847: sub choose_task_version_form {
 2848:     my ($symb,$uname,$udom,$nomenu) = @_;
 2849:     my $isTask = ($symb =~/\.task$/);
 2850:     my ($current,$version,$result,$js,$displayed,$rowtitle);
 2851:     if ($isTask) {
 2852:         my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},
 2853:                                               $udom,$uname);
 2854:         if (($record{'resource.0.version'} eq '') ||
 2855:             ($record{'resource.0.version'} < 2)) {
 2856:             return ($record{'resource.0.version'},
 2857:                     $record{'resource.0.version'},$result,$js);
 2858:         } else {
 2859:             $current = $record{'resource.0.version'};
 2860:         }
 2861:         if ($env{'form.previousversion'}) {
 2862:             $displayed = $env{'form.previousversion'};
 2863:             $rowtitle = &mt('Choose another version:')
 2864:         } else {
 2865:             $displayed = $current;
 2866:             $rowtitle = &mt('Show earlier version:');
 2867:         }
 2868:         $result = '<div class="LC_left_float">';
 2869:         my $list;
 2870:         my $numversions = 0;
 2871:         for (my $i=1; $i<=$record{'resource.0.version'}; $i++) {
 2872:             if ($i == $current) {
 2873:                 if (!$env{'form.previousversion'} || $nomenu) {
 2874:                     next;
 2875:                 } else {
 2876:                     $list .= '<option value="'.$i.'">'.&mt('Current').'</option>'."\n";
 2877:                     $numversions ++;
 2878:                 }
 2879:             } elsif (defined($record{'resource.'.$i.'.0.status'})) {
 2880:                 unless ($i == $env{'form.previousversion'}) {
 2881:                     $numversions ++;
 2882:                 }
 2883:                 $list .= '<option value="'.$i.'">'.$i.'</option>'."\n";
 2884:             }
 2885:         }
 2886:         if ($numversions) {
 2887:             $symb = &HTML::Entities::encode($symb,'<>"&');
 2888:             $result .=
 2889:                 '<form name="getprev" method="post" action=""'.
 2890:                 ' onsubmit="return previousVersion('."'$uname','$udom','$symb','$displayed'".');">'.
 2891:                 &Apache::loncommon::start_data_table().
 2892:                 &Apache::loncommon::start_data_table_row().
 2893:                 '<th align="left">'.$rowtitle.'</th>'.
 2894:                 '<td><select name="version">'.
 2895:                 '<option>'.&mt('Select').'</option>'.
 2896:                 $list.
 2897:                 '</select></td>'.
 2898:                 &Apache::loncommon::end_data_table_row();
 2899:             unless ($nomenu) {
 2900:                 $result .= &Apache::loncommon::start_data_table_row().
 2901:                 '<th align="left">'.&mt('Open in new window').'</th>'.
 2902:                 '<td><span class="LC_nobreak">'.
 2903:                 '<label><input type="radio" name="prevwin" value="1" />'.
 2904:                 &mt('Yes').'</label>'.
 2905:                 '<label><input type="radio" name="prevwin" value="0" checked="checked" />'.&mt('No').'</label>'.
 2906:                 '</span></td>'.
 2907:                 &Apache::loncommon::end_data_table_row();
 2908:             }
 2909:             $result .=
 2910:                 &Apache::loncommon::start_data_table_row().
 2911:                 '<th align="left">&nbsp;</th>'.
 2912:                 '<td>'.
 2913:                 '<input type="submit" name="prevsub" value="'.&mt('Display').'" />'.
 2914:                 '</td>'.
 2915:                 &Apache::loncommon::end_data_table_row().
 2916:                 &Apache::loncommon::end_data_table().
 2917:                 '</form>';
 2918:             $js = &previous_display_javascript($nomenu,$current);
 2919:         } elsif ($displayed && $nomenu) {
 2920:             $result .= '<a href="javascript:window.close()">'.&mt('Close window').'</a>';
 2921:         } else {
 2922:             $result .= &mt('No previous versions to show for this student');
 2923:         }
 2924:         $result .= '</div>';
 2925:     }
 2926:     return ($current,$displayed,$result,$js);
 2927: }
 2928: 
 2929: sub previous_display_javascript {
 2930:     my ($nomenu,$current) = @_;
 2931:     my $js = <<"JSONE";
 2932: <script type="text/javascript">
 2933: // <![CDATA[
 2934: function previousVersion(uname,udom,symb) {
 2935:     var current = '$current';
 2936:     var version = document.getprev.version.options[document.getprev.version.selectedIndex].value;
 2937:     var prevstr = new RegExp("^\\\\d+\$");
 2938:     if (!prevstr.test(version)) {
 2939:         return false;
 2940:     }
 2941:     var url = '';
 2942:     if (version == current) {
 2943:         url = '/adm/grades?student='+uname+'&userdom='+udom+'&symb='+symb+'&command=submission';
 2944:     } else {
 2945:         url = '/adm/grades?student='+uname+'&userdom='+udom+'&symb='+symb+'&command=versionsub&previousversion='+version;
 2946:     }
 2947: JSONE
 2948:     if ($nomenu) {
 2949:         $js .= <<"JSTWO";
 2950:     document.location.href = url;
 2951: JSTWO
 2952:     } else {
 2953:         $js .= <<"JSTHREE";
 2954:     var newwin = 0;
 2955:     for (var i=0; i<document.getprev.prevwin.length; i++) {
 2956:         if (document.getprev.prevwin[i].checked == true) {
 2957:             newwin = document.getprev.prevwin[i].value;
 2958:         }
 2959:     }
 2960:     if (newwin == 1) {
 2961:         var options = 'height=600,width=800,resizable=yes,scrollbars=yes,location=no,menubar=no,toolbar=no';
 2962:         url = url+'&inhibitmenu=yes';
 2963:         if (typeof(previousWin) == 'undefined' || previousWin.closed) {
 2964:             previousWin = window.open(url,'',options,1);
 2965:         } else {
 2966:             previousWin.location.href = url;
 2967:         }
 2968:         previousWin.focus();
 2969:         return false;
 2970:     } else {
 2971:         document.location.href = url;
 2972:         return false;
 2973:     }
 2974: JSTHREE
 2975:     }
 2976:     $js .= <<"ENDJS";
 2977:     return false;
 2978: }
 2979: // ]]>
 2980: </script>
 2981: ENDJS
 2982: 
 2983: }
 2984: 
 2985: #--- Called from submission routine
 2986: sub processHandGrade {
 2987:     my ($request,$symb) = @_;
 2988:     my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
 2989:     my $button = $env{'form.gradeOpt'};
 2990:     my $ngrade = $env{'form.NCT'};
 2991:     my $ntstu  = $env{'form.NTSTU'};
 2992:     my $cdom   = $env{'course.'.$env{'request.course.id'}.'.domain'};
 2993:     my $cnum   = $env{'course.'.$env{'request.course.id'}.'.num'};
 2994: 
 2995:     if ($button eq 'Save & Next') {
 2996: 	my $ctr = 0;
 2997: 	while ($ctr < $ngrade) {
 2998: 	    my ($uname,$udom) = split(/:/,$env{'form.unamedom'.$ctr});
 2999: 	    my ($errorflag,$pts,$wgt,$numhidden) = 
 3000:                 &saveHandGrade($request,$symb,$uname,$udom,$ctr);
 3001: 	    if ($errorflag eq 'no_score') {
 3002: 		$ctr++;
 3003: 		next;
 3004: 	    }
 3005: 	    if ($errorflag eq 'not_allowed') {
 3006: 		$request->print(
 3007:                     '<span class="LC_error">'
 3008:                    .&mt('Not allowed to modify grades for [_1]',"$uname:$udom")
 3009:                    .'</span>');
 3010: 		$ctr++;
 3011: 		next;
 3012: 	    }
 3013:             if ($numhidden) {
 3014:                 $request->print(
 3015:                     '<span class="LC_info">'
 3016:                    .&mt('For [_1]: [quant,_2,transaction] hidden',"$uname:$udom",$numhidden)
 3017:                    .'</span><br />');
 3018:             }
 3019: 	    my $includemsg = $env{'form.includemsg'.$ctr};
 3020: 	    my ($subject,$message,$msgstatus) = ('','','');
 3021: 	    my $restitle = &Apache::lonnet::gettitle($symb);
 3022:             my ($feedurl,$showsymb) =
 3023: 		&get_feedurl_and_symb($symb,$uname,$udom);
 3024: 	    my $messagetail;
 3025: 	    if ($includemsg =~ /savemsg|newmsg\Q$ctr\E/) {
 3026: 		$subject = $env{'form.msgsub'} if ($includemsg =~ /msgsub/);
 3027: 		unless ($subject=~/\w/) { $subject=&mt('Grading Feedback'); }
 3028: 		$subject.=' ['.$restitle.']';
 3029: 		my (@msgnum) = split(/,/,$includemsg);
 3030: 		foreach (@msgnum) {
 3031: 		    $message.=$env{'form.'.$_} if ($_ =~ /savemsg|newmsg/ && $_ ne '');
 3032: 		}
 3033: 		$message =&Apache::lonfeedback::clear_out_html($message);
 3034: 		if ($env{'form.withgrades'.$ctr}) {
 3035: 		    $message.="\n\nPoint".($pts > 1 ? 's':'').' awarded = '.$pts.' out of '.$wgt;
 3036: 		    $messagetail = " for <a href=\"".
 3037: 		                   $feedurl."?symb=$showsymb\">$restitle</a>";
 3038: 		}
 3039: 		$msgstatus = 
 3040:                     &Apache::lonmsg::user_normal_msg($uname,$udom,$subject,
 3041: 						     $message.$messagetail,
 3042:                                                      undef,$feedurl,undef,
 3043:                                                      undef,undef,$showsymb,
 3044:                                                      $restitle);
 3045: 		$request->print('<br />'.&mt('Sending message to [_1]',$uname.':'.$udom).': '.
 3046: 				$msgstatus.'<br />');
 3047: 	    }
 3048: 	    if ($env{'form.collaborator'.$ctr}) {
 3049: 		my @collabstrs=&Apache::loncommon::get_env_multiple("form.collaborator$ctr");
 3050: 		foreach my $collabstr (@collabstrs) {
 3051: 		    my ($part,@collaborators) = split(/:/,$collabstr);
 3052: 		    foreach my $collaborator (@collaborators) {
 3053: 			my ($errorflag,$pts,$wgt) = 
 3054: 			    &saveHandGrade($request,$symb,$collaborator,$udom,$ctr,
 3055: 					   $env{'form.unamedom'.$ctr},$part);
 3056: 			if ($errorflag eq 'not_allowed') {
 3057: 			    $request->print("<span class=\"LC_error\">".&mt('Not allowed to modify grades for [_1]',"$collaborator:$udom")."</span>");
 3058: 			    next;
 3059: 			} elsif ($message ne '') {
 3060: 			    my ($baseurl,$showsymb) = 
 3061: 				&get_feedurl_and_symb($symb,$collaborator,
 3062: 						      $udom);
 3063: 			    if ($env{'form.withgrades'.$ctr}) {
 3064: 				$messagetail = " for <a href=\"".
 3065:                                     $baseurl."?symb=$showsymb\">$restitle</a>";
 3066: 			    }
 3067: 			    $msgstatus = 
 3068: 				&Apache::lonmsg::user_normal_msg($collaborator,$udom,$subject,$message.$messagetail,undef,$baseurl,undef,undef,undef,$showsymb,$restitle);
 3069: 			}
 3070: 		    }
 3071: 		}
 3072: 	    }
 3073: 	    $ctr++;
 3074: 	}
 3075:     }
 3076: 
 3077: #    if ($env{'form.handgrade'} eq 'yes') {
 3078:     if (1) {
 3079: 	# Keywords sorted in alphabatical order
 3080: 	my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
 3081: 	my %keyhash = ();
 3082: 	$env{'form.keywords'}           =~ s/,\s{0,}|\s+/ /g;
 3083: 	$env{'form.keywords'}           =~ s/^\s+|\s+$//;
 3084: 	my (@keywords) = sort(split(/\s+/,$env{'form.keywords'}));
 3085: 	$env{'form.keywords'} = join(' ',@keywords);
 3086: 	$keyhash{$symb.'_keywords'}     = $env{'form.keywords'};
 3087: 	$keyhash{$symb.'_subject'}      = $env{'form.msgsub'};
 3088: 	$keyhash{$loginuser.'_kwclr'}   = $env{'form.kwclr'};
 3089: 	$keyhash{$loginuser.'_kwsize'}  = $env{'form.kwsize'};
 3090: 	$keyhash{$loginuser.'_kwstyle'} = $env{'form.kwstyle'};
 3091: 
 3092: 	# message center - Order of message gets changed. Blank line is eliminated.
 3093: 	# New messages are saved in env for the next student.
 3094: 	# All messages are saved in nohist_handgrade.db
 3095: 	my ($ctr,$idx) = (1,1);
 3096: 	while ($ctr <= $env{'form.savemsgN'}) {
 3097: 	    if ($env{'form.savemsg'.$ctr} ne '') {
 3098: 		$keyhash{$symb.'_savemsg'.$idx} = $env{'form.savemsg'.$ctr};
 3099: 		$idx++;
 3100: 	    }
 3101: 	    $ctr++;
 3102: 	}
 3103: 	$ctr = 0;
 3104: 	while ($ctr < $ngrade) {
 3105: 	    if ($env{'form.newmsg'.$ctr} ne '') {
 3106: 		$keyhash{$symb.'_savemsg'.$idx} = $env{'form.newmsg'.$ctr};
 3107: 		$env{'form.savemsg'.$idx} = $env{'form.newmsg'.$ctr};
 3108: 		$idx++;
 3109: 	    }
 3110: 	    $ctr++;
 3111: 	}
 3112: 	$env{'form.savemsgN'} = --$idx;
 3113: 	$keyhash{$symb.'_savemsgN'} = $env{'form.savemsgN'};
 3114: 	my $putresult = &Apache::lonnet::put
 3115: 	    ('nohist_handgrade',\%keyhash,$cdom,$cnum);
 3116:     }
 3117:     # Called by Save & Refresh from Highlight Attribute Window
 3118:     my (undef,undef,$fullname) = &getclasslist($env{'form.section'},'1');
 3119:     if ($env{'form.refresh'} eq 'on') {
 3120: 	my ($ctr,$total) = (0,0);
 3121: 	while ($ctr < $ngrade) {
 3122: 	    $total++ if  $env{'form.unamedom'.$ctr} ne '';
 3123: 	    $ctr++;
 3124: 	}
 3125: 	$env{'form.NTSTU'}=$ngrade;
 3126: 	$ctr = 0;
 3127: 	while ($ctr < $total) {
 3128: 	    my $processUser = $env{'form.unamedom'.$ctr};
 3129: 	    ($env{'form.student'},$env{'form.userdom'}) = split(/:/,$processUser);
 3130: 	    $env{'form.fullname'} = $$fullname{$processUser};
 3131: 	    &submission($request,$ctr,$total-1,$symb);
 3132: 	    $ctr++;
 3133: 	}
 3134: 	return '';
 3135:     }
 3136: 
 3137:     # Get the next/previous one or group of students
 3138:     my $firststu = $env{'form.unamedom0'};
 3139:     my $laststu = $env{'form.unamedom'.($ngrade-1)};
 3140:     my $ctr = 2;
 3141:     while ($laststu eq '') {
 3142: 	$laststu  = $env{'form.unamedom'.($ngrade-$ctr)};
 3143: 	$ctr++;
 3144: 	$laststu = $firststu if ($ctr > $ngrade);
 3145:     }
 3146: 
 3147:     my (@parsedlist,@nextlist);
 3148:     my ($nextflg) = 0;
 3149:     foreach my $item (sort 
 3150: 	     {
 3151: 		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
 3152: 		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
 3153: 		 }
 3154: 		 return $a cmp $b;
 3155: 	     } (keys(%$fullname))) {
 3156: # FIXME: this is fishy, looks like the button label
 3157: 	if ($nextflg == 1 && $button =~ /Next$/) {
 3158: 	    push(@parsedlist,$item);
 3159: 	}
 3160: 	$nextflg = 1 if ($item eq $laststu);
 3161: 	if ($button eq 'Previous') {
 3162: 	    last if ($item eq $firststu);
 3163: 	    push(@parsedlist,$item);
 3164: 	}
 3165:     }
 3166:     $ctr = 0;
 3167: # FIXME: this is fishy, looks like the button label
 3168:     @parsedlist = reverse @parsedlist if ($button eq 'Previous');
 3169:     my $res_error;
 3170:     my ($partlist) = &response_type($symb,\$res_error);
 3171:     if ($res_error) {
 3172:         $request->print(&navmap_errormsg());
 3173:         return;
 3174:     }
 3175:     foreach my $student (@parsedlist) {
 3176: 	my $submitonly=$env{'form.submitonly'};
 3177: 	my ($uname,$udom) = split(/:/,$student);
 3178: 	
 3179: 	if ($submitonly eq 'queued') {
 3180: 	    my %queue_status = 
 3181: 		&Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
 3182: 							$udom,$uname);
 3183: 	    next if (!defined($queue_status{'gradingqueue'}));
 3184: 	}
 3185: 
 3186: 	if ($submitonly =~ /^(yes|graded|incorrect)$/) {
 3187: #	    my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
 3188: 	    my %status=&student_gradeStatus($symb,$udom,$uname,$partlist);
 3189: 	    my $submitted = 0;
 3190: 	    my $ungraded = 0;
 3191: 	    my $incorrect = 0;
 3192: 	    foreach my $item (keys(%status)) {
 3193: 		$submitted = 1 if ($status{$item} ne 'nothing');
 3194: 		$ungraded = 1 if ($status{$item} =~ /^ungraded/);
 3195: 		$incorrect = 1 if ($status{$item} =~ /^incorrect/);
 3196: 		my ($foo,$partid,$foo1) = split(/\./,$item);
 3197: 		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
 3198: 		    $submitted = 0;
 3199: 		}
 3200: 	    }
 3201: 	    next if (!$submitted && ($submitonly eq 'yes' ||
 3202: 				     $submitonly eq 'incorrect' ||
 3203: 				     $submitonly eq 'graded'));
 3204: 	    next if (!$ungraded && ($submitonly eq 'graded'));
 3205: 	    next if (!$incorrect && $submitonly eq 'incorrect');
 3206: 	}
 3207: 	push(@nextlist,$student) if ($ctr < $ntstu);
 3208: 	last if ($ctr == $ntstu);
 3209: 	$ctr++;
 3210:     }
 3211: 
 3212:     $ctr = 0;
 3213:     my $total = scalar(@nextlist)-1;
 3214: 
 3215:     foreach (sort(@nextlist)) {
 3216: 	my ($uname,$udom,$submitter) = split(/:/);
 3217: 	$env{'form.student'}  = $uname;
 3218: 	$env{'form.userdom'}  = $udom;
 3219: 	$env{'form.fullname'} = $$fullname{$_};
 3220: 	&submission($request,$ctr,$total,$symb);
 3221: 	$ctr++;
 3222:     }
 3223:     if ($total < 0) {
 3224: 	my $the_end.='<p>'.&mt('[_1]Message:[_2] No more students for this section or class.','<b>','</b>').'</p>'."\n";
 3225: 	$request->print($the_end);
 3226:     }
 3227:     return '';
 3228: }
 3229: 
 3230: #---- Save the score and award for each student, if changed
 3231: sub saveHandGrade {
 3232:     my ($request,$symb,$stuname,$domain,$newflg,$submitter,$part) = @_;
 3233:     my @version_parts;
 3234:     my $usec = &Apache::lonnet::getsection($domain,$stuname,
 3235: 					   $env{'request.course.id'});
 3236:     if (!&canmodify($usec)) { return('not_allowed'); }
 3237:     my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$domain,$stuname);
 3238:     my @parts_graded;
 3239:     my %newrecord  = ();
 3240:     my ($pts,$wgt,$totchg) = ('','',0);
 3241:     my %aggregate = ();
 3242:     my $aggregateflag = 0;
 3243:     if ($env{'form.HIDE'.$newflg}) {
 3244:         my ($version,$parts) = split(/:/,$env{'form.HIDE'.$newflg},2);
 3245:         my $numchgs = &makehidden($version,$parts,\%record,$symb,$domain,$stuname,1);
 3246:         $totchg += $numchgs;
 3247:     }
 3248:     my @parts = split(/:/,$env{'form.partlist'.$newflg});
 3249:     foreach my $new_part (@parts) {
 3250: 	#collaborator ($submi may vary for different parts
 3251: 	if ($submitter && $new_part ne $part) { next; }
 3252: 	my $dropMenu = $env{'form.GD_SEL'.$newflg.'_'.$new_part};
 3253: 	if ($dropMenu eq 'excused') {
 3254: 	    if ($record{'resource.'.$new_part.'.solved'} ne 'excused') {
 3255: 		$newrecord{'resource.'.$new_part.'.solved'} = 'excused';
 3256: 		if (exists($record{'resource.'.$new_part.'.awarded'})) {
 3257: 		    $newrecord{'resource.'.$new_part.'.awarded'} = '';
 3258: 		}
 3259: 	        $newrecord{'resource.'.$new_part.'.regrader'}="$env{'user.name'}:$env{'user.domain'}";
 3260: 	    }
 3261: 	} elsif ($dropMenu eq 'reset status'
 3262: 		 && exists($record{'resource.'.$new_part.'.solved'})) { #don't bother if no old records -> no attempts
 3263: 	    foreach my $key (keys(%record)) {
 3264: 		if ($key=~/^resource\.\Q$new_part\E\./) { $newrecord{$key} = ''; }
 3265: 	    }
 3266: 	    $newrecord{'resource.'.$new_part.'.regrader'}=
 3267: 		"$env{'user.name'}:$env{'user.domain'}";
 3268:             my $totaltries = $record{'resource.'.$part.'.tries'};
 3269: 
 3270:             my %last_resets = &get_last_resets($symb,$env{'request.course.id'},
 3271: 					       [$new_part]);
 3272:             my $aggtries =$totaltries;
 3273:             if ($last_resets{$new_part}) {
 3274:                 $aggtries = &get_num_tries(\%record,$last_resets{$new_part},
 3275: 					   $new_part);
 3276:             }
 3277: 
 3278:             my $solvedstatus = $record{'resource.'.$new_part.'.solved'};
 3279:             if ($aggtries > 0) {
 3280:                 &decrement_aggs($symb,$new_part,\%aggregate,$aggtries,$totaltries,$solvedstatus);
 3281:                 $aggregateflag = 1;
 3282:             }
 3283: 	} elsif ($dropMenu eq '') {
 3284: 	    $pts = ($env{'form.GD_BOX'.$newflg.'_'.$new_part} ne '' ? 
 3285: 		    $env{'form.GD_BOX'.$newflg.'_'.$new_part} : 
 3286: 		    $env{'form.RADVAL'.$newflg.'_'.$new_part});
 3287: 	    if ($pts eq '' && $env{'form.GD_SEL'.$newflg.'_'.$new_part} eq '') {
 3288: 		next;
 3289: 	    }
 3290: 	    $wgt = $env{'form.WGT'.$newflg.'_'.$new_part} eq '' ? 1 : 
 3291: 		$env{'form.WGT'.$newflg.'_'.$new_part};
 3292: 	    my $partial= $pts/$wgt;
 3293: 	    if ($partial eq $record{'resource.'.$new_part.'.awarded'}) {
 3294: 		#do not update score for part if not changed.
 3295:                 &handback_files($request,$symb,$stuname,$domain,$newflg,$new_part,\%newrecord);
 3296: 		next;
 3297: 	    } else {
 3298: 	        push(@parts_graded,$new_part);
 3299: 	    }
 3300: 	    if ($record{'resource.'.$new_part.'.awarded'} ne $partial) {
 3301: 		$newrecord{'resource.'.$new_part.'.awarded'}  = $partial;
 3302: 	    }
 3303: 	    my $reckey = 'resource.'.$new_part.'.solved';
 3304: 	    if ($partial == 0) {
 3305: 		if ($record{$reckey} ne 'incorrect_by_override') {
 3306: 		    $newrecord{$reckey} = 'incorrect_by_override';
 3307: 		}
 3308: 	    } else {
 3309: 		if ($record{$reckey} ne 'correct_by_override') {
 3310: 		    $newrecord{$reckey} = 'correct_by_override';
 3311: 		}
 3312: 	    }	    
 3313: 	    if ($submitter && 
 3314: 		($record{'resource.'.$new_part.'.submitted_by'} ne $submitter)) {
 3315: 		$newrecord{'resource.'.$new_part.'.submitted_by'} = $submitter;
 3316: 	    }
 3317: 	    $newrecord{'resource.'.$new_part.'.regrader'}=
 3318: 		"$env{'user.name'}:$env{'user.domain'}";
 3319: 	}
 3320: 	# unless problem has been graded, set flag to version the submitted files
 3321: 	unless ($record{'resource.'.$new_part.'.solved'} =~ /^correct_/  || 
 3322: 	        $record{'resource.'.$new_part.'.solved'} eq 'incorrect_by_override' ||
 3323: 	        $dropMenu eq 'reset status')
 3324: 	   {
 3325: 	    push(@version_parts,$new_part);
 3326: 	}
 3327:     }
 3328:     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 3329:     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 3330: 
 3331:     if (%newrecord) {
 3332:         if (@version_parts) {
 3333:             my @changed_keys = &version_portfiles(\%record, \@parts_graded, 
 3334:                                 $env{'request.course.id'}, $symb, $domain, $stuname, \@version_parts);
 3335: 	    @newrecord{@changed_keys} = @record{@changed_keys};
 3336: 	    foreach my $new_part (@version_parts) {
 3337: 		&handback_files($request,$symb,$stuname,$domain,$newflg,
 3338: 				$new_part,\%newrecord);
 3339: 	    }
 3340:         }
 3341: 	&Apache::lonnet::cstore(\%newrecord,$symb,
 3342: 				$env{'request.course.id'},$domain,$stuname);
 3343: 	&check_and_remove_from_queue(\@parts,\%record,\%newrecord,$symb,
 3344: 				     $cdom,$cnum,$domain,$stuname);
 3345:     }
 3346:     if ($aggregateflag) {
 3347:         &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
 3348: 			      $cdom,$cnum);
 3349:     }
 3350:     return ('',$pts,$wgt,$totchg);
 3351: }
 3352: 
 3353: sub makehidden {
 3354:     my ($version,$parts,$record,$symb,$domain,$stuname,$tolog) = @_;
 3355:     return unless (ref($record) eq 'HASH');
 3356:     my %modified;
 3357:     my $numchanged = 0;
 3358:     if (exists($record->{$version.':keys'})) {
 3359:         my $partsregexp = $parts;
 3360:         $partsregexp =~ s/,/|/g;
 3361:         foreach my $key (split(/\:/,$record->{$version.':keys'})) {
 3362:             if ($key =~ /^resource\.(?:$partsregexp)\.([^\.]+)$/) {
 3363:                  my $item = $1;
 3364:                  unless (($item eq 'solved') || ($item =~ /^award(|msg|ed)$/)) {
 3365:                      $modified{$key} = $record->{$version.':'.$key};
 3366:                  }
 3367:             } elsif ($key =~ m{^(resource\.(?:$partsregexp)\.[^\.]+\.)(.+)$}) {
 3368:                 $modified{$1.'hidden'.$2} = $record->{$version.':'.$key};
 3369:             } elsif ($key =~ /^(ip|timestamp|host)$/) {
 3370:                 $modified{$key} = $record->{$version.':'.$key};
 3371:             }
 3372:         }
 3373:         if (keys(%modified)) {
 3374:             if (&Apache::lonnet::putstore($env{'request.course.id'},$symb,$version,\%modified,
 3375:                                           $domain,$stuname,$tolog) eq 'ok') {
 3376:                 $numchanged ++;
 3377:             }
 3378:         }
 3379:     }
 3380:     return $numchanged;
 3381: }
 3382: 
 3383: sub check_and_remove_from_queue {
 3384:     my ($parts,$record,$newrecord,$symb,$cdom,$cnum,$domain,$stuname) = @_;
 3385:     my @ungraded_parts;
 3386:     foreach my $part (@{$parts}) {
 3387: 	if (    $record->{   'resource.'.$part.'.awarded'} eq ''
 3388: 	     && $record->{   'resource.'.$part.'.solved' } ne 'excused'
 3389: 	     && $newrecord->{'resource.'.$part.'.awarded'} eq ''
 3390: 	     && $newrecord->{'resource.'.$part.'.solved' } ne 'excused'
 3391: 		) {
 3392: 	    push(@ungraded_parts, $part);
 3393: 	}
 3394:     }
 3395:     if ( !@ungraded_parts ) {
 3396: 	&Apache::bridgetask::remove_from_queue('gradingqueue',$symb,$cdom,
 3397: 					       $cnum,$domain,$stuname);
 3398:     }
 3399: }
 3400: 
 3401: sub handback_files {
 3402:     my ($request,$symb,$stuname,$domain,$newflg,$new_part,$newrecord) = @_;
 3403:     my $portfolio_root = '/userfiles/portfolio';
 3404:     my $res_error;
 3405:     my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
 3406:     if ($res_error) {
 3407:         $request->print('<br />'.&navmap_errormsg().'<br />');
 3408:         return;
 3409:     }
 3410:     my @handedback;
 3411:     my $file_msg;
 3412:     my @part_response_id = &flatten_responseType($responseType);
 3413:     foreach my $part_response_id (@part_response_id) {
 3414:     	my ($part_id,$resp_id) = @{ $part_response_id };
 3415: 	my $part_resp = join('_',@{ $part_response_id });
 3416:         if (($env{'form.'.$newflg.'_'.$part_resp.'_countreturndoc'} =~ /^\d+$/) & ($new_part eq $part_id)) {
 3417:             for (my $counter=1; $counter<=$env{'form.'.$newflg.'_'.$part_resp.'_countreturndoc'}; $counter++) {
 3418:                 # if multiple files are uploaded names will be 'returndoc2','returndoc3' 
 3419:                 if ($env{'form.'.$newflg.'_'.$part_resp.'_returndoc'.$counter}) {
 3420:                     my $fname=$env{'form.'.$newflg.'_'.$part_resp.'_returndoc'.$counter.'.filename'};
 3421:                     my ($directory,$answer_file) = 
 3422:                         ($env{'form.'.$newflg.'_'.$part_resp.'_origdoc'.$counter} =~ /^(.*?)([^\/]*)$/);
 3423:                     my ($answer_name,$answer_ver,$answer_ext) =
 3424: 		        &Apache::lonnet::file_name_version_ext($answer_file);
 3425: 		    my ($portfolio_path) = ($directory =~ /^.+$stuname\/portfolio(.*)/);
 3426:                     my $getpropath = 1;
 3427:                     my ($dir_list,$listerror) = 
 3428:                         &Apache::lonnet::dirlist($portfolio_root.$portfolio_path,
 3429:                                                  $domain,$stuname,$getpropath);
 3430: 		    my $version = &Apache::lonnet::get_next_version($answer_name,$answer_ext,$dir_list);
 3431:                     # fix filename
 3432:                     my ($save_file_name) = (($directory.$answer_name.".$version.".$answer_ext) =~ /^.+\/${stuname}\/(.*)/);
 3433:                     my $result=&Apache::lonnet::finishuserfileupload($stuname,$domain,
 3434:             	                                $newflg.'_'.$part_resp.'_returndoc'.$counter,
 3435:             	                                $save_file_name);
 3436:                     if ($result !~ m|^/uploaded/|) {
 3437:                         $request->print('<br /><span class="LC_error">'.
 3438:                             &mt('An error occurred ([_1]) while trying to upload [_2].',
 3439:                                 $result,$newflg.'_'.$part_resp.'_returndoc'.$counter).
 3440:                                         '</span>');
 3441:                     } else {
 3442:                         # mark the file as read only
 3443:                         push(@handedback,$save_file_name);
 3444: 			if (exists($$newrecord{"resource.$new_part.$resp_id.handback"})) {
 3445: 			    $$newrecord{"resource.$new_part.$resp_id.handback"}.=',';
 3446: 			}
 3447:                         $$newrecord{"resource.$new_part.$resp_id.handback"} .= $save_file_name;
 3448: 			$file_msg.= '<span class="LC_filename"><a href="/uploaded/'."$domain/$stuname/".$save_file_name.'">'.$save_file_name."</a></span> <br />";
 3449:                     }
 3450:                     $request->print('<br />'.&mt('[_1] will be the uploaded filename [_2]','<span class="LC_info">'.$fname.'</span>','<span class="LC_filename">'.$env{'form.'.$newflg.'_'.$part_resp.'_origdoc'.$counter}.'</span>'));
 3451:                 }
 3452:             }
 3453:         }
 3454:     }
 3455:     if (@handedback > 0) {
 3456:         $request->print('<br />');
 3457:         my @what = ($symb,$env{'request.course.id'},'handback');
 3458:         &Apache::lonnet::mark_as_readonly($domain,$stuname,\@handedback,\@what);
 3459:         my $user_lh = &Apache::loncommon::user_lang($stuname,$domain,$env{'request.course.id'});    
 3460:         my ($subject,$message);
 3461:         if (scalar(@handedback) == 1) {
 3462:             $subject = &mt_user($user_lh,'File Handed Back by Instructor');
 3463:             $message = &mt_user($user_lh,'A file has been returned that was originally submitted in response to: ');
 3464:         } else {
 3465:             $subject = &mt_user($user_lh,'Files Handed Back by Instructor');
 3466:             $message = &mt_user($user_lh,'Files have been returned that were originally submitted in response to: ');
 3467:         }
 3468:         $message .= "<p><strong>".&Apache::lonnet::gettitle($symb)." </strong></p>";
 3469:         $message .= &mt_user($user_lh,'The returned file(s) are named: [_1]',"<br />$file_msg <br />").
 3470:                     &mt_user($user_lh,'The file(s) can be found in your [_1]portfolio[_2].','<a href="/adm/portfolio">','</a>');
 3471:         my ($feedurl,$showsymb) =
 3472:             &get_feedurl_and_symb($symb,$domain,$stuname);
 3473:         my $restitle = &Apache::lonnet::gettitle($symb);
 3474:         $subject .= ' '.&mt_user($user_lh,'(File Returned)').' ['.$restitle.']';
 3475:         my $msgstatus =
 3476:              &Apache::lonmsg::user_normal_msg($stuname,$domain,$subject,
 3477:                  $message,undef,$feedurl,undef,undef,undef,$showsymb,
 3478:                  $restitle);
 3479:         if ($msgstatus) {
 3480:             $request->print(&mt('Notification message status: [_1]','<span class="LC_info">'.$msgstatus.'</span>').'<br />');
 3481:         }
 3482:     }
 3483:     return;
 3484: }
 3485: 
 3486: sub get_feedurl_and_symb {
 3487:     my ($symb,$uname,$udom) = @_;
 3488:     my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
 3489:     $url = &Apache::lonnet::clutter($url);
 3490:     my $encrypturl=&Apache::lonnet::EXT('resource.0.encrypturl',
 3491: 					$symb,$udom,$uname);
 3492:     if ($encrypturl =~ /^yes$/i) {
 3493: 	&Apache::lonenc::encrypted(\$url,1);
 3494: 	&Apache::lonenc::encrypted(\$symb,1);
 3495:     }
 3496:     return ($url,$symb);
 3497: }
 3498: 
 3499: sub get_submitted_files {
 3500:     my ($udom,$uname,$partid,$respid,$record) = @_;
 3501:     my @files;
 3502:     if ($$record{"resource.$partid.$respid.portfiles"}) {
 3503:         my $file_url = '/uploaded/'.$udom.'/'.$uname.'/portfolio';
 3504:         foreach my $file (split(',',$$record{"resource.$partid.$respid.portfiles"})) {
 3505:     	    push(@files,$file_url.$file);
 3506:         }
 3507:     }
 3508:     if ($$record{"resource.$partid.$respid.uploadedurl"}) {
 3509:         push(@files,$$record{"resource.$partid.$respid.uploadedurl"});
 3510:     }
 3511:     return (\@files);
 3512: }
 3513: 
 3514: # ----------- Provides number of tries since last reset.
 3515: sub get_num_tries {
 3516:     my ($record,$last_reset,$part) = @_;
 3517:     my $timestamp = '';
 3518:     my $num_tries = 0;
 3519:     if ($$record{'version'}) {
 3520:         for (my $version=$$record{'version'};$version>=1;$version--) {
 3521:             if (exists($$record{$version.':resource.'.$part.'.solved'})) {
 3522:                 $timestamp = $$record{$version.':timestamp'};
 3523:                 if ($timestamp > $last_reset) {
 3524:                     $num_tries ++;
 3525:                 } else {
 3526:                     last;
 3527:                 }
 3528:             }
 3529:         }
 3530:     }
 3531:     return $num_tries;
 3532: }
 3533: 
 3534: # ----------- Determine decrements required in aggregate totals 
 3535: sub decrement_aggs {
 3536:     my ($symb,$part,$aggregate,$aggtries,$totaltries,$solvedstatus) = @_;
 3537:     my %decrement = (
 3538:                         attempts => 0,
 3539:                         users => 0,
 3540:                         correct => 0
 3541:                     );
 3542:     $decrement{'attempts'} = $aggtries;
 3543:     if ($solvedstatus =~ /^correct/) {
 3544:         $decrement{'correct'} = 1;
 3545:     }
 3546:     if ($aggtries == $totaltries) {
 3547:         $decrement{'users'} = 1;
 3548:     }
 3549:     foreach my $type (keys(%decrement)) {
 3550:         $$aggregate{$symb."\0".$part."\0".$type} = -$decrement{$type};
 3551:     }
 3552:     return;
 3553: }
 3554: 
 3555: # ----------- Determine timestamps for last reset of aggregate totals for parts  
 3556: sub get_last_resets {
 3557:     my ($symb,$courseid,$partids) =@_;
 3558:     my %last_resets;
 3559:     my $cdom = $env{'course.'.$courseid.'.domain'};
 3560:     my $cname = $env{'course.'.$courseid.'.num'};
 3561:     my @keys;
 3562:     foreach my $part (@{$partids}) {
 3563: 	push(@keys,"$symb\0$part\0resettime");
 3564:     }
 3565:     my %results=&Apache::lonnet::get('nohist_resourcetracker',\@keys,
 3566: 				     $cdom,$cname);
 3567:     foreach my $part (@{$partids}) {
 3568: 	$last_resets{$part}=$results{"$symb\0$part\0resettime"};
 3569:     }
 3570:     return %last_resets;
 3571: }
 3572: 
 3573: # ----------- Handles creating versions for portfolio files as answers
 3574: sub version_portfiles {
 3575:     my ($record, $parts_graded, $courseid, $symb, $domain, $stu_name, $v_flag) = @_;
 3576:     my $version_parts = join('|',@$v_flag);
 3577:     my @returned_keys;
 3578:     my $parts = join('|', @$parts_graded);
 3579:     foreach my $key (keys(%$record)) {
 3580:         my $new_portfiles;
 3581:         if ($key =~ /^resource\.($version_parts)\./ && $key =~ /\.portfiles$/ ) {
 3582:             my @versioned_portfiles;
 3583:             my @portfiles = split(/\s*,\s*/,$$record{$key});
 3584:             if (@portfiles) {
 3585:                 &Apache::lonnet::portfiles_versioning($symb,$domain,$stu_name,\@portfiles,
 3586:                                                       \@versioned_portfiles);
 3587:             }
 3588:             $$record{$key} = join(',',@versioned_portfiles);
 3589:             push(@returned_keys,$key);
 3590:         }
 3591:     } 
 3592:     return (@returned_keys);   
 3593: }
 3594: 
 3595: #--------------------------------------------------------------------------------------
 3596: #
 3597: #-------------------------- Next few routines handles grading by section or whole class
 3598: #
 3599: #--- Javascript to handle grading by section or whole class
 3600: sub viewgrades_js {
 3601:     my ($request) = shift;
 3602: 
 3603:     my $alertmsg = &mt('A number equal or greater than 0 is expected. Entered value = ');
 3604:     &js_escape(\$alertmsg);
 3605:     $request->print(&Apache::lonhtmlcommon::scripttag(<<VIEWJAVASCRIPT));
 3606:    function writePoint(partid,weight,point) {
 3607: 	var radioButton = document.classgrade["RADVAL_"+partid];
 3608: 	var textbox = document.classgrade["TEXTVAL_"+partid];
 3609: 	if (point == "textval") {
 3610: 	    point = document.classgrade["TEXTVAL_"+partid].value;
 3611: 	    if (isNaN(point) || parseFloat(point) < 0) {
 3612: 		alert("$alertmsg"+parseFloat(point));
 3613: 		var resetbox = false;
 3614: 		for (var i=0; i<radioButton.length; i++) {
 3615: 		    if (radioButton[i].checked) {
 3616: 			textbox.value = i;
 3617: 			resetbox = true;
 3618: 		    }
 3619: 		}
 3620: 		if (!resetbox) {
 3621: 		    textbox.value = "";
 3622: 		}
 3623: 		return;
 3624: 	    }
 3625: 	    if (parseFloat(point) > parseFloat(weight)) {
 3626: 		var resp = confirm("You entered a value ("+parseFloat(point)+
 3627: 				   ") greater than the weight for the part. Accept?");
 3628: 		if (resp == false) {
 3629: 		    textbox.value = "";
 3630: 		    return;
 3631: 		}
 3632: 	    }
 3633: 	    for (var i=0; i<radioButton.length; i++) {
 3634: 		radioButton[i].checked=false;
 3635: 		if (parseFloat(point) == i) {
 3636: 		    radioButton[i].checked=true;
 3637: 		}
 3638: 	    }
 3639: 
 3640: 	} else {
 3641: 	    textbox.value = parseFloat(point);
 3642: 	}
 3643: 	for (i=0;i<document.classgrade.total.value;i++) {
 3644: 	    var user = document.classgrade["ctr"+i].value;
 3645: 	    user = user.replace(new RegExp(':', 'g'),"_");
 3646: 	    var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 3647: 	    var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 3648: 	    var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 3649: 	    if (saveval != "correct") {
 3650: 		scorename.value = point;
 3651: 		if (selname[0].selected != true) {
 3652: 		    selname[0].selected = true;
 3653: 		}
 3654: 	    }
 3655: 	}
 3656: 	document.classgrade["SELVAL_"+partid][0].selected = true;
 3657:     }
 3658: 
 3659:     function writeRadText(partid,weight) {
 3660: 	var selval   = document.classgrade["SELVAL_"+partid];
 3661: 	var radioButton = document.classgrade["RADVAL_"+partid];
 3662:         var override = document.classgrade["FORCE_"+partid].checked;
 3663: 	var textbox = document.classgrade["TEXTVAL_"+partid];
 3664: 	if (selval[1].selected || selval[2].selected) {
 3665: 	    for (var i=0; i<radioButton.length; i++) {
 3666: 		radioButton[i].checked=false;
 3667: 
 3668: 	    }
 3669: 	    textbox.value = "";
 3670: 
 3671: 	    for (i=0;i<document.classgrade.total.value;i++) {
 3672: 		var user = document.classgrade["ctr"+i].value;
 3673: 		user = user.replace(new RegExp(':', 'g'),"_");
 3674: 		var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 3675: 		var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 3676: 		var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 3677: 		if ((saveval != "correct") || override) {
 3678: 		    scorename.value = "";
 3679: 		    if (selval[1].selected) {
 3680: 			selname[1].selected = true;
 3681: 		    } else {
 3682: 			selname[2].selected = true;
 3683: 			if (Number(document.classgrade["GD_"+user+"_"+partid+"_tries"].value)) 
 3684: 			{document.classgrade["GD_"+user+"_"+partid+"_tries"].value = '0';}
 3685: 		    }
 3686: 		}
 3687: 	    }
 3688: 	} else {
 3689: 	    for (i=0;i<document.classgrade.total.value;i++) {
 3690: 		var user = document.classgrade["ctr"+i].value;
 3691: 		user = user.replace(new RegExp(':', 'g'),"_");
 3692: 		var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 3693: 		var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 3694: 		var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 3695: 		if ((saveval != "correct") || override) {
 3696: 		    scorename.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
 3697: 		    selname[0].selected = true;
 3698: 		}
 3699: 	    }
 3700: 	}	    
 3701:     }
 3702: 
 3703:     function changeSelect(partid,user) {
 3704: 	var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
 3705: 	var textbox = document.classgrade["GD_"+user+'_'+partid+"_awarded"];
 3706: 	var point  = textbox.value;
 3707: 	var weight = document.classgrade["weight_"+partid].value;
 3708: 
 3709: 	if (isNaN(point) || parseFloat(point) < 0) {
 3710: 	    alert("$alertmsg"+parseFloat(point));
 3711: 	    textbox.value = "";
 3712: 	    return;
 3713: 	}
 3714: 	if (parseFloat(point) > parseFloat(weight)) {
 3715: 	    var resp = confirm("You entered a value ("+parseFloat(point)+
 3716: 			       ") greater than the weight of the part. Accept?");
 3717: 	    if (resp == false) {
 3718: 		textbox.value = "";
 3719: 		return;
 3720: 	    }
 3721: 	}
 3722: 	selval[0].selected = true;
 3723:     }
 3724: 
 3725:     function changeOneScore(partid,user) {
 3726: 	var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
 3727: 	if (selval[1].selected || selval[2].selected) {
 3728: 	    document.classgrade["GD_"+user+'_'+partid+"_awarded"].value = "";
 3729: 	    if (selval[2].selected) {
 3730: 		document.classgrade["GD_"+user+'_'+partid+"_tries"].value = "0";
 3731: 	    }
 3732:         }
 3733:     }
 3734: 
 3735:     function resetEntry(numpart) {
 3736: 	for (ctpart=0;ctpart<numpart;ctpart++) {
 3737: 	    var partid = document.classgrade["partid_"+ctpart].value;
 3738: 	    var radioButton = document.classgrade["RADVAL_"+partid];
 3739: 	    var textbox = document.classgrade["TEXTVAL_"+partid];
 3740: 	    var selval  = document.classgrade["SELVAL_"+partid];
 3741: 	    for (var i=0; i<radioButton.length; i++) {
 3742: 		radioButton[i].checked=false;
 3743: 
 3744: 	    }
 3745: 	    textbox.value = "";
 3746: 	    selval[0].selected = true;
 3747: 
 3748: 	    for (i=0;i<document.classgrade.total.value;i++) {
 3749: 		var user = document.classgrade["ctr"+i].value;
 3750: 		user = user.replace(new RegExp(':', 'g'),"_");
 3751: 		var resetscore = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 3752: 		resetscore.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
 3753: 		var resettries = document.classgrade["GD_"+user+"_"+partid+"_tries"];
 3754: 		resettries.value = document.classgrade["GD_"+user+"_"+partid+"_tries_s"].value;
 3755: 		var saveselval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 3756: 		var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 3757: 		if (saveselval == "excused") {
 3758: 		    if (selname[1].selected == false) { selname[1].selected = true;}
 3759: 		} else {
 3760: 		    if (selname[0].selected == false) {selname[0].selected = true};
 3761: 		}
 3762: 	    }
 3763: 	}
 3764:     }
 3765: 
 3766: VIEWJAVASCRIPT
 3767: }
 3768: 
 3769: #--- show scores for a section or whole class w/ option to change/update a score
 3770: sub viewgrades {
 3771:     my ($request,$symb) = @_;
 3772:     my ($is_tool,$toolsymb);
 3773:     if ($symb =~ /ext\.tool$/) {
 3774:         $is_tool = 1;
 3775:         $toolsymb = $symb;
 3776:     }
 3777:     &viewgrades_js($request);
 3778: 
 3779:     #need to make sure we have the correct data for later EXT calls, 
 3780:     #thus invalidate the cache
 3781:     &Apache::lonnet::devalidatecourseresdata(
 3782:                  $env{'course.'.$env{'request.course.id'}.'.num'},
 3783:                  $env{'course.'.$env{'request.course.id'}.'.domain'});
 3784:     &Apache::lonnet::clear_EXT_cache_status();
 3785: 
 3786:     my $result='<h3><span class="LC_info">'.&mt('Manual Grading').'</span></h3>';
 3787: 
 3788:     #view individual student submission form - called using Javascript viewOneStudent
 3789:     $result.=&jscriptNform($symb);
 3790: 
 3791:     #beginning of class grading form
 3792:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
 3793:     $result.= '<form action="/adm/grades" method="post" name="classgrade">'."\n".
 3794: 	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 3795: 	'<input type="hidden" name="command" value="editgrades" />'."\n".
 3796: 	&build_section_inputs().
 3797: 	'<input type="hidden" name="Status" value="'.$env{'stu_status'}.'" />'."\n".
 3798: 
 3799:     #retrieve selected groups
 3800:     my (@groups,$group_display);
 3801:     @groups = &Apache::loncommon::get_env_multiple('form.group');
 3802:     if (grep(/^all$/,@groups)) {
 3803:         @groups = ('all');
 3804:     } elsif (grep(/^none$/,@groups)) {
 3805:         @groups = ('none');
 3806:     } elsif (@groups > 0) {
 3807:         $group_display = join(', ',@groups);
 3808:     }
 3809: 
 3810:     my ($common_header,$specific_header,@sections,$section_display);
 3811:     @sections = &Apache::loncommon::get_env_multiple('form.section');
 3812:     if (grep(/^all$/,@sections)) {
 3813:         @sections = ('all');
 3814:         if ($group_display) {
 3815:             $common_header = &mt('Assign Common Grade to Students in Group(s) [_1]',$group_display);
 3816:             $specific_header = &mt('Assign Grade to Specific Students in Group(s) [_1]',$group_display);
 3817:         } elsif (grep(/^none$/,@groups)) {
 3818:             $common_header = &mt('Assign Common Grade to Students not assigned to any groups');
 3819:             $specific_header = &mt('Assign Grade to Specific Students not assigned to any groups');
 3820:         } else {
 3821: 	    $common_header = &mt('Assign Common Grade to Class');
 3822:             $specific_header = &mt('Assign Grade to Specific Students in Class');
 3823:         }
 3824:     } elsif (grep(/^none$/,@sections)) {
 3825:         @sections = ('none');
 3826:         if ($group_display) {
 3827:             $common_header = &mt('Assign Common Grade to Students in no Section and in Group(s) [_1]',$group_display);
 3828:             $specific_header = &mt('Assign Grade to Specific Students in no Section and in Group(s)',$group_display);
 3829:         } elsif (grep(/^none$/,@groups)) {
 3830:             $common_header = &mt('Assign Common Grade to Students in no Section and in no Group');
 3831:             $specific_header = &mt('Assign Grade to Specific Students in no Section and in no Group');
 3832:         } else {
 3833:             $common_header = &mt('Assign Common Grade to Students in no Section');
 3834: 	    $specific_header = &mt('Assign Grade to Specific Students in no Section');
 3835:         }
 3836:     } else {
 3837:         $section_display = join (", ",@sections);
 3838:         if ($group_display) {
 3839:             $common_header = &mt('Assign Common Grade to Students in Section(s) [_1], and in Group(s) [_2]',
 3840:                                  $section_display,$group_display);
 3841:             $specific_header = &mt('Assign Grade to Specific Students in Section(s) [_1], and in Group(s) [_2]',
 3842:                                    $section_display,$group_display);
 3843:         } elsif (grep(/^none$/,@groups)) {
 3844:             $common_header = &mt('Assign Common Grade to Students in Section(s) [_1] and no Group',$section_display);
 3845:             $specific_header = &mt('Assign Grade to Specific Students in Section(s) [_1] and no Group',$section_display);
 3846:         } else {
 3847:             $common_header = &mt('Assign Common Grade to Students in Section(s) [_1]',$section_display);
 3848: 	    $specific_header = &mt('Assign Grade to Specific Students in Section(s) [_1]',$section_display);
 3849:         }
 3850:     }
 3851:     my %submit_types = &substatus_options();
 3852:     my $submission_status = $submit_types{$env{'form.submitonly'}};
 3853: 
 3854:     if ($env{'form.submitonly'} eq 'all') {
 3855:         $result.= '<h3>'.$common_header.'</h3>';
 3856:     } else {
 3857:         my $text;
 3858:         if ($is_tool) {
 3859:             $text = &mt('(transaction status: "[_1]")',$submission_status);
 3860:         } else {
 3861:             $text = &mt('(submission status: "[_1]")',$submission_status);
 3862:         }
 3863:         $result.= '<h3>'.$common_header.'&nbsp;'.$text.'</h3>';
 3864:     }
 3865:     $result .= &Apache::loncommon::start_data_table();
 3866:     #radio buttons/text box for assigning points for a section or class.
