File:  [LON-CAPA] / loncom / homework / grades.pm
Revision 1.552: download - view: text, annotated - select for diffs
Wed Feb 18 07:06:12 2009 UTC (15 years, 2 months ago) by raeburn
Branches: MAIN
CVS tags: HEAD
- Starting with lonnet.pm rev 1.981, default for &lonnet::delenv() has been to \Q escape arg in regexp used to identify items in environment to delete.
  - No longer need to escape special characters in arg passed to lonnet::delenv().
- Call to lonnet::delenv() in rat/lonuserstate now includes second arg, because in this case first arg is to be treated as a regexp (so \Q escape is not wanted).

    1: # The LearningOnline Network with CAPA
    2: # The LON-CAPA Grading handler
    3: #
    4: # $Id: grades.pm,v 1.552 2009/02/18 07:06:12 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);
   44: use Apache::lonlocal;
   45: use Apache::lonenc;
   46: use String::Similarity;
   47: use LONCAPA;
   48: 
   49: use POSIX qw(floor);
   50: 
   51: 
   52: 
   53: my %perm=();
   54: 
   55: #  These variables are used to recover from ssi errors
   56: 
   57: my $ssi_retries = 5;
   58: my $ssi_error;
   59: my $ssi_error_resource;
   60: my $ssi_error_message;
   61: 
   62: 
   63: sub ssi_with_retries {
   64:     my ($resource, $retries, %form) = @_;
   65:     my ($content, $response) = &Apache::loncommon::ssi_with_retries($resource, $retries, %form);
   66:     if ($response->is_error) {
   67: 	$ssi_error          = 1;
   68: 	$ssi_error_resource = $resource;
   69: 	$ssi_error_message  = $response->code . " " . $response->message;
   70:     }
   71: 
   72:     return $content;
   73: 
   74: }
   75: #
   76: #  Prodcuces an ssi retry failure error message to the user:
   77: #
   78: 
   79: sub ssi_print_error {
   80:     my ($r) = @_;
   81:     my $helpurl = &Apache::loncommon::top_nav_help('Helpdesk');
   82:     $r->print('
   83: <br />
   84: <h2>'.&mt('An unrecoverable network error occurred:').'</h2>
   85: <p>
   86: '.&mt('Unable to retrieve a resource from a server:').'<br />
   87: '.&mt('Resource:').' '.$ssi_error_resource.'<br />
   88: '.&mt('Error:').' '.$ssi_error_message.'
   89: </p>
   90: <p>'.
   91: &mt('It is recommended that you try again later, as this error may mean the server was just temporarily unavailable, or is down for maintenance.').'<br />'.
   92: &mt('If the error persists, please contact the [_1] for assistance.',$helpurl).
   93: '</p>');
   94:     return;
   95: }
   96: 
   97: #
   98: # --- Retrieve the parts from the metadata file.---
   99: sub getpartlist {
  100:     my ($symb) = @_;
  101: 
  102:     my $navmap   = Apache::lonnavmaps::navmap->new();
  103:     my $res      = $navmap->getBySymb($symb);
  104:     my $partlist = $res->parts();
  105:     my $url      = $res->src();
  106:     my @metakeys = split(/,/,&Apache::lonnet::metadata($url,'keys'));
  107: 
  108:     my @stores;
  109:     foreach my $part (@{ $partlist }) {
  110: 	foreach my $key (@metakeys) {
  111: 	    if ($key =~ m/^stores_\Q$part\E_/) { push(@stores,$key); }
  112: 	}
  113:     }
  114:     return @stores;
  115: }
  116: 
  117: # --- Get the symbolic name of a problem and the url
  118: sub get_symb {
  119:     my ($request,$silent) = @_;
  120:     (my $url=$env{'form.url'}) =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
  121:     my $symb=($env{'form.symb'} ne '' ? $env{'form.symb'} : (&Apache::lonnet::symbread($url)));
  122:     if ($symb eq '') { 
  123: 	if (!$silent) {
  124: 	    $request->print("Unable to handle ambiguous references:$url:.");
  125: 	    return ();
  126: 	}
  127:     }
  128:     &Apache::lonenc::check_decrypt(\$symb);
  129:     return ($symb);
  130: }
  131: 
  132: #--- Format fullname, username:domain if different for display
  133: #--- Use anywhere where the student names are listed
  134: sub nameUserString {
  135:     my ($type,$fullname,$uname,$udom) = @_;
  136:     if ($type eq 'header') {
  137: 	return '<b>&nbsp;'.&mt('Fullname').'&nbsp;</b><span class="LC_internal_info">('.&mt('Username').')</span>';
  138:     } else {
  139: 	return '&nbsp;'.$fullname.'<span class="LC_internal_info">&nbsp;('.$uname.
  140: 	    ($env{'user.domain'} eq $udom ? '' : ' ('.$udom.')').')</span>';
  141:     }
  142: }
  143: 
  144: #--- Get the partlist and the response type for a given problem. ---
  145: #--- Indicate if a response type is coded handgraded or not. ---
  146: sub response_type {
  147:     my ($symb) = shift;
  148: 
  149:     my $navmap = Apache::lonnavmaps::navmap->new();
  150:     my $res = $navmap->getBySymb($symb);
  151:     my $partlist = $res->parts();
  152:     my %vPart = 
  153: 	map { $_ => 1 } (&Apache::loncommon::get_env_multiple('form.vPart'));
  154:     my (%response_types,%handgrade);
  155:     foreach my $part (@{ $partlist }) {
  156: 	next if (%vPart && !exists($vPart{$part}));
  157: 
  158: 	my @types = $res->responseType($part);
  159: 	my @ids = $res->responseIds($part);
  160: 	for (my $i=0; $i < scalar(@ids); $i++) {
  161: 	    $response_types{$part}{$ids[$i]} = $types[$i];
  162: 	    $handgrade{$part.'_'.$ids[$i]} = 
  163: 		&Apache::lonnet::EXT('resource.'.$part.'_'.$ids[$i].
  164: 				     '.handgrade',$symb);
  165: 	}
  166:     }
  167:     return ($partlist,\%handgrade,\%response_types);
  168: }
  169: 
  170: sub flatten_responseType {
  171:     my ($responseType) = @_;
  172:     my @part_response_id =
  173: 	map { 
  174: 	    my $part = $_;
  175: 	    map {
  176: 		[$part,$_]
  177: 		} sort(keys(%{ $responseType->{$part} }));
  178: 	} sort(keys(%$responseType));
  179:     return @part_response_id;
  180: }
  181: 
  182: sub get_display_part {
  183:     my ($partID,$symb)=@_;
  184:     my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',$symb);
  185:     if (defined($display) and $display ne '') {
  186: 	$display.= " (<span class=\"LC_internal_info\">id $partID</span>)";
  187:     } else {
  188: 	$display=$partID;
  189:     }
  190:     return $display;
  191: }
  192: 
  193: #--- Show resource title
  194: #--- and parts and response type
  195: sub showResourceInfo {
  196:     my ($symb,$probTitle,$checkboxes) = @_;
  197:     my $col=3;
  198:     if ($checkboxes) { $col=4; }
  199:     my $result = '<h3>'.&mt('Current Resource').': '.$probTitle.'</h3>'."\n";
  200:     $result .='<table border="0">';
  201:     my ($partlist,$handgrade,$responseType) = &response_type($symb);
  202:     my %resptype = ();
  203:     my $hdgrade='no';
  204:     my %partsseen;
  205:     foreach my $partID (sort(keys(%$responseType))) {
  206: 	foreach my $resID (sort(keys(%{ $responseType->{$partID} }))) {
  207: 	    my $handgrade=$$handgrade{$partID.'_'.$resID};
  208: 	    my $responsetype = $responseType->{$partID}->{$resID};
  209: 	    $hdgrade = $handgrade if ($handgrade eq 'yes');
  210: 	    $result.='<tr>';
  211: 	    if ($checkboxes) {
  212: 		if (exists($partsseen{$partID})) {
  213: 		    $result.="<td>&nbsp;</td>";
  214: 		} else {
  215: 		    $result.="<td><input type='checkbox' name='vPart' value='$partID' checked='checked' /></td>";
  216: 		}
  217: 		$partsseen{$partID}=1;
  218: 	    }
  219: 	    my $display_part=&get_display_part($partID,$symb);
  220: 	    $result.='<td><b>'.&mt('Part').': </b>'.$display_part.
  221:                 ' <span class="LC_internal_info">'.$resID.'</span></td>'.
  222: 		'<td><b>'.&mt('Type').': </b>'.$responsetype.'</td></tr>';
  223: #	    '<td>'.&mt('<b>Handgrade: </b>[_1]',$handgrade).'</td></tr>';
  224: 	}
  225:     }
  226:     $result.='</table>'."\n";
  227:     return $result,$responseType,$hdgrade,$partlist,$handgrade;
  228: }
  229: 
  230: sub reset_caches {
  231:     &reset_analyze_cache();
  232:     &reset_perm();
  233: }
  234: 
  235: {
  236:     my %analyze_cache;
  237: 
  238:     sub reset_analyze_cache {
  239: 	undef(%analyze_cache);
  240:     }
  241: 
  242:     sub get_analyze {
  243: 	my ($symb,$uname,$udom,$no_increment)=@_;
  244: 	my $key = "$symb\0$uname\0$udom";
  245: 	return $analyze_cache{$key} if (exists($analyze_cache{$key}));
  246: 
  247: 	my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
  248: 	$url=&Apache::lonnet::clutter($url);
  249: 	my $subresult=&ssi_with_retries($url, $ssi_retries,
  250: 					   ('grade_target' => 'analyze',
  251: 					    'grade_domain' => $udom,
  252: 					    'grade_symb' => $symb,
  253: 					    'grade_courseid' => 
  254: 					    $env{'request.course.id'},
  255: 					    'grade_username' => $uname,
  256:                                             'grade_noincrement' => $no_increment));
  257: 	(undef,$subresult)=split(/_HASH_REF__/,$subresult,2);
  258: 	my %analyze=&Apache::lonnet::str2hash($subresult);
  259: 	return $analyze_cache{$key} = \%analyze;
  260:     }
  261: 
  262:     sub get_order {
  263: 	my ($partid,$respid,$symb,$uname,$udom,$no_increment)=@_;
  264: 	my $analyze = &get_analyze($symb,$uname,$udom,$no_increment);
  265: 	return $analyze->{"$partid.$respid.shown"};
  266:     }
  267: 
  268:     sub get_radiobutton_correct_foil {
  269: 	my ($partid,$respid,$symb,$uname,$udom)=@_;
  270: 	my $analyze = &get_analyze($symb,$uname,$udom);
  271: 	foreach my $foil (@{&get_order($partid,$respid,$symb,$uname,$udom)}) {
  272: 	    if ($analyze->{"$partid.$respid.foil.value.$foil"} eq 'true') {
  273: 		return $foil;
  274: 	    }
  275: 	}
  276:     }
  277: }
  278: 
  279: #--- Clean response type for display
  280: #--- Currently filters option/rank/radiobutton/match/essay/Task
  281: #        response types only.
  282: sub cleanRecord {
  283:     my ($answer,$response,$symb,$partid,$respid,$record,$order,$version,
  284: 	$uname,$udom) = @_;
  285:     my $grayFont = '<span class="LC_internal_info">';
  286:     if ($response =~ /^(option|rank)$/) {
  287: 	my %answer=&Apache::lonnet::str2hash($answer);
  288: 	my %grading=&Apache::lonnet::str2hash($record->{$version."resource.$partid.$respid.submissiongrading"});
  289: 	my ($toprow,$bottomrow);
  290: 	foreach my $foil (@$order) {
  291: 	    if ($grading{$foil} == 1) {
  292: 		$toprow.='<td><b>'.$answer{$foil}.'&nbsp;</b></td>';
  293: 	    } else {
  294: 		$toprow.='<td><i>'.$answer{$foil}.'&nbsp;</i></td>';
  295: 	    }
  296: 	    $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
  297: 	}
  298: 	return '<blockquote><table border="1">'.
  299: 	    '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
  300: 	    '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
  301: 	    $grayFont.$bottomrow.'</tr>'.'</table></blockquote>';
  302:     } elsif ($response eq 'match') {
  303: 	my %answer=&Apache::lonnet::str2hash($answer);
  304: 	my %grading=&Apache::lonnet::str2hash($record->{$version."resource.$partid.$respid.submissiongrading"});
  305: 	my @items=&Apache::lonnet::str2array($record->{$version."resource.$partid.$respid.submissionitems"});
  306: 	my ($toprow,$middlerow,$bottomrow);
  307: 	foreach my $foil (@$order) {
  308: 	    my $item=shift(@items);
  309: 	    if ($grading{$foil} == 1) {
  310: 		$toprow.='<td><b>'.$item.'&nbsp;</b></td>';
  311: 		$middlerow.='<td><b>'.$grayFont.$answer{$foil}.'&nbsp;</span></b></td>';
  312: 	    } else {
  313: 		$toprow.='<td><i>'.$item.'&nbsp;</i></td>';
  314: 		$middlerow.='<td><i>'.$grayFont.$answer{$foil}.'&nbsp;</span></i></td>';
  315: 	    }
  316: 	    $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
  317: 	}
  318: 	return '<blockquote><table border="1">'.
  319: 	    '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
  320: 	    '<tr valign="top"><td>'.$grayFont.&mt('Item ID').'</span></td>'.
  321: 	    $middlerow.'</tr>'.
  322: 	    '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
  323: 	    $bottomrow.'</tr>'.'</table></blockquote>';
  324:     } elsif ($response eq 'radiobutton') {
  325: 	my %answer=&Apache::lonnet::str2hash($answer);
  326: 	my ($toprow,$bottomrow);
  327: 	my $correct = 
  328: 	    &get_radiobutton_correct_foil($partid,$respid,$symb,$uname,$udom);
  329: 	foreach my $foil (@$order) {
  330: 	    if (exists($answer{$foil})) {
  331: 		if ($foil eq $correct) {
  332: 		    $toprow.='<td><b>'.&mt('true').'</b></td>';
  333: 		} else {
  334: 		    $toprow.='<td><i>'.&mt('true').'</i></td>';
  335: 		}
  336: 	    } else {
  337: 		$toprow.='<td>'.&mt('false').'</td>';
  338: 	    }
  339: 	    $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
  340: 	}
  341: 	return '<blockquote><table border="1">'.
  342: 	    '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
  343: 	    '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
  344: 	    $grayFont.$bottomrow.'</tr>'.'</table></blockquote>';
  345:     } elsif ($response eq 'essay') {
  346: 	if (! exists ($env{'form.'.$symb})) {
  347: 	    my (%keyhash) = &Apache::lonnet::dump('nohist_handgrade',
  348: 						  $env{'course.'.$env{'request.course.id'}.'.domain'},
  349: 						  $env{'course.'.$env{'request.course.id'}.'.num'});
  350: 
  351: 	    my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
  352: 	    $env{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';
  353: 	    $env{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';
  354: 	    $env{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';
  355: 	    $env{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
  356: 	    $env{'form.'.$symb} = 1; # so that we don't have to read it from disk for multiple sub of the same prob.
  357: 	}
  358: 	$answer =~ s-\n-<br />-g;
  359: 	return '<br /><br /><blockquote><tt>'.&keywords_highlight($answer).'</tt></blockquote>';
  360:     } elsif ( $response eq 'organic') {
  361: 	my $result='Smile representation: "<tt>'.$answer.'</tt>"';
  362: 	my $jme=$record->{$version."resource.$partid.$respid.molecule"};
  363: 	$result.=&Apache::chemresponse::jme_img($jme,$answer,400);
  364: 	return $result;
  365:     } elsif ( $response eq 'Task') {
  366: 	if ( $answer eq 'SUBMITTED') {
  367: 	    my $files = $record->{$version."resource.$respid.$partid.bridgetask.portfiles"};
  368: 	    my $result = &Apache::bridgetask::file_list($files,$uname,$udom);
  369: 	    return $result;
  370: 	} elsif ( grep(/^\Q$version\E.*?\.instance$/, keys(%{$record})) ) {
  371: 	    my @matches = grep(/^\Q$version\E.*?\.instance$/,
  372: 			       keys(%{$record}));
  373: 	    return join('<br />',($version,@matches));
  374: 			       
  375: 			       
  376: 	} else {
  377: 	    my $result =
  378: 		'<p>'
  379: 		.&mt('Overall result: [_1]',
  380: 		     $record->{$version."resource.$respid.$partid.status"})
  381: 		.'</p>';
  382: 	    
  383: 	    $result .= '<ul>';
  384: 	    my @grade = grep(/^\Q${version}resource.$respid.$partid.\E[^.]*[.]status$/,
  385: 			     keys(%{$record}));
  386: 	    foreach my $grade (sort(@grade)) {
  387: 		my ($dim) = ($grade =~/[.]([^.]+)[.]status$/);
  388: 		$result.= '<li>'.&mt("Dimension: [_1], status [_2] ",
  389: 				     $dim, $record->{$grade}).
  390: 			  '</li>';
  391: 	    }
  392: 	    $result.='</ul>';
  393: 	    return $result;
  394: 	}
  395:     } elsif ( $response =~ m/(?:numerical|formula)/) {
  396: 	$answer = 
  397: 	    &Apache::loncommon::format_previous_attempt_value('submission',
  398: 							      $answer);
  399:     }
  400:     return $answer;
  401: }
  402: 
  403: #-- A couple of common js functions
  404: sub commonJSfunctions {
  405:     my $request = shift;
  406:     $request->print(<<COMMONJSFUNCTIONS);
  407: <script type="text/javascript" language="javascript">
  408:     function radioSelection(radioButton) {
  409: 	var selection=null;
  410: 	if (radioButton.length > 1) {
  411: 	    for (var i=0; i<radioButton.length; i++) {
  412: 		if (radioButton[i].checked) {
  413: 		    return radioButton[i].value;
  414: 		}
  415: 	    }
  416: 	} else {
  417: 	    if (radioButton.checked) return radioButton.value;
  418: 	}
  419: 	return selection;
  420:     }
  421: 
  422:     function pullDownSelection(selectOne) {
  423: 	var selection="";
  424: 	if (selectOne.length > 1) {
  425: 	    for (var i=0; i<selectOne.length; i++) {
  426: 		if (selectOne[i].selected) {
  427: 		    return selectOne[i].value;
  428: 		}
  429: 	    }
  430: 	} else {
  431:             // only one value it must be the selected one
  432: 	    return selectOne.value;
  433: 	}
  434:     }
  435: </script>
  436: COMMONJSFUNCTIONS
  437: }
  438: 
  439: #--- Dumps the class list with usernames,list of sections,
  440: #--- section, ids and fullnames for each user.
  441: sub getclasslist {
  442:     my ($getsec,$filterlist,$getgroup) = @_;
  443:     my @getsec;
  444:     my @getgroup;
  445:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
  446:     if (!ref($getsec)) {
  447: 	if ($getsec ne '' && $getsec ne 'all') {
  448: 	    @getsec=($getsec);
  449: 	}
  450:     } else {
  451: 	@getsec=@{$getsec};
  452:     }
  453:     if (grep(/^all$/,@getsec)) { undef(@getsec); }
  454:     if (!ref($getgroup)) {
  455: 	if ($getgroup ne '' && $getgroup ne 'all') {
  456: 	    @getgroup=($getgroup);
  457: 	}
  458:     } else {
  459: 	@getgroup=@{$getgroup};
  460:     }
  461:     if (grep(/^all$/,@getgroup)) { undef(@getgroup); }
  462: 
  463:     my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist();
  464:     # Bail out if we were unable to get the classlist
  465:     return if (! defined($classlist));
  466:     &Apache::loncoursedata::get_group_memberships($classlist,$keylist);
  467:     #
  468:     my %sections;
  469:     my %fullnames;
  470:     foreach my $student (keys(%$classlist)) {
  471:         my $end      = 
  472:             $classlist->{$student}->[&Apache::loncoursedata::CL_END()];
  473:         my $start    = 
  474:             $classlist->{$student}->[&Apache::loncoursedata::CL_START()];
  475:         my $id       = 
  476:             $classlist->{$student}->[&Apache::loncoursedata::CL_ID()];
  477:         my $section  = 
  478:             $classlist->{$student}->[&Apache::loncoursedata::CL_SECTION()];
  479:         my $fullname = 
  480:             $classlist->{$student}->[&Apache::loncoursedata::CL_FULLNAME()];
  481:         my $status   = 
  482:             $classlist->{$student}->[&Apache::loncoursedata::CL_STATUS()];
  483:         my $group   = 
  484:             $classlist->{$student}->[&Apache::loncoursedata::CL_GROUP()];
  485: 	# filter students according to status selected
  486: 	if ($filterlist && (!($stu_status =~ /Any/))) {
  487: 	    if (!($stu_status =~ $status)) {
  488: 		delete($classlist->{$student});
  489: 		next;
  490: 	    }
  491: 	}
  492: 	# filter students according to groups selected
  493: 	my @stu_groups = split(/,/,$group);
  494: 	if (@getgroup) {
  495: 	    my $exclude = 1;
  496: 	    foreach my $grp (@getgroup) {
  497: 	        foreach my $stu_group (@stu_groups) {
  498: 	            if ($stu_group eq $grp) {
  499: 	                $exclude = 0;
  500:     	            } 
  501: 	        }
  502:     	        if (($grp eq 'none') && !$group) {
  503:         	        $exclude = 0;
  504:         	}
  505: 	    }
  506: 	    if ($exclude) {
  507: 	        delete($classlist->{$student});
  508: 	    }
  509: 	}
  510: 	$section = ($section ne '' ? $section : 'none');
  511: 	if (&canview($section)) {
  512: 	    if (!@getsec || grep(/^\Q$section\E$/,@getsec)) {
  513: 		$sections{$section}++;
  514: 		if ($classlist->{$student}) {
  515: 		    $fullnames{$student}=$fullname;
  516: 		}
  517: 	    } else {
  518: 		delete($classlist->{$student});
  519: 	    }
  520: 	} else {
  521: 	    delete($classlist->{$student});
  522: 	}
  523:     }
  524:     my %seen = ();
  525:     my @sections = sort(keys(%sections));
  526:     return ($classlist,\@sections,\%fullnames);
  527: }
  528: 
  529: sub canmodify {
  530:     my ($sec)=@_;
  531:     if ($perm{'mgr'}) {
  532: 	if (!defined($perm{'mgr_section'})) {
  533: 	    # can modify whole class
  534: 	    return 1;
  535: 	} else {
  536: 	    if ($sec eq $perm{'mgr_section'}) {
  537: 		#can modify the requested section
  538: 		return 1;
  539: 	    } else {
  540: 		# can't modify the request section
  541: 		return 0;
  542: 	    }
  543: 	}
  544:     }
  545:     #can't modify
  546:     return 0;
  547: }
  548: 
  549: sub canview {
  550:     my ($sec)=@_;
  551:     if ($perm{'vgr'}) {
  552: 	if (!defined($perm{'vgr_section'})) {
  553: 	    # can modify whole class
  554: 	    return 1;
  555: 	} else {
  556: 	    if ($sec eq $perm{'vgr_section'}) {
  557: 		#can modify the requested section
  558: 		return 1;
  559: 	    } else {
  560: 		# can't modify the request section
  561: 		return 0;
  562: 	    }
  563: 	}
  564:     }
  565:     #can't modify
  566:     return 0;
  567: }
  568: 
  569: #--- Retrieve the grade status of a student for all the parts
  570: sub student_gradeStatus {
  571:     my ($symb,$udom,$uname,$partlist) = @_;
  572:     my %record     = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
  573:     my %partstatus = ();
  574:     foreach (@$partlist) {
  575: 	my ($status,undef)   = split(/_/,$record{"resource.$_.solved"},2);
  576: 	$status              = 'nothing' if ($status eq '');
  577: 	$partstatus{$_}      = $status;
  578: 	my $subkey           = "resource.$_.submitted_by";
  579: 	$partstatus{$subkey} = $record{$subkey} if ($record{$subkey} ne '');
  580:     }
  581:     return %partstatus;
  582: }
  583: 
  584: # hidden form and javascript that calls the form
  585: # Use by verifyscript and viewgrades
  586: # Shows a student's view of problem and submission
  587: sub jscriptNform {
  588:     my ($symb) = @_;
  589:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
  590:     my $jscript='<script type="text/javascript" language="javascript">'."\n".
  591: 	'    function viewOneStudent(user,domain) {'."\n".
  592: 	'	document.onestudent.student.value = user;'."\n".
  593: 	'	document.onestudent.userdom.value = domain;'."\n".
  594: 	'	document.onestudent.submit();'."\n".
  595: 	'    }'."\n".
  596: 	'</script>'."\n";
  597:     $jscript.= '<form action="/adm/grades" method="post" name="onestudent">'."\n".
  598: 	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
  599: 	'<input type="hidden" name="saveState" value="'.$env{'form.saveState'}.'" />'."\n".
  600: 	'<input type="hidden" name="probTitle" value="'.$env{'form.probTitle'}.'" />'."\n".
  601: 	'<input type="hidden" name="Status"  value="'.$stu_status.'" />'."\n".
  602: 	'<input type="hidden" name="command" value="submission" />'."\n".
  603: 	'<input type="hidden" name="student" value="" />'."\n".
  604: 	'<input type="hidden" name="userdom" value="" />'."\n".
  605: 	'</form>'."\n";
  606:     return $jscript;
  607: }
  608: 
  609: 
  610: 
  611: # Given the score (as a number [0-1] and the weight) what is the final
  612: # point value? This function will round to the nearest tenth, third,
  613: # or quarter if one of those is within the tolerance of .00001.
  614: sub compute_points {
  615:     my ($score, $weight) = @_;
  616:     
  617:     my $tolerance = .00001;
  618:     my $points = $score * $weight;
  619: 
  620:     # Check for nearness to 1/x.
  621:     my $check_for_nearness = sub {
  622:         my ($factor) = @_;
  623:         my $num = ($points * $factor) + $tolerance;
  624:         my $floored_num = floor($num);
  625:         if ($num - $floored_num < 2 * $tolerance * $factor) {
  626:             return $floored_num / $factor;
  627:         }
  628:         return $points;
  629:     };
  630: 
  631:     $points = $check_for_nearness->(10);
  632:     $points = $check_for_nearness->(3);
  633:     $points = $check_for_nearness->(4);
  634:     
  635:     return $points;
  636: }
  637: 
  638: #------------------ End of general use routines --------------------
  639: 
  640: #
  641: # Find most similar essay
  642: #
  643: 
  644: sub most_similar {
  645:     my ($uname,$udom,$uessay,$old_essays)=@_;
  646: 
  647: # ignore spaces and punctuation
  648: 
  649:     $uessay=~s/\W+/ /gs;
  650: 
  651: # ignore empty submissions (occuring when only files are sent)
  652: 
  653:     unless ($uessay=~/\w+/) { return ''; }
  654: 
  655: # these will be returned. Do not care if not at least 50 percent similar
  656:     my $limit=0.6;
  657:     my $sname='';
  658:     my $sdom='';
  659:     my $scrsid='';
  660:     my $sessay='';
  661: # go through all essays ...
  662:     foreach my $tkey (keys(%$old_essays)) {
  663: 	my ($tname,$tdom,$tcrsid)=map {&unescape($_)} (split(/\./,$tkey));
  664: # ... except the same student
  665:         next if (($tname eq $uname) && ($tdom eq $udom));
  666: 	my $tessay=$old_essays->{$tkey};
  667: 	$tessay=~s/\W+/ /gs;
  668: # String similarity gives up if not even limit
  669: 	my $tsimilar=&String::Similarity::similarity($uessay,$tessay,$limit);
  670: # Found one
  671: 	if ($tsimilar>$limit) {
  672: 	    $limit=$tsimilar;
  673: 	    $sname=$tname;
  674: 	    $sdom=$tdom;
  675: 	    $scrsid=$tcrsid;
  676: 	    $sessay=$old_essays->{$tkey};
  677: 	}
  678:     }
  679:     if ($limit>0.6) {
  680:        return ($sname,$sdom,$scrsid,$sessay,$limit);
  681:     } else {
  682:        return ('','','','',0);
  683:     }
  684: }
  685: 
  686: #-------------------------------------------------------------------
  687: 
  688: #------------------------------------ Receipt Verification Routines
  689: #
  690: #--- Check whether a receipt number is valid.---
  691: sub verifyreceipt {
  692:     my $request  = shift;
  693: 
  694:     my $courseid = $env{'request.course.id'};
  695:     my $receipt  = &Apache::lonnet::recprefix($courseid).'-'.
  696: 	$env{'form.receipt'};
  697:     $receipt     =~ s/[^\-\d]//g;
  698:     my ($symb)   = &get_symb($request);
  699: 
  700:     my $title.=
  701: 	'<h3><span class="LC_info">'.
  702: 	&mt('Verifying Submission Receipt [_1]',$receipt).
  703: 	'</span></h3>'."\n".
  704: 	'<h4>'.&mt('<b>Resource: </b>[_1]',$env{'form.probTitle'}).
  705: 	'</h4>'."\n";
  706: 
  707:     my ($string,$contents,$matches) = ('','',0);
  708:     my (undef,undef,$fullname) = &getclasslist('all','0');
  709:     
  710:     my $receiptparts=0;
  711:     if ($env{"course.$courseid.receiptalg"} eq 'receipt2' ||
  712: 	$env{"course.$courseid.receiptalg"} eq 'receipt3') { $receiptparts=1; }
  713:     my $parts=['0'];
  714:     if ($receiptparts) { ($parts)=&response_type($symb); }
  715:     
  716:     my $header = 
  717: 	&Apache::loncommon::start_data_table().
  718: 	&Apache::loncommon::start_data_table_header_row().
  719: 	'<th>&nbsp;'.&mt('Fullname').'&nbsp;</th>'."\n".
  720: 	'<th>&nbsp;'.&mt('Username').'&nbsp;</th>'."\n".
  721: 	'<th>&nbsp;'.&mt('Domain').'&nbsp;</th>';
  722:     if ($receiptparts) {
  723: 	$header.='<th>&nbsp;'.&mt('Problem Part').'&nbsp;</th>';
  724:     }
  725:     $header.=
  726: 	&Apache::loncommon::end_data_table_header_row();
  727: 
  728:     foreach (sort 
  729: 	     {
  730: 		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
  731: 		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
  732: 		 }
  733: 		 return $a cmp $b;
  734: 	     } (keys(%$fullname))) {
  735: 	my ($uname,$udom)=split(/\:/);
  736: 	foreach my $part (@$parts) {
  737: 	    if ($receipt eq &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb,$part)) {
  738: 		$contents.=
  739: 		    &Apache::loncommon::start_data_table_row().
  740: 		    '<td>&nbsp;'."\n".
  741: 		    '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
  742: 		    '\');" target="_self">'.$$fullname{$_}.'</a>&nbsp;</td>'."\n".
  743: 		    '<td>&nbsp;'.$uname.'&nbsp;</td>'.
  744: 		    '<td>&nbsp;'.$udom.'&nbsp;</td>';
  745: 		if ($receiptparts) {
  746: 		    $contents.='<td>&nbsp;'.$part.'&nbsp;</td>';
  747: 		}
  748: 		$contents.= 
  749: 		    &Apache::loncommon::end_data_table_row()."\n";
  750: 		
  751: 		$matches++;
  752: 	    }
  753: 	}
  754:     }
  755:     if ($matches == 0) {
  756: 	$string = $title.&mt('No match found for the above receipt.');
  757:     } else {
  758: 	$string = &jscriptNform($symb).$title.
  759: 	    '<p>'.
  760: 	    &mt('The above receipt matches the following [numerate,_1,student].',$matches).
  761: 	    '</p>'.
  762: 	    $header.
  763: 	    $contents.
  764: 	    &Apache::loncommon::end_data_table()."\n";
  765:     }
  766:     return $string.&show_grading_menu_form($symb);
  767: }
  768: 
  769: #--- This is called by a number of programs.
  770: #--- Called from the Grading Menu - View/Grade an individual student
  771: #--- Also called directly when one clicks on the subm button 
  772: #    on the problem page.
  773: sub listStudents {
  774:     my ($request) = shift;
  775: 
  776:     my ($symb) = &get_symb($request);
  777:     my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
  778:     my $cnum      = $env{"course.$env{'request.course.id'}.num"};
  779:     my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
  780:     my $getgroup  = $env{'form.group'} eq '' ? 'all' : $env{'form.group'};
  781:     my $submitonly= $env{'form.submitonly'} eq '' ? 'all' : $env{'form.submitonly'};
  782:     my $viewgrade = $env{'form.showgrading'} eq 'yes' ? 'View/Grade/Regrade' : 'View';
  783:     $env{'form.probTitle'} = $env{'form.probTitle'} eq '' ? 
  784: 	&Apache::lonnet::gettitle($symb) : $env{'form.probTitle'};
  785: 
  786:     my $result='<h3><span class="LC_info">&nbsp;'
  787: 	.&mt("$viewgrade Submissions for a Student or a Group of Students")
  788: 	.'</span></h3>';
  789: 
  790:     my ($table,undef,$hdgrade,$partlist,$handgrade) = &showResourceInfo($symb,$env{'form.probTitle'},($env{'form.showgrading'} eq 'yes'));
  791: 
  792:     my %lt = ( 'multiple' =>
  793: 	       &mt("Please select a student or group of students before clicking on the Next button."),
  794: 	       'single'   =>
  795: 	       &mt("Please select the student before clicking on the Next button."),
  796: 	       );
  797:     %lt = &Apache::lonlocal::texthash(%lt);
  798:     $request->print(<<LISTJAVASCRIPT);
  799: <script type="text/javascript" language="javascript">
  800:     function checkSelect(checkBox) {
  801: 	var ctr=0;
  802: 	var sense="";
  803: 	if (checkBox.length > 1) {
  804: 	    for (var i=0; i<checkBox.length; i++) {
  805: 		if (checkBox[i].checked) {
  806: 		    ctr++;
  807: 		}
  808: 	    }
  809: 	    sense = '$lt{'multiple'}';
  810: 	} else {
  811: 	    if (checkBox.checked) {
  812: 		ctr = 1;
  813: 	    }
  814: 	    sense = '$lt{'single'}';
  815: 	}
  816: 	if (ctr == 0) {
  817: 	    alert(sense);
  818: 	    return false;
  819: 	}
  820: 	document.gradesub.submit();
  821:     }
  822: 
  823:     function reLoadList(formname) {
  824: 	if (formname.saveStatusOld.value == pullDownSelection(formname.Status)) {return;}
  825: 	formname.command.value = 'submission';
  826: 	formname.submit();
  827:     }
  828: </script>
  829: LISTJAVASCRIPT
  830: 
  831:     &commonJSfunctions($request);
  832:     $request->print($result);
  833: 
  834:     my $checkhdgrade = ($env{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1 ) ? 'checked="checked"' : '';
  835:     my $checklastsub = $checkhdgrade eq '' ? 'checked="checked"' : '';
  836:     my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'.
  837: 	"\n".$table;
  838: 	
  839:     $gradeTable .= 
  840: 	'&nbsp;<b>'.&mt('View Problem Text').': </b>'.
  841: 	    '<label><input type="radio" name="vProb" value="no" checked="checked" /> '.&mt('no').' </label>'."\n".
  842: 	    '<label><input type="radio" name="vProb" value="yes" /> '.&mt('one student').' </label>'."\n".
  843: 	    '<label><input type="radio" name="vProb" value="all" /> '.&mt('all students').' </label><br />'."\n";
  844:     $gradeTable .= 
  845: 	'&nbsp;<b>'.&mt('View Answer').': </b>'.
  846: 	    '<label><input type="radio" name="vAns" value="no"  /> '.&mt('no').' </label>'."\n".
  847: 	    '<label><input type="radio" name="vAns" value="yes" /> '.&mt('one student').' </label>'."\n".
  848: 	    '<label><input type="radio" name="vAns" value="all" checked="checked" /> '.&mt('all students').' </label><br />'."\n";
  849: 
  850:     my $submission_options;
  851:     if ($env{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1) {
  852: 	$submission_options.=
  853: 	    '<label><input type="radio" name="lastSub" value="hdgrade" '.$checkhdgrade.' /> '.&mt('essay part only').' </label>'."\n";
  854:     }
  855:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
  856:     my $saveStatus = $stu_status eq '' ? 'Active' : $stu_status;
  857:     $env{'form.Status'} = $saveStatus;
  858:     $submission_options.=
  859: 	'<label><input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> '.&mt('last submission only').' </label>'."\n".
  860: 	'<label><input type="radio" name="lastSub" value="last" /> '.&mt('last submission &amp; parts info').' </label>'."\n".
  861: 	'<label><input type="radio" name="lastSub" value="datesub" /> '.&mt('by dates and submissions').' </label>'."\n".
  862: 	'<label><input type="radio" name="lastSub" value="all" /> '.&mt('all details').'</label>';
  863:     $gradeTable .= 
  864: 	'&nbsp;<b>'.&mt('Submissions').': </b>'.$submission_options.'<br />'."\n";
  865: 
  866:     $gradeTable .= 
  867:         '&nbsp;<b>'.&mt('Grading Increments').': </b>'.
  868: 	    '<select name="increment">'.
  869: 	    '<option value="1">'.&mt('Whole Points').'</option>'.
  870: 	    '<option value=".5">'.&mt('Half Points').'</option>'.
  871: 	    '<option value=".25">'.&mt('Quarter Points').'</option>'.
  872: 	    '<option value=".1">'.&mt('Tenths of a Point').'</option>'.
  873: 	    '</select>';
  874:     
  875:     $gradeTable .= 
  876:         &build_section_inputs().
  877: 	'<input type="hidden" name="submitonly"  value="'.$submitonly.'" />'."\n".
  878: 	'<input type="hidden" name="handgrade"   value="'.$env{'form.handgrade'}.'" /><br />'."\n".
  879: 	'<input type="hidden" name="showgrading" value="'.$env{'form.showgrading'}.'" /><br />'."\n".
  880: 	'<input type="hidden" name="saveState"   value="'.$env{'form.saveState'}.'" />'."\n".
  881: 	'<input type="hidden" name="probTitle"   value="'.$env{'form.probTitle'}.'" />'."\n".
  882: 	'<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
  883: 	'<input type="hidden" name="saveStatusOld" value="'.$saveStatus.'" />'."\n";
  884: 
  885:     if (exists($env{'form.gradingMenu'}) && exists($env{'form.Status'})) {
  886: 	$gradeTable.='<input type="hidden" name="Status"   value="'.$stu_status.'" />'."\n";
  887:     } else {
  888: 	$gradeTable.=&mt('<b>Student Status:</b> [_1]',
  889: 			 &Apache::lonhtmlcommon::StatusOptions($saveStatus,undef,1,'javascript:reLoadList(this.form);')).'<br />';
  890:     }
  891: 
  892:     $gradeTable.=&mt('To '.lc($viewgrade)." 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.").'<br />'."\n".
  893: 	'<input type="hidden" name="command" value="processGroup" />'."\n";
  894: 
  895: # checkall buttons
  896:     $gradeTable.=&check_script('gradesub', 'stuinfo');
  897:     $gradeTable.='<input type="button" '."\n".
  898: 	'onClick="javascript:checkSelect(this.form.stuinfo);" '."\n".
  899: 	'value="'.&mt('Next').' &rarr;" /> <br />'."\n";
  900:     $gradeTable.=&check_buttons();
  901:     $gradeTable.='<label><input type="checkbox" name="checkPlag" checked="checked" />'.&mt('Check For Plagiarism').'</label>';
  902:     my ($classlist, undef, $fullname) = &getclasslist($getsec,'1',$getgroup);
  903:     $gradeTable.= &Apache::loncommon::start_data_table().
  904: 	&Apache::loncommon::start_data_table_header_row();
  905:     my $loop = 0;
  906:     while ($loop < 2) {
  907: 	$gradeTable.='<th>'.&mt('No.').'</th><th>'.&mt('Select').'</th>'.
  908: 	    '<th>'.&nameUserString('header').'&nbsp;'.&mt('Section/Group').'</th>';
  909: 	if ($env{'form.showgrading'} eq 'yes' 
  910: 	    && $submitonly ne 'queued'
  911: 	    && $submitonly ne 'all') {
  912: 	    foreach my $part (sort(@$partlist)) {
  913: 		my $display_part=
  914: 		    &get_display_part((split(/_/,$part))[0],$symb);
  915: 		$gradeTable.=
  916: 		    '<th>'.&mt('Part: [_1] Status',$display_part).'</th>';
  917: 	    }
  918: 	} elsif ($submitonly eq 'queued') {
  919: 	    $gradeTable.='<th>'.&mt('Queue Status').'&nbsp;</th>';
  920: 	}
  921: 	$loop++;
  922: #	$gradeTable.='<td></td>' if ($loop%2 ==1);
  923:     }
  924:     $gradeTable.=&Apache::loncommon::end_data_table_header_row()."\n";
  925: 
  926:     my $ctr = 0;
  927:     foreach my $student (sort 
  928: 			 {
  929: 			     if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
  930: 				 return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
  931: 			     }
  932: 			     return $a cmp $b;
  933: 			 }
  934: 			 (keys(%$fullname))) {
  935: 	my ($uname,$udom) = split(/:/,$student);
  936: 
  937: 	my %status = ();
  938: 
  939: 	if ($submitonly eq 'queued') {
  940: 	    my %queue_status = 
  941: 		&Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
  942: 							$udom,$uname);
  943: 	    next if (!defined($queue_status{'gradingqueue'}));
  944: 	    $status{'gradingqueue'} = $queue_status{'gradingqueue'};
  945: 	}
  946: 
  947: 	if ($env{'form.showgrading'} eq 'yes' 
  948: 	    && $submitonly ne 'queued'
  949: 	    && $submitonly ne 'all') {
  950: 	    (%status) =&student_gradeStatus($symb,$udom,$uname,$partlist);
  951: 	    my $submitted = 0;
  952: 	    my $graded = 0;
  953: 	    my $incorrect = 0;
  954: 	    foreach (keys(%status)) {
  955: 		$submitted = 1 if ($status{$_} ne 'nothing');
  956: 		$graded = 1 if ($status{$_} =~ /^ungraded/);
  957: 		$incorrect = 1 if ($status{$_} =~ /^incorrect/);
  958: 		
  959: 		my ($foo,$partid,$foo1) = split(/\./,$_);
  960: 		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
  961: 		    $submitted = 0;
  962: 		    my ($part)=split(/\./,$partid);
  963: 		    $gradeTable.='<input type="hidden" name="'.
  964: 			$student.':'.$part.':submitted_by" value="'.
  965: 			$status{'resource.'.$partid.'.submitted_by'}.'" />';
  966: 		}
  967: 	    }
  968: 	    
  969: 	    next if (!$submitted && ($submitonly eq 'yes' ||
  970: 				     $submitonly eq 'incorrect' ||
  971: 				     $submitonly eq 'graded'));
  972: 	    next if (!$graded && ($submitonly eq 'graded'));
  973: 	    next if (!$incorrect && $submitonly eq 'incorrect');
  974: 	}
  975: 
  976: 	$ctr++;
  977: 	my $section = $classlist->{$student}->[&Apache::loncoursedata::CL_SECTION()];
  978:         my $group = $classlist->{$student}->[&Apache::loncoursedata::CL_GROUP()];
  979: 	if ( $perm{'vgr'} eq 'F' ) {
  980: 	    if ($ctr%2 ==1) {
  981: 		$gradeTable.= &Apache::loncommon::start_data_table_row();
  982: 	    }
  983: 	    $gradeTable.='<td align="right">'.$ctr.'&nbsp;</td>'.
  984:                '<td align="center"><label><input type=checkbox name="stuinfo" value="'.
  985:                $student.':'.$$fullname{$student}.':::SECTION'.$section.
  986: 	       ')&nbsp;" />&nbsp;&nbsp;</label></td>'."\n".'<td>'.
  987: 	       &nameUserString(undef,$$fullname{$student},$uname,$udom).
  988: 	       '&nbsp;'.$section.($group ne '' ?'/'.$group:'').'</td>'."\n";
  989: 
  990: 	    if ($env{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
  991: 		foreach (sort(keys(%status))) {
  992: 		    next if ($_ =~ /^resource.*?submitted_by$/);
  993: 		    $gradeTable.='<td align="center">&nbsp;'.&mt($status{$_}).'&nbsp;</td>'."\n";
  994: 		}
  995: 	    }
  996: #	    $gradeTable.='<td></td>' if ($ctr%2 ==1);
  997: 	    if ($ctr%2 ==0) {
  998: 		$gradeTable.=&Apache::loncommon::end_data_table_row()."\n";
  999: 	    }
 1000: 	}
 1001:     }
 1002:     if ($ctr%2 ==1) {
 1003: 	$gradeTable.='<td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td>';
 1004: 	    if ($env{'form.showgrading'} eq 'yes' 
 1005: 		&& $submitonly ne 'queued'
 1006: 		&& $submitonly ne 'all') {
 1007: 		foreach (@$partlist) {
 1008: 		    $gradeTable.='<td>&nbsp;</td>';
 1009: 		}
 1010: 	    } elsif ($submitonly eq 'queued') {
 1011: 		$gradeTable.='<td>&nbsp;</td>';
 1012: 	    }
 1013: 	$gradeTable.=&Apache::loncommon::end_data_table_row();
 1014:     }
 1015: 
 1016:     $gradeTable.=&Apache::loncommon::end_data_table()."\n".
 1017: 	'<input type="button" '.
 1018: 	'onClick="javascript:checkSelect(this.form.stuinfo);" '.
 1019: 	'value="'.&mt('Next').' &rarr;" /></form>'."\n";
 1020:     if ($ctr == 0) {
 1021: 	my $num_students=(scalar(keys(%$fullname)));
 1022: 	if ($num_students eq 0) {
 1023: 	    $gradeTable='<br />&nbsp;<span class="LC_warning">'.&mt('There are no students currently enrolled.').'</span>';
 1024: 	} else {
 1025: 	    my $submissions='submissions';
 1026: 	    if ($submitonly eq 'incorrect') { $submissions = 'incorrect submissions'; }
 1027: 	    if ($submitonly eq 'graded'   ) { $submissions = 'ungraded submissions'; }
 1028: 	    if ($submitonly eq 'queued'   ) { $submissions = 'queued submissions'; }
 1029: 	    $gradeTable='<br />&nbsp;<span class="LC_warning">'.
 1030: 		&mt('No '.$submissions.' found for this resource for any students. ([_1] students checked for '.$submissions.')',
 1031: 		    $num_students).
 1032: 		'</span><br />';
 1033: 	}
 1034:     } elsif ($ctr == 1) {
 1035: 	$gradeTable =~ s/type="checkbox"/type="checkbox" checked="checked"/;
 1036:     }
 1037:     $gradeTable.=&show_grading_menu_form($symb);
 1038:     $request->print($gradeTable);
 1039:     return '';
 1040: }
 1041: 
 1042: #---- Called from the listStudents routine
 1043: 
 1044: sub check_script {
 1045:     my ($form, $type)=@_;
 1046:     my $chkallscript='<script type="text/javascript">
 1047:     function checkall() {
 1048:         for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
 1049:             ele = document.forms.'.$form.'.elements[i];
 1050:             if (ele.name == "'.$type.'") {
 1051:             document.forms.'.$form.'.elements[i].checked=true;
 1052:                                        }
 1053:         }
 1054:     }
 1055: 
 1056:     function checksec() {
 1057:         for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
 1058:             ele = document.forms.'.$form.'.elements[i];
 1059:            string = document.forms.'.$form.'.chksec.value;
 1060:            if
 1061:           (ele.value.indexOf(":::SECTION"+string)>0) {
 1062:               document.forms.'.$form.'.elements[i].checked=true;
 1063:             }
 1064:         }
 1065:     }
 1066: 
 1067: 
 1068:     function uncheckall() {
 1069:         for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
 1070:             ele = document.forms.'.$form.'.elements[i];
 1071:             if (ele.name == "'.$type.'") {
 1072:             document.forms.'.$form.'.elements[i].checked=false;
 1073:                                        }
 1074:         }
 1075:     }
 1076: 
 1077: </script>'."\n";
 1078:     return $chkallscript;
 1079: }
 1080: 
 1081: sub check_buttons {
 1082:     my $buttons.='<input type="button" onclick="checkall()" value="'.&mt('Check All').'" />';
 1083:     $buttons.='<input type="button" onclick="uncheckall()" value="'.&mt('Uncheck All').'" />&nbsp;';
 1084:     $buttons.='<input type="button" onclick="checksec()" value="'.&mt('Check Section/Group').'" />';
 1085:     $buttons.='<input type="text" size="5" name="chksec" />&nbsp;';
 1086:     return $buttons;
 1087: }
 1088: 
 1089: #     Displays the submissions for one student or a group of students
 1090: sub processGroup {
 1091:     my ($request)  = shift;
 1092:     my $ctr        = 0;
 1093:     my @stuchecked = &Apache::loncommon::get_env_multiple('form.stuinfo');
 1094:     my $total      = scalar(@stuchecked)-1;
 1095: 
 1096:     foreach my $student (@stuchecked) {
 1097: 	my ($uname,$udom,$fullname) = split(/:/,$student);
 1098: 	$env{'form.student'}        = $uname;
 1099: 	$env{'form.userdom'}        = $udom;
 1100: 	$env{'form.fullname'}       = $fullname;
 1101: 	&submission($request,$ctr,$total);
 1102: 	$ctr++;
 1103:     }
 1104:     return '';
 1105: }
 1106: 
 1107: #------------------------------------------------------------------------------------
 1108: #
 1109: #-------------------------- Next few routines handles grading by student, essentially
 1110: #                           handles essay response type problem/part
 1111: #
 1112: #--- Javascript to handle the submission page functionality ---
 1113: sub sub_page_js {
 1114:     my $request = shift;
 1115: 	    my $alertmsg = &mt('A number equal or greater than 0 is expected. Entered value = ');
 1116:     $request->print(<<SUBJAVASCRIPT);
 1117: <script type="text/javascript" language="javascript">
 1118:     function updateRadio(formname,id,weight) {
 1119: 	var gradeBox = formname["GD_BOX"+id];
 1120: 	var radioButton = formname["RADVAL"+id];
 1121: 	var oldpts = formname["oldpts"+id].value;
 1122: 	var pts = checkSolved(formname,id) == 'update' ? gradeBox.value : oldpts;
 1123: 	gradeBox.value = pts;
 1124: 	var resetbox = false;
 1125: 	if (isNaN(pts) || pts < 0) {
 1126: 	    alert("$alertmsg"+pts);
 1127: 	    for (var i=0; i<radioButton.length; i++) {
 1128: 		if (radioButton[i].checked) {
 1129: 		    gradeBox.value = i;
 1130: 		    resetbox = true;
 1131: 		}
 1132: 	    }
 1133: 	    if (!resetbox) {
 1134: 		formtextbox.value = "";
 1135: 	    }
 1136: 	    return;
 1137: 	}
 1138: 
 1139: 	if (pts > weight) {
 1140: 	    var resp = confirm("You entered a value ("+pts+
 1141: 			       ") greater than the weight for the part. Accept?");
 1142: 	    if (resp == false) {
 1143: 		gradeBox.value = oldpts;
 1144: 		return;
 1145: 	    }
 1146: 	}
 1147: 
 1148: 	for (var i=0; i<radioButton.length; i++) {
 1149: 	    radioButton[i].checked=false;
 1150: 	    if (pts == i && pts != "") {
 1151: 		radioButton[i].checked=true;
 1152: 	    }
 1153: 	}
 1154: 	updateSelect(formname,id);
 1155: 	formname["stores"+id].value = "0";
 1156:     }
 1157: 
 1158:     function writeBox(formname,id,pts) {
 1159: 	var gradeBox = formname["GD_BOX"+id];
 1160: 	if (checkSolved(formname,id) == 'update') {
 1161: 	    gradeBox.value = pts;
 1162: 	} else {
 1163: 	    var oldpts = formname["oldpts"+id].value;
 1164: 	    gradeBox.value = oldpts;
 1165: 	    var radioButton = formname["RADVAL"+id];
 1166: 	    for (var i=0; i<radioButton.length; i++) {
 1167: 		radioButton[i].checked=false;
 1168: 		if (i == oldpts) {
 1169: 		    radioButton[i].checked=true;
 1170: 		}
 1171: 	    }
 1172: 	}
 1173: 	formname["stores"+id].value = "0";
 1174: 	updateSelect(formname,id);
 1175: 	return;
 1176:     }
 1177: 
 1178:     function clearRadBox(formname,id) {
 1179: 	if (checkSolved(formname,id) == 'noupdate') {
 1180: 	    updateSelect(formname,id);
 1181: 	    return;
 1182: 	}
 1183: 	gradeSelect = formname["GD_SEL"+id];
 1184: 	for (var i=0; i<gradeSelect.length; i++) {
 1185: 	    if (gradeSelect[i].selected) {
 1186: 		var selectx=i;
 1187: 	    }
 1188: 	}
 1189: 	var stores = formname["stores"+id];
 1190: 	if (selectx == stores.value) { return };
 1191: 	var gradeBox = formname["GD_BOX"+id];
 1192: 	gradeBox.value = "";
 1193: 	var radioButton = formname["RADVAL"+id];
 1194: 	for (var i=0; i<radioButton.length; i++) {
 1195: 	    radioButton[i].checked=false;
 1196: 	}
 1197: 	stores.value = selectx;
 1198:     }
 1199: 
 1200:     function checkSolved(formname,id) {
 1201: 	if (formname["solved"+id].value == "correct_by_student" && formname.overRideScore.value == 'no') {
 1202: 	    var reply = confirm("This problem has been graded correct by the computer. Do you want to change the score?");
 1203: 	    if (!reply) {return "noupdate";}
 1204: 	    formname.overRideScore.value = 'yes';
 1205: 	}
 1206: 	return "update";
 1207:     }
 1208: 
 1209:     function updateSelect(formname,id) {
 1210: 	formname["GD_SEL"+id][0].selected = true;
 1211: 	return;
 1212:     }
 1213: 
 1214: //=========== Check that a point is assigned for all the parts  ============
 1215:     function checksubmit(formname,val,total,parttot) {
 1216: 	formname.gradeOpt.value = val;
 1217: 	if (val == "Save & Next") {
 1218: 	    for (i=0;i<=total;i++) {
 1219: 		for (j=0;j<parttot;j++) {
 1220: 		    var partid = formname["partid"+i+"_"+j].value;
 1221: 		    if (formname["GD_SEL"+i+"_"+partid][0].selected) {
 1222: 			var points = formname["GD_BOX"+i+"_"+partid].value;
 1223: 			if (points == "") {
 1224: 			    var name = formname["name"+i].value;
 1225: 			    var studentID = (name != '' ? name : formname["unamedom"+i].value);
 1226: 			    var resp = confirm("You did not assign a score for "+studentID+
 1227: 					       ", part "+partid+". Continue?");
 1228: 			    if (resp == false) {
 1229: 				formname["GD_BOX"+i+"_"+partid].focus();
 1230: 				return false;
 1231: 			    }
 1232: 			}
 1233: 		    }
 1234: 		    
 1235: 		}
 1236: 	    }
 1237: 	    
 1238: 	}
 1239: 	if (val == "Grade Student") {
 1240: 	    formname.showgrading.value = "yes";
 1241: 	    if (formname.Status.value == "") {
 1242: 		formname.Status.value = "Active";
 1243: 	    }
 1244: 	    formname.studentNo.value = total;
 1245: 	}
 1246: 	formname.submit();
 1247:     }
 1248: 
 1249: //======= Check that a score is assigned for all the problems (page/sequence grading only) =========
 1250:     function checkSubmitPage(formname,total) {
 1251: 	noscore = new Array(100);
 1252: 	var ptr = 0;
 1253: 	for (i=1;i<total;i++) {
 1254: 	    var partid = formname["q_"+i].value;
 1255: 	    if (formname["GD_SEL"+i+"_"+partid][0].selected) {
 1256: 		var points = formname["GD_BOX"+i+"_"+partid].value;
 1257: 		var status = formname["solved"+i+"_"+partid].value;
 1258: 		if (points == "" && status != "correct_by_student") {
 1259: 		    noscore[ptr] = i;
 1260: 		    ptr++;
 1261: 		}
 1262: 	    }
 1263: 	}
 1264: 	if (ptr != 0) {
 1265: 	    var sense = ptr == 1 ? ": " : "s: ";
 1266: 	    var prolist = "";
 1267: 	    if (ptr == 1) {
 1268: 		prolist = noscore[0];
 1269: 	    } else {
 1270: 		var i = 0;
 1271: 		while (i < ptr-1) {
 1272: 		    prolist += noscore[i]+", ";
 1273: 		    i++;
 1274: 		}
 1275: 		prolist += "and "+noscore[i];
 1276: 	    }
 1277: 	    var resp = confirm("You did not assign any score for the following problem"+sense+prolist+". Continue?");
 1278: 	    if (resp == false) {
 1279: 		return false;
 1280: 	    }
 1281: 	}
 1282: 
 1283: 	formname.submit();
 1284:     }
 1285: </script>
 1286: SUBJAVASCRIPT
 1287: }
 1288: 
 1289: #--- javascript for essay type problem --
 1290: sub sub_page_kw_js {
 1291:     my $request = shift;
 1292:     my $iconpath = $request->dir_config('lonIconsURL');
 1293:     &commonJSfunctions($request);
 1294: 
 1295:     my $inner_js_msg_central=<<INNERJS;
 1296:     <script text="text/javascript">
 1297:     function checkInput() {
 1298:       opener.document.SCORE.msgsub.value = opener.checkEntities(document.msgcenter.msgsub.value);
 1299:       var nmsg   = opener.document.SCORE.savemsgN.value;
 1300:       var usrctr = document.msgcenter.usrctr.value;
 1301:       var newval = opener.document.SCORE["newmsg"+usrctr];
 1302:       newval.value = opener.checkEntities(document.msgcenter.newmsg.value);
 1303: 
 1304:       var msgchk = "";
 1305:       if (document.msgcenter.subchk.checked) {
 1306:          msgchk = "msgsub,";
 1307:       }
 1308:       var includemsg = 0;
 1309:       for (var i=1; i<=nmsg; i++) {
 1310:           var opnmsg = opener.document.SCORE["savemsg"+i];
 1311:           var frmmsg = document.msgcenter["msg"+i];
 1312:           opnmsg.value = opener.checkEntities(frmmsg.value);
 1313:           var showflg = opener.document.SCORE["shownOnce"+i];
 1314:           showflg.value = "1";
 1315:           var chkbox = document.msgcenter["msgn"+i];
 1316:           if (chkbox.checked) {
 1317:              msgchk += "savemsg"+i+",";
 1318:              includemsg = 1;
 1319:           }
 1320:       }
 1321:       if (document.msgcenter.newmsgchk.checked) {
 1322:          msgchk += "newmsg"+usrctr;
 1323:          includemsg = 1;
 1324:       }
 1325:       imgformname = opener.document.SCORE["mailicon"+usrctr];
 1326:       imgformname.src = "$iconpath/"+((includemsg) ? "mailto.gif" : "mailbkgrd.gif");
 1327:       var includemsg = opener.document.SCORE["includemsg"+usrctr];
 1328:       includemsg.value = msgchk;
 1329: 
 1330:       self.close()
 1331: 
 1332:     }
 1333:     </script>
 1334: INNERJS
 1335: 
 1336:     my $inner_js_highlight_central=<<INNERJS;
 1337:  <script type="text/javascript">
 1338:     function updateChoice(flag) {
 1339:       opener.document.SCORE.kwclr.value = opener.radioSelection(document.hlCenter.kwdclr);
 1340:       opener.document.SCORE.kwsize.value = opener.radioSelection(document.hlCenter.kwdsize);
 1341:       opener.document.SCORE.kwstyle.value = opener.radioSelection(document.hlCenter.kwdstyle);
 1342:       opener.document.SCORE.refresh.value = "on";
 1343:       if (opener.document.SCORE.keywords.value!=""){
 1344:          opener.document.SCORE.submit();
 1345:       }
 1346:       self.close()
 1347:     }
 1348: </script>
 1349: INNERJS
 1350: 
 1351:     my $start_page_msg_central = 
 1352:         &Apache::loncommon::start_page('Message Central',$inner_js_msg_central,
 1353: 				       {'js_ready'  => 1,
 1354: 					'only_body' => 1,
 1355: 					'bgcolor'   =>'#FFFFFF',});
 1356:     my $end_page_msg_central = 
 1357: 	&Apache::loncommon::end_page({'js_ready' => 1});
 1358: 
 1359: 
 1360:     my $start_page_highlight_central = 
 1361:         &Apache::loncommon::start_page('Highlight Central',
 1362: 				       $inner_js_highlight_central,
 1363: 				       {'js_ready'  => 1,
 1364: 					'only_body' => 1,
 1365: 					'bgcolor'   =>'#FFFFFF',});
 1366:     my $end_page_highlight_central = 
 1367: 	&Apache::loncommon::end_page({'js_ready' => 1});
 1368: 
 1369:     my $docopen=&Apache::lonhtmlcommon::javascript_docopen();
 1370:     $docopen=~s/^document\.//;
 1371:     my $alertmsg = &mt('Please select a word or group of words from document and then click this link.');
 1372:     $request->print(<<SUBJAVASCRIPT);
 1373: <script type="text/javascript" language="javascript">
 1374: 
 1375: //===================== Show list of keywords ====================
 1376:   function keywords(formname) {
 1377:     var nret = prompt("Keywords list, separated by a space. Add/delete to list if desired.",formname.keywords.value);
 1378:     if (nret==null) return;
 1379:     formname.keywords.value = nret;
 1380: 
 1381:     if (formname.keywords.value != "") {
 1382: 	formname.refresh.value = "on";
 1383: 	formname.submit();
 1384:     }
 1385:     return;
 1386:   }
 1387: 
 1388: //===================== Script to view submitted by ==================
 1389:   function viewSubmitter(submitter) {
 1390:     document.SCORE.refresh.value = "on";
 1391:     document.SCORE.NCT.value = "1";
 1392:     document.SCORE.unamedom0.value = submitter;
 1393:     document.SCORE.submit();
 1394:     return;
 1395:   }
 1396: 
 1397: //===================== Script to add keyword(s) ==================
 1398:   function getSel() {
 1399:     if (document.getSelection) txt = document.getSelection();
 1400:     else if (document.selection) txt = document.selection.createRange().text;
 1401:     else return;
 1402:     var cleantxt = txt.replace(new RegExp('([\\f\\n\\r\\t\\v ])+', 'g')," ");
 1403:     if (cleantxt=="") {
 1404: 	alert("$alertmsg");
 1405: 	return;
 1406:     }
 1407:     var nret = prompt("Add selection to keyword list? Edit if desired.",cleantxt);
 1408:     if (nret==null) return;
 1409:     document.SCORE.keywords.value = document.SCORE.keywords.value+" "+nret;
 1410:     if (document.SCORE.keywords.value != "") {
 1411: 	document.SCORE.refresh.value = "on";
 1412: 	document.SCORE.submit();
 1413:     }
 1414:     return;
 1415:   }
 1416: 
 1417: //====================== Script for composing message ==============
 1418:    // preload images
 1419:    img1 = new Image();
 1420:    img1.src = "$iconpath/mailbkgrd.gif";
 1421:    img2 = new Image();
 1422:    img2.src = "$iconpath/mailto.gif";
 1423: 
 1424:   function msgCenter(msgform,usrctr,fullname) {
 1425:     var Nmsg  = msgform.savemsgN.value;
 1426:     savedMsgHeader(Nmsg,usrctr,fullname);
 1427:     var subject = msgform.msgsub.value;
 1428:     var msgchk = document.SCORE["includemsg"+usrctr].value;
 1429:     re = /msgsub/;
 1430:     var shwsel = "";
 1431:     if (re.test(msgchk)) { shwsel = "checked" }
 1432:     subject = (document.SCORE.shownSub.value == 0 ? checkEntities(subject) : subject);
 1433:     displaySubject(checkEntities(subject),shwsel);
 1434:     for (var i=1; i<=Nmsg; i++) {
 1435: 	var testmsg = "savemsg"+i+",";
 1436: 	re = new RegExp(testmsg,"g");
 1437: 	shwsel = "";
 1438: 	if (re.test(msgchk)) { shwsel = "checked" }
 1439: 	var message = document.SCORE["savemsg"+i].value;
 1440: 	message = (document.SCORE["shownOnce"+i].value == 0 ? checkEntities(message) : message);
 1441: 	displaySavedMsg(i,message,shwsel); //I do not get it. w/o checkEntities on saved messages,
 1442: 	                                   //any &lt; is already converted to <, etc. However, only once!!
 1443:     }
 1444:     newmsg = document.SCORE["newmsg"+usrctr].value;
 1445:     shwsel = "";
 1446:     re = /newmsg/;
 1447:     if (re.test(msgchk)) { shwsel = "checked" }
 1448:     newMsg(newmsg,shwsel);
 1449:     msgTail(); 
 1450:     return;
 1451:   }
 1452: 
 1453:   function checkEntities(strx) {
 1454:     if (strx.length == 0) return strx;
 1455:     var orgStr = ["&", "<", ">", '"']; 
 1456:     var newStr = ["&amp;", "&lt;", "&gt;", "&quot;"];
 1457:     var counter = 0;
 1458:     while (counter < 4) {
 1459: 	strx = strReplace(strx,orgStr[counter],newStr[counter]);
 1460: 	counter++;
 1461:     }
 1462:     return strx;
 1463:   }
 1464: 
 1465:   function strReplace(strx, orgStr, newStr) {
 1466:     return strx.split(orgStr).join(newStr);
 1467:   }
 1468: 
 1469:   function savedMsgHeader(Nmsg,usrctr,fullname) {
 1470:     var height = 70*Nmsg+250;
 1471:     var scrollbar = "no";
 1472:     if (height > 600) {
 1473: 	height = 600;
 1474: 	scrollbar = "yes";
 1475:     }
 1476:     var xpos = (screen.width-600)/2;
 1477:     xpos = (xpos < 0) ? '0' : xpos;
 1478:     var ypos = (screen.height-height)/2-30;
 1479:     ypos = (ypos < 0) ? '0' : ypos;
 1480: 
 1481:     pWin = window.open('', 'MessageCenter', 'resizable=yes,toolbar=no,location=no,scrollbars='+scrollbar+',screenx='+xpos+',screeny='+ypos+',width=600,height='+height);
 1482:     pWin.focus();
 1483:     pDoc = pWin.document;
 1484:     pDoc.$docopen;
 1485:     pDoc.write('$start_page_msg_central');
 1486: 
 1487:     pDoc.write("<form action=\\"inactive\\" name=\\"msgcenter\\">");
 1488:     pDoc.write("<input value=\\""+usrctr+"\\" name=\\"usrctr\\" type=\\"hidden\\">");
 1489:     pDoc.write("<h3><span class=\\"LC_info\\">&nbsp;Compose Message for \"+fullname+\"<\\/span><\\/h3><br /><br />");
 1490: 
 1491:     pDoc.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");
 1492:     pDoc.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");
 1493:     pDoc.write("<td><b>Type<\\/b><\\/td><td><b>Include<\\/b><\\/td><td><b>Message<\\/td><\\/tr>");
 1494: }
 1495:     function displaySubject(msg,shwsel) {
 1496:     pDoc = pWin.document;
 1497:     pDoc.write("<tr bgcolor=\\"#ffffdd\\">");
 1498:     pDoc.write("<td>Subject<\\/td>");
 1499:     pDoc.write("<td align=\\"center\\"><input name=\\"subchk\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
 1500:     pDoc.write("<td><input name=\\"msgsub\\" type=\\"text\\" value=\\""+msg+"\\"size=\\"60\\" maxlength=\\"80\\"><\\/td><\\/tr>");
 1501: }
 1502: 
 1503:   function displaySavedMsg(ctr,msg,shwsel) {
 1504:     pDoc = pWin.document;
 1505:     pDoc.write("<tr bgcolor=\\"#ffffdd\\">");
 1506:     pDoc.write("<td align=\\"center\\">"+ctr+"<\\/td>");
 1507:     pDoc.write("<td align=\\"center\\"><input name=\\"msgn"+ctr+"\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
 1508:     pDoc.write("<td><textarea name=\\"msg"+ctr+"\\" cols=\\"60\\" rows=\\"3\\">"+msg+"<\\/textarea><\\/td><\\/tr>");
 1509: }
 1510: 
 1511:   function newMsg(newmsg,shwsel) {
 1512:     pDoc = pWin.document;
 1513:     pDoc.write("<tr bgcolor=\\"#ffffdd\\">");
 1514:     pDoc.write("<td align=\\"center\\">New<\\/td>");
 1515:     pDoc.write("<td align=\\"center\\"><input name=\\"newmsgchk\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
 1516:     pDoc.write("<td><textarea name=\\"newmsg\\" cols=\\"60\\" rows=\\"3\\" onchange=\\"javascript:this.form.newmsgchk.checked=true\\" >"+newmsg+"<\\/textarea><\\/td><\\/tr>");
 1517: }
 1518: 
 1519:   function msgTail() {
 1520:     pDoc = pWin.document;
 1521:     pDoc.write("<\\/table>");
 1522:     pDoc.write("<\\/td><\\/tr><\\/table>&nbsp;");
 1523:     pDoc.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:checkInput()\\">&nbsp;&nbsp;");
 1524:     pDoc.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br /><br />");
 1525:     pDoc.write("<\\/form>");
 1526:     pDoc.write('$end_page_msg_central');
 1527:     pDoc.close();
 1528: }
 1529: 
 1530: //====================== Script for keyword highlight options ==============
 1531:   function kwhighlight() {
 1532:     var kwclr    = document.SCORE.kwclr.value;
 1533:     var kwsize   = document.SCORE.kwsize.value;
 1534:     var kwstyle  = document.SCORE.kwstyle.value;
 1535:     var redsel = "";
 1536:     var grnsel = "";
 1537:     var blusel = "";
 1538:     if (kwclr=="red")   {var redsel="checked"};
 1539:     if (kwclr=="green") {var grnsel="checked"};
 1540:     if (kwclr=="blue")  {var blusel="checked"};
 1541:     var sznsel = "";
 1542:     var sz1sel = "";
 1543:     var sz2sel = "";
 1544:     if (kwsize=="0")  {var sznsel="checked"};
 1545:     if (kwsize=="+1") {var sz1sel="checked"};
 1546:     if (kwsize=="+2") {var sz2sel="checked"};
 1547:     var synsel = "";
 1548:     var syisel = "";
 1549:     var sybsel = "";
 1550:     if (kwstyle=="")    {var synsel="checked"};
 1551:     if (kwstyle=="<i>") {var syisel="checked"};
 1552:     if (kwstyle=="<b>") {var sybsel="checked"};
 1553:     highlightCentral();
 1554:     highlightbody('red','red',redsel,'0','normal',sznsel,'','normal',synsel);
 1555:     highlightbody('green','green',grnsel,'+1','+1',sz1sel,'<i>','italic',syisel);
 1556:     highlightbody('blue','blue',blusel,'+2','+2',sz2sel,'<b>','bold',sybsel);
 1557:     highlightend();
 1558:     return;
 1559:   }
 1560: 
 1561:   function highlightCentral() {
 1562: //    if (window.hwdWin) window.hwdWin.close();
 1563:     var xpos = (screen.width-400)/2;
 1564:     xpos = (xpos < 0) ? '0' : xpos;
 1565:     var ypos = (screen.height-330)/2-30;
 1566:     ypos = (ypos < 0) ? '0' : ypos;
 1567: 
 1568:     hwdWin = window.open('', 'KeywordHighlightCentral', 'resizeable=yes,toolbar=no,location=no,scrollbars=no,width=400,height=300,screenx='+xpos+',screeny='+ypos);
 1569:     hwdWin.focus();
 1570:     var hDoc = hwdWin.document;
 1571:     hDoc.$docopen;
 1572:     hDoc.write('$start_page_highlight_central');
 1573:     hDoc.write("<form action=\\"inactive\\" name=\\"hlCenter\\">");
 1574:     hDoc.write("<h3><span class=\\"LC_info\\">&nbsp;Keyword Highlight Options<\\/span><\\/h3><br /><br />");
 1575: 
 1576:     hDoc.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");
 1577:     hDoc.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");
 1578:     hDoc.write("<td><b>Text Color<\\/b><\\/td><td><b>Font Size<\\/b><\\/td><td><b>Font Style<\\/td><\\/tr>");
 1579:   }
 1580: 
 1581:   function highlightbody(clrval,clrtxt,clrsel,szval,sztxt,szsel,syval,sytxt,sysel) { 
 1582:     var hDoc = hwdWin.document;
 1583:     hDoc.write("<tr bgcolor=\\"#ffffdd\\">");
 1584:     hDoc.write("<td align=\\"left\\">");
 1585:     hDoc.write("<input name=\\"kwdclr\\" type=\\"radio\\" value=\\""+clrval+"\\" "+clrsel+">&nbsp;"+clrtxt+"<\\/td>");
 1586:     hDoc.write("<td align=\\"left\\">");
 1587:     hDoc.write("<input name=\\"kwdsize\\" type=\\"radio\\" value=\\""+szval+"\\" "+szsel+">&nbsp;"+sztxt+"<\\/td>");
 1588:     hDoc.write("<td align=\\"left\\">");
 1589:     hDoc.write("<input name=\\"kwdstyle\\" type=\\"radio\\" value=\\""+syval+"\\" "+sysel+">&nbsp;"+sytxt+"<\\/td>");
 1590:     hDoc.write("<\\/tr>");
 1591:   }
 1592: 
 1593:   function highlightend() { 
 1594:     var hDoc = hwdWin.document;
 1595:     hDoc.write("<\\/table>");
 1596:     hDoc.write("<\\/td><\\/tr><\\/table>&nbsp;");
 1597:     hDoc.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:updateChoice(1)\\">&nbsp;&nbsp;");
 1598:     hDoc.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br /><br />");
 1599:     hDoc.write("<\\/form>");
 1600:     hDoc.write('$end_page_highlight_central');
 1601:     hDoc.close();
 1602:   }
 1603: 
 1604: </script>
 1605: SUBJAVASCRIPT
 1606: }
 1607: 
 1608: sub get_increment {
 1609:     my $increment = $env{'form.increment'};
 1610:     if ($increment != 1 && $increment != .5 && $increment != .25 &&
 1611:         $increment != .1) {
 1612:         $increment = 1;
 1613:     }
 1614:     return $increment;
 1615: }
 1616: 
 1617: #--- displays the grading box, used in essay type problem and grading by page/sequence
 1618: sub gradeBox {
 1619:     my ($request,$symb,$uname,$udom,$counter,$partid,$record) = @_;
 1620:     my $checkIcon = '<img alt="'.&mt('Check Mark').
 1621: 	'" src="'.&Apache::loncommon::lonhttpdurl($request->dir_config('lonIconsURL').'/check.gif').'" height="16" border="0" />';
 1622:     my $wgt    = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb,$udom,$uname);
 1623:     my $wgtmsg = ($wgt > 0) ? &mt('(problem weight)') 
 1624:                            : '<span class="LC_info">'.&mt('problem weight assigned by computer').'</span>';
 1625:     $wgt       = ($wgt > 0 ? $wgt : '1');
 1626:     my $score  = ($$record{'resource.'.$partid.'.awarded'} eq '' ?