 3867:     #handles different parts of a problem
 3868:     my $res_error;
 3869:     my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
 3870:     if ($res_error) {
 3871:         return &navmap_errormsg();
 3872:     }
 3873:     my %weight = ();
 3874:     my $ctsparts = 0;
 3875:     my %seen = ();
 3876:     my @part_response_id;
 3877:     if ($is_tool) {
 3878:         @part_response_id = ([0,'']);
 3879:     } else {
 3880:         @part_response_id = &flatten_responseType($responseType);
 3881:     }
 3882:     foreach my $part_response_id (@part_response_id) {
 3883:     	my ($partid,$respid) = @{ $part_response_id };
 3884: 	my $part_resp = join('_',@{ $part_response_id });
 3885: 	next if $seen{$partid};
 3886: 	$seen{$partid}++;
 3887: #	my $handgrade=$$handgrade{$part_resp};
 3888: 	my $wgt = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb);
 3889: 	$weight{$partid} = $wgt eq '' ? '1' : $wgt;
 3890: 
 3891: 	my $display_part=&get_display_part($partid,$symb);
 3892: 	my $radio.='<table border="0"><tr>';  
 3893: 	my $ctr = 0;
 3894: 	while ($ctr<=$weight{$partid}) { # display radio buttons in a nice table 10 across
 3895: 	    $radio.= '<td><label><input type="radio" name="RADVAL_'.$partid.'" '.
 3896: 		'onclick="javascript:writePoint(\''.$partid.'\','.$weight{$partid}.
 3897: 		','.$ctr.')" />'.$ctr."</label></td>\n";
 3898: 	    $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
 3899: 	    $ctr++;
 3900: 	}
 3901: 	$radio.='</tr></table>';
 3902: 	my $line = '<input type="text" name="TEXTVAL_'.
 3903: 	    $partid.'" size="4" '.'onchange="javascript:writePoint(\''.
 3904: 		$partid.'\','.$weight{$partid}.',\'textval\')" /> /'.
 3905: 	    $weight{$partid}.' '.&mt('(problem weight)').'</td>'."\n";
 3906:         $line.= '<td><b>'.&mt('Grade Status').':</b>'.
 3907:             '<select name="SELVAL_'.$partid.'" '.
 3908:             'onchange="javascript:writeRadText(\''.$partid.'\','.
 3909:                 $weight{$partid}.')"> '.
 3910: 	    '<option selected="selected"> </option>'.
 3911: 	    '<option value="excused">'.&mt('excused').'</option>'.
 3912: 	    '<option value="reset status">'.&mt('reset status').'</option>'.
 3913: 	    '</select></td>'.
 3914:             '<td><label><input type="checkbox" name="FORCE_'.$partid.'" />'.&mt('Override "Correct"').'</label>';
 3915: 	$line.='<input type="hidden" name="partid_'.
 3916: 	    $ctsparts.'" value="'.$partid.'" />'."\n";
 3917: 	$line.='<input type="hidden" name="weight_'.
 3918: 	    $partid.'" value="'.$weight{$partid}.'" />'."\n";
 3919: 
 3920: 	$result.=
 3921: 	    &Apache::loncommon::start_data_table_row()."\n".
 3922: 	    '<td><b>'.&mt('Part:').'</b></td><td>'.$display_part.'</td><td><b>'.&mt('Points:').'</b></td><td>'.$radio.'</td><td>'.&mt('or').'</td><td>'.$line.'</td>'.
 3923: 	    &Apache::loncommon::end_data_table_row()."\n";
 3924: 	$ctsparts++;
 3925:     }
 3926:     $result.=&Apache::loncommon::end_data_table()."\n".
 3927: 	'<input type="hidden" name="totalparts" value="'.$ctsparts.'" />';
 3928:     $result.='<input type="button" value="'.&mt('Revert to Default').'" '.
 3929: 	'onclick="javascript:resetEntry('.$ctsparts.');" />';
 3930: 
 3931:     #table listing all the students in a section/class
 3932:     #header of table
 3933:     if ($env{'form.submitonly'} eq 'all') {
 3934:         $result.= '<h3>'.$specific_header.'</h3>';
 3935:     } else {
 3936:         my $text;
 3937:         if ($is_tool) {
 3938:             $text = &mt('(transaction status: "[_1]")',$submission_status);
 3939:         } else {
 3940:             $text = &mt('(submission status: "[_1]")',$submission_status);
 3941:         }
 3942:         $result.= '<h3>'.$specific_header.'&nbsp;'.$text.'</h3>';
 3943:     }
 3944:     $result.= &Apache::loncommon::start_data_table().
 3945: 	      &Apache::loncommon::start_data_table_header_row().
 3946: 	      '<th>'.&mt('No.').'</th>'.
 3947: 	      '<th>'.&nameUserString('header')."</th>\n";
 3948:     my $partserror;
 3949:     my (@parts) = sort(&getpartlist($symb,\$partserror));
 3950:     if ($partserror) {
 3951:         return &navmap_errormsg();
 3952:     }
 3953:     my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
 3954:     my @partids = ();
 3955:     foreach my $part (@parts) {
 3956: 	my $display=&Apache::lonnet::metadata($url,$part.'.display',$toolsymb);
 3957:         my $narrowtext = &mt('Tries');
 3958: 	$display =~ s|^Number of Attempts|$narrowtext <br />|; # makes the column narrower
 3959: 	if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name',$toolsymb); }
 3960: 	my ($partid) = &split_part_type($part);
 3961:         push(@partids,$partid);
 3962: #
 3963: # FIXME: Looks like $display looks at English text
 3964: #
 3965: 	my $display_part=&get_display_part($partid,$symb);
 3966: 	if ($display =~ /^Partial Credit Factor/) {
 3967: 	    $result.='<th>'.
 3968: 		&mt('Score Part: [_1][_2](weight = [_3])',
 3969: 		    $display_part,'<br />',$weight{$partid}).'</th>'."\n";
 3970: 	    next;
 3971: 	    
 3972: 	} else {
 3973: 	    if ($display =~ /Problem Status/) {
 3974: 		my $grade_status_mt = &mt('Grade Status');
 3975: 		$display =~ s{Problem Status}{$grade_status_mt<br />};
 3976: 	    }
 3977: 	    my $part_mt = &mt('Part:');
 3978: 	    $display =~s{\[Part: \Q$partid\E\]}{$part_mt $display_part};
 3979: 	}
 3980: 
 3981: 	$result.='<th>'.$display.'</th>'."\n";
 3982:     }
 3983:     $result.=&Apache::loncommon::end_data_table_header_row();
 3984: 
 3985:     my %last_resets = 
 3986: 	&get_last_resets($symb,$env{'request.course.id'},\@partids);
 3987: 
 3988:     #get info for each student
 3989:     #list all the students - with points and grade status
 3990:     my (undef,undef,$fullname) = &getclasslist(\@sections,'1',\@groups);
 3991:     my $ctr = 0;
 3992:     foreach (sort 
 3993: 	     {
 3994: 		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
 3995: 		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
 3996: 		 }
 3997: 		 return $a cmp $b;
 3998: 	     } (keys(%$fullname))) {
 3999: 	$result.=&viewstudentgrade($symb,$env{'request.course.id'},
 4000: 				   $_,$$fullname{$_},\@parts,\%weight,\$ctr,\%last_resets,$is_tool);
 4001:     }
 4002:     $result.=&Apache::loncommon::end_data_table();
 4003:     $result.='<input type="hidden" name="total" value="'.$ctr.'" />'."\n";
 4004:     $result.='<input type="button" value="'.&mt('Save').'" '.
 4005: 	'onclick="javascript:submit();" target="_self" /></form>'."\n";
 4006:     if ($ctr == 0) {
 4007:         my $stu_status = join(' or ',&Apache::loncommon::get_env_multiple('form.Status'));
 4008:         $result='<h3><span class="LC_info">'.&mt('Manual Grading').'</span></h3>'.
 4009:                 '<span class="LC_warning">';
 4010:         if ($env{'form.submitonly'} eq 'all') {
 4011:             if (grep(/^all$/,@sections)) {
 4012:                 if (grep(/^all$/,@groups)) {
 4013:                     $result .= &mt('There are no students with enrollment status [_1] to modify or grade.',
 4014:                                    $stu_status);
 4015:                 } elsif (grep(/^none$/,@groups)) {
 4016:                     $result .= &mt('There are no students with no group assigned and with enrollment status [_1] to modify or grade.',
 4017:                                    $stu_status); 
 4018:                 } else {
 4019:                     $result .= &mt('There are no students in group(s) [_1] with enrollment status [_2] to modify or grade.',
 4020:                                    $group_display,$stu_status);
 4021:                 }
 4022:             } elsif (grep(/^none$/,@sections)) {
 4023:                 if (grep(/^all$/,@groups)) {
 4024:                     $result .= &mt('There are no students in no section with enrollment status [_1] to modify or grade.',
 4025:                                    $stu_status);
 4026:                 } elsif (grep(/^none$/,@groups)) {
 4027:                     $result .= &mt('There are no students in no section and no group with enrollment status [_1] to modify or grade.',
 4028:                                    $stu_status);
 4029:                 } else {
 4030:                     $result .= &mt('There are no students in no section in group(s) [_1] with enrollment status [_2] to modify or grade.',
 4031:                                    $group_display,$stu_status);
 4032:                 }
 4033:             } else {
 4034:                 if (grep(/^all$/,@groups)) {
 4035:                     $result .= &mt('There are no students in section(s) [_1] with enrollment status [_2] to modify or grade.',
 4036:                                    $section_display,$stu_status);
 4037:                 } elsif (grep(/^none$/,@groups)) {
 4038:                     $result .= &mt('There are no students in section(s) [_1] and no group with enrollment status [_2] to modify or grade.',
 4039:                                    $section_display,$stu_status);
 4040:                 } else {
 4041:                     $result .= &mt('There are no students in section(s) [_1] and group(s) [_2] with enrollment status [_3] to modify or grade.',
 4042:                                    $section_display,$group_display,$stu_status);
 4043:                 }
 4044:             }
 4045:         } else {
 4046:             if (grep(/^all$/,@sections)) {
 4047:                 if (grep(/^all$/,@groups)) {
 4048:                     $result .= &mt('There are no students with enrollment status [_1] and submission status "[_2]" to modify or grade.',
 4049:                                    $stu_status,$submission_status);
 4050:                 } elsif (grep(/^none$/,@groups)) {
 4051:                     $result .= &mt('There are no students with no group assigned with enrollment status [_1] and submission status "[_2]" to modify or grade.',
 4052:                                    $stu_status,$submission_status);
 4053:                 } else {
 4054:                     $result .= &mt('There are no students in group(s) [_1] with enrollment status [_2] and submission status "[_3]" to modify or grade.',
 4055:                                    $group_display,$stu_status,$submission_status);
 4056:                 }
 4057:             } elsif (grep(/^none$/,@sections)) {
 4058:                 if (grep(/^all$/,@groups)) {
 4059:                     $result .= &mt('There are no students in no section with enrollment status [_1] and submission status "[_2]" to modify or grade.',
 4060:                                    $stu_status,$submission_status);
 4061:                 } elsif (grep(/^none$/,@groups)) {
 4062:                     $result .= &mt('There are no students in no section and no group with enrollment status [_1] and submission status "[_2]" to modify or grade.',
 4063:                                    $stu_status,$submission_status);
 4064:                 } else {
 4065:                     $result .= &mt('There are no students in no section in group(s) [_1] with enrollment status [_2] and submission status "[_3]" to modify or grade.',
 4066:                                    $group_display,$stu_status,$submission_status);
 4067:                 }
 4068:             } else {
 4069:                 if (grep(/^all$/,@groups)) {
 4070: 	            $result .= &mt('There are no students in section(s) [_1] with enrollment status [_2] and submission status "[_3]" to modify or grade.',
 4071: 	                           $section_display,$stu_status,$submission_status);
 4072:                 } elsif (grep(/^none$/,@groups)) {
 4073:                     $result .= &mt('There are no students in section(s) [_1] and no group with enrollment status [_2] and submission status "[_3]" to modify or grade.',
 4074:                                    $section_display,$stu_status,$submission_status);
 4075:                 } else {
 4076:                     $result .= &mt('There are no students in section(s) [_1] and group(s) [_2] with enrollment status [_3] and submission status "[_4]" to modify or grade.',
 4077:                                    $section_display,$group_display,$stu_status,$submission_status);
 4078:                 }
 4079:             }
 4080:         }
 4081: 	$result .= '</span><br />';
 4082:     }
 4083:     return $result;
 4084: }
 4085: 
 4086: #--- call by previous routine to display each student who satisfies submission filter. 
 4087: sub viewstudentgrade {
 4088:     my ($symb,$courseid,$student,$fullname,$parts,$weight,$ctr,$last_resets,$is_tool) = @_;
 4089:     my ($uname,$udom) = split(/:/,$student);
 4090:     my %record=&Apache::lonnet::restore($symb,$courseid,$udom,$uname);
 4091:     my $submitonly = $env{'form.submitonly'};
 4092:     unless (($submitonly eq 'all') || ($submitonly eq 'queued')) {
 4093:         my %partstatus = ();
 4094:         if (ref($parts) eq 'ARRAY') {
 4095:             foreach my $apart (@{$parts}) {
 4096:                 my ($part,$type) = &split_part_type($apart);
 4097:                 my ($status,undef) = split(/_/,$record{"resource.$part.solved"},2);
 4098:                 $status = 'nothing' if ($status eq '');
 4099:                 $partstatus{$part}      = $status;
 4100:                 my $subkey = "resource.$part.submitted_by";
 4101:                 $partstatus{$subkey} = $record{$subkey} if ($record{$subkey} ne '');
 4102:             }
 4103:             my $submitted = 0;
 4104:             my $graded = 0;
 4105:             my $incorrect = 0;
 4106:             foreach my $key (keys(%partstatus)) {
 4107:                 $submitted = 1 if ($partstatus{$key} ne 'nothing');
 4108:                 $graded = 1 if ($partstatus{$key} =~ /^ungraded/);
 4109:                 $incorrect = 1 if ($partstatus{$key} =~ /^incorrect/);
 4110: 
 4111:                 my $partid = (split(/\./,$key))[1];
 4112:                 if ($partstatus{'resource.'.$partid.'.'.$key.'.submitted_by'} ne '') {
 4113:                     $submitted = 0;
 4114:                 }
 4115:             }
 4116:             return if (!$submitted && ($submitonly eq 'yes' ||
 4117:                                        $submitonly eq 'incorrect' ||
 4118:                                        $submitonly eq 'graded'));
 4119:             return if (!$graded && ($submitonly eq 'graded'));
 4120:             return if (!$incorrect && $submitonly eq 'incorrect');
 4121:         }
 4122:     }
 4123:     if ($submitonly eq 'queued') {
 4124:         my ($cdom,$cnum) = split(/_/,$courseid);
 4125:         my %queue_status =
 4126:             &Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
 4127:                                                     $udom,$uname);
 4128:         return if (!defined($queue_status{'gradingqueue'}));
 4129:     }
 4130:     $$ctr++;
 4131:     my %aggregates = ();
 4132:     my $result=&Apache::loncommon::start_data_table_row().'<td align="right">'.
 4133: 	'<input type="hidden" name="ctr'.($$ctr-1).'" value="'.$student.'" />'.
 4134: 	"\n".$$ctr.'&nbsp;</td><td>&nbsp;'.
 4135: 	'<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
 4136: 	'\');" target="_self">'.$fullname.'</a> '.
 4137: 	'<span class="LC_internal_info">('.$uname.($env{'user.domain'} eq $udom ? '' : ':'.$udom).')</span></td>'."\n";
 4138:     $student=~s/:/_/; # colon doen't work in javascript for names
 4139:     foreach my $apart (@$parts) {
 4140: 	my ($part,$type) = &split_part_type($apart);
 4141: 	my $score=$record{"resource.$part.$type"};
 4142:         $result.='<td align="center">';
 4143:         my ($aggtries,$totaltries);
 4144:         unless (exists($aggregates{$part})) {
 4145: 	    $totaltries = $record{'resource.'.$part.'.tries'};
 4146: 	    $aggtries = $totaltries;
 4147:             if ($$last_resets{$part}) {  
 4148:                 $aggtries = &get_num_tries(\%record,$$last_resets{$part},
 4149: 					   $part);
 4150:             }
 4151:             $result.='<input type="hidden" name="'.
 4152:                 'GD_'.$student.'_'.$part.'_aggtries" value="'.$aggtries.'" />'."\n";
 4153:             $result.='<input type="hidden" name="'.
 4154:                 'GD_'.$student.'_'.$part.'_totaltries" value="'.$totaltries.'" />'."\n";
 4155:             $aggregates{$part} = 1;
 4156:         }
 4157: 	if ($type eq 'awarded') {
 4158: 	    my $pts = $score eq '' ? '' : &compute_points($score,$$weight{$part});
 4159: 	    $result.='<input type="hidden" name="'.
 4160: 		'GD_'.$student.'_'.$part.'_awarded_s" value="'.$pts.'" />'."\n";
 4161: 	    $result.='<input type="text" name="'.
 4162: 		'GD_'.$student.'_'.$part.'_awarded" '.
 4163:                 'onchange="javascript:changeSelect(\''.$part.'\',\''.$student.
 4164: 		'\')" value="'.$pts.'" size="4" /></td>'."\n";
 4165: 	} elsif ($type eq 'solved') {
 4166: 	    my ($status,$foo)=split(/_/,$score,2);
 4167: 	    $status = 'nothing' if ($status eq '');
 4168: 	    $result.='<input type="hidden" name="'.'GD_'.$student.'_'.
 4169: 		$part.'_solved_s" value="'.$status.'" />'."\n";
 4170: 	    $result.='&nbsp;<select name="'.
 4171: 		'GD_'.$student.'_'.$part.'_solved" '.
 4172:                 'onchange="javascript:changeOneScore(\''.$part.'\',\''.$student.'\')" >'."\n";
 4173: 	    $result.= (($status eq 'excused') ? '<option> </option><option selected="selected" value="excused">'.&mt('excused').'</option>' 
 4174: 		: '<option selected="selected"> </option><option value="excused">'.&mt('excused').'</option>')."\n";
 4175: 	    $result.='<option value="reset status">'.&mt('reset status').'</option>';
 4176: 	    $result.="</select>&nbsp;</td>\n";
 4177: 	} else {
 4178: 	    $result.='<input type="hidden" name="'.
 4179: 		'GD_'.$student.'_'.$part.'_'.$type.'_s" value="'.$score.'" />'.
 4180: 		    "\n";
 4181: 	    $result.='<input type="text" name="'.
 4182: 		'GD_'.$student.'_'.$part.'_'.$type.'" '.
 4183: 		'value="'.$score.'" size="4" /></td>'."\n";
 4184: 	}
 4185:     }
 4186:     $result.=&Apache::loncommon::end_data_table_row();
 4187:     return $result;
 4188: }
 4189: 
 4190: #--- change scores for all the students in a section/class
 4191: #    record does not get update if unchanged
 4192: sub editgrades {
 4193:     my ($request,$symb) = @_;
 4194:     my $toolsymb;
 4195:     if ($symb =~ /ext\.tool$/) {
 4196:         $toolsymb = $symb;
 4197:     }
 4198: 
 4199:     my $section_display = join (", ",&Apache::loncommon::get_env_multiple('form.section'));
 4200:     my $title='<h2>'.&mt('Current Grade Status').'</h2>';
 4201:     $title.='<h4>'.&mt('<b>Section: </b>[_1]',$section_display).'</h4>'."\n";
 4202: 
 4203:     my $result= &Apache::loncommon::start_data_table().
 4204: 	&Apache::loncommon::start_data_table_header_row().
 4205: 	'<th rowspan="2" valign="middle">'.&mt('No.').'</th>'.
 4206: 	'<th rowspan="2" valign="middle">'.&nameUserString('header')."</th>\n";
 4207:     my %scoreptr = (
 4208: 		    'correct'  =>'correct_by_override',
 4209: 		    'incorrect'=>'incorrect_by_override',
 4210: 		    'excused'  =>'excused',
 4211: 		    'ungraded' =>'ungraded_attempted',
 4212:                     'credited' =>'credit_attempted',
 4213: 		    'nothing'  => '',
 4214: 		    );
 4215:     my ($classlist,undef,$fullname) = &getclasslist($env{'form.section'},'0');
 4216: 
 4217:     my (@partid);
 4218:     my %weight = ();
 4219:     my %columns = ();
 4220:     my ($i,$ctr,$count,$rec_update) = (0,0,0,0);
 4221: 
 4222:     my $partserror;
 4223:     my (@parts) = sort(&getpartlist($symb,\$partserror));
 4224:     if ($partserror) {
 4225:         return &navmap_errormsg();
 4226:     }
 4227:     my $header;
 4228:     while ($ctr < $env{'form.totalparts'}) {
 4229: 	my $partid = $env{'form.partid_'.$ctr};
 4230: 	push(@partid,$partid);
 4231: 	$weight{$partid} = $env{'form.weight_'.$partid};
 4232: 	$ctr++;
 4233:     }
 4234:     my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
 4235:     my $totcolspan = 0;
 4236:     foreach my $partid (@partid) {
 4237: 	$header .= '<th align="center">'.&mt('Old Score').'</th>'.
 4238: 	    '<th align="center">'.&mt('New Score').'</th>';
 4239: 	$columns{$partid}=2;
 4240: 	foreach my $stores (@parts) {
 4241: 	    my ($part,$type) = &split_part_type($stores);
 4242: 	    if ($part !~ m/^\Q$partid\E/) { next;}
 4243: 	    if ($type eq 'awarded' || $type eq 'solved') { next; }
 4244: 	    my $display=&Apache::lonnet::metadata($url,$stores.'.display',$toolsymb);
 4245: 	    $display =~ s/\[Part: \Q$part\E\]//;
 4246:             my $narrowtext = &mt('Tries');
 4247: 	    $display =~ s/Number of Attempts/$narrowtext/;
 4248: 	    $header .= '<th align="center">'.&mt('Old').' '.$display.'</th>'.
 4249: 		'<th align="center">'.&mt('New').' '.$display.'</th>';
 4250: 	    $columns{$partid}+=2;
 4251: 	}
 4252:         $totcolspan += $columns{$partid};
 4253:     }
 4254:     foreach my $partid (@partid) {
 4255: 	my $display_part=&get_display_part($partid,$symb);
 4256: 	$result .= '<th colspan="'.$columns{$partid}.'" align="center">'.
 4257: 	    &mt('Part: [_1] (Weight = [_2])',$display_part,$weight{$partid}).
 4258: 	    '</th>';
 4259: 
 4260:     }
 4261:     $result .= &Apache::loncommon::end_data_table_header_row().
 4262: 	&Apache::loncommon::start_data_table_header_row().
 4263: 	$header.
 4264: 	&Apache::loncommon::end_data_table_header_row();
 4265:     my @noupdate;
 4266:     my ($updateCtr,$noupdateCtr) = (1,1);
 4267:     for ($i=0; $i<$env{'form.total'}; $i++) {
 4268: 	my $user = $env{'form.ctr'.$i};
 4269: 	my ($uname,$udom)=split(/:/,$user);
 4270: 	my %newrecord;
 4271: 	my $updateflag = 0;
 4272: 	my $usec=$classlist->{"$uname:$udom"}[5];
 4273: 	my $canmodify = &canmodify($usec);
 4274: 	my $line = '<td'.($canmodify?'':' colspan="2"').'>'.
 4275: 		   &nameUserString(undef,$$fullname{$user},$uname,$udom).'</td>';
 4276: 	if (!$canmodify) {
 4277: 	    push(@noupdate,
 4278: 		 $line."<td colspan=\"$totcolspan\"><span class=\"LC_warning\">".
 4279: 		 &mt('Not allowed to modify student')."</span></td>");
 4280: 	    next;
 4281: 	}
 4282:         my %aggregate = ();
 4283:         my $aggregateflag = 0;
 4284: 	$user=~s/:/_/; # colon doen't work in javascript for names
 4285: 	foreach (@partid) {
 4286: 	    my $old_aw    = $env{'form.GD_'.$user.'_'.$_.'_awarded_s'};
 4287: 	    my $old_part_pcr = $old_aw/($weight{$_} ne '0' ? $weight{$_}:1);
 4288: 	    my $old_part  = $old_aw eq '' ? '' : $old_part_pcr;
 4289: 	    my $old_score = $scoreptr{$env{'form.GD_'.$user.'_'.$_.'_solved_s'}};
 4290: 	    my $awarded   = $env{'form.GD_'.$user.'_'.$_.'_awarded'};
 4291: 	    my $pcr       = $awarded/($weight{$_} ne '0' ? $weight{$_} : 1);
 4292: 	    my $partial   = $awarded eq '' ? '' : $pcr;
 4293: 	    my $score;
 4294: 	    if ($partial eq '') {
 4295: 		$score = $scoreptr{$env{'form.GD_'.$user.'_'.$_.'_solved_s'}};
 4296: 	    } elsif ($partial > 0) {
 4297: 		$score = 'correct_by_override';
 4298: 	    } elsif ($partial == 0) {
 4299: 		$score = 'incorrect_by_override';
 4300: 	    }
 4301: 	    my $dropMenu = $env{'form.GD_'.$user.'_'.$_.'_solved'};
 4302: 	    $score = 'excused' if (($dropMenu eq 'excused') && ($score ne 'excused'));
 4303: 
 4304: 	    $newrecord{'resource.'.$_.'.regrader'}=
 4305: 		"$env{'user.name'}:$env{'user.domain'}";
 4306: 	    if ($dropMenu eq 'reset status' &&
 4307: 		$old_score ne '') { # ignore if no previous attempts => nothing to reset
 4308: 		$newrecord{'resource.'.$_.'.tries'} = '';
 4309: 		$newrecord{'resource.'.$_.'.solved'} = '';
 4310: 		$newrecord{'resource.'.$_.'.award'} = '';
 4311: 		$newrecord{'resource.'.$_.'.awarded'} = '';
 4312: 		$updateflag = 1;
 4313:                 if ($env{'form.GD_'.$user.'_'.$_.'_aggtries'} > 0) {
 4314:                     my $aggtries = $env{'form.GD_'.$user.'_'.$_.'_aggtries'};
 4315:                     my $totaltries = $env{'form.GD_'.$user.'_'.$_.'_totaltries'};
 4316:                     my $solvedstatus = $env{'form.GD_'.$user.'_'.$_.'_solved_s'};
 4317:                     &decrement_aggs($symb,$_,\%aggregate,$aggtries,$totaltries,$solvedstatus);
 4318:                     $aggregateflag = 1;
 4319:                 }
 4320: 	    } elsif (!($old_part eq $partial && $old_score eq $score)) {
 4321: 		$updateflag = 1;
 4322: 		$newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
 4323: 		$newrecord{'resource.'.$_.'.solved'}   = $score;
 4324: 		$rec_update++;
 4325: 	    }
 4326: 
 4327: 	    $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
 4328: 		'<td align="center">'.$awarded.
 4329: 		($score eq 'excused' ? $score : '').'&nbsp;</td>';
 4330: 
 4331: 
 4332: 	    my $partid=$_;
 4333: 	    foreach my $stores (@parts) {
 4334: 		my ($part,$type) = &split_part_type($stores);
 4335: 		if ($part !~ m/^\Q$partid\E/) { next;}
 4336: 		if ($type eq 'awarded' || $type eq 'solved') { next; }
 4337: 		my $old_aw    = $env{'form.GD_'.$user.'_'.$part.'_'.$type.'_s'};
 4338: 		my $awarded   = $env{'form.GD_'.$user.'_'.$part.'_'.$type};
 4339: 		if ($awarded ne '' && $awarded ne $old_aw) {
 4340: 		    $newrecord{'resource.'.$part.'.'.$type}= $awarded;
 4341: 		    $newrecord{'resource.'.$part.'.regrader'}="$env{'user.name'}:$env{'user.domain'}";
 4342: 		    $updateflag=1;
 4343: 		}
 4344: 		$line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
 4345: 		    '<td align="center">'.$awarded.'&nbsp;</td>';
 4346: 	    }
 4347: 	}
 4348: 	$line.="\n";
 4349: 
 4350: 	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 4351: 	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 4352: 
 4353: 	if ($updateflag) {
 4354: 	    $count++;
 4355: 	    &Apache::lonnet::cstore(\%newrecord,$symb,$env{'request.course.id'},
 4356: 				    $udom,$uname);
 4357: 
 4358: 	    if (&Apache::bridgetask::in_queue('gradingqueue',$symb,$cdom,
 4359: 					      $cnum,$udom,$uname)) {
 4360: 		# need to figure out if should be in queue.
 4361: 		my %record =  
 4362: 		    &Apache::lonnet::restore($symb,$env{'request.course.id'},
 4363: 					     $udom,$uname);
 4364: 		my $all_graded = 1;
 4365: 		my $none_graded = 1;
 4366: 		foreach my $part (@parts) {
 4367: 		    if ( $record{'resource.'.$part.'.awarded'} eq '' ) {
 4368: 			$all_graded = 0;
 4369: 		    } else {
 4370: 			$none_graded = 0;
 4371: 		    }
 4372: 		}
 4373: 
 4374: 		if ($all_graded || $none_graded) {
 4375: 		    &Apache::bridgetask::remove_from_queue('gradingqueue',
 4376: 							   $symb,$cdom,$cnum,
 4377: 							   $udom,$uname);
 4378: 		}
 4379: 	    }
 4380: 
 4381: 	    $result.=&Apache::loncommon::start_data_table_row().
 4382: 		'<td align="right">&nbsp;'.$updateCtr.'&nbsp;</td>'.$line.
 4383: 		&Apache::loncommon::end_data_table_row();
 4384: 	    $updateCtr++;
 4385: 	} else {
 4386: 	    push(@noupdate,
 4387: 		 '<td align="right">&nbsp;'.$noupdateCtr.'&nbsp;</td>'.$line);
 4388: 	    $noupdateCtr++;
 4389: 	}
 4390:         if ($aggregateflag) {
 4391:             &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
 4392: 				  $cdom,$cnum);
 4393:         }
 4394:     }
 4395:     if (@noupdate) {
 4396:         my $numcols=$totcolspan+2;
 4397: 	$result .= &Apache::loncommon::start_data_table_row('LC_empty_row').
 4398: 	    '<td align="center" colspan="'.$numcols.'">'.
 4399: 	    &mt('No Changes Occurred For the Students Below').
 4400: 	    '</td>'.
 4401: 	    &Apache::loncommon::end_data_table_row();
 4402: 	foreach my $line (@noupdate) {
 4403: 	    $result.=
 4404: 		&Apache::loncommon::start_data_table_row().
 4405: 		$line.
 4406: 		&Apache::loncommon::end_data_table_row();
 4407: 	}
 4408:     }
 4409:     $result .= &Apache::loncommon::end_data_table();
 4410:     my $msg = '<p><b>'.
 4411: 	&mt('Number of records updated = [_1] for [quant,_2,student].',
 4412: 	    $rec_update,$count).'</b><br />'.
 4413: 	'<b>'.&mt('Total number of students = [_1]',$env{'form.total'}).
 4414: 	'</b></p>';
 4415:     return $title.$msg.$result;
 4416: }
 4417: 
 4418: sub split_part_type {
 4419:     my ($partstr) = @_;
 4420:     my ($temp,@allparts)=split(/_/,$partstr);
 4421:     my $type=pop(@allparts);
 4422:     my $part=join('_',@allparts);
 4423:     return ($part,$type);
 4424: }
 4425: 
 4426: #------------- end of section for handling grading by section/class ---------
 4427: #
 4428: #----------------------------------------------------------------------------
 4429: 
 4430: 
 4431: #----------------------------------------------------------------------------
 4432: #
 4433: #-------------------------- Next few routines handles grading by csv upload
 4434: #
 4435: #--- Javascript to handle csv upload
 4436: sub csvupload_javascript_reverse_associate {
 4437:     my $error1=&mt('You need to specify the username, the student/employee ID, or the clicker ID');
 4438:     my $error2=&mt('You need to specify at least one grading field');
 4439:   &js_escape(\$error1);
 4440:   &js_escape(\$error2);
 4441:   return(<<ENDPICK);
 4442:   function verify(vf) {
 4443:     var foundsomething=0;
 4444:     var founduname=0;
 4445:     var foundID=0;
 4446:     var foundclicker=0;
 4447:     for (i=0;i<=vf.nfields.value;i++) {
 4448:       tw=eval('vf.f'+i+'.selectedIndex');
 4449:       if (i==0 && tw!=0) { foundID=1; }
 4450:       if (i==1 && tw!=0) { founduname=1; }
 4451:       if (i==2 && tw!=0) { foundclicker=1; }
 4452:       if (i!=0 && i!=1 && i!=2 && i!=3 && tw!=0) { foundsomething=1; }
 4453:     }
 4454:     if (founduname==0 && foundID==0 && foundclicker==0) {
 4455: 	alert('$error1');
 4456: 	return;
 4457:     }
 4458:     if (foundsomething==0) {
 4459: 	alert('$error2');
 4460: 	return;
 4461:     }
 4462:     vf.submit();
 4463:   }
 4464:   function flip(vf,tf) {
 4465:     var nw=eval('vf.f'+tf+'.selectedIndex');
 4466:     var i;
 4467:     for (i=0;i<=vf.nfields.value;i++) {
 4468:       //can not pick the same destination field for both name and domain
 4469:       if (((i ==0)||(i ==1)) && 
 4470:           ((tf==0)||(tf==1)) && 
 4471:           (i!=tf) &&
 4472:           (eval('vf.f'+i+'.selectedIndex')==nw)) {
 4473:         eval('vf.f'+i+'.selectedIndex=0;')
 4474:       }
 4475:     }
 4476:   }
 4477: ENDPICK
 4478: }
 4479: 
 4480: sub csvupload_javascript_forward_associate {
 4481:     my $error1=&mt('You need to specify the username, the student/employee ID, or the clicker ID');
 4482:     my $error2=&mt('You need to specify at least one grading field');
 4483:   &js_escape(\$error1);
 4484:   &js_escape(\$error2);
 4485:   return(<<ENDPICK);
 4486:   function verify(vf) {
 4487:     var foundsomething=0;
 4488:     var founduname=0;
 4489:     var foundID=0;
 4490:     var foundclicker=0;
 4491:     for (i=0;i<=vf.nfields.value;i++) {
 4492:       tw=eval('vf.f'+i+'.selectedIndex');
 4493:       if (tw==1) { foundID=1; }
 4494:       if (tw==2) { founduname=1; }
 4495:       if (tw==3) { foundclicker=1; }
 4496:       if (tw>4) { foundsomething=1; }
 4497:     }
 4498:     if (founduname==0 && foundID==0 && Æ’oundclicker==0) {
 4499: 	alert('$error1');
 4500: 	return;
 4501:     }
 4502:     if (foundsomething==0) {
 4503: 	alert('$error2');
 4504: 	return;
 4505:     }
 4506:     vf.submit();
 4507:   }
 4508:   function flip(vf,tf) {
 4509:     var nw=eval('vf.f'+tf+'.selectedIndex');
 4510:     var i;
 4511:     //can not pick the same destination field twice
 4512:     for (i=0;i<=vf.nfields.value;i++) {
 4513:       if ((i!=tf) && (eval('vf.f'+i+'.selectedIndex')==nw)) {
 4514:         eval('vf.f'+i+'.selectedIndex=0;')
 4515:       }
 4516:     }
 4517:   }
 4518: ENDPICK
 4519: }
 4520: 
 4521: sub csvuploadmap_header {
 4522:     my ($request,$symb,$datatoken,$distotal)= @_;
 4523:     my $javascript;
 4524:     if ($env{'form.upfile_associate'} eq 'reverse') {
 4525: 	$javascript=&csvupload_javascript_reverse_associate();
 4526:     } else {
 4527: 	$javascript=&csvupload_javascript_forward_associate();
 4528:     }
 4529: 
 4530:     $symb = &Apache::lonenc::check_encrypt($symb);
 4531:     $request->print('<form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">'.
 4532:                     &mt('Total number of records found in file: [_1]',$distotal).'<hr />'.
 4533:                     &mt('Associate entries from the uploaded file with as many fields as you can.'));
 4534:     my $reverse=&mt("Reverse Association");
 4535:     $request->print(<<ENDPICK);
 4536: <br />
 4537: <input type="button" value="$reverse" onclick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
 4538: <input type="hidden" name="associate"  value="" />
 4539: <input type="hidden" name="phase"      value="three" />
 4540: <input type="hidden" name="datatoken"  value="$datatoken" />
 4541: <input type="hidden" name="fileupload" value="$env{'form.fileupload'}" />
 4542: <input type="hidden" name="upfiletype" value="$env{'form.upfiletype'}" />
 4543: <input type="hidden" name="upfile_associate" 
 4544:                                        value="$env{'form.upfile_associate'}" />
 4545: <input type="hidden" name="symb"       value="$symb" />
 4546: <input type="hidden" name="command"    value="csvuploadoptions" />
 4547: <hr />
 4548: ENDPICK
 4549:     $request->print(&Apache::lonhtmlcommon::scripttag($javascript));
 4550:     return '';
 4551: 
 4552: }
 4553: 
 4554: sub csvupload_fields {
 4555:     my ($symb,$errorref) = @_;
 4556:     my $toolsymb;
 4557:     if ($symb =~ /ext\.tool$/) {
 4558:         $toolsymb = $symb;
 4559:     }
 4560:     my (@parts) = &getpartlist($symb,$errorref);
 4561:     if (ref($errorref)) {
 4562:         if ($$errorref) {
 4563:             return;
 4564:         }
 4565:     }
 4566: 
 4567:     my @fields=(['ID','Student/Employee ID'],
 4568: 		['username','Student Username'],
 4569: 		['clicker','Clicker ID'],
 4570: 		['domain','Student Domain']);
 4571:     my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
 4572:     foreach my $part (sort(@parts)) {
 4573: 	my @datum;
 4574: 	my $display=&Apache::lonnet::metadata($url,$part.'.display',$toolsymb);
 4575: 	my $name=$part;
 4576: 	if (!$display) { $display = $name; }
 4577: 	@datum=($name,$display);
 4578: 	if ($name=~/^stores_(.*)_awarded/) {
 4579: 	    push(@fields,['stores_'.$1.'_points',"Points [Part: $1]"]);
 4580: 	}
 4581: 	push(@fields,\@datum);
 4582:     }
 4583:     return (@fields);
 4584: }
 4585: 
 4586: sub csvuploadmap_footer {
 4587:     my ($request,$i,$keyfields) =@_;
 4588:     my $buttontext = &mt('Assign Grades');
 4589:     $request->print(<<ENDPICK);
 4590: </table>
 4591: <input type="hidden" name="nfields" value="$i" />
 4592: <input type="hidden" name="keyfields" value="$keyfields" />
 4593: <input type="button" onclick="javascript:verify(this.form)" value="$buttontext" /><br />
 4594: </form>
 4595: ENDPICK
 4596: }
 4597: 
 4598: sub checkforfile_js {
 4599:     my $alertmsg = &mt('Please use the browse button to select a file from your local directory.');
 4600:     &js_escape(\$alertmsg);
 4601:     my $result = &Apache::lonhtmlcommon::scripttag(<<CSVFORMJS);
 4602:     function checkUpload(formname) {
 4603: 	if (formname.upfile.value == "") {
 4604: 	    alert("$alertmsg");
 4605: 	    return false;
 4606: 	}
 4607: 	formname.submit();
 4608:     }
 4609: CSVFORMJS
 4610:     return $result;
 4611: }
 4612: 
 4613: sub upcsvScores_form {
 4614:     my ($request,$symb) = @_;
 4615:     if (!$symb) {return '';}
 4616:     my $result=&checkforfile_js();
 4617:     $result.=&Apache::loncommon::start_data_table().
 4618:              &Apache::loncommon::start_data_table_header_row().
 4619:              '<th>'.&mt('Specify a file containing the class scores for current resource.').'</th>'.
 4620:              &Apache::loncommon::end_data_table_header_row().
 4621:              &Apache::loncommon::start_data_table_row().'<td>';
 4622:     my $upload=&mt("Upload Scores");
 4623:     my $upfile_select=&Apache::loncommon::upfile_select_html();
 4624:     my $ignore=&mt('Ignore First Line');
 4625:     $symb = &Apache::lonenc::check_encrypt($symb);
 4626:     $result.=<<ENDUPFORM;
 4627: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
 4628: <input type="hidden" name="symb" value="$symb" />
 4629: <input type="hidden" name="command" value="csvuploadmap" />
 4630: $upfile_select
 4631: <br /><input type="button" onclick="javascript:checkUpload(this.form);" value="$upload" />
 4632: </form>
 4633: ENDUPFORM
 4634:     $result.=&Apache::loncommon::help_open_topic("Course_Convert_To_CSV",
 4635:                            &mt("How do I create a CSV file from a spreadsheet")).
 4636:              '</td>'.
 4637:             &Apache::loncommon::end_data_table_row().
 4638:             &Apache::loncommon::end_data_table();
 4639:     return $result;
 4640: }
 4641: 
 4642: 
 4643: sub csvuploadmap {
 4644:     my ($request,$symb)= @_;
 4645:     if (!$symb) {return '';}
 4646: 
 4647:     my $datatoken;
 4648:     if (!$env{'form.datatoken'}) {
 4649: 	$datatoken=&Apache::loncommon::upfile_store($request);
 4650:     } else {
 4651: 	$datatoken=&Apache::loncommon::valid_datatoken($env{'form.datatoken'});
 4652:         if ($datatoken ne '') {
 4653: 	    &Apache::loncommon::load_tmp_file($request,$datatoken);
 4654:         }
 4655:     }
 4656:     my @records=&Apache::loncommon::upfile_record_sep();
 4657:     &csvuploadmap_header($request,$symb,$datatoken,$#records+1);
 4658:     my ($i,$keyfields);
 4659:     if (@records) {
 4660:         my $fieldserror;
 4661: 	my @fields=&csvupload_fields($symb,\$fieldserror);
 4662:         if ($fieldserror) {
 4663:             $request->print(&navmap_errormsg());
 4664:             return;
 4665:         }
 4666: 	if ($env{'form.upfile_associate'} eq 'reverse') {	
 4667: 	    &Apache::loncommon::csv_print_samples($request,\@records);
 4668: 	    $i=&Apache::loncommon::csv_print_select_table($request,\@records,
 4669: 							  \@fields);
 4670: 	    foreach (@fields) { $keyfields.=$_->[0].','; }
 4671: 	    chop($keyfields);
 4672: 	} else {
 4673: 	    unshift(@fields,['none','']);
 4674: 	    $i=&Apache::loncommon::csv_samples_select_table($request,\@records,
 4675: 							    \@fields);
 4676:             foreach my $rec (@records) {
 4677:                 my %temp = &Apache::loncommon::record_sep($rec);
 4678:                 if (%temp) {
 4679:                     $keyfields=join(',',sort(keys(%temp)));
 4680:                     last;
 4681:                 }
 4682:             }
 4683: 	}
 4684:     }
 4685:     &csvuploadmap_footer($request,$i,$keyfields);
 4686: 
 4687:     return '';
 4688: }
 4689: 
 4690: sub csvuploadoptions {
 4691:     my ($request,$symb)= @_;
 4692:     my $overwrite=&mt('Overwrite any existing score');
 4693:     $request->print(<<ENDPICK);
 4694: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
 4695: <input type="hidden" name="command"    value="csvuploadassign" />
 4696: <p>
 4697: <label>
 4698:    <input type="checkbox" name="overwite_scores" checked="checked" />
 4699:    $overwrite
 4700: </label>
 4701: </p>
 4702: ENDPICK
 4703:     my %fields=&get_fields();
 4704:     if (!defined($fields{'domain'})) {
 4705: 	my $domform = &Apache::loncommon::select_dom_form($env{'request.role.domain'},'default_domain');
 4706: 	$request->print("\n<p>".&mt('Users are in domain: [_1]',$domform)."</p>\n");
 4707:     }
 4708:     foreach my $key (sort(keys(%env))) {
 4709: 	if ($key !~ /^form\.(.*)$/) { next; }
 4710: 	my $cleankey=$1;
 4711: 	if ($cleankey eq 'command') { next; }
 4712: 	$request->print('<input type="hidden" name="'.$cleankey.
 4713: 			'"  value="'.$env{$key}.'" />'."\n");
 4714:     }
 4715:     # FIXME do a check for any duplicated user ids...
 4716:     # FIXME do a check for any invalid user ids?...
 4717:     $request->print('<input type="submit" value="'.&mt('Assign Grades').'" /><br />
 4718: <hr /></form>'."\n");
 4719:     return '';
 4720: }
 4721: 
 4722: sub get_fields {
 4723:     my %fields;
 4724:     my @keyfields = split(/\,/,$env{'form.keyfields'});
 4725:     for (my $i=0; $i<=$env{'form.nfields'}; $i++) {
 4726: 	if ($env{'form.upfile_associate'} eq 'reverse') {
 4727: 	    if ($env{'form.f'.$i} ne 'none') {
 4728: 		$fields{$keyfields[$i]}=$env{'form.f'.$i};
 4729: 	    }
 4730: 	} else {
 4731: 	    if ($env{'form.f'.$i} ne 'none') {
 4732: 		$fields{$env{'form.f'.$i}}=$keyfields[$i];
 4733: 	    }
 4734: 	}
 4735:     }
 4736:     return %fields;
 4737: }
 4738: 
 4739: sub csvuploadassign {
 4740:     my ($request,$symb) = @_;
 4741:     if (!$symb) {return '';}
 4742:     my $error_msg = '';
 4743:     my $datatoken = &Apache::loncommon::valid_datatoken($env{'form.datatoken'});
 4744:     if ($datatoken ne '') { 
 4745:         &Apache::loncommon::load_tmp_file($request,$datatoken);
 4746:     }
 4747:     my @gradedata = &Apache::loncommon::upfile_record_sep();
 4748:     my %fields=&get_fields();
 4749:     my $courseid=$env{'request.course.id'};
 4750:     my ($classlist) = &getclasslist('all',0);
 4751:     my @notallowed;
 4752:     my @skipped;
 4753:     my @warnings;
 4754:     my $countdone=0;
 4755:     foreach my $grade (@gradedata) {
 4756: 	my %entries=&Apache::loncommon::record_sep($grade);
 4757: 	my $domain;
 4758: 	if ($entries{$fields{'domain'}}) {
 4759: 	    $domain=$entries{$fields{'domain'}};
 4760: 	} else {
 4761: 	    $domain=$env{'form.default_domain'};
 4762: 	}
 4763: 	$domain=~s/\s//g;
 4764: 	my $username=$entries{$fields{'username'}};
 4765: 	$username=~s/\s//g;
 4766: 	if (!$username) {
 4767: 	    my $id=$entries{$fields{'ID'}};
 4768: 	    $id=~s/\s//g;
 4769:             if ($id ne '') {
 4770: 	        my %ids=&Apache::lonnet::idget($domain,[$id]);
 4771: 	        $username=$ids{$id};
 4772:             } else {
 4773:                 if ($entries{$fields{'clicker'}}) {
 4774:                     my $clicker = $entries{$fields{'clicker'}};
 4775:                     $clicker=~s/\s//g;
 4776:                     if ($clicker ne '') {
 4777:                         my %clickers = &Apache::lonnet::idget($domain,[$clicker],'clickers');
 4778:                         if ($clickers{$clicker} ne '') {  
 4779:                             my $match = 0;
 4780:                             my @inclass;
 4781:                             foreach my $poss (split(/,/,$clickers{$clicker})) {
 4782:                                 if (exists($$classlist{"$poss:$domain"})) {
 4783:                                     $username = $poss;
 4784:                                     push(@inclass,$poss);
 4785:                                     $match ++;
 4786:                                     
 4787:                                 }
 4788:                             }
 4789:                             if ($match > 1) {
 4790:                                 undef($username); 
 4791:                                 $request->print('<p class="LC_warning">'.
 4792:                                                 &mt('Score not saved for clicker: [_1] (matched multiple usernames: [_2])',
 4793:                                                 $clicker,join(', ',@inclass)).'</p>');
 4794:                             }
 4795:                         }
 4796:                     }
 4797:                 }
 4798:             }
 4799: 	}
 4800: 	if (!exists($$classlist{"$username:$domain"})) {
 4801: 	    my $id=$entries{$fields{'ID'}};
 4802: 	    $id=~s/\s//g;
 4803:             my $clicker = $entries{$fields{'clicker'}};
 4804:             $clicker=~s/\s//g;
 4805:             if ($clicker) {
 4806:                 push(@skipped,"$clicker:$domain");
 4807: 	    } elsif ($id) {
 4808: 		push(@skipped,"$id:$domain");
 4809: 	    } else {
 4810: 		push(@skipped,"$username:$domain");
 4811: 	    }
 4812: 	    next;
 4813: 	}
 4814: 	my $usec=$classlist->{"$username:$domain"}[5];
 4815: 	if (!&canmodify($usec)) {
 4816: 	    push(@notallowed,"$username:$domain");
 4817: 	    next;
 4818: 	}
 4819: 	my %points;
 4820: 	my %grades;
 4821: 	foreach my $dest (keys(%fields)) {
 4822: 	    if ($dest eq 'ID' || $dest eq 'username' ||
 4823: 		$dest eq 'domain') { next; }
 4824: 	    if ($entries{$fields{$dest}} =~ /^\s*$/) { next; }
 4825: 	    if ($dest=~/stores_(.*)_points/) {
 4826: 		my $part=$1;
 4827: 		my $wgt =&Apache::lonnet::EXT('resource.'.$part.'.weight',
 4828: 					      $symb,$domain,$username);
 4829:                 if ($wgt) {
 4830:                     $entries{$fields{$dest}}=~s/\s//g;
 4831:                     my $pcr=$entries{$fields{$dest}} / $wgt;
 4832:                     my $award=($pcr == 0) ? 'incorrect_by_override'
 4833:                                           : 'correct_by_override';
 4834:                     if ($pcr>1) {
 4835:                        push(@warnings,&mt("[_1]: point value larger than weight","$username:$domain"));
 4836:                     }
 4837:                     $grades{"resource.$part.awarded"}=$pcr;
 4838:                     $grades{"resource.$part.solved"}=$award;
 4839:                     $points{$part}=1;
 4840:                 } else {
 4841:                     $error_msg = "<br />" .