 1627: 		  '' : &compute_points($$record{'resource.'.$partid.'.awarded'},$wgt));
 1628:     my $result='<input type="hidden" name="WGT'.$counter.'_'.$partid.'" value="'.$wgt.'" />'."\n";
 1629:     my $display_part= &get_display_part($partid,$symb);
 1630:     my %last_resets = &get_last_resets($symb,$env{'request.course.id'},
 1631: 				       [$partid]);
 1632:     my $aggtries = $$record{'resource.'.$partid.'.tries'};
 1633:     if ($last_resets{$partid}) {
 1634:         $aggtries = &get_num_tries($record,$last_resets{$partid},$partid);
 1635:     }
 1636:     $result.='<table border="0"><tr>';
 1637:     my $ctr = 0;
 1638:     my $thisweight = 0;
 1639:     my $increment = &get_increment();
 1640: 
 1641:     my $radio.='<table border="0"><tr>'."\n";  # display radio buttons in a nice table 10 across
 1642:     while ($thisweight<=$wgt) {
 1643: 	$radio.= '<td><span class="LC_nobreak"><label><input type="radio" name="RADVAL'.$counter.'_'.$partid.'" '.
 1644: 	    'onclick="javascript:writeBox(this.form,\''.$counter.'_'.$partid.'\','.
 1645: 	    $thisweight.')" value="'.$thisweight.'" '.
 1646: 	    ($score eq $thisweight ? 'checked="checked"':'').' /> '.$thisweight."</label></span></td>\n";
 1647: 	$radio.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
 1648:         $thisweight += $increment;
 1649: 	$ctr++;
 1650:     }
 1651:     $radio.='</tr></table>';
 1652: 
 1653:     my $line.='<input type="text" name="GD_BOX'.$counter.'_'.$partid.'"'.
 1654: 	($score ne ''? ' value = "'.$score.'"':'').' size="4" '.
 1655: 	'onChange="javascript:updateRadio(this.form,\''.$counter.'_'.$partid.'\','.
 1656: 	$wgt.')" /></td>'."\n";
 1657:     $line.='<td>/'.$wgt.' '.$wgtmsg.
 1658: 	($$record{'resource.'.$partid.'.solved'} eq 'correct_by_student' ? '&nbsp;'.$checkIcon : '').
 1659: 	' </td><td><b>'.&mt('Grade Status').':</b>'."\n";
 1660:     $line.='<select name="GD_SEL'.$counter.'_'.$partid.'" '.
 1661: 	'onChange="javascript:clearRadBox(this.form,\''.$counter.'_'.$partid.'\')" >'."\n";
 1662:     if ($$record{'resource.'.$partid.'.solved'} eq 'excused') {
 1663: 	$line.='<option></option>'.
 1664: 	    '<option value="excused" selected="selected">'.&mt('excused').'</option>';
 1665:     } else {
 1666: 	$line.='<option selected="selected"></option>'.
 1667: 	    '<option value="excused" >'.&mt('excused').'</option>';
 1668:     }
 1669:     $line.='<option value="reset status">'.&mt('reset status').'</option></select>'."\n";
 1670: 
 1671: 
 1672: 	#&mt('<td><b>Part:</b></td><td>[_1]</td><td><b>Points:</b></td><td>[_2]</td><td>or</td><td>[_3]</td>',$display_part,$radio,$line);
 1673:     $result .= 
 1674: 	    '<td><b>'.&mt('Part').':</b></td><td>'.$display_part.'</td><td><b>'.&mt('Points').':</b></td><td>'.$radio.'</td><td>'.&mt('or').'</td><td>'.$line.'</td>'.
 1675:     
 1676:     $result.='</tr></table>'."\n";
 1677:     $result.='<input type="hidden" name="stores'.$counter.'_'.$partid.'" value="" />'."\n".
 1678: 	'<input type="hidden" name="oldpts'.$counter.'_'.$partid.'" value="'.$score.'" />'."\n".
 1679: 	'<input type="hidden" name="solved'.$counter.'_'.$partid.'" value="'.
 1680: 	$$record{'resource.'.$partid.'.solved'}.'" />'."\n".
 1681:         '<input type="hidden" name="totaltries'.$counter.'_'.$partid.'" value="'.
 1682:         $$record{'resource.'.$partid.'.tries'}.'" />'."\n".
 1683:         '<input type="hidden" name="aggtries'.$counter.'_'.$partid.'" value="'.
 1684:         $aggtries.'" />'."\n";
 1685:     $result.=&handback_box($symb,$uname,$udom,$counter,$partid,$record);
 1686:     return $result;
 1687: }
 1688: 
 1689: sub handback_box {
 1690:     my ($symb,$uname,$udom,$counter,$partid,$record) = @_;
 1691:     my ($partlist,$handgrade,$responseType) = &response_type($symb);
 1692:     my (@respids);
 1693:      my @part_response_id = &flatten_responseType($responseType);
 1694:     foreach my $part_response_id (@part_response_id) {
 1695:     	my ($part,$resp) = @{ $part_response_id };
 1696:         if ($part eq $partid) {
 1697:             push(@respids,$resp);
 1698:         }
 1699:     }
 1700:     my $result;
 1701:     foreach my $respid (@respids) {
 1702: 	my $prefix = $counter.'_'.$partid.'_'.$respid.'_';
 1703: 	my $files=&get_submitted_files($udom,$uname,$partid,$respid,$record);
 1704: 	next if (!@$files);
 1705: 	my $file_counter = 1;
 1706: 	foreach my $file (@$files) {
 1707: 	    if ($file =~ /\/portfolio\//) {
 1708:     	        my ($file_path, $file_disp) = ($file =~ m|(.+/)(.+)$|);
 1709:     	        my ($name,$version,$ext) = &file_name_version_ext($file_disp);
 1710:     	        $file_disp = "$name.$ext";
 1711:     	        $file = $file_path.$file_disp;
 1712:     	        $result.=&mt('Return commented version of [_1] to student.',
 1713:     			 '<span class="LC_filename">'.$file_disp.'</span>');
 1714:     	        $result.='<input type="file"   name="'.$prefix.'returndoc'.$file_counter.'" />'."\n";
 1715:     	        $result.='<input type="hidden" name="'.$prefix.'origdoc'.$file_counter.'" value="'.$file.'" /><br />';
 1716:     	        $result.='('.&mt('File will be uploaded when you click on Save &amp; Next below.').')<br />';
 1717:     	        $file_counter++;
 1718: 	    }
 1719: 	}
 1720:     }
 1721:     return $result;    
 1722: }
 1723: 
 1724: sub show_problem {
 1725:     my ($request,$symb,$uname,$udom,$removeform,$viewon,$mode,$form) = @_;
 1726:     my $rendered;
 1727:     my %form = ((ref($form) eq 'HASH')? %{$form} : ());
 1728:     &Apache::lonxml::remember_problem_counter();
 1729:     if ($mode eq 'both' or $mode eq 'text') {
 1730: 	$rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
 1731: 						       $env{'request.course.id'},
 1732: 						       undef,\%form);
 1733:     }
 1734:     if ($removeform) {
 1735: 	$rendered=~s|<form(.*?)>||g;
 1736: 	$rendered=~s|</form>||g;
 1737: 	$rendered=~s|(<input[^>]*name\s*=\s*"?)(\w+)("?)|$1would_have_been_$2$3|g;
 1738:     }
 1739:     my $companswer;
 1740:     if ($mode eq 'both' or $mode eq 'answer') {
 1741: 	&Apache::lonxml::restore_problem_counter();
 1742: 	$companswer=
 1743: 	    &Apache::loncommon::get_student_answers($symb,$uname,$udom,
 1744: 						    $env{'request.course.id'},
 1745: 						    %form);
 1746:     }
 1747:     if ($removeform) {
 1748: 	$companswer=~s|<form(.*?)>||g;
 1749: 	$companswer=~s|</form>||g;
 1750: 	$companswer=~s|name="submit"|name="would_have_been_submit"|g;
 1751:     }
 1752:     $rendered=
 1753: 	'<div class="LC_grade_show_problem_header">'.
 1754: 	&mt('View of the problem').
 1755: 	'</div><div class="LC_grade_show_problem_problem">'.
 1756: 	$rendered.
 1757: 	'</div>';
 1758:     $companswer=
 1759: 	'<div class="LC_grade_show_problem_header">'.
 1760: 	&mt('Correct answer').
 1761: 	'</div><div class="LC_grade_show_problem_problem">'.
 1762: 	$companswer.
 1763: 	'</div>';
 1764:     my $result;
 1765:     if ($mode eq 'both') {
 1766: 	$result=$rendered.$companswer;
 1767:     } elsif ($mode eq 'text') {
 1768: 	$result=$rendered;
 1769:     } elsif ($mode eq 'answer') {
 1770: 	$result=$companswer;
 1771:     }
 1772:     $result='<div class="LC_grade_show_problem">'.$result.'</div>';
 1773:     return $result;
 1774: }
 1775: 
 1776: sub files_exist {
 1777:     my ($r, $symb) = @_;
 1778:     my @students = &Apache::loncommon::get_env_multiple('form.stuinfo');
 1779: 
 1780:     foreach my $student (@students) {
 1781:         my ($uname,$udom,$fullname) = split(/:/,$student);
 1782:         my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},
 1783: 					      $udom,$uname);
 1784:         my ($string,$timestamp)= &get_last_submission(\%record);
 1785:         foreach my $submission (@$string) {
 1786:             my ($partid,$respid) =
 1787: 		($submission =~ /^resource\.([^\.]*)\.([^\.]*)\.submission/);
 1788:             my $files=&get_submitted_files($udom,$uname,$partid,$respid,
 1789: 					   \%record);
 1790:             return 1 if (@$files);
 1791:         }
 1792:     }
 1793:     return 0;
 1794: }
 1795: 
 1796: sub download_all_link {
 1797:     my ($r,$symb) = @_;
 1798:     my $all_students = 
 1799: 	join("\n", &Apache::loncommon::get_env_multiple('form.stuinfo'));
 1800: 
 1801:     my $parts =
 1802: 	join("\n",&Apache::loncommon::get_env_multiple('form.vPart'));
 1803: 
 1804:     my $identifier = &Apache::loncommon::get_cgi_id();
 1805:     &Apache::lonnet::appenv({'cgi.'.$identifier.'.students' => $all_students,
 1806:                              'cgi.'.$identifier.'.symb' => $symb,
 1807:                              'cgi.'.$identifier.'.parts' => $parts,});
 1808:     $r->print('<a href="/cgi-bin/multidownload.pl?'.$identifier.'">'.
 1809: 	      &mt('Download All Submitted Documents').'</a>');
 1810:     return
 1811: }
 1812: 
 1813: sub build_section_inputs {
 1814:     my $section_inputs;
 1815:     if ($env{'form.section'} eq '') {
 1816:         $section_inputs .= '<input type="hidden" name="section" value="all" />'."\n";
 1817:     } else {
 1818:         my @sections = &Apache::loncommon::get_env_multiple('form.section');
 1819:         foreach my $section (@sections) {
 1820:             $section_inputs .= '<input type="hidden" name="section" value="'.$section.'" />'."\n";
 1821:         }
 1822:     }
 1823:     return $section_inputs;
 1824: }
 1825: 
 1826: # --------------------------- show submissions of a student, option to grade 
 1827: sub submission {
 1828:     my ($request,$counter,$total) = @_;
 1829:     my ($uname,$udom)     = ($env{'form.student'},$env{'form.userdom'});
 1830:     $udom = ($udom eq '' ? $env{'user.domain'} : $udom); #has form.userdom changed for a student?
 1831:     my $usec = &Apache::lonnet::getsection($udom,$uname,$env{'request.course.id'});
 1832:     $env{'form.fullname'} = &Apache::loncommon::plainname($uname,$udom,'lastname') if $env{'form.fullname'} eq '';
 1833:     my $symb = &get_symb($request); 
 1834:     if ($symb eq '') { $request->print("Unable to handle ambiguous references:."); return ''; }
 1835: 
 1836:     if (!&canview($usec)) {
 1837: 	$request->print('<span class="LC_warning">Unable to view requested student.('.
 1838: 			$uname.':'.$udom.' in section '.$usec.' in course id '.
 1839: 			$env{'request.course.id'}.')</span>');
 1840: 	$request->print(&show_grading_menu_form($symb));
 1841: 	return;
 1842:     }
 1843: 
 1844:     if (!$env{'form.lastSub'}) { $env{'form.lastSub'} = 'datesub'; }
 1845:     if (!$env{'form.vProb'}) { $env{'form.vProb'} = 'yes'; }
 1846:     if (!$env{'form.vAns'}) { $env{'form.vAns'} = 'yes'; }
 1847:     my $last = ($env{'form.lastSub'} eq 'last' ? 'last' : '');
 1848:     my $checkIcon = '<img alt="'.&mt('Check Mark').
 1849: 	'" src="'.$request->dir_config('lonIconsURL').
 1850: 	'/check.gif" height="16" border="0" />';
 1851: 
 1852:     my %old_essays;
 1853:     # header info
 1854:     if ($counter == 0) {
 1855: 	&sub_page_js($request);
 1856: 	&sub_page_kw_js($request) if ($env{'form.handgrade'} eq 'yes');
 1857: 	$env{'form.probTitle'} = $env{'form.probTitle'} eq '' ? 
 1858: 	    &Apache::lonnet::gettitle($symb) : $env{'form.probTitle'};
 1859: 	if ($env{'form.handgrade'} eq 'yes' && &files_exist($request, $symb)) {
 1860: 	    &download_all_link($request, $symb);
 1861: 	}
 1862: 	$request->print('<h3>&nbsp;<span class="LC_info">'.&mt('Submission Record').'</span></h3>'."\n".
 1863: 			'<h4>&nbsp;'.&mt('<b>Resource: </b> [_1]',$env{'form.probTitle'}).'</h4>'."\n");
 1864: 
 1865: 	# option to display problem, only once else it cause problems 
 1866:         # with the form later since the problem has a form.
 1867: 	if ($env{'form.vProb'} eq 'yes' or $env{'form.vAns'} eq 'yes') {
 1868: 	    my $mode;
 1869: 	    if ($env{'form.vProb'} eq 'yes' && $env{'form.vAns'} eq 'yes') {
 1870: 		$mode='both';
 1871: 	    } elsif ($env{'form.vProb'} eq 'yes') {
 1872: 		$mode='text';
 1873: 	    } elsif ($env{'form.vAns'} eq 'yes') {
 1874: 		$mode='answer';
 1875: 	    }
 1876: 	    &Apache::lonxml::clear_problem_counter();
 1877: 	    $request->print(&show_problem($request,$symb,$uname,$udom,0,1,$mode));
 1878: 	}
 1879: 
 1880: 	# kwclr is the only variable that is guaranteed to be non blank 
 1881:         # if this subroutine has been called once.
 1882: 	my %keyhash = ();
 1883: 	if ($env{'form.kwclr'} eq '' && $env{'form.handgrade'} eq 'yes') {
 1884: 	    %keyhash = &Apache::lonnet::dump('nohist_handgrade',
 1885: 					     $env{'course.'.$env{'request.course.id'}.'.domain'},
 1886: 					     $env{'course.'.$env{'request.course.id'}.'.num'});
 1887: 
 1888: 	    my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
 1889: 	    $env{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';
 1890: 	    $env{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';
 1891: 	    $env{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';
 1892: 	    $env{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
 1893: 	    $env{'form.msgsub'}   = $keyhash{$symb.'_subject'} ne '' ? 
 1894: 		$keyhash{$symb.'_subject'} : $env{'form.probTitle'};
 1895: 	    $env{'form.savemsgN'} = $keyhash{$symb.'_savemsgN'} ne '' ? $keyhash{$symb.'_savemsgN'} : '0';
 1896: 	}
 1897: 	my $overRideScore = $env{'form.overRideScore'} eq '' ? 'no' : $env{'form.overRideScore'};
 1898: 	my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
 1899: 	$request->print('<form action="/adm/grades" method="post" name="SCORE" enctype="multipart/form-data">'."\n".
 1900: 			'<input type="hidden" name="command"    value="handgrade" />'."\n".
 1901: 			'<input type="hidden" name="saveState"  value="'.$env{'form.saveState'}.'" />'."\n".
 1902: 			'<input type="hidden" name="Status"     value="'.$stu_status.'" />'."\n".
 1903: 			'<input type="hidden" name="overRideScore" value="'.$overRideScore.'" />'."\n".
 1904: 			'<input type="hidden" name="probTitle"  value="'.$env{'form.probTitle'}.'" />'."\n".
 1905: 			'<input type="hidden" name="refresh"    value="off" />'."\n".
 1906: 			'<input type="hidden" name="studentNo"  value="" />'."\n".
 1907: 			'<input type="hidden" name="gradeOpt"   value="" />'."\n".
 1908: 			'<input type="hidden" name="symb"       value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 1909: 			'<input type="hidden" name="showgrading" value="'.$env{'form.showgrading'}.'" />'."\n".
 1910: 			'<input type="hidden" name="vProb"      value="'.$env{'form.vProb'}.'" />'."\n".
 1911: 			'<input type="hidden" name="vAns"       value="'.$env{'form.vAns'}.'" />'."\n".
 1912: 			'<input type="hidden" name="lastSub"    value="'.$env{'form.lastSub'}.'" />'."\n".
 1913: 			&build_section_inputs().
 1914: 			'<input type="hidden" name="submitonly" value="'.$env{'form.submitonly'}.'" />'."\n".
 1915: 			'<input type="hidden" name="handgrade"  value="'.$env{'form.handgrade'}.'" />'."\n".
 1916: 			'<input type="hidden" name="NCT"'.
 1917: 			' value="'.($env{'form.NTSTU'} ne '' ? $env{'form.NTSTU'} : $total+1).'" />'."\n");
 1918: 	if ($env{'form.handgrade'} eq 'yes') {
 1919: 	    $request->print('<input type="hidden" name="keywords" value="'.$env{'form.keywords'}.'" />'."\n".
 1920: 			    '<input type="hidden" name="kwclr"    value="'.$env{'form.kwclr'}.'" />'."\n".
 1921: 			    '<input type="hidden" name="kwsize"   value="'.$env{'form.kwsize'}.'" />'."\n".
 1922: 			    '<input type="hidden" name="kwstyle"  value="'.$env{'form.kwstyle'}.'" />'."\n".
 1923: 			    '<input type="hidden" name="msgsub"   value="'.$env{'form.msgsub'}.'" />'."\n".
 1924: 			    '<input type="hidden" name="shownSub" value="0" />'."\n".
 1925: 			    '<input type="hidden" name="savemsgN" value="'.$env{'form.savemsgN'}.'" />'."\n");
 1926: 	    foreach my $partid (&Apache::loncommon::get_env_multiple('form.vPart')) {
 1927: 		$request->print('<input type="hidden" name="vPart" value="'.$partid.'" />'."\n");
 1928: 	    }
 1929: 	}
 1930: 	
 1931: 	my ($cts,$prnmsg) = (1,'');
 1932: 	while ($cts <= $env{'form.savemsgN'}) {
 1933: 	    $prnmsg.='<input type="hidden" name="savemsg'.$cts.'" value="'.
 1934: 		(!exists($keyhash{$symb.'_savemsg'.$cts}) ? 
 1935: 		 &Apache::lonfeedback::clear_out_html($env{'form.savemsg'.$cts}) :
 1936: 		 &Apache::lonfeedback::clear_out_html($keyhash{$symb.'_savemsg'.$cts})).
 1937: 		'" />'."\n".
 1938: 		'<input type="hidden" name="shownOnce'.$cts.'" value="0" />'."\n";
 1939: 	    $cts++;
 1940: 	}
 1941: 	$request->print($prnmsg);
 1942: 
 1943: 	if ($env{'form.handgrade'} eq 'yes' && $env{'form.showgrading'} eq 'yes') {
 1944: #
 1945: # Print out the keyword options line
 1946: #
 1947: 	    $request->print(<<KEYWORDS);
 1948: &nbsp;<b>Keyword Options:</b>&nbsp;
 1949: <a href="javascript:keywords(document.SCORE);" target="_self">List</a>&nbsp; &nbsp;
 1950: <a href="#" onMouseDown="javascript:getSel(); return false"
 1951:  CLASS="page">Paste Selection to List</a>&nbsp; &nbsp;
 1952: <a href="javascript:kwhighlight();" target="_self">Highlight Attribute</a><br /><br />
 1953: KEYWORDS
 1954: #
 1955: # Load the other essays for similarity check
 1956: #
 1957:             my (undef,undef,$essayurl) = &Apache::lonnet::decode_symb($symb);
 1958: 	    my ($adom,$aname,$apath)=($essayurl=~/^($LONCAPA::domain_re)\/($LONCAPA::username_re)\/(.*)$/);
 1959: 	    $apath=&escape($apath);
 1960: 	    $apath=~s/\W/\_/gs;
 1961: 	    %old_essays=&Apache::lonnet::dump('nohist_essay_'.$apath,$adom,$aname);
 1962:         }
 1963:     }
 1964: 
 1965: # This is where output for one specific student would start
 1966:     my $add_class = ($counter%2) ? 'LC_grade_show_user_odd_row' : '';
 1967:     $request->print("\n\n".
 1968:                     '<div class="LC_grade_show_user '.$add_class.'">'.
 1969: 		    '<div class="LC_grade_user_name">'.&nameUserString(undef,$env{'form.fullname'},$uname,$udom).'</div>'.
 1970: 		    '<div class="LC_grade_show_user_body">'."\n");
 1971: 
 1972:     if ($env{'form.vProb'} eq 'all' or $env{'form.vAns'} eq 'all') {
 1973: 	my $mode;
 1974: 	if ($env{'form.vProb'} eq 'all' && $env{'form.vAns'} eq 'all') {
 1975: 	    $mode='both';
 1976: 	} elsif ($env{'form.vProb'} eq 'all' ) {
 1977: 	    $mode='text';
 1978: 	} elsif ($env{'form.vAns'} eq 'all') {
 1979: 	    $mode='answer';
 1980: 	}
 1981: 	&Apache::lonxml::clear_problem_counter();
 1982: 	$request->print(&show_problem($request,$symb,$uname,$udom,1,1,$mode,{'request.prefix' => 'ctr'.$counter}));
 1983:     }
 1984: 
 1985:     my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
 1986:     my ($partlist,$handgrade,$responseType) = &response_type($symb);
 1987: 
 1988:     # Display student info
 1989:     $request->print(($counter == 0 ? '' : '<br />'));
 1990:     my $result='<div class="LC_grade_submissions">';
 1991:     
 1992:     $result.='<div class="LC_grade_submissions_header">';
 1993:     $result.= &mt('Submissions');
 1994:     $result.='<input type="hidden" name="name'.$counter.
 1995: 	'" value="'.$env{'form.fullname'}.'" />'."\n";
 1996:     if ($env{'form.handgrade'} eq 'no') {
 1997: 	$result.='<span class="LC_grade_check_note">'.
 1998: 	    &mt('Part(s) graded correct by the computer is marked with a [_1] symbol.',$checkIcon)."</span>\n";
 1999: 
 2000:     }
 2001: 
 2002: 
 2003: 
 2004:     # If any part of the problem is an essay-response (handgraded), then check for collaborators
 2005:     my $fullname;
 2006:     my $col_fullnames = [];
 2007:     if ($env{'form.handgrade'} eq 'yes') {
 2008: 	(my $sub_result,$fullname,$col_fullnames)=
 2009: 	    &check_collaborators($symb,$uname,$udom,\%record,$handgrade,
 2010: 				 $counter);
 2011: 	$result.=$sub_result;
 2012:     }
 2013:     $request->print($result."\n");
 2014:     $request->print('</div>'."\n");
 2015:     # print student answer/submission
 2016:     # Options are (1) Handgaded submission only
 2017:     #             (2) Last submission, includes submission that is not handgraded 
 2018:     #                  (for multi-response type part)
 2019:     #             (3) Last submission plus the parts info
 2020:     #             (4) The whole record for this student
 2021:     if ($env{'form.lastSub'} =~ /^(lastonly|hdgrade)$/) {
 2022: 	my ($string,$timestamp)= &get_last_submission(\%record);
 2023: 	
 2024: 	my $lastsubonly;
 2025: 
 2026: 	if ($$timestamp eq '') {
 2027: 	    $lastsubonly.='<div class="LC_grade_submissions_body">'.$$string[0].'</div>'; 
 2028: 	} else {
 2029: 	    $lastsubonly = '<div class="LC_grade_submissions_body"> <b>Date Submitted:</b> '.$$timestamp."\n";
 2030: 
 2031: 	    my %seenparts;
 2032: 	    my @part_response_id = &flatten_responseType($responseType);
 2033: 	    foreach my $part (@part_response_id) {
 2034: 		next if ($env{'form.lastSub'} eq 'hdgrade' 
 2035: 			 && $$handgrade{$$part[0].'_'.$$part[1]} ne 'yes');
 2036: 
 2037: 		my ($partid,$respid) = @{ $part };
 2038: 		my $display_part=&get_display_part($partid,$symb);
 2039: 		if ($env{"form.$uname:$udom:$partid:submitted_by"}) {
 2040: 		    if (exists($seenparts{$partid})) { next; }
 2041: 		    $seenparts{$partid}=1;
 2042: 		    my $submitby='<b>Part:</b> '.$display_part.
 2043: 			' <b>Collaborative submission by:</b> '.
 2044: 			'<a href="javascript:viewSubmitter(\''.
 2045: 			$env{"form.$uname:$udom:$partid:submitted_by"}.
 2046: 			'\');" target="_self">'.
 2047: 			$$fullname{$env{"form.$uname:$udom:$partid:submitted_by"}}.'</a><br />';
 2048: 		    $request->print($submitby);
 2049: 		    next;
 2050: 		}
 2051: 		my $responsetype = $responseType->{$partid}->{$respid};
 2052: 		if (!exists($record{"resource.$partid.$respid.submission"})) {
 2053: 		    $lastsubonly.="\n".'<div class="LC_grade_submission_part"><b>Part:</b> '.
 2054: 			$display_part.' <span class="LC_internal_info">( ID '.$respid.
 2055: 			' )</span>&nbsp; &nbsp;'.
 2056: 			'<span class="LC_warning">'.&mt('Nothing submitted - no attempts.').'</span><br /><br /></div>';
 2057: 		    next;
 2058: 		}
 2059: 		foreach my $submission (@$string) {
 2060: 		    my ($partid,$respid) = ($submission =~ /^resource\.([^\.]*)\.([^\.]*)\.submission/);
 2061: 		    if (join('_',@{$part}) ne ($partid.'_'.$respid)) { next; }
 2062: 		    my ($ressub,$subval) = split(/:/,$submission,2);
 2063: 		    # Similarity check
 2064: 		    my $similar='';
 2065: 		    if($env{'form.checkPlag'}){
 2066: 			my ($oname,$odom,$ocrsid,$oessay,$osim)=
 2067: 			    &most_similar($uname,$udom,$subval,\%old_essays);
 2068: 			if ($osim) {
 2069: 			    $osim=int($osim*100.0);
 2070: 			    my %old_course_desc = 
 2071: 				&Apache::lonnet::coursedescription($ocrsid,
 2072: 								   {'one_time' => 1});
 2073: 
 2074: 			    $similar="<hr /><h3><span class=\"LC_warning\">".
 2075: 				&mt('Essay is [_1]% similar to an essay by [_2] ([_3]:[_4]) in course [_5] (course id [_6]:[_7])',
 2076: 				    $osim,
 2077: 				    &Apache::loncommon::plainname($oname,$odom),
 2078: 				    $oname,$odom,
 2079: 				    $old_course_desc{'description'},
 2080: 				    $old_course_desc{'num'},
 2081: 				    $old_course_desc{'domain'}).
 2082: 				'</span></h3><blockquote><i>'.
 2083: 				&keywords_highlight($oessay).
 2084: 				'</i></blockquote><hr />';
 2085: 			}
 2086: 		    }
 2087: 		    my $order=&get_order($partid,$respid,$symb,$uname,$udom);
 2088: 		    if ($env{'form.lastSub'} eq 'lastonly' || 
 2089: 			($env{'form.lastSub'} eq 'hdgrade' && 
 2090: 			 $$handgrade{$$part[0].'_'.$$part[1]} eq 'yes')) {
 2091: 			my $display_part=&get_display_part($partid,$symb);
 2092: 			$lastsubonly.='<div class="LC_grade_submission_part"><b>Part:</b> '.
 2093: 			    $display_part.' <span class="LC_internal_info">( ID '.$respid.
 2094: 			    ' )</span>&nbsp; &nbsp;';
 2095: 			my $files=&get_submitted_files($udom,$uname,$partid,$respid,\%record);
 2096: 			if (@$files) {
 2097: 			    $lastsubonly.='<br /><span class="LC_warning">'.&mt('Like all files provided by users, this file may contain viruses').'</span><br />';
 2098: 			    my $file_counter = 0;
 2099: 			    foreach my $file (@$files) {
 2100: 			        $file_counter++;
 2101: 				&Apache::lonnet::allowuploaded('/adm/grades',$file);
 2102: 				$lastsubonly.='<br /><a href="'.$file.'?rawmode=1" target="lonGRDs"><img src="'.&Apache::loncommon::icon($file).'" border=0"> '.$file.'</a>';
 2103: 			    }
 2104: 			    $lastsubonly.='<br />';
 2105: 			}
 2106: 			$lastsubonly.='<b>'.&mt('Submitted Answer:').' </b>'.
 2107: 			    &cleanRecord($subval,$responsetype,$symb,$partid,
 2108: 					 $respid,\%record,$order);
 2109: 			if ($similar) {$lastsubonly.="<br /><br />$similar\n";}
 2110: 			$lastsubonly.='</div>';
 2111: 		    }
 2112: 		}
 2113: 	    }
 2114: 	    $lastsubonly.='</div>'."\n";
 2115: 	}
 2116: 	$request->print($lastsubonly);
 2117:    } elsif ($env{'form.lastSub'} eq 'datesub') {
 2118: 	my (undef,$responseType,undef,$parts) = &showResourceInfo($symb);
 2119: 	$request->print(&displaySubByDates($symb,\%record,$parts,$responseType,$checkIcon,$uname,$udom));
 2120:     } elsif ($env{'form.lastSub'} =~ /^(last|all)$/) {
 2121: 	$request->print(&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
 2122: 								 $env{'request.course.id'},
 2123: 								 $last,'.submission',
 2124: 								 'Apache::grades::keywords_highlight'));
 2125:     }
 2126: 
 2127:     $request->print('<input type="hidden" name="unamedom'.$counter.'" value="'.$uname.':'
 2128: 	.$udom.'" />'."\n");
 2129:     # return if view submission with no grading option
 2130:     if ($env{'form.showgrading'} eq '' || (!&canmodify($usec))) {
 2131: 	my $toGrade.='<input type="button" value="Grade Student" '.
 2132: 	    'onClick="javascript:checksubmit(this.form,\'Grade Student\',\''
 2133: 	    .$counter.'\');" target="_self" /> &nbsp;'."\n" if (&canmodify($usec));
 2134: 	$toGrade.='</div>'."\n";
 2135: 	if (($env{'form.command'} eq 'submission') || 
 2136: 	    ($env{'form.command'} eq 'processGroup' && $counter == $total)) {
 2137: 	    $toGrade.='</form>'.&show_grading_menu_form($symb); 
 2138: 	}
 2139: 	$request->print($toGrade);
 2140: 	return;
 2141:     } else {
 2142: 	$request->print('</div>'."\n");
 2143:     }
 2144: 
 2145:     # essay grading message center
 2146:     if ($env{'form.handgrade'} eq 'yes') {
 2147: 	my $result='<div class="LC_grade_message_center">';
 2148:     
 2149: 	$result.='<div class="LC_grade_message_center_header">'.
 2150: 	    &mt('Send Message').'</div><div class="LC_grade_message_center_body">';
 2151: 	my ($lastname,$givenn) = split(/,/,$env{'form.fullname'});
 2152: 	my $msgfor = $givenn.' '.$lastname;
 2153: 	if (scalar(@$col_fullnames) > 0) {
 2154: 	    my $lastone = pop(@$col_fullnames);
 2155: 	    $msgfor .= ', '.(join ', ',@$col_fullnames).' and '.$lastone.'.';
 2156: 	}
 2157: 	$msgfor =~ s/\'/\\'/g; #' stupid emacs - no! javascript
 2158: 	$result.='<input type="hidden" name="includemsg'.$counter.'" value="" />'."\n".
 2159: 	    '<input type="hidden" name="newmsg'.$counter.'" value="" />'."\n";
 2160: 	$result.='&nbsp;<a href="javascript:msgCenter(document.SCORE,'.$counter.
 2161: 	    ',\''.$msgfor.'\');" target="_self">'.
 2162: 	    &mt('Compose message to student').(scalar(@$col_fullnames) >= 1 ? 's' : '').'</a><label> ('.
 2163: 	    &mt('incl. grades').' <input type="checkbox" name="withgrades'.$counter.'" /></label>)'.
 2164: 	    '<img src="'.$request->dir_config('lonIconsURL').
 2165: 	    '/mailbkgrd.gif" width="14" height="10" name="mailicon'.$counter.'" />'."\n".
 2166: 	    '<br />&nbsp;('.
 2167: 	    &mt('Message will be sent when you click on Save &amp; Next below.').")\n";
 2168: 	$result.='</div></div>';
 2169: 	$request->print($result);
 2170:     }
 2171: 
 2172:     my %seen = ();
 2173:     my @partlist;
 2174:     my @gradePartRespid;
 2175:     my @part_response_id = &flatten_responseType($responseType);
 2176:     $request->print('<div class="LC_grade_assign">'.
 2177: 		    
 2178: 		    '<div class="LC_grade_assign_header">'.
 2179: 		    &mt('Assign Grades').'</div>'.
 2180: 		    '<div class="LC_grade_assign_body">');
 2181:     foreach my $part_response_id (@part_response_id) {
 2182:     	my ($partid,$respid) = @{ $part_response_id };
 2183: 	my $part_resp = join('_',@{ $part_response_id });
 2184: 	next if ($seen{$partid} > 0);
 2185: 	$seen{$partid}++;
 2186: 	next if ($$handgrade{$part_resp} ne 'yes' 
 2187: 		 && $env{'form.lastSub'} eq 'hdgrade');
 2188: 	push(@partlist,$partid);
 2189: 	push(@gradePartRespid,$partid.'.'.$respid);
 2190: 	$request->print(&gradeBox($request,$symb,$uname,$udom,$counter,$partid,\%record));
 2191:     }
 2192:     $request->print('</div></div>');
 2193: 
 2194:     $request->print('<div class="LC_grade_info_links">');
 2195:     if ($perm{'vgr'}) {
 2196: 	$request->print(
 2197: 	    &Apache::loncommon::track_student_link(&mt('View recent activity'),
 2198: 						   $uname,$udom,'check'));
 2199:     }
 2200:     if ($perm{'opa'}) {
 2201: 	$request->print(
 2202: 	    &Apache::loncommon::pprmlink(&mt('Set/Change parameters'),
 2203: 					 $uname,$udom,$symb,'check'));
 2204:     }
 2205:     $request->print('</div>');
 2206: 
 2207:     $result='<input type="hidden" name="partlist'.$counter.
 2208: 	'" value="'.(join ":",@partlist).'" />'."\n";
 2209:     $result.='<input type="hidden" name="gradePartRespid'.
 2210: 	'" value="'.(join ":",@gradePartRespid).'" />'."\n" if ($counter == 0);
 2211:     my $ctr = 0;
 2212:     while ($ctr < scalar(@partlist)) {
 2213: 	$result.='<input type="hidden" name="partid'.$counter.'_'.$ctr.'" value="'.
 2214: 	    $partlist[$ctr].'" />'."\n";
 2215: 	$ctr++;
 2216:     }
 2217:     $request->print($result.''."\n");
 2218: 
 2219: # Done with printing info for one student
 2220: 
 2221:     $request->print('</div>');#LC_grade_show_user_body
 2222:     $request->print('</div>');#LC_grade_show_user
 2223: 
 2224: 
 2225:     # print end of form
 2226:     if ($counter == $total) {
 2227: 	my $endform='<table border="0"><tr><td>'."\n";
 2228: 	$endform.='<input type="button" value="'.&mt('Save &amp; Next').'" '.
 2229: 	    'onClick="javascript:checksubmit(this.form,\'Save & Next\','.
 2230: 	    $total.','.scalar(@partlist).');" target="_self" /> &nbsp;'."\n";
 2231: 	my $ntstu ='<select name="NTSTU">'.
 2232: 	    '<option>1</option><option>2</option>'.
 2233: 	    '<option>3</option><option>5</option>'.
 2234: 	    '<option>7</option><option>10</option></select>'."\n";
 2235: 	my $nsel = ($env{'form.NTSTU'} ne '' ? $env{'form.NTSTU'} : '1');
 2236: 	$ntstu =~ s/<option>$nsel</<option selected="selected">$nsel</;
 2237: 	$endform.=&mt('[quant,_1,student]',$ntstu);
 2238: 	$endform.='&nbsp;&nbsp;<input type="button" value="'.&mt('Previous').'" '.
 2239: 	    'onClick="javascript:checksubmit(this.form,\'Previous\');" target="_self" /> &nbsp;'."\n".
 2240: 	    '<input type="button" value="'.&mt('Next').'" '.
 2241: 	    'onClick="javascript:checksubmit(this.form,\'Next\');" target="_self" /> &nbsp;';
 2242: 	$endform.=&mt('(Next and Previous (student) do not save the scores.)')."\n" ;
 2243:         $endform.="<input type='hidden' value='".&get_increment().
 2244:             "' name='increment' />";
 2245: 	$endform.='</td></tr></table></form>';
 2246: 	$endform.=&show_grading_menu_form($symb);
 2247: 	$request->print($endform);
 2248:     }
 2249:     return '';
 2250: }
 2251: 
 2252: sub check_collaborators {
 2253:     my ($symb,$uname,$udom,$record,$handgrade,$counter) = @_;
 2254:     my ($result,@col_fullnames);
 2255:     my ($classlist,undef,$fullname) = &getclasslist('all','0');
 2256:     foreach my $part (keys(%$handgrade)) {
 2257: 	my $ncol = &Apache::lonnet::EXT('resource.'.$part.