 4842:                         &mt("Some point values were assigned"
 4843:                             ." for problems with a weight "
 4844:                             ."of zero. These values were "
 4845:                             ."ignored.");
 4846:                 }
 4847: 	    } else {
 4848: 		if ($dest=~/stores_(.*)_awarded/) { if ($points{$1}) {next;} }
 4849: 		if ($dest=~/stores_(.*)_solved/)  { if ($points{$1}) {next;} }
 4850: 		my $store_key=$dest;
 4851: 		$store_key=~s/^stores/resource/;
 4852: 		$store_key=~s/_/\./g;
 4853: 		$grades{$store_key}=$entries{$fields{$dest}};
 4854: 	    }
 4855: 	}
 4856: 	if (! %grades) {
 4857:            push(@skipped,&mt("[_1]: no data to save","$username:$domain")); 
 4858:         } else {
 4859: 	   $grades{"resource.regrader"}="$env{'user.name'}:$env{'user.domain'}";
 4860: 	   my $result=&Apache::lonnet::cstore(\%grades,$symb,
 4861: 					   $env{'request.course.id'},
 4862: 					   $domain,$username);
 4863: 	   if ($result eq 'ok') {
 4864: # Successfully stored
 4865: 	      $request->print('.');
 4866: # Remove from grading queue
 4867:               &Apache::bridgetask::remove_from_queue('gradingqueue',$symb,
 4868:                                              $env{'course.'.$env{'request.course.id'}.'.domain'},
 4869:                                              $env{'course.'.$env{'request.course.id'}.'.num'},
 4870:                                              $domain,$username);
 4871:               $countdone++;
 4872:            } else {
 4873: 	      $request->print("<p><span class=\"LC_error\">".
 4874:                               &mt("Failed to save data for student [_1]. Message when trying to save was: [_2]",
 4875:                                   "$username:$domain",$result)."</span></p>");
 4876: 	   }
 4877: 	   $request->rflush();
 4878:         }
 4879:     }
 4880:     $request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt("Saved scores for [quant,_1,student]",$countdone),$countdone==0));
 4881:     if (@warnings) {
 4882:         $request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt('Warnings generated for the following saved scores:'),1).'<br />');
 4883:         $request->print(join(', ',@warnings));
 4884:     }
 4885:     if (@skipped) {
 4886: 	$request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt('No scores stored for the following username(s):'),1).'<br />');
 4887:         $request->print(join(', ',@skipped));
 4888:     }
 4889:     if (@notallowed) {
 4890: 	$request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt('Modification of scores not allowed for the following username(s):'),1).'<br />');
 4891: 	$request->print(join(', ',@notallowed));
 4892:     }
 4893:     $request->print("<br />\n");
 4894:     return $error_msg;
 4895: }
 4896: #------------- end of section for handling csv file upload ---------
 4897: #
 4898: #-------------------------------------------------------------------
 4899: #
 4900: #-------------- Next few routines handle grading by page/sequence
 4901: #
 4902: #--- Select a page/sequence and a student to grade
 4903: sub pickStudentPage {
 4904:     my ($request,$symb) = @_;
 4905: 
 4906:     my $alertmsg = &mt('Please select the student you wish to grade.');
 4907:     &js_escape(\$alertmsg);
 4908:     $request->print(&Apache::lonhtmlcommon::scripttag(<<LISTJAVASCRIPT));
 4909: 
 4910: function checkPickOne(formname) {
 4911:     if (radioSelection(formname.student) == null) {
 4912: 	alert("$alertmsg");
 4913: 	return;
 4914:     }
 4915:     ptr = pullDownSelection(formname.selectpage);
 4916:     formname.page.value = formname["page"+ptr].value;
 4917:     formname.title.value = formname["title"+ptr].value;
 4918:     formname.submit();
 4919: }
 4920: 
 4921: LISTJAVASCRIPT
 4922:     &commonJSfunctions($request);
 4923: 
 4924:     my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
 4925:     my $cnum      = $env{"course.$env{'request.course.id'}.num"};
 4926:     my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
 4927:     my $getgroup  = $env{'form.group'} eq '' ? 'all' : $env{'form.group'};
 4928: 
 4929:     my $result='<h3><span class="LC_info">&nbsp;'.
 4930: 	&mt('Manual Grading by Page or Sequence').'</span></h3>';
 4931: 
 4932:     $result.='<form action="/adm/grades" method="post" name="displayPage">'."\n";
 4933:     my $map_error;
 4934:     my ($titles,$symbx) = &getSymbMap($map_error);
 4935:     if ($map_error) {
 4936:         $request->print(&navmap_errormsg());
 4937:         return; 
 4938:     }
 4939:     my ($curpage) =&Apache::lonnet::decode_symb($symb); 
 4940: #    my ($curpage,$mapId) =&Apache::lonnet::decode_symb($symb); 
 4941: #    my $type=($curpage =~ /\.(page|sequence)/);
 4942: 
 4943:     # Collection of hidden fields
 4944:     my $ctr=0;
 4945:     foreach (@$titles) {
 4946:         my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
 4947:         $result.='<input type="hidden" name="page'.$ctr.'" value="'.$$symbx{$_}.'" />'."\n";
 4948:         $result.='<input type="hidden" name="title'.$ctr.'" value="'.$showtitle.'" />'."\n";
 4949:         $ctr++;
 4950:     }
 4951:     $result.='<input type="hidden" name="page" />'."\n".
 4952:         '<input type="hidden" name="title" />'."\n";
 4953: 
 4954:     $result.=&build_section_inputs();
 4955:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
 4956:     $result.='<input type="hidden" name="Status"  value="'.$stu_status.'" />'."\n".
 4957: 	'<input type="hidden" name="command" value="displayPage" />'."\n".
 4958: 	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
 4959: 
 4960:     # Show grading options
 4961:     $result.=&Apache::lonhtmlcommon::start_pick_box();
 4962:     my $select = '<select name="selectpage">'."\n";
 4963:     $ctr=0;
 4964:     foreach (@$titles) {
 4965: 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
 4966: 	$select.='<option value="'.$ctr.'"'.
 4967: 	    ($$symbx{$_} =~ /$curpage$/ ? ' selected="selected"' : '').
 4968: 	    '>'.$showtitle.'</option>'."\n";
 4969: 	$ctr++;
 4970:     }
 4971:     $select.= '</select>';
 4972: 
 4973:     $result.=
 4974:         &Apache::lonhtmlcommon::row_title(&mt('Problems from'))
 4975:        .$select
 4976:        .&Apache::lonhtmlcommon::row_closure();
 4977: 
 4978:     $result.=
 4979:         &Apache::lonhtmlcommon::row_title(&mt('View Problem Text'))
 4980:        .'<label><input type="radio" name="vProb" value="no"'
 4981:            .' checked="checked" /> '.&mt('no').' </label>'."\n"
 4982:        .'<label><input type="radio" name="vProb" value="yes" />'
 4983:            .&mt('yes').'</label>'."\n"
 4984:        .&Apache::lonhtmlcommon::row_closure();
 4985: 
 4986:     $result.=
 4987:         &Apache::lonhtmlcommon::row_title(&mt('View Submissions'))
 4988:        .'<label><input type="radio" name="lastSub" value="none" /> '
 4989:            .&mt('none').' </label>'."\n"
 4990:        .'<label><input type="radio" name="lastSub" value="datesub"'
 4991:            .' checked="checked" /> '.&mt('all submissions').'</label>'."\n"
 4992:        .'<label><input type="radio" name="lastSub" value="all" /> '
 4993:            .&mt('all submissions with details').' </label>'
 4994:        .&Apache::lonhtmlcommon::row_closure();
 4995:     
 4996:     $result.=
 4997:         &Apache::lonhtmlcommon::row_title(&mt('Use CODE'))
 4998:        .'<input type="text" name="CODE" value="" />'
 4999:        .&Apache::lonhtmlcommon::row_closure(1)
 5000:        .&Apache::lonhtmlcommon::end_pick_box();
 5001: 
 5002:     # Show list of students to select for grading
 5003:     $result.='<br /><input type="button" '.
 5004:              'onclick="javascript:checkPickOne(this.form);" value="'.&mt('Next').' &rarr;" /><br />'."\n";
 5005: 
 5006:     $request->print($result);
 5007: 
 5008:     my $studentTable.='&nbsp;<b>'.&mt('Select a student you wish to grade and then click on the Next button.').'</b><br />'.
 5009: 	&Apache::loncommon::start_data_table().
 5010: 	&Apache::loncommon::start_data_table_header_row().
 5011: 	'<th align="right">&nbsp;'.&mt('No.').'</th>'.
 5012: 	'<th>'.&nameUserString('header').'</th>'.
 5013: 	'<th align="right">&nbsp;'.&mt('No.').'</th>'.
 5014: 	'<th>'.&nameUserString('header').'</th>'.
 5015: 	&Apache::loncommon::end_data_table_header_row();
 5016:  
 5017:     my (undef,undef,$fullname) = &getclasslist($getsec,'1',$getgroup);
 5018:     my $ptr = 1;
 5019:     foreach my $student (sort 
 5020: 			 {
 5021: 			     if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
 5022: 				 return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
 5023: 			     }
 5024: 			     return $a cmp $b;
 5025: 			 } (keys(%$fullname))) {
 5026: 	my ($uname,$udom) = split(/:/,$student);
 5027: 	$studentTable.=($ptr%2==1 ? &Apache::loncommon::start_data_table_row()
 5028:                                   : '</td>');
 5029: 	$studentTable.='<td align="right">'.$ptr.'&nbsp;</td>';
 5030: 	$studentTable.='<td>&nbsp;<label><input type="radio" name="student" value="'.$student.'" /> '
 5031: 	    .&nameUserString(undef,$$fullname{$student},$uname,$udom)."</label>\n";
 5032: 	$studentTable.=
 5033: 	    ($ptr%2 == 0 ? '</td>'.&Apache::loncommon::end_data_table_row() 
 5034:                          : '');
 5035: 	$ptr++;
 5036:     }
 5037:     if ($ptr%2 == 0) {
 5038: 	$studentTable.='</td><td>&nbsp;</td><td>&nbsp;</td>'.
 5039: 	    &Apache::loncommon::end_data_table_row();
 5040:     }
 5041:     $studentTable.=&Apache::loncommon::end_data_table()."\n";
 5042:     $studentTable.='<input type="button" '.
 5043:                    'onclick="javascript:checkPickOne(this.form);" value="'.&mt('Next').' &rarr;" /></form>'."\n";
 5044: 
 5045:     $request->print($studentTable);
 5046: 
 5047:     return '';
 5048: }
 5049: 
 5050: sub getSymbMap {
 5051:     my ($map_error) = @_;
 5052:     my $navmap = Apache::lonnavmaps::navmap->new();
 5053:     unless (ref($navmap)) {
 5054:         if (ref($map_error)) {
 5055:             $$map_error = 'navmap';
 5056:         }
 5057:         return;
 5058:     }
 5059:     my %symbx = ();
 5060:     my @titles = ();
 5061:     my $minder = 0;
 5062: 
 5063:     # Gather every sequence that has problems.
 5064:     my @sequences = $navmap->retrieveResources(undef, sub { shift->is_map(); },
 5065: 					       1,0,1);
 5066:     for my $sequence ($navmap->getById('0.0'), @sequences) {
 5067: 	if ($navmap->hasResource($sequence, sub { shift->is_gradable(); }, 0) ) {
 5068: 	    my $title = $minder.'.'.
 5069: 		&HTML::Entities::encode($sequence->compTitle(),'"\'&');
 5070: 	    push(@titles, $title); # minder in case two titles are identical
 5071: 	    $symbx{$title} = &HTML::Entities::encode($sequence->symb(),'"\'&');
 5072: 	    $minder++;
 5073: 	}
 5074:     }
 5075:     return \@titles,\%symbx;
 5076: }
 5077: 
 5078: #
 5079: #--- Displays a page/sequence w/wo problems, w/wo submissions
 5080: sub displayPage {
 5081:     my ($request,$symb) = @_;
 5082:     my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
 5083:     my $cnum      = $env{"course.$env{'request.course.id'}.num"};
 5084:     my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
 5085:     my $pageTitle = $env{'form.page'};
 5086:     my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
 5087:     my ($uname,$udom) = split(/:/,$env{'form.student'});
 5088:     my $usec=$classlist->{$env{'form.student'}}[5];
 5089: 
 5090:     #need to make sure we have the correct data for later EXT calls, 
 5091:     #thus invalidate the cache
 5092:     &Apache::lonnet::devalidatecourseresdata(
 5093:                  $env{'course.'.$env{'request.course.id'}.'.num'},
 5094:                  $env{'course.'.$env{'request.course.id'}.'.domain'});
 5095:     &Apache::lonnet::clear_EXT_cache_status();
 5096: 
 5097:     if (!&canview($usec)) {
 5098:         $request->print(
 5099:             '<span class="LC_warning">'.
 5100:             &mt('Unable to view requested student. ([_1])',
 5101:                     $env{'form.student'}).
 5102:             '</span>');
 5103:         return;
 5104:     }
 5105:     my $result='<h3><span class="LC_info">&nbsp;'.$env{'form.title'}.'</span></h3>';
 5106:     $result.='<h3>&nbsp;'.&mt('Student: [_1]',&nameUserString(undef,$$fullname{$env{'form.student'}},$uname,$udom)).
 5107: 	'</h3>'."\n";
 5108:     $env{'form.CODE'} = uc($env{'form.CODE'});
 5109:     if (&Apache::lonnet::validCODE(uc($env{'form.CODE'}))) {
 5110: 	$result.='<h3>&nbsp;'.&mt('CODE: [_1]',$env{'form.CODE'}).'</h3>'."\n";
 5111:     } else {
 5112: 	delete($env{'form.CODE'});
 5113:     }
 5114:     &sub_page_js($request);
 5115:     $request->print($result);
 5116: 
 5117:     my $navmap = Apache::lonnavmaps::navmap->new();
 5118:     unless (ref($navmap)) {
 5119:         $request->print(&navmap_errormsg());
 5120:         return;
 5121:     }
 5122:     my ($mapUrl, $id, $resUrl)=&Apache::lonnet::decode_symb($env{'form.page'});
 5123:     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
 5124:     if (!$map) {
 5125: 	$request->print('<span class="LC_warning">'.&mt('Unable to view requested sequence. ([_1])',$resUrl).'</span>');
 5126: 	return; 
 5127:     }
 5128:     my $iterator = $navmap->getIterator($map->map_start(),
 5129: 					$map->map_finish());
 5130: 
 5131:     my $studentTable='<form action="/adm/grades" method="post" name="gradePage">'."\n".
 5132: 	'<input type="hidden" name="command" value="gradeByPage" />'."\n".
 5133: 	'<input type="hidden" name="fullname" value="'.$$fullname{$env{'form.student'}}.'" />'."\n".
 5134: 	'<input type="hidden" name="student" value="'.$env{'form.student'}.'" />'."\n".
 5135: 	'<input type="hidden" name="page"    value="'.$pageTitle.'" />'."\n".
 5136: 	'<input type="hidden" name="title"   value="'.$env{'form.title'}.'" />'."\n".
 5137: 	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 5138: 	'<input type="hidden" name="overRideScore" value="no" />'."\n";
 5139: 
 5140:     if (defined($env{'form.CODE'})) {
 5141: 	$studentTable.=
 5142: 	    '<input type="hidden" name="CODE" value="'.$env{'form.CODE'}.'" />'."\n";
 5143:     }
 5144:     my $checkIcon = '<img alt="'.&mt('Check Mark').
 5145: 	'" src="'.&Apache::loncommon::lonhttpdurl($request->dir_config('lonIconsURL').'/check.gif').'" height="16" border="0" />';
 5146: 
 5147:     $studentTable.='&nbsp;<span class="LC_info">'.
 5148:         &mt('Problems graded correct by the computer are marked with a [_1] symbol.',$checkIcon).
 5149:         '</span>'."\n".
 5150: 	&Apache::loncommon::start_data_table().
 5151: 	&Apache::loncommon::start_data_table_header_row().
 5152: 	'<th>'.&mt('Prob.').'</th>'.
 5153: 	'<th>&nbsp;'.($env{'form.vProb'} eq 'no' ? &mt('Title') : &mt('Problem Text')).'/'.&mt('Grade').'</th>'.
 5154: 	&Apache::loncommon::end_data_table_header_row();
 5155: 
 5156:     &Apache::lonxml::clear_problem_counter();
 5157:     my ($depth,$question,$prob) = (1,1,1);
 5158:     $iterator->next(); # skip the first BEGIN_MAP
 5159:     my $curRes = $iterator->next(); # for "current resource"
 5160:     while ($depth > 0) {
 5161:         if($curRes == $iterator->BEGIN_MAP) { $depth++; }
 5162:         if($curRes == $iterator->END_MAP) { $depth--; }
 5163: 
 5164:         if (ref($curRes) && $curRes->is_gradable()) {
 5165: 	    my $parts = $curRes->parts();
 5166:             my $title = $curRes->compTitle();
 5167: 	    my $symbx = $curRes->symb();
 5168:             my $is_tool = ($symbx =~ /ext\.tool$/);
 5169: 	    $studentTable.=
 5170: 		&Apache::loncommon::start_data_table_row().
 5171: 		'<td align="center" valign="top" >'.$prob.
 5172: 		(scalar(@{$parts}) == 1 ? '' 
 5173: 		                        : '<br />('.&mt('[_1]parts',
 5174: 							scalar(@{$parts}).'&nbsp;').')'
 5175: 		 ).
 5176: 		 '</td>';
 5177: 	    $studentTable.='<td valign="top">';
 5178: 	    my %form = ('CODE' => $env{'form.CODE'},);
 5179:             if ($is_tool) {
 5180:                 $studentTable.='&nbsp;<b>'.$title.'</b><br />';
 5181:             } else {
 5182: 	        if ($env{'form.vProb'} eq 'yes' ) {
 5183: 		    $studentTable.=&show_problem($request,$symbx,$uname,$udom,1,
 5184: 					         undef,'both',\%form);
 5185: 	        } else {
 5186: 		    my $companswer = &Apache::loncommon::get_student_answers($symbx,$uname,$udom,$env{'request.course.id'},%form);
 5187: 		    $companswer =~ s|<form(.*?)>||g;
 5188: 		    $companswer =~ s|</form>||g;
 5189: #		    while ($companswer =~ /(<a href\=\"javascript:newWindow.*?Script Vars<\/a>)/s) { #<a href="javascript:newWindow</a>
 5190: #		        $companswer =~ s/$1/ /ms;
 5191: #		        $request->print('match='.$1."<br />\n");
 5192: #		    }
 5193: #		    $companswer =~ s|<table border=\"1\">|<table border=\"0\">|g;
 5194: 		    $studentTable.='&nbsp;<b>'.$title.'</b>&nbsp;<br />&nbsp;<b>'.&mt('Correct answer').':</b><br />'.$companswer;
 5195: 		}
 5196: 	    }
 5197: 
 5198: 	    my %record = &Apache::lonnet::restore($symbx,$env{'request.course.id'},$udom,$uname);
 5199: 
 5200: 	    if ($env{'form.lastSub'} eq 'datesub') {
 5201: 		if ($record{'version'} eq '') {
 5202:                     my $msg = &mt('No recorded submission for this problem.');
 5203:                     if ($is_tool) {
 5204:                         $msg = &mt('No recorded transactions for this external tool');
 5205:                     }
 5206: 		    $studentTable.='<br />&nbsp;<span class="LC_warning">'.$msg.'</span><br />';
 5207: 		} else {
 5208: 		    my %responseType = ();
 5209: 		    foreach my $partid (@{$parts}) {
 5210: 			my @responseIds =$curRes->responseIds($partid);
 5211: 			my @responseType =$curRes->responseType($partid);
 5212: 			my %responseIds;
 5213: 			for (my $i=0;$i<=$#responseIds;$i++) {
 5214: 			    $responseIds{$responseIds[$i]}=$responseType[$i];
 5215: 			}
 5216: 			$responseType{$partid} = \%responseIds;
 5217: 		    }
 5218: 		    $studentTable.= &displaySubByDates($symbx,\%record,$parts,\%responseType,$checkIcon,$uname,$udom);
 5219: 		}
 5220: 	    } elsif ($env{'form.lastSub'} eq 'all') {
 5221: 		my $last = ($env{'form.lastSub'} eq 'last' ? 'last' : '');
 5222:                 my $identifier = (&canmodify($usec)? $prob : ''); 
 5223: 		$studentTable.=&Apache::loncommon::get_previous_attempt($symbx,$uname,$udom,
 5224: 									$env{'request.course.id'},
 5225: 									'','.submission',undef,
 5226:                                                                         $usec,$identifier);
 5227:  
 5228: 	    }
 5229: 	    if (&canmodify($usec)) {
 5230:             $studentTable.=&gradeBox_start();
 5231: 		foreach my $partid (@{$parts}) {
 5232: 		    $studentTable.=&gradeBox($request,$symbx,$uname,$udom,$question,$partid,\%record);
 5233: 		    $studentTable.='<input type="hidden" name="q_'.$question.'" value="'.$partid.'" />'."\n";
 5234: 		    $question++;
 5235: 		}
 5236:             $studentTable.=&gradeBox_end();
 5237: 		$prob++;
 5238: 	    }
 5239: 	    $studentTable.='</td></tr>';
 5240: 
 5241: 	}
 5242:         $curRes = $iterator->next();
 5243:     }
 5244: 
 5245:     $studentTable.=
 5246:         '</table>'."\n".
 5247:         '<input type="button" value="'.&mt('Save').'" '.
 5248:         'onclick="javascript:checkSubmitPage(this.form,'.$question.');" />'.
 5249:         '</form>'."\n";
 5250:     $request->print($studentTable);
 5251: 
 5252:     return '';
 5253: }
 5254: 
 5255: sub displaySubByDates {
 5256:     my ($symb,$record,$parts,$responseType,$checkIcon,$uname,$udom) = @_;
 5257:     my $isCODE=0;
 5258:     my $isTask = ($symb =~/\.task$/);
 5259:     my $is_tool = ($symb =~/\.tool$/);
 5260:     if (exists($record->{'resource.CODE'})) { $isCODE=1; }
 5261:     my $studentTable=&Apache::loncommon::start_data_table().
 5262: 	&Apache::loncommon::start_data_table_header_row().
 5263: 	'<th>'.&mt('Date/Time').'</th>'.
 5264: 	($isCODE?'<th>'.&mt('CODE').'</th>':'').
 5265:         ($isTask?'<th>'.&mt('Version').'</th>':'').
 5266: 	'<th>'.($is_tool?&mt('Grade'):&mt('Submission')).'</th>'.
 5267: 	'<th>'.&mt('Status').'</th>'.
 5268: 	&Apache::loncommon::end_data_table_header_row();
 5269:     my ($version);
 5270:     my %mark;
 5271:     my %orders;
 5272:     $mark{'correct_by_student'} = $checkIcon;
 5273:     if (!exists($$record{'1:timestamp'})) {
 5274:         if ($is_tool) {
 5275:             return '<br />&nbsp;<span class="LC_warning">'.&mt('No grade passed back.').'</span><br />';
 5276:         } else {
 5277:             return '<br />&nbsp;<span class="LC_warning">'.&mt('Nothing submitted - no attempts.').'</span><br />';
 5278:         }
 5279:     }
 5280: 
 5281:     my $interaction;
 5282:     my $no_increment = 1;
 5283:     my (%lastrndseed,%lasttype);
 5284:     for ($version=1;$version<=$$record{'version'};$version++) {
 5285: 	my $timestamp = 
 5286: 	    &Apache::lonlocal::locallocaltime($$record{$version.':timestamp'});
 5287: 	if (exists($$record{$version.':resource.0.version'})) {
 5288: 	    $interaction = $$record{$version.':resource.0.version'};
 5289: 	}
 5290:         if ($isTask && $env{'form.previousversion'}) {
 5291:             next unless ($interaction == $env{'form.previousversion'});
 5292:         }
 5293: 	my $where = ($isTask ? "$version:resource.$interaction"
 5294: 		             : "$version:resource");
 5295: 	$studentTable.=&Apache::loncommon::start_data_table_row().
 5296: 	    '<td>'.$timestamp.'</td>';
 5297: 	if ($isCODE) {
 5298: 	    $studentTable.='<td>'.$record->{$version.':resource.CODE'}.'</td>';
 5299: 	}
 5300:         if ($isTask) {
 5301:             $studentTable.='<td>'.$interaction.'</td>';
 5302:         }
 5303: 	my @versionKeys = split(/\:/,$$record{$version.':keys'});
 5304: 	my @displaySub = ();
 5305: 	foreach my $partid (@{$parts}) {
 5306:             my ($hidden,$type);
 5307:             $type = $$record{$version.':resource.'.$partid.'.type'};
 5308:             if (($type eq 'anonsurvey') || ($type eq 'anonsurveycred')) {
 5309:                 $hidden = 1;
 5310:             }
 5311:             my @matchKey;
 5312:             if ($isTask) {
 5313:                 @matchKey = sort(grep /^resource\.\d+\.\Q$partid\E\.award$/,@versionKeys);
 5314:             } elsif ($is_tool) {
 5315:                 @matchKey = sort(grep /^resource\.\Q$partid\E\.awarded$/,@versionKeys);
 5316:             } else {
 5317:                 @matchKey = sort(grep /^resource\.\Q$partid\E\..*?\.submission$/,@versionKeys);
 5318:             }
 5319: #	    next if ($$record{"$version:resource.$partid.solved"} eq '');
 5320: 	    my $display_part=&get_display_part($partid,$symb);
 5321: 	    foreach my $matchKey (@matchKey) {
 5322: 		if (exists($$record{$version.':'.$matchKey}) &&
 5323: 		    $$record{$version.':'.$matchKey} ne '') {
 5324:                     if ($is_tool) {
 5325:                         $displaySub[0].=$$record{"$version:resource.$partid.awarded"};
 5326:                     } else {
 5327: 		        my ($responseId)= ($isTask ? ($matchKey=~ /^resource\.(.*?)\.\Q$partid\E\.award$/)
 5328: 				                   : ($matchKey=~ /^resource\.\Q$partid\E\.(.*?)\.submission$/));
 5329:                         $displaySub[0].='<span class="LC_nobreak">';
 5330:                         $displaySub[0].='<b>'.&mt('Part: [_1]',$display_part).'</b>'
 5331:                                        .' <span class="LC_internal_info">'
 5332:                                        .'('.&mt('Response ID: [_1]',$responseId).')'
 5333:                                        .'</span>'
 5334:                                        .' <b>';
 5335:                         if ($hidden) {
 5336:                             $displaySub[0].= &mt('Anonymous Survey').'</b>';
 5337:                         } else {
 5338:                             my ($trial,$rndseed,$newvariation);
 5339:                             if ($type eq 'randomizetry') {
 5340:                                 $trial = $$record{"$where.$partid.tries"};
 5341:                                 $rndseed = $$record{"$where.$partid.rndseed"};
 5342:                             }
 5343: 		            if ($$record{"$where.$partid.tries"} eq '') {
 5344: 			        $displaySub[0].=&mt('Trial not counted');
 5345: 		            } else {
 5346: 			        $displaySub[0].=&mt('Trial: [_1]',
 5347: 					        $$record{"$where.$partid.tries"});
 5348:                                 if (($rndseed ne '') && ($lastrndseed{$partid} ne '')) {
 5349:                                     if (($rndseed ne $lastrndseed{$partid}) &&
 5350:                                         (($type eq 'randomizetry') || ($lasttype{$partid} eq 'randomizetry'))) {
 5351:                                         $newvariation = '&nbsp;('.&mt('New variation this try').')';
 5352:                                     }
 5353:                                 }
 5354:                                 $lastrndseed{$partid} = $rndseed;
 5355:                                 $lasttype{$partid} = $type;
 5356: 		            }
 5357: 		            my $responseType=($isTask ? 'Task'
 5358:                                               : $responseType->{$partid}->{$responseId});
 5359: 		            if (!exists($orders{$partid})) { $orders{$partid}={}; }
 5360: 		            if ((!exists($orders{$partid}->{$responseId})) || ($trial)) {
 5361: 			        $orders{$partid}->{$responseId}=
 5362: 			            &get_order($partid,$responseId,$symb,$uname,$udom,
 5363:                                                $no_increment,$type,$trial,$rndseed);
 5364: 		            }
 5365: 		            $displaySub[0].='</b>'.$newvariation.'</span>'; # /nobreak
 5366: 		            $displaySub[0].='&nbsp; '.
 5367: 			        &cleanRecord($$record{$version.':'.$matchKey},$responseType,$symb,$partid,$responseId,$record,$orders{$partid}->{$responseId},"$version:",$uname,$udom,$type,$trial,$rndseed).'<br />';
 5368:                         }
 5369:                     }
 5370: 		}
 5371: 	    }
 5372: 	    if (exists($$record{"$where.$partid.checkedin"})) {
 5373: 		$displaySub[1].=&mt('Checked in by [_1] into slot [_2]',
 5374: 				    $$record{"$where.$partid.checkedin"},
 5375: 				    $$record{"$where.$partid.checkedin.slot"}).
 5376: 					'<br />';
 5377: 	    }
 5378: 	    if (exists $$record{"$where.$partid.award"}) {
 5379: 		$displaySub[1].='<b>'.&mt('Part:').'</b>&nbsp;'.$display_part.' &nbsp;'.
 5380: 		    lc($$record{"$where.$partid.award"}).' '.
 5381: 		    $mark{$$record{"$where.$partid.solved"}}.
 5382: 		    '<br />';
 5383: 	    } elsif (($is_tool) && (exists($$record{"$version:resource.$partid.solved"}))) {
 5384: 		if ($$record{"$version:resource.$partid.solved"} =~ /^(in|)correct_by_passback$/) {
 5385: 		    $displaySub[1].=&mt('Grade passed back by external tool');
 5386: 		}
 5387: 	    }
 5388: 	    if (exists $$record{"$where.$partid.regrader"}) {
 5389: 		$displaySub[2].=$$record{"$where.$partid.regrader"};
 5390: 		unless ($is_tool) {
 5391: 		    $displaySub[2].=' (<b>'.&mt('Part').':</b> '.$display_part.')';
 5392: 		}
 5393: 	    } elsif ($$record{"$version:resource.$partid.regrader"} =~ /\S/) {
 5394: 		$displaySub[2].=
 5395: 		    $$record{"$version:resource.$partid.regrader"};
 5396:                 unless ($is_tool) {
 5397: 		    $displaySub[2].=' (<b>'.&mt('Part').':</b> '.$display_part.')';
 5398:                 }
 5399: 	    }
 5400: 	}
 5401: 	# needed because old essay regrader has not parts info
 5402: 	if (exists $$record{"$version:resource.regrader"}) {
 5403: 	    $displaySub[2].=$$record{"$version:resource.regrader"};
 5404: 	}
 5405: 	$studentTable.='<td>'.$displaySub[0].'&nbsp;</td><td>'.$displaySub[1];
 5406: 	if ($displaySub[2]) {
 5407: 	    $studentTable.=&mt('Manually graded by [_1]',$displaySub[2]);
 5408: 	}
 5409: 	$studentTable.='&nbsp;</td>'.
 5410: 	    &Apache::loncommon::end_data_table_row();
 5411:     }
 5412:     $studentTable.=&Apache::loncommon::end_data_table();
 5413:     return $studentTable;
 5414: }
 5415: 
 5416: sub updateGradeByPage {
 5417:     my ($request,$symb) = @_;
 5418: 
 5419:     my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
 5420:     my $cnum      = $env{"course.$env{'request.course.id'}.num"};
 5421:     my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
 5422:     my $pageTitle = $env{'form.page'};
 5423:     my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
 5424:     my ($uname,$udom) = split(/:/,$env{'form.student'});
 5425:     my $usec=$classlist->{$env{'form.student'}}[5];
 5426:     if (!&canmodify($usec)) {
 5427: 	$request->print('<span class="LC_warning">'.&mt('Unable to modify requested student ([_1])',$env{'form.student'}).'</span>');
 5428: 	return;
 5429:     }
 5430:     my $result='<h3><span class="LC_info">&nbsp;'.$env{'form.title'}.'</span></h3>';
 5431:     $result.='<h3>&nbsp;'.&mt('Student: ').&nameUserString(undef,$env{'form.fullname'},$uname,$udom).
 5432: 	'</h3>'."\n";
 5433: 
 5434:     $request->print($result);
 5435: 
 5436: 
 5437:     my $navmap = Apache::lonnavmaps::navmap->new();
 5438:     unless (ref($navmap)) {
 5439:         $request->print(&navmap_errormsg());
 5440:         return;
 5441:     }
 5442:     my ($mapUrl, $id, $resUrl) = &Apache::lonnet::decode_symb( $env{'form.page'});
 5443:     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
 5444:     if (!$map) {
 5445: 	$request->print('<span class="LC_warning">'.&mt('Unable to grade requested sequence ([_1]).',$resUrl).'</span>');
 5446: 	return; 
 5447:     }
 5448:     my $iterator = $navmap->getIterator($map->map_start(),
 5449: 					$map->map_finish());
 5450: 
 5451:     my $studentTable=
 5452: 	&Apache::loncommon::start_data_table().
 5453: 	&Apache::loncommon::start_data_table_header_row().
 5454: 	'<th align="center">&nbsp;'.&mt('Prob.').'&nbsp;</th>'.
 5455: 	'<th>&nbsp;'.&mt('Title').'&nbsp;</th>'.
 5456: 	'<th>&nbsp;'.&mt('Previous Score').'&nbsp;</th>'.
 5457: 	'<th>&nbsp;'.&mt('New Score').'&nbsp;</th>'.
 5458: 	&Apache::loncommon::end_data_table_header_row();
 5459: 
 5460:     $iterator->next(); # skip the first BEGIN_MAP
 5461:     my $curRes = $iterator->next(); # for "current resource"
 5462:     my ($depth,$question,$prob,$changeflag,$hideflag)= (1,1,1,0,0);
 5463:     while ($depth > 0) {
 5464:         if($curRes == $iterator->BEGIN_MAP) { $depth++; }
 5465:         if($curRes == $iterator->END_MAP) { $depth--; }
 5466: 
 5467:         if (ref($curRes) && $curRes->is_problem()) {
 5468: 	    my $parts = $curRes->parts();
 5469:             my $title = $curRes->compTitle();
 5470: 	    my $symbx = $curRes->symb();
 5471: 	    $studentTable.=
 5472: 		&Apache::loncommon::start_data_table_row().
 5473: 		'<td align="center" valign="top" >'.$prob.
 5474: 		(scalar(@{$parts}) == 1 ? '' 
 5475:                                         : '<br />('.&mt('[quant,_1,part]',scalar(@{$parts}))
 5476: 		.')').'</td>';
 5477: 	    $studentTable.='<td valign="top">&nbsp;<b>'.$title.'</b>&nbsp;</td>';
 5478: 
 5479: 	    my %newrecord=();
 5480: 	    my @displayPts=();
 5481:             my %aggregate = ();
 5482:             my $aggregateflag = 0;
 5483:             if ($env{'form.HIDE'.$prob}) {
 5484:                 my %record = &Apache::lonnet::restore($symbx,$env{'request.course.id'},$udom,$uname);
 5485:                 my ($version,$parts) = split(/:/,$env{'form.HIDE'.$prob},2);
 5486:                 my $numchgs = &makehidden($version,$parts,\%record,$symbx,$udom,$uname,1);
 5487:                 $hideflag += $numchgs;
 5488:             }
 5489: 	    foreach my $partid (@{$parts}) {
 5490: 		my $newpts = $env{'form.GD_BOX'.$question.'_'.$partid};
 5491: 		my $oldpts = $env{'form.oldpts'.$question.'_'.$partid};
 5492: 
 5493: 		my $wgt = $env{'form.WGT'.$question.'_'.$partid} != 0 ? 
 5494: 		    $env{'form.WGT'.$question.'_'.$partid} : 1;
 5495: 		my $partial = $newpts/$wgt;
 5496: 		my $score;
 5497: 		if ($partial > 0) {
 5498: 		    $score = 'correct_by_override';
 5499: 		} elsif ($newpts ne '') { #empty is taken as 0
 5500: 		    $score = 'incorrect_by_override';
 5501: 		}
 5502: 		my $dropMenu = $env{'form.GD_SEL'.$question.'_'.$partid};
 5503: 		if ($dropMenu eq 'excused') {
 5504: 		    $partial = '';
 5505: 		    $score = 'excused';
 5506: 		} elsif ($dropMenu eq 'reset status'
 5507: 			 && $env{'form.solved'.$question.'_'.$partid} ne '') { #update only if previous record exists
 5508: 		    $newrecord{'resource.'.$partid.'.tries'} = 0;
 5509: 		    $newrecord{'resource.'.$partid.'.solved'} = '';
 5510: 		    $newrecord{'resource.'.$partid.'.award'} = '';
 5511: 		    $newrecord{'resource.'.$partid.'.awarded'} = 0;
 5512: 		    $newrecord{'resource.'.$partid.'.regrader'} = "$env{'user.name'}:$env{'user.domain'}";
 5513: 		    $changeflag++;
 5514: 		    $newpts = '';
 5515:                     
 5516:                     my $aggtries =  $env{'form.aggtries'.$question.'_'.$partid};
 5517:                     my $totaltries = $env{'form.totaltries'.$question.'_'.$partid};
 5518:                     my $solvedstatus = $env{'form.solved'.$question.'_'.$partid};
 5519:                     if ($aggtries > 0) {
 5520:                         &decrement_aggs($symbx,$partid,\%aggregate,$aggtries,$totaltries,$solvedstatus);
 5521:                         $aggregateflag = 1;
 5522:                     }
 5523: 		}
 5524: 		my $display_part=&get_display_part($partid,$curRes->symb());
 5525: 		my $oldstatus = $env{'form.solved'.$question.'_'.$partid};
 5526: 		$displayPts[0].='&nbsp;<b>'.&mt('Part').':</b> '.$display_part.' = '.
 5527: 		    (($oldstatus eq 'excused') ? 'excused' : $oldpts).
 5528: 		    '&nbsp;<br />';
 5529: 		$displayPts[1].='&nbsp;<b>'.&mt('Part').':</b> '.$display_part.' = '.
 5530: 		     (($score eq 'excused') ? 'excused' : $newpts).
 5531: 		    '&nbsp;<br />';
 5532: 		$question++;
 5533: 		next if ($dropMenu eq 'reset status' || ($newpts eq $oldpts && $score ne 'excused'));
 5534: 
 5535: 		$newrecord{'resource.'.$partid.'.awarded'}  = $partial if $partial ne '';
 5536: 		$newrecord{'resource.'.$partid.'.solved'}   = $score if $score ne '';
 5537: 		$newrecord{'resource.'.$partid.'.regrader'} = "$env{'user.name'}:$env{'user.domain'}"
 5538: 		    if (scalar(keys(%newrecord)) > 0);
 5539: 
 5540: 		$changeflag++;
 5541: 	    }
 5542: 	    if (scalar(keys(%newrecord)) > 0) {
 5543: 		my %record = 
 5544: 		    &Apache::lonnet::restore($symbx,$env{'request.course.id'},
 5545: 					     $udom,$uname);
 5546: 
 5547: 		if (&Apache::lonnet::validCODE($env{'form.CODE'})) {
 5548: 		    $newrecord{'resource.CODE'} = $env{'form.CODE'};
 5549: 		} elsif (&Apache::lonnet::validCODE($record{'resource.CODE'})) {
 5550: 		    $newrecord{'resource.CODE'} = '';
 5551: 		}
 5552: 		&Apache::lonnet::cstore(\%newrecord,$symbx,$env{'request.course.id'},
 5553: 					$udom,$uname);
 5554: 		%record = &Apache::lonnet::restore($symbx,
 5555: 						   $env{'request.course.id'},
 5556: 						   $udom,$uname);
 5557: 		&check_and_remove_from_queue($parts,\%record,undef,$symbx,
 5558: 					     $cdom,$cnum,$udom,$uname);
 5559: 	    }
 5560: 	    
 5561:             if ($aggregateflag) {
 5562:                 &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
 5563:                       $env{'course.'.$env{'request.course.id'}.'.domain'},
 5564:                       $env{'course.'.$env{'request.course.id'}.'.num'});
 5565:             }
 5566: 
 5567: 	    $studentTable.='<td valign="top">'.$displayPts[0].'</td>'.
 5568: 		'<td valign="top">'.$displayPts[1].'</td>'.
 5569: 		&Apache::loncommon::end_data_table_row();
 5570: 
 5571: 	    $prob++;
 5572: 	}
 5573:         $curRes = $iterator->next();
 5574:     }
 5575: 
 5576:     $studentTable.=&Apache::loncommon::end_data_table();
 5577:     my $grademsg=($changeflag == 0 ? &mt('No score was changed or updated.') :
 5578: 		  &mt('The scores were changed for [quant,_1,problem].',
 5579: 		  $changeflag).'<br />');
 5580:     my $hidemsg=($hideflag == 0 ? '' :
 5581:                  &mt('Submissions were marked "hidden" for [quant,_1,transaction].',
 5582:                      $hideflag).'<br />');
 5583:     $request->print($hidemsg.$grademsg.$studentTable);
 5584: 
 5585:     return '';
 5586: }
 5587: 
 5588: #-------- end of section for handling grading by page/sequence ---------
 5589: #
 5590: #-------------------------------------------------------------------
 5591: 
 5592: #-------------------- Bubblesheet (Scantron) Grading -------------------
 5593: #
 5594: #------ start of section for handling grading by page/sequence ---------
 5595: 
 5596: =pod
 5597: 
 5598: =head1 Bubble sheet grading routines
 5599: 
 5600:   For this documentation:
 5601: 
 5602:    'scanline' refers to the full line of characters
 5603:    from the file that we are parsing that represents one entire sheet
 5604: 
 5605:    'bubble line' refers to the data
 5606:    representing the line of bubbles that are on the physical bubblesheet
 5607: 
 5608: 
 5609: The overall process is that a scanned in bubblesheet data is uploaded
 5610: into a course. When a user wants to grade, they select a
 5611: sequence/folder of resources, a file of bubblesheet info, and pick
 5612: one of the predefined configurations for what each scanline looks
 5613: like.
 5614: 
 5615: Next each scanline is checked for any errors of either 'missing
 5616: bubbles' (it's an error because it may have been mis-scanned
 5617: because too light bubbling), 'double bubble' (each bubble line should
 5618: have no more than one letter picked), invalid or duplicated CODE,
 5619: invalid student/employee ID
 5620: 
 5621: If the CODE option is used that determines the randomization of the
 5622: homework problems, either way the student/employee ID is looked up into a
 5623: username:domain.
 5624: 
 5625: During the validation phase the instructor can choose to skip scanlines. 
 5626: 
 5627: After the validation phase, there are now 3 bubblesheet files
 5628: 
 5629:   scantron_original_filename (unmodified original file)
 5630:   scantron_corrected_filename (file where the corrected information has replaced the original information)
 5631:   scantron_skipped_filename (contains the exact text of scanlines that where skipped)
 5632: 
 5633: Also there is a separate hash nohist_scantrondata that contains extra
 5634: correction information that isn't representable in the bubblesheet
 5635: file (see &scantron_getfile() for more information)
 5636: 
 5637: After all scanlines are either valid, marked as valid or skipped, then
 5638: foreach line foreach problem in the picked sequence, an ssi request is
 5639: made that simulates a user submitting their selected letter(s) against
 5640: the homework problem.
 5641: 
 5642: =over 4
 5643: 
 5644: 
 5645: 
 5646: =item defaultFormData
 5647: 
 5648:   Returns html hidden inputs used to hold context/default values.
 5649: 
 5650:  Arguments:
 5651:   $symb - $symb of the current resource 
 5652: 
 5653: =cut
 5654: 
 5655: sub defaultFormData {
 5656:     my ($symb)=@_;
 5657:     return '<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />';
 5658: }
 5659: 
 5660: 
 5661: =pod 
 5662: 
 5663: =item getSequenceDropDown
 5664: 
 5665:    Return html dropdown of possible sequences to grade
 5666:  
 5667:  Arguments:
 5668:    $symb - $symb of the current resource
 5669:    $map_error - ref to scalar which will container error if
 5670:                 $navmap object is unavailable in &getSymbMap().
 5671: 
 5672: =cut
 5673: 
 5674: sub getSequenceDropDown {
 5675:     my ($symb,$map_error)=@_;
 5676:     my $result='<select name="selectpage">'."\n";
 5677:     my ($titles,$symbx) = &getSymbMap($map_error);
 5678:     if (ref($map_error)) {
 5679:         return if ($$map_error);
 5680:     }
 5681:     my ($curpage)=&Apache::lonnet::decode_symb($symb); 
 5682:     my $ctr=0;
 5683:     foreach (@$titles) {
 5684: 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
 5685: 	$result.='<option value="'.$$symbx{$_}.'" '.
 5686: 	    ($$symbx{$_} =~ /$curpage$/ ? 'selected="selected"' : '').
 5687: 	    '>'.$showtitle.'</option>'."\n";
 5688: 	$ctr++;
 5689:     }
 5690:     $result.= '</select>';
 5691:     return $result;
 5692: }
 5693: 
 5694: my %bubble_lines_per_response;     # no. bubble lines for each response.
 5695:                                    # key is zero-based index - 0, 1, 2 ...
 5696: 
 5697: my %first_bubble_line;             # First bubble line no. for each bubble.
 5698: 
 5699: my %subdivided_bubble_lines;       # no. bubble lines for optionresponse, 
 5700:                                    # matchresponse or rankresponse, where 
 5701:                                    # an individual response can have multiple 
 5702:                                    # lines
 5703: 
 5704: my %responsetype_per_response;     # responsetype for each response
 5705: 
 5706: my %masterseq_id_responsenum;      # src_id (e.g., 12.3_0.11 etc.) for each
 5707:                                    # numbered response. Needed when randomorder
 5708:                                    # or randompick are in use. Key is ID, value 
 5709:                                    # is response number.
 5710: 
 5711: # Save and restore the bubble lines array to the form env.
 5712: 
 5713: 
 5714: sub save_bubble_lines {
 5715:     foreach my $line (keys(%bubble_lines_per_response)) {
 5716: 	$env{"form.scantron.bubblelines.$line"}  = $bubble_lines_per_response{$line};
 5717: 	$env{"form.scantron.first_bubble_line.$line"} =
 5718: 	    $first_bubble_line{$line};
 5719:         $env{"form.scantron.sub_bubblelines.$line"} = 
 5720:             $subdivided_bubble_lines{$line};
 5721:         $env{"form.scantron.responsetype.$line"} =
 5722:             $responsetype_per_response{$line};
 5723:     }
 5724:     foreach my $resid (keys(%masterseq_id_responsenum)) {
 5725:         my $line = $masterseq_id_responsenum{$resid};
 5726:         $env{"form.scantron.residpart.$line"} = $resid;
 5727:     }
 5728: }
 5729: 
 5730: 
 5731: sub restore_bubble_lines {
 5732:     my $line = 0;
 5733:     %bubble_lines_per_response = ();
 5734:     %masterseq_id_responsenum = ();
 5735:     while ($env{"form.scantron.bubblelines.$line"}) {
 5736: 	my $value = $env{"form.scantron.bubblelines.$line"};
 5737: 	$bubble_lines_per_response{$line} = $value;
 5738: 	$first_bubble_line{$line}  =
 5739: 	    $env{"form.scantron.first_bubble_line.$line"};
 5740:         $subdivided_bubble_lines{$line} =
 5741:             $env{"form.scantron.sub_bubblelines.$line"};
 5742:         $responsetype_per_response{$line} =
 5743:             $env{"form.scantron.responsetype.$line"};
 5744:         my $id = $env{"form.scantron.residpart.$line"};
 5745:         $masterseq_id_responsenum{$id} = $line;
 5746: 	$line++;
 5747:     }
 5748: }
 5749: 
 5750: =pod 
 5751: 
 5752: =item scantron_filenames
 5753: 
 5754:    Returns a list of the scantron files in the current course 
 5755: 
 5756: =cut
 5757: 
 5758: sub scantron_filenames {
 5759:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 5760:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 5761:     my $getpropath = 1;
 5762:     my ($dirlist,$listerror) = &Apache::lonnet::dirlist('userfiles',$cdom,
 5763:                                                         $cname,$getpropath);
 5764:     my @possiblenames;
 5765:     if (ref($dirlist) eq 'ARRAY') {
 5766:         foreach my $filename (sort(@{$dirlist})) {
 5767: 	    ($filename)=split(/&/,$filename);
 5768: 	    if ($filename!~/^scantron_orig_/) { next ; }
 5769: 	    $filename=~s/^scantron_orig_//;
 5770: 	    push(@possiblenames,$filename);
 5771:         }
 5772:     }
 5773:     return @possiblenames;
 5774: }
 5775: 
 5776: =pod 
 5777: 
 5778: =item scantron_uploads
 5779: 
 5780:    Returns  html drop-down list of scantron files in current course.
 5781: 
 5782:  Arguments:
 5783:    $file2grade - filename to set as selected in the dropdown
 5784: 
 5785: =cut
 5786: 
 5787: sub scantron_uploads {
 5788:     my ($file2grade) = @_;
 5789:     my $result=	'<select name="scantron_selectfile">';
 5790:     $result.="<option></option>";
 5791:     foreach my $filename (sort(&scantron_filenames())) {
 5792: 	$result.="<option".($filename eq $file2grade ? ' selected="selected"':'').">$filename</option>\n";
 5793:     }
 5794:     $result.="</select>";
 5795:     return $result;
 5796: }
 5797: 
 5798: =pod 
 5799: 
 5800: =item scantron_scantab
 5801: 
 5802:   Returns html drop down of the scantron formats in the scantronformat.tab
 5803:   file.
 5804: 
 5805: =cut
 5806: 
 5807: sub scantron_scantab {
 5808:     my $result='<select name="scantron_format">'."\n";
 5809:     $result.='<option></option>'."\n";
 5810:     my @lines = &Apache::lonnet::get_scantronformat_file();
 5811:     if (@lines > 0) {
 5812:         foreach my $line (@lines) {
 5813:             next if (($line =~ /^\#/) || ($line eq ''));
 5814: 	    my ($name,$descrip)=split(/:/,$line);
 5815: 	    $result.='<option value="'.$name.'">'.$descrip.'</option>'."\n";
 5816:         }
 5817:     }
 5818:     $result.='</select>'."\n";
 5819:     return $result;
 5820: }
 5821: 
 5822: =pod 
 5823: 
 5824: =item scantron_CODElist
 5825: 
 5826:   Returns html drop down of the saved CODE lists from current course,
 5827:   generated from earlier printings.
 5828: 
 5829: =cut
 5830: 
 5831: sub scantron_CODElist {
 5832:     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 5833:     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 5834:     my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
 5835:     my $namechoice='<option></option>';
 5836:     foreach my $name (sort {uc($a) cmp uc($b)} @names) {
 5837: 	if ($name =~ /^error: 2 /) { next; }
 5838: 	if ($name =~ /^type\0/) { next; }
 5839: 	$namechoice.='<option value="'.$name.'">'.$name.'</option>';
 5840:     }
 5841:     $namechoice='<select name="scantron_CODElist">'.$namechoice.'</select>';
 5842:     return $namechoice;
 5843: }
 5844: 
 5845: =pod 
 5846: 
 5847: =item scantron_CODEunique
 5848: 
 5849:   Returns the html for "Each CODE to be used once" radio.
 5850: 
 5851: =cut
 5852: 
 5853: sub scantron_CODEunique {
 5854:     my $result='<span class="LC_nobreak">
 5855:                  <label><input type="radio" name="scantron_CODEunique"
 5856:                         value="yes" checked="checked" />'.&mt('Yes').' </label>
 5857:                 </span>
 5858:                 <span class="LC_nobreak">
 5859:                  <label><input type="radio" name="scantron_CODEunique"
 5860:                         value="no" />'.&mt('No').' </label>
 5861:                 </span>';
 5862:     return $result;
 5863: }
 5864: 
 5865: =pod 
 5866: 
 5867: =item scantron_selectphase
 5868: 
 5869:   Generates the initial screen to start the bubblesheet process.
 5870:   Allows for - starting a grading run.
 5871:              - downloading existing scan data (original, corrected
 5872:                                                 or skipped info)
 5873: 
 5874:              - uploading new scan data
 5875: 
 5876:  Arguments:
 5877:   $r          - The Apache request object
 5878:   $file2grade - name of the file that contain the scanned data to score
 5879: 
 5880: =cut
 5881: 
 5882: sub scantron_selectphase {
 5883:     my ($r,$file2grade,$symb) = @_;
 5884:     if (!$symb) {return '';}
 5885:     my $map_error;
 5886:     my $sequence_selector=&getSequenceDropDown($symb,\$map_error);
 5887:     if ($map_error) {
 5888:         $r->print('<br />'.&navmap_errormsg().'<br />');
 5889:         return;
 5890:     }
 5891:     my $default_form_data=&defaultFormData($symb);
 5892:     my $file_selector=&scantron_uploads($file2grade);
 5893:     my $format_selector=&scantron_scantab();
 5894:     my $CODE_selector=&scantron_CODElist();
 5895:     my $CODE_unique=&scantron_CODEunique();
 5896:     my $result;
 5897: 
 5898:     $ssi_error = 0;
 5899: 
 5900:     if (&Apache::lonnet::allowed('usc',$env{'request.role.domain'}) ||
 5901:         &Apache::lonnet::allowed('usc',$env{'request.course.id'})) {
 5902: 
 5903: 	# Chunk of form to prompt for a scantron file upload.
 5904: 
 5905:         $r->print('
 5906:     <br />');
 5907:     my $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
 5908:     my $cnum= $env{'course.'.$env{'request.course.id'}.'.num'};
 5909:     my $alertmsg = &mt('Please use the browse button to select a file from your local directory.');
 5910:     &js_escape(\$alertmsg);
 5911:     my ($formatoptions,$formattitle,$formatjs) = &scantron_upload_dataformat($cdom);
 5912:     $r->print(&Apache::lonhtmlcommon::scripttag('
 5913:     function checkUpload(formname) {
 5914: 	if (formname.upfile.value == "") {
 5915: 	    alert("'.$alertmsg.'");
 5916: 	    return false;
 5917: 	}
 5918: 	formname.submit();
 5919:     }'."\n".$formatjs));
 5920:     $r->print('
 5921:               <form enctype="multipart/form-data" action="/adm/grades" name="rules" method="post">
 5922:                 '.$default_form_data.'
 5923:                 <input name="courseid" type="hidden" value="'.$cnum.'" />
 5924:                 <input name="domainid" type="hidden" value="'.$cdom.'" />
 5925:                 <input name="command" value="scantronupload_save" type="hidden" />
 5926:               '.&Apache::loncommon::start_data_table('LC_scantron_action').'
 5927:               '.&Apache::loncommon::start_data_table_header_row().'
 5928:                 <th>
 5929:                 &nbsp;'.&mt('Specify a bubblesheet data file to upload.').'
 5930:                 </th>
 5931:               '.&Apache::loncommon::end_data_table_header_row().'
 5932:               '.&Apache::loncommon::start_data_table_row().'
 5933:             <td>
 5934:                 '.&mt('File to upload: [_1]','<input type="file" name="upfile" size="50" />').'<br />'."\n");
 5935:     if ($formatoptions) {
 5936:         $r->print('</td>
 5937:                  '.&Apache::loncommon::end_data_table_row().'
 5938:                  '.&Apache::loncommon::start_data_table_row().'
 5939:                  <td>'.$formattitle.('&nbsp;'x2).$formatoptions.'
 5940:                  </td>
 5941:                  '.&Apache::loncommon::end_data_table_row().'
 5942:                  '.&Apache::loncommon::start_data_table_row().'
 5943:                  <td>'
 5944:         );
 5945:     } else {
 5946:         $r->print(' <br />');
 5947:     }
 5948:     $r->print('<input type="button" onclick="javascript:checkUpload(this.form);" value="'.&mt('Upload Bubblesheet Data').'" />
 5949:               </td>
 5950:              '.&Apache::loncommon::end_data_table_row().'
 5951:              '.&Apache::loncommon::end_data_table().'
 5952:              </form>'
 5953:     );
 5954: 
 5955:     }
 5956: 
 5957:     # Chunk of form to prompt for a file to grade and how:
 5958: 
 5959:     $result.= '
 5960:     <br />
 5961:     <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantron_process">
 5962:     <input type="hidden" name="command" value="scantron_warning" />
 5963:     '.$default_form_data.'
 5964:     '.&Apache::loncommon::start_data_table('LC_scantron_action').'
 5965:        '.&Apache::loncommon::start_data_table_header_row().'
 5966:             <th colspan="2">
 5967:               &nbsp;'.&mt('Specify file and which Folder/Sequence to grade').'
 5968:             </th>
 5969:        '.&Apache::loncommon::end_data_table_header_row().'
 5970:        '.&Apache::loncommon::start_data_table_row().'
 5971:             <td> '.&mt('Sequence to grade:').' </td><td> '.$sequence_selector.' </td>
 5972:        '.&Apache::loncommon::end_data_table_row().'
 5973:        '.&Apache::loncommon::start_data_table_row().'
 5974:             <td> '.&mt('Filename of bubblesheet data file:').' </td><td> '.$file_selector.' </td>
 5975:        '.&Apache::loncommon::end_data_table_row().'
 5976:        '.&Apache::loncommon::start_data_table_row().'
 5977:             <td> '.&mt('Format of bubblesheet data file:').' </td><td> '.$format_selector.' </td>
 5978:        '.&Apache::loncommon::end_data_table_row().'
 5979:        '.&Apache::loncommon::start_data_table_row().'
 5980:             <td> '.&mt('Saved CODEs to validate against:').' </td><td> '.$CODE_selector.' </td>
 5981:        '.&Apache::loncommon::end_data_table_row().'
 5982:        '.&Apache::loncommon::start_data_table_row().'
 5983:             <td> '.&mt('Each CODE is only to be used once:').'</td><td> '.$CODE_unique.' </td>
 5984:        '.&Apache::loncommon::end_data_table_row().'
 5985:        '.&Apache::loncommon::start_data_table_row().'
 5986: 	    <td> '.&mt('Options:').' </td>
 5987:             <td>
 5988: 	       <label><input type="checkbox" name="scantron_options_redo" value="redo_skipped"/> '.&mt('Do only previously skipped records').'</label> <br />
 5989:                <label><input type="checkbox" name="scantron_options_ignore" value="ignore_corrections"/> '.&mt('Remove all existing corrections').'</label> <br />
 5990:                <label><input type="checkbox" name="scantron_options_hidden" value="ignore_hidden"/> '.&mt('Skip hidden resources when grading').'</label>
 5991: 	    </td>
 5992:        '.&Apache::loncommon::end_data_table_row().'
 5993:        '.&Apache::loncommon::start_data_table_row().'
 5994:             <td colspan="2">
 5995:               <input type="submit" value="'.&mt('Grading: Validate Bubblesheet Records').'" />
 5996:             </td>
 5997:        '.&Apache::loncommon::end_data_table_row().'
 5998:     '.&Apache::loncommon::end_data_table().'
 5999:     </form>
 6000: ';
 6001:    
 6002:     $r->print($result);
 6003: 
 6004: 
 6005: 
 6006:     # Chunk of the form that prompts to view a scoring office file,
 6007:     # corrected file, skipped records in a file.
 6008: 
 6009:     $r->print('
 6010:    <br />
 6011:    <form action="/adm/grades" name="scantron_download">
 6012:      '.$default_form_data.'
 6013:      <input type="hidden" name="command" value="scantron_download" />
 6014:      '.&Apache::loncommon::start_data_table('LC_scantron_action').'
 6015:        '.&Apache::loncommon::start_data_table_header_row().'
 6016:               <th>
 6017:                 &nbsp;'.&mt('Download a scoring office file').'
 6018:               </th>
 6019:        '.&Apache::loncommon::end_data_table_header_row().'
 6020:        '.&Apache::loncommon::start_data_table_row().'
 6021:               <td> '.&mt('Filename of scoring office file: [_1]',$file_selector).' 
 6022:                 <br />
 6023:                 <input type="submit" value="'.&mt('Download: Show List of Associated Files').'" />
 6024:        '.&Apache::loncommon::end_data_table_row().'
 6025:      '.&Apache::loncommon::end_data_table().'
 6026:    </form>
 6027:    <br />
 6028: ');
 6029: 
 6030:     &Apache::lonpickcode::code_list($r,2);
 6031: 
 6032:     $r->print('<br /><form method="post" name="checkscantron" action="">'.
 6033:              $default_form_data."\n".
 6034:              &Apache::loncommon::start_data_table('LC_scantron_action')."\n".
 6035:              &Apache::loncommon::start_data_table_header_row()."\n".
 6036:              '<th colspan="2">
 6037:               &nbsp;'.&mt('Review bubblesheet data and submissions for a previously graded folder/sequence')."\n".
 6038:              '</th>'."\n".
 6039:               &Apache::loncommon::end_data_table_header_row()."\n".
 6040:               &Apache::loncommon::start_data_table_row()."\n".
 6041:               '<td> '.&mt('Graded folder/sequence:').' </td>'."\n".
 6042:               '<td> '.$sequence_selector.' </td>'.
 6043:               &Apache::loncommon::end_data_table_row()."\n".
 6044:               &Apache::loncommon::start_data_table_row()."\n".
 6045:               '<td> '.&mt('Filename of scoring office file:').' </td>'."\n".
 6046:               '<td> '.$file_selector.' </td>'."\n".
 6047:               &Apache::loncommon::end_data_table_row()."\n".
 6048:               &Apache::loncommon::start_data_table_row()."\n".
 6049:               '<td> '.&mt('Format of data file:').' </td>'."\n".
 6050:               '<td> '.$format_selector.' </td>'."\n".
 6051:               &Apache::loncommon::end_data_table_row()."\n".
 6052:               &Apache::loncommon::start_data_table_row()."\n".
 6053:               '<td> '.&mt('Options').' </td>'."\n".
 6054:               '<td> <label><input type="checkbox" name="scantron_options_hidden" value="ignore_hidden"/> '.&mt('Skip hidden resources').'</label></td>'.
 6055:               &Apache::loncommon::end_data_table_row()."\n".
 6056:               &Apache::loncommon::start_data_table_row()."\n".
 6057:               '<td colspan="2">'."\n".
 6058:               '<input type="hidden" name="command" value="checksubmissions" />'."\n".
 6059:               '<input type="submit" value="'.&mt('Review Bubblesheet Data and Submission Records').'" />'."\n".
 6060:               '</td>'."\n".
 6061:               &Apache::loncommon::end_data_table_row()."\n".
 6062:               &Apache::loncommon::end_data_table()."\n".
 6063:               '</form><br />');
 6064:     return;
 6065: }
 6066: 
 6067: =pod 
 6068: 
 6069: =item username_to_idmap
 6070: 
 6071:     creates a hash keyed by student/employee ID with values of the corresponding
 6072:     student username:domain. If a single ID occurs for more than one student,
 6073:     the status of the student is checked, and if Active, the value in the hash
 6074:     will be set to the Active student.
 6075: 
 6076:   Arguments:
 6077: 
 6078:     $classlist - reference to the class list hash. This is a hash
 6079:                  keyed by student name:domain  whose elements are references
 6080:                  to arrays containing various chunks of information
 6081:                  about the student. (See loncoursedata for more info).
 6082: 
 6083:   Returns
 6084:     %idmap - the constructed hash
 6085: 
 6086: =cut
 6087: 
 6088: sub username_to_idmap {
 6089:     my ($classlist)= @_;
 6090:     my %idmap;
 6091:     foreach my $student (keys(%$classlist)) {
 6092:         my $id = $classlist->{$student}->[&Apache::loncoursedata::CL_ID];
 6093:         unless ($id eq '') {
 6094:             if (!exists($idmap{$id})) {
 6095:                 $idmap{$id} = $student;
 6096:             } else {
 6097:                 my $status = $classlist->{$student}->[&Apache::loncoursedata::CL_STATUS];
 6098:                 if ($status eq 'Active') {
 6099:                     $idmap{$id} = $student;
 6100:                 }
 6101:             }
 6102:         }
 6103:     }
 6104:     return %idmap;
 6105: }
 6106: 
 6107: =pod
 6108: 
 6109: =item scantron_fixup_scanline
 6110: 
 6111:    Process a requested correction to a scanline.
 6112: 
 6113:   Arguments:
 6114:     $scantron_config   - hash from &Apache::lonnet::get_scantron_config()
 6115:     $scan_data         - hash of correction information 
 6116:                           (see &scantron_getfile())
 6117:     $line              - existing scanline
 6118:     $whichline         - line number of the passed in scanline
 6119:     $field             - type of change to process 
 6120:                          (either 
 6121:                           'ID'     -> correct the student/employee ID
 6122:                           'CODE'   -> correct the CODE
 6123:                           'answer' -> fixup the submitted answers)
 6124:     
 6125:    $args               - hash of additional info,
 6126:                           - 'ID' 
 6127:                                'newid' -> studentID to use in replacement
 6128:                                           of existing one
 6129:                           - 'CODE' 
 6130:                                'CODE_ignore_dup' - set to true if duplicates
 6131:                                                    should be ignored.
 6132: 	                       'CODE' - is new code or 'use_unfound'
 6133:                                         if the existing unfound code should
 6134:                                         be used as is
 6135:                           - 'answer'
 6136:                                'response' - new answer or 'none' if blank
 6137:                                'question' - the bubble line to change
 6138:                                'questionnum' - the question identifier,
 6139:                                                may include subquestion. 
 6140: 
 6141:   Returns:
 6142:     $line - the modified scanline
 6143: 
 6144:   Side effects: 
 6145:     $scan_data - may be updated
 6146: 
 6147: =cut
 6148: 
 6149: 
 6150: sub scantron_fixup_scanline {
 6151:     my ($scantron_config,$scan_data,$line,$whichline,$field,$args)=@_;
 6152:     if ($field eq 'ID') {
 6153: 	if (length($args->{'newid'}) > $$scantron_config{'IDlength'}) {
 6154: 	    return ($line,1,'New value too large');
 6155: 	}
 6156: 	if (length($args->{'newid'}) < $$scantron_config{'IDlength'}) {
 6157: 	    $args->{'newid'}=sprintf('%-'.$$scantron_config{'IDlength'}.'s',
 6158: 				     $args->{'newid'});
 6159: 	}
 6160: 	substr($line,$$scantron_config{'IDstart'}-1,
 6161: 	       $$scantron_config{'IDlength'})=$args->{'newid'};
 6162: 	if ($args->{'newid'}=~/^\s*$/) {
 6163: 	    &scan_data($scan_data,"$whichline.user",
 6164: 		       $args->{'username'}.':'.$args->{'domain'});
 6165: 	}
 6166:     } elsif ($field eq 'CODE') {
 6167: 	if ($args->{'CODE_ignore_dup'}) {
 6168: 	    &scan_data($scan_data,"$whichline.CODE_ignore_dup",'1');
 6169: 	}
 6170: 	&scan_data($scan_data,"$whichline.useCODE",'1');
 6171: 	if ($args->{'CODE'} ne 'use_unfound') {
 6172: 	    if (length($args->{'CODE'}) > $$scantron_config{'CODElength'}) {
 6173: 		return ($line,1,'New CODE value too large');
 6174: 	    }
 6175: 	    if (length($args->{'CODE'}) < $$scantron_config{'CODElength'}) {
 6176: 		$args->{'CODE'}=sprintf('%-'.$$scantron_config{'CODElength'}.'s',$args->{'CODE'});
 6177: 	    }
 6178: 	    substr($line,$$scantron_config{'CODEstart'}-1,
 6179: 		   $$scantron_config{'CODElength'})=$args->{'CODE'};
 6180: 	}
 6181:     } elsif ($field eq 'answer') {
 6182: 	my $length=$scantron_config->{'Qlength'};
 6183: 	my $off=$scantron_config->{'Qoff'};
 6184: 	my $on=$scantron_config->{'Qon'};
 6185: 	my $answer=${off}x$length;
 6186: 	if ($args->{'response'} eq 'none') {
 6187: 	    &scan_data($scan_data,
 6188: 		       "$whichline.no_bubble.".$args->{'questionnum'},'1');
 6189: 	} else {
 6190: 	    if ($on eq 'letter') {
 6191: 		my @alphabet=('A'..'Z');
 6192: 		$answer=$alphabet[$args->{'response'}];
 6193: 	    } elsif ($on eq 'number') {
 6194: 		$answer=$args->{'response'}+1;
 6195: 		if ($answer == 10) { $answer = '0'; }
 6196: 	    } else {
 6197: 		substr($answer,$args->{'response'},1)=$on;
 6198: 	    }
 6199: 	    &scan_data($scan_data,
 6200: 		       "$whichline.no_bubble.".$args->{'questionnum'},undef,'1');
 6201: 	}
 6202: 	my $where=$length*($args->{'question'}-1)+$scantron_config->{'Qstart'};
 6203: 	substr($line,$where-1,$length)=$answer;
 6204:     }
 6205:     return $line;
 6206: }
 6207: 
 6208: =pod
 6209: 
 6210: =item scan_data
 6211: 
 6212:     Edit or look up  an item in the scan_data hash.
 6213: 
 6214:   Arguments:
 6215:     $scan_data  - The hash (see scantron_getfile)
 6216:     $key        - shorthand of the key to edit (actual key is
 6217:                   scantronfilename_key).
 6218:     $data        - New value of the hash entry.
 6219:     $delete      - If true, the entry is removed from the hash.
 6220: 
 6221:   Returns:
 6222:     The new value of the hash table field (undefined if deleted).
 6223: 
 6224: =cut
 6225: 
 6226: 
 6227: sub scan_data {
 6228:     my ($scan_data,$key,$value,$delete)=@_;
 6229:     my $filename=$env{'form.scantron_selectfile'};
 6230:     if (defined($value)) {
 6231: 	$scan_data->{$filename.'_'.$key} = $value;
 6232:     }
 6233:     if ($delete) { delete($scan_data->{$filename.'_'.$key}); }
 6234:     return $scan_data->{$filename.'_'.$key};
 6235: }
 6236: 
 6237: # ----- These first few routines are general use routines.----
 6238: 
 6239: # Return the number of occurences of a pattern in a string.
 6240: 
 6241: sub occurence_count {
 6242:     my ($string, $pattern) = @_;
 6243: 
 6244:     my @matches = ($string =~ /$pattern/g);
 6245: 
 6246:     return scalar(@matches);
 6247: }
 6248: 
 6249: 
 6250: # Take a string known to have digits and convert all the
 6251: # digits into letters in the range J,A..I.
 6252: 
 6253: sub digits_to_letters {
 6254:     my ($input) = @_;
 6255: 
 6256:     my @alphabet = ('J', 'A'..'I');
 6257: 
 6258:     my @input    = split(//, $input);
 6259:     my $output ='';
 6260:     for (my $i = 0; $i < scalar(@input); $i++) {
 6261: 	if ($input[$i] =~ /\d/) {
 6262: 	    $output .= $alphabet[$input[$i]];
 6263: 	} else {
 6264: 	    $output .= $input[$i];
 6265: 	}
 6266:     }
 6267:     return $output;
 6268: }
 6269: 
 6270: =pod 
 6271: 
 6272: =item scantron_parse_scanline
 6273: 
 6274:   Decodes a scanline from the selected bubblesheet file
 6275: 
 6276:  Arguments:
 6277:     line             - The text of the bubblesheet file line to process
 6278:     whichline        - Line number
 6279:     scantron_config  - Hash describing the format of the bubblesheet lines.
 6280:     scan_data        - Hash of extra information about the scanline
 6281:                        (see scantron_getfile for more information)
 6282:     just_header      - True if should not process question answers but only
 6283:                        the stuff to the left of the answers.
 6284:     randomorder      - True if randomorder in use
 6285:     randompick       - True if randompick in use
 6286:     sequence         - Exam folder URL
 6287:     master_seq       - Ref to array containing symbs in exam folder
 6288:     symb_to_resource - Ref to hash of symbs for resources in exam folder
 6289:                        (corresponding values are resource objects)
 6290:     partids_by_symb  - Ref to hash of symb -> array ref of partIDs
 6291:     orderedforcode   - Ref to hash of arrays. keys are CODEs and values
 6292:                        are refs to an array of resource objects, ordered
 6293:                        according to order used for CODE, when randomorder
 6294:                        and or randompick are in use.
 6295:     respnumlookup    - Ref to hash mapping question numbers in bubble lines
 6296:                        for current line to question number used for same question
 6297:                         in "Master Sequence" (as seen by Course Coordinator).
 6298:     startline        - Ref to hash where key is question number (0 is first)
 6299:                        and value is number of first bubble line for current 
 6300:                        student or code-based randompick and/or randomorder.
 6301:     totalref         - Ref of scalar used to score total number of bubble
 6302:                        lines needed for responses in a scan line (used when
 6303:                        randompick in use. 
 6304:     
 6305:  Returns:
 6306:    Hash containing the result of parsing the scanline
 6307: 
 6308:    Keys are all proceeded by the string 'scantron.'
 6309: 
 6310:        CODE    - the CODE in use for this scanline
 6311:        useCODE - 1 if the CODE is invalid but it usage has been forced
 6312:                  by the operator
 6313:        CODE_ignore_dup - 1 if the CODE is a duplicated use when unique
 6314:                             CODEs were selected, but the usage has been
 6315:                             forced by the operator
 6316:        ID  - student/employee ID
 6317:        PaperID - if used, the ID number printed on the sheet when the 
 6318:                  paper was scanned
 6319:        FirstName - first name from the sheet
 6320:        LastName  - last name from the sheet
 6321: 
 6322:      if just_header was not true these key may also exist
 6323: 
 6324:        missingerror - a list of bubble ranges that are considered to be answers
 6325:                       to a single question that don't have any bubbles filled in.
 6326:                       Of the form questionnumber:firstbubblenumber:count.
 6327:        doubleerror  - a list of bubble ranges that are considered to be answers
 6328:                       to a single question that have more than one bubble filled in.
 6329:                       Of the form questionnumber::firstbubblenumber:count
 6330:    
 6331:                 In the above, count is the number of bubble responses in the
 6332:                 input line needed to represent the possible answers to the question.
 6333:                 e.g. a radioresponse with 15 choices in an answer sheet with 10 choices
 6334:                 per line would have count = 2.
 6335: 
 6336:        maxquest     - the number of the last bubble line that was parsed
 6337: 
 6338:        (<number> starts at 1)
 6339:        <number>.answer - zero or more letters representing the selected
 6340:                          letters from the scanline for the bubble line 
 6341:                          <number>.
 6342:                          if blank there was either no bubble or there where
 6343:                          multiple bubbles, (consult the keys missingerror and
 6344:                          doubleerror if this is an error condition)
 6345: 
 6346: =cut
 6347: 
 6348: sub scantron_parse_scanline {
 6349:     my ($line,$whichline,$scantron_config,$scan_data,$just_header,$idmap,
 6350:         $randomorder,$randompick,$sequence,$master_seq,$symb_to_resource,
 6351:         $partids_by_symb,$orderedforcode,$respnumlookup,$startline,$totalref)=@_;
 6352: 
 6353:     my %record;
 6354:     my $data=substr($line,0,$$scantron_config{'Qstart'}-1); # stuff before answers
 6355:     if (!($$scantron_config{'CODElocation'} eq 0 ||
 6356: 	  $$scantron_config{'CODElocation'} eq 'none')) {
 6357: 	if ($$scantron_config{'CODElocation'} < 0 ||
 6358: 	    $$scantron_config{'CODElocation'} eq 'letter' ||
 6359: 	    $$scantron_config{'CODElocation'} eq 'number') {
 6360: 	    $record{'scantron.CODE'}=substr($data,
 6361: 					    $$scantron_config{'CODEstart'}-1,
 6362: 					    $$scantron_config{'CODElength'});
 6363: 	    if (&scan_data($scan_data,"$whichline.useCODE")) {
 6364: 		$record{'scantron.useCODE'}=1;
 6365: 	    }
 6366: 	    if (&scan_data($scan_data,"$whichline.CODE_ignore_dup")) {
 6367: 		$record{'scantron.CODE_ignore_dup'}=1;
 6368: 	    }
 6369: 	} else {
 6370: 	    #FIXME interpret first N questions
 6371: 	}
 6372:     }
 6373:     $record{'scantron.ID'}=substr($data,$$scantron_config{'IDstart'}-1,
 6374: 				  $$scantron_config{'IDlength'});
 6375:     $record{'scantron.PaperID'}=
 6376: 	substr($data,$$scantron_config{'PaperID'}-1,
 6377: 	       $$scantron_config{'PaperIDlength'});
 6378:     $record{'scantron.FirstName'}=
 6379: 	substr($data,$$scantron_config{'FirstName'}-1,
 6380: 	       $$scantron_config{'FirstNamelength'});
 6381:     $record{'scantron.LastName'}=
 6382: 	substr($data,$$scantron_config{'LastName'}-1,
 6383: 	       $$scantron_config{'LastNamelength'});
 6384:     if ($just_header) { return \%record; }
 6385: 
 6386:     my @alphabet=('A'..'Z');
 6387:     my $questnum=0;
 6388:     my $ansnum  =1;		# Multiple 'answer lines'/question.
 6389: 
 6390:     my $lastpos = $env{'form.scantron_maxbubble'}*$$scantron_config{'Qlength'};
 6391:     if ($randompick || $randomorder) {
 6392:         my $total = &get_respnum_lookups($sequence,$scan_data,$idmap,$line,\%record,
 6393:                                          $master_seq,$symb_to_resource,
 6394:                                          $partids_by_symb,$orderedforcode,
 6395:                                          $respnumlookup,$startline);
 6396:         if ($total) {
 6397:             $lastpos = $total*$$scantron_config{'Qlength'}; 
 6398:         }
 6399:         if (ref($totalref)) {
 6400:             $$totalref = $total;
 6401:         }
 6402:     }
 6403:     my $questions=substr($line,$$scantron_config{'Qstart'}-1,$lastpos);  # Answers
 6404:     chomp($questions);		# Get rid of any trailing \n.
 6405:     $questions =~ s/\r$//;      # Get rid of trailing \r too (MAC or Win uploads).
 6406:     while (length($questions)) {
 6407:         my $answers_needed;
 6408:         if (($randompick || $randomorder) && (ref($respnumlookup) eq 'HASH')) {
 6409:             $answers_needed = $bubble_lines_per_response{$respnumlookup->{$questnum}};
 6410:         } else {
 6411: 	    $answers_needed = $bubble_lines_per_response{$questnum};
 6412:         }
 6413:         my $answer_length  = ($$scantron_config{'Qlength'} * $answers_needed)
 6414:                              || 1;
 6415:         $questnum++;
 6416:         my $quest_id = $questnum;
 6417:         my $currentquest = substr($questions,0,$answer_length);
 6418:         $questions       = substr($questions,$answer_length);
 6419:         if (length($currentquest) < $answer_length) { next; }
 6420: 
 6421:         my $subdivided;
 6422:         if (($randompick || $randomorder) && (ref($respnumlookup) eq 'HASH')) {
 6423:             $subdivided = $subdivided_bubble_lines{$respnumlookup->{$questnum-1}};
 6424:         } else {
 6425:             $subdivided = $subdivided_bubble_lines{$questnum-1};
 6426:         }
 6427:         if ($subdivided =~ /,/) {
 6428:             my $subquestnum = 1;
 6429:             my $subquestions = $currentquest;
 6430:             my @subanswers_needed = split(/,/,$subdivided);
 6431:             foreach my $subans (@subanswers_needed) {
 6432:                 my $subans_length =
 6433:                     ($$scantron_config{'Qlength'} * $subans)  || 1;
 6434:                 my $currsubquest = substr($subquestions,0,$subans_length);
 6435:                 $subquestions   = substr($subquestions,$subans_length);
 6436:                 $quest_id = "$questnum.$subquestnum";
 6437:                 if (($$scantron_config{'Qon'} eq 'letter') ||
 6438:                     ($$scantron_config{'Qon'} eq 'number')) {
 6439:                     $ansnum = &scantron_validator_lettnum($ansnum, 
 6440:                         $questnum,$quest_id,$subans,$currsubquest,$whichline,
 6441:                         \@alphabet,\%record,$scantron_config,$scan_data,
 6442:                         $randomorder,$randompick,$respnumlookup);
 6443:                 } else {
 6444:                     $ansnum = &scantron_validator_positional($ansnum,
 6445:                         $questnum,$quest_id,$subans,$currsubquest,$whichline,
 6446:                         \@alphabet,\%record,$scantron_config,$scan_data,
 6447:                         $randomorder,$randompick,$respnumlookup);
 6448:                 }
 6449:                 $subquestnum ++;
 6450:             }
 6451:         } else {
 6452:             if (($$scantron_config{'Qon'} eq 'letter') ||
 6453:                 ($$scantron_config{'Qon'} eq 'number')) {
 6454:                 $ansnum = &scantron_validator_lettnum($ansnum,$questnum,
 6455:                     $quest_id,$answers_needed,$currentquest,$whichline,
 6456:                     \@alphabet,\%record,$scantron_config,$scan_data,
 6457:                     $randomorder,$randompick,$respnumlookup);
 6458:             } else {
 6459:                 $ansnum = &scantron_validator_positional($ansnum,$questnum,
 6460:                     $quest_id,$answers_needed,$currentquest,$whichline,
 6461:                     \@alphabet,\%record,$scantron_config,$scan_data,
 6462:                     $randomorder,$randompick,$respnumlookup);
 6463:             }
 6464:         }
 6465:     }
 6466:     $record{'scantron.maxquest'}=$questnum;
 6467:     return \%record;
 6468: }
 6469: 
 6470: sub get_master_seq {
 6471:     my ($resources,$master_seq,$symb_to_resource) = @_;
 6472:     return unless ((ref($resources) eq 'ARRAY') && (ref($master_seq) eq 'ARRAY') && 
 6473:                    (ref($symb_to_resource) eq 'HASH'));
 6474:     my $resource_error;
 6475:     foreach my $resource (@{$resources}) {
 6476:         my $ressymb;
 6477:         if (ref($resource)) {
 6478:             $ressymb = $resource->symb();
 6479:             push(@{$master_seq},$ressymb);
 6480:             $symb_to_resource->{$ressymb} = $resource;
 6481:         } else {
 6482:             $resource_error = 1;
 6483:             last;
 6484:         }
 6485:     }
 6486:     return $resource_error;
 6487: }
 6488: 
 6489: sub get_respnum_lookups {
 6490:     my ($sequence,$scan_data,$idmap,$line,$record,$master_seq,$symb_to_resource,
 6491:         $partids_by_symb,$orderedforcode,$respnumlookup,$startline) = @_;
 6492:     return unless ((ref($record) eq 'HASH') && (ref($master_seq) eq 'ARRAY') &&
 6493:                    (ref($symb_to_resource) eq 'HASH') && (ref($partids_by_symb) eq 'HASH') &&
 6494:                    (ref($orderedforcode) eq 'HASH') && (ref($respnumlookup) eq 'HASH') &&
 6495:                    (ref($startline) eq 'HASH'));
 6496:     my ($user,$scancode);
 6497:     if ((exists($record->{'scantron.CODE'})) &&
 6498:         (&Apache::lonnet::validCODE($record->{'scantron.CODE'}))) {
 6499:         $scancode = $record->{'scantron.CODE'};
 6500:     } else {
 6501:         $user = &scantron_find_student($record,$scan_data,$idmap,$line);
 6502:     }
 6503:     my @mapresources =
 6504:         &users_order($user,$scancode,$sequence,$master_seq,$symb_to_resource,
 6505:                      $orderedforcode);
 6506:     my $total = 0;
 6507:     my $count = 0;
 6508:     foreach my $resource (@mapresources) {
 6509:         my $id = $resource->id();
 6510:         my $symb = $resource->symb();
 6511:         if (ref($partids_by_symb->{$symb}) eq 'ARRAY') {
 6512:             foreach my $partid (@{$partids_by_symb->{$symb}}) {
 6513:                 my $respnum = $masterseq_id_responsenum{$id.'_'.$partid};
 6514:                 if ($respnum ne '') {
 6515:                     $respnumlookup->{$count} = $respnum;
 6516:                     $startline->{$count} = $total;
 6517:                     $total += $bubble_lines_per_response{$respnum};
 6518:                     $count ++;
 6519:                 }
 6520:             }
 6521:         }
 6522:     }
 6523:     return $total;
 6524: }
 6525: 
 6526: sub scantron_validator_lettnum {
 6527:     my ($ansnum,$questnum,$quest_id,$answers_needed,$currquest,$whichline,
 6528:         $alphabet,$record,$scantron_config,$scan_data,$randomorder,
 6529:         $randompick,$respnumlookup) = @_;
 6530: 
 6531:     # Qon 'letter' implies for each slot in currquest we have:
 6532:     #    ? or * for doubles, a letter in A-Z for a bubble, and
 6533:     #    about anything else (esp. a value of Qoff) for missing
 6534:     #    bubbles.
 6535:     #
 6536:     # Qon 'number' implies each slot gives a digit that indexes the
 6537:     #    bubbles filled, or Qoff, or a non-number for unbubbled lines,
 6538:     #    and * or ? for double bubbles on a single line.
 6539:     #
 6540: 
 6541:     my $matchon;
 6542:     if ($$scantron_config{'Qon'} eq 'letter') {
 6543:         $matchon = '[A-Z]';
 6544:     } elsif ($$scantron_config{'Qon'} eq 'number') {
 6545:         $matchon = '\d';
 6546:     }
 6547:     my $occurrences = 0;
 6548:     my $responsenum = $questnum-1;
 6549:     if (($randompick || $randomorder) && (ref($respnumlookup) eq 'HASH')) {
 6550:        $responsenum = $respnumlookup->{$questnum-1} 
 6551:     }
 6552:     if (($responsetype_per_response{$responsenum} eq 'essayresponse') ||
 6553:         ($responsetype_per_response{$responsenum} eq 'formularesponse') ||
 6554:         ($responsetype_per_response{$responsenum} eq 'stringresponse') ||
 6555:         ($responsetype_per_response{$responsenum} eq 'imageresponse') ||
 6556:         ($responsetype_per_response{$responsenum} eq 'reactionresponse') ||
 6557:         ($responsetype_per_response{$responsenum} eq 'organicresponse')) {
 6558:         my @singlelines = split('',$currquest);
 6559:         foreach my $entry (@singlelines) {
 6560:             $occurrences = &occurence_count($entry,$matchon);
 6561:             if ($occurrences > 1) {
 6562:                 last;
 6563:             }
 6564:         }
 6565:     } else {
 6566:         $occurrences = &occurence_count($currquest,$matchon); 
 6567:     }
 6568:     if (($currquest =~ /\?/ || $currquest =~ /\*/) || ($occurrences > 1)) {
 6569:         push(@{$record->{'scantron.doubleerror'}},$quest_id);
 6570:         for (my $ans=0; $ans<$answers_needed; $ans++) {
 6571:             my $bubble = substr($currquest,$ans,1);
 6572:             if ($bubble =~ /$matchon/ ) {
 6573:                 if ($$scantron_config{'Qon'} eq 'number') {
 6574:                     if ($bubble == 0) {
 6575:                         $bubble = 10; 
 6576:                     }
 6577:                     $record->{"scantron.$ansnum.answer"} = 
 6578:                         $alphabet->[$bubble-1];
 6579:                 } else {
 6580:                     $record->{"scantron.$ansnum.answer"} = $bubble;
 6581:                 }
 6582:             } else {
 6583:                 $record->{"scantron.$ansnum.answer"}='';
 6584:             }
 6585:             $ansnum++;
 6586:         }
 6587:     } elsif (!defined($currquest)
 6588:             || (&occurence_count($currquest, $$scantron_config{'Qoff'}) == length($currquest))
 6589:             || (&occurence_count($currquest,$matchon) == 0)) {
 6590:         for (my $ans=0; $ans<$answers_needed; $ans++ ) {
 6591:             $record->{"scantron.$ansnum.answer"}='';
 6592:             $ansnum++;
 6593:         }
 6594:         if (!&scan_data($scan_data,"$whichline.no_bubble.$quest_id")) {
 6595:             push(@{$record->{'scantron.missingerror'}},$quest_id);
 6596:         }
 6597:     } else {
 6598:         if ($$scantron_config{'Qon'} eq 'number') {
 6599:             $currquest = &digits_to_letters($currquest);            
 6600:         }
 6601:         for (my $ans=0; $ans<$answers_needed; $ans++) {
 6602:             my $bubble = substr($currquest,$ans,1);
 6603:             $record->{"scantron.$ansnum.answer"} = $bubble;
 6604:             $ansnum++;
 6605:         }
 6606:     }
 6607:     return $ansnum;
 6608: }
 6609: 
 6610: sub scantron_validator_positional {
 6611:     my ($ansnum,$questnum,$quest_id,$answers_needed,$currquest,
 6612:         $whichline,$alphabet,$record,$scantron_config,$scan_data,
 6613:         $randomorder,$randompick,$respnumlookup) = @_;
 6614: 
 6615:     # Otherwise there's a positional notation;
 6616:     # each bubble line requires Qlength items, and there are filled in
 6617:     # bubbles for each case where there 'Qon' characters.
 6618:     #
 6619: 
 6620:     my @array=split($$scantron_config{'Qon'},$currquest,-1);
 6621: 
 6622:     # If the split only gives us one element.. the full length of the
 6623:     # answer string, no bubbles are filled in:
 6624: 
 6625:     if ($answers_needed eq '') {
 6626:         return;
 6627:     }
 6628: 
 6629:     if (length($array[0]) eq $$scantron_config{'Qlength'}*$answers_needed) {
 6630:         for (my $ans=0; $ans<$answers_needed; $ans++ ) {
 6631:             $record->{"scantron.$ansnum.answer"}='';
 6632:             $ansnum++;
 6633:         }
 6634:         if (!&scan_data($scan_data,"$whichline.no_bubble.$quest_id")) {
 6635:             push(@{$record->{"scantron.missingerror"}},$quest_id);
 6636:         }
 6637:     } elsif (scalar(@array) == 2) {
 6638:         my $location = length($array[0]);
 6639:         my $line_num = int($location / $$scantron_config{'Qlength'});
 6640:         my $bubble   = $alphabet->[$location % $$scantron_config{'Qlength'}];
 6641:         for (my $ans=0; $ans<$answers_needed; $ans++) {
 6642:             if ($ans eq $line_num) {
 6643:                 $record->{"scantron.$ansnum.answer"} = $bubble;
 6644:             } else {
 6645:                 $record->{"scantron.$ansnum.answer"} = ' ';
 6646:             }
 6647:             $ansnum++;
 6648:          }
 6649:     } else {
 6650:         #  If there's more than one instance of a bubble character
 6651:         #  That's a double bubble; with positional notation we can
 6652:         #  record all the bubbles filled in as well as the
 6653:         #  fact this response consists of multiple bubbles.
 6654:         #
 6655:         my $responsenum = $questnum-1;
 6656:         if (($randompick || $randomorder) && (ref($respnumlookup) eq 'HASH')) {
 6657:             $responsenum = $respnumlookup->{$questnum-1}
 6658:         }
 6659:         if (($responsetype_per_response{$responsenum} eq 'essayresponse') ||
 6660:             ($responsetype_per_response{$responsenum} eq 'formularesponse') ||
 6661:             ($responsetype_per_response{$responsenum} eq 'stringresponse') ||
 6662:             ($responsetype_per_response{$responsenum} eq 'imageresponse') ||
 6663:             ($responsetype_per_response{$responsenum} eq 'reactionresponse') ||
 6664:             ($responsetype_per_response{$responsenum} eq 'organicresponse')) {
 6665:             my $doubleerror = 0;
 6666:             while (($currquest >= $$scantron_config{'Qlength'}) && 
 6667:                    (!$doubleerror)) {
 6668:                my $currline = substr($currquest,0,$$scantron_config{'Qlength'});
 6669:                $currquest = substr($currquest,$$scantron_config{'Qlength'});
 6670:                my @currarray = split($$scantron_config{'Qon'},$currline,-1);
 6671:                if (length(@currarray) > 2) {
 6672:                    $doubleerror = 1;
 6673:                } 
 6674:             }
 6675:             if ($doubleerror) {
 6676:                 push(@{$record->{'scantron.doubleerror'}},$quest_id);
 6677:             }
 6678:         } else {
 6679:             push(@{$record->{'scantron.doubleerror'}},$quest_id);
 6680:         }
 6681:         my $item = $ansnum;
 6682:         for (my $ans=0; $ans<$answers_needed; $ans++) {
 6683:             $record->{"scantron.$item.answer"} = '';
 6684:             $item ++;
 6685:         }
 6686: 
 6687:         my @ans=@array;
 6688:         my $i=0;
 6689:         my $increment = 0;
 6690:         while ($#ans) {
 6691:             $i+=length($ans[0]) + $increment;
 6692:             my $line   = int($i/$$scantron_config{'Qlength'} + $ansnum);
 6693:             my $bubble = $i%$$scantron_config{'Qlength'};
 6694:             $record->{"scantron.$line.answer"}.=$alphabet->[$bubble];
 6695:             shift(@ans);
 6696:             $increment = 1;
 6697:         }
 6698:         $ansnum += $answers_needed;
 6699:     }
 6700:     return $ansnum;
 6701: }
 6702: 
 6703: =pod
 6704: 
 6705: =item scantron_add_delay
 6706: 
 6707:    Adds an error message that occurred during the grading phase to a
 6708:    queue of messages to be shown after grading pass is complete
 6709: 
 6710:  Arguments:
 6711:    $delayqueue  - arrary ref of hash ref of error messages
 6712:    $scanline    - the scanline that caused the error
 6713:    $errormesage - the error message
 6714:    $errorcode   - a numeric code for the error
 6715: 
 6716:  Side Effects:
 6717:    updates the $delayqueue to have a new hash ref of the error
 6718: 
 6719: =cut
 6720: 
 6721: sub scantron_add_delay {
 6722:     my ($delayqueue,$scanline,$errormessage,$errorcode)=@_;
 6723:     push(@$delayqueue,
 6724: 	 {'line' => $scanline, 'emsg' => $errormessage,
 6725: 	  'ecode' => $errorcode }
 6726: 	 );
 6727: }
 6728: 
 6729: =pod
 6730: 
 6731: =item scantron_find_student
 6732: 
 6733:    Finds the username for the current scanline
 6734: 
 6735:   Arguments:
 6736:    $scantron_record - hash result from scantron_parse_scanline
 6737:    $scan_data       - hash of correction information 
 6738:                       (see &scantron_getfile() form more information)
 6739:    $idmap           - hash from &username_to_idmap()
 6740:    $line            - number of current scanline
 6741:  
 6742:   Returns:
 6743:    Either 'username:domain' or undef if unknown
 6744: 
 6745: =cut
 6746: 
 6747: sub scantron_find_student {
 6748:     my ($scantron_record,$scan_data,$idmap,$line)=@_;
 6749:     my $scanID=$$scantron_record{'scantron.ID'};
 6750:     if ($scanID =~ /^\s*$/) {
 6751:  	return &scan_data($scan_data,"$line.user");
 6752:     }
 6753:     foreach my $id (keys(%$idmap)) {
 6754:  	if (lc($id) eq lc($scanID)) {
 6755:  	    return $$idmap{$id};
 6756:  	}
 6757:     }
 6758:     return undef;
 6759: }
 6760: 
 6761: =pod
 6762: 
 6763: =item scantron_filter
 6764: 
 6765:    Filter sub for lonnavmaps, filters out hidden resources if ignore
 6766:    hidden resources was selected
 6767: 
 6768: =cut
 6769: 
 6770: sub scantron_filter {
 6771:     my ($curres)=@_;
 6772: 
 6773:     if (ref($curres) && $curres->is_problem()) {
 6774: 	# if the user has asked to not have either hidden
 6775: 	# or 'randomout' controlled resources to be graded
 6776: 	# don't include them
 6777: 	if ($env{'form.scantron_options_hidden'} eq 'ignore_hidden'
 6778: 	    && $curres->randomout) {
 6779: 	    return 0;
 6780: 	}
 6781: 	return 1;
 6782:     }
 6783:     return 0;
 6784: }
 6785: 
 6786: =pod
 6787: 
 6788: =item scantron_process_corrections
 6789: 
 6790:    Gets correction information out of submitted form data and corrects
 6791:    the scanline
 6792: 
 6793: =cut
 6794: 
 6795: sub scantron_process_corrections {
 6796:     my ($r) = @_;
 6797:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 6798:     my ($scanlines,$scan_data)=&scantron_getfile();
 6799:     my $classlist=&Apache::loncoursedata::get_classlist();
 6800:     my $which=$env{'form.scantron_line'};
 6801:     my $line=&scantron_get_line($scanlines,$scan_data,$which);
 6802:     my ($skip,$err,$errmsg);
 6803:     if ($env{'form.scantron_skip_record'}) {
 6804: 	$skip=1;
 6805:     } elsif ($env{'form.scantron_corrections'} =~ /^(duplicate|incorrect)ID$/) {
 6806: 	my $newstudent=$env{'form.scantron_username'}.':'.
 6807: 	    $env{'form.scantron_domain'};
 6808: 	my $newid=$classlist->{$newstudent}->[&Apache::loncoursedata::CL_ID];
 6809: 	($line,$err,$errmsg)=
 6810: 	    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
 6811: 				     'ID',{'newid'=>$newid,
 6812: 				    'username'=>$env{'form.scantron_username'},
 6813: 				    'domain'=>$env{'form.scantron_domain'}});
 6814:     } elsif ($env{'form.scantron_corrections'} =~ /^(duplicate|incorrect)CODE$/) {
 6815: 	my $resolution=$env{'form.scantron_CODE_resolution'};
 6816: 	my $newCODE;
 6817: 	my %args;
 6818: 	if      ($resolution eq 'use_unfound') {
 6819: 	    $newCODE='use_unfound';
 6820: 	} elsif ($resolution eq 'use_found') {
 6821: 	    $newCODE=$env{'form.scantron_CODE_selectedvalue'};
 6822: 	} elsif ($resolution eq 'use_typed') {
 6823: 	    $newCODE=$env{'form.scantron_CODE_newvalue'};
 6824: 	} elsif ($resolution =~ /^use_closest_(\d+)/) {
 6825: 	    $newCODE=$env{"form.scantron_CODE_closest_$1"};
 6826: 	}
 6827: 	if ($env{'form.scantron_corrections'} eq 'duplicateCODE') {
 6828: 	    $args{'CODE_ignore_dup'}=1;
 6829: 	}
 6830: 	$args{'CODE'}=$newCODE;
 6831: 	($line,$err,$errmsg)=
 6832: 	    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
 6833: 				     'CODE',\%args);
 6834:     } elsif ($env{'form.scantron_corrections'} =~ /^(missing|double)bubble$/) {
 6835: 	foreach my $question (split(',',$env{'form.scantron_questions'})) {
 6836: 	    ($line,$err,$errmsg)=
 6837: 		&scantron_fixup_scanline(\%scantron_config,$scan_data,$line,
 6838: 					 $which,'answer',
 6839: 					 { 'question'=>$question,
 6840: 		      		   'response'=>$env{"form.scantron_correct_Q_$question"},
 6841:                                    'questionnum'=>$env{"form.scantron_questionnum_Q_$question"}});
 6842: 	    if ($err) { last; }
 6843: 	}
 6844:     }
 6845:     if ($err) {
 6846:         $r->print(
 6847:             '<p class="LC_error">'
 6848:            .&mt('Unable to accept last correction, an error occurred: [_1]',
 6849:                 $errmsg)
 6850:            .'</p>');
 6851:     } else {
 6852: 	&scantron_put_line($scanlines,$scan_data,$which,$line,$skip);
 6853: 	&scantron_putfile($scanlines,$scan_data);
 6854:     }
 6855: }
 6856: 
 6857: =pod
 6858: 
 6859: =item reset_skipping_status
 6860: 
 6861:    Forgets the current set of remember skipped scanlines (and thus
 6862:    reverts back to considering all lines in the
 6863:    scantron_skipped_<filename> file)
 6864: 
 6865: =cut
 6866: 
 6867: sub reset_skipping_status {
 6868:     my ($scanlines,$scan_data)=&scantron_getfile();
 6869:     &scan_data($scan_data,'remember_skipping',undef,1);
 6870:     &scantron_putfile(undef,$scan_data);
 6871: }
 6872: 
 6873: =pod
 6874: 
 6875: =item start_skipping
 6876: 
 6877:    Marks a scanline to be skipped. 
 6878: 
 6879: =cut
 6880: 
 6881: sub start_skipping {
 6882:     my ($scan_data,$i)=@_;
 6883:     my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
 6884:     if ($env{'form.scantron_options_redo'} =~ /^redo_/) {
 6885: 	$remembered{$i}=2;
 6886:     } else {
 6887: 	$remembered{$i}=1;
 6888:     }
 6889:     &scan_data($scan_data,'remember_skipping',join(':',%remembered));
 6890: }
 6891: 
 6892: =pod
 6893: 
 6894: =item should_be_skipped
 6895: 
 6896:    Checks whether a scanline should be skipped.