 2258: 					'.maxcollaborators',
 2259: 					$symb,$udom,$uname);
 2260: 	next if ($ncol <= 0);
 2261: 	$part =~ s/\_/\./g;
 2262: 	next if ($record->{'resource.'.$part.'.collaborators'} eq '');
 2263: 	my (@good_collaborators, @bad_collaborators);
 2264: 	foreach my $possible_collaborator
 2265: 	    (split(/,?\s+/,$record->{'resource.'.$part.'.collaborators'})) { 
 2266: 	    $possible_collaborator =~ s/[\$\^\(\)]//g;
 2267: 	    next if ($possible_collaborator eq '');
 2268: 	    my ($co_name,$co_dom) = split(/\@|:/,$possible_collaborator);
 2269: 	    $co_dom = $udom if (! defined($co_dom) || $co_dom =~ /^domain$/i);
 2270: 	    next if ($co_name eq $uname && $co_dom eq $udom);
 2271: 	    # Doing this grep allows 'fuzzy' specification
 2272: 	    my @matches = grep(/^\Q$co_name\E:\Q$co_dom\E$/i, 
 2273: 			       keys(%$classlist));
 2274: 	    if (! scalar(@matches)) {
 2275: 		push(@bad_collaborators, $possible_collaborator);
 2276: 	    } else {
 2277: 		push(@good_collaborators, @matches);
 2278: 	    }
 2279: 	}
 2280: 	if (scalar(@good_collaborators) != 0) {
 2281: 	    $result.='<br />'.&mt('Collaborators: ');
 2282: 	    foreach my $name (@good_collaborators) {
 2283: 		my ($lastname,$givenn) = split(/,/,$$fullname{$name});
 2284: 		push(@col_fullnames, $givenn.' '.$lastname);
 2285: 		$result.=$fullname->{$name}.'&nbsp; &nbsp; &nbsp;';
 2286: 	    }
 2287: 	    $result.='<br />'."\n";
 2288: 	    my ($part)=split(/\./,$part);
 2289: 	    $result.='<input type="hidden" name="collaborator'.$counter.
 2290: 		'" value="'.$part.':'.(join ':',@good_collaborators).'" />'.
 2291: 		"\n";
 2292: 	}
 2293: 	if (scalar(@bad_collaborators) > 0) {
 2294: 	    $result.='<div class="LC_warning">';
 2295: 	    $result.=&mt('This student has submitted [quant,_1,invalid collaborator]: [_2]',scalar(@bad_collaborators),join(', ',@bad_collaborators));
 2296: 	    $result .= '</div>';
 2297: 	}         
 2298: 	if (scalar(@bad_collaborators > $ncol)) {
 2299: 	    $result .= '<div class="LC_warning">';
 2300: 	    $result .= &mt('This student has submitted too many '.
 2301: 		'collaborators.  Maximum is [_1].',$ncol);
 2302: 	    $result .= '</div>';
 2303: 	}
 2304:     }
 2305:     return ($result,$fullname,\@col_fullnames);
 2306: }
 2307: 
 2308: #--- Retrieve the last submission for all the parts
 2309: sub get_last_submission {
 2310:     my ($returnhash)=@_;
 2311:     my (@string,$timestamp);
 2312:     if ($$returnhash{'version'}) {
 2313: 	my %lasthash=();
 2314: 	my ($version);
 2315: 	for ($version=1;$version<=$$returnhash{'version'};$version++) {
 2316: 	    foreach my $key (sort(split(/\:/,
 2317: 					$$returnhash{$version.':keys'}))) {
 2318: 		$lasthash{$key}=$$returnhash{$version.':'.$key};
 2319: 		$timestamp = 
 2320: 		    &Apache::lonlocal::locallocaltime($$returnhash{$version.':timestamp'});
 2321: 	    }
 2322: 	}
 2323: 	foreach my $key (keys(%lasthash)) {
 2324: 	    next if ($key !~ /\.submission$/);
 2325: 
 2326: 	    my ($partid,$foo) = split(/submission$/,$key);
 2327: 	    my $draft  = $lasthash{$partid.'awarddetail'} eq 'DRAFT' ?
 2328: 		'<span class="LC_warning">Draft Copy</span> ' : '';
 2329: 	    push(@string, join(':', $key, $draft.$lasthash{$key}));
 2330: 	}
 2331:     }
 2332:     if (!@string) {
 2333: 	$string[0] =
 2334: 	    '<span class="LC_warning">'.&mt('Nothing submitted - no attempts.').'</span>';
 2335:     }
 2336:     return (\@string,\$timestamp);
 2337: }
 2338: 
 2339: #--- High light keywords, with style choosen by user.
 2340: sub keywords_highlight {
 2341:     my $string    = shift;
 2342:     my $size      = $env{'form.kwsize'} eq '0' ? '' : 'size='.$env{'form.kwsize'};
 2343:     my $styleon   = $env{'form.kwstyle'} eq ''  ? '' : $env{'form.kwstyle'};
 2344:     (my $styleoff = $styleon) =~ s/\</\<\//;
 2345:     my @keylist   = split(/[,\s+]/,$env{'form.keywords'});
 2346:     foreach my $keyword (@keylist) {
 2347: 	$string =~ s/\b\Q$keyword\E(\b|\.)/<font color\=$env{'form.kwclr'} $size\>$styleon$keyword$styleoff<\/font>/gi;
 2348:     }
 2349:     return $string;
 2350: }
 2351: 
 2352: #--- Called from submission routine
 2353: sub processHandGrade {
 2354:     my ($request) = shift;
 2355:     my $symb   = &get_symb($request);
 2356:     my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
 2357:     my $button = $env{'form.gradeOpt'};
 2358:     my $ngrade = $env{'form.NCT'};
 2359:     my $ntstu  = $env{'form.NTSTU'};
 2360:     my $cdom   = $env{'course.'.$env{'request.course.id'}.'.domain'};
 2361:     my $cnum   = $env{'course.'.$env{'request.course.id'}.'.num'};
 2362: 
 2363:     if ($button eq 'Save & Next') {
 2364: 	my $ctr = 0;
 2365: 	while ($ctr < $ngrade) {
 2366: 	    my ($uname,$udom) = split(/:/,$env{'form.unamedom'.$ctr});
 2367: 	    my ($errorflag,$pts,$wgt) = &saveHandGrade($request,$symb,$uname,$udom,$ctr);
 2368: 	    if ($errorflag eq 'no_score') {
 2369: 		$ctr++;
 2370: 		next;
 2371: 	    }
 2372: 	    if ($errorflag eq 'not_allowed') {
 2373: 		$request->print("<span class=\"LC_warning\">Not allowed to modify grades for $uname:$udom</span>");
 2374: 		$ctr++;
 2375: 		next;
 2376: 	    }
 2377: 	    my $includemsg = $env{'form.includemsg'.$ctr};
 2378: 	    my ($subject,$message,$msgstatus) = ('','','');
 2379: 	    my $restitle = &Apache::lonnet::gettitle($symb);
 2380:             my ($feedurl,$showsymb) =
 2381: 		&get_feedurl_and_symb($symb,$uname,$udom);
 2382: 	    my $messagetail;
 2383: 	    if ($includemsg =~ /savemsg|newmsg\Q$ctr\E/) {
 2384: 		$subject = $env{'form.msgsub'} if ($includemsg =~ /msgsub/);
 2385: 		unless ($subject=~/\w/) { $subject=&mt('Grading Feedback'); }
 2386: 		$subject.=' ['.$restitle.']';
 2387: 		my (@msgnum) = split(/,/,$includemsg);
 2388: 		foreach (@msgnum) {
 2389: 		    $message.=$env{'form.'.$_} if ($_ =~ /savemsg|newmsg/ && $_ ne '');
 2390: 		}
 2391: 		$message =&Apache::lonfeedback::clear_out_html($message);
 2392: 		if ($env{'form.withgrades'.$ctr}) {
 2393: 		    $message.="\n\nPoint".($pts > 1 ? 's':'').' awarded = '.$pts.' out of '.$wgt;
 2394: 		    $messagetail = " for <a href=\"".
 2395: 		                   $feedurl."?symb=$showsymb\">$env{'form.probTitle'}</a>";
 2396: 		}
 2397: 		$msgstatus = 
 2398:                     &Apache::lonmsg::user_normal_msg($uname,$udom,$subject,
 2399: 						     $message.$messagetail,
 2400:                                                      undef,$feedurl,undef,
 2401:                                                      undef,undef,$showsymb,
 2402:                                                      $restitle);
 2403: 		$request->print('<br />'.&mt('Sending message to [_1]:[_2]',$uname,$udom).': '.
 2404: 				$msgstatus);
 2405: 	    }
 2406: 	    if ($env{'form.collaborator'.$ctr}) {
 2407: 		my @collabstrs=&Apache::loncommon::get_env_multiple("form.collaborator$ctr");
 2408: 		foreach my $collabstr (@collabstrs) {
 2409: 		    my ($part,@collaborators) = split(/:/,$collabstr);
 2410: 		    foreach my $collaborator (@collaborators) {
 2411: 			my ($errorflag,$pts,$wgt) = 
 2412: 			    &saveHandGrade($request,$symb,$collaborator,$udom,$ctr,
 2413: 					   $env{'form.unamedom'.$ctr},$part);
 2414: 			if ($errorflag eq 'not_allowed') {
 2415: 			    $request->print("<span class=\"LC_error\">".&mt('Not allowed to modify grades for [_1]',"$collaborator:$udom")."</span>");
 2416: 			    next;
 2417: 			} elsif ($message ne '') {
 2418: 			    my ($baseurl,$showsymb) = 
 2419: 				&get_feedurl_and_symb($symb,$collaborator,
 2420: 						      $udom);
 2421: 			    if ($env{'form.withgrades'.$ctr}) {
 2422: 				$messagetail = " for <a href=\"".
 2423:                                     $baseurl."?symb=$showsymb\">$env{'form.probTitle'}</a>";
 2424: 			    }
 2425: 			    $msgstatus = 
 2426: 				&Apache::lonmsg::user_normal_msg($collaborator,$udom,$subject,$message.$messagetail,undef,$baseurl,undef,undef,undef,$showsymb,$restitle);
 2427: 			}
 2428: 		    }
 2429: 		}
 2430: 	    }
 2431: 	    $ctr++;
 2432: 	}
 2433:     }
 2434: 
 2435:     if ($env{'form.handgrade'} eq 'yes') {
 2436: 	# Keywords sorted in alphabatical order
 2437: 	my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
 2438: 	my %keyhash = ();
 2439: 	$env{'form.keywords'}           =~ s/,\s{0,}|\s+/ /g;
 2440: 	$env{'form.keywords'}           =~ s/^\s+|\s+$//;
 2441: 	my (@keywords) = sort(split(/\s+/,$env{'form.keywords'}));
 2442: 	$env{'form.keywords'} = join(' ',@keywords);
 2443: 	$keyhash{$symb.'_keywords'}     = $env{'form.keywords'};
 2444: 	$keyhash{$symb.'_subject'}      = $env{'form.msgsub'};
 2445: 	$keyhash{$loginuser.'_kwclr'}   = $env{'form.kwclr'};
 2446: 	$keyhash{$loginuser.'_kwsize'}  = $env{'form.kwsize'};
 2447: 	$keyhash{$loginuser.'_kwstyle'} = $env{'form.kwstyle'};
 2448: 
 2449: 	# message center - Order of message gets changed. Blank line is eliminated.
 2450: 	# New messages are saved in env for the next student.
 2451: 	# All messages are saved in nohist_handgrade.db
 2452: 	my ($ctr,$idx) = (1,1);
 2453: 	while ($ctr <= $env{'form.savemsgN'}) {
 2454: 	    if ($env{'form.savemsg'.$ctr} ne '') {
 2455: 		$keyhash{$symb.'_savemsg'.$idx} = $env{'form.savemsg'.$ctr};
 2456: 		$idx++;
 2457: 	    }
 2458: 	    $ctr++;
 2459: 	}
 2460: 	$ctr = 0;
 2461: 	while ($ctr < $ngrade) {
 2462: 	    if ($env{'form.newmsg'.$ctr} ne '') {
 2463: 		$keyhash{$symb.'_savemsg'.$idx} = $env{'form.newmsg'.$ctr};
 2464: 		$env{'form.savemsg'.$idx} = $env{'form.newmsg'.$ctr};
 2465: 		$idx++;
 2466: 	    }
 2467: 	    $ctr++;
 2468: 	}
 2469: 	$env{'form.savemsgN'} = --$idx;
 2470: 	$keyhash{$symb.'_savemsgN'} = $env{'form.savemsgN'};
 2471: 	my $putresult = &Apache::lonnet::put
 2472: 	    ('nohist_handgrade',\%keyhash,$cdom,$cnum);
 2473:     }
 2474:     # Called by Save & Refresh from Highlight Attribute Window
 2475:     my (undef,undef,$fullname) = &getclasslist($env{'form.section'},'1');
 2476:     if ($env{'form.refresh'} eq 'on') {
 2477: 	my ($ctr,$total) = (0,0);
 2478: 	while ($ctr < $ngrade) {
 2479: 	    $total++ if  $env{'form.unamedom'.$ctr} ne '';
 2480: 	    $ctr++;
 2481: 	}
 2482: 	$env{'form.NTSTU'}=$ngrade;
 2483: 	$ctr = 0;
 2484: 	while ($ctr < $total) {
 2485: 	    my $processUser = $env{'form.unamedom'.$ctr};
 2486: 	    ($env{'form.student'},$env{'form.userdom'}) = split(/:/,$processUser);
 2487: 	    $env{'form.fullname'} = $$fullname{$processUser};
 2488: 	    &submission($request,$ctr,$total-1);
 2489: 	    $ctr++;
 2490: 	}
 2491: 	return '';
 2492:     }
 2493: 
 2494: # Go directly to grade student - from submission or link from chart page
 2495:     if ($button eq 'Grade Student') {
 2496: 	(undef,undef,$env{'form.handgrade'},undef,undef) = &showResourceInfo($symb);
 2497: 	my $processUser = $env{'form.unamedom'.$env{'form.studentNo'}};
 2498: 	($env{'form.student'},$env{'form.userdom'}) = split(/:/,$processUser);
 2499: 	$env{'form.fullname'} = $$fullname{$processUser};
 2500: 	&submission($request,0,0);
 2501: 	return '';
 2502:     }
 2503: 
 2504:     # Get the next/previous one or group of students
 2505:     my $firststu = $env{'form.unamedom0'};
 2506:     my $laststu = $env{'form.unamedom'.($ngrade-1)};
 2507:     my $ctr = 2;
 2508:     while ($laststu eq '') {
 2509: 	$laststu  = $env{'form.unamedom'.($ngrade-$ctr)};
 2510: 	$ctr++;
 2511: 	$laststu = $firststu if ($ctr > $ngrade);
 2512:     }
 2513: 
 2514:     my (@parsedlist,@nextlist);
 2515:     my ($nextflg) = 0;
 2516:     foreach my $item (sort 
 2517: 	     {
 2518: 		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
 2519: 		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
 2520: 		 }
 2521: 		 return $a cmp $b;
 2522: 	     } (keys(%$fullname))) {
 2523: 	if ($nextflg == 1 && $button =~ /Next$/) {
 2524: 	    push(@parsedlist,$item);
 2525: 	}
 2526: 	$nextflg = 1 if ($item eq $laststu);
 2527: 	if ($button eq 'Previous') {
 2528: 	    last if ($item eq $firststu);
 2529: 	    push(@parsedlist,$item);
 2530: 	}
 2531:     }
 2532:     $ctr = 0;
 2533:     @parsedlist = reverse @parsedlist if ($button eq 'Previous');
 2534:     my ($partlist) = &response_type($symb);
 2535:     foreach my $student (@parsedlist) {
 2536: 	my $submitonly=$env{'form.submitonly'};
 2537: 	my ($uname,$udom) = split(/:/,$student);
 2538: 	
 2539: 	if ($submitonly eq 'queued') {
 2540: 	    my %queue_status = 
 2541: 		&Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
 2542: 							$udom,$uname);
 2543: 	    next if (!defined($queue_status{'gradingqueue'}));
 2544: 	}
 2545: 
 2546: 	if ($submitonly =~ /^(yes|graded|incorrect)$/) {
 2547: #	    my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
 2548: 	    my %status=&student_gradeStatus($symb,$udom,$uname,$partlist);
 2549: 	    my $submitted = 0;
 2550: 	    my $ungraded = 0;
 2551: 	    my $incorrect = 0;
 2552: 	    foreach my $item (keys(%status)) {
 2553: 		$submitted = 1 if ($status{$item} ne 'nothing');
 2554: 		$ungraded = 1 if ($status{$item} =~ /^ungraded/);
 2555: 		$incorrect = 1 if ($status{$item} =~ /^incorrect/);
 2556: 		my ($foo,$partid,$foo1) = split(/\./,$item);
 2557: 		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
 2558: 		    $submitted = 0;
 2559: 		}
 2560: 	    }
 2561: 	    next if (!$submitted && ($submitonly eq 'yes' ||
 2562: 				     $submitonly eq 'incorrect' ||
 2563: 				     $submitonly eq 'graded'));
 2564: 	    next if (!$ungraded && ($submitonly eq 'graded'));
 2565: 	    next if (!$incorrect && $submitonly eq 'incorrect');
 2566: 	}
 2567: 	push(@nextlist,$student) if ($ctr < $ntstu);
 2568: 	last if ($ctr == $ntstu);
 2569: 	$ctr++;
 2570:     }
 2571: 
 2572:     $ctr = 0;
 2573:     my $total = scalar(@nextlist)-1;
 2574: 
 2575:     foreach (sort(@nextlist)) {
 2576: 	my ($uname,$udom,$submitter) = split(/:/);
 2577: 	$env{'form.student'}  = $uname;
 2578: 	$env{'form.userdom'}  = $udom;
 2579: 	$env{'form.fullname'} = $$fullname{$_};
 2580: 	&submission($request,$ctr,$total);
 2581: 	$ctr++;
 2582:     }
 2583:     if ($total < 0) {
 2584: 	my $the_end = '<h3><span class="LC_info">'.&mt('LON-CAPA User Message').'</span></h3><br />'."\n";
 2585: 	$the_end.=&mt('<b>Message: </b> No more students for this section or class.').'<br /><br />'."\n";
 2586: 	$the_end.=&mt('Click on the button below to return to the grading menu.').'<br /><br />'."\n";
 2587: 	$the_end.=&show_grading_menu_form($symb);
 2588: 	$request->print($the_end);
 2589:     }
 2590:     return '';
 2591: }
 2592: 
 2593: #---- Save the score and award for each student, if changed
 2594: sub saveHandGrade {
 2595:     my ($request,$symb,$stuname,$domain,$newflg,$submitter,$part) = @_;
 2596:     my @version_parts;
 2597:     my $usec = &Apache::lonnet::getsection($domain,$stuname,
 2598: 					   $env{'request.course.id'});
 2599:     if (!&canmodify($usec)) { return('not_allowed'); }
 2600:     my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$domain,$stuname);
 2601:     my @parts_graded;
 2602:     my %newrecord  = ();
 2603:     my ($pts,$wgt) = ('','');
 2604:     my %aggregate = ();
 2605:     my $aggregateflag = 0;
 2606:     my @parts = split(/:/,$env{'form.partlist'.$newflg});
 2607:     foreach my $new_part (@parts) {
 2608: 	#collaborator ($submi may vary for different parts
 2609: 	if ($submitter && $new_part ne $part) { next; }
 2610: 	my $dropMenu = $env{'form.GD_SEL'.$newflg.'_'.$new_part};
 2611: 	if ($dropMenu eq 'excused') {
 2612: 	    if ($record{'resource.'.$new_part.'.solved'} ne 'excused') {
 2613: 		$newrecord{'resource.'.$new_part.'.solved'} = 'excused';
 2614: 		if (exists($record{'resource.'.$new_part.'.awarded'})) {
 2615: 		    $newrecord{'resource.'.$new_part.'.awarded'} = '';
 2616: 		}
 2617: 	        $newrecord{'resource.'.$new_part.'.regrader'}="$env{'user.name'}:$env{'user.domain'}";
 2618: 	    }
 2619: 	} elsif ($dropMenu eq 'reset status'
 2620: 		 && exists($record{'resource.'.$new_part.'.solved'})) { #don't bother if no old records -> no attempts
 2621: 	    foreach my $key (keys(%record)) {
 2622: 		if ($key=~/^resource\.\Q$new_part\E\./) { $newrecord{$key} = ''; }
 2623: 	    }
 2624: 	    $newrecord{'resource.'.$new_part.'.regrader'}=
 2625: 		"$env{'user.name'}:$env{'user.domain'}";
 2626:             my $totaltries = $record{'resource.'.$part.'.tries'};
 2627: 
 2628:             my %last_resets = &get_last_resets($symb,$env{'request.course.id'},
 2629: 					       [$new_part]);
 2630:             my $aggtries =$totaltries;
 2631:             if ($last_resets{$new_part}) {
 2632:                 $aggtries = &get_num_tries(\%record,$last_resets{$new_part},
 2633: 					   $new_part);
 2634:             }
 2635: 
 2636:             my $solvedstatus = $record{'resource.'.$new_part.'.solved'};
 2637:             if ($aggtries > 0) {
 2638:                 &decrement_aggs($symb,$new_part,\%aggregate,$aggtries,$totaltries,$solvedstatus);
 2639:                 $aggregateflag = 1;
 2640:             }
 2641: 	} elsif ($dropMenu eq '') {
 2642: 	    $pts = ($env{'form.GD_BOX'.$newflg.'_'.$new_part} ne '' ? 
 2643: 		    $env{'form.GD_BOX'.$newflg.'_'.$new_part} : 
 2644: 		    $env{'form.RADVAL'.$newflg.'_'.$new_part});
 2645: 	    if ($pts eq '' && $env{'form.GD_SEL'.$newflg.'_'.$new_part} eq '') {
 2646: 		next;
 2647: 	    }
 2648: 	    $wgt = $env{'form.WGT'.$newflg.'_'.$new_part} eq '' ? 1 : 
 2649: 		$env{'form.WGT'.$newflg.'_'.$new_part};
 2650: 	    my $partial= $pts/$wgt;
 2651: 	    if ($partial eq $record{'resource.'.$new_part.'.awarded'}) {
 2652: 		#do not update score for part if not changed.
 2653:                 &handback_files($request,$symb,$stuname,$domain,$newflg,$new_part,\%newrecord);
 2654: 		next;
 2655: 	    } else {
 2656: 	        push(@parts_graded,$new_part);
 2657: 	    }
 2658: 	    if ($record{'resource.'.$new_part.'.awarded'} ne $partial) {
 2659: 		$newrecord{'resource.'.$new_part.'.awarded'}  = $partial;
 2660: 	    }
 2661: 	    my $reckey = 'resource.'.$new_part.'.solved';
 2662: 	    if ($partial == 0) {
 2663: 		if ($record{$reckey} ne 'incorrect_by_override') {
 2664: 		    $newrecord{$reckey} = 'incorrect_by_override';
 2665: 		}
 2666: 	    } else {
 2667: 		if ($record{$reckey} ne 'correct_by_override') {
 2668: 		    $newrecord{$reckey} = 'correct_by_override';
 2669: 		}
 2670: 	    }	    
 2671: 	    if ($submitter && 
 2672: 		($record{'resource.'.$new_part.'.submitted_by'} ne $submitter)) {
 2673: 		$newrecord{'resource.'.$new_part.'.submitted_by'} = $submitter;
 2674: 	    }
 2675: 	    $newrecord{'resource.'.$new_part.'.regrader'}=
 2676: 		"$env{'user.name'}:$env{'user.domain'}";
 2677: 	}
 2678: 	# unless problem has been graded, set flag to version the submitted files
 2679: 	unless ($record{'resource.'.$new_part.'.solved'} =~ /^correct_/  || 
 2680: 	        $record{'resource.'.$new_part.'.solved'} eq 'incorrect_by_override' ||
 2681: 	        $dropMenu eq 'reset status')
 2682: 	   {
 2683: 	    push(@version_parts,$new_part);
 2684: 	}
 2685:     }
 2686:     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 2687:     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 2688: 
 2689:     if (%newrecord) {
 2690:         if (@version_parts) {
 2691:             my @changed_keys = &version_portfiles(\%record, \@parts_graded, 
 2692:                                 $env{'request.course.id'}, $symb, $domain, $stuname, \@version_parts);
 2693: 	    @newrecord{@changed_keys} = @record{@changed_keys};
 2694: 	    foreach my $new_part (@version_parts) {
 2695: 		&handback_files($request,$symb,$stuname,$domain,$newflg,
 2696: 				$new_part,\%newrecord);
 2697: 	    }
 2698:         }
 2699: 	&Apache::lonnet::cstore(\%newrecord,$symb,
 2700: 				$env{'request.course.id'},$domain,$stuname);
 2701: 	&check_and_remove_from_queue(\@parts,\%record,\%newrecord,$symb,
 2702: 				     $cdom,$cnum,$domain,$stuname);
 2703:     }
 2704:     if ($aggregateflag) {
 2705:         &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
 2706: 			      $cdom,$cnum);
 2707:     }
 2708:     return ('',$pts,$wgt);
 2709: }
 2710: 
 2711: sub check_and_remove_from_queue {
 2712:     my ($parts,$record,$newrecord,$symb,$cdom,$cnum,$domain,$stuname) = @_;
 2713:     my @ungraded_parts;
 2714:     foreach my $part (@{$parts}) {
 2715: 	if (    $record->{   'resource.'.$part.'.awarded'} eq ''
 2716: 	     && $record->{   'resource.'.$part.'.solved' } ne 'excused'
 2717: 	     && $newrecord->{'resource.'.$part.'.awarded'} eq ''
 2718: 	     && $newrecord->{'resource.'.$part.'.solved' } ne 'excused'
 2719: 		) {
 2720: 	    push(@ungraded_parts, $part);
 2721: 	}
 2722:     }
 2723:     if ( !@ungraded_parts ) {
 2724: 	&Apache::bridgetask::remove_from_queue('gradingqueue',$symb,$cdom,
 2725: 					       $cnum,$domain,$stuname);
 2726:     }
 2727: }
 2728: 
 2729: sub handback_files {
 2730:     my ($request,$symb,$stuname,$domain,$newflg,$new_part,$newrecord) = @_;
 2731:     my $portfolio_root = '/userfiles/portfolio';
 2732:     my ($partlist,$handgrade,$responseType) = &response_type($symb);
 2733: 
 2734:     my @part_response_id = &flatten_responseType($responseType);
 2735:     foreach my $part_response_id (@part_response_id) {
 2736:     	my ($part_id,$resp_id) = @{ $part_response_id };
 2737: 	my $part_resp = join('_',@{ $part_response_id });
 2738:             if (($env{'form.'.$newflg.'_'.$part_resp.'_returndoc1'}) && ($new_part == $part_id)) {
 2739:                 # if multiple files are uploaded names will be 'returndoc2','returndoc3'
 2740:                 my $file_counter = 1;
 2741: 		my $file_msg;
 2742:                 while ($env{'form.'.$newflg.'_'.$part_resp.'_returndoc'.$file_counter}) {
 2743:                     my $fname=$env{'form.'.$newflg.'_'.$part_resp.'_returndoc'.$file_counter.'.filename'};
 2744:                     my ($directory,$answer_file) = 
 2745:                         ($env{'form.'.$newflg.'_'.$part_resp.'_origdoc'.$file_counter} =~ /^(.*?)([^\/]*)$/);
 2746:                     my ($answer_name,$answer_ver,$answer_ext) =
 2747: 		        &file_name_version_ext($answer_file);
 2748: 		    my ($portfolio_path) = ($directory =~ /^.+$stuname\/portfolio(.*)/);
 2749:                     my $getpropath = 1;
 2750: 		    my @dir_list = &Apache::lonnet::dirlist($portfolio_root.$portfolio_path,$domain,$stuname,$getpropath);
 2751: 		    my $version = &get_next_version($answer_name, $answer_ext, \@dir_list);
 2752:                     # fix file name
 2753:                     my ($save_file_name) = (($directory.$answer_name.".$version.".$answer_ext) =~ /^.+\/${stuname}\/(.*)/);
 2754:                     my $result=&Apache::lonnet::finishuserfileupload($stuname,$domain,
 2755:             	                                $newflg.'_'.$part_resp.'_returndoc'.$file_counter,
 2756:             	                                $save_file_name);
 2757:                     if ($result !~ m|^/uploaded/|) {
 2758:                         $request->print('<br /><span class="LC_error">'.
 2759:                             &mt('An error occurred ([_1]) while trying to upload [_2].',
 2760:                                 $result,$newflg.'_'.$part_resp.'_returndoc'.$file_counter).
 2761:                                         '</span>');
 2762:                     } else {
 2763:                         # mark the file as read only
 2764:                         my @files = ($save_file_name);
 2765:                         my @what = ($symb,$env{'request.course.id'},'handback');
 2766:                         &Apache::lonnet::mark_as_readonly($domain,$stuname,\@files,\@what);
 2767: 			if (exists($$newrecord{"resource.$new_part.$resp_id.handback"})) {
 2768: 			    $$newrecord{"resource.$new_part.$resp_id.handback"}.=',';
 2769: 			}
 2770:                         $$newrecord{"resource.$new_part.$resp_id.handback"} .= $save_file_name;
 2771: 			$file_msg.= "\n".'<br /><span class="LC_filename"><a href="/uploaded/'."$domain/$stuname/".$save_file_name.'">'.$save_file_name."</a></span><br />";
 2772: 
 2773:                     }
 2774:                     $request->print("<br />".$fname." will be the uploaded file name");
 2775:                     $request->print(" ".$env{'form.'.$newflg.'_'.$part_resp.'_origdoc'.$file_counter});
 2776:                     $file_counter++;
 2777:                 }
 2778: 		my $subject = "File Handed Back by Instructor ";
 2779: 		my $message = "A file has been returned that was originally submitted in reponse to: <br />";
 2780: 		$message .= "<strong>".&Apache::lonnet::gettitle($symb)."</strong><br />";
 2781: 		$message .= ' The returned file(s) are named: '. $file_msg;
 2782: 		$message .= " and can be found in your portfolio space.";
 2783: 		my ($feedurl,$showsymb) = 
 2784: 		    &get_feedurl_and_symb($symb,$domain,$stuname);
 2785:                 my $restitle = &Apache::lonnet::gettitle($symb);
 2786: 		my $msgstatus = 
 2787:                    &Apache::lonmsg::user_normal_msg($stuname,$domain,$subject.
 2788: 			 ' (File Returned) ['.$restitle.']',$message,undef,
 2789:                          $feedurl,undef,undef,undef,$showsymb,$restitle);
 2790:             }
 2791:         }
 2792:     return;
 2793: }
 2794: 
 2795: sub get_feedurl_and_symb {
 2796:     my ($symb,$uname,$udom) = @_;
 2797:     my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
 2798:     $url = &Apache::lonnet::clutter($url);
 2799:     my $encrypturl=&Apache::lonnet::EXT('resource.0.encrypturl',
 2800: 					$symb,$udom,$uname);
 2801:     if ($encrypturl =~ /^yes$/i) {
 2802: 	&Apache::lonenc::encrypted(\$url,1);
 2803: 	&Apache::lonenc::encrypted(\$symb,1);
 2804:     }
 2805:     return ($url,$symb);
 2806: }
 2807: 
 2808: sub get_submitted_files {
 2809:     my ($udom,$uname,$partid,$respid,$record) = @_;
 2810:     my @files;
 2811:     if ($$record{"resource.$partid.$respid.portfiles"}) {
 2812:         my $file_url = '/uploaded/'.$udom.'/'.$uname.'/portfolio';
 2813:         foreach my $file (split(',',$$record{"resource.$partid.$respid.portfiles"})) {
 2814:     	    push(@files,$file_url.$file);
 2815:         }
 2816:     }
 2817:     if ($$record{"resource.$partid.$respid.uploadedurl"}) {
 2818:         push(@files,$$record{"resource.$partid.$respid.uploadedurl"});
 2819:     }
 2820:     return (\@files);
 2821: }
 2822: 
 2823: # ----------- Provides number of tries since last reset.
 2824: sub get_num_tries {
 2825:     my ($record,$last_reset,$part) = @_;
 2826:     my $timestamp = '';
 2827:     my $num_tries = 0;
 2828:     if ($$record{'version'}) {
 2829:         for (my $version=$$record{'version'};$version>=1;$version--) {
 2830:             if (exists($$record{$version.':resource.'.$part.'.solved'})) {
 2831:                 $timestamp = $$record{$version.':timestamp'};
 2832:                 if ($timestamp > $last_reset) {
 2833:                     $num_tries ++;
 2834:                 } else {
 2835:                     last;
 2836:                 }
 2837:             }
 2838:         }
 2839:     }
 2840:     return $num_tries;
 2841: }
 2842: 
 2843: # ----------- Determine decrements required in aggregate totals 
 2844: sub decrement_aggs {
 2845:     my ($symb,$part,$aggregate,$aggtries,$totaltries,$solvedstatus) = @_;
 2846:     my %decrement = (
 2847:                         attempts => 0,
 2848:                         users => 0,
 2849:                         correct => 0
 2850:                     );
 2851:     $decrement{'attempts'} = $aggtries;
 2852:     if ($solvedstatus =~ /^correct/) {
 2853:         $decrement{'correct'} = 1;
 2854:     }
 2855:     if ($aggtries == $totaltries) {
 2856:         $decrement{'users'} = 1;
 2857:     }
 2858:     foreach my $type (keys(%decrement)) {
 2859:         $$aggregate{$symb."\0".$part."\0".$type} = -$decrement{$type};
 2860:     }
 2861:     return;
 2862: }
 2863: 
 2864: # ----------- Determine timestamps for last reset of aggregate totals for parts  
 2865: sub get_last_resets {
 2866:     my ($symb,$courseid,$partids) =@_;
 2867:     my %last_resets;
 2868:     my $cdom = $env{'course.'.$courseid.'.domain'};
 2869:     my $cname = $env{'course.'.$courseid.'.num'};
 2870:     my @keys;
 2871:     foreach my $part (@{$partids}) {
 2872: 	push(@keys,"$symb\0$part\0resettime");
 2873:     }
 2874:     my %results=&Apache::lonnet::get('nohist_resourcetracker',\@keys,
 2875: 				     $cdom,$cname);
 2876:     foreach my $part (@{$partids}) {
 2877: 	$last_resets{$part}=$results{"$symb\0$part\0resettime"};
 2878:     }
 2879:     return %last_resets;
 2880: }
 2881: 
 2882: # ----------- Handles creating versions for portfolio files as answers
 2883: sub version_portfiles {
 2884:     my ($record, $parts_graded, $courseid, $symb, $domain, $stu_name, $v_flag) = @_;
 2885:     my $version_parts = join('|',@$v_flag);
 2886:     my @returned_keys;
 2887:     my $parts = join('|', @$parts_graded);
 2888:     my $portfolio_root = '/userfiles/portfolio';
 2889:     foreach my $key (keys(%$record)) {
 2890:         my $new_portfiles;
 2891:         if ($key =~ /^resource\.($version_parts)\./ && $key =~ /\.portfiles$/ ) {
 2892:             my @versioned_portfiles;
 2893:             my @portfiles = split(/\s*,\s*/,$$record{$key});
 2894:             foreach my $file (@portfiles) {
 2895:                 &Apache::lonnet::unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
 2896:                 my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
 2897: 		my ($answer_name,$answer_ver,$answer_ext) =
 2898: 		    &file_name_version_ext($answer_file);
 2899:                 my $getpropath = 1;    
 2900:                 my @dir_list = &Apache::lonnet::dirlist($portfolio_root.$directory,$domain,$stu_name,$getpropath);
 2901:                 my $version = &get_next_version($answer_name, $answer_ext, \@dir_list);
 2902:                 my $new_answer = &version_selected_portfile($domain, $stu_name, $directory, $answer_file, $version);
 2903:                 if ($new_answer ne 'problem getting file') {
 2904:                     push(@versioned_portfiles, $directory.$new_answer);
 2905:                     &Apache::lonnet::mark_as_readonly($domain,$stu_name,
 2906:                         [$directory.$new_answer],
 2907:                         [$symb,$env{'request.course.id'},'graded']);
 2908:                 }
 2909:             }
 2910:             $$record{$key} = join(',',@versioned_portfiles);
 2911:             push(@returned_keys,$key);
 2912:         }
 2913:     } 
 2914:     return (@returned_keys);   
 2915: }
 2916: 
 2917: sub get_next_version {
 2918:     my ($answer_name, $answer_ext, $dir_list) = @_;
 2919:     my $version;
 2920:     foreach my $row (@$dir_list) {
 2921:         my ($file) = split(/\&/,$row,2);
 2922:         my ($file_name,$file_version,$file_ext) =
 2923: 	    &file_name_version_ext($file);
 2924:         if (($file_name eq $answer_name) && 
 2925: 	    ($file_ext eq $answer_ext)) {
 2926:                 # gets here if filename and extension match, regardless of version
 2927:                 if ($file_version ne '') {
 2928:                 # a versioned file is found  so save it for later
 2929:                 if ($file_version > $version) {
 2930: 		    $version = $file_version;
 2931: 	        }
 2932:             }
 2933:         }
 2934:     } 
 2935:     $version ++;
 2936:     return($version);
 2937: }
 2938: 
 2939: sub version_selected_portfile {
 2940:     my ($domain,$stu_name,$directory,$file_name,$version) = @_;
 2941:     my ($answer_name,$answer_ver,$answer_ext) =
 2942:         &file_name_version_ext($file_name);
 2943:     my $new_answer;
 2944:     $env{'form.copy'} = &Apache::lonnet::getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
 2945:     if($env{'form.copy'} eq '-1') {
 2946:         $new_answer = 'problem getting file';
 2947:     } else {
 2948:         $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
 2949:         my $copy_result = &Apache::lonnet::finishuserfileupload(
 2950:                             $stu_name,$domain,'copy',
 2951: 		        '/portfolio'.$directory.$new_answer);
 2952:     }    
 2953:     return ($new_answer);
 2954: }
 2955: 
 2956: sub file_name_version_ext {
 2957:     my ($file)=@_;
 2958:     my @file_parts = split(/\./, $file);
 2959:     my ($name,$version,$ext);
 2960:     if (@file_parts > 1) {
 2961: 	$ext=pop(@file_parts);
 2962: 	if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
 2963: 	    $version=pop(@file_parts);
 2964: 	}
 2965: 	$name=join('.',@file_parts);
 2966:     } else {
 2967: 	$name=join('.',@file_parts);
 2968:     }
 2969:     return($name,$version,$ext);
 2970: }
 2971: 
 2972: #--------------------------------------------------------------------------------------
 2973: #
 2974: #-------------------------- Next few routines handles grading by section or whole class
 2975: #
 2976: #--- Javascript to handle grading by section or whole class
 2977: sub viewgrades_js {
 2978:     my ($request) = shift;
 2979: 
 2980:     my $alertmsg = &mt('A number equal or greater than 0 is expected. Entered value = ');
 2981:     $request->print(<<VIEWJAVASCRIPT);
 2982: <script type="text/javascript" language="javascript">
 2983:    function writePoint(partid,weight,point) {
 2984: 	var radioButton = document.classgrade["RADVAL_"+partid];
 2985: 	var textbox = document.classgrade["TEXTVAL_"+partid];
 2986: 	if (point == "textval") {
 2987: 	    point = document.classgrade["TEXTVAL_"+partid].value;
 2988: 	    if (isNaN(point) || parseFloat(point) < 0) {
 2989: 		alert("$alertmsg"+parseFloat(point));
 2990: 		var resetbox = false;
 2991: 		for (var i=0; i<radioButton.length; i++) {
 2992: 		    if (radioButton[i].checked) {
 2993: 			textbox.value = i;
 2994: 			resetbox = true;
 2995: 		    }
 2996: 		}
 2997: 		if (!resetbox) {
 2998: 		    textbox.value = "";
 2999: 		}
 3000: 		return;
 3001: 	    }
 3002: 	    if (parseFloat(point) > parseFloat(weight)) {
 3003: 		var resp = confirm("You entered a value ("+parseFloat(point)+
 3004: 				   ") greater than the weight for the part. Accept?");
 3005: 		if (resp == false) {
 3006: 		    textbox.value = "";
 3007: 		    return;
 3008: 		}
 3009: 	    }
 3010: 	    for (var i=0; i<radioButton.length; i++) {
 3011: 		radioButton[i].checked=false;
 3012: 		if (parseFloat(point) == i) {
 3013: 		    radioButton[i].checked=true;
 3014: 		}
 3015: 	    }
 3016: 
 3017: 	} else {
 3018: 	    textbox.value = parseFloat(point);
 3019: 	}
 3020: 	for (i=0;i<document.classgrade.total.value;i++) {
 3021: 	    var user = document.classgrade["ctr"+i].value;
 3022: 	    user = user.replace(new RegExp(':', 'g'),"_");
 3023: 	    var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 3024: 	    var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 3025: 	    var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 3026: 	    if (saveval != "correct") {
 3027: 		scorename.value = point;
 3028: 		if (selname[0].selected != true) {
 3029: 		    selname[0].selected = true;
 3030: 		}
 3031: 	    }
 3032: 	}
 3033: 	document.classgrade["SELVAL_"+partid][0].selected = true;
 3034:     }
 3035: 
 3036:     function writeRadText(partid,weight) {
 3037: 	var selval   = document.classgrade["SELVAL_"+partid];
 3038: 	var radioButton = document.classgrade["RADVAL_"+partid];
 3039:         var override = document.classgrade["FORCE_"+partid].checked;
 3040: 	var textbox = document.classgrade["TEXTVAL_"+partid];
 3041: 	if (selval[1].selected || selval[2].selected) {
 3042: 	    for (var i=0; i<radioButton.length; i++) {
 3043: 		radioButton[i].checked=false;
 3044: 
 3045: 	    }
 3046: 	    textbox.value = "";
 3047: 
 3048: 	    for (i=0;i<document.classgrade.total.value;i++) {
 3049: 		var user = document.classgrade["ctr"+i].value;
 3050: 		user = user.replace(new RegExp(':', 'g'),"_");
 3051: 		var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 3052: 		var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 3053: 		var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 3054: 		if ((saveval != "correct") || override) {
 3055: 		    scorename.value = "";
 3056: 		    if (selval[1].selected) {
 3057: 			selname[1].selected = true;
 3058: 		    } else {
 3059: 			selname[2].selected = true;
 3060: 			if (Number(document.classgrade["GD_"+user+"_"+partid+"_tries"].value)) 
 3061: 			{document.classgrade["GD_"+user+"_"+partid+"_tries"].value = '0';}
 3062: 		    }
 3063: 		}
 3064: 	    }
 3065: 	} else {
 3066: 	    for (i=0;i<document.classgrade.total.value;i++) {
 3067: 		var user = document.classgrade["ctr"+i].value;
 3068: 		user = user.replace(new RegExp(':', 'g'),"_");
 3069: 		var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 3070: 		var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 3071: 		var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 3072: 		if ((saveval != "correct") || override) {
 3073: 		    scorename.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
 3074: 		    selname[0].selected = true;
 3075: 		}
 3076: 	    }
 3077: 	}	    
 3078:     }
 3079: 
 3080:     function changeSelect(partid,user) {
 3081: 	var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
 3082: 	var textbox = document.classgrade["GD_"+user+'_'+partid+"_awarded"];
 3083: 	var point  = textbox.value;
 3084: 	var weight = document.classgrade["weight_"+partid].value;
 3085: 
 3086: 	if (isNaN(point) || parseFloat(point) < 0) {
 3087: 	    alert("$alertmsg"+parseFloat(point));
 3088: 	    textbox.value = "";
 3089: 	    return;
 3090: 	}
 3091: 	if (parseFloat(point) > parseFloat(weight)) {
 3092: 	    var resp = confirm("You entered a value ("+parseFloat(point)+
 3093: 			       ") greater than the weight of the part. Accept?");
 3094: 	    if (resp == false) {
 3095: 		textbox.value = "";
 3096: 		return;
 3097: 	    }
 3098: 	}
 3099: 	selval[0].selected = true;
 3100:     }
 3101: 
 3102:     function changeOneScore(partid,user) {
 3103: 	var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
 3104: 	if (selval[1].selected || selval[2].selected) {
 3105: 	    document.classgrade["GD_"+user+'_'+partid+"_awarded"].value = "";
 3106: 	    if (selval[2].selected) {
 3107: 		document.classgrade["GD_"+user+'_'+partid+"_tries"].value = "0";
 3108: 	    }
 3109:         }
 3110:     }
 3111: 
 3112:     function resetEntry(numpart) {
 3113: 	for (ctpart=0;ctpart<numpart;ctpart++) {
 3114: 	    var partid = document.classgrade["partid_"+ctpart].value;
 3115: 	    var radioButton = document.classgrade["RADVAL_"+partid];
 3116: 	    var textbox = document.classgrade["TEXTVAL_"+partid];
 3117: 	    var selval  = document.classgrade["SELVAL_"+partid];
 3118: 	    for (var i=0; i<radioButton.length; i++) {
 3119: 		radioButton[i].checked=false;
 3120: 
 3121: 	    }
 3122: 	    textbox.value = "";
 3123: 	    selval[0].selected = true;
 3124: 
 3125: 	    for (i=0;i<document.classgrade.total.value;i++) {
 3126: 		var user = document.classgrade["ctr"+i].value;
 3127: 		user = user.replace(new RegExp(':', 'g'),"_");
 3128: 		var resetscore = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
 3129: 		resetscore.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
 3130: 		var resettries = document.classgrade["GD_"+user+"_"+partid+"_tries"];
 3131: 		resettries.value = document.classgrade["GD_"+user+"_"+partid+"_tries_s"].value;
 3132: 		var saveselval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
 3133: 		var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
 3134: 		if (saveselval == "excused") {
 3135: 		    if (selname[1].selected == false) { selname[1].selected = true;}
 3136: 		} else {
 3137: 		    if (selname[0].selected == false) {selname[0].selected = true};
 3138: 		}
 3139: 	    }
 3140: 	}
 3141:     }
 3142: 
 3143: </script>
 3144: VIEWJAVASCRIPT
 3145: }
 3146: 
 3147: #--- show scores for a section or whole class w/ option to change/update a score
 3148: sub viewgrades {
 3149:     my ($request) = shift;
 3150:     &viewgrades_js($request);
 3151: 
 3152:     my ($symb) = &get_symb($request);
 3153:     #need to make sure we have the correct data for later EXT calls, 
 3154:     #thus invalidate the cache
 3155:     &Apache::lonnet::devalidatecourseresdata(
 3156:                  $env{'course.'.$env{'request.course.id'}.'.num'},
 3157:                  $env{'course.'.$env{'request.course.id'}.'.domain'});
 3158:     &Apache::lonnet::clear_EXT_cache_status();
 3159: 
 3160:     my $result='<h3><span class="LC_info">'.&mt('Manual Grading').'</span></h3>';
 3161:     $result.='<h4>'.&mt('<b>Current Resource: </b>[_1]',$env{'form.probTitle'}).'</h4>'."\n";
 3162: 
 3163:     #view individual student submission form - called using Javascript viewOneStudent
 3164:     $result.=&jscriptNform($symb);
 3165: 
 3166:     #beginning of class grading form
 3167:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
 3168:     $result.= '<form action="/adm/grades" method="post" name="classgrade">'."\n".
 3169: 	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 3170: 	'<input type="hidden" name="command" value="editgrades" />'."\n".
 3171: 	&build_section_inputs().
 3172: 	'<input type="hidden" name="saveState" value="'.$env{'form.saveState'}.'" />'."\n".
 3173: 	'<input type="hidden" name="Status" value="'.$env{'stu_status'}.'" />'."\n".
 3174: 	'<input type="hidden" name="probTitle" value="'.$env{'form.probTitle'}.'" />'."\n";
 3175: 
 3176:     my $sectionClass;
 3177:     my $section_display = join (", ",&Apache::loncommon::get_env_multiple('form.section'));
 3178:     if ($env{'form.section'} eq 'all') {
 3179: 	$sectionClass=&mt('Class');
 3180:     } elsif ($env{'form.section'} eq 'none') {
 3181: 	$sectionClass=&mt('Students in no Section');
 3182:     } else {
 3183: 	$sectionClass=&mt('Students in Section(s) [_1]');
 3184:     }
 3185:     $result.=
 3186: 	'<h3>'.
 3187: 	&mt("Assign Common Grade to [_1]",$sectionClass,$section_display).'</h3>';
 3188:     $result.= &Apache::loncommon::start_data_table();
 3189:     #radio buttons/text box for assigning points for a section or class.
 3190:     #handles different parts of a problem
 3191:     my ($partlist,$handgrade,$responseType) = &response_type($symb);
 3192:     my %weight = ();
 3193:     my $ctsparts = 0;
 3194:     my %seen = ();
 3195:     my @part_response_id = &flatten_responseType($responseType);
 3196:     foreach my $part_response_id (@part_response_id) {
 3197:     	my ($partid,$respid) = @{ $part_response_id };
 3198: 	my $part_resp = join('_',@{ $part_response_id });
 3199: 	next if $seen{$partid};
 3200: 	$seen{$partid}++;
 3201: 	my $handgrade=$$handgrade{$part_resp};
 3202: 	my $wgt = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb);
 3203: 	$weight{$partid} = $wgt eq '' ? '1' : $wgt;
 3204: 
 3205: 	my $display_part=&get_display_part($partid,$symb);
 3206: 	my $radio.='<table border="0"><tr>';  
 3207: 	my $ctr = 0;
 3208: 	while ($ctr<=$weight{$partid}) { # display radio buttons in a nice table 10 across
 3209: 	    $radio.= '<td><label><input type="radio" name="RADVAL_'.$partid.'" '.
 3210: 		'onclick="javascript:writePoint(\''.$partid.'\','.$weight{$partid}.
 3211: 		','.$ctr.')" />'.$ctr."</label></td>\n";
 3212: 	    $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
 3213: 	    $ctr++;
 3214: 	}
 3215: 	$radio.='</tr></table>';
 3216: 	my $line = '<input type="text" name="TEXTVAL_'.
 3217: 	    $partid.'" size="4" '.'onChange="javascript:writePoint(\''.
 3218: 		$partid.'\','.$weight{$partid}.',\'textval\')" /> /'.
 3219: 	    $weight{$partid}.' '.&mt('(problem weight)').'</td>'."\n";
 3220: 	$line.= '<td><b>'.&mt('Grade Status').':</b><select name="SELVAL_'.$partid.'"'.
 3221: 	    'onChange="javascript:writeRadText(\''.$partid.'\','.
 3222: 		$weight{$partid}.')"> '.
 3223: 	    '<option selected="selected"> </option>'.
 3224: 	    '<option value="excused">'.&mt('excused').'</option>'.
 3225: 	    '<option value="reset status">'.&mt('reset status').'</option>'.
 3226: 	    '</select></td>'.
 3227:             '<td><label><input type="checkbox" name="FORCE_'.$partid.'" />'.&mt('Override "Correct"').'</label>';
 3228: 	$line.='<input type="hidden" name="partid_'.
 3229: 	    $ctsparts.'" value="'.$partid.'" />'."\n";
 3230: 	$line.='<input type="hidden" name="weight_'.
 3231: 	    $partid.'" value="'.$weight{$partid}.'" />'."\n";
 3232: 
 3233: 	$result.=
 3234: 	    &Apache::loncommon::start_data_table_row()."\n".
 3235: 	    '<td><b>'.&mt('Part').':</b></td><td>'.$display_part.'</td><td><b>'.&mt('Points').':</b></td><td>'.$radio.'</td><td>'.&mt('or').'</td><td>'.$line.'</td>'.
 3236: 	    &Apache::loncommon::end_data_table_row()."\n";
 3237: 	$ctsparts++;
 3238:     }
 3239:     $result.=&Apache::loncommon::end_data_table()."\n".
 3240: 	'<input type="hidden" name="totalparts" value="'.$ctsparts.'" />';
 3241:     $result.='<input type="button" value="'.&mt('Revert to Default').'" '.
 3242: 	'onClick="javascript:resetEntry('.$ctsparts.');" />';
 3243: 
 3244:     #table listing all the students in a section/class
 3245:     #header of table
 3246:     $result.= '<h3>'.&mt('Assign Grade to Specific Students in ').$sectionClass,
 3247: 			 $section_display.'</h3>';
 3248:     $result.= &Apache::loncommon::start_data_table().
 3249: 	&Apache::loncommon::start_data_table_header_row().
 3250: 	'<th>'.&mt('No.').'</th>'.
 3251: 	'<th>'.&nameUserString('header')."</th>\n";
 3252:     my (@parts) = sort(&getpartlist($symb));
 3253:     my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
 3254:     my @partids = ();
 3255:     foreach my $part (@parts) {
 3256: 	my $display=&Apache::lonnet::metadata($url,$part.'.display');
 3257:         my $narrowtext = &mt('Tries');
 3258: 	$display =~ s|^Number of Attempts|$narrowtext <br />|; # makes the column narrower
 3259: 	if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }
 3260: 	my ($partid) = &split_part_type($part);
 3261:         push(@partids,$partid);
 3262: 	my $display_part=&get_display_part($partid,$symb);
 3263: 	if ($display =~ /^Partial Credit Factor/) {
 3264: 	    $result.='<th>'.
 3265: 		&mt('Score Part: [_1]<br /> (weight = [_2])',
 3266: 		    $display_part,$weight{$partid}).'</th>'."\n";
 3267: 	    next;
 3268: 	    
 3269: 	} else {
 3270: 	    if ($display =~ /Problem Status/) {
 3271: 		my $grade_status_mt = &mt('Grade Status');
 3272: 		$display =~ s{Problem Status}{$grade_status_mt<br />};
 3273: 	    }
 3274: 	    my $part_mt = &mt('Part:');
 3275: 	    $display =~s{\[Part: \Q$partid\E\]}{$part_mt $display_part};
 3276: 	}
 3277: 
 3278: 	$result.='<th>'.$display.'</th>'."\n";
 3279:     }
 3280:     $result.=&Apache::loncommon::end_data_table_header_row();
 3281: 
 3282:     my %last_resets = 
 3283: 	&get_last_resets($symb,$env{'request.course.id'},\@partids);
 3284: 
 3285:     #get info for each student
 3286:     #list all the students - with points and grade status
 3287:     my (undef,undef,$fullname) = &getclasslist($env{'form.section'},'1');
 3288:     my $ctr = 0;
 3289:     foreach (sort 
 3290: 	     {
 3291: 		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
 3292: 		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
 3293: 		 }
 3294: 		 return $a cmp $b;
 3295: 	     } (keys(%$fullname))) {
 3296: 	$ctr++;
 3297: 	$result.=&viewstudentgrade($symb,$env{'request.course.id'},
 3298: 				   $_,$$fullname{$_},\@parts,\%weight,$ctr,\%last_resets);
 3299:     }
 3300:     $result.=&Apache::loncommon::end_data_table();
 3301:     $result.='<input type="hidden" name="total" value="'.$ctr.'" />'."\n";
 3302:     $result.='<input type="button" value="'.&mt('Save').'" '.
 3303: 	'onClick="javascript:submit();" target="_self" /></form>'."\n";
 3304:     if (scalar(%$fullname) eq 0) {
 3305: 	my $colspan=3+scalar(@parts);
 3306: 	my $section_display = join (", ",&Apache::loncommon::get_env_multiple('form.section'));
 3307:         my $stu_status = join(' or ',&Apache::loncommon::get_env_multiple('form.Status'));
 3308: 	$result='<span class="LC_warning">'.
 3309: 	    &mt('There are no students in section(s) [_1] with enrollment status [_2] to modify or grade.',
 3310: 	        $section_display, $stu_status).
 3311: 	    '</span>';
 3312:     }
 3313:     $result.=&show_grading_menu_form($symb);
 3314:     return $result;
 3315: }
 3316: 
 3317: #--- call by previous routine to display each student
 3318: sub viewstudentgrade {
 3319:     my ($symb,$courseid,$student,$fullname,$parts,$weight,$ctr,$last_resets) = @_;
 3320:     my ($uname,$udom) = split(/:/,$student);
 3321:     my %record=&Apache::lonnet::restore($symb,$courseid,$udom,$uname);
 3322:     my %aggregates = (); 
 3323:     my $result=&Apache::loncommon::start_data_table_row().'<td align="right">'.
 3324: 	'<input type="hidden" name="ctr'.($ctr-1).'" value="'.$student.'" />'.
 3325: 	"\n".$ctr.'&nbsp;</td><td>&nbsp;'.
 3326: 	'<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
 3327: 	'\');" target="_self">'.$fullname.'</a> '.
 3328: 	'<span class="LC_internal_info">('.$uname.($env{'user.domain'} eq $udom ? '' : ':'.$udom).')</span></td>'."\n";
 3329:     $student=~s/:/_/; # colon doen't work in javascript for names
 3330:     foreach my $apart (@$parts) {
 3331: 	my ($part,$type) = &split_part_type($apart);
 3332: 	my $score=$record{"resource.$part.$type"};
 3333:         $result.='<td align="center">';
 3334:         my ($aggtries,$totaltries);
 3335:         unless (exists($aggregates{$part})) {
 3336: 	    $totaltries = $record{'resource.'.$part.'.tries'};
 3337: 
 3338: 	    $aggtries = $totaltries;
 3339:             if ($$last_resets{$part}) {  
 3340:                 $aggtries = &get_num_tries(\%record,$$last_resets{$part},
 3341: 					   $part);
 3342:             }
 3343:             $result.='<input type="hidden" name="'.
 3344:                 'GD_'.$student.'_'.$part.'_aggtries" value="'.$aggtries.'" />'."\n";
 3345:             $result.='<input type="hidden" name="'.
 3346:                 'GD_'.$student.'_'.$part.'_totaltries" value="'.$totaltries.'" />'."\n";
 3347:             $aggregates{$part} = 1;
 3348:         }
 3349: 	if ($type eq 'awarded') {
 3350: 	    my $pts = $score eq '' ? '' : &compute_points($score,$$weight{$part});
 3351: 	    $result.='<input type="hidden" name="'.
 3352: 		'GD_'.$student.'_'.$part.'_awarded_s" value="'.$pts.'" />'."\n";
 3353: 	    $result.='<input type="text" name="'.
 3354: 		'GD_'.$student.'_'.$part.'_awarded" '.
 3355: 		'onChange="javascript:changeSelect(\''.$part.'\',\''.$student.
 3356: 		'\')" value="'.$pts.'" size="4" /></td>'."\n";
 3357: 	} elsif ($type eq 'solved') {
 3358: 	    my ($status,$foo)=split(/_/,$score,2);
 3359: 	    $status = 'nothing' if ($status eq '');
 3360: 	    $result.='<input type="hidden" name="'.'GD_'.$student.'_'.
 3361: 		$part.'_solved_s" value="'.$status.'" />'."\n";
 3362: 	    $result.='&nbsp;<select name="'.
 3363: 		'GD_'.$student.'_'.$part.'_solved" '.
 3364: 		'onChange="javascript:changeOneScore(\''.$part.'\',\''.$student.'\')" >'."\n";
 3365: 	    $result.= (($status eq 'excused') ? '<option> </option><option selected="selected" value="excused">'.&mt('excused').'</option>' 
 3366: 		: '<option selected="selected"> </option><option value="excused">'.&mt('excused').'</option>')."\n";
 3367: 	    $result.='<option value="reset status">'.&mt('reset status').'</option>';
 3368: 	    $result.="</select>&nbsp;</td>\n";
 3369: 	} else {
 3370: 	    $result.='<input type="hidden" name="'.
 3371: 		'GD_'.$student.'_'.$part.'_'.$type.'_s" value="'.$score.'" />'.
 3372: 		    "\n";
 3373: 	    $result.='<input type="text" name="'.
 3374: 		'GD_'.$student.'_'.$part.'_'.$type.'" '.
 3375: 		'value="'.$score.'" size="4" /></td>'."\n";
 3376: 	}
 3377:     }
 3378:     $result.=&Apache::loncommon::end_data_table_row();
 3379:     return $result;
 3380: }
 3381: 
 3382: #--- change scores for all the students in a section/class
 3383: #    record does not get update if unchanged
 3384: sub editgrades {
 3385:     my ($request) = @_;
 3386: 
 3387:     my $symb=&get_symb($request);
 3388:     my $section_display = join (", ",&Apache::loncommon::get_env_multiple('form.section'));
 3389:     my $title='<h2>'.&mt('Current Grade Status').'</h2>';
 3390:     $title.='<h4>'.&mt('<b>Current Resource: </b>[_1]',$env{'form.probTitle'}).'</h4>'."\n";
 3391:     $title.='<h4>'.&mt('<b>Section: </b>[_1]',$section_display).'</h4>'."\n";
 3392: 
 3393:     my $result= &Apache::loncommon::start_data_table().
 3394: 	&Apache::loncommon::start_data_table_header_row().
 3395: 	'<th rowspan="2" valign="middle">'.&mt('No.').'</th>'.
 3396: 	'<th rowspan="2" valign="middle">'.&nameUserString('header')."</th>\n";
 3397:     my %scoreptr = (
 3398: 		    'correct'  =>'correct_by_override',
 3399: 		    'incorrect'=>'incorrect_by_override',
 3400: 		    'excused'  =>'excused',
 3401: 		    'ungraded' =>'ungraded_attempted',
 3402: 		    'nothing'  => '',
 3403: 		    );
 3404:     my ($classlist,undef,$fullname) = &getclasslist($env{'form.section'},'0');
 3405: 
 3406:     my (@partid);
 3407:     my %weight = ();
 3408:     my %columns = ();
 3409:     my ($i,$ctr,$count,$rec_update) = (0,0,0,0);
 3410: 
 3411:     my (@parts) = sort(&getpartlist($symb));
 3412:     my $header;
 3413:     while ($ctr < $env{'form.totalparts'}) {
 3414: 	my $partid = $env{'form.partid_'.$ctr};
 3415: 	push(@partid,$partid);
 3416: 	$weight{$partid} = $env{'form.weight_'.$partid};
 3417: 	$ctr++;
 3418:     }
 3419:     my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
 3420:     foreach my $partid (@partid) {
 3421: 	$header .= '<th align="center">'.&mt('Old Score').'</th>'.
 3422: 	    '<th align="center">'.&mt('New Score').'</th>';
 3423: 	$columns{$partid}=2;
 3424: 	foreach my $stores (@parts) {
 3425: 	    my ($part,$type) = &split_part_type($stores);
 3426: 	    if ($part !~ m/^\Q$partid\E/) { next;}
 3427: 	    if ($type eq 'awarded' || $type eq 'solved') { next; }
 3428: 	    my $display=&Apache::lonnet::metadata($url,$stores.'.display');
 3429: 	    $display =~ s/\[Part: \Q$part\E\]//;
 3430:             my $narrowtext = &mt('Tries');
 3431: 	    $display =~ s/Number of Attempts/$narrowtext/;
 3432: 	    $header .= '<th align="center">'.&mt('Old').' '.$display.'</th>'.
 3433: 		'<th align="center">'.&mt('New').' '.$display.'</th>';
 3434: 	    $columns{$partid}+=2;
 3435: 	}
 3436:     }
 3437:     foreach my $partid (@partid) {
 3438: 	my $display_part=&get_display_part($partid,$symb);
 3439: 	$result .= '<th colspan="'.$columns{$partid}.'" align="center">'.
 3440: 	    &mt('Part: [_1] (Weight = [_2])',$display_part,$weight{$partid}).
 3441: 	    '</th>';
 3442: 
 3443:     }
 3444:     $result .= &Apache::loncommon::end_data_table_header_row().
 3445: 	&Apache::loncommon::start_data_table_header_row().
 3446: 	$header.
 3447: 	&Apache::loncommon::end_data_table_header_row();
 3448:     my @noupdate;
 3449:     my ($updateCtr,$noupdateCtr) = (1,1);
 3450:     for ($i=0; $i<$env{'form.total'}; $i++) {
 3451: 	my $line;
 3452: 	my $user = $env{'form.ctr'.$i};
 3453: 	my ($uname,$udom)=split(/:/,$user);
 3454: 	my %newrecord;
 3455: 	my $updateflag = 0;
 3456: 	$line .= '<td>'.&nameUserString(undef,$$fullname{$user},$uname,$udom).'</td>';
 3457: 	my $usec=$classlist->{"$uname:$udom"}[5];
 3458: 	if (!&canmodify($usec)) {
 3459: 	    my $numcols=scalar(@partid)*4+2;
 3460: 	    push(@noupdate,
 3461: 		 $line."<td colspan=\"$numcols\"><span class=\"LC_warning\">".
 3462: 		 &mt('Not allowed to modify student')."</span></td></tr>");
 3463: 	    next;
 3464: 	}
 3465:         my %aggregate = ();
 3466:         my $aggregateflag = 0;
 3467: 	$user=~s/:/_/; # colon doen't work in javascript for names
 3468: 	foreach (@partid) {
 3469: 	    my $old_aw    = $env{'form.GD_'.$user.'_'.$_.'_awarded_s'};
 3470: 	    my $old_part_pcr = $old_aw/($weight{$_} ne '0' ? $weight{$_}:1);
 3471: 	    my $old_part  = $old_aw eq '' ? '' : $old_part_pcr;
 3472: 	    my $old_score = $scoreptr{$env{'form.GD_'.$user.'_'.$_.'_solved_s'}};
 3473: 	    my $awarded   = $env{'form.GD_'.$user.'_'.$_.'_awarded'};
 3474: 	    my $pcr       = $awarded/($weight{$_} ne '0' ? $weight{$_} : 1);
 3475: 	    my $partial   = $awarded eq '' ? '' : $pcr;
 3476: 	    my $score;
 3477: 	    if ($partial eq '') {
 3478: 		$score = $scoreptr{$env{'form.GD_'.$user.'_'.$_.'_solved_s'}};
 3479: 	    } elsif ($partial > 0) {
 3480: 		$score = 'correct_by_override';
 3481: 	    } elsif ($partial == 0) {
 3482: 		$score = 'incorrect_by_override';
 3483: 	    }
 3484: 	    my $dropMenu = $env{'form.GD_'.$user.'_'.$_.'_solved'};
 3485: 	    $score = 'excused' if (($dropMenu eq 'excused') && ($score ne 'excused'));
 3486: 
 3487: 	    $newrecord{'resource.'.$_.'.regrader'}=
 3488: 		"$env{'user.name'}:$env{'user.domain'}";
 3489: 	    if ($dropMenu eq 'reset status' &&
 3490: 		$old_score ne '') { # ignore if no previous attempts => nothing to reset
 3491: 		$newrecord{'resource.'.$_.'.tries'} = '';
 3492: 		$newrecord{'resource.'.$_.'.solved'} = '';
 3493: 		$newrecord{'resource.'.$_.'.award'} = '';
 3494: 		$newrecord{'resource.'.$_.'.awarded'} = '';
 3495: 		$updateflag = 1;
 3496:                 if ($env{'form.GD_'.$user.'_'.$_.'_aggtries'} > 0) {
 3497:                     my $aggtries = $env{'form.GD_'.$user.'_'.$_.'_aggtries'};
 3498:                     my $totaltries = $env{'form.GD_'.$user.'_'.$_.'_totaltries'};
 3499:                     my $solvedstatus = $env{'form.GD_'.$user.'_'.$_.'_solved_s'};
 3500:                     &decrement_aggs($symb,$_,\%aggregate,$aggtries,$totaltries,$solvedstatus);
 3501:                     $aggregateflag = 1;
 3502:                 }
 3503: 	    } elsif (!($old_part eq $partial && $old_score eq $score)) {
 3504: 		$updateflag = 1;
 3505: 		$newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
 3506: 		$newrecord{'resource.'.$_.'.solved'}   = $score;
 3507: 		$rec_update++;
 3508: 	    }
 3509: 
 3510: 	    $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
 3511: 		'<td align="center">'.$awarded.
 3512: 		($score eq 'excused' ? $score : '').'&nbsp;</td>';
 3513: 
 3514: 
 3515: 	    my $partid=$_;
 3516: 	    foreach my $stores (@parts) {
 3517: 		my ($part,$type) = &split_part_type($stores);
 3518: 		if ($part !~ m/^\Q$partid\E/) { next;}
 3519: 		if ($type eq 'awarded' || $type eq 'solved') { next; }
 3520: 		my $old_aw    = $env{'form.GD_'.$user.'_'.$part.'_'.$type.'_s'};
 3521: 		my $awarded   = $env{'form.GD_'.$user.'_'.$part.'_'.$type};
 3522: 		if ($awarded ne '' && $awarded ne $old_aw) {
 3523: 		    $newrecord{'resource.'.$part.'.'.$type}= $awarded;
 3524: 		    $newrecord{'resource.'.$part.'.regrader'}="$env{'user.name'}:$env{'user.domain'}";
 3525: 		    $updateflag=1;
 3526: 		}
 3527: 		$line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
 3528: 		    '<td align="center">'.$awarded.'&nbsp;</td>';
 3529: 	    }
 3530: 	}
 3531: 	$line.="\n";
 3532: 
 3533: 	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 3534: 	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 3535: 
 3536: 	if ($updateflag) {
 3537: 	    $count++;
 3538: 	    &Apache::lonnet::cstore(\%newrecord,$symb,$env{'request.course.id'},
 3539: 				    $udom,$uname);
 3540: 
 3541: 	    if (&Apache::bridgetask::in_queue('gradingqueue',$symb,$cdom,
 3542: 					      $cnum,$udom,$uname)) {
 3543: 		# need to figure out if should be in queue.
 3544: 		my %record =  
 3545: 		    &Apache::lonnet::restore($symb,$env{'request.course.id'},
 3546: 					     $udom,$uname);
 3547: 		my $all_graded = 1;
 3548: 		my $none_graded = 1;
 3549: 		foreach my $part (@parts) {
 3550: 		    if ( $record{'resource.'.$part.'.awarded'} eq '' ) {
 3551: 			$all_graded = 0;
 3552: 		    } else {
 3553: 			$none_graded = 0;
 3554: 		    }
 3555: 		}
 3556: 
 3557: 		if ($all_graded || $none_graded) {
 3558: 		    &Apache::bridgetask::remove_from_queue('gradingqueue',
 3559: 							   $symb,$cdom,$cnum,
 3560: 							   $udom,$uname);
 3561: 		}
 3562: 	    }
 3563: 
 3564: 	    $result.=&Apache::loncommon::start_data_table_row().
 3565: 		'<td align="right">&nbsp;'.$updateCtr.'&nbsp;</td>'.$line.
 3566: 		&Apache::loncommon::end_data_table_row();
 3567: 	    $updateCtr++;
 3568: 	} else {
 3569: 	    push(@noupdate,
 3570: 		 '<td align="right">&nbsp;'.$noupdateCtr.'&nbsp;</td>'.$line);
 3571: 	    $noupdateCtr++;
 3572: 	}
 3573:         if ($aggregateflag) {
 3574:             &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
 3575: 				  $cdom,$cnum);
 3576:         }
 3577:     }
 3578:     if (@noupdate) {
 3579: #	my $numcols=(scalar(@partid)*(scalar(@parts)-1)*2)+3;
 3580: 	my $numcols=scalar(@partid)*4+2;
 3581: 	$result .= &Apache::loncommon::start_data_table_row('LC_empty_row').
 3582: 	    '<td align="center" colspan="'.$numcols.'">'.
 3583: 	    &mt('No Changes Occurred For the Students Below').
 3584: 	    '</td>'.
 3585: 	    &Apache::loncommon::end_data_table_row();
 3586: 	foreach my $line (@noupdate) {
 3587: 	    $result.=
 3588: 		&Apache::loncommon::start_data_table_row().
 3589: 		$line.
 3590: 		&Apache::loncommon::end_data_table_row();
 3591: 	}
 3592:     }
 3593:     $result .= &Apache::loncommon::end_data_table().
 3594: 	&show_grading_menu_form($symb);
 3595:     my $msg = '<p><b>'.
 3596: 	&mt('Number of records updated = [_1] for [quant,_2,student].',
 3597: 	    $rec_update,$count).'</b><br />'.
 3598: 	'<b>'.&mt('Total number of students = [_1]',$env{'form.total'}).