 6897: 
 6898: =cut
 6899: 
 6900: sub should_be_skipped {
 6901:     my ($scanlines,$scan_data,$i)=@_;
 6902:     if ($env{'form.scantron_options_redo'} !~ /^redo_/) {
 6903: 	# not redoing old skips
 6904: 	if ($scanlines->{'skipped'}[$i]) { return 1; }
 6905: 	return 0;
 6906:     }
 6907:     my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
 6908: 
 6909:     if (exists($remembered{$i}) && $remembered{$i} != 2 ) {
 6910: 	return 0;
 6911:     }
 6912:     return 1;
 6913: }
 6914: 
 6915: =pod
 6916: 
 6917: =item remember_current_skipped
 6918: 
 6919:    Discovers what scanlines are in the scantron_skipped_<filename>
 6920:    file and remembers them into scan_data for later use.
 6921: 
 6922: =cut
 6923: 
 6924: sub remember_current_skipped {
 6925:     my ($scanlines,$scan_data)=&scantron_getfile();
 6926:     my %to_remember;
 6927:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 6928: 	if ($scanlines->{'skipped'}[$i]) {
 6929: 	    $to_remember{$i}=1;
 6930: 	}
 6931:     }
 6932: 
 6933:     &scan_data($scan_data,'remember_skipping',join(':',%to_remember));
 6934:     &scantron_putfile(undef,$scan_data);
 6935: }
 6936: 
 6937: =pod
 6938: 
 6939: =item check_for_error
 6940: 
 6941:     Checks if there was an error when attempting to remove a specific
 6942:     scantron_.. bubblesheet data file. Prints out an error if
 6943:     something went wrong.
 6944: 
 6945: =cut
 6946: 
 6947: sub check_for_error {
 6948:     my ($r,$result)=@_;
 6949:     if ($result ne 'ok' && $result ne 'not_found' ) {
 6950: 	$r->print(&mt("An error occurred ([_1]) when trying to remove the existing corrections.",$result));
 6951:     }
 6952: }
 6953: 
 6954: =pod
 6955: 
 6956: =item scantron_warning_screen
 6957: 
 6958:    Interstitial screen to make sure the operator has selected the
 6959:    correct options before we start the validation phase.
 6960: 
 6961: =cut
 6962: 
 6963: sub scantron_warning_screen {
 6964:     my ($button_text,$symb)=@_;
 6965:     my $title=&Apache::lonnet::gettitle($env{'form.selectpage'});
 6966:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 6967:     my $CODElist;
 6968:     if ($scantron_config{'CODElocation'} &&
 6969: 	$scantron_config{'CODEstart'} &&
 6970: 	$scantron_config{'CODElength'}) {
 6971: 	$CODElist=$env{'form.scantron_CODElist'};
 6972: 	if ($env{'form.scantron_CODElist'} eq '') { $CODElist='<span class="LC_warning">'.&mt('None').'</span>'; }
 6973: 	$CODElist=
 6974: 	    '<tr><td><b>'.&mt('List of CODES to validate against:').'</b></td><td><tt>'.
 6975: 	    $env{'form.scantron_CODElist'}.'</tt></td></tr>';
 6976:     }
 6977:     my $lastbubblepoints;
 6978:     if ($env{'form.scantron_lastbubblepoints'} ne '') {
 6979:         $lastbubblepoints =
 6980:             '<tr><td><b>'.&mt('Hand-graded items: points from last bubble in row').'</b></td><td><tt>'.
 6981:             $env{'form.scantron_lastbubblepoints'}.'</tt></td></tr>';
 6982:     }
 6983:     return ('
 6984: <p>
 6985: <span class="LC_warning">
 6986: '.&mt("Please double check the information below before clicking on '[_1]'",&mt($button_text)).'</span>
 6987: </p>
 6988: <table>
 6989: <tr><td><b>'.&mt('Sequence to be Graded:').'</b></td><td>'.$title.'</td></tr>
 6990: <tr><td><b>'.&mt('Data File that will be used:').'</b></td><td><tt>'.$env{'form.scantron_selectfile'}.'</tt></td></tr>
 6991: '.$CODElist.$lastbubblepoints.'
 6992: </table>
 6993: <p> '.&mt("If this information is correct, please click on '[_1]'.",&mt($button_text)).'<br />
 6994: '.&mt('If something is incorrect, please return to [_1]Grade/Manage/Review Bubblesheets[_2] to start over.','<a href="/adm/grades?symb='.$symb.'&command=scantron_selectphase" class="LC_info">','</a>').'</p>
 6995: 
 6996: <br />
 6997: ');
 6998: }
 6999: 
 7000: =pod
 7001: 
 7002: =item scantron_do_warning
 7003: 
 7004:    Check if the operator has picked something for all required
 7005:    fields. Error out if something is missing.
 7006: 
 7007: =cut
 7008: 
 7009: sub scantron_do_warning {
 7010:     my ($r,$symb)=@_;
 7011:     if (!$symb) {return '';}
 7012:     my $default_form_data=&defaultFormData($symb);
 7013:     $r->print(&scantron_form_start().$default_form_data);
 7014:     if ( $env{'form.selectpage'} eq '' ||
 7015: 	 $env{'form.scantron_selectfile'} eq '' ||
 7016: 	 $env{'form.scantron_format'} eq '' ) {
 7017: 	$r->print("<p>".&mt('You have forgotten to specify some information. Please go Back and try again.')."</p>");
 7018: 	if ( $env{'form.selectpage'} eq '') {
 7019: 	    $r->print('<p><span class="LC_error">'.&mt('You have not selected a Sequence to grade').'</span></p>');
 7020: 	} 
 7021: 	if ( $env{'form.scantron_selectfile'} eq '') {
 7022: 	    $r->print('<p><span class="LC_error">'.&mt("You have not selected a file that contains the student's response data.").'</span></p>');
 7023: 	} 
 7024: 	if ( $env{'form.scantron_format'} eq '') {
 7025: 	    $r->print('<p><span class="LC_error">'.&mt("You have not selected the format of the student's response data.").'</span></p>');
 7026: 	} 
 7027:     } else {
 7028: 	my $warning=&scantron_warning_screen('Grading: Validate Records',$symb);
 7029:         my $bubbledbyhand=&hand_bubble_option();
 7030: 	$r->print('
 7031: '.$warning.$bubbledbyhand.'
 7032: <input type="submit" name="submit" value="'.&mt('Grading: Validate Records').'" />
 7033: <input type="hidden" name="command" value="scantron_validate" />
 7034: ');
 7035:     }
 7036:     $r->print("</form><br />");
 7037:     return '';
 7038: }
 7039: 
 7040: =pod
 7041: 
 7042: =item scantron_form_start
 7043: 
 7044:     html hidden input for remembering all selected grading options
 7045: 
 7046: =cut
 7047: 
 7048: sub scantron_form_start {
 7049:     my ($max_bubble)=@_;
 7050:     my $result= <<SCANTRONFORM;
 7051: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
 7052:   <input type="hidden" name="selectpage" value="$env{'form.selectpage'}" />
 7053:   <input type="hidden" name="scantron_format" value="$env{'form.scantron_format'}" />
 7054:   <input type="hidden" name="scantron_selectfile" value="$env{'form.scantron_selectfile'}" />
 7055:   <input type="hidden" name="scantron_maxbubble" value="$max_bubble" />
 7056:   <input type="hidden" name="scantron_CODElist" value="$env{'form.scantron_CODElist'}" />
 7057:   <input type="hidden" name="scantron_CODEunique" value="$env{'form.scantron_CODEunique'}" />
 7058:   <input type="hidden" name="scantron_options_redo" value="$env{'form.scantron_options_redo'}" />
 7059:   <input type="hidden" name="scantron_options_ignore" value="$env{'form.scantron_options_ignore'}" />
 7060:   <input type="hidden" name="scantron_options_hidden" value="$env{'form.scantron_options_hidden'}" />
 7061: SCANTRONFORM
 7062: 
 7063:   my $line = 0;
 7064:     while (defined($env{"form.scantron.bubblelines.$line"})) {
 7065:        my $chunk =
 7066: 	   '<input type="hidden" name="scantron.bubblelines.'.$line.'" value="'.$env{"form.scantron.bubblelines.$line"}.'" />'."\n";
 7067:        $chunk .=
 7068: 	   '<input type="hidden" name="scantron.first_bubble_line.'.$line.'" value="'.$env{"form.scantron.first_bubble_line.$line"}.'" />'."\n";
 7069:        $chunk .= 
 7070:            '<input type="hidden" name="scantron.sub_bubblelines.'.$line.'" value="'.$env{"form.scantron.sub_bubblelines.$line"}.'" />'."\n";
 7071:        $chunk .=
 7072:            '<input type="hidden" name="scantron.responsetype.'.$line.'" value="'.$env{"form.scantron.responsetype.$line"}.'" />'."\n";
 7073:        $chunk .=
 7074:            '<input type="hidden" name="scantron.residpart.'.$line.'" value="'.$env{"form.scantron.residpart.$line"}.'" />'."\n";
 7075:        $result .= $chunk;
 7076:        $line++;
 7077:     }
 7078:     return $result;
 7079: }
 7080: 
 7081: =pod
 7082: 
 7083: =item scantron_validate_file
 7084: 
 7085:     Dispatch routine for doing validation of a bubblesheet data file.
 7086: 
 7087:     Also processes any necessary information resets that need to
 7088:     occur before validation begins (ignore previous corrections,
 7089:     restarting the skipped records processing)
 7090: 
 7091: =cut
 7092: 
 7093: sub scantron_validate_file {
 7094:     my ($r,$symb) = @_;
 7095:     if (!$symb) {return '';}
 7096:     my $default_form_data=&defaultFormData($symb);
 7097:     
 7098:     # do the detection of only doing skipped records first before we delete
 7099:     # them when doing the corrections reset
 7100:     if ($env{'form.scantron_options_redo'} ne 'redo_skipped_ready') {
 7101: 	&reset_skipping_status();
 7102:     }
 7103:     if ($env{'form.scantron_options_redo'} eq 'redo_skipped') {
 7104: 	&remember_current_skipped();
 7105: 	$env{'form.scantron_options_redo'}='redo_skipped_ready';
 7106:     }
 7107: 
 7108:     if ($env{'form.scantron_options_ignore'} eq 'ignore_corrections') {
 7109: 	&check_for_error($r,&scantron_remove_file('corrected'));
 7110: 	&check_for_error($r,&scantron_remove_file('skipped'));
 7111: 	&check_for_error($r,&scantron_remove_scan_data());
 7112: 	$env{'form.scantron_options_ignore'}='done';
 7113:     }
 7114: 
 7115:     if ($env{'form.scantron_corrections'}) {
 7116: 	&scantron_process_corrections($r);
 7117:     }
 7118:     $r->print('<p>'.&mt('Gathering necessary information.').'</p>');$r->rflush();
 7119:     #get the student pick code ready
 7120:     $r->print(&Apache::loncommon::studentbrowser_javascript());
 7121:     my $nav_error;
 7122:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 7123:     my $max_bubble=&scantron_get_maxbubble(\$nav_error,\%scantron_config);
 7124:     if ($nav_error) {
 7125:         $r->print(&navmap_errormsg());
 7126:         return '';
 7127:     }
 7128:     my $result=&scantron_form_start($max_bubble).$default_form_data;
 7129:     if ($env{'form.scantron_lastbubblepoints'} ne '') {
 7130:         $result .= '<input type="hidden" name="scantron_lastbubblepoints" value="'.$env{'form.scantron_lastbubblepoints'}.'" />';
 7131:     }
 7132:     $r->print($result);
 7133:     
 7134:     my @validate_phases=( 'sequence',
 7135: 			  'ID',
 7136: 			  'CODE',
 7137: 			  'doublebubble',
 7138: 			  'missingbubbles');
 7139:     if (!$env{'form.validatepass'}) {
 7140: 	$env{'form.validatepass'} = 0;
 7141:     }
 7142:     my $currentphase=$env{'form.validatepass'};
 7143: 
 7144: 
 7145:     my $stop=0;
 7146:     while (!$stop && $currentphase < scalar(@validate_phases)) {
 7147: 	$r->print(&mt('Validating '.$validate_phases[$currentphase]).'<br />');
 7148: 	$r->rflush();
 7149:      
 7150: 	my $which="scantron_validate_".$validate_phases[$currentphase];
 7151: 	{
 7152: 	    no strict 'refs';
 7153: 	    ($stop,$currentphase)=&$which($r,$currentphase);
 7154: 	}
 7155:     }
 7156:     if (!$stop) {
 7157: 	my $warning=&scantron_warning_screen('Start Grading',$symb);
 7158: 	$r->print(&mt('Validation process complete.').'<br />'.
 7159:                   $warning.
 7160:                   &mt('Perform verification for each student after storage of submissions?').
 7161:                   '&nbsp;<span class="LC_nobreak"><label>'.
 7162:                   '<input type="radio" name="verifyrecord" value="1" />'.&mt('Yes').'</label>'.
 7163:                   ('&nbsp;'x3).'<label>'.
 7164:                   '<input type="radio" name="verifyrecord" value="0" checked="checked" />'.&mt('No').
 7165:                   '</label></span><br />'.
 7166:                   &mt('Grading will take longer if you use verification.').'<br />'.
 7167:                   &mt('Otherwise, Grade/Manage/Review Bubblesheets [_1] Review bubblesheet data can be used once grading is complete.','&raquo;').'<br /><br />'.
 7168:                   '<input type="submit" name="submit" value="'.&mt('Start Grading').'" />'.
 7169:                   '<input type="hidden" name="command" value="scantron_process" />'."\n");
 7170:     } else {
 7171: 	$r->print('<input type="hidden" name="command" value="scantron_validate" />');
 7172: 	$r->print("<input type='hidden' name='validatepass' value='".$currentphase."' />");
 7173:     }
 7174:     if ($stop) {
 7175: 	if ($validate_phases[$currentphase] eq 'sequence') {
 7176: 	    $r->print('<input type="submit" name="submit" value="'.&mt('Ignore').' &rarr; " />');
 7177: 	    $r->print(' '.&mt('this error').' <br />');
 7178: 
 7179: 	    $r->print('<p>'.&mt('Or return to [_1]Grade/Manage/Review Bubblesheets[_2] to start over.','<a href="/adm/grades?symb='.$symb.'&command=scantron_selectphase" class="LC_info">','</a>').'</p>');
 7180: 	} else {
 7181:             if ($validate_phases[$currentphase] eq 'doublebubble' || $validate_phases[$currentphase] eq 'missingbubbles') {
 7182: 	        $r->print('<input type="button" name="submitbutton" value="'.&mt('Continue').' &rarr;" onclick="javascript:verify_bubble_radio(this.form)" />');
 7183:             } else {
 7184:                 $r->print('<input type="submit" name="submit" value="'.&mt('Continue').' &rarr;" />');
 7185:             }
 7186: 	    $r->print(' '.&mt('using corrected info').' <br />');
 7187: 	    $r->print("<input type='submit' value='".&mt("Skip")."' name='scantron_skip_record' />");
 7188: 	    $r->print(" ".&mt("this scanline saving it for later."));
 7189: 	}
 7190:     }
 7191:     $r->print(" </form><br />");
 7192:     return '';
 7193: }
 7194: 
 7195: 
 7196: =pod
 7197: 
 7198: =item scantron_remove_file
 7199: 
 7200:    Removes the requested bubblesheet data file, makes sure that
 7201:    scantron_original_<filename> is never removed
 7202: 
 7203: 
 7204: =cut
 7205: 
 7206: sub scantron_remove_file {
 7207:     my ($which)=@_;
 7208:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 7209:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 7210:     my $file='scantron_';
 7211:     if ($which eq 'corrected' || $which eq 'skipped') {
 7212: 	$file.=$which.'_';
 7213:     } else {
 7214: 	return 'refused';
 7215:     }
 7216:     $file.=$env{'form.scantron_selectfile'};
 7217:     return &Apache::lonnet::removeuserfile($cname,$cdom,$file);
 7218: }
 7219: 
 7220: 
 7221: =pod
 7222: 
 7223: =item scantron_remove_scan_data
 7224: 
 7225:    Removes all scan_data correction for the requested bubblesheet
 7226:    data file.  (In the case that both the are doing skipped records we need
 7227:    to remember the old skipped lines for the time being so that element
 7228:    persists for a while.)
 7229: 
 7230: =cut
 7231: 
 7232: sub scantron_remove_scan_data {
 7233:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 7234:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 7235:     my @keys=&Apache::lonnet::getkeys('nohist_scantrondata',$cdom,$cname);
 7236:     my @todelete;
 7237:     my $filename=$env{'form.scantron_selectfile'};
 7238:     foreach my $key (@keys) {
 7239: 	if ($key=~/^\Q$filename\E_/) {
 7240: 	    if ($env{'form.scantron_options_redo'} eq 'redo_skipped_ready' &&
 7241: 		$key=~/remember_skipping/) {
 7242: 		next;
 7243: 	    }
 7244: 	    push(@todelete,$key);
 7245: 	}
 7246:     }
 7247:     my $result;
 7248:     if (@todelete) {
 7249: 	$result = &Apache::lonnet::del('nohist_scantrondata',
 7250: 				       \@todelete,$cdom,$cname);
 7251:     } else {
 7252: 	$result = 'ok';
 7253:     }
 7254:     return $result;
 7255: }
 7256: 
 7257: 
 7258: =pod
 7259: 
 7260: =item scantron_getfile
 7261: 
 7262:     Fetches the requested bubblesheet data file (all 3 versions), and
 7263:     the scan_data hash
 7264:   
 7265:   Arguments:
 7266:     None
 7267: 
 7268:   Returns:
 7269:     2 hash references
 7270: 
 7271:      - first one has 
 7272:          orig      -
 7273:          corrected -
 7274:          skipped   -  each of which points to an array ref of the specified
 7275:                       file broken up into individual lines
 7276:          count     - number of scanlines
 7277:  
 7278:      - second is the scan_data hash possible keys are
 7279:        ($number refers to scanline numbered $number and thus the key affects
 7280:         only that scanline
 7281:         $bubline refers to the specific bubble line element and the aspects
 7282:         refers to that specific bubble line element)
 7283: 
 7284:        $number.user - username:domain to use
 7285:        $number.CODE_ignore_dup 
 7286:                     - ignore the duplicate CODE error 
 7287:        $number.useCODE
 7288:                     - use the CODE in the scanline as is
 7289:        $number.no_bubble.$bubline
 7290:                     - it is valid that there is no bubbled in bubble
 7291:                       at $number $bubline
 7292:        remember_skipping
 7293:                     - a frozen hash containing keys of $number and values
 7294:                       of either 
 7295:                         1 - we are on a 'do skipped records pass' and plan
 7296:                             on processing this line
 7297:                         2 - we are on a 'do skipped records pass' and this
 7298:                             scanline has been marked to skip yet again
 7299: 
 7300: =cut
 7301: 
 7302: sub scantron_getfile {
 7303:     #FIXME really would prefer a scantron directory
 7304:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 7305:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 7306:     my $lines;
 7307:     $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
 7308: 		       'scantron_orig_'.$env{'form.scantron_selectfile'});
 7309:     my %scanlines;
 7310:     $scanlines{'orig'}=[(split("\n",$lines,-1))];
 7311:     my $temp=$scanlines{'orig'};
 7312:     $scanlines{'count'}=$#$temp;
 7313: 
 7314:     $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
 7315: 		       'scantron_corrected_'.$env{'form.scantron_selectfile'});
 7316:     if ($lines eq '-1') {
 7317: 	$scanlines{'corrected'}=[];
 7318:     } else {
 7319: 	$scanlines{'corrected'}=[(split("\n",$lines,-1))];
 7320:     }
 7321:     $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
 7322: 		       'scantron_skipped_'.$env{'form.scantron_selectfile'});
 7323:     if ($lines eq '-1') {
 7324: 	$scanlines{'skipped'}=[];
 7325:     } else {
 7326: 	$scanlines{'skipped'}=[(split("\n",$lines,-1))];
 7327:     }
 7328:     my @tmp=&Apache::lonnet::dump('nohist_scantrondata',$cdom,$cname);
 7329:     if ($tmp[0] =~ /^(error:|no_such_host)/) { @tmp=(); }
 7330:     my %scan_data = @tmp;
 7331:     return (\%scanlines,\%scan_data);
 7332: }
 7333: 
 7334: =pod
 7335: 
 7336: =item lonnet_putfile
 7337: 
 7338:    Wrapper routine to call &Apache::lonnet::finishuserfileupload
 7339: 
 7340:  Arguments:
 7341:    $contents - data to store
 7342:    $filename - filename to store $contents into
 7343: 
 7344:  Returns:
 7345:    result value from &Apache::lonnet::finishuserfileupload
 7346: 
 7347: =cut
 7348: 
 7349: sub lonnet_putfile {
 7350:     my ($contents,$filename)=@_;
 7351:     my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
 7352:     my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 7353:     $env{'form.sillywaytopassafilearound'}=$contents;
 7354:     &Apache::lonnet::finishuserfileupload($docuname,$docudom,'sillywaytopassafilearound',$filename);
 7355: 
 7356: }
 7357: 
 7358: =pod
 7359: 
 7360: =item scantron_putfile
 7361: 
 7362:     Stores the current version of the bubblesheet data files, and the
 7363:     scan_data hash. (Does not modify the original version only the
 7364:     corrected and skipped versions.
 7365: 
 7366:  Arguments:
 7367:     $scanlines - hash ref that looks like the first return value from
 7368:                  &scantron_getfile()
 7369:     $scan_data - hash ref that looks like the second return value from
 7370:                  &scantron_getfile()
 7371: 
 7372: =cut
 7373: 
 7374: sub scantron_putfile {
 7375:     my ($scanlines,$scan_data) = @_;
 7376:     #FIXME really would prefer a scantron directory
 7377:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 7378:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 7379:     if ($scanlines) {
 7380: 	my $prefix='scantron_';
 7381: # no need to update orig, shouldn't change
 7382: #   &lonnet_putfile(join("\n",@{$scanlines->{'orig'}}),$prefix.'orig_'.
 7383: #		    $env{'form.scantron_selectfile'});
 7384: 	&lonnet_putfile(join("\n",@{$scanlines->{'corrected'}}),
 7385: 			$prefix.'corrected_'.
 7386: 			$env{'form.scantron_selectfile'});
 7387: 	&lonnet_putfile(join("\n",@{$scanlines->{'skipped'}}),
 7388: 			$prefix.'skipped_'.
 7389: 			$env{'form.scantron_selectfile'});
 7390:     }
 7391:     &Apache::lonnet::put('nohist_scantrondata',$scan_data,$cdom,$cname);
 7392: }
 7393: 
 7394: =pod
 7395: 
 7396: =item scantron_get_line
 7397: 
 7398:    Returns the correct version of the scanline
 7399: 
 7400:  Arguments:
 7401:     $scanlines - hash ref that looks like the first return value from
 7402:                  &scantron_getfile()
 7403:     $scan_data - hash ref that looks like the second return value from
 7404:                  &scantron_getfile()
 7405:     $i         - number of the requested line (starts at 0)
 7406: 
 7407:  Returns:
 7408:    A scanline, (either the original or the corrected one if it
 7409:    exists), or undef if the requested scanline should be
 7410:    skipped. (Either because it's an skipped scanline, or it's an
 7411:    unskipped scanline and we are not doing a 'do skipped scanlines'
 7412:    pass.
 7413: 
 7414: =cut
 7415: 
 7416: sub scantron_get_line {
 7417:     my ($scanlines,$scan_data,$i)=@_;
 7418:     if (&should_be_skipped($scanlines,$scan_data,$i)) { return undef; }
 7419:     #if ($scanlines->{'skipped'}[$i]) { return undef; }
 7420:     if ($scanlines->{'corrected'}[$i]) {return $scanlines->{'corrected'}[$i];}
 7421:     return $scanlines->{'orig'}[$i]; 
 7422: }
 7423: 
 7424: =pod
 7425: 
 7426: =item scantron_todo_count
 7427: 
 7428:     Counts the number of scanlines that need processing.
 7429: 
 7430:  Arguments:
 7431:     $scanlines - hash ref that looks like the first return value from
 7432:                  &scantron_getfile()
 7433:     $scan_data - hash ref that looks like the second return value from
 7434:                  &scantron_getfile()
 7435: 
 7436:  Returns:
 7437:     $count - number of scanlines to process
 7438: 
 7439: =cut
 7440: 
 7441: sub get_todo_count {
 7442:     my ($scanlines,$scan_data)=@_;
 7443:     my $count=0;
 7444:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 7445: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 7446: 	if ($line=~/^[\s\cz]*$/) { next; }
 7447: 	$count++;
 7448:     }
 7449:     return $count;
 7450: }
 7451: 
 7452: =pod
 7453: 
 7454: =item scantron_put_line
 7455: 
 7456:     Updates the 'corrected' or 'skipped' versions of the bubblesheet
 7457:     data file.
 7458: 
 7459:  Arguments:
 7460:     $scanlines - hash ref that looks like the first return value from
 7461:                  &scantron_getfile()
 7462:     $scan_data - hash ref that looks like the second return value from
 7463:                  &scantron_getfile()
 7464:     $i         - line number to update
 7465:     $newline   - contents of the updated scanline
 7466:     $skip      - if true make the line for skipping and update the
 7467:                  'skipped' file
 7468: 
 7469: =cut
 7470: 
 7471: sub scantron_put_line {
 7472:     my ($scanlines,$scan_data,$i,$newline,$skip)=@_;
 7473:     if ($skip) {
 7474: 	$scanlines->{'skipped'}[$i]=$newline;
 7475: 	&start_skipping($scan_data,$i);
 7476: 	return;
 7477:     }
 7478:     $scanlines->{'corrected'}[$i]=$newline;
 7479: }
 7480: 
 7481: =pod
 7482: 
 7483: =item scantron_clear_skip
 7484: 
 7485:    Remove a line from the 'skipped' file
 7486: 
 7487:  Arguments:
 7488:     $scanlines - hash ref that looks like the first return value from
 7489:                  &scantron_getfile()
 7490:     $scan_data - hash ref that looks like the second return value from
 7491:                  &scantron_getfile()
 7492:     $i         - line number to update
 7493: 
 7494: =cut
 7495: 
 7496: sub scantron_clear_skip {
 7497:     my ($scanlines,$scan_data,$i)=@_;
 7498:     if (exists($scanlines->{'skipped'}[$i])) {
 7499: 	undef($scanlines->{'skipped'}[$i]);
 7500: 	return 1;
 7501:     }
 7502:     return 0;
 7503: }
 7504: 
 7505: =pod
 7506: 
 7507: =item scantron_filter_not_exam
 7508: 
 7509:    Filter routine used by &Apache::lonnavmaps::retrieveResources(), to
 7510:    filter out resources that are not marked as 'exam' mode
 7511: 
 7512: =cut
 7513: 
 7514: sub scantron_filter_not_exam {
 7515:     my ($curres)=@_;
 7516:     
 7517:     if (ref($curres) && $curres->is_problem() && !$curres->is_exam()) {
 7518: 	# if the user has asked to not have either hidden
 7519: 	# or 'randomout' controlled resources to be graded
 7520: 	# don't include them
 7521: 	if ($env{'form.scantron_options_hidden'} eq 'ignore_hidden'
 7522: 	    && $curres->randomout) {
 7523: 	    return 0;
 7524: 	}
 7525: 	return 1;
 7526:     }
 7527:     return 0;
 7528: }
 7529: 
 7530: =pod
 7531: 
 7532: =item scantron_validate_sequence
 7533: 
 7534:     Validates the selected sequence, checking for resource that are
 7535:     not set to exam mode.
 7536: 
 7537: =cut
 7538: 
 7539: sub scantron_validate_sequence {
 7540:     my ($r,$currentphase) = @_;
 7541: 
 7542:     my $navmap=Apache::lonnavmaps::navmap->new();
 7543:     unless (ref($navmap)) {
 7544:         $r->print(&navmap_errormsg());
 7545:         return (1,$currentphase);
 7546:     }
 7547:     my (undef,undef,$sequence)=
 7548: 	&Apache::lonnet::decode_symb($env{'form.selectpage'});
 7549: 
 7550:     my $map=$navmap->getResourceByUrl($sequence);
 7551: 
 7552:     $r->print('<input type="hidden" name="validate_sequence_exam"
 7553:                                     value="ignore" />');
 7554:     if ($env{'form.validate_sequence_exam'} ne 'ignore') {
 7555: 	my @resources=
 7556: 	    $navmap->retrieveResources($map,\&scantron_filter_not_exam,1,0);
 7557: 	if (@resources) {
 7558: 	    $r->print(
 7559:                 '<p class="LC_warning">'
 7560:                .&mt('Some resources in the sequence currently are not set to'
 7561:                    .' bubblesheet exam mode. Grading these resources currently may not'
 7562:                    .' work correctly.')
 7563:                .'</p>'
 7564:             );
 7565: 	    return (1,$currentphase);
 7566: 	}
 7567:     }
 7568: 
 7569:     return (0,$currentphase+1);
 7570: }
 7571: 
 7572: 
 7573: 
 7574: sub scantron_validate_ID {
 7575:     my ($r,$currentphase) = @_;
 7576:     
 7577:     #get student info
 7578:     my $classlist=&Apache::loncoursedata::get_classlist();
 7579:     my %idmap=&username_to_idmap($classlist);
 7580: 
 7581:     #get scantron line setup
 7582:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 7583:     my ($scanlines,$scan_data)=&scantron_getfile();
 7584: 
 7585:     my $nav_error;
 7586:     &scantron_get_maxbubble(\$nav_error,\%scantron_config); # parse needs the bubble_lines.. array.
 7587:     if ($nav_error) {
 7588:         $r->print(&navmap_errormsg());
 7589:         return(1,$currentphase);
 7590:     }
 7591: 
 7592:     my %found=('ids'=>{},'usernames'=>{});
 7593:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 7594: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 7595: 	if ($line=~/^[\s\cz]*$/) { next; }
 7596: 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 7597: 						 $scan_data);
 7598: 	my $id=$$scan_record{'scantron.ID'};
 7599: 	my $found;
 7600: 	foreach my $checkid (keys(%idmap)) {
 7601: 	    if (lc($checkid) eq lc($id)) { $found=$checkid;last; }
 7602: 	}
 7603: 	if ($found) {
 7604: 	    my $username=$idmap{$found};
 7605: 	    if ($found{'ids'}{$found}) {
 7606: 		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
 7607: 					 $line,'duplicateID',$found);
 7608: 		return(1,$currentphase);
 7609: 	    } elsif ($found{'usernames'}{$username}) {
 7610: 		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
 7611: 					 $line,'duplicateID',$username);
 7612: 		return(1,$currentphase);
 7613: 	    }
 7614: 	    #FIXME store away line we previously saw the ID on to use above
 7615: 	    $found{'ids'}{$found}++;
 7616: 	    $found{'usernames'}{$username}++;
 7617: 	} else {
 7618: 	    if ($id =~ /^\s*$/) {
 7619: 		my $username=&scan_data($scan_data,"$i.user");
 7620: 		if (defined($username) && $found{'usernames'}{$username}) {
 7621: 		    &scantron_get_correction($r,$i,$scan_record,
 7622: 					     \%scantron_config,
 7623: 					     $line,'duplicateID',$username);
 7624: 		    return(1,$currentphase);
 7625: 		} elsif (!defined($username)) {
 7626: 		    &scantron_get_correction($r,$i,$scan_record,
 7627: 					     \%scantron_config,
 7628: 					     $line,'incorrectID');
 7629: 		    return(1,$currentphase);
 7630: 		}
 7631: 		$found{'usernames'}{$username}++;
 7632: 	    } else {
 7633: 		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
 7634: 					 $line,'incorrectID');
 7635: 		return(1,$currentphase);
 7636: 	    }
 7637: 	}
 7638:     }
 7639: 
 7640:     return (0,$currentphase+1);
 7641: }
 7642: 
 7643: 
 7644: sub scantron_get_correction {
 7645:     my ($r,$i,$scan_record,$scan_config,$line,$error,$arg,
 7646:         $randomorder,$randompick,$respnumlookup,$startline)=@_;
 7647: #FIXME in the case of a duplicated ID the previous line, probably need
 7648: #to show both the current line and the previous one and allow skipping
 7649: #the previous one or the current one
 7650: 
 7651:     if ( $$scan_record{'scantron.PaperID'} =~ /\S/) {
 7652:         $r->print(
 7653:             '<p class="LC_warning">'
 7654:            .&mt('An error was detected ([_1]) for PaperID [_2]',
 7655:                 "<b>$error</b>",
 7656:                 '<tt>'.$$scan_record{'scantron.PaperID'}.'</tt>')
 7657:            ."</p> \n");
 7658:     } else {
 7659:         $r->print(
 7660:             '<p class="LC_warning">'
 7661:            .&mt('An error was detected ([_1]) in scanline [_2] [_3]',
 7662:                 "<b>$error</b>", $i, "<pre>$line</pre>")
 7663:            ."</p> \n");
 7664:     }
 7665:     my $message =
 7666:         '<p>'
 7667:        .&mt('The ID on the form is [_1]',
 7668:             "<tt>$$scan_record{'scantron.ID'}</tt>")
 7669:        .'<br />'
 7670:        .&mt('The name on the paper is [_1], [_2]',
 7671:             $$scan_record{'scantron.LastName'},
 7672:             $$scan_record{'scantron.FirstName'})
 7673:        .'</p>';
 7674: 
 7675:     $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
 7676:     $r->print('<input type="hidden" name="scantron_line" value="'.$i.'" />'."\n");
 7677:                            # Array populated for doublebubble or
 7678:     my @lines_to_correct;  # missingbubble errors to build javascript
 7679:                            # to validate radio button checking   
 7680: 
 7681:     if ($error =~ /ID$/) {
 7682: 	if ($error eq 'incorrectID') {
 7683:             $r->print('<p class="LC_warning">'.&mt("The encoded ID is not in the classlist").
 7684: 		      "</p>\n");
 7685: 	} elsif ($error eq 'duplicateID') {
 7686:             $r->print('<p class="LC_warning">'.&mt("The encoded ID has also been used by a previous paper [_1]",$arg)."</p>\n");
 7687: 	}
 7688: 	$r->print($message);
 7689: 	$r->print("<p>".&mt("How should I handle this?")." <br /> \n");
 7690: 	$r->print("\n<ul><li> ");
 7691: 	#FIXME it would be nice if this sent back the user ID and
 7692: 	#could do partial userID matches
 7693: 	$r->print(&Apache::loncommon::selectstudent_link('scantronupload',
 7694: 				       'scantron_username','scantron_domain'));
 7695: 	$r->print(": <input type='text' name='scantron_username' value='' />");
 7696: 	$r->print("\n:\n".
 7697: 		 &Apache::loncommon::select_dom_form($env{'request.role.domain'},'scantron_domain'));
 7698: 
 7699: 	$r->print('</li>');
 7700:     } elsif ($error =~ /CODE$/) {
 7701: 	if ($error eq 'incorrectCODE') {
 7702: 	    $r->print('<p class="LC_warning">'.&mt("The encoded CODE is not in the list of possible CODEs.")."</p>\n");
 7703: 	} elsif ($error eq 'duplicateCODE') {
 7704: 	    $r->print('<p class="LC_warning">'.&mt("The encoded CODE has also been used by a previous paper [_1], and CODEs are supposed to be unique.",join(', ',@{$arg}))."</p>\n");
 7705: 	}
 7706: 	$r->print("<p>".&mt('The CODE on the form is [_1]',
 7707: 			    "<tt>'$$scan_record{'scantron.CODE'}'</tt>")
 7708:                  ."</p>\n");
 7709: 	$r->print($message);
 7710: 	$r->print("<p>".&mt("How should I handle this?")."</p>\n");
 7711: 	$r->print("\n<br /> ");
 7712: 	my $i=0;
 7713: 	if ($error eq 'incorrectCODE' 
 7714: 	    && $$scan_record{'scantron.CODE'}=~/\S/ ) {
 7715: 	    my ($max,$closest)=&scantron_get_closely_matching_CODEs($arg,$$scan_record{'scantron.CODE'});
 7716: 	    if ($closest > 0) {
 7717: 		foreach my $testcode (@{$closest}) {
 7718: 		    my $checked='';
 7719: 		    if (!$i) { $checked=' checked="checked"'; }
 7720: 		    $r->print("
 7721:    <label>
 7722:        <input type='radio' name='scantron_CODE_resolution' value='use_closest_$i'$checked />
 7723:        ".&mt("Use the similar CODE [_1] instead.",
 7724: 	    "<b><tt>".$testcode."</tt></b>")."
 7725:     </label>
 7726:     <input type='hidden' name='scantron_CODE_closest_$i' value='$testcode' />");
 7727: 		    $r->print("\n<br />");
 7728: 		    $i++;
 7729: 		}
 7730: 	    }
 7731: 	}
 7732: 	if ($$scan_record{'scantron.CODE'}=~/\S/ ) {
 7733: 	    my $checked; if (!$i) { $checked=' checked="checked"'; }
 7734: 	    $r->print("
 7735:     <label>
 7736:         <input type='radio' name='scantron_CODE_resolution' value='use_unfound'$checked />
 7737:        ".&mt("Use the CODE [_1] that was on the paper, ignoring the error.",
 7738: 	     "<b><tt>".$$scan_record{'scantron.CODE'}."</tt></b>")."
 7739:     </label>");
 7740: 	    $r->print("\n<br />");
 7741: 	}
 7742: 
 7743: 	$r->print(&Apache::lonhtmlcommon::scripttag(<<ENDSCRIPT));
 7744: function change_radio(field) {
 7745:     var slct=document.scantronupload.scantron_CODE_resolution;
 7746:     var i;
 7747:     for (i=0;i<slct.length;i++) {
 7748:         if (slct[i].value==field) { slct[i].checked=true; }
 7749:     }
 7750: }
 7751: ENDSCRIPT
 7752: 	my $href="/adm/pickcode?".
 7753: 	   "form=".&escape("scantronupload").
 7754: 	   "&scantron_format=".&escape($env{'form.scantron_format'}).
 7755: 	   "&scantron_CODElist=".&escape($env{'form.scantron_CODElist'}).
 7756: 	   "&curCODE=".&escape($$scan_record{'scantron.CODE'}).
 7757: 	   "&scantron_selectfile=".&escape($env{'form.scantron_selectfile'});
 7758: 	if ($env{'form.scantron_CODElist'} =~ /\S/) { 
 7759: 	    $r->print("
 7760:     <label>
 7761:        <input type='radio' name='scantron_CODE_resolution' value='use_found' />
 7762:        ".&mt("[_1]Select[_2] a CODE from the list of all CODEs and use it.",
 7763: 	     "<a target='_blank' href='$href'>","</a>")."
 7764:     </label> 
 7765:     ".&mt("Selected CODE is [_1]",'<input readonly="readonly" type="text" size="8" name="scantron_CODE_selectedvalue" onfocus="javascript:change_radio(\'use_found\')" onchange="javascript:change_radio(\'use_found\')" />'));
 7766: 	    $r->print("\n<br />");
 7767: 	}
 7768: 	$r->print("
 7769:     <label>
 7770:        <input type='radio' name='scantron_CODE_resolution' value='use_typed' />
 7771:        ".&mt("Use [_1] as the CODE.",
 7772: 	     "</label><input type='text' size='8' name='scantron_CODE_newvalue' onfocus=\"javascript:change_radio('use_typed')\" onkeypress=\"javascript:change_radio('use_typed')\" />"));
 7773: 	$r->print("\n<br /><br />");
 7774:     } elsif ($error eq 'doublebubble') {
 7775: 	$r->print('<p class="LC_warning">'.&mt("There have been multiple bubbles scanned for some question(s)")."</p>\n");
 7776: 
 7777: 	# The form field scantron_questions is acutally a list of line numbers.
 7778: 	# represented by this form so:
 7779: 
 7780: 	my $line_list = &questions_to_line_list($arg,$randomorder,$randompick,
 7781:                                                 $respnumlookup,$startline);
 7782: 
 7783: 	$r->print('<input type="hidden" name="scantron_questions" value="'.
 7784: 		  $line_list.'" />');
 7785: 	$r->print($message);
 7786: 	$r->print("<p>".&mt("Please indicate which bubble should be used for grading")."</p>");
 7787: 	foreach my $question (@{$arg}) {
 7788: 	    my @linenums = &prompt_for_corrections($r,$question,$scan_config,
 7789:                                                    $scan_record, $error,
 7790:                                                    $randomorder,$randompick,
 7791:                                                    $respnumlookup,$startline);
 7792:             push(@lines_to_correct,@linenums);
 7793: 	}
 7794:         $r->print(&verify_bubbles_checked(@lines_to_correct));
 7795:     } elsif ($error eq 'missingbubble') {
 7796: 	$r->print('<p class="LC_warning">'.&mt("There have been [_1]no[_2] bubbles scanned for some question(s)",'<b>','</b>')."</p>\n");
 7797: 	$r->print($message);
 7798: 	$r->print("<p>".&mt("Please indicate which bubble should be used for grading.")."</p>");
 7799: 	$r->print(&mt("Some questions have no scanned bubbles.")."\n");
 7800: 
 7801: 	# The form field scantron_questions is actually a list of line numbers not
 7802: 	# a list of question numbers. Therefore:
 7803: 	#
 7804: 
 7805: 	my $line_list = &questions_to_line_list($arg,$randomorder,$randompick,
 7806:                                                 $respnumlookup,$startline);
 7807: 
 7808: 	$r->print('<input type="hidden" name="scantron_questions" value="'.
 7809: 		  $line_list.'" />');
 7810: 	foreach my $question (@{$arg}) {
 7811: 	    my @linenums = &prompt_for_corrections($r,$question,$scan_config,
 7812:                                                    $scan_record, $error,
 7813:                                                    $randomorder,$randompick,
 7814:                                                    $respnumlookup,$startline);
 7815:             push(@lines_to_correct,@linenums);
 7816: 	}
 7817:         $r->print(&verify_bubbles_checked(@lines_to_correct));
 7818:     } else {
 7819: 	$r->print("\n<ul>");
 7820:     }
 7821:     $r->print("\n</li></ul>");
 7822: }
 7823: 
 7824: sub verify_bubbles_checked {
 7825:     my (@ansnums) = @_;
 7826:     my $ansnumstr = join('","',@ansnums);
 7827:     my $warning = &mt("A bubble or 'No bubble' selection has not been made for one or more lines.");
 7828:     &js_escape(\$warning);
 7829:     my $output = &Apache::lonhtmlcommon::scripttag(<<ENDSCRIPT);
 7830: function verify_bubble_radio(form) {
 7831:     var ansnumArray = new Array ("$ansnumstr");
 7832:     var need_bubble_count = 0;
 7833:     for (var i=0; i<ansnumArray.length; i++) {
 7834:         if (form.elements["scantron_correct_Q_"+ansnumArray[i]].length > 1) {
 7835:             var bubble_picked = 0; 
 7836:             for (var j=0; j<form.elements["scantron_correct_Q_"+ansnumArray[i]].length; j++) {
 7837:                 if (form.elements["scantron_correct_Q_"+ansnumArray[i]][j].checked == true) {
 7838:                     bubble_picked = 1;
 7839:                 }
 7840:             }
 7841:             if (bubble_picked == 0) {
 7842:                 need_bubble_count ++;
 7843:             }
 7844:         }
 7845:     }
 7846:     if (need_bubble_count) {
 7847:         alert("$warning");
 7848:         return;
 7849:     }
 7850:     form.submit(); 
 7851: }
 7852: ENDSCRIPT
 7853:     return $output;
 7854: }
 7855: 
 7856: =pod
 7857: 
 7858: =item  questions_to_line_list
 7859: 
 7860: Converts a list of questions into a string of comma separated
 7861: line numbers in the answer sheet used by the questions.  This is
 7862: used to fill in the scantron_questions form field.
 7863: 
 7864:   Arguments:
 7865:      questions    - Reference to an array of questions.
 7866:      randomorder  - True if randomorder in use.
 7867:      randompick   - True if randompick in use.
 7868:      respnumlookup - Reference to HASH mapping question numbers in bubble lines
 7869:                      for current line to question number used for same question
 7870:                      in "Master Seqence" (as seen by Course Coordinator).
 7871:      startline    - Reference to hash where key is question number (0 is first)
 7872:                     and key is number of first bubble line for current student
 7873:                     or code-based randompick and/or randomorder.
 7874: 
 7875: =cut
 7876: 
 7877: 
 7878: sub questions_to_line_list {
 7879:     my ($questions,$randomorder,$randompick,$respnumlookup,$startline) = @_;
 7880:     my @lines;
 7881: 
 7882:     foreach my $item (@{$questions}) {
 7883:         my $question = $item;
 7884:         my ($first,$count,$last);
 7885:         if ($item =~ /^(\d+)\.(\d+)$/) {
 7886:             $question = $1;
 7887:             my $subquestion = $2;
 7888:             my $responsenum = $question-1;
 7889:             if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH')) {
 7890:                 $responsenum = $respnumlookup->{$question-1};
 7891:                 if (ref($startline) eq 'HASH') {
 7892:                     $first = $startline->{$question-1} + 1;
 7893:                 }
 7894:             } else {
 7895:                 $first = $first_bubble_line{$responsenum} + 1;
 7896:             }
 7897:             my @subans = split(/,/,$subdivided_bubble_lines{$responsenum});
 7898:             my $subcount = 1;
 7899:             while ($subcount<$subquestion) {
 7900:                 $first += $subans[$subcount-1];
 7901:                 $subcount ++;
 7902:             }
 7903:             $count = $subans[$subquestion-1];
 7904:         } else {
 7905:             my $responsenum = $question-1;
 7906:             if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH')) {
 7907:                 $responsenum = $respnumlookup->{$question-1};
 7908:                 if (ref($startline) eq 'HASH') {
 7909:                     $first = $startline->{$question-1} + 1;
 7910:                 }
 7911:             } else {
 7912:                 $first = $first_bubble_line{$responsenum} + 1;
 7913:             }
 7914: 	    $count   = $bubble_lines_per_response{$responsenum};
 7915:         }
 7916:         $last = $first+$count-1;
 7917:         push(@lines, ($first..$last));
 7918:     }
 7919:     return join(',', @lines);
 7920: }
 7921: 
 7922: =pod 
 7923: 
 7924: =item prompt_for_corrections
 7925: 
 7926: Prompts for a potentially multiline correction to the
 7927: user's bubbling (factors out common code from scantron_get_correction
 7928: for multi and missing bubble cases).
 7929: 
 7930:  Arguments:
 7931:    $r           - Apache request object.
 7932:    $question    - The question number to prompt for.
 7933:    $scan_config - The scantron file configuration hash.
 7934:    $scan_record - Reference to the hash that has the the parsed scanlines.
 7935:    $error       - Type of error
 7936:    $randomorder - True if randomorder in use.
 7937:    $randompick  - True if randompick in use.
 7938:    $respnumlookup - Reference to HASH mapping question numbers in bubble lines
 7939:                     for current line to question number used for same question
 7940:                     in "Master Seqence" (as seen by Course Coordinator).
 7941:    $startline   - Reference to hash where key is question number (0 is first)
 7942:                   and value is number of first bubble line for current student
 7943:                   or code-based randompick and/or randomorder.
 7944: 
 7945: 
 7946:  Implicit inputs:
 7947:    %bubble_lines_per_response   - Starting line numbers for each question.
 7948:                                   Numbered from 0 (but question numbers are from
 7949:                                   1.
 7950:    %first_bubble_line           - Starting bubble line for each question.
 7951:    %subdivided_bubble_lines     - optionresponse, matchresponse and rankresponse 
 7952:                                   type problems render as separate sub-questions, 
 7953:                                   in exam mode. This hash contains a 
 7954:                                   comma-separated list of the lines per 
 7955:                                   sub-question.
 7956:    %responsetype_per_response   - essayresponse, formularesponse,
 7957:                                   stringresponse, imageresponse, reactionresponse,
 7958:                                   and organicresponse type problem parts can have
 7959:                                   multiple lines per response if the weight
 7960:                                   assigned exceeds 10.  In this case, only
 7961:                                   one bubble per line is permitted, but more 
 7962:                                   than one line might contain bubbles, e.g.
 7963:                                   bubbling of: line 1 - J, line 2 - J, 
 7964:                                   line 3 - B would assign 22 points.  
 7965: 
 7966: =cut
 7967: 
 7968: sub prompt_for_corrections {
 7969:     my ($r, $question, $scan_config, $scan_record, $error, $randomorder,
 7970:         $randompick, $respnumlookup, $startline) = @_;
 7971:     my ($current_line,$lines);
 7972:     my @linenums;
 7973:     my $questionnum = $question;
 7974:     my ($first,$responsenum);
 7975:     if ($question =~ /^(\d+)\.(\d+)$/) {
 7976:         $question = $1;
 7977:         my $subquestion = $2;
 7978:         if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH')) {
 7979:             $responsenum = $respnumlookup->{$question-1};
 7980:             if (ref($startline) eq 'HASH') {
 7981:                 $first = $startline->{$question-1};
 7982:             }
 7983:         } else {
 7984:             $responsenum = $question-1;
 7985:             $first = $first_bubble_line{$responsenum};
 7986:         }
 7987:         $current_line = $first + 1 ;
 7988:         my @subans = split(/,/,$subdivided_bubble_lines{$responsenum});
 7989:         my $subcount = 1;
 7990:         while ($subcount<$subquestion) {
 7991:             $current_line += $subans[$subcount-1];
 7992:             $subcount ++;
 7993:         }
 7994:         $lines = $subans[$subquestion-1];
 7995:     } else {
 7996:         if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH')) {
 7997:             $responsenum = $respnumlookup->{$question-1};
 7998:             if (ref($startline) eq 'HASH') { 
 7999:                 $first = $startline->{$question-1};
 8000:             }
 8001:         } else {
 8002:             $responsenum = $question-1;
 8003:             $first = $first_bubble_line{$responsenum};
 8004:         }
 8005:         $current_line = $first + 1;
 8006:         $lines        = $bubble_lines_per_response{$responsenum};
 8007:     }
 8008:     if ($lines > 1) {
 8009:         $r->print(&mt('The group of bubble lines below responds to a single question.').'<br />');
 8010:         if (($responsetype_per_response{$responsenum} eq 'essayresponse') ||
 8011:             ($responsetype_per_response{$responsenum} eq 'formularesponse') ||
 8012:             ($responsetype_per_response{$responsenum} eq 'stringresponse') ||
 8013:             ($responsetype_per_response{$responsenum} eq 'imageresponse') ||
 8014:             ($responsetype_per_response{$responsenum} eq 'reactionresponse') ||
 8015:             ($responsetype_per_response{$responsenum} eq 'organicresponse')) {
 8016:             $r->print(
 8017:                 &mt("Although this particular question type requires handgrading, the instructions for this question in the bubblesheet exam directed students to leave [quant,_1,line] blank on their bubblesheets.",$lines)
 8018:                .'<br /><br />'
 8019:                .&mt('A non-zero score can be assigned to the student during bubblesheet grading by selecting a bubble in at least one line.')