 3599: 	'</b></p>';
 3600:     return $title.$msg.$result;
 3601: }
 3602: 
 3603: sub split_part_type {
 3604:     my ($partstr) = @_;
 3605:     my ($temp,@allparts)=split(/_/,$partstr);
 3606:     my $type=pop(@allparts);
 3607:     my $part=join('_',@allparts);
 3608:     return ($part,$type);
 3609: }
 3610: 
 3611: #------------- end of section for handling grading by section/class ---------
 3612: #
 3613: #----------------------------------------------------------------------------
 3614: 
 3615: 
 3616: #----------------------------------------------------------------------------
 3617: #
 3618: #-------------------------- Next few routines handles grading by csv upload
 3619: #
 3620: #--- Javascript to handle csv upload
 3621: sub csvupload_javascript_reverse_associate {
 3622:     my $error1=&mt('You need to specify the username or ID');
 3623:     my $error2=&mt('You need to specify at least one grading field');
 3624:   return(<<ENDPICK);
 3625:   function verify(vf) {
 3626:     var foundsomething=0;
 3627:     var founduname=0;
 3628:     var foundID=0;
 3629:     for (i=0;i<=vf.nfields.value;i++) {
 3630:       tw=eval('vf.f'+i+'.selectedIndex');
 3631:       if (i==0 && tw!=0) { foundID=1; }
 3632:       if (i==1 && tw!=0) { founduname=1; }
 3633:       if (i!=0 && i!=1 && i!=2 && tw!=0) { foundsomething=1; }
 3634:     }
 3635:     if (founduname==0 && foundID==0) {
 3636: 	alert('$error1');
 3637: 	return;
 3638:     }
 3639:     if (foundsomething==0) {
 3640: 	alert('$error2');
 3641: 	return;
 3642:     }
 3643:     vf.submit();
 3644:   }
 3645:   function flip(vf,tf) {
 3646:     var nw=eval('vf.f'+tf+'.selectedIndex');
 3647:     var i;
 3648:     for (i=0;i<=vf.nfields.value;i++) {
 3649:       //can not pick the same destination field for both name and domain
 3650:       if (((i ==0)||(i ==1)) && 
 3651:           ((tf==0)||(tf==1)) && 
 3652:           (i!=tf) &&
 3653:           (eval('vf.f'+i+'.selectedIndex')==nw)) {
 3654:         eval('vf.f'+i+'.selectedIndex=0;')
 3655:       }
 3656:     }
 3657:   }
 3658: ENDPICK
 3659: }
 3660: 
 3661: sub csvupload_javascript_forward_associate {
 3662:     my $error1=&mt('You need to specify the username or ID');
 3663:     my $error2=&mt('You need to specify at least one grading field');
 3664:   return(<<ENDPICK);
 3665:   function verify(vf) {
 3666:     var foundsomething=0;
 3667:     var founduname=0;
 3668:     var foundID=0;
 3669:     for (i=0;i<=vf.nfields.value;i++) {
 3670:       tw=eval('vf.f'+i+'.selectedIndex');
 3671:       if (tw==1) { foundID=1; }
 3672:       if (tw==2) { founduname=1; }
 3673:       if (tw>3) { foundsomething=1; }
 3674:     }
 3675:     if (founduname==0 && foundID==0) {
 3676: 	alert('$error1');
 3677: 	return;
 3678:     }
 3679:     if (foundsomething==0) {
 3680: 	alert('$error2');
 3681: 	return;
 3682:     }
 3683:     vf.submit();
 3684:   }
 3685:   function flip(vf,tf) {
 3686:     var nw=eval('vf.f'+tf+'.selectedIndex');
 3687:     var i;
 3688:     //can not pick the same destination field twice
 3689:     for (i=0;i<=vf.nfields.value;i++) {
 3690:       if ((i!=tf) && (eval('vf.f'+i+'.selectedIndex')==nw)) {
 3691:         eval('vf.f'+i+'.selectedIndex=0;')
 3692:       }
 3693:     }
 3694:   }
 3695: ENDPICK
 3696: }
 3697: 
 3698: sub csvuploadmap_header {
 3699:     my ($request,$symb,$datatoken,$distotal)= @_;
 3700:     my $javascript;
 3701:     if ($env{'form.upfile_associate'} eq 'reverse') {
 3702: 	$javascript=&csvupload_javascript_reverse_associate();
 3703:     } else {
 3704: 	$javascript=&csvupload_javascript_forward_associate();
 3705:     }
 3706: 
 3707:     my ($result) = &showResourceInfo($symb,$env{'form.probTitle'});
 3708:     my $checked=(($env{'form.noFirstLine'})?' checked="checked"':'');
 3709:     my $ignore=&mt('Ignore First Line');
 3710:     $symb = &Apache::lonenc::check_encrypt($symb);
 3711:     $request->print(<<ENDPICK);
 3712: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
 3713: <h3><span class="LC_info">Uploading Class Grades</span></h3>
 3714: $result
 3715: <hr />
 3716: <h3>Identify fields</h3>
 3717: Total number of records found in file: $distotal <hr />
 3718: Enter as many fields as you can. The system will inform you and bring you back
 3719: to this page if the data selected is insufficient to run your class.<hr />
 3720: <input type="button" value="Reverse Association" onClick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
 3721: <label><input type="checkbox" name="noFirstLine" $checked />$ignore</label>
 3722: <input type="hidden" name="associate"  value="" />
 3723: <input type="hidden" name="phase"      value="three" />
 3724: <input type="hidden" name="datatoken"  value="$datatoken" />
 3725: <input type="hidden" name="fileupload" value="$env{'form.fileupload'}" />
 3726: <input type="hidden" name="upfiletype" value="$env{'form.upfiletype'}" />
 3727: <input type="hidden" name="upfile_associate" 
 3728:                                        value="$env{'form.upfile_associate'}" />
 3729: <input type="hidden" name="symb"       value="$symb" />
 3730: <input type="hidden" name="saveState"  value="$env{'form.saveState'}" />
 3731: <input type="hidden" name="probTitle"  value="$env{'form.probTitle'}" />
 3732: <input type="hidden" name="command"    value="csvuploadoptions" />
 3733: <hr />
 3734: <script type="text/javascript" language="Javascript">
 3735: $javascript
 3736: </script>
 3737: ENDPICK
 3738:     return '';
 3739: 
 3740: }
 3741: 
 3742: sub csvupload_fields {
 3743:     my ($symb) = @_;
 3744:     my (@parts) = &getpartlist($symb);
 3745:     my @fields=(['ID','Student ID'],
 3746: 		['username','Student Username'],
 3747: 		['domain','Student Domain']);
 3748:     my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
 3749:     foreach my $part (sort(@parts)) {
 3750: 	my @datum;
 3751: 	my $display=&Apache::lonnet::metadata($url,$part.'.display');
 3752: 	my $name=$part;
 3753: 	if  (!$display) { $display = $name; }
 3754: 	@datum=($name,$display);
 3755: 	if ($name=~/^stores_(.*)_awarded/) {
 3756: 	    push(@fields,['stores_'.$1.'_points',"Points [Part: $1]"]);
 3757: 	}
 3758: 	push(@fields,\@datum);
 3759:     }
 3760:     return (@fields);
 3761: }
 3762: 
 3763: sub csvuploadmap_footer {
 3764:     my ($request,$i,$keyfields) =@_;
 3765:     $request->print(<<ENDPICK);
 3766: </table>
 3767: <input type="hidden" name="nfields" value="$i" />
 3768: <input type="hidden" name="keyfields" value="$keyfields" />
 3769: <input type="button" onClick="javascript:verify(this.form)" value="Assign Grades" /><br />
 3770: </form>
 3771: ENDPICK
 3772: }
 3773: 
 3774: sub checkforfile_js {
 3775:     my $alertmsg = &mt('Please use the browse button to select a file from your local directory.');
 3776:     my $result =<<CSVFORMJS;
 3777: <script type="text/javascript" language="javascript">
 3778:     function checkUpload(formname) {
 3779: 	if (formname.upfile.value == "") {
 3780: 	    alert("$alertmsg");
 3781: 	    return false;
 3782: 	}
 3783: 	formname.submit();
 3784:     }
 3785:     </script>
 3786: CSVFORMJS
 3787:     return $result;
 3788: }
 3789: 
 3790: sub upcsvScores_form {
 3791:     my ($request) = shift;
 3792:     my ($symb)=&get_symb($request);
 3793:     if (!$symb) {return '';}
 3794:     my $result=&checkforfile_js();
 3795:     $env{'form.probTitle'} = &Apache::lonnet::gettitle($symb);
 3796:     my ($table) = &showResourceInfo($symb,$env{'form.probTitle'});
 3797:     $result.=$table;
 3798:     $result.='<br /><table width="100%" border="0"><tr><td bgcolor="#777777">'."\n";
 3799:     $result.='<table width="100%" border="0"><tr bgcolor="#e6ffff"><td>'."\n";
 3800:     $result.='&nbsp;<b>'.&mt('Specify a file containing the class scores for current resource.').
 3801: 	'</b></td></tr>'."\n";
 3802:     $result.='<tr bgcolor=#ffffe6><td>'."\n";
 3803:     my $upload=&mt("Upload Scores");
 3804:     my $upfile_select=&Apache::loncommon::upfile_select_html();
 3805:     my $ignore=&mt('Ignore First Line');
 3806:     $symb = &Apache::lonenc::check_encrypt($symb);
 3807:     $result.=<<ENDUPFORM;
 3808: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
 3809: <input type="hidden" name="symb" value="$symb" />
 3810: <input type="hidden" name="command" value="csvuploadmap" />
 3811: <input type="hidden" name="probTitle" value="$env{'form.probTitle'}" />
 3812: <input type="hidden" name="saveState"  value="$env{'form.saveState'}" />
 3813: $upfile_select
 3814: <br /><input type="button" onClick="javascript:checkUpload(this.form);" value="$upload" />
 3815: <label><input type="checkbox" name="noFirstLine" />$ignore</label>
 3816: </form>
 3817: ENDUPFORM
 3818:     $result.=&Apache::loncommon::help_open_topic("Course_Convert_To_CSV",
 3819:                            &mt("How do I create a CSV file from a spreadsheet"))
 3820:     .'</td></tr></table>'."\n";
 3821:     $result.='</td></tr></table><br /><br />'."\n";
 3822:     $result.=&show_grading_menu_form($symb);
 3823:     return $result;
 3824: }
 3825: 
 3826: 
 3827: sub csvuploadmap {
 3828:     my ($request)= @_;
 3829:     my ($symb)=&get_symb($request);
 3830:     if (!$symb) {return '';}
 3831: 
 3832:     my $datatoken;
 3833:     if (!$env{'form.datatoken'}) {
 3834: 	$datatoken=&Apache::loncommon::upfile_store($request);
 3835:     } else {
 3836: 	$datatoken=$env{'form.datatoken'};
 3837: 	&Apache::loncommon::load_tmp_file($request);
 3838:     }
 3839:     my @records=&Apache::loncommon::upfile_record_sep();
 3840:     if ($env{'form.noFirstLine'}) { shift(@records); }
 3841:     &csvuploadmap_header($request,$symb,$datatoken,$#records+1);
 3842:     my ($i,$keyfields);
 3843:     if (@records) {
 3844: 	my @fields=&csvupload_fields($symb);
 3845: 
 3846: 	if ($env{'form.upfile_associate'} eq 'reverse') {	
 3847: 	    &Apache::loncommon::csv_print_samples($request,\@records);
 3848: 	    $i=&Apache::loncommon::csv_print_select_table($request,\@records,
 3849: 							  \@fields);
 3850: 	    foreach (@fields) { $keyfields.=$_->[0].','; }
 3851: 	    chop($keyfields);
 3852: 	} else {
 3853: 	    unshift(@fields,['none','']);
 3854: 	    $i=&Apache::loncommon::csv_samples_select_table($request,\@records,
 3855: 							    \@fields);
 3856:             foreach my $rec (@records) {
 3857:                 my %temp = &Apache::loncommon::record_sep($rec);
 3858:                 if (%temp) {
 3859:                     $keyfields=join(',',sort(keys(%temp)));
 3860:                     last;
 3861:                 }
 3862:             }
 3863: 	}
 3864:     }
 3865:     &csvuploadmap_footer($request,$i,$keyfields);
 3866:     $request->print(&show_grading_menu_form($symb));
 3867: 
 3868:     return '';
 3869: }
 3870: 
 3871: sub csvuploadoptions {
 3872:     my ($request)= @_;
 3873:     my ($symb)=&get_symb($request);
 3874:     my $checked=(($env{'form.noFirstLine'})?'1':'0');
 3875:     my $ignore=&mt('Ignore First Line');
 3876:     $request->print(<<ENDPICK);
 3877: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
 3878: <h3><span class="LC_info">Uploading Class Grade Options</span></h3>
 3879: <input type="hidden" name="command"    value="csvuploadassign" />
 3880: <!--
 3881: <p>
 3882: <label>
 3883:    <input type="checkbox" name="show_full_results" />
 3884:    Show a table of all changes
 3885: </label>
 3886: </p>
 3887: -->
 3888: <p>
 3889: <label>
 3890:    <input type="checkbox" name="overwite_scores" checked="checked" />
 3891:    Overwrite any existing score
 3892: </label>
 3893: </p>
 3894: ENDPICK
 3895:     my %fields=&get_fields();
 3896:     if (!defined($fields{'domain'})) {
 3897: 	my $domform = &Apache::loncommon::select_dom_form($env{'request.role.domain'},'default_domain');
 3898: 	$request->print("\n<p> Users are in domain: ".$domform."</p>\n");
 3899:     }
 3900:     foreach my $key (sort(keys(%env))) {
 3901: 	if ($key !~ /^form\.(.*)$/) { next; }
 3902: 	my $cleankey=$1;
 3903: 	if ($cleankey eq 'command') { next; }
 3904: 	$request->print('<input type="hidden" name="'.$cleankey.
 3905: 			'"  value="'.$env{$key}.'" />'."\n");
 3906:     }
 3907:     # FIXME do a check for any duplicated user ids...
 3908:     # FIXME do a check for any invalid user ids?...
 3909:     $request->print('<input type="submit" value="Assign Grades" /><br />
 3910: <hr /></form>'."\n");
 3911:     $request->print(&show_grading_menu_form($symb));
 3912:     return '';
 3913: }
 3914: 
 3915: sub get_fields {
 3916:     my %fields;
 3917:     my @keyfields = split(/\,/,$env{'form.keyfields'});
 3918:     for (my $i=0; $i<=$env{'form.nfields'}; $i++) {
 3919: 	if ($env{'form.upfile_associate'} eq 'reverse') {
 3920: 	    if ($env{'form.f'.$i} ne 'none') {
 3921: 		$fields{$keyfields[$i]}=$env{'form.f'.$i};
 3922: 	    }
 3923: 	} else {
 3924: 	    if ($env{'form.f'.$i} ne 'none') {
 3925: 		$fields{$env{'form.f'.$i}}=$keyfields[$i];
 3926: 	    }
 3927: 	}
 3928:     }
 3929:     return %fields;
 3930: }
 3931: 
 3932: sub csvuploadassign {
 3933:     my ($request)= @_;
 3934:     my ($symb)=&get_symb($request);
 3935:     if (!$symb) {return '';}
 3936:     my $error_msg = '';
 3937:     &Apache::loncommon::load_tmp_file($request);
 3938:     my @gradedata = &Apache::loncommon::upfile_record_sep();
 3939:     if ($env{'form.noFirstLine'}) { shift(@gradedata); }
 3940:     my %fields=&get_fields();
 3941:     $request->print('<h3>Assigning Grades</h3>');
 3942:     my $courseid=$env{'request.course.id'};
 3943:     my ($classlist) = &getclasslist('all',0);
 3944:     my @notallowed;
 3945:     my @skipped;
 3946:     my $countdone=0;
 3947:     foreach my $grade (@gradedata) {
 3948: 	my %entries=&Apache::loncommon::record_sep($grade);
 3949: 	my $domain;
 3950: 	if ($entries{$fields{'domain'}}) {
 3951: 	    $domain=$entries{$fields{'domain'}};
 3952: 	} else {
 3953: 	    $domain=$env{'form.default_domain'};
 3954: 	}
 3955: 	$domain=~s/\s//g;
 3956: 	my $username=$entries{$fields{'username'}};
 3957: 	$username=~s/\s//g;
 3958: 	if (!$username) {
 3959: 	    my $id=$entries{$fields{'ID'}};
 3960: 	    $id=~s/\s//g;
 3961: 	    my %ids=&Apache::lonnet::idget($domain,$id);
 3962: 	    $username=$ids{$id};
 3963: 	}
 3964: 	if (!exists($$classlist{"$username:$domain"})) {
 3965: 	    my $id=$entries{$fields{'ID'}};
 3966: 	    $id=~s/\s//g;
 3967: 	    if ($id) {
 3968: 		push(@skipped,"$id:$domain");
 3969: 	    } else {
 3970: 		push(@skipped,"$username:$domain");
 3971: 	    }
 3972: 	    next;
 3973: 	}
 3974: 	my $usec=$classlist->{"$username:$domain"}[5];
 3975: 	if (!&canmodify($usec)) {
 3976: 	    push(@notallowed,"$username:$domain");
 3977: 	    next;
 3978: 	}
 3979: 	my %points;
 3980: 	my %grades;
 3981: 	foreach my $dest (keys(%fields)) {
 3982: 	    if ($dest eq 'ID' || $dest eq 'username' ||
 3983: 		$dest eq 'domain') { next; }
 3984: 	    if ($entries{$fields{$dest}} =~ /^\s*$/) { next; }
 3985: 	    if ($dest=~/stores_(.*)_points/) {
 3986: 		my $part=$1;
 3987: 		my $wgt =&Apache::lonnet::EXT('resource.'.$part.'.weight',
 3988: 					      $symb,$domain,$username);
 3989:                 if ($wgt) {
 3990:                     $entries{$fields{$dest}}=~s/\s//g;
 3991:                     my $pcr=$entries{$fields{$dest}} / $wgt;
 3992:                     my $award=($pcr == 0) ? 'incorrect_by_override'
 3993:                                           : 'correct_by_override';
 3994:                     $grades{"resource.$part.awarded"}=$pcr;
 3995:                     $grades{"resource.$part.solved"}=$award;
 3996:                     $points{$part}=1;
 3997:                 } else {
 3998:                     $error_msg = "<br />" .
 3999:                         &mt("Some point values were assigned"
 4000:                             ." for problems with a weight "
 4001:                             ."of zero. These values were "
 4002:                             ."ignored.");
 4003:                 }
 4004: 	    } else {
 4005: 		if ($dest=~/stores_(.*)_awarded/) { if ($points{$1}) {next;} }
 4006: 		if ($dest=~/stores_(.*)_solved/)  { if ($points{$1}) {next;} }
 4007: 		my $store_key=$dest;
 4008: 		$store_key=~s/^stores/resource/;
 4009: 		$store_key=~s/_/\./g;
 4010: 		$grades{$store_key}=$entries{$fields{$dest}};
 4011: 	    }
 4012: 	}
 4013: 	if (! %grades) { 
 4014:            push(@skipped,&mt("[_1]: no data to save","$username:$domain")); 
 4015:         } else {
 4016: 	   $grades{"resource.regrader"}="$env{'user.name'}:$env{'user.domain'}";
 4017: 	   my $result=&Apache::lonnet::cstore(\%grades,$symb,
 4018: 					   $env{'request.course.id'},
 4019: 					   $domain,$username);
 4020: 	   if ($result eq 'ok') {
 4021: 	      $request->print('.');
 4022: 	   } else {
 4023: 	      $request->print("<p><span class=\"LC_error\">".
 4024:                               &mt("Failed to save data for student [_1]. Message when trying to save was: [_2]",
 4025:                                   "$username:$domain",$result)."</span></p>");
 4026: 	   }
 4027: 	   $request->rflush();
 4028: 	   $countdone++;
 4029:         }
 4030:     }
 4031:     $request->print('<br /><span class="LC_info">'.&mt("Saved [_1] students",$countdone)."</span>\n");
 4032:     if (@skipped) {
 4033: 	$request->print('<p><span class="LC_warning">'.&mt('Skipped Students').'</span></p>');
 4034: 	foreach my $student (@skipped) { $request->print("$student<br />\n"); }
 4035:     }
 4036:     if (@notallowed) {
 4037: 	$request->print('<p><span class="LC_error">'.&mt('Students Not Allowed to Modify').'</span></p>');
 4038: 	foreach my $student (@notallowed) { $request->print("$student<br />\n"); }
 4039:     }
 4040:     $request->print("<br />\n");
 4041:     $request->print(&show_grading_menu_form($symb));
 4042:     return $error_msg;
 4043: }
 4044: #------------- end of section for handling csv file upload ---------
 4045: #
 4046: #-------------------------------------------------------------------
 4047: #
 4048: #-------------- Next few routines handle grading by page/sequence
 4049: #
 4050: #--- Select a page/sequence and a student to grade
 4051: sub pickStudentPage {
 4052:     my ($request) = shift;
 4053: 
 4054:     my $alertmsg = &mt('Please select the student you wish to grade.');
 4055:     $request->print(<<LISTJAVASCRIPT);
 4056: <script type="text/javascript" language="javascript">
 4057: 
 4058: function checkPickOne(formname) {
 4059:     if (radioSelection(formname.student) == null) {
 4060: 	alert("$alertmsg");
 4061: 	return;
 4062:     }
 4063:     ptr = pullDownSelection(formname.selectpage);
 4064:     formname.page.value = formname["page"+ptr].value;
 4065:     formname.title.value = formname["title"+ptr].value;
 4066:     formname.submit();
 4067: }
 4068: 
 4069: </script>
 4070: LISTJAVASCRIPT
 4071:     &commonJSfunctions($request);
 4072:     my ($symb) = &get_symb($request);
 4073:     my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
 4074:     my $cnum      = $env{"course.$env{'request.course.id'}.num"};
 4075:     my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
 4076: 
 4077:     my $result='<h3><span class="LC_info">&nbsp;'.
 4078: 	&mt('Manual Grading by Page or Sequence').'</span></h3>';
 4079: 
 4080:     $result.='<form action="/adm/grades" method="post" name="displayPage">'."\n";
 4081:     my ($titles,$symbx) = &getSymbMap();
 4082:     my ($curpage) =&Apache::lonnet::decode_symb($symb); 
 4083: #    my ($curpage,$mapId) =&Apache::lonnet::decode_symb($symb); 
 4084: #    my $type=($curpage =~ /\.(page|sequence)/);
 4085:     my $select = '<select name="selectpage">'."\n";
 4086:     my $ctr=0;
 4087:     foreach (@$titles) {
 4088: 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
 4089: 	$select.='<option value="'.$ctr.'" '.
 4090: 	    ($$symbx{$_} =~ /$curpage$/ ? 'selected="selected"' : '').
 4091: 	    '>'.$showtitle.'</option>'."\n";
 4092: 	$ctr++;
 4093:     }
 4094:     $select.= '</select>';
 4095:     $result.='&nbsp;<b>'.&mt('Problems from').':</b> '.$select."<br />\n";
 4096: 
 4097:     $ctr=0;
 4098:     foreach (@$titles) {
 4099: 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
 4100: 	$result.='<input type="hidden" name="page'.$ctr.'" value="'.$$symbx{$_}.'" />'."\n";
 4101: 	$result.='<input type="hidden" name="title'.$ctr.'" value="'.$showtitle.'" />'."\n";
 4102: 	$ctr++;
 4103:     }
 4104:     $result.='<input type="hidden" name="page" />'."\n".
 4105: 	'<input type="hidden" name="title" />'."\n";
 4106: 
 4107:     my $options =
 4108: 	'<label><input type="radio" name="vProb" value="no" checked="checked" /> '.&mt('no').' </label>'."\n".
 4109: 	'<label><input type="radio" name="vProb" value="yes" /> '.&mt('yes').' </label>'."<br />\n";
 4110:     $result.='&nbsp;<b>'.&mt('View Problem Text').': </b>'.$options;
 4111: 
 4112:     $options =
 4113: 	'<label><input type="radio" name="lastSub" value="none" /> '.&mt('none').' </label>'."\n".
 4114: 	'<label><input type="radio" name="lastSub" value="datesub" checked="checked" /> '.&mt('by dates and submissions').'</label>'."\n".
 4115: 	'<label><input type="radio" name="lastSub" value="all" /> '.&mt('all details').' </label>'."\n";
 4116:     $result.='&nbsp;<b>'.&mt('Submissions').': </b>'.$options;
 4117:     
 4118:     $result.=&build_section_inputs();
 4119:     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
 4120:     $result.='<input type="hidden" name="Status"  value="'.$stu_status.'" />'."\n".
 4121: 	'<input type="hidden" name="command" value="displayPage" />'."\n".
 4122: 	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 4123: 	'<input type="hidden" name="saveState" value="'.$env{'form.saveState'}.'" />'."<br />\n";
 4124: 
 4125:     $result.='&nbsp;<b>'.&mt('Use CODE').': </b> <input type="text" name="CODE" value="" /> <br />'."\n";
 4126: 
 4127:     $result.='&nbsp;<input type="button" '.
 4128: 	'onClick="javascript:checkPickOne(this.form);" value="'.&mt('Next').' &rarr;" /><br />'."\n";
 4129: 
 4130:     $request->print($result);
 4131: 
 4132:     my $studentTable.='&nbsp;<b>'.&mt('Select a student you wish to grade and then click on the Next button.').'</b><br />'.
 4133: 	&Apache::loncommon::start_data_table().
 4134: 	&Apache::loncommon::start_data_table_header_row().
 4135: 	'<th align="right">&nbsp;'.&mt('No.').'</th>'.
 4136: 	'<th>'.&nameUserString('header').'</th>'.
 4137: 	'<th align="right">&nbsp;'.&mt('No.').'</th>'.
 4138: 	'<th>'.&nameUserString('header').'</th>'.
 4139: 	&Apache::loncommon::end_data_table_header_row();
 4140:  
 4141:     my (undef,undef,$fullname) = &getclasslist($getsec,'1');
 4142:     my $ptr = 1;
 4143:     foreach my $student (sort 
 4144: 			 {
 4145: 			     if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
 4146: 				 return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
 4147: 			     }
 4148: 			     return $a cmp $b;
 4149: 			 } (keys(%$fullname))) {
 4150: 	my ($uname,$udom) = split(/:/,$student);
 4151: 	$studentTable.=($ptr%2==1 ? &Apache::loncommon::start_data_table_row()
 4152:                                   : '</td>');
 4153: 	$studentTable.='<td align="right">'.$ptr.'&nbsp;</td>';
 4154: 	$studentTable.='<td>&nbsp;<label><input type="radio" name="student" value="'.$student.'" /> '
 4155: 	    .&nameUserString(undef,$$fullname{$student},$uname,$udom)."</label>\n";
 4156: 	$studentTable.=
 4157: 	    ($ptr%2 == 0 ? '</td>'.&Apache::loncommon::end_data_table_row() 
 4158:                          : '');
 4159: 	$ptr++;
 4160:     }
 4161:     if ($ptr%2 == 0) {
 4162: 	$studentTable.='</td><td>&nbsp;</td><td>&nbsp;</td>'.
 4163: 	    &Apache::loncommon::end_data_table_row();
 4164:     }
 4165:     $studentTable.=&Apache::loncommon::end_data_table()."\n";
 4166:     $studentTable.='<input type="button" '.
 4167: 	'onClick="javascript:checkPickOne(this.form);" value="'.&mt('Next').' &rarr;" /></form>'."\n";
 4168: 
 4169:     $studentTable.=&show_grading_menu_form($symb);
 4170:     $request->print($studentTable);
 4171: 
 4172:     return '';
 4173: }
 4174: 
 4175: sub getSymbMap {
 4176:     my $navmap = Apache::lonnavmaps::navmap->new();
 4177: 
 4178:     my %symbx = ();
 4179:     my @titles = ();
 4180:     my $minder = 0;
 4181: 
 4182:     # Gather every sequence that has problems.
 4183:     my @sequences = $navmap->retrieveResources(undef, sub { shift->is_map(); },
 4184: 					       1,0,1);
 4185:     for my $sequence ($navmap->getById('0.0'), @sequences) {
 4186: 	if ($navmap->hasResource($sequence, sub { shift->is_problem(); }, 0) ) {
 4187: 	    my $title = $minder.'.'.
 4188: 		&HTML::Entities::encode($sequence->compTitle(),'"\'&');
 4189: 	    push(@titles, $title); # minder in case two titles are identical
 4190: 	    $symbx{$title} = &HTML::Entities::encode($sequence->symb(),'"\'&');
 4191: 	    $minder++;
 4192: 	}
 4193:     }
 4194:     return \@titles,\%symbx;
 4195: }
 4196: 
 4197: #
 4198: #--- Displays a page/sequence w/wo problems, w/wo submissions
 4199: sub displayPage {
 4200:     my ($request) = shift;
 4201: 
 4202:     my ($symb) = &get_symb($request);
 4203:     my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
 4204:     my $cnum      = $env{"course.$env{'request.course.id'}.num"};
 4205:     my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
 4206:     my $pageTitle = $env{'form.page'};
 4207:     my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
 4208:     my ($uname,$udom) = split(/:/,$env{'form.student'});
 4209:     my $usec=$classlist->{$env{'form.student'}}[5];
 4210: 
 4211:     #need to make sure we have the correct data for later EXT calls, 
 4212:     #thus invalidate the cache
 4213:     &Apache::lonnet::devalidatecourseresdata(
 4214:                  $env{'course.'.$env{'request.course.id'}.'.num'},
 4215:                  $env{'course.'.$env{'request.course.id'}.'.domain'});
 4216:     &Apache::lonnet::clear_EXT_cache_status();
 4217: 
 4218:     if (!&canview($usec)) {
 4219: 	$request->print('<span class="LC_warning">'.&mt('Unable to view requested student. ([_1])',$env{'form.student'}).'</span>');
 4220: 	$request->print(&show_grading_menu_form($symb));
 4221: 	return;
 4222:     }
 4223:     my $result='<h3><span class="LC_info">&nbsp;'.$env{'form.title'}.'</span></h3>';
 4224:     $result.='<h3>&nbsp;'.&mt('Student: [_1]',&nameUserString(undef,$$fullname{$env{'form.student'}},$uname,$udom)).
 4225: 	'</h3>'."\n";
 4226:     $env{'form.CODE'} = uc($env{'form.CODE'});
 4227:     if (&Apache::lonnet::validCODE(uc($env{'form.CODE'}))) {
 4228: 	$result.='<h3>&nbsp;'.&mt('CODE: [_1]',$env{'form.CODE'}).'</h3>'."\n";
 4229:     } else {
 4230: 	delete($env{'form.CODE'});
 4231:     }
 4232:     &sub_page_js($request);
 4233:     $request->print($result);
 4234: 
 4235:     my $navmap = Apache::lonnavmaps::navmap->new();
 4236:     my ($mapUrl, $id, $resUrl)=&Apache::lonnet::decode_symb($env{'form.page'});
 4237:     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
 4238:     if (!$map) {
 4239: 	$request->print('<span class="LC_warning">'.&mt('Unable to view requested sequence. ([_1])',$resUrl).'</span>');
 4240: 	$request->print(&show_grading_menu_form($symb));
 4241: 	return; 
 4242:     }
 4243:     my $iterator = $navmap->getIterator($map->map_start(),
 4244: 					$map->map_finish());
 4245: 
 4246:     my $studentTable='<form action="/adm/grades" method="post" name="gradePage">'."\n".
 4247: 	'<input type="hidden" name="command" value="gradeByPage" />'."\n".
 4248: 	'<input type="hidden" name="fullname" value="'.$$fullname{$env{'form.student'}}.'" />'."\n".
 4249: 	'<input type="hidden" name="student" value="'.$env{'form.student'}.'" />'."\n".
 4250: 	'<input type="hidden" name="page"    value="'.$pageTitle.'" />'."\n".
 4251: 	'<input type="hidden" name="title"   value="'.$env{'form.title'}.'" />'."\n".
 4252: 	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 4253: 	'<input type="hidden" name="overRideScore" value="no" />'."\n".
 4254: 	'<input type="hidden" name="saveState" value="'.$env{'form.saveState'}.'" />'."\n";
 4255: 
 4256:     if (defined($env{'form.CODE'})) {
 4257: 	$studentTable.=
 4258: 	    '<input type="hidden" name="CODE" value="'.$env{'form.CODE'}.'" />'."\n";
 4259:     }
 4260:     my $checkIcon = '<img alt="'.&mt('Check Mark').
 4261: 	'" src="'.&Apache::loncommon::lonhttpdurl($request->dir_config('lonIconsURL').'/check.gif').'" height="16" border="0" />';
 4262: 
 4263:     $studentTable.='&nbsp;'.&mt('<b>Note:</b> Problems graded correct by the computer are marked with a [_1] symbol.',$checkIcon)."\n".
 4264: 	&Apache::loncommon::start_data_table().
 4265: 	&Apache::loncommon::start_data_table_header_row().
 4266: 	'<th align="center">&nbsp;Prob.&nbsp;</th>'.
 4267: 	'<th>&nbsp;'.($env{'form.vProb'} eq 'no' ? &mt('Title') : &mt('Problem Text')).'/'.&mt('Grade').'</th>'.
 4268: 	&Apache::loncommon::end_data_table_header_row();
 4269: 
 4270:     &Apache::lonxml::clear_problem_counter();
 4271:     my ($depth,$question,$prob) = (1,1,1);
 4272:     $iterator->next(); # skip the first BEGIN_MAP
 4273:     my $curRes = $iterator->next(); # for "current resource"
 4274:     while ($depth > 0) {
 4275:         if($curRes == $iterator->BEGIN_MAP) { $depth++; }
 4276:         if($curRes == $iterator->END_MAP) { $depth--; }
 4277: 
 4278:         if (ref($curRes) && $curRes->is_problem()) {
 4279: 	    my $parts = $curRes->parts();
 4280:             my $title = $curRes->compTitle();
 4281: 	    my $symbx = $curRes->symb();
 4282: 	    $studentTable.=
 4283: 		&Apache::loncommon::start_data_table_row().
 4284: 		'<td align="center" valign="top" >'.$prob.
 4285: 		(scalar(@{$parts}) == 1 ? '' 
 4286: 		                        : '<br />('.&mt('[_1]&nbsp;parts)',
 4287: 							scalar(@{$parts}))
 4288: 		 ).
 4289: 		 '</td>';
 4290: 	    $studentTable.='<td valign="top">';
 4291: 	    my %form = ('CODE' => $env{'form.CODE'},);
 4292: 	    if ($env{'form.vProb'} eq 'yes' ) {
 4293: 		$studentTable.=&show_problem($request,$symbx,$uname,$udom,1,
 4294: 					     undef,'both',\%form);
 4295: 	    } else {
 4296: 		my $companswer = &Apache::loncommon::get_student_answers($symbx,$uname,$udom,$env{'request.course.id'},%form);
 4297: 		$companswer =~ s|<form(.*?)>||g;
 4298: 		$companswer =~ s|</form>||g;
 4299: #		while ($companswer =~ /(<a href\=\"javascript:newWindow.*?Script Vars<\/a>)/s) { #<a href="javascript:newWindow</a>
 4300: #		    $companswer =~ s/$1/ /ms;
 4301: #		    $request->print('match='.$1."<br />\n");
 4302: #		}
 4303: #		$companswer =~ s|<table border=\"1\">|<table border=\"0\">|g;
 4304: 		$studentTable.='&nbsp;<b>'.$title.'</b>&nbsp;<br />&nbsp;<b>'.&mt('Correct answer').':</b><br />'.$companswer;
 4305: 	    }
 4306: 
 4307: 	    my %record = &Apache::lonnet::restore($symbx,$env{'request.course.id'},$udom,$uname);
 4308: 
 4309: 	    if ($env{'form.lastSub'} eq 'datesub') {
 4310: 		if ($record{'version'} eq '') {
 4311: 		    $studentTable.='<br />&nbsp;<span class="LC_warning">'.&mt('No recorded submission for this problem.').'</span><br />';
 4312: 		} else {
 4313: 		    my %responseType = ();
 4314: 		    foreach my $partid (@{$parts}) {
 4315: 			my @responseIds =$curRes->responseIds($partid);
 4316: 			my @responseType =$curRes->responseType($partid);
 4317: 			my %responseIds;
 4318: 			for (my $i=0;$i<=$#responseIds;$i++) {
 4319: 			    $responseIds{$responseIds[$i]}=$responseType[$i];
 4320: 			}
 4321: 			$responseType{$partid} = \%responseIds;
 4322: 		    }
 4323: 		    $studentTable.= &displaySubByDates($symbx,\%record,$parts,\%responseType,$checkIcon,$uname,$udom);
 4324: 
 4325: 		}
 4326: 	    } elsif ($env{'form.lastSub'} eq 'all') {
 4327: 		my $last = ($env{'form.lastSub'} eq 'last' ? 'last' : '');
 4328: 		$studentTable.=&Apache::loncommon::get_previous_attempt($symbx,$uname,$udom,
 4329: 									$env{'request.course.id'},
 4330: 									'','.submission');
 4331:  
 4332: 	    }
 4333: 	    if (&canmodify($usec)) {
 4334: 		foreach my $partid (@{$parts}) {
 4335: 		    $studentTable.=&gradeBox($request,$symbx,$uname,$udom,$question,$partid,\%record);
 4336: 		    $studentTable.='<input type="hidden" name="q_'.$question.'" value="'.$partid.'" />'."\n";
 4337: 		    $question++;
 4338: 		}
 4339: 		$prob++;
 4340: 	    }
 4341: 	    $studentTable.='</td></tr>';
 4342: 
 4343: 	}
 4344:         $curRes = $iterator->next();
 4345:     }
 4346: 
 4347:     $studentTable.='</table>'."\n".
 4348: 	'<input type="button" value="'.&mt('Save').'" '.
 4349: 	'onClick="javascript:checkSubmitPage(this.form,'.$question.');" />'.
 4350: 	'</form>'."\n";
 4351:     $studentTable.=&show_grading_menu_form($symb);
 4352:     $request->print($studentTable);
 4353: 
 4354:     return '';
 4355: }
 4356: 
 4357: sub displaySubByDates {
 4358:     my ($symb,$record,$parts,$responseType,$checkIcon,$uname,$udom) = @_;
 4359:     my $isCODE=0;
 4360:     my $isTask = ($symb =~/\.task$/);
 4361:     if (exists($record->{'resource.CODE'})) { $isCODE=1; }
 4362:     my $studentTable=&Apache::loncommon::start_data_table().
 4363: 	&Apache::loncommon::start_data_table_header_row().
 4364: 	'<th>'.&mt('Date/Time').'</th>'.
 4365: 	($isCODE?'<th>'.&mt('CODE').'</th>':'').
 4366: 	'<th>'.&mt('Submission').'</th>'.
 4367: 	'<th>'.&mt('Status').'</th>'.
 4368: 	&Apache::loncommon::end_data_table_header_row();
 4369:     my ($version);
 4370:     my %mark;
 4371:     my %orders;
 4372:     $mark{'correct_by_student'} = $checkIcon;
 4373:     if (!exists($$record{'1:timestamp'})) {
 4374: 	return '<br />&nbsp;<span class="LC_warning">'.&mt('Nothing submitted - no attempts.').'</span><br />';
 4375:     }
 4376: 
 4377:     my $interaction;
 4378:     my $no_increment = 1;
 4379:     for ($version=1;$version<=$$record{'version'};$version++) {
 4380: 	my $timestamp = 
 4381: 	    &Apache::lonlocal::locallocaltime($$record{$version.':timestamp'});
 4382: 	if (exists($$record{$version.':resource.0.version'})) {
 4383: 	    $interaction = $$record{$version.':resource.0.version'};
 4384: 	}
 4385: 
 4386: 	my $where = ($isTask ? "$version:resource.$interaction"
 4387: 		             : "$version:resource");
 4388: 	$studentTable.=&Apache::loncommon::start_data_table_row().
 4389: 	    '<td>'.$timestamp.'</td>';
 4390: 	if ($isCODE) {
 4391: 	    $studentTable.='<td>'.$record->{$version.':resource.CODE'}.'</td>';
 4392: 	}
 4393: 	my @versionKeys = split(/\:/,$$record{$version.':keys'});
 4394: 	my @displaySub = ();
 4395: 	foreach my $partid (@{$parts}) {
 4396: 	    my @matchKey = ($isTask ? sort(grep /^resource\.\d+\.\Q$partid\E\.award$/,@versionKeys)
 4397: 			            : sort(grep /^resource\.\Q$partid\E\..*?\.submission$/,@versionKeys));
 4398: 	    
 4399: 
 4400: #	    next if ($$record{"$version:resource.$partid.solved"} eq '');
 4401: 	    my $display_part=&get_display_part($partid,$symb);
 4402: 	    foreach my $matchKey (@matchKey) {
 4403: 		if (exists($$record{$version.':'.$matchKey}) &&
 4404: 		    $$record{$version.':'.$matchKey} ne '') {
 4405: 
 4406: 		    my ($responseId)= ($isTask ? ($matchKey=~ /^resource\.(.*?)\.\Q$partid\E\.award$/)
 4407: 				               : ($matchKey=~ /^resource\.\Q$partid\E\.(.*?)\.submission$/));
 4408: 		    $displaySub[0].='<b>'.&mt('Part:').'</b>&nbsp;'.$display_part.'&nbsp;';
 4409: 		    $displaySub[0].='<span class="LC_internal_info">('.&mt('ID').'&nbsp;'.