 8020:                .'<br />'
 8021:                .&mt('The score for this question will be a sum of the numeric values for the selected bubbles from each line, where A=1 point, B=2 points etc.')
 8022:                .'<br />'
 8023:                .&mt("To assign a score of zero for this question, mark all lines as 'No bubble'.")
 8024:                .'<br /><br />'
 8025:             );
 8026:         } else {
 8027:             $r->print(&mt("Select at most one bubble in a single line and select 'No Bubble' in all the other lines. ")."<br />");
 8028:         }
 8029:     }
 8030:     for (my $i =0; $i < $lines; $i++) {
 8031:         my $selected = $$scan_record{"scantron.$current_line.answer"};
 8032: 	&scantron_bubble_selector($r,$scan_config,$current_line,
 8033: 	        		  $questionnum,$error,split('', $selected));
 8034:         push(@linenums,$current_line);
 8035: 	$current_line++;
 8036:     }
 8037:     if ($lines > 1) {
 8038: 	$r->print("<hr /><br />");
 8039:     }
 8040:     return @linenums;
 8041: }
 8042: 
 8043: =pod
 8044: 
 8045: =item scantron_bubble_selector
 8046:   
 8047:    Generates the html radiobuttons to correct a single bubble line
 8048:    possibly showing the existing the selected bubbles if known
 8049: 
 8050:  Arguments:
 8051:     $r           - Apache request object
 8052:     $scan_config - hash from &Apache::lonnet::get_scantron_config()
 8053:     $line        - Number of the line being displayed.
 8054:     $questionnum - Question number (may include subquestion)
 8055:     $error       - Type of error.
 8056:     @selected    - Array of bubbles picked on this line.
 8057: 
 8058: =cut
 8059: 
 8060: sub scantron_bubble_selector {
 8061:     my ($r,$scan_config,$line,$questionnum,$error,@selected)=@_;
 8062:     my $max=$$scan_config{'Qlength'};
 8063: 
 8064:     my $scmode=$$scan_config{'Qon'};
 8065:     if ($scmode eq 'number' || $scmode eq 'letter') { 
 8066:         if (($$scan_config{'BubblesPerRow'} =~ /^\d+$/) &&
 8067:             ($$scan_config{'BubblesPerRow'} > 0)) {
 8068:             $max=$$scan_config{'BubblesPerRow'};
 8069:             if (($scmode eq 'number') && ($max > 10)) {
 8070:                 $max = 10;
 8071:             } elsif (($scmode eq 'letter') && $max > 26) {
 8072:                 $max = 26;
 8073:             }
 8074:         } else {
 8075:             $max = 10;
 8076:         }
 8077:     }
 8078: 
 8079:     my @alphabet=('A'..'Z');
 8080:     $r->print(&Apache::loncommon::start_data_table().
 8081:               &Apache::loncommon::start_data_table_row());
 8082:     $r->print('<td rowspan="2" class="LC_leftcol_header">'.$line.'</td>');
 8083:     for (my $i=0;$i<$max+1;$i++) {
 8084: 	$r->print("\n".'<td align="center">');
 8085: 	if ($selected[0] eq $alphabet[$i]) { $r->print('X'); shift(@selected) }
 8086: 	else { $r->print('&nbsp;'); }
 8087: 	$r->print('</td>');
 8088:     }
 8089:     $r->print(&Apache::loncommon::end_data_table_row().
 8090:               &Apache::loncommon::start_data_table_row());
 8091:     for (my $i=0;$i<$max;$i++) {
 8092: 	$r->print("\n".
 8093: 		  '<td><label><input type="radio" name="scantron_correct_Q_'.
 8094: 		  $line.'" value="'.$i.'" />'.$alphabet[$i]."</label></td>");
 8095:     }
 8096:     my $nobub_checked = ' ';
 8097:     if ($error eq 'missingbubble') {
 8098:         $nobub_checked = ' checked = "checked" ';
 8099:     }
 8100:     $r->print("\n".'<td><label><input type="radio" name="scantron_correct_Q_'.
 8101: 	      $line.'" value="none"'.$nobub_checked.'/>'.&mt('No bubble').
 8102:               '</label>'."\n".'<input type="hidden" name="scantron_questionnum_Q_'.
 8103:               $line.'" value="'.$questionnum.'" /></td>');
 8104:     $r->print(&Apache::loncommon::end_data_table_row().
 8105:               &Apache::loncommon::end_data_table());
 8106: }
 8107: 
 8108: =pod
 8109: 
 8110: =item num_matches
 8111: 
 8112:    Counts the number of characters that are the same between the two arguments.
 8113: 
 8114:  Arguments:
 8115:    $orig - CODE from the scanline
 8116:    $code - CODE to match against
 8117: 
 8118:  Returns:
 8119:    $count - integer count of the number of same characters between the
 8120:             two arguments
 8121: 
 8122: =cut
 8123: 
 8124: sub num_matches {
 8125:     my ($orig,$code) = @_;
 8126:     my @code=split(//,$code);
 8127:     my @orig=split(//,$orig);
 8128:     my $same=0;
 8129:     for (my $i=0;$i<scalar(@code);$i++) {
 8130: 	if ($code[$i] eq $orig[$i]) { $same++; }
 8131:     }
 8132:     return $same;
 8133: }
 8134: 
 8135: =pod
 8136: 
 8137: =item scantron_get_closely_matching_CODEs
 8138: 
 8139:    Cycles through all CODEs and finds the set that has the greatest
 8140:    number of same characters as the provided CODE
 8141: 
 8142:  Arguments:
 8143:    $allcodes - hash ref returned by &get_codes()
 8144:    $CODE     - CODE from the current scanline
 8145: 
 8146:  Returns:
 8147:    2 element list
 8148:     - first elements is number of how closely matching the best fit is 
 8149:       (5 means best set has 5 matching characters)
 8150:     - second element is an arrary ref containing the set of valid CODEs
 8151:       that best fit the passed in CODE
 8152: 
 8153: =cut
 8154: 
 8155: sub scantron_get_closely_matching_CODEs {
 8156:     my ($allcodes,$CODE)=@_;
 8157:     my @CODEs;
 8158:     foreach my $testcode (sort(keys(%{$allcodes}))) {
 8159: 	push(@{$CODEs[&num_matches($CODE,$testcode)]},$testcode);
 8160:     }
 8161: 
 8162:     return ($#CODEs,$CODEs[-1]);
 8163: }
 8164: 
 8165: =pod
 8166: 
 8167: =item get_codes
 8168: 
 8169:    Builds a hash which has keys of all of the valid CODEs from the selected
 8170:    set of remembered CODEs.
 8171: 
 8172:  Arguments:
 8173:   $old_name - name of the set of remembered CODEs
 8174:   $cdom     - domain of the course
 8175:   $cnum     - internal course name
 8176: 
 8177:  Returns:
 8178:   %allcodes - keys are the valid CODEs, values are all 1
 8179: 
 8180: =cut
 8181: 
 8182: sub get_codes {
 8183:     my ($old_name, $cdom, $cnum) = @_;
 8184:     if (!$old_name) {
 8185: 	$old_name=$env{'form.scantron_CODElist'};
 8186:     }
 8187:     if (!$cdom) {
 8188: 	$cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
 8189:     }
 8190:     if (!$cnum) {
 8191: 	$cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
 8192:     }
 8193:     my %result=&Apache::lonnet::get('CODEs',[$old_name,"type\0$old_name"],
 8194: 				    $cdom,$cnum);
 8195:     my %allcodes;
 8196:     if ($result{"type\0$old_name"} eq 'number') {
 8197: 	%allcodes=map {($_,1)} split(',',$result{$old_name});
 8198:     } else {
 8199: 	%allcodes=map {(&Apache::lonprintout::num_to_letters($_),1)} split(',',$result{$old_name});
 8200:     }
 8201:     return %allcodes;
 8202: }
 8203: 
 8204: =pod
 8205: 
 8206: =item scantron_validate_CODE
 8207: 
 8208:    Validates all scanlines in the selected file to not have any
 8209:    invalid or underspecified CODEs and that none of the codes are
 8210:    duplicated if this was requested.
 8211: 
 8212: =cut
 8213: 
 8214: sub scantron_validate_CODE {
 8215:     my ($r,$currentphase) = @_;
 8216:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 8217:     if ($scantron_config{'CODElocation'} &&
 8218: 	$scantron_config{'CODEstart'} &&
 8219: 	$scantron_config{'CODElength'}) {
 8220: 	if (!defined($env{'form.scantron_CODElist'})) {
 8221: 	    &FIXME_blow_up()
 8222: 	}
 8223:     } else {
 8224: 	return (0,$currentphase+1);
 8225:     }
 8226:     
 8227:     my %usedCODEs;
 8228: 
 8229:     my %allcodes=&get_codes();
 8230: 
 8231:     my $nav_error;
 8232:     &scantron_get_maxbubble(\$nav_error,\%scantron_config); # parse needs the lines per response array.
 8233:     if ($nav_error) {
 8234:         $r->print(&navmap_errormsg());
 8235:         return(1,$currentphase);
 8236:     }
 8237: 
 8238:     my ($scanlines,$scan_data)=&scantron_getfile();
 8239:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 8240: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 8241: 	if ($line=~/^[\s\cz]*$/) { next; }
 8242: 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 8243: 						 $scan_data);
 8244: 	my $CODE=$$scan_record{'scantron.CODE'};
 8245: 	my $error=0;
 8246: 	if (!&Apache::lonnet::validCODE($CODE)) {
 8247: 	    &scantron_get_correction($r,$i,$scan_record,
 8248: 				     \%scantron_config,
 8249: 				     $line,'incorrectCODE',\%allcodes);
 8250: 	    return(1,$currentphase);
 8251: 	}
 8252: 	if (%allcodes && !exists($allcodes{$CODE}) 
 8253: 	    && !$$scan_record{'scantron.useCODE'}) {
 8254: 	    &scantron_get_correction($r,$i,$scan_record,
 8255: 				     \%scantron_config,
 8256: 				     $line,'incorrectCODE',\%allcodes);
 8257: 	    return(1,$currentphase);
 8258: 	}
 8259: 	if (exists($usedCODEs{$CODE}) 
 8260: 	    && $env{'form.scantron_CODEunique'} eq 'yes'
 8261: 	    && !$$scan_record{'scantron.CODE_ignore_dup'}) {
 8262: 	    &scantron_get_correction($r,$i,$scan_record,
 8263: 				     \%scantron_config,
 8264: 				     $line,'duplicateCODE',$usedCODEs{$CODE});
 8265: 	    return(1,$currentphase);
 8266: 	}
 8267: 	push(@{$usedCODEs{$CODE}},$$scan_record{'scantron.PaperID'});
 8268:     }
 8269:     return (0,$currentphase+1);
 8270: }
 8271: 
 8272: =pod
 8273: 
 8274: =item scantron_validate_doublebubble
 8275: 
 8276:    Validates all scanlines in the selected file to not have any
 8277:    bubble lines with multiple bubbles marked.
 8278: 
 8279: =cut
 8280: 
 8281: sub scantron_validate_doublebubble {
 8282:     my ($r,$currentphase) = @_;
 8283:     #get student info
 8284:     my $classlist=&Apache::loncoursedata::get_classlist();
 8285:     my %idmap=&username_to_idmap($classlist);
 8286:     my (undef,undef,$sequence)=
 8287:         &Apache::lonnet::decode_symb($env{'form.selectpage'});
 8288: 
 8289:     #get scantron line setup
 8290:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 8291:     my ($scanlines,$scan_data)=&scantron_getfile();
 8292: 
 8293:     my $navmap = Apache::lonnavmaps::navmap->new();
 8294:     unless (ref($navmap)) {
 8295:         $r->print(&navmap_errormsg());
 8296:         return(1,$currentphase);
 8297:     }
 8298:     my $map=$navmap->getResourceByUrl($sequence);
 8299:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 8300:     my ($randomorder,$randompick,@master_seq,%symb_to_resource,%grader_partids_by_symb,
 8301:         %grader_randomlists_by_symb,%orderedforcode,%respnumlookup,%startline);
 8302:     my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config);
 8303: 
 8304:     my $nav_error;
 8305:     if (ref($map)) {
 8306:         $randomorder = $map->randomorder();
 8307:         $randompick = $map->randompick();
 8308:         if ($randomorder || $randompick) {
 8309:             $nav_error = &get_master_seq(\@resources,\@master_seq,\%symb_to_resource);
 8310:             if ($nav_error) {
 8311:                 $r->print(&navmap_errormsg());
 8312:                 return(1,$currentphase);
 8313:             }
 8314:             &graders_resources_pass(\@resources,\%grader_partids_by_symb,
 8315:                                     \%grader_randomlists_by_symb,$bubbles_per_row);
 8316:         }
 8317:     } else {
 8318:         $r->print(&navmap_errormsg());
 8319:         return(1,$currentphase);
 8320:     }
 8321: 
 8322:     &scantron_get_maxbubble(\$nav_error,\%scantron_config); # parse needs the bubble line array.
 8323:     if ($nav_error) {
 8324:         $r->print(&navmap_errormsg());
 8325:         return(1,$currentphase);
 8326:     }
 8327: 
 8328:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 8329: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 8330: 	if ($line=~/^[\s\cz]*$/) { next; }
 8331: 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 8332: 						 $scan_data,undef,\%idmap,$randomorder,
 8333:                                                  $randompick,$sequence,\@master_seq,
 8334:                                                  \%symb_to_resource,\%grader_partids_by_symb,
 8335:                                                  \%orderedforcode,\%respnumlookup,\%startline);
 8336: 	if (!defined($$scan_record{'scantron.doubleerror'})) { next; }
 8337: 	&scantron_get_correction($r,$i,$scan_record,\%scantron_config,$line,
 8338: 				 'doublebubble',
 8339: 				 $$scan_record{'scantron.doubleerror'},
 8340:                                  $randomorder,$randompick,\%respnumlookup,\%startline);
 8341:     	return (1,$currentphase);
 8342:     }
 8343:     return (0,$currentphase+1);
 8344: }
 8345: 
 8346: 
 8347: sub scantron_get_maxbubble {
 8348:     my ($nav_error,$scantron_config) = @_;
 8349:     if (defined($env{'form.scantron_maxbubble'}) &&
 8350: 	$env{'form.scantron_maxbubble'}) {
 8351: 	&restore_bubble_lines();
 8352: 	return $env{'form.scantron_maxbubble'};
 8353:     }
 8354: 
 8355:     my (undef, undef, $sequence) =
 8356: 	&Apache::lonnet::decode_symb($env{'form.selectpage'});
 8357: 
 8358:     my $navmap=Apache::lonnavmaps::navmap->new();
 8359:     unless (ref($navmap)) {
 8360:         if (ref($nav_error)) {
 8361:             $$nav_error = 1;
 8362:         }
 8363:         return;
 8364:     }
 8365:     my $map=$navmap->getResourceByUrl($sequence);
 8366:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 8367:     my $bubbles_per_row = &bubblesheet_bubbles_per_row($scantron_config);
 8368: 
 8369:     &Apache::lonxml::clear_problem_counter();
 8370: 
 8371:     my $uname       = $env{'user.name'};
 8372:     my $udom        = $env{'user.domain'};
 8373:     my $cid         = $env{'request.course.id'};
 8374:     my $total_lines = 0;
 8375:     %bubble_lines_per_response = ();
 8376:     %first_bubble_line         = ();
 8377:     %subdivided_bubble_lines   = ();
 8378:     %responsetype_per_response = ();
 8379:     %masterseq_id_responsenum  = ();
 8380: 
 8381:     my $response_number = 0;
 8382:     my $bubble_line     = 0;
 8383:     foreach my $resource (@resources) {
 8384:         my $resid = $resource->id(); 
 8385:         my ($analysis,$parts) = &scantron_partids_tograde($resource,$cid,$uname,
 8386:                                                           $udom,undef,$bubbles_per_row);
 8387:         if ((ref($analysis) eq 'HASH') && (ref($parts) eq 'ARRAY')) {
 8388: 	    foreach my $part_id (@{$parts}) {
 8389:                 my $lines;
 8390: 
 8391: 	        # TODO - make this a persistent hash not an array.
 8392: 
 8393:                 # optionresponse, matchresponse and rankresponse type items 
 8394:                 # render as separate sub-questions in exam mode.
 8395:                 if (($analysis->{$part_id.'.type'} eq 'optionresponse') ||
 8396:                     ($analysis->{$part_id.'.type'} eq 'matchresponse') ||
 8397:                     ($analysis->{$part_id.'.type'} eq 'rankresponse')) {
 8398:                     my ($numbub,$numshown);
 8399:                     if ($analysis->{$part_id.'.type'} eq 'optionresponse') {
 8400:                         if (ref($analysis->{$part_id.'.options'}) eq 'ARRAY') {
 8401:                             $numbub = scalar(@{$analysis->{$part_id.'.options'}});
 8402:                         }
 8403:                     } elsif ($analysis->{$part_id.'.type'} eq 'matchresponse') {
 8404:                         if (ref($analysis->{$part_id.'.items'}) eq 'ARRAY') {
 8405:                             $numbub = scalar(@{$analysis->{$part_id.'.items'}});
 8406:                         }
 8407:                     } elsif ($analysis->{$part_id.'.type'} eq 'rankresponse') {
 8408:                         if (ref($analysis->{$part_id.'.foils'}) eq 'ARRAY') {
 8409:                             $numbub = scalar(@{$analysis->{$part_id.'.foils'}});
 8410:                         }
 8411:                     }
 8412:                     if (ref($analysis->{$part_id.'.shown'}) eq 'ARRAY') {
 8413:                         $numshown = scalar(@{$analysis->{$part_id.'.shown'}});
 8414:                     }
 8415:                     my $bubbles_per_row =
 8416:                         &bubblesheet_bubbles_per_row($scantron_config);
 8417:                     my $inner_bubble_lines = int($numbub/$bubbles_per_row);
 8418:                     if (($numbub % $bubbles_per_row) != 0) {
 8419:                         $inner_bubble_lines++;
 8420:                     }
 8421:                     for (my $i=0; $i<$numshown; $i++) {
 8422:                         $subdivided_bubble_lines{$response_number} .= 
 8423:                             $inner_bubble_lines.',';
 8424:                     }
 8425:                     $subdivided_bubble_lines{$response_number} =~ s/,$//;
 8426:                     $lines = $numshown * $inner_bubble_lines;
 8427:                 } else {
 8428:                     $lines = $analysis->{"$part_id.bubble_lines"};
 8429:                 }
 8430: 
 8431:                 $first_bubble_line{$response_number} = $bubble_line;
 8432: 	        $bubble_lines_per_response{$response_number} = $lines;
 8433:                 $responsetype_per_response{$response_number} = 
 8434:                     $analysis->{$part_id.'.type'};
 8435:                 $masterseq_id_responsenum{$resid.'_'.$part_id} = $response_number;  
 8436: 	        $response_number++;
 8437: 
 8438: 	        $bubble_line +=  $lines;
 8439: 	        $total_lines +=  $lines;
 8440: 	    }
 8441:         }
 8442:     }
 8443:     &Apache::lonnet::delenv('scantron.');
 8444: 
 8445:     &save_bubble_lines();
 8446:     $env{'form.scantron_maxbubble'} =
 8447: 	$total_lines;
 8448:     return $env{'form.scantron_maxbubble'};
 8449: }
 8450: 
 8451: sub bubblesheet_bubbles_per_row {
 8452:     my ($scantron_config) = @_;
 8453:     my $bubbles_per_row;
 8454:     if (ref($scantron_config) eq 'HASH') {
 8455:         $bubbles_per_row = $scantron_config->{'BubblesPerRow'};
 8456:     }
 8457:     if ((!$bubbles_per_row) || ($bubbles_per_row < 1)) {
 8458:         $bubbles_per_row = 10;
 8459:     }
 8460:     return $bubbles_per_row;
 8461: }
 8462: 
 8463: sub scantron_validate_missingbubbles {
 8464:     my ($r,$currentphase) = @_;
 8465:     #get student info
 8466:     my $classlist=&Apache::loncoursedata::get_classlist();
 8467:     my %idmap=&username_to_idmap($classlist);
 8468:     my (undef,undef,$sequence)=
 8469:         &Apache::lonnet::decode_symb($env{'form.selectpage'});
 8470: 
 8471:     #get scantron line setup
 8472:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 8473:     my ($scanlines,$scan_data)=&scantron_getfile();
 8474: 
 8475:     my $navmap = Apache::lonnavmaps::navmap->new();
 8476:     unless (ref($navmap)) {
 8477:         $r->print(&navmap_errormsg());
 8478:         return(1,$currentphase);
 8479:     }
 8480: 
 8481:     my $map=$navmap->getResourceByUrl($sequence);
 8482:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 8483:     my ($randomorder,$randompick,@master_seq,%symb_to_resource,%grader_partids_by_symb,
 8484:         %grader_randomlists_by_symb,%orderedforcode,%respnumlookup,%startline);
 8485:     my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config);
 8486: 
 8487:     my $nav_error;
 8488:     if (ref($map)) {
 8489:         $randomorder = $map->randomorder();
 8490:         $randompick = $map->randompick();
 8491:         if ($randomorder || $randompick) {
 8492:             $nav_error = &get_master_seq(\@resources,\@master_seq,\%symb_to_resource);
 8493:             if ($nav_error) {
 8494:                 $r->print(&navmap_errormsg());
 8495:                 return(1,$currentphase);
 8496:             }
 8497:             &graders_resources_pass(\@resources,\%grader_partids_by_symb,
 8498:                                     \%grader_randomlists_by_symb,$bubbles_per_row);
 8499:         }
 8500:     } else {
 8501:         $r->print(&navmap_errormsg());
 8502:         return(1,$currentphase);
 8503:     }
 8504: 
 8505: 
 8506:     my $max_bubble=&scantron_get_maxbubble(\$nav_error,\%scantron_config);
 8507:     if ($nav_error) {
 8508:         $r->print(&navmap_errormsg());
 8509:         return(1,$currentphase);
 8510:     }
 8511: 
 8512:     if (!$max_bubble) { $max_bubble=2**31; }
 8513:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 8514: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 8515: 	if ($line=~/^[\s\cz]*$/) { next; }
 8516: 	my $scan_record =
 8517:             &scantron_parse_scanline($line,$i,\%scantron_config,$scan_data,undef,\%idmap,
 8518: 				     $randomorder,$randompick,$sequence,\@master_seq,
 8519:                                      \%symb_to_resource,\%grader_partids_by_symb,
 8520:                                      \%orderedforcode,\%respnumlookup,\%startline);
 8521: 	if (!defined($$scan_record{'scantron.missingerror'})) { next; }
 8522: 	my @to_correct;
 8523: 	
 8524: 	# Probably here's where the error is...
 8525: 
 8526: 	foreach my $missing (@{$$scan_record{'scantron.missingerror'}}) {
 8527:             my $lastbubble;
 8528:             if ($missing =~ /^(\d+)\.(\d+)$/) {
 8529:                my $question = $1;
 8530:                my $subquestion = $2;
 8531:                my ($first,$responsenum);
 8532:                if ($randomorder || $randompick) {
 8533:                    $responsenum = $respnumlookup{$question-1};
 8534:                    $first = $startline{$question-1};
 8535:                } else {
 8536:                    $responsenum = $question-1; 
 8537:                    $first = $first_bubble_line{$responsenum};
 8538:                }
 8539:                if (!defined($first)) { next; }
 8540:                my @subans = split(/,/,$subdivided_bubble_lines{$responsenum});
 8541:                my $subcount = 1;
 8542:                while ($subcount<$subquestion) {
 8543:                    $first += $subans[$subcount-1];
 8544:                    $subcount ++;
 8545:                }
 8546:                my $count = $subans[$subquestion-1];
 8547:                $lastbubble = $first + $count;
 8548:             } else {
 8549:                my ($first,$responsenum);
 8550:                if ($randomorder || $randompick) {
 8551:                    $responsenum = $respnumlookup{$missing-1};
 8552:                    $first = $startline{$missing-1};
 8553:                } else {
 8554:                    $responsenum = $missing-1;
 8555:                    $first = $first_bubble_line{$responsenum};
 8556:                }
 8557:                if (!defined($first)) { next; }
 8558:                $lastbubble = $first + $bubble_lines_per_response{$responsenum};
 8559:             }
 8560:             if ($lastbubble > $max_bubble) { next; }
 8561: 	    push(@to_correct,$missing);
 8562: 	}
 8563: 	if (@to_correct) {
 8564: 	    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
 8565: 				     $line,'missingbubble',\@to_correct,
 8566:                                      $randomorder,$randompick,\%respnumlookup,
 8567:                                      \%startline);
 8568: 	    return (1,$currentphase);
 8569: 	}
 8570: 
 8571:     }
 8572:     return (0,$currentphase+1);
 8573: }
 8574: 
 8575: sub hand_bubble_option {
 8576:     my (undef, undef, $sequence) =
 8577:         &Apache::lonnet::decode_symb($env{'form.selectpage'});
 8578:     return if ($sequence eq '');
 8579:     my $navmap = Apache::lonnavmaps::navmap->new();
 8580:     unless (ref($navmap)) {
 8581:         return;
 8582:     }
 8583:     my $needs_hand_bubbles;
 8584:     my $map=$navmap->getResourceByUrl($sequence);
 8585:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 8586:     foreach my $res (@resources) {
 8587:         if (ref($res)) {
 8588:             if ($res->is_problem()) {
 8589:                 my $partlist = $res->parts();
 8590:                 foreach my $part (@{ $partlist }) {
 8591:                     my @types = $res->responseType($part);
 8592:                     if (grep(/^(chem|essay|image|formula|math|string|functionplot)$/,@types)) {
 8593:                         $needs_hand_bubbles = 1;
 8594:                         last;
 8595:                     }
 8596:                 }
 8597:             }
 8598:         }
 8599:     }
 8600:     if ($needs_hand_bubbles) {
 8601:         my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 8602:         my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config);
 8603:         return &mt('The sequence to be graded contains response types which are handgraded.').'<p>'.
 8604:                &mt('If you have already graded these by bubbling sheets to indicate points awarded, [_1]what point value is assigned to a filled last bubble in each row?','<br />').
 8605:                '<label><input type="radio" name="scantron_lastbubblepoints" value="'.$bubbles_per_row.'" checked="checked" />'.&mt('[quant,_1,point]',$bubbles_per_row).'</label>&nbsp;'.&mt('or').'&nbsp;'.
 8606:                '<label><input type="radio" name="scantron_lastbubblepoints" value="0" />'.&mt('0 points').'</label></p>';
 8607:     }
 8608:     return;
 8609: }
 8610: 
 8611: sub scantron_process_students {
 8612:     my ($r,$symb) = @_;
 8613: 
 8614:     my (undef,undef,$sequence)=&Apache::lonnet::decode_symb($env{'form.selectpage'});
 8615:     if (!$symb) {
 8616: 	return '';
 8617:     }
 8618:     my $default_form_data=&defaultFormData($symb);
 8619: 
 8620:     my %scantron_config=&Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 8621:     my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config); 
 8622:     my ($scanlines,$scan_data)=&scantron_getfile();
 8623:     my $classlist=&Apache::loncoursedata::get_classlist();
 8624:     my %idmap=&username_to_idmap($classlist);
 8625:     my $navmap=Apache::lonnavmaps::navmap->new();
 8626:     unless (ref($navmap)) {
 8627:         $r->print(&navmap_errormsg());
 8628:         return '';
 8629:     }
 8630:     my $map=$navmap->getResourceByUrl($sequence);
 8631:     my ($randomorder,$randompick,@master_seq,%symb_to_resource,%grader_partids_by_symb,
 8632:         %grader_randomlists_by_symb);
 8633:     if (ref($map)) {
 8634:         $randomorder = $map->randomorder();
 8635:         $randompick = $map->randompick();
 8636:     } else {
 8637:         $r->print(&navmap_errormsg());
 8638:         return '';
 8639:     }
 8640:     my $nav_error;
 8641:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 8642:     if ($randomorder || $randompick) {
 8643:         $nav_error = &get_master_seq(\@resources,\@master_seq,\%symb_to_resource);
 8644:         if ($nav_error) {
 8645:             $r->print(&navmap_errormsg());
 8646:             return '';
 8647:         }
 8648:     }
 8649:     &graders_resources_pass(\@resources,\%grader_partids_by_symb,
 8650:                             \%grader_randomlists_by_symb,$bubbles_per_row);
 8651: 
 8652:     my ($uname,$udom);
 8653:     my $result= <<SCANTRONFORM;
 8654: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
 8655:   <input type="hidden" name="command" value="scantron_configphase" />
 8656:   $default_form_data
 8657: SCANTRONFORM
 8658:     $r->print($result);
 8659: 
 8660:     my @delayqueue;
 8661:     my (%completedstudents,%scandata);
 8662:     
 8663:     my $lock=&Apache::lonnet::set_lock(&mt('Grading bubblesheet exam'));
 8664:     my $count=&get_todo_count($scanlines,$scan_data);
 8665:     my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,$count);
 8666:     &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,'Processing first student');
 8667:     $r->print('<br />');
 8668:     my $start=&Time::HiRes::time();
 8669:     my $i=-1;
 8670:     my $started;
 8671: 
 8672:     &scantron_get_maxbubble(\$nav_error,\%scantron_config); # Need the bubble lines array to parse.
 8673:     if ($nav_error) {
 8674:         $r->print(&navmap_errormsg());
 8675:         return '';
 8676:     }
 8677: 
 8678:     # If an ssi failed in scantron_get_maxbubble, put an error message out to
 8679:     # the user and return.
 8680: 
 8681:     if ($ssi_error) {
 8682: 	$r->print("</form>");
 8683: 	&ssi_print_error($r);
 8684:         &Apache::lonnet::remove_lock($lock);
 8685: 	return '';		# Dunno why the other returns return '' rather than just returning.
 8686:     }
 8687: 
 8688:     my %lettdig = &Apache::lonnet::letter_to_digits();
 8689:     my $numletts = scalar(keys(%lettdig));
 8690:     my %orderedforcode;
 8691: 
 8692:     while ($i<$scanlines->{'count'}) {
 8693:  	($uname,$udom)=('','');
 8694:  	$i++;
 8695:  	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 8696:  	if ($line=~/^[\s\cz]*$/) { next; }
 8697: 	if ($started) {
 8698: 	    &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
 8699: 	}
 8700: 	$started=1;
 8701:         my %respnumlookup = ();
 8702:         my %startline = ();
 8703:         my $total;
 8704:  	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 8705:                                                  $scan_data,undef,\%idmap,$randomorder,
 8706:                                                  $randompick,$sequence,\@master_seq,
 8707:                                                  \%symb_to_resource,\%grader_partids_by_symb,
 8708:                                                  \%orderedforcode,\%respnumlookup,\%startline,
 8709:                                                  \$total);
 8710:  	unless ($uname=&scantron_find_student($scan_record,$scan_data,
 8711:  					      \%idmap,$i)) {
 8712:   	    &scantron_add_delay(\@delayqueue,$line,
 8713:  				'Unable to find a student that matches',1);
 8714:  	    next;
 8715:   	}
 8716:  	if (exists $completedstudents{$uname}) {
 8717:  	    &scantron_add_delay(\@delayqueue,$line,
 8718:  				'Student '.$uname.' has multiple sheets',2);
 8719:  	    next;
 8720:  	}
 8721:         my $usec = $classlist->{$uname}->[&Apache::loncoursedata::CL_SECTION];
 8722:         my $user = $uname.':'.$usec;
 8723:   	($uname,$udom)=split(/:/,$uname);
 8724: 
 8725:         my $scancode;
 8726:         if ((exists($scan_record->{'scantron.CODE'})) &&
 8727:             (&Apache::lonnet::validCODE($scan_record->{'scantron.CODE'}))) {
 8728:             $scancode = $scan_record->{'scantron.CODE'};
 8729:         } else {
 8730:             $scancode = '';
 8731:         }
 8732: 
 8733:         my @mapresources = @resources;
 8734:         if ($randomorder || $randompick) {
 8735:             @mapresources = 
 8736:                 &users_order($user,$scancode,$sequence,\@master_seq,\%symb_to_resource,
 8737:                              \%orderedforcode);
 8738:         }
 8739:         my (%partids_by_symb,$res_error);
 8740:         foreach my $resource (@mapresources) {
 8741:             my $ressymb;
 8742:             if (ref($resource)) {
 8743:                 $ressymb = $resource->symb();
 8744:             } else {
 8745:                 $res_error = 1;
 8746:                 last;
 8747:             }
 8748:             if ((exists($grader_randomlists_by_symb{$ressymb})) ||
 8749:                 (ref($grader_partids_by_symb{$ressymb}) ne 'ARRAY')) {
 8750:                 my $currcode;
 8751:                 if (exists($grader_randomlists_by_symb{$ressymb})) {
 8752:                     $currcode = $scancode;
 8753:                 }
 8754:                 my ($analysis,$parts) =
 8755:                     &scantron_partids_tograde($resource,$env{'request.course.id'},
 8756:                                               $uname,$udom,undef,$bubbles_per_row,
 8757:                                               $currcode);
 8758:                 $partids_by_symb{$ressymb} = $parts;
 8759:             } else {
 8760:                 $partids_by_symb{$ressymb} = $grader_partids_by_symb{$ressymb};
 8761:             }
 8762:         }
 8763: 
 8764:         if ($res_error) {
 8765:             &scantron_add_delay(\@delayqueue,$line,
 8766:                                 'An error occurred while grading student '.$uname,2);
 8767:             next;
 8768:         }
 8769: 
 8770: 	&Apache::lonxml::clear_problem_counter();
 8771:   	&Apache::lonnet::appenv($scan_record);
 8772: 
 8773: 	if (&scantron_clear_skip($scanlines,$scan_data,$i)) {
 8774: 	    &scantron_putfile($scanlines,$scan_data);
 8775: 	}
 8776: 	
 8777:         if (&grade_student_bubbles($r,$uname,$udom,$scan_record,$scancode,
 8778:                                    \@mapresources,\%partids_by_symb,
 8779:                                    $bubbles_per_row,$randomorder,$randompick,
 8780:                                    \%respnumlookup,\%startline) 
 8781:             eq 'ssi_error') {
 8782:             $ssi_error = 0; # So end of handler error message does not trigger.
 8783:             $r->print("</form>");
 8784:             &ssi_print_error($r);
 8785:             &Apache::lonnet::remove_lock($lock);
 8786:             return '';      # Why return ''?  Beats me.
 8787:         }
 8788: 
 8789:         if (($scancode) && ($randomorder || $randompick)) {
 8790:             my $parmresult =
 8791:                 &Apache::lonparmset::storeparm_by_symb($symb,
 8792:                                                        '0_examcode',2,$scancode,
 8793:                                                        'string_examcode',$uname,
 8794:                                                        $udom);
 8795:         }
 8796: 	$completedstudents{$uname}={'line'=>$line};
 8797:         if ($env{'form.verifyrecord'}) {
 8798:             my $lastpos = $env{'form.scantron_maxbubble'}*$scantron_config{'Qlength'};
 8799:             if ($randompick) {
 8800:                 if ($total) {
 8801:                     $lastpos = $total*$scantron_config{'Qlength'};
 8802:                 }
 8803:             }
 8804: 
 8805:             my $studentdata = substr($line,$scantron_config{'Qstart'}-1,$lastpos);
 8806:             chomp($studentdata);
 8807:             $studentdata =~ s/\r$//;
 8808:             my $studentrecord = '';
 8809:             my $counter = -1;
 8810:             foreach my $resource (@mapresources) {
 8811:                 my $ressymb = $resource->symb();
 8812:                 ($counter,my $recording) =
 8813:                     &verify_scantron_grading($resource,$udom,$uname,$env{'request.course.id'},
 8814:                                              $counter,$studentdata,$partids_by_symb{$ressymb},
 8815:                                              \%scantron_config,\%lettdig,$numletts,$randomorder,
 8816:                                              $randompick,\%respnumlookup,\%startline);
 8817:                 $studentrecord .= $recording;
 8818:             }
 8819:             if ($studentrecord ne $studentdata) {
 8820:                 &Apache::lonxml::clear_problem_counter();
 8821:                 if (&grade_student_bubbles($r,$uname,$udom,$scan_record,$scancode,
 8822:                                            \@mapresources,\%partids_by_symb,
 8823:                                            $bubbles_per_row,$randomorder,$randompick,
 8824:                                            \%respnumlookup,\%startline) 
 8825:                     eq 'ssi_error') {
 8826:                     $ssi_error = 0; # So end of handler error message does not trigger.
 8827:                     $r->print("</form>");
 8828:                     &ssi_print_error($r);
 8829:                     &Apache::lonnet::remove_lock($lock);
 8830:                     delete($completedstudents{$uname});
 8831:                     return '';
 8832:                 }
 8833:                 $counter = -1;
 8834:                 $studentrecord = '';
 8835:                 foreach my $resource (@mapresources) {
 8836:                     my $ressymb = $resource->symb();
 8837:                     ($counter,my $recording) =
 8838:                         &verify_scantron_grading($resource,$udom,$uname,$env{'request.course.id'},
 8839:                                                  $counter,$studentdata,$partids_by_symb{$ressymb},
 8840:                                                  \%scantron_config,\%lettdig,$numletts,
 8841:                                                  $randomorder,$randompick,\%respnumlookup,
 8842:                                                  \%startline);
 8843:                     $studentrecord .= $recording;
 8844:                 }
 8845:                 if ($studentrecord ne $studentdata) {
 8846:                     $r->print('<p><span class="LC_warning">');
 8847:                     if ($scancode eq '') {
 8848:                         $r->print(&mt('Mismatch grading bubblesheet for user: [_1] with ID: [_2].',
 8849:                                   $uname.':'.$udom,$scan_record->{'scantron.ID'}));
 8850:                     } else {
 8851:                         $r->print(&mt('Mismatch grading bubblesheet for user: [_1] with ID: [_2] and CODE: [_3].',
 8852:                                   $uname.':'.$udom,$scan_record->{'scantron.ID'},$scancode));
 8853:                     }
 8854:                     $r->print('</span><br />'.&Apache::loncommon::start_data_table()."\n".
 8855:                               &Apache::loncommon::start_data_table_header_row()."\n".
 8856:                               '<th>'.&mt('Source').'</th><th>'.&mt('Bubbled responses').'</th>'.
 8857:                               &Apache::loncommon::end_data_table_header_row()."\n".
 8858:                               &Apache::loncommon::start_data_table_row().
 8859:                               '<td>'.&mt('Bubblesheet').'</td>'.
 8860:                               '<td><span class="LC_nobreak" style="white-space: pre;"><tt>'.$studentdata.'</tt></span></td>'.
 8861:                               &Apache::loncommon::end_data_table_row().
 8862:                               &Apache::loncommon::start_data_table_row().
 8863:                               '<td>'.&mt('Stored submissions').'</td>'.
 8864:                               '<td><span class="LC_nobreak" style="white-space: pre;"><tt>'.$studentrecord.'</tt></span></td>'."\n".
 8865:                               &Apache::loncommon::end_data_table_row().
 8866:                               &Apache::loncommon::end_data_table().'</p>');
 8867:                 } else {
 8868:                     $r->print('<br /><span class="LC_warning">'.
 8869:                              &mt('A second grading pass was needed for user: [_1] with ID: [_2], because a mismatch was seen on the first pass.',$uname.':'.$udom,$scan_record->{'scantron.ID'}).'<br />'.
 8870:                              &mt("As a consequence, this user's submission history records two tries.").
 8871:                                  '</span><br />');
 8872:                 }
 8873:             }
 8874:         }
 8875:         if (&Apache::loncommon::connection_aborted($r)) { last; }
 8876:     } continue {
 8877: 	&Apache::lonxml::clear_problem_counter();
 8878: 	&Apache::lonnet::delenv('scantron.');
 8879:     }
 8880:     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 8881:     &Apache::lonnet::remove_lock($lock);
 8882: #    my $lasttime = &Time::HiRes::time()-$start;
 8883: #    $r->print("<p>took $lasttime</p>");
 8884: 
 8885:     $r->print("</form>");
 8886:     return '';
 8887: }
 8888: 
 8889: sub graders_resources_pass {
 8890:     my ($resources,$grader_partids_by_symb,$grader_randomlists_by_symb,
 8891:         $bubbles_per_row) = @_;
 8892:     if ((ref($resources) eq 'ARRAY') && (ref($grader_partids_by_symb)) && 
 8893:         (ref($grader_randomlists_by_symb) eq 'HASH')) {
 8894:         foreach my $resource (@{$resources}) {
 8895:             my $ressymb = $resource->symb();
 8896:             my ($analysis,$parts) =
 8897:                 &scantron_partids_tograde($resource,$env{'request.course.id'},
 8898:                                           $env{'user.name'},$env{'user.domain'},
 8899:                                           1,$bubbles_per_row);
 8900:             $grader_partids_by_symb->{$ressymb} = $parts;
 8901:             if (ref($analysis) eq 'HASH') {
 8902:                 if (ref($analysis->{'parts_withrandomlist'}) eq 'ARRAY') {
 8903:                     $grader_randomlists_by_symb->{$ressymb} =
 8904:                         $analysis->{'parts_withrandomlist'};
 8905:                 }
 8906:             }
 8907:         }
 8908:     }
 8909:     return;
 8910: }
 8911: 
 8912: =pod
 8913: 
 8914: =item users_order
 8915: 
 8916:   Returns array of resources in current map, ordered based on either CODE,
 8917:   if this is a CODEd exam, or based on student's identity if this is a 
 8918:   "NAMEd" exam.
 8919: 
 8920:   Should be used when randomorder and/or randompick applied when the 
 8921:   corresponding exam was printed, prior to students completing bubblesheets 
 8922:   for the version of the exam the student received.
 8923: 
 8924: =cut
 8925: 
 8926: sub users_order  {
 8927:     my ($user,$scancode,$mapurl,$master_seq,$symb_to_resource,$orderedforcode) = @_;
 8928:     my @mapresources;
 8929:     unless ((ref($master_seq) eq 'ARRAY') && (ref($symb_to_resource) eq 'HASH')) {
 8930:         return @mapresources;
 8931:     }
 8932:     if ($scancode) {
 8933:         if ((ref($orderedforcode) eq 'HASH') && (ref($orderedforcode->{$scancode}) eq 'ARRAY')) {
 8934:             @mapresources = @{$orderedforcode->{$scancode}};
 8935:         } else {
 8936:             $env{'form.CODE'} = $scancode;
 8937:             my $actual_seq =
 8938:                 &Apache::lonprintout::master_seq_to_person_seq($mapurl,
 8939:                                                                $master_seq,
 8940:                                                                $user,$scancode,1);
 8941:             if (ref($actual_seq) eq 'ARRAY') {
 8942:                 @mapresources = map { $symb_to_resource->{$_}; } @{$actual_seq};
 8943:                 if (ref($orderedforcode) eq 'HASH') {
 8944:                     if (@mapresources > 0) { 
 8945:                         $orderedforcode->{$scancode} = \@mapresources;
 8946:                     }
 8947:                 }
 8948:             }
 8949:             delete($env{'form.CODE'});
 8950:         }
 8951:     } else {
 8952:         my $actual_seq =
 8953:             &Apache::lonprintout::master_seq_to_person_seq($mapurl,
 8954:                                                            $master_seq,
 8955:                                                            $user,undef,1);
 8956:         if (ref($actual_seq) eq 'ARRAY') {
 8957:             @mapresources = 
 8958:                 map { $symb_to_resource->{$_}; } @{$actual_seq};
 8959:         }
 8960:     }
 8961:     return @mapresources;
 8962: }
 8963: 
 8964: sub grade_student_bubbles {
 8965:     my ($r,$uname,$udom,$scan_record,$scancode,$resources,$parts,$bubbles_per_row,
 8966:         $randomorder,$randompick,$respnumlookup,$startline) = @_;
 8967:     my $uselookup = 0;
 8968:     if (($randomorder || $randompick) && (ref($respnumlookup) eq 'HASH') &&
 8969:         (ref($startline) eq 'HASH')) {
 8970:         $uselookup = 1;
 8971:     }
 8972: 
 8973:     if (ref($resources) eq 'ARRAY') {
 8974:         my $count = 0;
 8975:         foreach my $resource (@{$resources}) {
 8976:             my $ressymb = $resource->symb();
 8977:             my %form = ('submitted'      => 'scantron',
 8978:                         'grade_target'   => 'grade',
 8979:                         'grade_username' => $uname,
 8980:                         'grade_domain'   => $udom,
 8981:                         'grade_courseid' => $env{'request.course.id'},
 8982:                         'grade_symb'     => $ressymb,
 8983:                         'CODE'           => $scancode
 8984:                        );
 8985:             if ($bubbles_per_row ne '') {
 8986:                 $form{'bubbles_per_row'} = $bubbles_per_row;
 8987:             }
 8988:             if ($env{'form.scantron_lastbubblepoints'} ne '') {
 8989:                 $form{'scantron_lastbubblepoints'} = $env{'form.scantron_lastbubblepoints'};
 8990:             }
 8991:             if (ref($parts) eq 'HASH') {
 8992:                 if (ref($parts->{$ressymb}) eq 'ARRAY') {
 8993:                     foreach my $part (@{$parts->{$ressymb}}) {
 8994:                         if ($uselookup) {
 8995:                             $form{'scantron_questnum_start.'.$part} = $startline->{$count} + 1;
 8996:                         } else {
 8997:                             $form{'scantron_questnum_start.'.$part} =
 8998:                                 1+$env{'form.scantron.first_bubble_line.'.$count};
 8999:                         }
 9000:                         $count++;
 9001:                     }
 9002:                 }
 9003:             }
 9004:             my $result=&ssi_with_retries($resource->src(),$ssi_retries,%form);
 9005:             return 'ssi_error' if ($ssi_error);
 9006:             last if (&Apache::loncommon::connection_aborted($r));
 9007:         }
 9008:     }
 9009:     return;
 9010: }
 9011: 
 9012: sub scantron_upload_scantron_data {
 9013:     my ($r,$symb) = @_;
 9014:     my $dom = $env{'request.role.domain'};
 9015:     my ($formatoptions,$formattitle,$formatjs) = &scantron_upload_dataformat($dom);
 9016:     my $domdesc = &Apache::lonnet::domain($dom,'description');
 9017:     $r->print(&Apache::loncommon::coursebrowser_javascript($dom));
 9018:     my $select_link=&Apache::loncommon::selectcourse_link('rules','courseid',
 9019: 							  'domainid',
 9020: 							  'coursename',$dom);
 9021:     my $syllabuslink = '<a href="javascript:ToSyllabus();">'.&mt('Syllabus').'</a>'.
 9022:                        ('&nbsp'x2).&mt('(shows course personnel)'); 
 9023:     my $default_form_data=&defaultFormData($symb);
 9024:     my $nofile_alert = &mt('Please use the browse button to select a file from your local directory.');
 9025:     &js_escape(\$nofile_alert);
 9026:     my $nocourseid_alert = &mt("Please use the 'Select Course' link to open a separate window where you can search for a course to which a file can be uploaded.");
 9027:     &js_escape(\$nocourseid_alert);
 9028:     $r->print(&Apache::lonhtmlcommon::scripttag('
 9029:     function checkUpload(formname) {
 9030: 	if (formname.upfile.value == "") {
 9031: 	    alert("'.$nofile_alert.'");
 9032: 	    return false;
 9033: 	}
 9034:         if (formname.courseid.value == "") {
 9035:             alert("'.$nocourseid_alert.'");
 9036:             return false;
 9037:         }
 9038: 	formname.submit();
 9039:     }
 9040: 
 9041:     function ToSyllabus() {
 9042:         var cdom = '."'$dom'".';
 9043:         var cnum = document.rules.courseid.value;
 9044:         if (cdom == "" || cdom == null) {
 9045:             return;
 9046:         }
 9047:         if (cnum == "" || cnum == null) {
 9048:            return;
 9049:         }
 9050:         syllwin=window.open("/public/"+cdom+"/"+cnum+"/syllabus","LONCAPASyllabus",
 9051:                             "height=350,width=350,scrollbars=yes,menubar=no");
 9052:         return;
 9053:     }
 9054: 
 9055:     '.$formatjs.'
 9056: '));
 9057:     $r->print('
 9058: <h3>'.&mt('Send bubblesheet data to a course').'</h3>
 9059: 
 9060: <form enctype="multipart/form-data" action="/adm/grades" name="rules" method="post">
 9061: '.$default_form_data.
 9062:   &Apache::lonhtmlcommon::start_pick_box().
 9063:   &Apache::lonhtmlcommon::row_title(&mt('Course ID')).
 9064:   '<input name="courseid" type="text" size="30" />'.$select_link.
 9065:   &Apache::lonhtmlcommon::row_closure().
 9066:   &Apache::lonhtmlcommon::row_title(&mt('Course Name')).
 9067:   '<input name="coursename" type="text" size="30" />'.$syllabuslink.
 9068:   &Apache::lonhtmlcommon::row_closure().
 9069:   &Apache::lonhtmlcommon::row_title(&mt('Domain')).
 9070:   '<input name="domainid" type="hidden" />'.$domdesc.
 9071:   &Apache::lonhtmlcommon::row_closure());
 9072:     if ($formatoptions) {
 9073:         $r->print(&Apache::lonhtmlcommon::row_title($formattitle).$formatoptions.
 9074:                   &Apache::lonhtmlcommon::row_closure());
 9075:     }
 9076:     $r->print(
 9077:   &Apache::lonhtmlcommon::row_title(&mt('File to upload')).
 9078:   '<input type="file" name="upfile" size="50" />'.
 9079:   &Apache::lonhtmlcommon::row_closure(1).
 9080:   &Apache::lonhtmlcommon::end_pick_box().'<br />
 9081: 
 9082: <input name="command" value="scantronupload_save" type="hidden" />
 9083: <input type="button" onclick="javascript:checkUpload(this.form);" value="'.&mt('Upload Bubblesheet Data').'" />
 9084: </form>
 9085: ');
 9086:     return '';
 9087: }
 9088: 
 9089: sub scantron_upload_dataformat {
 9090:     my ($dom) = @_;
 9091:     my ($formatoptions,$formattitle,$formatjs);
 9092:     $formatjs = <<'END';
 9093: function toggleScantab(form) {
 9094:    return;
 9095: }
 9096: END
 9097:     my %domconfig = &Apache::lonnet::get_dom('configuration',['scantron'],$dom);
 9098:     if (ref($domconfig{'scantron'}) eq 'HASH') {
 9099:         if (ref($domconfig{'scantron'}{'config'}) eq 'HASH') {
 9100:             if (keys(%{$domconfig{'scantron'}{'config'}}) > 1) {
 9101:                 if (($domconfig{'scantron'}{'config'}{'dat'}) &&
 9102:                     (ref($domconfig{'scantron'}{'config'}{'csv'}) eq 'HASH')) {
 9103:                     if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {  
 9104:                         if (keys(%{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}})) {
 9105:                             my ($onclick,$formatextra,$singleline);
 9106:                             my @lines = &Apache::lonnet::get_scantronformat_file();
 9107:                             my $count = 0;
 9108:                             foreach my $line (@lines) {
 9109:                                 next if ($line =~ /^#/);
 9110:                                 $singleline = $line;
 9111:                                 $count ++;
 9112:                             }
 9113:                             if ($count > 1) {
 9114:                                 $formatextra = '<div style="display:none" id="bubbletype">'.
 9115:                                                '<span class="LC_nobreak">'.
 9116:                                                &mt('Bubblesheet type:').'&nbsp;'.
 9117:                                                &scantron_scantab().'</span></div>';
 9118:                                 $onclick = ' onclick="toggleScantab(this.form);"';
 9119:                                 $formatjs = <<"END";
 9120: function toggleScantab(form) {
 9121:     var divid = 'bubbletype';
 9122:     if (document.getElementById(divid)) {
 9123:         var radioname = 'fileformat';
 9124:         var num = form.elements[radioname].length;
 9125:         if (num) {
 9126:             for (var i=0; i<num; i++) {
 9127:                 if (form.elements[radioname][i].checked) {
 9128:                     var chosen = form.elements[radioname][i].value;
 9129:                     if (chosen == 'dat') {
 9130:                         document.getElementById(divid).style.display = 'none';
 9131:                     } else if (chosen == 'csv') {
 9132:                         document.getElementById(divid).style.display = 'block';
 9133:                     }
 9134:                 }
 9135:             }
 9136:         }
 9137:     }
 9138:     return;
 9139: }
 9140: 
 9141: END
 9142:                             } elsif ($count == 1) {
 9143:                                 my $formatname = (split(/:/,$singleline,2))[0];
 9144:                                 $formatextra = '<input type="hidden" name="scantron_format" value="'.$formatname.'" />';
 9145:                             }
 9146:                             $formattitle = &mt('File format');
 9147:                             $formatoptions = '<label><input name="fileformat" type="radio" value="dat" checked="checked"'.$onclick.' />'.
 9148:                                              &mt('Plain Text (no delimiters)').
 9149:                                              '</label>'.('&nbsp;'x2).
 9150:                                              '<label><input name="fileformat" type="radio" value="csv"'.$onclick.' />'.
 9151:                                              &mt('Comma separated values').'</label>'.$formatextra;
 9152:                         }
 9153:                     }
 9154:                 }
 9155:             } elsif (keys(%{$domconfig{'scantron'}{'config'}}) == 1) {
 9156:                 if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {
 9157:                     if (keys(%{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}})) {
 9158:                         $formattitle = &mt('Bubblesheet type');
 9159:                         $formatoptions = &scantron_scantab();
 9160:                     }
 9161:                 }
 9162:             }
 9163:         }
 9164:     }
 9165:     return ($formatoptions,$formattitle,$formatjs);
 9166: }
 9167: 
 9168: sub scantron_upload_scantron_data_save {
 9169:     my ($r,$symb) = @_;
 9170:     my $doanotherupload=
 9171: 	'<br /><form action="/adm/grades" method="post">'."\n".
 9172: 	'<input type="hidden" name="command" value="scantronupload" />'."\n".
 9173: 	'<input type="submit" name="submit" value="'.&mt('Do Another Upload').'" />'."\n".
 9174: 	'</form>'."\n";
 9175:     if (!&Apache::lonnet::allowed('usc',$env{'form.domainid'}) &&
 9176: 	!&Apache::lonnet::allowed('usc',
 9177: 			    $env{'form.domainid'}.'_'.$env{'form.courseid'})) {
 9178: 	$r->print(&mt("You are not allowed to upload bubblesheet data to the requested course.")."<br />");
 9179: 	unless ($symb) {
 9180: 	    $r->print($doanotherupload);
 9181: 	}
 9182: 	return '';
 9183:     }
 9184:     my %coursedata=&Apache::lonnet::coursedescription($env{'form.domainid'}.'_'.$env{'form.courseid'});
 9185:     my $uploadedfile;
 9186:     $r->print('<p>'.&mt('Uploading file to [_1]','"'.$coursedata{'description'}.'"').'</p>');
 9187:     if (length($env{'form.upfile'}) < 2) {
 9188:         $r->print(
 9189:             &Apache::lonhtmlcommon::confirm_success(
 9190:                 &mt('The file: [_1] you attempted to upload contained no information. Please check that you entered the correct filename.',
 9191:                         '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>'),1));
 9192:     } else {
 9193:         my %domconfig = &Apache::lonnet::get_dom('configuration',['scantron'],$env{'form.domainid'});
 9194:         my $parser;
 9195:         if (ref($domconfig{'scantron'}) eq 'HASH') {
 9196:             if (ref($domconfig{'scantron'}{'config'}) eq 'HASH') {
 9197:                 my $is_csv;
 9198:                 my @possibles = keys(%{$domconfig{'scantron'}{'config'}});
 9199:                 if (@possibles > 1) {
 9200:                     if ($env{'form.fileformat'} eq 'csv') {
 9201:                         if (ref($domconfig{'scantron'}{'config'}{'csv'}) eq 'HASH') {
 9202:                             if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {
 9203:                                 if (keys(%{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}}) > 1) {
 9204:                                     $is_csv = 1;
 9205:                                 }
 9206:                             }
 9207:                         }
 9208:                     }
 9209:                 } elsif (@possibles == 1) {
 9210:                     if (ref($domconfig{'scantron'}{'config'}{'csv'}) eq 'HASH') {
 9211:                         if (ref($domconfig{'scantron'}{'config'}{'csv'}{'fields'}) eq 'HASH') {
 9212:                             if (keys(%{$domconfig{'scantron'}{'config'}{'csv'}{'fields'}}) > 1) {
 9213:                                 $is_csv = 1;
 9214:                             }
 9215:                         }
 9216:                     }
 9217:                 }
 9218:                 if ($is_csv) {
 9219:                    $parser = $domconfig{'scantron'}{'config'}{'csv'};
 9220:                 }
 9221:             }
 9222:         }
 9223:         my $result =
 9224:             &Apache::lonnet::userfileupload('upfile','scantron','scantron',$parser,'','',
 9225:                                             $env{'form.courseid'},$env{'form.domainid'});
 9226:         if ($result =~ m{^/uploaded/}) {
 9227:             $r->print(
 9228:                 &Apache::lonhtmlcommon::confirm_success(&mt('Upload successful')).'<br />'.
 9229:                 &mt('Uploaded [_1] bytes of data into location: [_2]',
 9230:                         (length($env{'form.upfile'})-1),
 9231:                         '<span class="LC_filename">'.$result.'</span>'));
 9232:             ($uploadedfile) = ($result =~ m{/([^/]+)$});
 9233:             $r->print(&validate_uploaded_scantron_file($env{'form.domainid'},
 9234:                                                        $env{'form.courseid'},$uploadedfile));
 9235:         } else {
 9236:             $r->print(
 9237:                 &Apache::lonhtmlcommon::confirm_success(&mt('Upload failed'),1).'<br />'.
 9238:                     &mt('An error ([_1]) occurred when attempting to upload the file: [_2]',
 9239:                           $result,
 9240: 			  '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>'));
 9241: 	}
 9242:     }
 9243:     if ($symb) {
 9244: 	$r->print(&scantron_selectphase($r,$uploadedfile,$symb));
 9245:     } else {
 9246: 	$r->print($doanotherupload);
 9247:     }
 9248:     return '';
 9249: }
 9250: 
 9251: sub validate_uploaded_scantron_file {
 9252:     my ($cdom,$cname,$fname) = @_;
 9253:     my $scanlines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.$fname);
 9254:     my @lines;
 9255:     if ($scanlines ne '-1') {
 9256:         @lines=split("\n",$scanlines,-1);
 9257:     }
 9258:     my $output;
 9259:     if (@lines) {
 9260:         my (%counts,$max_match_format);
 9261:         my ($found_match_count,$max_match_count,$max_match_pct) = (0,0,0);
 9262:         my $classlist = &Apache::loncoursedata::get_classlist($cdom,$cname);
 9263:         my %idmap = &username_to_idmap($classlist);
 9264:         foreach my $key (keys(%idmap)) {
 9265:             my $lckey = lc($key);
 9266:             $idmap{$lckey} = $idmap{$key};
 9267:         }
 9268:         my %unique_formats;
 9269:         my @formatlines = &Apache::lonnet::get_scantronformat_file();
 9270:         foreach my $line (@formatlines) {
 9271:             chomp($line);
 9272:             my @config = split(/:/,$line);
 9273:             my $idstart = $config[5];
 9274:             my $idlength = $config[6];
 9275:             if (($idstart ne '') && ($idlength > 0)) {
 9276:                 if (ref($unique_formats{$idstart.':'.$idlength}) eq 'ARRAY') {
 9277:                     push(@{$unique_formats{$idstart.':'.$idlength}},$config[0].':'.$config[1]); 
 9278:                 } else {
 9279:                     $unique_formats{$idstart.':'.$idlength} = [$config[0].':'.$config[1]];
 9280:                 }
 9281:             }
 9282:         }
 9283:         foreach my $key (keys(%unique_formats)) {
 9284:             my ($idstart,$idlength) = split(':',$key);
 9285:             %{$counts{$key}} = (
 9286:                                'found'   => 0,
 9287:                                'total'   => 0,
 9288:                               );
 9289:             foreach my $line (@lines) {
 9290:                 next if ($line =~ /^#/);
 9291:                 next if ($line =~ /^[\s\cz]*$/);
 9292:                 my $id = substr($line,$idstart-1,$idlength);
 9293:                 $id = lc($id);
 9294:                 if (exists($idmap{$id})) {
 9295:                     $counts{$key}{'found'} ++;
 9296:                 }
 9297:                 $counts{$key}{'total'} ++;
 9298:             }
 9299:             if ($counts{$key}{'total'}) {
 9300:                 my $percent_match = (100*$counts{$key}{'found'})/($counts{$key}{'total'});
 9301:                 if (($max_match_format eq '') || ($percent_match > $max_match_pct)) {
 9302:                     $max_match_pct = $percent_match;
 9303:                     $max_match_format = $key;
 9304:                     $found_match_count = $counts{$key}{'found'};
 9305:                     $max_match_count = $counts{$key}{'total'};
 9306:                 }
 9307:             }
 9308:         }
 9309:         if (ref($unique_formats{$max_match_format}) eq 'ARRAY') {
 9310:             my $format_descs;
 9311:             my $numwithformat = @{$unique_formats{$max_match_format}};
 9312:             for (my $i=0; $i<$numwithformat; $i++) {
 9313:                 my ($name,$desc) = split(':',$unique_formats{$max_match_format}[$i]);
 9314:                 if ($i<$numwithformat-2) {
 9315:                     $format_descs .= '"<i>'.$desc.'</i>", ';
 9316:                 } elsif ($i==$numwithformat-2) {
 9317:                     $format_descs .= '"<i>'.$desc.'</i>" '.&mt('and').' ';
 9318:                 } elsif ($i==$numwithformat-1) {
 9319:                     $format_descs .= '"<i>'.$desc.'</i>"';
 9320:                 }
 9321:             }
 9322:             my $showpct = sprintf("%.0f",$max_match_pct).'%';
 9323:             $output .= '<br />';
 9324:             if ($found_match_count == $max_match_count) {
 9325:                 # 100% matching entries
 9326:                 $output .= &Apache::lonhtmlcommon::confirm_success(
 9327:                      &mt('Comparison of student IDs: [_1] matching ([quant,_2,entry,entries])',
 9328:                             '<b>'.$showpct.'</b>',$found_match_count)).'<br />'.
 9329:                 &mt('Comparison of student IDs in the uploaded file with'.
 9330:                     ' the course roster found matches for [_1] of the [_2] entries'.
 9331:                     ' in the file (for the format defined for [_3]).',
 9332:                         '<b>'.$showpct.'</b>','<b>'.$max_match_count.'</b>',$format_descs);
 9333:             } else {
 9334:                 # Not all entries matching? -> Show warning and additional info
 9335:                 $output .=
 9336:                     &Apache::lonhtmlcommon::confirm_success(
 9337:                         &mt('Comparison of student IDs: [_1] matching ([_2]/[quant,_3,entry,entries])',
 9338:                                 '<b>'.$showpct.'</b>',$found_match_count,$max_match_count).'<br />'.
 9339:                         &mt('Not all entries could be matched!'),1).'<br />'.
 9340:                     &mt('Comparison of student IDs in the uploaded file with'.
 9341:                         ' the course roster found matches for [_1] of the [_2] entries'.
 9342:                         ' in the file (for the format defined for [_3]).',
 9343:                             '<b>'.$showpct.'</b>','<b>'.$max_match_count.'</b>',$format_descs).
 9344:                     '<p class="LC_info">'.
 9345:                     &mt('A low percentage of matches results from one of the following:').
 9346:                     '</p><ul>'.
 9347:                     '<li>'.&mt('The file was uploaded to the wrong course.').'</li>'.
 9348:                     '<li>'.&mt('The data is not in the format expected for the domain: [_1]',
 9349:                                '<i>'.$cdom.'</i>').'</li>'.
 9350:                     '<li>'.&mt('Students did not bubble their IDs, or mis-bubbled them').'</li>'.
 9351:                     '<li>'.&mt('The course roster is not up to date.').'</li>'.
 9352:                     '</ul>';
 9353:             }
 9354:         }
 9355:     } else {
 9356:         $output = '<p class="LC_warning">'.&mt('Uploaded file contained no data').'</p>';
 9357:     }
 9358:     return $output;
 9359: }
 9360: 
 9361: sub valid_file {
 9362:     my ($requested_file)=@_;
 9363:     foreach my $filename (sort(&scantron_filenames())) {
 9364: 	if ($requested_file eq $filename) { return 1; }
 9365:     }
 9366:     return 0;
 9367: }
 9368: 
 9369: sub scantron_download_scantron_data {
 9370:     my ($r,$symb) = @_;
 9371:     my $default_form_data=&defaultFormData($symb);
 9372:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 9373:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 9374:     my $file=$env{'form.scantron_selectfile'};
 9375:     if (! &valid_file($file)) {
 9376: 	$r->print('
 9377: 	<p>
 9378: 	    '.&mt('The requested filename was invalid.').'
 9379:         </p>
 9380: ');
 9381: 	return;
 9382:     }
 9383:     my $orig='/uploaded/'.$cdom.'/'.$cname.'/scantron_orig_'.$file;
 9384:     my $corrected='/uploaded/'.$cdom.'/'.$cname.'/scantron_corrected_'.$file;
 9385:     my $skipped='/uploaded/'.$cdom.'/'.$cname.'/scantron_skipped_'.$file;
 9386:     &Apache::lonnet::allowuploaded('/adm/grades',$orig);
 9387:     &Apache::lonnet::allowuploaded('/adm/grades',$corrected);
 9388:     &Apache::lonnet::allowuploaded('/adm/grades',$skipped);
 9389:     $r->print('
 9390:     <p>
 9391: 	'.&mt('[_1]Original[_2] file as uploaded by the bubblesheet scanning office.',
 9392: 	      '<a href="'.$orig.'">','</a>').'
 9393:     </p>
 9394:     <p>
 9395: 	'.&mt('[_1]Corrections[_2], a file of corrected records that were used in grading.',
 9396: 	      '<a href="'.$corrected.'">','</a>').'
 9397:     </p>
 9398:     <p>
 9399: 	'.&mt('[_1]Skipped[_2], a file of records that were skipped.',
 9400: 	      '<a href="'.$skipped.'">','</a>').'
 9401:     </p>
 9402: ');
 9403:     return '';
 9404: }
 9405: 
 9406: sub checkscantron_results {
 9407:     my ($r,$symb) = @_;
 9408:     if (!$symb) {return '';}
 9409:     my $cid = $env{'request.course.id'};
 9410:     my %lettdig = &Apache::lonnet::letter_to_digits();
 9411:     my $numletts = scalar(keys(%lettdig));
 9412:     my $cnum = $env{'course.'.$cid.'.num'};
 9413:     my $cdom = $env{'course.'.$cid.'.domain'};
 9414:     my (undef, undef, $sequence) = &Apache::lonnet::decode_symb($env{'form.selectpage'});
 9415:     my %record;
 9416:     my %scantron_config =
 9417:         &Apache::lonnet::get_scantron_config($env{'form.scantron_format'});
 9418:     my $bubbles_per_row = &bubblesheet_bubbles_per_row(\%scantron_config);
 9419:     my ($scanlines,$scan_data)=&Apache::grades::scantron_getfile();
 9420:     my $classlist=&Apache::loncoursedata::get_classlist();
 9421:     my %idmap=&Apache::grades::username_to_idmap($classlist);
 9422:     my $navmap=Apache::lonnavmaps::navmap->new();
 9423:     unless (ref($navmap)) {
 9424:         $r->print(&navmap_errormsg());
 9425:         return '';
 9426:     }
 9427:     my $map=$navmap->getResourceByUrl($sequence);
 9428:     my ($randomorder,$randompick,@master_seq,%symb_to_resource,%grader_partids_by_symb,
 9429:         %grader_randomlists_by_symb,%orderedforcode);
 9430:     if (ref($map)) { 
 9431:         $randomorder=$map->randomorder();
 9432:         $randompick=$map->randompick();
 9433:     }
 9434:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 9435:     my $nav_error = &get_master_seq(\@resources,\@master_seq,\%symb_to_resource);
 9436:     if ($nav_error) {
 9437:         $r->print(&navmap_errormsg());
 9438:         return '';
 9439:     }
 9440:     &graders_resources_pass(\@resources,\%grader_partids_by_symb,
 9441:                             \%grader_randomlists_by_symb,$bubbles_per_row);
 9442:     my ($uname,$udom);
 9443:     my (%scandata,%lastname,%bylast);
 9444:     $r->print('
 9445: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="checkscantron">'."\n");
 9446: 
 9447:     my @delayqueue;
 9448:     my %completedstudents;
 9449: 
 9450:     my $count=&get_todo_count($scanlines,$scan_data);
 9451:     my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,$count);
 9452:     my ($username,$domain,$started);
 9453:     &scantron_get_maxbubble(\$nav_error,\%scantron_config); # Need the bubble lines array to parse.
 9454:     if ($nav_error) {
 9455:         $r->print(&navmap_errormsg());
 9456:         return '';
 9457:     }
 9458: 
 9459:     &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,'Processing first student');
 9460:     my $start=&Time::HiRes::time();
 9461:     my $i=-1;
 9462: 
 9463:     while ($i<$scanlines->{'count'}) {
 9464:         ($username,$domain,$uname)=('','','');
 9465:         $i++;
 9466:         my $line=&Apache::grades::scantron_get_line($scanlines,$scan_data,$i);
 9467:         if ($line=~/^[\s\cz]*$/) { next; }
 9468:         if ($started) {
 9469:             &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,'last student');
 9470:         }
 9471:         $started=1;
 9472:         my $scan_record=
 9473:             &Apache::grades::scantron_parse_scanline($line,$i,\%scantron_config,
 9474:                                                      $scan_data);
 9475:         unless ($uname=&scantron_find_student($scan_record,$scan_data,
 9476:                                               \%idmap,$i)) {
 9477:             &Apache::grades::scantron_add_delay(\@delayqueue,$line,
 9478:                                 'Unable to find a student that matches',1);
 9479:             next;
 9480:         }
 9481:         if (exists $completedstudents{$uname}) {
 9482:             &Apache::grades::scantron_add_delay(\@delayqueue,$line,
 9483:                                 'Student '.$uname.' has multiple sheets',2);
 9484:             next;
 9485:         }
 9486:         my $pid = $scan_record->{'scantron.ID'};
 9487:         $lastname{$pid} = $scan_record->{'scantron.LastName'};
 9488:         push(@{$bylast{$lastname{$pid}}},$pid);
 9489:         my $usec = $classlist->{$uname}->[&Apache::loncoursedata::CL_SECTION];
 9490:         my $user = $uname.':'.$usec;
 9491:         ($username,$domain)=split(/:/,$uname);
 9492: 
 9493:         my $scancode;
 9494:         if ((exists($scan_record->{'scantron.CODE'})) &&
 9495:             (&Apache::lonnet::validCODE($scan_record->{'scantron.CODE'}))) {
 9496:             $scancode = $scan_record->{'scantron.CODE'};
 9497:         } else {
 9498:             $scancode = '';
 9499:         }
 9500: 
 9501:         my @mapresources = @resources;
 9502:         my $lastpos = $env{'form.scantron_maxbubble'}*$scantron_config{'Qlength'};
 9503:         my %respnumlookup=();
 9504:         my %startline=();
 9505:         if ($randomorder || $randompick) {
 9506:             @mapresources =
 9507:                 &users_order($user,$scancode,$sequence,\@master_seq,\%symb_to_resource,
 9508:                              \%orderedforcode);
 9509:             my $total = &get_respnum_lookups($sequence,$scan_data,\%idmap,$line,
 9510:                                              $scan_record,\@master_seq,\%symb_to_resource,
 9511:                                              \%grader_partids_by_symb,\%orderedforcode,
 9512:                                              \%respnumlookup,\%startline);
 9513:             if ($randompick && $total) {
 9514:                 $lastpos = $total*$scantron_config{'Qlength'};
 9515:             }
 9516:         }
 9517:         $scandata{$pid} = substr($line,$scantron_config{'Qstart'}-1,$lastpos);
 9518:         chomp($scandata{$pid});
 9519:         $scandata{$pid} =~ s/\r$//;
 9520: 
 9521:         my $counter = -1;
 9522:         foreach my $resource (@mapresources) {
 9523:             my $parts;
 9524:             my $ressymb = $resource->symb();
 9525:             if ((exists($grader_randomlists_by_symb{$ressymb})) ||
 9526:                 (ref($grader_partids_by_symb{$ressymb}) ne 'ARRAY')) {
 9527:                 my $currcode;
 9528:                 if (exists($grader_randomlists_by_symb{$ressymb})) {
 9529:                     $currcode = $scancode;
 9530:                 }
 9531:                 (my $analysis,$parts) =
 9532:                     &scantron_partids_tograde($resource,$env{'request.course.id'},
 9533:                                               $username,$domain,undef,
 9534:                                               $bubbles_per_row,$currcode);
 9535:             } else {
 9536:                 $parts = $grader_partids_by_symb{$ressymb};
 9537:             }
 9538:             ($counter,my $recording) =
 9539:                 &verify_scantron_grading($resource,$domain,$username,$cid,$counter,
 9540:                                          $scandata{$pid},$parts,
 9541:                                          \%scantron_config,\%lettdig,$numletts,
 9542:                                          $randomorder,$randompick,
 9543:                                          \%respnumlookup,\%startline);
 9544:             $record{$pid} .= $recording;
 9545:         }
 9546:     }
 9547:     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 9548:     $r->print('<br />');
 9549:     my ($okstudents,$badstudents,$numstudents,$passed,$failed);
 9550:     $passed = 0;
 9551:     $failed = 0;
 9552:     $numstudents = 0;
 9553:     foreach my $last (sort(keys(%bylast))) {
 9554:         if (ref($bylast{$last}) eq 'ARRAY') {
 9555:             foreach my $pid (sort(@{$bylast{$last}})) {
 9556:                 my $showscandata = $scandata{$pid};
 9557:                 my $showrecord = $record{$pid};
 9558:                 $showscandata =~ s/\s/&nbsp;/g;
 9559:                 $showrecord =~ s/\s/&nbsp;/g;
 9560:                 if ($scandata{$pid} eq $record{$pid}) {
 9561:                     my $css_class = ($passed % 2)?'LC_odd_row':'LC_even_row';
 9562:                     $okstudents .= '<tr class="'.$css_class.'">'.
 9563: '<td>'.&mt('Bubblesheet').'</td><td>'.$showscandata.'</td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
 9564: '</tr>'."\n".
 9565: '<tr class="'.$css_class.'">'."\n".
 9566: '<td>'.&mt('Submissions').'</td><td>'.$showrecord.'</td></tr>'."\n";
 9567:                     $passed ++;
 9568:                 } else {
 9569:                     my $css_class = ($failed % 2)?'LC_odd_row':'LC_even_row';
 9570:                     $badstudents .= '<tr class="'.$css_class.'"><td>'.&mt('Bubblesheet').'</td><td><span class="LC_nobreak">'.$scandata{$pid}.'</span></td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
 9571: '</tr>'."\n".
 9572: '<tr class="'.$css_class.'">'."\n".
 9573: '<td>'.&mt('Submissions').'</td><td><span class="LC_nobreak">'.$record{$pid}.'</span></td>'."\n".
 9574: '</tr>'."\n";
 9575:                     $failed ++;
 9576:                 }
 9577:                 $numstudents ++;
 9578:             }
 9579:         }
 9580:     }
 9581:     $r->print(
 9582:         '<p>'
 9583:        .&mt('Comparison of bubblesheet data (including corrections) with corresponding submission records (most recent submission) for [_1][quant,_2,student][_3] ([quant,_4,bubblesheet line] per student).',
 9584:             '<b>',
 9585:             $numstudents,
 9586:             '</b>',
 9587:             $env{'form.scantron_maxbubble'})
 9588:        .'</p>'
 9589:     );
 9590:     $r->print('<p>'
 9591:              .&mt('Exact matches for [_1][quant,_2,student][_3].','<b>',$passed,'</b>')
 9592:              .'<br />'
 9593:              .&mt('Discrepancies detected for [_1][quant,_2,student][_3].','<b>',$failed,'</b>')
 9594:              .'</p>'
 9595:     );
 9596:     if ($passed) {
 9597:         $r->print(&mt('Students with exact correspondence between bubblesheet data and submissions are as follows:').'<br /><br />');
 9598:         $r->print(&Apache::loncommon::start_data_table()."\n".
 9599:                  &Apache::loncommon::start_data_table_header_row()."\n".
 9600:                  '<th>'.&mt('Source').'</th><th>'.&mt('Bubble records').'</th><th>'.&mt('Name').'</th><th>'.&mt('ID').'</th>'.
 9601:                  &Apache::loncommon::end_data_table_header_row()."\n".
 9602:                  $okstudents."\n".
 9603:                  &Apache::loncommon::end_data_table().'<br />');
 9604:     }
 9605:     if ($failed) {
 9606:         $r->print(&mt('Students with differences between bubblesheet data and submissions are as follows:').'<br /><br />');
 9607:         $r->print(&Apache::loncommon::start_data_table()."\n".
 9608:                  &Apache::loncommon::start_data_table_header_row()."\n".
 9609:                  '<th>'.&mt('Source').'</th><th>'.&mt('Bubble records').'</th><th>'.&mt('Name').'</th><th>'.&mt('ID').'</th>'.
 9610:                  &Apache::loncommon::end_data_table_header_row()."\n".
 9611:                  $badstudents."\n".
 9612:                  &Apache::loncommon::end_data_table()).'<br />'.
 9613:                  &mt('Differences can occur if submissions were modified using manual grading after a bubblesheet grading pass.').'<br />'.&mt('If unexpected discrepancies were detected, it is recommended that you inspect the original bubblesheets.');  
 9614:     }
 9615:     $r->print('</form><br />');
 9616:     return;
 9617: }
 9618: 
 9619: sub verify_scantron_grading {
 9620:     my ($resource,$domain,$username,$cid,$counter,$scandata,$partids,
 9621:         $scantron_config,$lettdig,$numletts,$randomorder,$randompick,
 9622:         $respnumlookup,$startline) = @_;
 9623:     my ($record,%expected,%startpos);
 9624:     return ($counter,$record) if (!ref($resource));
 9625:     return ($counter,$record) if (!$resource->is_problem());
 9626:     my $symb = $resource->symb();
 9627:     return ($counter,$record) if (ref($partids) ne 'ARRAY');
 9628:     foreach my $part_id (@{$partids}) {
 9629:         $counter ++;
 9630:         $expected{$part_id} = 0;
 9631:         my $respnum = $counter;
 9632:         if ($randomorder || $randompick) {
 9633:             $respnum = $respnumlookup->{$counter};
 9634:             $startpos{$part_id} = $startline->{$counter} + 1;
 9635:         } else {
 9636:             $startpos{$part_id} = $env{"form.scantron.first_bubble_line.$counter"};
 9637:         }
 9638:         if ($env{"form.scantron.sub_bubblelines.$respnum"}) {
 9639:             my @sub_lines = split(/,/,$env{"form.scantron.sub_bubblelines.$respnum"});
 9640:             foreach my $item (@sub_lines) {
 9641:                 $expected{$part_id} += $item;
 9642:             }
 9643:         } else {
 9644:             $expected{$part_id} = $env{"form.scantron.bubblelines.$respnum"};
 9645:         }
 9646:     }
 9647:     if ($symb) {
 9648:         my %recorded;
 9649:         my (%returnhash) = &Apache::lonnet::restore($symb,$cid,$domain,$username);
 9650:         if ($returnhash{'version'}) {
 9651:             my %lasthash=();
 9652:             my $version;
 9653:             for ($version=1;$version<=$returnhash{'version'};$version++) {
 9654:                 foreach my $key (sort(split(/\:/,$returnhash{$version.':keys'}))) {
 9655:                     $lasthash{$key}=$returnhash{$version.':'.$key};
 9656:                 }
 9657:             }
 9658:             foreach my $key (keys(%lasthash)) {
 9659:                 if ($key =~ /\.scantron$/) {
 9660:                     my $value = &unescape($lasthash{$key});
 9661:                     my ($part_id) = ($key =~ /^resource\.(.+)\.scantron$/);
 9662:                     if ($value eq '') {
 9663:                         for (my $i=0; $i<$expected{$part_id}; $i++) {
 9664:                             for (my $j=0; $j<$scantron_config->{'length'}; $j++) {
 9665:                                 $recorded{$part_id} .= $scantron_config->{'Qoff'};
 9666:                             }
 9667:                         }
 9668:                     } else {
 9669:                         my @tocheck;
 9670:                         my @items = split(//,$value);
 9671:                         if (($scantron_config->{'Qon'} eq 'letter') ||
 9672:                             ($scantron_config->{'Qon'} eq 'number')) {
 9673:                             if (@items < $expected{$part_id}) {
 9674:                                 my $fragment = substr($scandata,$startpos{$part_id},$expected{$part_id});
 9675:                                 my @singles = split(//,$fragment);
 9676:                                 foreach my $pos (@singles) {
 9677:                                     if ($pos eq ' ') {
 9678:                                         push(@tocheck,$pos);
 9679:                                     } else {
 9680:                                         my $next = shift(@items);
 9681:                                         push(@tocheck,$next);
 9682:                                     }
 9683:                                 }
 9684:                             } else {
 9685:                                 @tocheck = @items;
 9686:                             }
 9687:                             foreach my $letter (@tocheck) {
 9688:                                 if ($scantron_config->{'Qon'} eq 'letter') {
 9689:                                     if ($letter !~ /^[A-J]$/) {
 9690:                                         $letter = $scantron_config->{'Qoff'};
 9691:                                     }
 9692:                                     $recorded{$part_id} .= $letter;
 9693:                                 } elsif ($scantron_config->{'Qon'} eq 'number') {
 9694:                                     my $digit;
 9695:                                     if ($letter !~ /^[A-J]$/) {
 9696:                                         $digit = $scantron_config->{'Qoff'};
 9697:                                     } else {
 9698:                                         $digit = $lettdig->{$letter};
 9699:                                     }
 9700:                                     $recorded{$part_id} .= $digit;
 9701:                                 }
 9702:                             }
 9703:                         } else {
 9704:                             @tocheck = @items;
 9705:                             for (my $i=0; $i<$expected{$part_id}; $i++) {
 9706:                                 my $curr_sub = shift(@tocheck);
 9707:                                 my $digit;
 9708:                                 if ($curr_sub =~ /^[A-J]$/) {
 9709:                                     $digit = $lettdig->{$curr_sub}-1;
 9710:                                 }
 9711:                                 if ($curr_sub eq 'J') {
 9712:                                     $digit += scalar($numletts);
 9713:                                 }
 9714:                                 for (my $j=0; $j<$scantron_config->{'Qlength'}; $j++) {
 9715:                                     if ($j == $digit) {
 9716:                                         $recorded{$part_id} .= $scantron_config->{'Qon'};
 9717:                                     } else {
 9718:                                         $recorded{$part_id} .= $scantron_config->{'Qoff'};
 9719:                                     }
 9720:                                 }
 9721:                             }
 9722:                         }
 9723:                     }
 9724:                 }
 9725:             }
 9726:         }
 9727:         foreach my $part_id (@{$partids}) {
 9728:             if ($recorded{$part_id} eq '') {
 9729:                 for (my $i=0; $i<$expected{$part_id}; $i++) {
 9730:                     for (my $j=0; $j<$scantron_config->{'Qlength'}; $j++) {
 9731:                         $recorded{$part_id} .= $scantron_config->{'Qoff'};
 9732:                     }
 9733:                 }
 9734:             }
 9735:             $record .= $recorded{$part_id};
 9736:         }
 9737:     }
 9738:     return ($counter,$record);
 9739: }
 9740: 
 9741: 
 9742: #-------- end of section for handling grading scantron forms -------
 9743: #
 9744: #-------------------------------------------------------------------
 9745: 
 9746: #-------------------------- Menu interface -------------------------
 9747: #
 9748: #--- Href with symb and command ---
 9749: 
 9750: sub href_symb_cmd {
 9751:     my ($symb,$cmd)=@_;
 9752:     return '/adm/grades?symb='.&HTML::Entities::encode(&Apache::lonenc::check_encrypt($symb),'<>&"').'&amp;command='.$cmd;
 9753: }
 9754: 
 9755: sub grading_menu {
 9756:     my ($request,$symb) = @_;
 9757:     if (!$symb) {return '';}
 9758: 
 9759:     my %fields = ('symb'=>&Apache::lonenc::check_encrypt($symb),
 9760:                   'command'=>'individual');
 9761:     
 9762:     my $url1a = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9763: 
 9764:     $fields{'command'}='ungraded';
 9765:     my $url1b=&Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9766: 
 9767:     $fields{'command'}='table';
 9768:     my $url1c=&Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9769: 
 9770:     $fields{'command'}='all_for_one';
 9771:     my $url1d=&Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9772: 
 9773:     $fields{'command'}='downloadfilesselect';
 9774:     my $url1e=&Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9775: 
 9776:     $fields{'command'} = 'csvform';
 9777:     my $url2 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9778:     
 9779:     $fields{'command'} = 'processclicker';
 9780:     my $url3 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9781:     
 9782:     $fields{'command'} = 'scantron_selectphase';
 9783:     my $url4 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9784: 
 9785:     $fields{'command'} = 'initialverifyreceipt';
 9786:     my $url5 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 9787:     
 9788:     my @menu = ({	categorytitle=>'Hand Grading',
 9789:             items =>[
 9790:                         {	linktext => 'Select individual students to grade',
 9791:                     		url => $url1a,
 9792:                     		permission => 'F',
 9793:                     		icon => 'grade_students.png',
 9794:                     		linktitle => 'Grade current resource for a selection of students.'
 9795:                         }, 
 9796:                         {       linktext => 'Grade ungraded submissions',
 9797:                                 url => $url1b,
 9798:                                 permission => 'F',
 9799:                                 icon => 'ungrade_sub.png',
 9800:                                 linktitle => 'Grade all submissions that have not been graded yet.'
 9801:                         },
 9802: 
 9803:                         {       linktext => 'Grading table',
 9804:                                 url => $url1c,
 9805:                                 permission => 'F',
 9806:                                 icon => 'grading_table.png',
 9807:                                 linktitle => 'Grade current resource for all students.'
 9808:                         },
 9809:                         {       linktext => 'Grade page/folder for one student',
 9810:                                 url => $url1d,
 9811:                                 permission => 'F',
 9812:                                 icon => 'grade_PageFolder.png',
 9813:                                 linktitle => 'Grade all resources in current page/sequence/folder for one student.'
 9814:                         },
 9815:                         {       linktext => 'Download submissions',
 9816:                                 url => $url1e,
 9817:                                 permission => 'F',
 9818:                                 icon => 'download_sub.png',
 9819:                                 linktitle => 'Download all students submissions.'
 9820:                         }]},
 9821:                          { categorytitle=>'Automated Grading',
 9822:                items =>[
 9823: 
 9824:                 	    {	linktext => 'Upload Scores',
 9825:                     		url => $url2,
 9826:                     		permission => 'F',
 9827:                     		icon => 'uploadscores.png',
 9828:                     		linktitle => 'Specify a file containing the class scores for current resource.'
 9829:                 	    },
 9830:                 	    {	linktext => 'Process Clicker',
 9831:                     		url => $url3,
 9832:                     		permission => 'F',
 9833:                     		icon => 'addClickerInfoFile.png',
 9834:                     		linktitle => 'Specify a file containing the clicker information for this resource.'
 9835:                 	    },
 9836:                 	    {	linktext => 'Grade/Manage/Review Bubblesheets',
 9837:                     		url => $url4,
 9838:                     		permission => 'F',
 9839:                     		icon => 'bubblesheet.png',
 9840:                     		linktitle => 'Grade bubblesheet exams, upload/download bubblesheet data files, and review previously graded bubblesheet exams.'
 9841:                 	    },
 9842:                             {   linktext => 'Verify Receipt Number',
 9843:                                 url => $url5,
 9844:                                 permission => 'F',
 9845:                                 icon => 'receipt_number.png',
 9846:                                 linktitle => 'Verify a system-generated receipt number for correct problem solution.'
 9847:                             }
 9848: 
 9849:                     ]
 9850:             });
 9851: 
 9852:     # Create the menu
 9853:     my $Str;
 9854:     $Str .= '<form method="post" action="" name="gradingMenu">';
 9855:     $Str .= '<input type="hidden" name="command" value="" />'.
 9856:     	'<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
 9857: 
 9858:     $Str .= &Apache::lonhtmlcommon::generate_menu(@menu);
 9859:     return $Str;    
 9860: }
 9861: 
 9862: 
 9863: sub ungraded {
 9864:     my ($request)=@_;
 9865:     &submit_options($request);
 9866: }
 9867: 
 9868: sub submit_options_sequence {
 9869:     my ($request,$symb) = @_;
 9870:     if (!$symb) {return '';}
 9871:     &commonJSfunctions($request);
 9872:     my $result;
 9873: 
 9874:     $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
 9875:         '<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
 9876:     $result.=&selectfield(0).
 9877:             '<input type="hidden" name="command" value="pickStudentPage" />
 9878:             <div>
 9879:               <input type="submit" value="'.&mt('Next').' &rarr;" />
 9880:             </div>
 9881:         </div>
 9882:   </form>';
 9883:     return $result;
 9884: }
 9885: 
 9886: sub submit_options_table {
 9887:     my ($request,$symb) = @_;
 9888:     if (!$symb) {return '';}
 9889:     &commonJSfunctions($request);
 9890:     my $is_tool = ($symb =~ /ext\.tool$/);
 9891:     my $result;
 9892: 
 9893:     $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
 9894:         '<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
 9895: 
 9896:     $result.=&selectfield(1,$is_tool).
 9897:             '<input type="hidden" name="command" value="viewgrades" />
 9898:             <div>
 9899:               <input type="submit" value="'.&mt('Next').' &rarr;" />
 9900:             </div>
 9901:         </div>
 9902:   </form>';
 9903:     return $result;
 9904: }
 9905: 
 9906: sub submit_options_download {
 9907:     my ($request,$symb) = @_;
 9908:     if (!$symb) {return '';}
 9909: 
 9910:     my $is_tool = ($symb =~ /ext\.tool$/);
 9911:     &commonJSfunctions($request);
 9912: 
 9913:     my $result='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
 9914:         '<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
 9915:     $result.='
 9916: <h2>
 9917:   '.&mt('Select Students for whom to Download Submissions').'
 9918: </h2>'.&selectfield(1,$is_tool).'
 9919:                 <input type="hidden" name="command" value="downloadfileslink" /> 
 9920:               <input type="submit" value="'.&mt('Next').' &rarr;" />
 9921:             </div>
 9922:           </div>
 9923: 
 9924: 
 9925:   </form>';
 9926:     return $result;
 9927: }
 9928: 
 9929: #--- Displays the submissions first page -------
 9930: sub submit_options {
 9931:     my ($request,$symb) = @_;
 9932:     if (!$symb) {return '';}
 9933: 
 9934:     my $is_tool = ($symb =~ /ext\.tool$/);
 9935:     &commonJSfunctions($request);
 9936:     my $result;
 9937: 
 9938:     $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
 9939: 	'<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n";
 9940:     $result.=&selectfield(1,$is_tool).'
 9941:                 <input type="hidden" name="command" value="submission" /> 
 9942: 	      <input type="submit" value="'.&mt('Next').' &rarr;" />
 9943:             </div>
 9944:           </div>
 9945:   </form>';
 9946:     return $result;
 9947: }
 9948: 
 9949: sub selectfield {
 9950:    my ($full,$is_tool)=@_;
 9951:    my %options;
 9952:    if ($is_tool) {
 9953:        %options =
 9954:            (&transtatus_options,
 9955:             'select_form_order' => ['yes','incorrect','all']);
 9956:    } else {
 9957:        %options = 
 9958:            (&substatus_options,
 9959:             'select_form_order' => ['yes','queued','graded','incorrect','all']);
 9960:    }
 9961:    my $result='<div class="LC_columnSection">
 9962:   
 9963:     <fieldset>
 9964:       <legend>
 9965:        '.&mt('Sections').'
 9966:       </legend>
 9967:       '.&Apache::lonstatistics::SectionSelect('section','multiple',5).'
 9968:     </fieldset>
 9969:   
 9970:     <fieldset>
 9971:       <legend>
 9972:         '.&mt('Groups').'
 9973:       </legend>
 9974:       '.&Apache::lonstatistics::GroupSelect('group','multiple',5).'
 9975:     </fieldset>
 9976:   
 9977:     <fieldset>
 9978:       <legend>
 9979:         '.&mt('Access Status').'
 9980:       </legend>
 9981:       '.&Apache::lonhtmlcommon::StatusOptions(undef,undef,5,undef,'mult').'
 9982:     </fieldset>';
 9983:     if ($full) {
 9984:         my $heading = &mt('Submission Status');
 9985:         if ($is_tool) {
 9986:             $heading = &mt('Transaction Status');
 9987:         }
 9988:         $result.='
 9989:     <fieldset>
 9990:       <legend>
 9991:         '.$heading.'
 9992:       </legend>'.
 9993:        &Apache::loncommon::select_form('all','submitonly',\%options).
 9994:    '</fieldset>';
 9995:     }
 9996:     $result.='</div><br />';
 9997:     return $result;
 9998: }
 9999: 
10000: sub substatus_options {
10001:     return &Apache::lonlocal::texthash(
10002:                                       'yes'       => 'with submissions',
10003:                                       'queued'    => 'in grading queue',
10004:                                       'graded'    => 'with ungraded submissions',
10005:                                       'incorrect' => 'with incorrect submissions',
10006:                                       'all'       => 'with any status',
10007:                                       );
10008: }
10009: 
10010: sub transtatus_options {
10011:     return &Apache::lonlocal::texthash(
10012:                                        'yes'       => 'with score transactions',
10013:                                        'incorrect' => 'with less than full credit',
10014:                                        'all'       => 'with any status',
10015:                                       );
10016: }
10017: 
10018: sub reset_perm {
10019:     undef(%perm);
10020: }
10021: 
10022: sub init_perm {
10023:     &reset_perm();
10024:     foreach my $test_perm ('vgr','mgr','opa') {
10025: 
10026: 	my $scope = $env{'request.course.id'};
10027: 	if (!($perm{$test_perm}=&Apache::lonnet::allowed($test_perm,$scope))) {
10028: 
10029: 	    $scope .= '/'.$env{'request.course.sec'};
10030: 	    if ( $perm{$test_perm}=
10031: 		 &Apache::lonnet::allowed($test_perm,$scope)) {
10032: 		$perm{$test_perm.'_section'}=$env{'request.course.sec'};
10033: 	    } else {
10034: 		delete($perm{$test_perm});
10035: 	    }
10036: 	}
10037:     }
10038: }
10039: 
10040: sub init_old_essays {
10041:     my ($symb,$apath,$adom,$aname) = @_;
10042:     if ($symb ne '') {
10043:         my %essays = &Apache::lonnet::dump('nohist_essay_'.$apath,$adom,$aname);
10044:         if (keys(%essays) > 0) {
10045:             $old_essays{$symb} = \%essays;
10046:         }
10047:     }
10048:     return;
10049: }
10050: 
10051: sub reset_old_essays {
10052:     undef(%old_essays);
10053: }
10054: 
10055: sub gather_clicker_ids {
10056:     my %clicker_ids;
10057: 
10058:     my $classlist = &Apache::loncoursedata::get_classlist();
10059: 
10060:     # Set up a couple variables.
10061:     my $username_idx = &Apache::loncoursedata::CL_SNAME();
10062:     my $domain_idx   = &Apache::loncoursedata::CL_SDOM();
10063:     my $status_idx   = &Apache::loncoursedata::CL_STATUS();
10064: 
10065:     foreach my $student (keys(%$classlist)) {
10066:         if ($classlist->{$student}->[$status_idx] ne 'Active') { next; }
10067:         my $username = $classlist->{$student}->[$username_idx];
10068:         my $domain   = $classlist->{$student}->[$domain_idx];
10069:         my $clickers =
10070: 	    (&Apache::lonnet::userenvironment($domain,$username,'clickers'))[1];
10071:         foreach my $id (split(/\,/,$clickers)) {
10072:             $id=~s/^[\#0]+//;
10073:             $id=~s/[\-\:]//g;
10074:             if (exists($clicker_ids{$id})) {
10075: 		$clicker_ids{$id}.=','.$username.':'.$domain;
10076:             } else {
10077: 		$clicker_ids{$id}=$username.':'.$domain;
10078:             }
10079:         }
10080:     }
10081:     return %clicker_ids;
10082: }
10083: 
10084: sub gather_adv_clicker_ids {
10085:     my %clicker_ids;
10086:     my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
10087:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
10088:     my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
10089:     foreach my $element (sort(keys(%coursepersonnel))) {
10090:         foreach my $person (split(/\,/,$coursepersonnel{$element})) {
10091:             my ($puname,$pudom)=split(/\:/,$person);
10092:             my $clickers =
10093: 		(&Apache::lonnet::userenvironment($pudom,$puname,'clickers'))[1];
10094:             foreach my $id (split(/\,/,$clickers)) {
10095: 		$id=~s/^[\#0]+//;
10096:                 $id=~s/[\-\:]//g;
10097: 		if (exists($clicker_ids{$id})) {
10098: 		    $clicker_ids{$id}.=','.$puname.':'.$pudom;
10099: 		} else {
10100: 		    $clicker_ids{$id}=$puname.':'.$pudom;
10101: 		}
10102:             }
10103:         }
10104:     }
10105:     return %clicker_ids;
10106: }
10107: 
10108: sub clicker_grading_parameters {
10109:     return ('gradingmechanism' => 'scalar',
10110:             'upfiletype' => 'scalar',
10111:             'specificid' => 'scalar',
10112:             'pcorrect' => 'scalar',
10113:             'pincorrect' => 'scalar');
10114: }
10115: 
10116: sub process_clicker {
10117:     my ($r,$symb)=@_;
10118:     if (!$symb) {return '';}
10119:     my $result=&checkforfile_js();
10120:     $result.=&Apache::loncommon::start_data_table().
10121:              &Apache::loncommon::start_data_table_header_row().
10122:              '<th>'.&mt('Specify a file containing clicker information and set grading options.').'</th>'.
10123:              &Apache::loncommon::end_data_table_header_row().
10124:              &Apache::loncommon::start_data_table_row()."<td>\n";
10125: # Attempt to restore parameters from last session, set defaults if not present
10126:     my %Saveable_Parameters=&clicker_grading_parameters();
10127:     &Apache::loncommon::restore_course_settings('grades_clicker',
10128:                                                  \%Saveable_Parameters);
10129:     if (!$env{'form.pcorrect'}) { $env{'form.pcorrect'}=100; }
10130:     if (!$env{'form.pincorrect'}) { $env{'form.pincorrect'}=100; }
10131:     if (!$env{'form.gradingmechanism'}) { $env{'form.gradingmechanism'}='attendance'; }
10132:     if (!$env{'form.upfiletype'}) { $env{'form.upfiletype'}='iclicker'; }
10133: 
10134:     my %checked;
10135:     foreach my $gradingmechanism ('attendance','personnel','specific','given') {
10136:        if ($env{'form.gradingmechanism'} eq $gradingmechanism) {
10137:           $checked{$gradingmechanism}=' checked="checked"';
10138:        }
10139:     }
10140: 
10141:     my $upload=&mt("Evaluate File");
10142:     my $type=&mt("Type");
10143:     my $attendance=&mt("Award points just for participation");
10144:     my $personnel=&mt("Correctness determined from response by course personnel");
10145:     my $specific=&mt("Correctness determined from response with clicker ID(s)"); 
10146:     my $given=&mt("Correctness determined from given list of answers").' '.
10147:               '<font size="-2"><tt>('.&mt("Provide comma-separated list. Use '*' for any answer correct, '-' for skip").')</tt></font>';
10148:     my $pcorrect=&mt("Percentage points for correct solution");
10149:     my $pincorrect=&mt("Percentage points for incorrect solution");
10150:     my $selectform=&Apache::loncommon::select_form($env{'form.upfiletype'},'upfiletype',
10151: 						   {'iclicker' => 'i>clicker',
10152:                                                     'interwrite' => 'interwrite PRS',
10153:                                                     'turning' => 'Turning Technologies'});
10154:     $symb = &Apache::lonenc::check_encrypt($symb);
10155:     $result.= &Apache::lonhtmlcommon::scripttag(<<ENDUPFORM);
10156: function sanitycheck() {
10157: // Accept only integer percentages
10158:    document.forms.gradesupload.pcorrect.value=Math.round(document.forms.gradesupload.pcorrect.value);
10159:    document.forms.gradesupload.pincorrect.value=Math.round(document.forms.gradesupload.pincorrect.value);
10160: // Find out grading choice
10161:    for (i=0; i<document.forms.gradesupload.gradingmechanism.length; i++) {
10162:       if (document.forms.gradesupload.gradingmechanism[i].checked) {
10163:          gradingchoice=document.forms.gradesupload.gradingmechanism[i].value;
10164:       }
10165:    }
10166: // By default, new choice equals user selection
10167:    newgradingchoice=gradingchoice;
10168: // Not good to give more points for false answers than correct ones
10169:    if (Math.round(document.forms.gradesupload.pcorrect.value)<Math.round(document.forms.gradesupload.pincorrect.value)) {
10170:       document.forms.gradesupload.pcorrect.value=document.forms.gradesupload.pincorrect.value;
10171:    }
10172: // If new choice is attendance only, and old choice was correctness-based, restore defaults
10173:    if ((gradingchoice=='attendance') && (document.forms.gradesupload.waschecked.value!='attendance')) {
10174:       document.forms.gradesupload.pcorrect.value=100;
10175:       document.forms.gradesupload.pincorrect.value=100;
10176:    }
10177: // If the values are different, cannot be attendance only
10178:    if ((Math.round(document.forms.gradesupload.pcorrect.value)!=Math.round(document.forms.gradesupload.pincorrect.value)) &&
10179:        (gradingchoice=='attendance')) {
10180:        newgradingchoice='personnel';
10181:    }
10182: // Change grading choice to new one
10183:    for (i=0; i<document.forms.gradesupload.gradingmechanism.length; i++) {
10184:       if (document.forms.gradesupload.gradingmechanism[i].value==newgradingchoice) {
10185:          document.forms.gradesupload.gradingmechanism[i].checked=true;
10186:       } else {
10187:          document.forms.gradesupload.gradingmechanism[i].checked=false;
10188:       }
10189:    }
10190: // Remember the old state
10191:    document.forms.gradesupload.waschecked.value=newgradingchoice;
10192: }
10193: ENDUPFORM
10194:     $result.= <<ENDUPFORM;
10195: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
10196: <input type="hidden" name="symb" value="$symb" />
10197: <input type="hidden" name="command" value="processclickerfile" />
10198: <input type="file" name="upfile" size="50" />
10199: <br /><label>$type: $selectform</label>
10200: ENDUPFORM
10201:     $result.='</td>'.&Apache::loncommon::end_data_table_row().