 4410: 			$responseId.')</span>&nbsp;<b>';
 4411: 		    if ($$record{"$where.$partid.tries"} eq '') {
 4412: 			$displaySub[0].=&mt('Trial&nbsp;not&nbsp;counted');
 4413: 		    } else {
 4414: 			$displaySub[0].=&mt('Trial&nbsp;[_1]',
 4415: 					    $$record{"$where.$partid.tries"});
 4416: 		    }
 4417: 		    my $responseType=($isTask ? 'Task'
 4418:                                               : $responseType->{$partid}->{$responseId});
 4419: 		    if (!exists($orders{$partid})) { $orders{$partid}={}; }
 4420: 		    if (!exists($orders{$partid}->{$responseId})) {
 4421: 			$orders{$partid}->{$responseId}=
 4422: 			    &get_order($partid,$responseId,$symb,$uname,$udom,
 4423:                                        $no_increment);
 4424: 		    }
 4425: 		    $displaySub[0].='</b>&nbsp; '.
 4426: 			&cleanRecord($$record{$version.':'.$matchKey},$responseType,$symb,$partid,$responseId,$record,$orders{$partid}->{$responseId},"$version:",$uname,$udom).'<br />';
 4427: 		}
 4428: 	    }
 4429: 	    if (exists($$record{"$where.$partid.checkedin"})) {
 4430: 		$displaySub[1].=&mt('Checked in by [_1] into slot [_2]',
 4431: 				    $$record{"$where.$partid.checkedin"},
 4432: 				    $$record{"$where.$partid.checkedin.slot"}).
 4433: 					'<br />';
 4434: 	    }
 4435: 	    if (exists $$record{"$where.$partid.award"}) {
 4436: 		$displaySub[1].='<b>'.&mt('Part:').'</b>&nbsp;'.$display_part.' &nbsp;'.
 4437: 		    lc($$record{"$where.$partid.award"}).' '.
 4438: 		    $mark{$$record{"$where.$partid.solved"}}.
 4439: 		    '<br />';
 4440: 	    }
 4441: 	    if (exists $$record{"$where.$partid.regrader"}) {
 4442: 		$displaySub[2].=$$record{"$where.$partid.regrader"}.
 4443: 		    ' (<b>'.&mt('Part').':</b> '.$display_part.')';
 4444: 	    } elsif ($$record{"$version:resource.$partid.regrader"} =~ /\S/) {
 4445: 		$displaySub[2].=
 4446: 		    $$record{"$version:resource.$partid.regrader"}.
 4447: 		    ' (<b>'.&mt('Part').':</b> '.$display_part.')';
 4448: 	    }
 4449: 	}
 4450: 	# needed because old essay regrader has not parts info
 4451: 	if (exists $$record{"$version:resource.regrader"}) {
 4452: 	    $displaySub[2].=$$record{"$version:resource.regrader"};
 4453: 	}
 4454: 	$studentTable.='<td>'.$displaySub[0].'&nbsp;</td><td>'.$displaySub[1];
 4455: 	if ($displaySub[2]) {
 4456: 	    $studentTable.=&mt('Manually graded by [_1]',$displaySub[2]);
 4457: 	}
 4458: 	$studentTable.='&nbsp;</td>'.
 4459: 	    &Apache::loncommon::end_data_table_row();
 4460:     }
 4461:     $studentTable.=&Apache::loncommon::end_data_table();
 4462:     return $studentTable;
 4463: }
 4464: 
 4465: sub updateGradeByPage {
 4466:     my ($request) = shift;
 4467: 
 4468:     my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
 4469:     my $cnum      = $env{"course.$env{'request.course.id'}.num"};
 4470:     my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
 4471:     my $pageTitle = $env{'form.page'};
 4472:     my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
 4473:     my ($uname,$udom) = split(/:/,$env{'form.student'});
 4474:     my $usec=$classlist->{$env{'form.student'}}[5];
 4475:     if (!&canmodify($usec)) {
 4476: 	$request->print('<span class="LC_warning">'.&mt('Unable to modify requested student ([_1])',$env{'form.student'}).'</span>');
 4477: 	$request->print(&show_grading_menu_form($env{'form.symb'}));
 4478: 	return;
 4479:     }
 4480:     my $result='<h3><span class="LC_info">&nbsp;'.$env{'form.title'}.'</span></h3>';
 4481:     $result.='<h3>&nbsp;'.&mt('Student: ').&nameUserString(undef,$env{'form.fullname'},$uname,$udom).
 4482: 	'</h3>'."\n";
 4483: 
 4484:     $request->print($result);
 4485: 
 4486:     my $navmap = Apache::lonnavmaps::navmap->new();
 4487:     my ($mapUrl, $id, $resUrl) = &Apache::lonnet::decode_symb( $env{'form.page'});
 4488:     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
 4489:     if (!$map) {
 4490: 	$request->print('<span class="LC_warning">'.&mt('Unable to grade requested sequence ([_1]).',$resUrl).'</span>');
 4491: 	my ($symb)=&get_symb($request);
 4492: 	$request->print(&show_grading_menu_form($symb));
 4493: 	return; 
 4494:     }
 4495:     my $iterator = $navmap->getIterator($map->map_start(),
 4496: 					$map->map_finish());
 4497: 
 4498:     my $studentTable=
 4499: 	&Apache::loncommon::start_data_table().
 4500: 	&Apache::loncommon::start_data_table_header_row().
 4501: 	'<th align="center">&nbsp;'.&mt('Prob.').'&nbsp;</th>'.
 4502: 	'<th>&nbsp;'.&mt('Title').'&nbsp;</th>'.
 4503: 	'<th>&nbsp;'.&mt('Previous Score').'&nbsp;</th>'.
 4504: 	'<th>&nbsp;'.&mt('New Score').'&nbsp;</th>'.
 4505: 	&Apache::loncommon::end_data_table_header_row();
 4506: 
 4507:     $iterator->next(); # skip the first BEGIN_MAP
 4508:     my $curRes = $iterator->next(); # for "current resource"
 4509:     my ($depth,$question,$prob,$changeflag)= (1,1,1,0);
 4510:     while ($depth > 0) {
 4511:         if($curRes == $iterator->BEGIN_MAP) { $depth++; }
 4512:         if($curRes == $iterator->END_MAP) { $depth--; }
 4513: 
 4514:         if (ref($curRes) && $curRes->is_problem()) {
 4515: 	    my $parts = $curRes->parts();
 4516:             my $title = $curRes->compTitle();
 4517: 	    my $symbx = $curRes->symb();
 4518: 	    $studentTable.=
 4519: 		&Apache::loncommon::start_data_table_row().
 4520: 		'<td align="center" valign="top" >'.$prob.
 4521: 		(scalar(@{$parts}) == 1 ? '' 
 4522:                                         : '<br />('.&mt('[quant,_1,&nbsp;part]',scalar(@{$parts}))
 4523: 		.')').'</td>';
 4524: 	    $studentTable.='<td valign="top">&nbsp;<b>'.$title.'</b>&nbsp;</td>';
 4525: 
 4526: 	    my %newrecord=();
 4527: 	    my @displayPts=();
 4528:             my %aggregate = ();
 4529:             my $aggregateflag = 0;
 4530: 	    foreach my $partid (@{$parts}) {
 4531: 		my $newpts = $env{'form.GD_BOX'.$question.'_'.$partid};
 4532: 		my $oldpts = $env{'form.oldpts'.$question.'_'.$partid};
 4533: 
 4534: 		my $wgt = $env{'form.WGT'.$question.'_'.$partid} != 0 ? 
 4535: 		    $env{'form.WGT'.$question.'_'.$partid} : 1;
 4536: 		my $partial = $newpts/$wgt;
 4537: 		my $score;
 4538: 		if ($partial > 0) {
 4539: 		    $score = 'correct_by_override';
 4540: 		} elsif ($newpts ne '') { #empty is taken as 0
 4541: 		    $score = 'incorrect_by_override';
 4542: 		}
 4543: 		my $dropMenu = $env{'form.GD_SEL'.$question.'_'.$partid};
 4544: 		if ($dropMenu eq 'excused') {
 4545: 		    $partial = '';
 4546: 		    $score = 'excused';
 4547: 		} elsif ($dropMenu eq 'reset status'
 4548: 			 && $env{'form.solved'.$question.'_'.$partid} ne '') { #update only if previous record exists
 4549: 		    $newrecord{'resource.'.$partid.'.tries'} = 0;
 4550: 		    $newrecord{'resource.'.$partid.'.solved'} = '';
 4551: 		    $newrecord{'resource.'.$partid.'.award'} = '';
 4552: 		    $newrecord{'resource.'.$partid.'.awarded'} = 0;
 4553: 		    $newrecord{'resource.'.$partid.'.regrader'} = "$env{'user.name'}:$env{'user.domain'}";
 4554: 		    $changeflag++;
 4555: 		    $newpts = '';
 4556:                     
 4557:                     my $aggtries =  $env{'form.aggtries'.$question.'_'.$partid};
 4558:                     my $totaltries = $env{'form.totaltries'.$question.'_'.$partid};
 4559:                     my $solvedstatus = $env{'form.solved'.$question.'_'.$partid};
 4560:                     if ($aggtries > 0) {
 4561:                         &decrement_aggs($symbx,$partid,\%aggregate,$aggtries,$totaltries,$solvedstatus);
 4562:                         $aggregateflag = 1;
 4563:                     }
 4564: 		}
 4565: 		my $display_part=&get_display_part($partid,$curRes->symb());
 4566: 		my $oldstatus = $env{'form.solved'.$question.'_'.$partid};
 4567: 		$displayPts[0].='&nbsp;<b>'.&mt('Part').':</b> '.$display_part.' = '.
 4568: 		    (($oldstatus eq 'excused') ? 'excused' : $oldpts).
 4569: 		    '&nbsp;<br />';
 4570: 		$displayPts[1].='&nbsp;<b>'.&mt('Part').':</b> '.$display_part.' = '.
 4571: 		     (($score eq 'excused') ? 'excused' : $newpts).
 4572: 		    '&nbsp;<br />';
 4573: 		$question++;
 4574: 		next if ($dropMenu eq 'reset status' || ($newpts eq $oldpts && $score ne 'excused'));
 4575: 
 4576: 		$newrecord{'resource.'.$partid.'.awarded'}  = $partial if $partial ne '';
 4577: 		$newrecord{'resource.'.$partid.'.solved'}   = $score if $score ne '';
 4578: 		$newrecord{'resource.'.$partid.'.regrader'} = "$env{'user.name'}:$env{'user.domain'}"
 4579: 		    if (scalar(keys(%newrecord)) > 0);
 4580: 
 4581: 		$changeflag++;
 4582: 	    }
 4583: 	    if (scalar(keys(%newrecord)) > 0) {
 4584: 		my %record = 
 4585: 		    &Apache::lonnet::restore($symbx,$env{'request.course.id'},
 4586: 					     $udom,$uname);
 4587: 
 4588: 		if (&Apache::lonnet::validCODE($env{'form.CODE'})) {
 4589: 		    $newrecord{'resource.CODE'} = $env{'form.CODE'};
 4590: 		} elsif (&Apache::lonnet::validCODE($record{'resource.CODE'})) {
 4591: 		    $newrecord{'resource.CODE'} = '';
 4592: 		}
 4593: 		&Apache::lonnet::cstore(\%newrecord,$symbx,$env{'request.course.id'},
 4594: 					$udom,$uname);
 4595: 		%record = &Apache::lonnet::restore($symbx,
 4596: 						   $env{'request.course.id'},
 4597: 						   $udom,$uname);
 4598: 		&check_and_remove_from_queue($parts,\%record,undef,$symbx,
 4599: 					     $cdom,$cnum,$udom,$uname);
 4600: 	    }
 4601: 	    
 4602:             if ($aggregateflag) {
 4603:                 &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
 4604:                       $env{'course.'.$env{'request.course.id'}.'.domain'},
 4605:                       $env{'course.'.$env{'request.course.id'}.'.num'});
 4606:             }
 4607: 
 4608: 	    $studentTable.='<td valign="top">'.$displayPts[0].'</td>'.
 4609: 		'<td valign="top">'.$displayPts[1].'</td>'.
 4610: 		&Apache::loncommon::end_data_table_row();
 4611: 
 4612: 	    $prob++;
 4613: 	}
 4614:         $curRes = $iterator->next();
 4615:     }
 4616: 
 4617:     $studentTable.=&Apache::loncommon::end_data_table();
 4618:     $studentTable.=&show_grading_menu_form($env{'form.symb'});
 4619:     my $grademsg=($changeflag == 0 ? &mt('No score was changed or updated.') :
 4620: 		  &mt('The scores were changed for [quant,_1,problem].',
 4621: 		  $changeflag));
 4622:     $request->print($grademsg.$studentTable);
 4623: 
 4624:     return '';
 4625: }
 4626: 
 4627: #-------- end of section for handling grading by page/sequence ---------
 4628: #
 4629: #-------------------------------------------------------------------
 4630: 
 4631: #--------------------Scantron Grading-----------------------------------
 4632: #
 4633: #------ start of section for handling grading by page/sequence ---------
 4634: 
 4635: =pod
 4636: 
 4637: =head1 Bubble sheet grading routines
 4638: 
 4639:   For this documentation:
 4640: 
 4641:    'scanline' refers to the full line of characters
 4642:    from the file that we are parsing that represents one entire sheet
 4643: 
 4644:    'bubble line' refers to the data
 4645:    representing the line of bubbles that are on the physical bubble sheet
 4646: 
 4647: 
 4648: The overall process is that a scanned in bubble sheet data is uploaded
 4649: into a course. When a user wants to grade, they select a
 4650: sequence/folder of resources, a file of bubble sheet info, and pick
 4651: one of the predefined configurations for what each scanline looks
 4652: like.
 4653: 
 4654: Next each scanline is checked for any errors of either 'missing
 4655: bubbles' (it's an error because it may have been mis-scanned
 4656: because too light bubbling), 'double bubble' (each bubble line should
 4657: have no more that one letter picked), invalid or duplicated CODE,
 4658: invalid student ID
 4659: 
 4660: If the CODE option is used that determines the randomization of the
 4661: homework problems, either way the student ID is looked up into a
 4662: username:domain.
 4663: 
 4664: During the validation phase the instructor can choose to skip scanlines. 
 4665: 
 4666: After the validation phase, there are now 3 bubble sheet files
 4667: 
 4668:   scantron_original_filename (unmodified original file)
 4669:   scantron_corrected_filename (file where the corrected information has replaced the original information)
 4670:   scantron_skipped_filename (contains the exact text of scanlines that where skipped)
 4671: 
 4672: Also there is a separate hash nohist_scantrondata that contains extra
 4673: correction information that isn't representable in the bubble sheet
 4674: file (see &scantron_getfile() for more information)
 4675: 
 4676: After all scanlines are either valid, marked as valid or skipped, then
 4677: foreach line foreach problem in the picked sequence, an ssi request is
 4678: made that simulates a user submitting their selected letter(s) against
 4679: the homework problem.
 4680: 
 4681: =over 4
 4682: 
 4683: 
 4684: 
 4685: =item defaultFormData
 4686: 
 4687:   Returns html hidden inputs used to hold context/default values.
 4688: 
 4689:  Arguments:
 4690:   $symb - $symb of the current resource 
 4691: 
 4692: =cut
 4693: 
 4694: sub defaultFormData {
 4695:     my ($symb)=@_;
 4696:     return '<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 4697:      '<input type="hidden" name="saveState" value="'.$env{'form.saveState'}.'" />'."\n".
 4698:      '<input type="hidden" name="probTitle" value="'.$env{'form.probTitle'}.'" />'."\n";
 4699: }
 4700: 
 4701: 
 4702: =pod 
 4703: 
 4704: =item getSequenceDropDown
 4705: 
 4706:    Return html dropdown of possible sequences to grade
 4707:  
 4708:  Arguments:
 4709:    $symb - $symb of the current resource 
 4710: 
 4711: =cut
 4712: 
 4713: sub getSequenceDropDown {
 4714:     my ($symb)=@_;
 4715:     my $result='<select name="selectpage">'."\n";
 4716:     my ($titles,$symbx) = &getSymbMap();
 4717:     my ($curpage)=&Apache::lonnet::decode_symb($symb); 
 4718:     my $ctr=0;
 4719:     foreach (@$titles) {
 4720: 	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
 4721: 	$result.='<option value="'.$$symbx{$_}.'" '.
 4722: 	    ($$symbx{$_} =~ /$curpage$/ ? 'selected="selected"' : '').
 4723: 	    '>'.$showtitle.'</option>'."\n";
 4724: 	$ctr++;
 4725:     }
 4726:     $result.= '</select>';
 4727:     return $result;
 4728: }
 4729: 
 4730: my %bubble_lines_per_response;     # no. bubble lines for each response.
 4731:                                    # index is "symb.part_id"
 4732: 
 4733: my %first_bubble_line;             # First bubble line no. for each bubble.
 4734: 
 4735: my %subdivided_bubble_lines;       # no. bubble lines for optionresponse, 
 4736:                                    # matchresponse or rankresponse, where 
 4737:                                    # an individual response can have multiple 
 4738:                                    # lines
 4739: 
 4740: my %responsetype_per_response;     # responsetype for each response
 4741: 
 4742: # Save and restore the bubble lines array to the form env.
 4743: 
 4744: 
 4745: sub save_bubble_lines {
 4746:     foreach my $line (keys(%bubble_lines_per_response)) {
 4747: 	$env{"form.scantron.bubblelines.$line"}  = $bubble_lines_per_response{$line};
 4748: 	$env{"form.scantron.first_bubble_line.$line"} =
 4749: 	    $first_bubble_line{$line};
 4750:         $env{"form.scantron.sub_bubblelines.$line"} = 
 4751:             $subdivided_bubble_lines{$line};
 4752:         $env{"form.scantron.responsetype.$line"} =
 4753:             $responsetype_per_response{$line};
 4754:     }
 4755: }
 4756: 
 4757: 
 4758: sub restore_bubble_lines {
 4759:     my $line = 0;
 4760:     %bubble_lines_per_response = ();
 4761:     while ($env{"form.scantron.bubblelines.$line"}) {
 4762: 	my $value = $env{"form.scantron.bubblelines.$line"};
 4763: 	$bubble_lines_per_response{$line} = $value;
 4764: 	$first_bubble_line{$line}  =
 4765: 	    $env{"form.scantron.first_bubble_line.$line"};
 4766:         $subdivided_bubble_lines{$line} =
 4767:             $env{"form.scantron.sub_bubblelines.$line"};
 4768:         $responsetype_per_response{$line} =
 4769:             $env{"form.scantron.responsetype.$line"};
 4770: 	$line++;
 4771:     }
 4772: 
 4773: }
 4774: 
 4775: #  Given the parsed scanline, get the response for 
 4776: #  'answer' number n:
 4777: 
 4778: sub get_response_bubbles {
 4779:     my ($parsed_line, $response)  = @_;
 4780: 
 4781: 
 4782:     my $bubble_line = $first_bubble_line{$response-1} +1;
 4783:     my $bubble_lines= $bubble_lines_per_response{$response-1};
 4784:     
 4785:     my $selected = "";
 4786: 
 4787:     for (my $bline = 0; $bline < $bubble_lines; $bline++) {
 4788: 	$selected .= $$parsed_line{"scantron.$bubble_line.answer"}.":";
 4789: 	$bubble_line++;
 4790:     }
 4791:     return $selected;
 4792: }
 4793: 
 4794: =pod 
 4795: 
 4796: =item scantron_filenames
 4797: 
 4798:    Returns a list of the scantron files in the current course 
 4799: 
 4800: =cut
 4801: 
 4802: sub scantron_filenames {
 4803:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 4804:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 4805:     my $getpropath = 1;
 4806:     my @files=&Apache::lonnet::dirlist('userfiles',$cdom,$cname,
 4807:                                        $getpropath);
 4808:     my @possiblenames;
 4809:     foreach my $filename (sort(@files)) {
 4810: 	($filename)=split(/&/,$filename);
 4811: 	if ($filename!~/^scantron_orig_/) { next ; }
 4812: 	$filename=~s/^scantron_orig_//;
 4813: 	push(@possiblenames,$filename);
 4814:     }
 4815:     return @possiblenames;
 4816: }
 4817: 
 4818: =pod 
 4819: 
 4820: =item scantron_uploads
 4821: 
 4822:    Returns  html drop-down list of scantron files in current course.
 4823: 
 4824:  Arguments:
 4825:    $file2grade - filename to set as selected in the dropdown
 4826: 
 4827: =cut
 4828: 
 4829: sub scantron_uploads {
 4830:     my ($file2grade) = @_;
 4831:     my $result=	'<select name="scantron_selectfile">';
 4832:     $result.="<option></option>";
 4833:     foreach my $filename (sort(&scantron_filenames())) {
 4834: 	$result.="<option".($filename eq $file2grade ? ' selected="selected"':'').">$filename</option>\n";
 4835:     }
 4836:     $result.="</select>";
 4837:     return $result;
 4838: }
 4839: 
 4840: =pod 
 4841: 
 4842: =item scantron_scantab
 4843: 
 4844:   Returns html drop down of the scantron formats in the scantronformat.tab
 4845:   file.
 4846: 
 4847: =cut
 4848: 
 4849: sub scantron_scantab {
 4850:     my $result='<select name="scantron_format">'."\n";
 4851:     $result.='<option></option>'."\n";
 4852:     my @lines = &get_scantronformat_file();
 4853:     if (@lines > 0) {
 4854:         foreach my $line (@lines) {
 4855:             next if (($line =~ /^\#/) || ($line eq ''));
 4856: 	    my ($name,$descrip)=split(/:/,$line);
 4857: 	    $result.='<option value="'.$name.'">'.$descrip.'</option>'."\n";
 4858:         }
 4859:     }
 4860:     $result.='</select>'."\n";
 4861:     return $result;
 4862: }
 4863: 
 4864: =pod
 4865: 
 4866: =item get_scantronformat_file
 4867: 
 4868:   Returns an array containing lines from the scantron format file for
 4869:   the domain of the course.
 4870: 
 4871:   If a url for a custom.tab file is listed in domain's configuration.db, 
 4872:   lines are from this file.
 4873: 
 4874:   Otherwise, if a default.tab has been published in RES space by the 
 4875:   domainconfig user, lines are from this file.
 4876: 
 4877:   Otherwise, fall back to getting lines from the legacy file on the
 4878:   local server:  /home/httpd/lonTabs/default_scantronformat.tab    
 4879: 
 4880: =cut
 4881: 
 4882: sub get_scantronformat_file {
 4883:     my $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
 4884:     my %domconfig = &Apache::lonnet::get_dom('configuration',['scantron'],$cdom);
 4885:     my $gottab = 0;
 4886:     my @lines;
 4887:     if (ref($domconfig{'scantron'}) eq 'HASH') {
 4888:         if ($domconfig{'scantron'}{'scantronformat'} ne '') {
 4889:             my $formatfile = &Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonDocRoot'}.$domconfig{'scantron'}{'scantronformat'});
 4890:             if ($formatfile ne '-1') {
 4891:                 @lines = split("\n",$formatfile,-1);
 4892:                 $gottab = 1;
 4893:             }
 4894:         }
 4895:     }
 4896:     if (!$gottab) {
 4897:         my $confname = $cdom.'-domainconfig';
 4898:         my $default = $Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'.$cdom.'/'.$confname.'/default.tab';
 4899:         my $formatfile =  &Apache::lonnet::getfile($default);
 4900:         if ($formatfile ne '-1') {
 4901:             @lines = split("\n",$formatfile,-1);
 4902:             $gottab = 1;
 4903:         }
 4904:     }
 4905:     if (!$gottab) {
 4906:         my @domains = &Apache::lonnet::current_machine_domains();
 4907:         if (grep(/^\Q$cdom\E$/,@domains)) {
 4908:             my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
 4909:             @lines = <$fh>;
 4910:             close($fh);
 4911:         } else {
 4912:             my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/default_scantronformat.tab');
 4913:             @lines = <$fh>;
 4914:             close($fh);
 4915:         }
 4916:     }
 4917:     return @lines;
 4918: }
 4919: 
 4920: =pod 
 4921: 
 4922: =item scantron_CODElist
 4923: 
 4924:   Returns html drop down of the saved CODE lists from current course,
 4925:   generated from earlier printings.
 4926: 
 4927: =cut
 4928: 
 4929: sub scantron_CODElist {
 4930:     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
 4931:     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
 4932:     my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
 4933:     my $namechoice='<option></option>';
 4934:     foreach my $name (sort {uc($a) cmp uc($b)} @names) {
 4935: 	if ($name =~ /^error: 2 /) { next; }
 4936: 	if ($name =~ /^type\0/) { next; }
 4937: 	$namechoice.='<option value="'.$name.'">'.$name.'</option>';
 4938:     }
 4939:     $namechoice='<select name="scantron_CODElist">'.$namechoice.'</select>';
 4940:     return $namechoice;
 4941: }
 4942: 
 4943: =pod 
 4944: 
 4945: =item scantron_CODEunique
 4946: 
 4947:   Returns the html for "Each CODE to be used once" radio.
 4948: 
 4949: =cut
 4950: 
 4951: sub scantron_CODEunique {
 4952:     my $result='<span class="LC_nobreak">
 4953:                  <label><input type="radio" name="scantron_CODEunique"
 4954:                         value="yes" checked="checked" />'.&mt('Yes').' </label>
 4955:                 </span>
 4956:                 <span class="LC_nobreak">
 4957:                  <label><input type="radio" name="scantron_CODEunique"
 4958:                         value="no" />'.&mt('No').' </label>
 4959:                 </span>';
 4960:     return $result;
 4961: }
 4962: 
 4963: =pod 
 4964: 
 4965: =item scantron_selectphase
 4966: 
 4967:   Generates the initial screen to start the bubble sheet process.
 4968:   Allows for - starting a grading run.
 4969:              - downloading existing scan data (original, corrected
 4970:                                                 or skipped info)
 4971: 
 4972:              - uploading new scan data
 4973: 
 4974:  Arguments:
 4975:   $r          - The Apache request object
 4976:   $file2grade - name of the file that contain the scanned data to score
 4977: 
 4978: =cut
 4979: 
 4980: sub scantron_selectphase {
 4981:     my ($r,$file2grade) = @_;
 4982:     my ($symb)=&get_symb($r);
 4983:     if (!$symb) {return '';}
 4984:     my $sequence_selector=&getSequenceDropDown($symb);
 4985:     my $default_form_data=&defaultFormData($symb);
 4986:     my $grading_menu_button=&show_grading_menu_form($symb);
 4987:     my $file_selector=&scantron_uploads($file2grade);
 4988:     my $format_selector=&scantron_scantab();
 4989:     my $CODE_selector=&scantron_CODElist();
 4990:     my $CODE_unique=&scantron_CODEunique();
 4991:     my $result;
 4992: 
 4993:     $ssi_error = 0;
 4994: 
 4995:     # Chunk of form to prompt for a file to grade and how:
 4996: 
 4997:     $result.= '
 4998:     <br />
 4999:     <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantron_process">
 5000:     <input type="hidden" name="command" value="scantron_warning" />
 5001:     '.$default_form_data.'
 5002:     '.&Apache::loncommon::start_data_table('LC_scantron_action').'
 5003:        '.&Apache::loncommon::start_data_table_header_row().'
 5004:             <th colspan="2">
 5005:               &nbsp;'.&mt('Specify file and which Folder/Sequence to grade').'
 5006:             </th>
 5007:        '.&Apache::loncommon::end_data_table_header_row().'
 5008:        '.&Apache::loncommon::start_data_table_row().'
 5009:             <td> '.&mt('Sequence to grade:').' </td><td> '.$sequence_selector.' </td>
 5010:        '.&Apache::loncommon::end_data_table_row().'
 5011:        '.&Apache::loncommon::start_data_table_row().'
 5012:             <td> '.&mt('Filename of scoring office file:').' </td><td> '.$file_selector.' </td>
 5013:        '.&Apache::loncommon::end_data_table_row().'
 5014:        '.&Apache::loncommon::start_data_table_row().'
 5015:             <td> '.&mt('Format of data file:').' </td><td> '.$format_selector.' </td>
 5016:        '.&Apache::loncommon::end_data_table_row().'
 5017:        '.&Apache::loncommon::start_data_table_row().'
 5018:             <td> '.&mt('Saved CODEs to validate against:').' </td><td> '.$CODE_selector.' </td>
 5019:        '.&Apache::loncommon::end_data_table_row().'
 5020:        '.&Apache::loncommon::start_data_table_row().'
 5021:             <td> '.&mt('Each CODE is only to be used once:').'</td><td> '.$CODE_unique.' </td>
 5022:        '.&Apache::loncommon::end_data_table_row().'
 5023:        '.&Apache::loncommon::start_data_table_row().'
 5024: 	    <td> '.&mt('Options:').' </td>
 5025:             <td>
 5026: 	       <label><input type="checkbox" name="scantron_options_redo" value="redo_skipped"/> '.&mt('Do only previously skipped records').'</label> <br />
 5027:                <label><input type="checkbox" name="scantron_options_ignore" value="ignore_corrections"/> '.&mt('Remove all existing corrections').'</label> <br />
 5028:                <label><input type="checkbox" name="scantron_options_hidden" value="ignore_hidden"/> '.&mt('Skip hidden resources when grading').'</label>
 5029: 	    </td>
 5030:        '.&Apache::loncommon::end_data_table_row().'
 5031:        '.&Apache::loncommon::start_data_table_row().'
 5032:             <td colspan="2">
 5033:               <input type="submit" value="'.&mt('Grading: Validate Scantron Records').'" />
 5034:             </td>
 5035:        '.&Apache::loncommon::end_data_table_row().'
 5036:     '.&Apache::loncommon::end_data_table().'
 5037:     </form>
 5038: ';
 5039:    
 5040:     $r->print($result);
 5041: 
 5042:     if (&Apache::lonnet::allowed('usc',$env{'request.role.domain'}) ||
 5043:         &Apache::lonnet::allowed('usc',$env{'request.course.id'})) {
 5044: 
 5045: 	# Chunk of form to prompt for a scantron file upload.
 5046: 
 5047:         $r->print('
 5048:     <br />
 5049:     '.&Apache::loncommon::start_data_table('LC_scantron_action').'
 5050:        '.&Apache::loncommon::start_data_table_header_row().'
 5051:             <th>
 5052:               &nbsp;'.&mt('Specify a Scantron data file to upload.').'
 5053:             </th>
 5054:        '.&Apache::loncommon::end_data_table_header_row().'
 5055:        '.&Apache::loncommon::start_data_table_row().'
 5056:             <td>
 5057: ');
 5058:     my $default_form_data=&defaultFormData(&get_symb($r,1));
 5059:     my $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
 5060:     my $cnum= $env{'course.'.$env{'request.course.id'}.'.num'};
 5061:     $r->print('
 5062:               <script type="text/javascript" language="javascript">
 5063:     function checkUpload(formname) {
 5064: 	if (formname.upfile.value == "") {
 5065: 	    alert("'.&mt('Please use the browse button to select a file from your local directory.').'");
 5066: 	    return false;
 5067: 	}
 5068: 	formname.submit();
 5069:     }
 5070:               </script>
 5071: 
 5072:               <form enctype="multipart/form-data" action="/adm/grades" name="rules" method="post">
 5073:                 '.$default_form_data.'
 5074:                 <input name="courseid" type="hidden" value="'.$cnum.'" />
 5075:                 <input name="domainid" type="hidden" value="'.$cdom.'" />
 5076:                 <input name="command" value="scantronupload_save" type="hidden" />
 5077:                 '.&mt('File to upload: [_1]','<input type="file" name="upfile" size="50" />').'
 5078:                 <br />
 5079:                 <input type="button" onClick="javascript:checkUpload(this.form);" value="'.&mt('Upload Scantron Data').'" />
 5080:               </form>
 5081: ');
 5082: 
 5083:         $r->print('
 5084:             </td>
 5085:        '.&Apache::loncommon::end_data_table_row().'
 5086:        '.&Apache::loncommon::end_data_table().'
 5087: ');
 5088:     }
 5089: 
 5090:     # Chunk of the form that prompts to view a scoring office file,
 5091:     # corrected file, skipped records in a file.
 5092: 
 5093:     $r->print('
 5094:    <br />
 5095:    <form action="/adm/grades" name="scantron_download">
 5096:      '.$default_form_data.'
 5097:      <input type="hidden" name="command" value="scantron_download" />
 5098:      '.&Apache::loncommon::start_data_table('LC_scantron_action').'
 5099:        '.&Apache::loncommon::start_data_table_header_row().'
 5100:               <th>
 5101:                 &nbsp;'.&mt('Download a scoring office file').'
 5102:               </th>
 5103:        '.&Apache::loncommon::end_data_table_header_row().'
 5104:        '.&Apache::loncommon::start_data_table_row().'
 5105:               <td> '.&mt('Filename of scoring office file: [_1]',$file_selector).' 
 5106:                 <br />
 5107:                 <input type="submit" value="'.&mt('Download: Show List of Associated Files').'" />
 5108:        '.&Apache::loncommon::end_data_table_row().'
 5109:      '.&Apache::loncommon::end_data_table().'
 5110:    </form>
 5111:    <br />
 5112: ');
 5113: 
 5114:     &Apache::lonpickcode::code_list($r,2);
 5115: 
 5116:     $r->print('<br /><form method="post" name="checkscantron">'.
 5117:              $default_form_data."\n".
 5118:              &Apache::loncommon::start_data_table('LC_scantron_action')."\n".
 5119:              &Apache::loncommon::start_data_table_header_row()."\n".
 5120:              '<th colspan="2">
 5121:               &nbsp;'.&mt('Review scantron data and submissions for a previously graded folder/sequence')."\n".
 5122:              '</th>'."\n".
 5123:               &Apache::loncommon::end_data_table_header_row()."\n".
 5124:               &Apache::loncommon::start_data_table_row()."\n".
 5125:               '<td> '.&mt('Graded folder/sequence:').' </td>'."\n".
 5126:               '<td> '.$sequence_selector.' </td>'.
 5127:               &Apache::loncommon::end_data_table_row()."\n".
 5128:               &Apache::loncommon::start_data_table_row()."\n".
 5129:               '<td> '.&mt('Filename of scoring office file:').' </td>'."\n".
 5130:               '<td> '.$file_selector.' </td>'."\n".
 5131:               &Apache::loncommon::end_data_table_row()."\n".
 5132:               &Apache::loncommon::start_data_table_row()."\n".
 5133:               '<td> '.&mt('Format of data file:').' </td>'."\n".
 5134:               '<td> '.$format_selector.' </td>'."\n".
 5135:               &Apache::loncommon::end_data_table_row()."\n".
 5136:               &Apache::loncommon::start_data_table_row()."\n".
 5137:               '<td colspan="2">'."\n".
 5138:               '<input type="hidden" name="command" value="checksubmissions" />'."\n".
 5139:               '<input type="submit" value="'.&mt('Review Scantron Data and Submission Records').'" />'."\n".
 5140:               '</td>'."\n".
 5141:               &Apache::loncommon::end_data_table_row()."\n".
 5142:               &Apache::loncommon::end_data_table()."\n".
 5143:               '</form><br />');
 5144:     $r->print($grading_menu_button);
 5145:     return;
 5146: }
 5147: 
 5148: =pod
 5149: 
 5150: =item get_scantron_config
 5151: 
 5152:    Parse and return the scantron configuration line selected as a
 5153:    hash of configuration file fields.
 5154: 
 5155:  Arguments:
 5156:     which - the name of the configuration to parse from the file.
 5157: 
 5158: 
 5159:  Returns:
 5160:             If the named configuration is not in the file, an empty
 5161:             hash is returned.
 5162:     a hash with the fields
 5163:       name         - internal name for the this configuration setup
 5164:       description  - text to display to operator that describes this config
 5165:       CODElocation - if 0 or the string 'none'
 5166:                           - no CODE exists for this config
 5167:                      if -1 || the string 'letter'
 5168:                           - a CODE exists for this config and is
 5169:                             a string of letters
 5170:                      Unsupported value (but planned for future support)
 5171:                           if a positive integer
 5172:                                - The CODE exists as the first n items from
 5173:                                  the question section of the form
 5174:                           if the string 'number'
 5175:                                - The CODE exists for this config and is
 5176:                                  a string of numbers
 5177:       CODEstart   - (only matter if a CODE exists) column in the line where
 5178:                      the CODE starts
 5179:       CODElength  - length of the CODE
 5180:       IDstart     - column where the student ID number starts
 5181:       IDlength    - length of the student ID info
 5182:       Qstart      - column where the information from the bubbled
 5183:                     'questions' start
 5184:       Qlength     - number of columns comprising a single bubble line from
 5185:                     the sheet. (usually either 1 or 10)
 5186:       Qon         - either a single character representing the character used
 5187:                     to signal a bubble was chosen in the positional setup, or
 5188:                     the string 'letter' if the letter of the chosen bubble is
 5189:                     in the final, or 'number' if a number representing the
 5190:                     chosen bubble is in the file (1->A 0->J)
 5191:       Qoff        - the character used to represent that a bubble was
 5192:                     left blank
 5193:       PaperID     - if the scanning process generates a unique number for each
 5194:                     sheet scanned the column that this ID number starts in
 5195:       PaperIDlength - number of columns that comprise the unique ID number
 5196:                       for the sheet of paper
 5197:       FirstName   - column that the first name starts in
 5198:       FirstNameLength - number of columns that the first name spans
 5199:  
 5200:       LastName    - column that the last name starts in
 5201:       LastNameLength - number of columns that the last name spans
 5202: 
 5203: =cut
 5204: 
 5205: sub get_scantron_config {
 5206:     my ($which) = @_;
 5207:     my @lines = &get_scantronformat_file();
 5208:     my %config;
 5209:     #FIXME probably should move to XML it has already gotten a bit much now
 5210:     foreach my $line (@lines) {
 5211: 	my ($name,$descrip)=split(/:/,$line);
 5212: 	if ($name ne $which ) { next; }
 5213: 	chomp($line);
 5214: 	my @config=split(/:/,$line);
 5215: 	$config{'name'}=$config[0];
 5216: 	$config{'description'}=$config[1];
 5217: 	$config{'CODElocation'}=$config[2];
 5218: 	$config{'CODEstart'}=$config[3];
 5219: 	$config{'CODElength'}=$config[4];
 5220: 	$config{'IDstart'}=$config[5];
 5221: 	$config{'IDlength'}=$config[6];
 5222: 	$config{'Qstart'}=$config[7];
 5223:  	$config{'Qlength'}=$config[8];
 5224: 	$config{'Qoff'}=$config[9];
 5225: 	$config{'Qon'}=$config[10];
 5226: 	$config{'PaperID'}=$config[11];
 5227: 	$config{'PaperIDlength'}=$config[12];
 5228: 	$config{'FirstName'}=$config[13];
 5229: 	$config{'FirstNamelength'}=$config[14];
 5230: 	$config{'LastName'}=$config[15];
 5231: 	$config{'LastNamelength'}=$config[16];
 5232: 	last;
 5233:     }
 5234:     return %config;
 5235: }
 5236: 
 5237: =pod 
 5238: 
 5239: =item username_to_idmap
 5240: 
 5241:     creates a hash keyed by student id with values of the corresponding
 5242:     student username:domain.