10202:                      &Apache::loncommon::start_data_table_row().'<td>'.(<<ENDGRADINGFORM);
10203:       <label><input type="radio" name="gradingmechanism" value="attendance"$checked{'attendance'} onclick="sanitycheck()" />$attendance </label>
10204: <br /><label><input type="radio" name="gradingmechanism" value="personnel"$checked{'personnel'} onclick="sanitycheck()" />$personnel</label>
10205: <br /><label><input type="radio" name="gradingmechanism" value="specific"$checked{'specific'} onclick="sanitycheck()" />$specific </label>
10206: <input type="text" name="specificid" value="$env{'form.specificid'}" size="20" />
10207: <br /><label><input type="radio" name="gradingmechanism" value="given"$checked{'given'} onclick="sanitycheck()" />$given </label>
10208: <br />&nbsp;&nbsp;&nbsp;
10209: <input type="text" name="givenanswer" size="50" />
10210: <input type="hidden" name="waschecked" value="$env{'form.gradingmechanism'}" />
10211: ENDGRADINGFORM
10212:     $result.='</td>'.&Apache::loncommon::end_data_table_row().
10213:                      &Apache::loncommon::start_data_table_row().'<td>'.(<<ENDPERCFORM);
10214:       <label>$pcorrect: <input type="text" name="pcorrect" size="4" value="$env{'form.pcorrect'}" onchange="sanitycheck()" /></label>
10215: <br /><label>$pincorrect: <input type="text" name="pincorrect" size="4" value="$env{'form.pincorrect'}" onchange="sanitycheck()" /></label>
10216: <br /><input type="button" onclick="javascript:checkUpload(this.form);" value="$upload" />
10217: </form>
10218: ENDPERCFORM
10219:     $result.='</td>'.
10220:              &Apache::loncommon::end_data_table_row().
10221:              &Apache::loncommon::end_data_table();
10222:     return $result;
10223: }
10224: 
10225: sub process_clicker_file {
10226:     my ($r,$symb) = @_;
10227:     if (!$symb) {return '';}
10228: 
10229:     my %Saveable_Parameters=&clicker_grading_parameters();
10230:     &Apache::loncommon::store_course_settings('grades_clicker',
10231:                                               \%Saveable_Parameters);
10232:     my $result='';
10233:     if (($env{'form.gradingmechanism'} eq 'specific') && ($env{'form.specificid'}!~/\w/)) {
10234: 	$result.='<span class="LC_error">'.&mt('You need to specify a clicker ID for the correct answer').'</span>';
10235: 	return $result;
10236:     }
10237:     if (($env{'form.gradingmechanism'} eq 'given') && ($env{'form.givenanswer'}!~/\S/)) {
10238:         $result.='<span class="LC_error">'.&mt('You need to specify the correct answer').'</span>';
10239:         return $result;
10240:     }
10241:     my $foundgiven=0;
10242:     if ($env{'form.gradingmechanism'} eq 'given') {
10243:         $env{'form.givenanswer'}=~s/^\s*//gs;
10244:         $env{'form.givenanswer'}=~s/\s*$//gs;
10245:         $env{'form.givenanswer'}=~s/[^a-zA-Z0-9\.\*\-\+]+/\,/g;
10246:         $env{'form.givenanswer'}=uc($env{'form.givenanswer'});
10247:         my @answers=split(/\,/,$env{'form.givenanswer'});
10248:         $foundgiven=$#answers+1;
10249:     }
10250:     my %clicker_ids=&gather_clicker_ids();
10251:     my %correct_ids;
10252:     if ($env{'form.gradingmechanism'} eq 'personnel') {
10253: 	%correct_ids=&gather_adv_clicker_ids();
10254:     }
10255:     if ($env{'form.gradingmechanism'} eq 'specific') {
10256: 	foreach my $correct_id (split(/[\s\,]/,$env{'form.specificid'})) {;
10257: 	   $correct_id=~tr/a-z/A-Z/;
10258: 	   $correct_id=~s/\s//gs;
10259: 	   $correct_id=~s/^[\#0]+//;
10260:            $correct_id=~s/[\-\:]//g;
10261:            if ($correct_id) {
10262: 	      $correct_ids{$correct_id}='specified';
10263:            }
10264:         }
10265:     }
10266:     if ($env{'form.gradingmechanism'} eq 'attendance') {
10267: 	$result.=&mt('Score based on attendance only');
10268:     } elsif ($env{'form.gradingmechanism'} eq 'given') {
10269:         $result.=&mt('Score based on [_1] ([_2] answers)','<tt>'.$env{'form.givenanswer'}.'</tt>',$foundgiven);
10270:     } else {
10271: 	my $number=0;
10272: 	$result.='<p><b>'.&mt('Correctness determined by the following IDs').'</b>';
10273: 	foreach my $id (sort(keys(%correct_ids))) {
10274: 	    $result.='<br /><tt>'.$id.'</tt> - ';
10275: 	    if ($correct_ids{$id} eq 'specified') {
10276: 		$result.=&mt('specified');
10277: 	    } else {
10278: 		my ($uname,$udom)=split(/\:/,$correct_ids{$id});
10279: 		$result.=&Apache::loncommon::plainname($uname,$udom);
10280: 	    }
10281: 	    $number++;
10282: 	}
10283:         $result.="</p>\n";
10284:         if ($number==0) {
10285:             $result .=
10286:                  &Apache::lonhtmlcommon::confirm_success(
10287:                      &mt('No IDs found to determine correct answer'),1);
10288:             return $result;
10289:         }
10290:     }
10291:     if (length($env{'form.upfile'}) < 2) {
10292:         $result .=
10293:             &Apache::lonhtmlcommon::confirm_success(
10294:                 &mt('The file: [_1] you attempted to upload contained no information. Please check that you entered the correct filename.',
10295:                         '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>'),1);
10296:         return $result;
10297:     }
10298:     my $mimetype;
10299:     if ($env{'form.upfiletype'} eq 'iclicker') {
10300:         my $mm = new File::MMagic;
10301:         $mimetype = $mm->checktype_contents($env{'form.upfile'});
10302:         unless (($mimetype eq 'text/plain') || ($mimetype eq 'text/html')) {
10303:             $result.= '<p>'.
10304:                 &Apache::lonhtmlcommon::confirm_success(
10305:                     &mt('File format is neither csv (iclicker 6) nor xml (iclicker 7)'),1).'</p>';
10306:             return $result;
10307:         }
10308:     } elsif (($env{'form.upfiletype'} ne 'interwrite') && ($env{'form.upfiletype'} ne 'turning')) {
10309:         $result .= '<p>'.
10310:             &Apache::lonhtmlcommon::confirm_success(
10311:                 &mt('Invalid clicker type: choose one of: i>clicker, Interwrite PRS, or Turning Technologies.'),1).'</p>';
10312:         return $result;
10313:     }
10314: 
10315: # Were able to get all the info needed, now analyze the file
10316: 
10317:     $result.=&Apache::loncommon::studentbrowser_javascript();
10318:     $symb = &Apache::lonenc::check_encrypt($symb);
10319:     $result.=&Apache::loncommon::start_data_table().
10320:              &Apache::loncommon::start_data_table_header_row().
10321:              '<th>'.&mt('Evaluate clicker file').'</th>'.
10322:              &Apache::loncommon::end_data_table_header_row().
10323:              &Apache::loncommon::start_data_table_row().(<<ENDHEADER);
10324: <td>
10325: <form method="post" action="/adm/grades" name="clickeranalysis">
10326: <input type="hidden" name="symb" value="$symb" />
10327: <input type="hidden" name="command" value="assignclickergrades" />
10328: <input type="hidden" name="gradingmechanism" value="$env{'form.gradingmechanism'}" />
10329: <input type="hidden" name="pcorrect" value="$env{'form.pcorrect'}" />
10330: <input type="hidden" name="pincorrect" value="$env{'form.pincorrect'}" />
10331: ENDHEADER
10332:     if ($env{'form.gradingmechanism'} eq 'given') {
10333:        $result.='<input type="hidden" name="correct:given" value="'.$env{'form.givenanswer'}.'" />';
10334:     } 
10335:     my %responses;
10336:     my @questiontitles;
10337:     my $errormsg='';
10338:     my $number=0;
10339:     if ($env{'form.upfiletype'} eq 'iclicker') {
10340:         if ($mimetype eq 'text/plain') {
10341:             ($errormsg,$number)=&iclicker_eval(\@questiontitles,\%responses);
10342:         } elsif ($mimetype eq 'text/html') {
10343:             ($errormsg,$number)=&iclickerxml_eval(\@questiontitles,\%responses);
10344:         }
10345:     } elsif ($env{'form.upfiletype'} eq 'interwrite') {
10346:         ($errormsg,$number)=&interwrite_eval(\@questiontitles,\%responses);
10347:     } elsif ($env{'form.upfiletype'} eq 'turning') {
10348:         ($errormsg,$number)=&turning_eval(\@questiontitles,\%responses);
10349:     }
10350:     $result.='<br />'.&mt('Found [_1] question(s)',$number).'<br />'.
10351:              '<input type="hidden" name="number" value="'.$number.'" />'.
10352:              &mt('Awarding [_1] percent for correct and [_2] percent for incorrect responses',
10353:                  $env{'form.pcorrect'},$env{'form.pincorrect'}).
10354:              '<br />';
10355:     if (($env{'form.gradingmechanism'} eq 'given') && ($number!=$foundgiven)) {
10356:        $result.='<span class="LC_error">'.&mt('Number of given answers does not agree with number of questions in file.').'</span>';
10357:        return $result;
10358:     } 
10359: # Remember Question Titles
10360: # FIXME: Possibly need delimiter other than ":"
10361:     for (my $i=0;$i<$number;$i++) {
10362:         $result.='<input type="hidden" name="question:'.$i.'" value="'.
10363:                  &HTML::Entities::encode($questiontitles[$i],'"&<>').'" />';
10364:     }
10365:     my $correct_count=0;
10366:     my $student_count=0;
10367:     my $unknown_count=0;
10368: # Match answers with usernames
10369: # FIXME: Possibly need delimiter other than ":"
10370:     foreach my $id (keys(%responses)) {
10371:        if ($correct_ids{$id}) {
10372:           $result.="\n".'<input type="hidden" name="correct:'.$correct_count.':'.$correct_ids{$id}.'" value="'.$responses{$id}.'" />';
10373:           $correct_count++;
10374:        } elsif ($clicker_ids{$id}) {
10375:           if ($clicker_ids{$id}=~/\,/) {
10376: # More than one user with the same clicker!
10377:              $result.="</td>".&Apache::loncommon::end_data_table_row().
10378:                            &Apache::loncommon::start_data_table_row()."<td>".
10379:                        &mt('Clicker registered more than once').": <tt>".$id."</tt><br />";
10380:              $result.="\n".'<input type="hidden" name="unknown:'.$id.'" value="'.$responses{$id}.'" />'.
10381:                            "<select name='multi".$id."'>";
10382:              foreach my $reguser (sort(split(/\,/,$clicker_ids{$id}))) {
10383:                  $result.="<option value='".$reguser."'>".&Apache::loncommon::plainname(split(/\:/,$reguser)).' ('.$reguser.')</option>';
10384:              }
10385:              $result.='</select>';
10386:              $unknown_count++;
10387:           } else {
10388: # Good: found one and only one user with the right clicker
10389:              $result.="\n".'<input type="hidden" name="student:'.$clicker_ids{$id}.'" value="'.$responses{$id}.'" />';
10390:              $student_count++;
10391:           }
10392:        } else {
10393:           $result.="</td>".&Apache::loncommon::end_data_table_row().
10394:                            &Apache::loncommon::start_data_table_row()."<td>".
10395:                     &mt('Unregistered Clicker')." <tt>".$id."</tt><br />";
10396:           $result.="\n".'<input type="hidden" name="unknown:'.$id.'" value="'.$responses{$id}.'" />'.
10397:                    "\n".&mt("Username").": <input type='text' name='uname".$id."' />&nbsp;".
10398:                    "\n".&mt("Domain").": ".
10399:                    &Apache::loncommon::select_dom_form($env{'course.'.$env{'request.course.id'}.'.domain'},'udom'.$id).'&nbsp;'.
10400:                    &Apache::loncommon::selectstudent_link('clickeranalysis','uname'.$id,'udom'.$id,'',$id);
10401:           $unknown_count++;
10402:        }
10403:     }
10404:     $result.='<hr />'.
10405:              &mt('Found [_1] registered and [_2] unregistered clickers.',$student_count,$unknown_count);
10406:     if (($env{'form.gradingmechanism'} ne 'attendance') && ($env{'form.gradingmechanism'} ne 'given')) {
10407:        if ($correct_count==0) {
10408:           $errormsg.="Found no correct answers for grading!";
10409:        } elsif ($correct_count>1) {
10410:           $result.='<br /><span class="LC_warning">'.&mt("Found [_1] entries for grading!",$correct_count).'</span>';
10411:        }
10412:     }
10413:     if ($number<1) {
10414:        $errormsg.="Found no questions.";
10415:     }
10416:     if ($errormsg) {
10417:        $result.='<br /><span class="LC_error">'.&mt($errormsg).'</span>';
10418:     } else {
10419:        $result.='<br /><input type="submit" name="finalize" value="'.&mt('Finalize Grading').'" />';
10420:     }
10421:     $result.='</form></td>'.
10422:              &Apache::loncommon::end_data_table_row().
10423:              &Apache::loncommon::end_data_table();
10424:     return $result;
10425: }
10426: 
10427: sub iclicker_eval {
10428:     my ($questiontitles,$responses)=@_;
10429:     my $number=0;
10430:     my $errormsg='';
10431:     foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
10432:         my %components=&Apache::loncommon::record_sep($line);
10433:         my @entries=map {$components{$_}} (sort(keys(%components)));
10434: 	if ($entries[0] eq 'Question') {
10435: 	    for (my $i=3;$i<$#entries;$i+=6) {
10436: 		$$questiontitles[$number]=$entries[$i];
10437: 		$number++;
10438: 	    }
10439: 	}
10440: 	if ($entries[0]=~/^\#/) {
10441: 	    my $id=$entries[0];
10442: 	    my @idresponses;
10443: 	    $id=~s/^[\#0]+//;
10444: 	    for (my $i=0;$i<$number;$i++) {
10445: 		my $idx=3+$i*6;
10446:                 $entries[$idx]=~s/[^a-zA-Z0-9\.\*\-\+]+//g;
10447: 		push(@idresponses,$entries[$idx]);
10448: 	    }
10449: 	    $$responses{$id}=join(',',@idresponses);
10450: 	}
10451:     }
10452:     return ($errormsg,$number);
10453: }
10454: 
10455: sub iclickerxml_eval {
10456:     my ($questiontitles,$responses)=@_;
10457:     my $number=0;
10458:     my $errormsg='';
10459:     my @state;
10460:     my %respbyid;
10461:     my $p = HTML::Parser->new
10462:     (
10463:         xml_mode => 1,
10464:         start_h =>
10465:             [sub {
10466:                  my ($tagname,$attr) = @_;
10467:                  push(@state,$tagname);
10468:                  if ("@state" eq "ssn p") {
10469:                      my $title = $attr->{qn};
10470:                      $title =~ s/(^\s+|\s+$)//g;
10471:                      $questiontitles->[$number]=$title;
10472:                  } elsif ("@state" eq "ssn p v") {
10473:                      my $id = $attr->{id};
10474:                      my $entry = $attr->{ans};
10475:                      $id=~s/^[\#0]+//;
10476:                      $entry =~s/[^a-zA-Z0-9\.\*\-\+]+//g;
10477:                      $respbyid{$id}[$number] = $entry;
10478:                  }
10479:             }, "tagname, attr"],
10480:          end_h =>
10481:                [sub {
10482:                    my ($tagname) = @_;
10483:                    if ("@state" eq "ssn p") {
10484:                        $number++;
10485:                    }
10486:                    pop(@state);
10487:                 }, "tagname"],
10488:     );
10489: 
10490:     $p->parse($env{'form.upfile'});
10491:     $p->eof;
10492:     foreach my $id (keys(%respbyid)) {
10493:         $responses->{$id}=join(',',@{$respbyid{$id}});
10494:     }
10495:     return ($errormsg,$number);
10496: }
10497: 
10498: sub interwrite_eval {
10499:     my ($questiontitles,$responses)=@_;
10500:     my $number=0;
10501:     my $errormsg='';
10502:     my $skipline=1;
10503:     my $questionnumber=0;
10504:     my %idresponses=();
10505:     foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
10506:         my %components=&Apache::loncommon::record_sep($line);
10507:         my @entries=map {$components{$_}} (sort(keys(%components)));
10508:         if ($entries[1] eq 'Time') { $skipline=0; next; }
10509:         if ($entries[1] eq 'Response') { $skipline=1; }
10510:         next if $skipline;
10511:         if ($entries[0]!=$questionnumber) {
10512:            $questionnumber=$entries[0];
10513:            $$questiontitles[$number]=&mt('Question [_1]',$questionnumber);
10514:            $number++;
10515:         }
10516:         my $id=$entries[4];
10517:         $id=~s/^[\#0]+//;
10518:         $id=~s/^v\d*\://i;
10519:         $id=~s/[\-\:]//g;
10520:         $idresponses{$id}[$number]=$entries[6];
10521:     }
10522:     foreach my $id (keys(%idresponses)) {
10523:        $$responses{$id}=join(',',@{$idresponses{$id}});
10524:        $$responses{$id}=~s/^\s*\,//;
10525:     }
10526:     return ($errormsg,$number);
10527: }
10528: 
10529: sub turning_eval {
10530:     my ($questiontitles,$responses)=@_;
10531:     my $number=0;
10532:     my $errormsg='';
10533:     foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
10534:         my %components=&Apache::loncommon::record_sep($line);
10535:         my @entries=map {$components{$_}} (sort(keys(%components)));
10536:         if ($#entries>$number) { $number=$#entries; }
10537:         my $id=$entries[0];
10538:         my @idresponses;
10539:         $id=~s/^[\#0]+//;
10540:         unless ($id) { next; }
10541:         for (my $idx=1;$idx<=$#entries;$idx++) {
10542:             $entries[$idx]=~s/\,/\;/g;
10543:             $entries[$idx]=~s/[^a-zA-Z0-9\.\*\-\+\;]+//g;
10544:             push(@idresponses,$entries[$idx]);
10545:         }
10546:         $$responses{$id}=join(',',@idresponses);
10547:     }
10548:     for (my $i=1; $i<=$number; $i++) {
10549:         $$questiontitles[$i]=&mt('Question [_1]',$i);
10550:     }
10551:     return ($errormsg,$number);
10552: }
10553: 
10554: 
10555: sub assign_clicker_grades {
10556:     my ($r,$symb) = @_;
10557:     if (!$symb) {return '';}
10558: # See which part we are saving to
10559:     my $res_error;
10560:     my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
10561:     if ($res_error) {
10562:         return &navmap_errormsg();
10563:     }
10564: # FIXME: This should probably look for the first handgradeable part
10565:     my $part=$$partlist[0];
10566: # Start screen output
10567:     my $result = &Apache::loncommon::start_data_table().
10568:                  &Apache::loncommon::start_data_table_header_row().
10569:                  '<th>'.&mt('Assigning grades based on clicker file').'</th>'.
10570:                  &Apache::loncommon::end_data_table_header_row().
10571:                  &Apache::loncommon::start_data_table_row().'<td>';
10572: # Get correct result
10573: # FIXME: Possibly need delimiter other than ":"
10574:     my @correct=();
10575:     my $gradingmechanism=$env{'form.gradingmechanism'};
10576:     my $number=$env{'form.number'};
10577:     if ($gradingmechanism ne 'attendance') {
10578:        foreach my $key (keys(%env)) {
10579:           if ($key=~/^form\.correct\:/) {
10580:              my @input=split(/\,/,$env{$key});
10581:              for (my $i=0;$i<=$#input;$i++) {
10582:                  if (($correct[$i]) && ($input[$i]) &&
10583:                      ($correct[$i] ne $input[$i])) {
10584:                     $result.='<br /><span class="LC_warning">'.
10585:                              &mt('More than one correct result given for question "[_1]": [_2] versus [_3].',
10586:                                  $env{'form.question:'.$i},$correct[$i],$input[$i]).'</span>';
10587:                  } elsif (($input[$i]) || ($input[$i] eq '0')) {
10588:                     $correct[$i]=$input[$i];
10589:                  }
10590:              }
10591:           }
10592:        }
10593:        for (my $i=0;$i<$number;$i++) {
10594:           if ((!$correct[$i]) && ($correct[$i] ne '0')) {
10595:              $result.='<br /><span class="LC_error">'.
10596:                       &mt('No correct result given for question "[_1]"!',
10597:                           $env{'form.question:'.$i}).'</span>';
10598:           }
10599:        }
10600:        $result.='<br />'.&mt("Correct answer: [_1]",join(', ',map { ((($_) || ($_ eq '0'))?$_:'-') } @correct));
10601:     }
10602: # Start grading
10603:     my $pcorrect=$env{'form.pcorrect'};
10604:     my $pincorrect=$env{'form.pincorrect'};
10605:     my $storecount=0;
10606:     my %users=();
10607:     foreach my $key (keys(%env)) {
10608:        my $user='';
10609:        if ($key=~/^form\.student\:(.*)$/) {
10610:           $user=$1;
10611:        }
10612:        if ($key=~/^form\.unknown\:(.*)$/) {
10613:           my $id=$1;
10614:           if (($env{'form.uname'.$id}) && ($env{'form.udom'.$id})) {
10615:              $user=$env{'form.uname'.$id}.':'.$env{'form.udom'.$id};
10616:           } elsif ($env{'form.multi'.$id}) {
10617:              $user=$env{'form.multi'.$id};
10618:           }
10619:        }
10620:        if ($user) {
10621:           if ($users{$user}) {
10622:              $result.='<br /><span class="LC_warning">'.
10623:                       &mt('More than one entry found for [_1]!','<tt>'.$user.'</tt>').
10624:                       '</span><br />';
10625:           }
10626:           $users{$user}=1; 
10627:           my @answer=split(/\,/,$env{$key});
10628:           my $sum=0;
10629:           my $realnumber=$number;
10630:           for (my $i=0;$i<$number;$i++) {
10631:              if  ($correct[$i] eq '-') {
10632:                 $realnumber--;
10633:              } elsif (($answer[$i]) || ($answer[$i]=~/^[0\.]+$/)) {
10634:                 if ($gradingmechanism eq 'attendance') {
10635:                    $sum+=$pcorrect;
10636:                 } elsif ($correct[$i] eq '*') {
10637:                    $sum+=$pcorrect;
10638:                 } else {
10639: # We actually grade if correct or not
10640:                    my $increment=$pincorrect;
10641: # Special case: numerical answer "0"
10642:                    if ($correct[$i] eq '0') {
10643:                       if ($answer[$i]=~/^[0\.]+$/) {
10644:                          $increment=$pcorrect;
10645:                       }
10646: # General numerical answer, both evaluate to something non-zero
10647:                    } elsif ((1.0*$correct[$i]!=0) && (1.0*$answer[$i]!=0)) {
10648:                       if (1.0*$correct[$i]==1.0*$answer[$i]) {
10649:                          $increment=$pcorrect;
10650:                       }
10651: # Must be just alphanumeric
10652:                    } elsif ($answer[$i] eq $correct[$i]) {
10653:                       $increment=$pcorrect;
10654:                    }
10655:                    $sum+=$increment;
10656:                 }
10657:              }
10658:           }
10659:           my $ave=$sum/(100*$realnumber);
10660: # Store
10661:           my ($username,$domain)=split(/\:/,$user);
10662:           my %grades=();
10663:           $grades{"resource.$part.solved"}='correct_by_override';
10664:           $grades{"resource.$part.awarded"}=$ave;
10665:           $grades{"resource.regrader"}="$env{'user.name'}:$env{'user.domain'}";
10666:           my $returncode=&Apache::lonnet::cstore(\%grades,$symb,
10667:                                                  $env{'request.course.id'},
10668:                                                  $domain,$username);
10669:           if ($returncode ne 'ok') {
10670:              $result.="<br /><span class=\"LC_error\">Failed to save student $username:$domain. Message when trying to save was ($returncode)</span>";
10671:           } else {
10672:              $storecount++;
10673:           }
10674:        }
10675:     }
10676: # We are done
10677:     $result.='<br />'.&mt('Successfully stored grades for [quant,_1,student].',$storecount).
10678:              '</td>'.
10679:              &Apache::loncommon::end_data_table_row().
10680:              &Apache::loncommon::end_data_table();
10681:     return $result;
10682: }
10683: 
10684: sub navmap_errormsg {
10685:     return '<div class="LC_error">'.
10686:            &mt('An error occurred retrieving information about resources in the course.').'<br />'.
10687:            &mt('It is recommended that you [_1]re-initialize the course[_2] and then return to this grading page.','<a href="/adm/roles?selectrole=1&newrole='.$env{'request.role'}.'">','</a>').
10688:            '</div>';
10689: }
10690: 
10691: sub startpage {
10692:     my ($r,$symb,$crumbs,$onlyfolderflag,$nodisplayflag,$stuvcurrent,$stuvdisp,$nomenu,$js,$onload) = @_;
10693:     my %args;
10694:     if ($onload) {
10695:          my %loaditems = (
10696:                         'onload' => $onload,
10697:                       );
10698:          $args{'add_entries'} = \%loaditems;
10699:     }
10700:     if ($nomenu) {
10701:         $args{'only_body'} = 1; 
10702:         $r->print(&Apache::loncommon::start_page("Student's Version",$js,\%args));
10703:     } else {
10704:         unshift(@$crumbs,{href=>&href_symb_cmd($symb,'gradingmenu'),text=>"Grading"});
10705:         $args{'bread_crumbs'} = $crumbs;
10706:         $r->print(&Apache::loncommon::start_page('Grading',$js,\%args));
10707:         if ($env{'request.course.id'}) {
10708:             &Apache::lonquickgrades::startGradeScreen($r,($env{'form.symb'}?'probgrading':'grading'));
10709:         }
10710:     }
10711:     unless ($nodisplayflag) {
10712:         $r->print(&Apache::lonhtmlcommon::resource_info_box($symb,$onlyfolderflag,$stuvcurrent,$stuvdisp));
10713:     }
10714: }
10715: 
10716: sub select_problem {
10717:     my ($r)=@_;
10718:     $r->print('<h3>'.&mt('Select the problem or one of the problems you want to grade').'</h3><form action="/adm/grades">');
10719:     $r->print(&Apache::lonstathelpers::problem_selector('.',undef,1,undef,undef,undef,undef,1));
10720:     $r->print('<input type="hidden" name="command" value="gradingmenu" />');
10721:     $r->print('<input type="submit" value="'.&mt('Next').' &rarr;" /></form>');
10722: }
10723: 
10724: sub handler {
10725:     my $request=$_[0];
10726:     &reset_caches();
10727:     if ($request->header_only) {
10728:         &Apache::loncommon::content_type($request,'text/html');
10729:         $request->send_http_header;
10730:         return OK;
10731:     }
10732:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
10733: 
10734: # see what command we need to execute
10735: 
10736:     my @commands=&Apache::loncommon::get_env_multiple('form.command');
10737:     my $command=$commands[0];
10738: 
10739:     &init_perm();
10740:     if (!$env{'request.course.id'}) {
10741:         unless ((&Apache::lonnet::allowed('usc',$env{'request.role.domain'})) &&
10742:                 ($command =~ /^scantronupload/)) {
10743:             # Not in a course.
10744:             $env{'user.error.msg'}="/adm/grades::vgr:0:0:Cannot display grades page outside course context";
10745:             return HTTP_NOT_ACCEPTABLE;
10746:         }
10747:     } elsif (!%perm) {
10748:         $request->internal_redirect('/adm/quickgrades');
10749:         return OK;
10750:     }
10751:     &Apache::loncommon::content_type($request,'text/html');
10752:     $request->send_http_header;
10753: 
10754:     if ($#commands > 0) {
10755: 	&Apache::lonnet::logthis("grades got multiple commands ".join(':',@commands));
10756:     }
10757: 
10758: # see what the symb is
10759: 
10760:     my $symb=$env{'form.symb'};
10761:     unless ($symb) {
10762:        (my $url=$env{'form.url'}) =~ s-^https*://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
10763:        $symb=&Apache::lonnet::symbread($url);
10764:     }
10765:     &Apache::lonenc::check_decrypt(\$symb);
10766: 
10767:     $ssi_error = 0;
10768:     if (($symb eq '' || $command eq '') && ($env{'request.course.id'})) {
10769: #
10770: # Not called from a resource, but inside a course
10771: #    
10772:         &startpage($request,undef,[],1,1);
10773:         &select_problem($request);
10774:     } else {
10775: 	if ($command eq 'submission' && $perm{'vgr'}) {
10776:             my ($stuvcurrent,$stuvdisp,$versionform,$js);
10777:             if (($env{'form.student'} ne '') && ($env{'form.userdom'} ne '')) {
10778:                 ($stuvcurrent,$stuvdisp,$versionform,$js) =
10779:                     &choose_task_version_form($symb,$env{'form.student'},
10780:                                               $env{'form.userdom'});
10781:             }
10782:             &startpage($request,$symb,[{href=>"", text=>"Student Submissions"}],undef,undef,$stuvcurrent,$stuvdisp,undef,$js);
10783:             if ($versionform) {
10784:                 $request->print($versionform);
10785:             }
10786:             $request->print('<br clear="all" />');
10787: 	    ($env{'form.student'} eq '' ? &listStudents($request,$symb) : &submission($request,0,0,$symb));
10788:         } elsif ($command eq 'versionsub' && $perm{'vgr'}) {
10789:             my ($stuvcurrent,$stuvdisp,$versionform,$js) =
10790:                 &choose_task_version_form($symb,$env{'form.student'},
10791:                                           $env{'form.userdom'},
10792:                                           $env{'form.inhibitmenu'});
10793:             &startpage($request,$symb,[{href=>"", text=>"Previous Student Version"}],undef,undef,$stuvcurrent,$stuvdisp,$env{'form.inhibitmenu'},$js);
10794:             if ($versionform) {
10795:                 $request->print($versionform);
10796:             }
10797:             $request->print('<br clear="all" />');
10798:             $request->print(&show_previous_task_version($request,$symb));
10799: 	} elsif ($command eq 'pickStudentPage' && $perm{'vgr'}) {
10800:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,'all_for_one'),text=>'Grade page/folder for one student'},
10801:                                        {href=>'',text=>'Select student'}],1,1);
10802: 	    &pickStudentPage($request,$symb);
10803: 	} elsif ($command eq 'displayPage' && $perm{'vgr'}) {
10804:             &startpage($request,$symb,
10805:                                       [{href=>&href_symb_cmd($symb,'all_for_one'),text=>'Grade page/folder for one student'},
10806:                                        {href=>'',text=>'Select student'},
10807:                                        {href=>'',text=>'Grade student'}],1,1);
10808: 	    &displayPage($request,$symb);
10809: 	} elsif ($command eq 'gradeByPage' && $perm{'mgr'}) {
10810:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,'all_for_one'),text=>'Grade page/folder for one student'},
10811:                                        {href=>'',text=>'Select student'},
10812:                                        {href=>'',text=>'Grade student'},
10813:                                        {href=>'',text=>'Store grades'}],1,1);
10814: 	    &updateGradeByPage($request,$symb);
10815: 	} elsif ($command eq 'processGroup' && $perm{'vgr'}) {
10816:             &startpage($request,$symb,[{href=>'',text=>'...'},
10817:                                        {href=>'',text=>'Modify grades'}]);
10818: 	    &processGroup($request,$symb);
10819: 	} elsif ($command eq 'gradingmenu' && $perm{'vgr'}) {
10820:             &startpage($request,$symb);
10821: 	    $request->print(&grading_menu($request,$symb));
10822: 	} elsif ($command eq 'individual' && $perm{'vgr'}) {
10823:             &startpage($request,$symb,[{href=>'',text=>'Select individual students to grade'}]);
10824: 	    $request->print(&submit_options($request,$symb));
10825:         } elsif ($command eq 'ungraded' && $perm{'vgr'}) {
10826:             &startpage($request,$symb,[{href=>'',text=>'Grade ungraded submissions'}]);
10827:             $request->print(&listStudents($request,$symb,'graded'));
10828:         } elsif ($command eq 'table' && $perm{'vgr'}) {
10829:             &startpage($request,$symb,[{href=>"", text=>"Grading table"}]);
10830:             $request->print(&submit_options_table($request,$symb));
10831:         } elsif ($command eq 'all_for_one' && $perm{'vgr'}) {
10832:             &startpage($request,$symb,[{href=>'',text=>'Grade page/folder for one student'}],1,1);
10833:             $request->print(&submit_options_sequence($request,$symb));
10834: 	} elsif ($command eq 'viewgrades' && $perm{'vgr'}) {
10835:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,"table"), text=>"Grading table"},{href=>'', text=>"Modify grades"}]);
10836: 	    $request->print(&viewgrades($request,$symb));
10837: 	} elsif ($command eq 'handgrade' && $perm{'mgr'}) {
10838:             &startpage($request,$symb,[{href=>'',text=>'...'},
10839:                                        {href=>'',text=>'Store grades'}]);
10840: 	    $request->print(&processHandGrade($request,$symb));
10841: 	} elsif ($command eq 'editgrades' && $perm{'mgr'}) {
10842:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,"table"), text=>"Grading table"},
10843:                                        {href=>&href_symb_cmd($symb,'viewgrades').'&group=all&section=all&Status=Active',
10844:                                                                              text=>"Modify grades"},
10845:                                        {href=>'', text=>"Store grades"}]);
10846: 	    $request->print(&editgrades($request,$symb));
10847:         } elsif ($command eq 'initialverifyreceipt' && $perm{'vgr'}) {
10848:             &startpage($request,$symb,[{href=>'',text=>'Verify Receipt Number'}]);
10849:             $request->print(&initialverifyreceipt($request,$symb));
10850: 	} elsif ($command eq 'verify' && $perm{'vgr'}) {
10851:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,"initialverifyreceipt"),text=>'Verify Receipt Number'},
10852:                                        {href=>'',text=>'Verification Result'}]);
10853: 	    $request->print(&verifyreceipt($request,$symb));
10854:         } elsif ($command eq 'processclicker' && $perm{'mgr'}) {
10855:             &startpage($request,$symb,[{href=>'', text=>'Process clicker'}]);
10856:             $request->print(&process_clicker($request,$symb));
10857:         } elsif ($command eq 'processclickerfile' && $perm{'mgr'}) {
10858:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,'processclicker'), text=>'Process clicker'},
10859:                                        {href=>'', text=>'Process clicker file'}]);
10860:             $request->print(&process_clicker_file($request,$symb));
10861:         } elsif ($command eq 'assignclickergrades' && $perm{'mgr'}) {
10862:             &startpage($request,$symb,[{href=>&href_symb_cmd($symb,'processclicker'), text=>'Process clicker'},
10863:                                        {href=>'', text=>'Process clicker file'},
10864:                                        {href=>'', text=>'Store grades'}]);
10865:             $request->print(&assign_clicker_grades($request,$symb));
10866: 	} elsif ($command eq 'csvform' && $perm{'mgr'}) {
10867:             &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
10868: 	    $request->print(&upcsvScores_form($request,$symb));
10869: 	} elsif ($command eq 'csvupload' && $perm{'mgr'}) {
10870:             &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
10871: 	    $request->print(&csvupload($request,$symb));
10872: 	} elsif ($command eq 'csvuploadmap' && $perm{'mgr'} ) {
10873:             &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
10874: 	    $request->print(&csvuploadmap($request,$symb));
10875: 	} elsif ($command eq 'csvuploadoptions' && $perm{'mgr'}) {
10876: 	    if ($env{'form.associate'} ne 'Reverse Association') {
10877:                 &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
10878: 		$request->print(&csvuploadoptions($request,$symb));
10879: 	    } else {
10880: 		if ( $env{'form.upfile_associate'} ne 'reverse' ) {
10881: 		    $env{'form.upfile_associate'} = 'reverse';
10882: 		} else {
10883: 		    $env{'form.upfile_associate'} = 'forward';
10884: 		}
10885:                 &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
10886: 		$request->print(&csvuploadmap($request,$symb));
10887: 	    }
10888: 	} elsif ($command eq 'csvuploadassign' && $perm{'mgr'} ) {
10889:             &startpage($request,$symb,[{href=>'', text=>'Upload Scores'}],1,1);
10890: 	    $request->print(&csvuploadassign($request,$symb));
10891: 	} elsif ($command eq 'scantron_selectphase' && $perm{'mgr'}) {
10892:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1,
10893:                        undef,undef,undef,undef,'toggleScantab(document.rules);');
10894: 	    $request->print(&scantron_selectphase($request,undef,$symb));
10895:  	} elsif ($command eq 'scantron_warning' && $perm{'mgr'}) {
10896:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
10897:  	    $request->print(&scantron_do_warning($request,$symb));
10898: 	} elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
10899:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
10900: 	    $request->print(&scantron_validate_file($request,$symb));
10901: 	} elsif ($command eq 'scantron_process' && $perm{'mgr'}) {
10902:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
10903: 	    $request->print(&scantron_process_students($request,$symb));
10904:  	} elsif ($command eq 'scantronupload' && 
10905:  		 (&Apache::lonnet::allowed('usc',$env{'request.role.domain'})||
10906: 		  &Apache::lonnet::allowed('usc',$env{'request.course.id'}))) {
10907:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1,
10908:                        undef,undef,undef,undef,'toggleScantab(document.rules);');
10909:  	    $request->print(&scantron_upload_scantron_data($request,$symb)); 
10910:  	} elsif ($command eq 'scantronupload_save' &&
10911:  		 (&Apache::lonnet::allowed('usc',$env{'request.role.domain'})||
10912: 		  &Apache::lonnet::allowed('usc',$env{'request.course.id'}))) {
10913:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
10914:  	    $request->print(&scantron_upload_scantron_data_save($request,$symb));
10915:  	} elsif ($command eq 'scantron_download' &&
10916: 		 &Apache::lonnet::allowed('usc',$env{'request.course.id'})) {
10917:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
10918:  	    $request->print(&scantron_download_scantron_data($request,$symb));
10919:         } elsif ($command eq 'checksubmissions' && $perm{'vgr'}) {
10920:             &startpage($request,$symb,[{href=>'', text=>'Grade/Manage/Review Bubblesheets'}],1,1);
10921:             $request->print(&checkscantron_results($request,$symb));
10922:         } elsif ($command eq 'downloadfilesselect' && $perm{'vgr'}) {
10923:             &startpage($request,$symb,[{href=>'', text=>'Select which submissions to download'}]);
10924:             $request->print(&submit_options_download($request,$symb));
10925:          } elsif ($command eq 'downloadfileslink' && $perm{'vgr'}) {
10926:             &startpage($request,$symb,
10927:    [{href=>&href_symb_cmd($symb,'downloadfilesselect'), text=>'Select which submissions to download'},
10928:     {href=>'', text=>'Download submitted files'}]);
10929:             &submit_download_link($request,$symb);
10930: 	} elsif ($command) {
10931:             &startpage($request,$symb,[{href=>'', text=>'Access denied'}]);
10932: 	    $request->print('<p class="LC_error">'.&mt('Access Denied ([_1])',$command).'</p>');
10933: 	}
10934:     }
10935:     if ($ssi_error) {
10936: 	&ssi_print_error($request);
10937:     }
10938:     if ($env{'form.inhibitmenu'}) {
10939:         $request->print(&Apache::loncommon::end_page());
10940:     } elsif ($env{'request.course.id'}) {
10941:         &Apache::lonquickgrades::endGradeScreen($request);
10942:     }
10943:     &reset_caches();
10944:     return OK;
10945: }
10946: 
10947: 1;
10948: 
10949: __END__;
10950: 
10951: 
10952: =head1 NAME
10953: 
10954: Apache::grades
10955: 
10956: =head1 SYNOPSIS
10957: 
10958: Handles the viewing of grades.
10959: 
10960: This is part of the LearningOnline Network with CAPA project
10961: described at http://www.lon-capa.org.
10962: 
10963: =head1 OVERVIEW
10964: 
10965: Do an ssi with retries:
10966: While I'd love to factor out this with the version in lonprintout,
10967: that would either require a data coupling between modules, which I refuse to perpetuate (there's quite enough of that already), or would require the invention of another infrastructure
10968: I'm not quite ready to invent (e.g. an ssi_with_retry object).
10969: 
10970: At least the logic that drives this has been pulled out into loncommon.
10971: 
10972: 
10973: 
10974: ssi_with_retries - Does the server side include of a resource.
10975:                      if the ssi call returns an error we'll retry it up to
10976:                      the number of times requested by the caller.
10977:                      If we still have a problem, no text is appended to the
10978:                      output and we set some global variables.
10979:                      to indicate to the caller an SSI error occurred.  
10980:                      All of this is supposed to deal with the issues described
10981:                      in LON-CAPA BZ 5631 see:
10982:                      http://bugs.lon-capa.org/show_bug.cgi?id=5631
10983:                      by informing the user that this happened.
10984: 
10985: Parameters:
10986:   resource   - The resource to include.  This is passed directly, without
10987:                interpretation to lonnet::ssi.
10988:   form       - The form hash parameters that guide the interpretation of the resource
10989:                
10990:   retries    - Number of retries allowed before giving up completely.
10991: Returns:
10992:   On success, returns the rendered resource identified by the resource parameter.
10993: Side Effects:
10994:   The following global variables can be set:
10995:    ssi_error                - If an unrecoverable error occurred this becomes true.
10996:                               It is up to the caller to initialize this to false
10997:                               if desired.
10998:    ssi_error_resource  - If an unrecoverable error occurred, this is the value
10999:                               of the resource that could not be rendered by the ssi
11000:                               call.
11001:    ssi_error_message   - The error string fetched from the ssi response
11002:                               in the event of an error.
11003: 
11004: 
11005: =head1 HANDLER SUBROUTINE
11006: 
11007: ssi_with_retries()
11008: 
11009: =head1 SUBROUTINES
11010: 
11011: =over
11012: 
11013: =head1 Routines to display previous version of a Task for a specific student
11014: 
11015: Tasks are graded pass/fail. Students who have yet to pass a particular Task
11016: can receive another opportunity. Access to tasks is slot-based. If a slot
11017: requires a proctor to check-in the student, a new version of the Task will
11018: be created when the student is checked in to the new opportunity.
11019: 
11020: If a particular student has tried two or more versions of a particular task,
11021: the submission screen provides a user with vgr privileges (e.g., a Course
11022: Coordinator) the ability to display a previous version worked on by the
11023: student.  By default, the current version is displayed. If a previous version
11024: has been selected for display, submission data are only shown that pertain
11025: to that particular version, and the interface to submit grades is not shown.
11026: 
11027: =over 4
11028: 
11029: =item show_previous_task_version()
11030: 
11031: Displays a specified version of a student's Task, as the student sees it.
11032: 
11033: Inputs: 2
11034:         request - request object
11035:         symb    - unique symb for current instance of resource
11036: 
11037: Output: None.
11038: 
11039: Side Effects: calls &show_problem() to print version of Task, with
11040:               version contained in form item: $env{'form.previousversion'}
11041: 
11042: =item choose_task_version_form()
11043: 
11044: Displays a web form used to select which version of a student's view of a
11045: Task should be displayed.  Either launches a pop-up window, or replaces
11046: content in existing pop-up, or replaces page in main window.
11047: 
11048: Inputs: 4
11049:         symb    - unique symb for current instance of resource
11050:         uname   - username of student
11051:         udom    - domain of student
11052:         nomenu  - 1 if display is in a pop-up window, and hence no menu
11053:                   breadcrumbs etc., are displayed
11054: 
11055: Output: 4
11056:         current   - student's current version
11057:         displayed - student's version being displayed
11058:         result    - scalar containing HTML for web form used to switch to
11059:                     a different version (or a link to close window, if pop-up).
11060:         js        - javascript for processing selection in versions web form
11061: 
11062: Side Effects: None.
11063: 
11064: =item previous_display_javascript()
11065: 
11066: Inputs: 2
11067:         nomenu  - 1 if display is in a pop-up window, and hence no menu
11068:                   breadcrumbs etc., are displayed.
11069:         current - student's current version number.
11070: 
11071: Output: 1
11072:         js      - javascript for processing selection in versions web form.
11073: 
11074: Side Effects: None.
11075: 
11076: =back
11077: 
11078: =head1 Routines to process bubblesheet data.
11079: 
11080: =over 4
11081: 
11082: =item scantron_get_correction() : 
11083: 
11084:    Builds the interface screen to interact with the operator to fix a
11085:    specific error condition in a specific scanline
11086: 
11087:  Arguments:
11088:     $r           - Apache request object
11089:     $i           - number of the current scanline
11090:     $scan_record - hash ref as returned from &scantron_parse_scanline()
11091:     $scan_config - hash ref as returned from &Apache::lonnet::get_scantron_config()
11092:     $line        - full contents of the current scanline
11093:     $error       - error condition, valid values are
11094:                    'incorrectCODE', 'duplicateCODE',
11095:                    'doublebubble', 'missingbubble',
11096:                    'duplicateID', 'incorrectID'
11097:     $arg         - extra information needed
11098:        For errors:
11099:          - duplicateID   - paper number that this studentID was seen before on
11100:          - duplicateCODE - array ref of the paper numbers this CODE was
11101:                            seen on before
11102:          - incorrectCODE - current incorrect CODE 
11103:          - doublebubble  - array ref of the bubble lines that have double
11104:                            bubble errors
11105:          - missingbubble - array ref of the bubble lines that have missing
11106:                            bubble errors
11107: 
11108:    $randomorder - True if exam folder has randomorder set
11109:    $randompick  - True if exam folder has randompick set
11110:    $respnumlookup - Reference to HASH mapping question numbers in bubble lines
11111:                      for current line to question number used for same question
11112:                      in "Master Seqence" (as seen by Course Coordinator).
11113:    $startline   - Reference to hash where key is question number (0 is first)
11114:                   and value is number of first bubble line for current student
11115:                   or code-based randompick and/or randomorder.
11116: 
11117: 
11118: 
11119: =item  scantron_get_maxbubble() : 
11120: 
11121:    Arguments:
11122:        $nav_error  - Reference to scalar which is a flag to indicate a
11123:                       failure to retrieve a navmap object.
11124:        if $nav_error is set to 1 by scantron_get_maxbubble(), the 
11125:        calling routine should trap the error condition and display the warning
11126:        found in &navmap_errormsg().
11127: 
11128:        $scantron_config - Reference to bubblesheet format configuration hash.
11129: 
11130:    Returns the maximum number of bubble lines that are expected to
11131:    occur. Does this by walking the selected sequence rendering the
11132:    resource and then checking &Apache::lonxml::get_problem_counter()
11133:    for what the current value of the problem counter is.
11134: 
11135:    Caches the results to $env{'form.scantron_maxbubble'},
11136:    $env{'form.scantron.bubble_lines.n'}, 
11137:    $env{'form.scantron.first_bubble_line.n'} and
11138:    $env{"form.scantron.sub_bubblelines.n"}
11139:    which are the total number of bubble lines, the number of bubble
11140:    lines for response n and number of the first bubble line for response n,
11141:    and a comma separated list of numbers of bubble lines for sub-questions
11142:    (for optionresponse, matchresponse, and rankresponse items), for response n.  
11143: 
11144: 
11145: =item  scantron_validate_missingbubbles() : 
11146: 
11147:    Validates all scanlines in the selected file to not have any
11148:     answers that don't have bubbles that have not been verified
11149:     to be bubble free.
11150: 
11151: =item  scantron_process_students() : 
11152: 
11153:    Routine that does the actual grading of the bubblesheet information.
11154: 
11155:    The parsed scanline hash is added to %env 
11156: 
11157:    Then foreach unskipped scanline it does an &Apache::lonnet::ssi()
11158:    foreach resource , with the form data of
11159: 
11160: 	'submitted'     =>'scantron' 
11161: 	'grade_target'  =>'grade',
11162: 	'grade_username'=> username of student
11163: 	'grade_domain'  => domain of student
11164: 	'grade_courseid'=> of course
11165: 	'grade_symb'    => symb of resource to grade
11166: 
11167:     This triggers a grading pass. The problem grading code takes care
11168:     of converting the bubbled letter information (now in %env) into a
11169:     valid submission.
11170: 
11171: =item  scantron_upload_scantron_data() :
11172: 
11173:     Creates the screen for adding a new bubblesheet data file to a course.
11174: 
11175: =item  scantron_upload_scantron_data_save() : 
11176: 
11177:    Adds a provided bubble information data file to the course if user
11178:    has the correct privileges to do so. 
11179: 
11180: =item  valid_file() :
11181: 
11182:    Validates that the requested bubble data file exists in the course.
11183: 
11184: =item  scantron_download_scantron_data() : 
11185: 
11186:    Shows a list of the three internal files (original, corrected,
11187:    skipped) for a specific bubblesheet data file that exists in the
11188:    course.
11189: 
11190: =item  scantron_validate_ID() : 
11191: 
11192:    Validates all scanlines in the selected file to not have any
11193:    invalid or underspecified student/employee IDs
11194: 
11195: =item navmap_errormsg() :
11196: 
11197:    Returns HTML mark-up inside a <div></div> with a link to re-initialize the course.
11198:    Should be called whenever the request to instantiate a navmap object fails.
11199: 
11200: =back
11201: 
11202: =back
11203: 
11204: =cut

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