 5243: 
 5244:   Arguments:
 5245: 
 5246:     $classlist - reference to the class list hash. This is a hash
 5247:                  keyed by student name:domain  whose elements are references
 5248:                  to arrays containing various chunks of information
 5249:                  about the student. (See loncoursedata for more info).
 5250: 
 5251:   Returns
 5252:     %idmap - the constructed hash
 5253: 
 5254: =cut
 5255: 
 5256: sub username_to_idmap {
 5257:     my ($classlist)= @_;
 5258:     my %idmap;
 5259:     foreach my $student (keys(%$classlist)) {
 5260: 	$idmap{$classlist->{$student}->[&Apache::loncoursedata::CL_ID]}=
 5261: 	    $student;
 5262:     }
 5263:     return %idmap;
 5264: }
 5265: 
 5266: =pod
 5267: 
 5268: =item scantron_fixup_scanline
 5269: 
 5270:    Process a requested correction to a scanline.
 5271: 
 5272:   Arguments:
 5273:     $scantron_config   - hash from &get_scantron_config()
 5274:     $scan_data         - hash of correction information 
 5275:                           (see &scantron_getfile())
 5276:     $line              - existing scanline
 5277:     $whichline         - line number of the passed in scanline
 5278:     $field             - type of change to process 
 5279:                          (either 
 5280:                           'ID'     -> correct the student ID number
 5281:                           'CODE'   -> correct the CODE
 5282:                           'answer' -> fixup the submitted answers)
 5283:     
 5284:    $args               - hash of additional info,
 5285:                           - 'ID' 
 5286:                                'newid' -> studentID to use in replacement
 5287:                                           of existing one
 5288:                           - 'CODE' 
 5289:                                'CODE_ignore_dup' - set to true if duplicates
 5290:                                                    should be ignored.
 5291: 	                       'CODE' - is new code or 'use_unfound'
 5292:                                         if the existing unfound code should
 5293:                                         be used as is
 5294:                           - 'answer'
 5295:                                'response' - new answer or 'none' if blank
 5296:                                'question' - the bubble line to change
 5297:                                'questionnum' - the question identifier,
 5298:                                                may include subquestion. 
 5299: 
 5300:   Returns:
 5301:     $line - the modified scanline
 5302: 
 5303:   Side effects: 
 5304:     $scan_data - may be updated
 5305: 
 5306: =cut
 5307: 
 5308: 
 5309: sub scantron_fixup_scanline {
 5310:     my ($scantron_config,$scan_data,$line,$whichline,$field,$args)=@_;
 5311:     if ($field eq 'ID') {
 5312: 	if (length($args->{'newid'}) > $$scantron_config{'IDlength'}) {
 5313: 	    return ($line,1,'New value too large');
 5314: 	}
 5315: 	if (length($args->{'newid'}) < $$scantron_config{'IDlength'}) {
 5316: 	    $args->{'newid'}=sprintf('%-'.$$scantron_config{'IDlength'}.'s',
 5317: 				     $args->{'newid'});
 5318: 	}
 5319: 	substr($line,$$scantron_config{'IDstart'}-1,
 5320: 	       $$scantron_config{'IDlength'})=$args->{'newid'};
 5321: 	if ($args->{'newid'}=~/^\s*$/) {
 5322: 	    &scan_data($scan_data,"$whichline.user",
 5323: 		       $args->{'username'}.':'.$args->{'domain'});
 5324: 	}
 5325:     } elsif ($field eq 'CODE') {
 5326: 	if ($args->{'CODE_ignore_dup'}) {
 5327: 	    &scan_data($scan_data,"$whichline.CODE_ignore_dup",'1');
 5328: 	}
 5329: 	&scan_data($scan_data,"$whichline.useCODE",'1');
 5330: 	if ($args->{'CODE'} ne 'use_unfound') {
 5331: 	    if (length($args->{'CODE'}) > $$scantron_config{'CODElength'}) {
 5332: 		return ($line,1,'New CODE value too large');
 5333: 	    }
 5334: 	    if (length($args->{'CODE'}) < $$scantron_config{'CODElength'}) {
 5335: 		$args->{'CODE'}=sprintf('%-'.$$scantron_config{'CODElength'}.'s',$args->{'CODE'});
 5336: 	    }
 5337: 	    substr($line,$$scantron_config{'CODEstart'}-1,
 5338: 		   $$scantron_config{'CODElength'})=$args->{'CODE'};
 5339: 	}
 5340:     } elsif ($field eq 'answer') {
 5341: 	my $length=$scantron_config->{'Qlength'};
 5342: 	my $off=$scantron_config->{'Qoff'};
 5343: 	my $on=$scantron_config->{'Qon'};
 5344: 	my $answer=${off}x$length;
 5345: 	if ($args->{'response'} eq 'none') {
 5346: 	    &scan_data($scan_data,
 5347: 		       "$whichline.no_bubble.".$args->{'questionnum'},'1');
 5348: 	} else {
 5349: 	    if ($on eq 'letter') {
 5350: 		my @alphabet=('A'..'Z');
 5351: 		$answer=$alphabet[$args->{'response'}];
 5352: 	    } elsif ($on eq 'number') {
 5353: 		$answer=$args->{'response'}+1;
 5354: 		if ($answer == 10) { $answer = '0'; }
 5355: 	    } else {
 5356: 		substr($answer,$args->{'response'},1)=$on;
 5357: 	    }
 5358: 	    &scan_data($scan_data,
 5359: 		       "$whichline.no_bubble.".$args->{'questionnum'},undef,'1');
 5360: 	}
 5361: 	my $where=$length*($args->{'question'}-1)+$scantron_config->{'Qstart'};
 5362: 	substr($line,$where-1,$length)=$answer;
 5363:     }
 5364:     return $line;
 5365: }
 5366: 
 5367: =pod
 5368: 
 5369: =item scan_data
 5370: 
 5371:     Edit or look up  an item in the scan_data hash.
 5372: 
 5373:   Arguments:
 5374:     $scan_data  - The hash (see scantron_getfile)
 5375:     $key        - shorthand of the key to edit (actual key is
 5376:                   scantronfilename_key).
 5377:     $data        - New value of the hash entry.
 5378:     $delete      - If true, the entry is removed from the hash.
 5379: 
 5380:   Returns:
 5381:     The new value of the hash table field (undefined if deleted).
 5382: 
 5383: =cut
 5384: 
 5385: 
 5386: sub scan_data {
 5387:     my ($scan_data,$key,$value,$delete)=@_;
 5388:     my $filename=$env{'form.scantron_selectfile'};
 5389:     if (defined($value)) {
 5390: 	$scan_data->{$filename.'_'.$key} = $value;
 5391:     }
 5392:     if ($delete) { delete($scan_data->{$filename.'_'.$key}); }
 5393:     return $scan_data->{$filename.'_'.$key};
 5394: }
 5395: 
 5396: # ----- These first few routines are general use routines.----
 5397: 
 5398: # Return the number of occurences of a pattern in a string.
 5399: 
 5400: sub occurence_count {
 5401:     my ($string, $pattern) = @_;
 5402: 
 5403:     my @matches = ($string =~ /$pattern/g);
 5404: 
 5405:     return scalar(@matches);
 5406: }
 5407: 
 5408: 
 5409: # Take a string known to have digits and convert all the
 5410: # digits into letters in the range J,A..I.
 5411: 
 5412: sub digits_to_letters {
 5413:     my ($input) = @_;
 5414: 
 5415:     my @alphabet = ('J', 'A'..'I');
 5416: 
 5417:     my @input    = split(//, $input);
 5418:     my $output ='';
 5419:     for (my $i = 0; $i < scalar(@input); $i++) {
 5420: 	if ($input[$i] =~ /\d/) {
 5421: 	    $output .= $alphabet[$input[$i]];
 5422: 	} else {
 5423: 	    $output .= $input[$i];
 5424: 	}
 5425:     }
 5426:     return $output;
 5427: }
 5428: 
 5429: =pod 
 5430: 
 5431: =item scantron_parse_scanline
 5432: 
 5433:   Decodes a scanline from the selected scantron file
 5434: 
 5435:  Arguments:
 5436:     line             - The text of the scantron file line to process
 5437:     whichline        - Line number
 5438:     scantron_config  - Hash describing the format of the scantron lines.
 5439:     scan_data        - Hash of extra information about the scanline
 5440:                        (see scantron_getfile for more information)
 5441:     just_header      - True if should not process question answers but only
 5442:                        the stuff to the left of the answers.
 5443:  Returns:
 5444:    Hash containing the result of parsing the scanline
 5445: 
 5446:    Keys are all proceeded by the string 'scantron.'
 5447: 
 5448:        CODE    - the CODE in use for this scanline
 5449:        useCODE - 1 if the CODE is invalid but it usage has been forced
 5450:                  by the operator
 5451:        CODE_ignore_dup - 1 if the CODE is a duplicated use when unique
 5452:                             CODEs were selected, but the usage has been
 5453:                             forced by the operator
 5454:        ID  - student ID
 5455:        PaperID - if used, the ID number printed on the sheet when the 
 5456:                  paper was scanned
 5457:        FirstName - first name from the sheet
 5458:        LastName  - last name from the sheet
 5459: 
 5460:      if just_header was not true these key may also exist
 5461: 
 5462:        missingerror - a list of bubble ranges that are considered to be answers
 5463:                       to a single question that don't have any bubbles filled in.
 5464:                       Of the form questionnumber:firstbubblenumber:count.
 5465:        doubleerror  - a list of bubble ranges that are considered to be answers
 5466:                       to a single question that have more than one bubble filled in.
 5467:                       Of the form questionnumber::firstbubblenumber:count
 5468:    
 5469:                 In the above, count is the number of bubble responses in the
 5470:                 input line needed to represent the possible answers to the question.
 5471:                 e.g. a radioresponse with 15 choices in an answer sheet with 10 choices
 5472:                 per line would have count = 2.
 5473: 
 5474:        maxquest     - the number of the last bubble line that was parsed
 5475: 
 5476:        (<number> starts at 1)
 5477:        <number>.answer - zero or more letters representing the selected
 5478:                          letters from the scanline for the bubble line 
 5479:                          <number>.
 5480:                          if blank there was either no bubble or there where
 5481:                          multiple bubbles, (consult the keys missingerror and
 5482:                          doubleerror if this is an error condition)
 5483: 
 5484: =cut
 5485: 
 5486: sub scantron_parse_scanline {
 5487:     my ($line,$whichline,$scantron_config,$scan_data,$just_header)=@_;
 5488: 
 5489:     my %record;
 5490:     my $lastpos = $env{'form.scantron_maxbubble'}*$$scantron_config{'Qlength'};
 5491:     my $questions=substr($line,$$scantron_config{'Qstart'}-1,$lastpos);  # Answers
 5492:     my $data=substr($line,0,$$scantron_config{'Qstart'}-1);     # earlier stuff
 5493:     if (!($$scantron_config{'CODElocation'} eq 0 ||
 5494: 	  $$scantron_config{'CODElocation'} eq 'none')) {
 5495: 	if ($$scantron_config{'CODElocation'} < 0 ||
 5496: 	    $$scantron_config{'CODElocation'} eq 'letter' ||
 5497: 	    $$scantron_config{'CODElocation'} eq 'number') {
 5498: 	    $record{'scantron.CODE'}=substr($data,
 5499: 					    $$scantron_config{'CODEstart'}-1,
 5500: 					    $$scantron_config{'CODElength'});
 5501: 	    if (&scan_data($scan_data,"$whichline.useCODE")) {
 5502: 		$record{'scantron.useCODE'}=1;
 5503: 	    }
 5504: 	    if (&scan_data($scan_data,"$whichline.CODE_ignore_dup")) {
 5505: 		$record{'scantron.CODE_ignore_dup'}=1;
 5506: 	    }
 5507: 	} else {
 5508: 	    #FIXME interpret first N questions
 5509: 	}
 5510:     }
 5511:     $record{'scantron.ID'}=substr($data,$$scantron_config{'IDstart'}-1,
 5512: 				  $$scantron_config{'IDlength'});
 5513:     $record{'scantron.PaperID'}=
 5514: 	substr($data,$$scantron_config{'PaperID'}-1,
 5515: 	       $$scantron_config{'PaperIDlength'});
 5516:     $record{'scantron.FirstName'}=
 5517: 	substr($data,$$scantron_config{'FirstName'}-1,
 5518: 	       $$scantron_config{'FirstNamelength'});
 5519:     $record{'scantron.LastName'}=
 5520: 	substr($data,$$scantron_config{'LastName'}-1,
 5521: 	       $$scantron_config{'LastNamelength'});
 5522:     if ($just_header) { return \%record; }
 5523: 
 5524:     my @alphabet=('A'..'Z');
 5525:     my $questnum=0;
 5526:     my $ansnum  =1;		# Multiple 'answer lines'/question.
 5527: 
 5528:     chomp($questions);		# Get rid of any trailing \n.
 5529:     $questions =~ s/\r$//;      # Get rid of trailing \r too (MAC or Win uploads).
 5530:     while (length($questions)) {
 5531: 	my $answers_needed = $bubble_lines_per_response{$questnum};
 5532:         my $answer_length  = ($$scantron_config{'Qlength'} * $answers_needed)
 5533:                              || 1;
 5534:         $questnum++;
 5535:         my $quest_id = $questnum;
 5536:         my $currentquest = substr($questions,0,$answer_length);
 5537:         $questions       = substr($questions,$answer_length);
 5538:         if (length($currentquest) < $answer_length) { next; }
 5539: 
 5540:         if ($subdivided_bubble_lines{$questnum-1} =~ /,/) {
 5541:             my $subquestnum = 1;
 5542:             my $subquestions = $currentquest;
 5543:             my @subanswers_needed = 
 5544:                 split(/,/,$subdivided_bubble_lines{$questnum-1});  
 5545:             foreach my $subans (@subanswers_needed) {
 5546:                 my $subans_length =
 5547:                     ($$scantron_config{'Qlength'} * $subans)  || 1;
 5548:                 my $currsubquest = substr($subquestions,0,$subans_length);
 5549:                 $subquestions   = substr($subquestions,$subans_length);
 5550:                 $quest_id = "$questnum.$subquestnum";
 5551:                 if (($$scantron_config{'Qon'} eq 'letter') ||
 5552:                     ($$scantron_config{'Qon'} eq 'number')) {
 5553:                     $ansnum = &scantron_validator_lettnum($ansnum, 
 5554:                         $questnum,$quest_id,$subans,$currsubquest,$whichline,
 5555:                         \@alphabet,\%record,$scantron_config,$scan_data);
 5556:                 } else {
 5557:                     $ansnum = &scantron_validator_positional($ansnum,
 5558:                         $questnum,$quest_id,$subans,$currsubquest,$whichline,                        \@alphabet,\%record,$scantron_config,$scan_data);
 5559:                 }
 5560:                 $subquestnum ++;
 5561:             }
 5562:         } else {
 5563:             if (($$scantron_config{'Qon'} eq 'letter') ||
 5564:                 ($$scantron_config{'Qon'} eq 'number')) {
 5565:                 $ansnum = &scantron_validator_lettnum($ansnum,$questnum,
 5566:                     $quest_id,$answers_needed,$currentquest,$whichline,
 5567:                     \@alphabet,\%record,$scantron_config,$scan_data);
 5568:             } else {
 5569:                 $ansnum = &scantron_validator_positional($ansnum,$questnum,
 5570:                     $quest_id,$answers_needed,$currentquest,$whichline,
 5571:                     \@alphabet,\%record,$scantron_config,$scan_data);
 5572:             }
 5573:         }
 5574:     }
 5575:     $record{'scantron.maxquest'}=$questnum;
 5576:     return \%record;
 5577: }
 5578: 
 5579: sub scantron_validator_lettnum {
 5580:     my ($ansnum,$questnum,$quest_id,$answers_needed,$currquest,$whichline,
 5581:         $alphabet,$record,$scantron_config,$scan_data) = @_;
 5582: 
 5583:     # Qon 'letter' implies for each slot in currquest we have:
 5584:     #    ? or * for doubles, a letter in A-Z for a bubble, and
 5585:     #    about anything else (esp. a value of Qoff) for missing
 5586:     #    bubbles.
 5587:     #
 5588:     # Qon 'number' implies each slot gives a digit that indexes the
 5589:     #    bubbles filled, or Qoff, or a non-number for unbubbled lines,
 5590:     #    and * or ? for double bubbles on a single line.
 5591:     #
 5592: 
 5593:     my $matchon;
 5594:     if ($$scantron_config{'Qon'} eq 'letter') {
 5595:         $matchon = '[A-Z]';
 5596:     } elsif ($$scantron_config{'Qon'} eq 'number') {
 5597:         $matchon = '\d';
 5598:     }
 5599:     my $occurrences = 0;
 5600:     if (($responsetype_per_response{$questnum-1} eq 'essayresponse') ||
 5601:         ($responsetype_per_response{$questnum-1} eq 'formularesponse') ||
 5602:         ($responsetype_per_response{$questnum-1} eq 'stringresponse') ||
 5603:         ($responsetype_per_response{$questnum-1} eq 'imageresponse') ||
 5604:         ($responsetype_per_response{$questnum-1} eq 'reactionresponse') ||
 5605:         ($responsetype_per_response{$questnum-1} eq 'organicresponse')) {
 5606:         my @singlelines = split('',$currquest);
 5607:         foreach my $entry (@singlelines) {
 5608:             $occurrences = &occurence_count($entry,$matchon);
 5609:             if ($occurrences > 1) {
 5610:                 last;
 5611:             }
 5612:         } 
 5613:     } else {
 5614:         $occurrences = &occurence_count($currquest,$matchon); 
 5615:     }
 5616:     if (($currquest =~ /\?/ || $currquest =~ /\*/) || ($occurrences > 1)) {
 5617:         push(@{$record->{'scantron.doubleerror'}},$quest_id);
 5618:         for (my $ans=0; $ans<$answers_needed; $ans++) {
 5619:             my $bubble = substr($currquest,$ans,1);
 5620:             if ($bubble =~ /$matchon/ ) {
 5621:                 if ($$scantron_config{'Qon'} eq 'number') {
 5622:                     if ($bubble == 0) {
 5623:                         $bubble = 10; 
 5624:                     }
 5625:                     $record->{"scantron.$ansnum.answer"} = 
 5626:                         $alphabet->[$bubble-1];
 5627:                 } else {
 5628:                     $record->{"scantron.$ansnum.answer"} = $bubble;
 5629:                 }
 5630:             } else {
 5631:                 $record->{"scantron.$ansnum.answer"}='';
 5632:             }
 5633:             $ansnum++;
 5634:         }
 5635:     } elsif (!defined($currquest)
 5636:             || (&occurence_count($currquest, $$scantron_config{'Qoff'}) == length($currquest))
 5637:             || (&occurence_count($currquest,$matchon) == 0)) {
 5638:         for (my $ans=0; $ans<$answers_needed; $ans++ ) {
 5639:             $record->{"scantron.$ansnum.answer"}='';
 5640:             $ansnum++;
 5641:         }
 5642:         if (!&scan_data($scan_data,"$whichline.no_bubble.$quest_id")) {
 5643:             push(@{$record->{'scantron.missingerror'}},$quest_id);
 5644:         }
 5645:     } else {
 5646:         if ($$scantron_config{'Qon'} eq 'number') {
 5647:             $currquest = &digits_to_letters($currquest);            
 5648:         }
 5649:         for (my $ans=0; $ans<$answers_needed; $ans++) {
 5650:             my $bubble = substr($currquest,$ans,1);
 5651:             $record->{"scantron.$ansnum.answer"} = $bubble;
 5652:             $ansnum++;
 5653:         }
 5654:     }
 5655:     return $ansnum;
 5656: }
 5657: 
 5658: sub scantron_validator_positional {
 5659:     my ($ansnum,$questnum,$quest_id,$answers_needed,$currquest,
 5660:         $whichline,$alphabet,$record,$scantron_config,$scan_data) = @_;
 5661: 
 5662:     # Otherwise there's a positional notation;
 5663:     # each bubble line requires Qlength items, and there are filled in
 5664:     # bubbles for each case where there 'Qon' characters.
 5665:     #
 5666: 
 5667:     my @array=split($$scantron_config{'Qon'},$currquest,-1);
 5668: 
 5669:     # If the split only gives us one element.. the full length of the
 5670:     # answer string, no bubbles are filled in:
 5671: 
 5672:     if ($answers_needed eq '') {
 5673:         return;
 5674:     }
 5675: 
 5676:     if (length($array[0]) eq $$scantron_config{'Qlength'}*$answers_needed) {
 5677:         for (my $ans=0; $ans<$answers_needed; $ans++ ) {
 5678:             $record->{"scantron.$ansnum.answer"}='';
 5679:             $ansnum++;
 5680:         }
 5681:         if (!&scan_data($scan_data,"$whichline.no_bubble.$quest_id")) {
 5682:             push(@{$record->{"scantron.missingerror"}},$quest_id);
 5683:         }
 5684:     } elsif (scalar(@array) == 2) {
 5685:         my $location = length($array[0]);
 5686:         my $line_num = int($location / $$scantron_config{'Qlength'});
 5687:         my $bubble   = $alphabet->[$location % $$scantron_config{'Qlength'}];
 5688:         for (my $ans=0; $ans<$answers_needed; $ans++) {
 5689:             if ($ans eq $line_num) {
 5690:                 $record->{"scantron.$ansnum.answer"} = $bubble;
 5691:             } else {
 5692:                 $record->{"scantron.$ansnum.answer"} = ' ';
 5693:             }
 5694:             $ansnum++;
 5695:          }
 5696:     } else {
 5697:         #  If there's more than one instance of a bubble character
 5698:         #  That's a double bubble; with positional notation we can
 5699:         #  record all the bubbles filled in as well as the
 5700:         #  fact this response consists of multiple bubbles.
 5701:         #
 5702:         if (($responsetype_per_response{$questnum-1} eq 'essayresponse') ||
 5703:             ($responsetype_per_response{$questnum-1} eq 'formularesponse') ||
 5704:             ($responsetype_per_response{$questnum-1} eq 'stringresponse') ||
 5705:             ($responsetype_per_response{$questnum-1} eq 'imageresponse') ||
 5706:             ($responsetype_per_response{$questnum-1} eq 'reactionresponse') ||
 5707:             ($responsetype_per_response{$questnum-1} eq 'organicresponse')) {
 5708:             my $doubleerror = 0;
 5709:             while (($currquest >= $$scantron_config{'Qlength'}) && 
 5710:                    (!$doubleerror)) {
 5711:                my $currline = substr($currquest,0,$$scantron_config{'Qlength'});
 5712:                $currquest = substr($currquest,$$scantron_config{'Qlength'});
 5713:                my @currarray = split($$scantron_config{'Qon'},$currline,-1);
 5714:                if (length(@currarray) > 2) {
 5715:                    $doubleerror = 1;
 5716:                } 
 5717:             }
 5718:             if ($doubleerror) {
 5719:                 push(@{$record->{'scantron.doubleerror'}},$quest_id);
 5720:             }
 5721:         } else {
 5722:             push(@{$record->{'scantron.doubleerror'}},$quest_id);
 5723:         }
 5724:         my $item = $ansnum;
 5725:         for (my $ans=0; $ans<$answers_needed; $ans++) {
 5726:             $record->{"scantron.$item.answer"} = '';
 5727:             $item ++;
 5728:         }
 5729: 
 5730:         my @ans=@array;
 5731:         my $i=0;
 5732:         my $increment = 0;
 5733:         while ($#ans) {
 5734:             $i+=length($ans[0]) + $increment;
 5735:             my $line   = int($i/$$scantron_config{'Qlength'} + $ansnum);
 5736:             my $bubble = $i%$$scantron_config{'Qlength'};
 5737:             $record->{"scantron.$line.answer"}.=$alphabet->[$bubble];
 5738:             shift(@ans);
 5739:             $increment = 1;
 5740:         }
 5741:         $ansnum += $answers_needed;
 5742:     }
 5743:     return $ansnum;
 5744: }
 5745: 
 5746: =pod
 5747: 
 5748: =item scantron_add_delay
 5749: 
 5750:    Adds an error message that occurred during the grading phase to a
 5751:    queue of messages to be shown after grading pass is complete
 5752: 
 5753:  Arguments:
 5754:    $delayqueue  - arrary ref of hash ref of error messages
 5755:    $scanline    - the scanline that caused the error
 5756:    $errormesage - the error message
 5757:    $errorcode   - a numeric code for the error
 5758: 
 5759:  Side Effects:
 5760:    updates the $delayqueue to have a new hash ref of the error
 5761: 
 5762: =cut
 5763: 
 5764: sub scantron_add_delay {
 5765:     my ($delayqueue,$scanline,$errormessage,$errorcode)=@_;
 5766:     push(@$delayqueue,
 5767: 	 {'line' => $scanline, 'emsg' => $errormessage,
 5768: 	  'ecode' => $errorcode }
 5769: 	 );
 5770: }
 5771: 
 5772: =pod
 5773: 
 5774: =item scantron_find_student
 5775: 
 5776:    Finds the username for the current scanline
 5777: 
 5778:   Arguments:
 5779:    $scantron_record - hash result from scantron_parse_scanline
 5780:    $scan_data       - hash of correction information 
 5781:                       (see &scantron_getfile() form more information)
 5782:    $idmap           - hash from &username_to_idmap()
 5783:    $line            - number of current scanline
 5784:  
 5785:   Returns:
 5786:    Either 'username:domain' or undef if unknown
 5787: 
 5788: =cut
 5789: 
 5790: sub scantron_find_student {
 5791:     my ($scantron_record,$scan_data,$idmap,$line)=@_;
 5792:     my $scanID=$$scantron_record{'scantron.ID'};
 5793:     if ($scanID =~ /^\s*$/) {
 5794:  	return &scan_data($scan_data,"$line.user");
 5795:     }
 5796:     foreach my $id (keys(%$idmap)) {
 5797:  	if (lc($id) eq lc($scanID)) {
 5798:  	    return $$idmap{$id};
 5799:  	}
 5800:     }
 5801:     return undef;
 5802: }
 5803: 
 5804: =pod
 5805: 
 5806: =item scantron_filter
 5807: 
 5808:    Filter sub for lonnavmaps, filters out hidden resources if ignore
 5809:    hidden resources was selected
 5810: 
 5811: =cut
 5812: 
 5813: sub scantron_filter {
 5814:     my ($curres)=@_;
 5815: 
 5816:     if (ref($curres) && $curres->is_problem()) {
 5817: 	# if the user has asked to not have either hidden
 5818: 	# or 'randomout' controlled resources to be graded
 5819: 	# don't include them
 5820: 	if ($env{'form.scantron_options_hidden'} eq 'ignore_hidden'
 5821: 	    && $curres->randomout) {
 5822: 	    return 0;
 5823: 	}
 5824: 	return 1;
 5825:     }
 5826:     return 0;
 5827: }
 5828: 
 5829: =pod
 5830: 
 5831: =item scantron_process_corrections
 5832: 
 5833:    Gets correction information out of submitted form data and corrects
 5834:    the scanline
 5835: 
 5836: =cut
 5837: 
 5838: sub scantron_process_corrections {
 5839:     my ($r) = @_;
 5840:     my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
 5841:     my ($scanlines,$scan_data)=&scantron_getfile();
 5842:     my $classlist=&Apache::loncoursedata::get_classlist();
 5843:     my $which=$env{'form.scantron_line'};
 5844:     my $line=&scantron_get_line($scanlines,$scan_data,$which);
 5845:     my ($skip,$err,$errmsg);
 5846:     if ($env{'form.scantron_skip_record'}) {
 5847: 	$skip=1;
 5848:     } elsif ($env{'form.scantron_corrections'} =~ /^(duplicate|incorrect)ID$/) {
 5849: 	my $newstudent=$env{'form.scantron_username'}.':'.
 5850: 	    $env{'form.scantron_domain'};
 5851: 	my $newid=$classlist->{$newstudent}->[&Apache::loncoursedata::CL_ID];
 5852: 	($line,$err,$errmsg)=
 5853: 	    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
 5854: 				     'ID',{'newid'=>$newid,
 5855: 				    'username'=>$env{'form.scantron_username'},
 5856: 				    'domain'=>$env{'form.scantron_domain'}});
 5857:     } elsif ($env{'form.scantron_corrections'} =~ /^(duplicate|incorrect)CODE$/) {
 5858: 	my $resolution=$env{'form.scantron_CODE_resolution'};
 5859: 	my $newCODE;
 5860: 	my %args;
 5861: 	if      ($resolution eq 'use_unfound') {
 5862: 	    $newCODE='use_unfound';
 5863: 	} elsif ($resolution eq 'use_found') {
 5864: 	    $newCODE=$env{'form.scantron_CODE_selectedvalue'};
 5865: 	} elsif ($resolution eq 'use_typed') {
 5866: 	    $newCODE=$env{'form.scantron_CODE_newvalue'};
 5867: 	} elsif ($resolution =~ /^use_closest_(\d+)/) {
 5868: 	    $newCODE=$env{"form.scantron_CODE_closest_$1"};
 5869: 	}
 5870: 	if ($env{'form.scantron_corrections'} eq 'duplicateCODE') {
 5871: 	    $args{'CODE_ignore_dup'}=1;
 5872: 	}
 5873: 	$args{'CODE'}=$newCODE;
 5874: 	($line,$err,$errmsg)=
 5875: 	    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
 5876: 				     'CODE',\%args);
 5877:     } elsif ($env{'form.scantron_corrections'} =~ /^(missing|double)bubble$/) {
 5878: 	foreach my $question (split(',',$env{'form.scantron_questions'})) {
 5879: 	    ($line,$err,$errmsg)=
 5880: 		&scantron_fixup_scanline(\%scantron_config,$scan_data,$line,
 5881: 					 $which,'answer',
 5882: 					 { 'question'=>$question,
 5883: 		      		   'response'=>$env{"form.scantron_correct_Q_$question"},
 5884:                                    'questionnum'=>$env{"form.scantron_questionnum_Q_$question"}});
 5885: 	    if ($err) { last; }
 5886: 	}
 5887:     }
 5888:     if ($err) {
 5889: 	$r->print("<span class=\"LC_warning\">Unable to accept last correction, an error occurred :$errmsg:</span>");
 5890:     } else {
 5891: 	&scantron_put_line($scanlines,$scan_data,$which,$line,$skip);
 5892: 	&scantron_putfile($scanlines,$scan_data);
 5893:     }
 5894: }
 5895: 
 5896: =pod
 5897: 
 5898: =item reset_skipping_status
 5899: 
 5900:    Forgets the current set of remember skipped scanlines (and thus
 5901:    reverts back to considering all lines in the
 5902:    scantron_skipped_<filename> file)
 5903: 
 5904: =cut
 5905: 
 5906: sub reset_skipping_status {
 5907:     my ($scanlines,$scan_data)=&scantron_getfile();
 5908:     &scan_data($scan_data,'remember_skipping',undef,1);
 5909:     &scantron_putfile(undef,$scan_data);
 5910: }
 5911: 
 5912: =pod
 5913: 
 5914: =item start_skipping
 5915: 
 5916:    Marks a scanline to be skipped. 
 5917: 
 5918: =cut
 5919: 
 5920: sub start_skipping {
 5921:     my ($scan_data,$i)=@_;
 5922:     my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
 5923:     if ($env{'form.scantron_options_redo'} =~ /^redo_/) {
 5924: 	$remembered{$i}=2;
 5925:     } else {
 5926: 	$remembered{$i}=1;
 5927:     }
 5928:     &scan_data($scan_data,'remember_skipping',join(':',%remembered));
 5929: }
 5930: 
 5931: =pod
 5932: 
 5933: =item should_be_skipped
 5934: 
 5935:    Checks whether a scanline should be skipped.
 5936: 
 5937: =cut
 5938: 
 5939: sub should_be_skipped {
 5940:     my ($scanlines,$scan_data,$i)=@_;
 5941:     if ($env{'form.scantron_options_redo'} !~ /^redo_/) {
 5942: 	# not redoing old skips
 5943: 	if ($scanlines->{'skipped'}[$i]) { return 1; }
 5944: 	return 0;
 5945:     }
 5946:     my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
 5947: 
 5948:     if (exists($remembered{$i}) && $remembered{$i} != 2 ) {
 5949: 	return 0;
 5950:     }
 5951:     return 1;
 5952: }
 5953: 
 5954: =pod
 5955: 
 5956: =item remember_current_skipped
 5957: 
 5958:    Discovers what scanlines are in the scantron_skipped_<filename>
 5959:    file and remembers them into scan_data for later use.
 5960: 
 5961: =cut
 5962: 
 5963: sub remember_current_skipped {
 5964:     my ($scanlines,$scan_data)=&scantron_getfile();
 5965:     my %to_remember;
 5966:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 5967: 	if ($scanlines->{'skipped'}[$i]) {
 5968: 	    $to_remember{$i}=1;
 5969: 	}
 5970:     }
 5971: 
 5972:     &scan_data($scan_data,'remember_skipping',join(':',%to_remember));
 5973:     &scantron_putfile(undef,$scan_data);
 5974: }
 5975: 
 5976: =pod
 5977: 
 5978: =item check_for_error
 5979: 
 5980:     Checks if there was an error when attempting to remove a specific
 5981:     scantron_.. bubble sheet data file. Prints out an error if
 5982:     something went wrong.
 5983: 
 5984: =cut
 5985: 
 5986: sub check_for_error {
 5987:     my ($r,$result)=@_;
 5988:     if ($result ne 'ok' && $result ne 'not_found' ) {
 5989: 	$r->print(&mt("An error occurred ([_1]) when trying to remove the existing corrections.",$result));
 5990:     }
 5991: }
 5992: 
 5993: =pod
 5994: 
 5995: =item scantron_warning_screen
 5996: 
 5997:    Interstitial screen to make sure the operator has selected the
 5998:    correct options before we start the validation phase.
 5999: 
 6000: =cut
 6001: 
 6002: sub scantron_warning_screen {
 6003:     my ($button_text)=@_;
 6004:     my $title=&Apache::lonnet::gettitle($env{'form.selectpage'});
 6005:     my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
 6006:     my $CODElist;
 6007:     if ($scantron_config{'CODElocation'} &&
 6008: 	$scantron_config{'CODEstart'} &&
 6009: 	$scantron_config{'CODElength'}) {
 6010: 	$CODElist=$env{'form.scantron_CODElist'};
 6011: 	if ($env{'form.scantron_CODElist'} eq '') { $CODElist='<span class="LC_warning">None</span>'; }
 6012: 	$CODElist=
 6013: 	    '<tr><td><b>'.&mt('List of CODES to validate against:').'</b></td><td><tt>'.
 6014: 	    $env{'form.scantron_CODElist'}.'</tt></td></tr>';
 6015:     }
 6016:     return ('
 6017: <p>
 6018: <span class="LC_warning">
 6019: '.&mt('Please double check the information below before clicking on \'[_1]\'',&mt($button_text)).'</span>
 6020: </p>
 6021: <table>
 6022: <tr><td><b>'.&mt('Sequence to be Graded:').'</b></td><td>'.$title.'</td></tr>
 6023: <tr><td><b>'.&mt('Data File that will be used:').'</b></td><td><tt>'.$env{'form.scantron_selectfile'}.'</tt></td></tr>
 6024: '.$CODElist.'
 6025: </table>
 6026: <br />
 6027: <p> '.&mt('If this information is correct, please click on \'[_1]\'.',&mt($button_text)).'</p>
 6028: <p> '.&mt('If something is incorrect, please click the \'Grading Menu\' button to start over.').'</p>
 6029: 
 6030: <br />
 6031: ');
 6032: }
 6033: 
 6034: =pod
 6035: 
 6036: =item scantron_do_warning
 6037: 
 6038:    Check if the operator has picked something for all required
 6039:    fields. Error out if something is missing.
 6040: 
 6041: =cut
 6042: 
 6043: sub scantron_do_warning {
 6044:     my ($r)=@_;
 6045:     my ($symb)=&get_symb($r);
 6046:     if (!$symb) {return '';}
 6047:     my $default_form_data=&defaultFormData($symb);
 6048:     $r->print(&scantron_form_start().$default_form_data);
 6049:     if ( $env{'form.selectpage'} eq '' ||
 6050: 	 $env{'form.scantron_selectfile'} eq '' ||
 6051: 	 $env{'form.scantron_format'} eq '' ) {
 6052: 	$r->print("<p>".&mt('You have forgetten to specify some information. Please go Back and try again.')."</p>");
 6053: 	if ( $env{'form.selectpage'} eq '') {
 6054: 	    $r->print('<p><span class="LC_error">'.&mt('You have not selected a Sequence to grade').'</span></p>');
 6055: 	} 
 6056: 	if ( $env{'form.scantron_selectfile'} eq '') {
 6057: 	    $r->print('<p><span class="LC_error">'.&mt('You have not selected a file that contains the student\'s response data.').'</span></p>');
 6058: 	} 
 6059: 	if ( $env{'form.scantron_format'} eq '') {
 6060: 	    $r->print('<p><span class="LC_error">'.&mt('You have not selected a the format of the student\'s response data.').'</span></p>');
 6061: 	} 
 6062:     } else {
 6063: 	my $warning=&scantron_warning_screen('Grading: Validate Records');
 6064: 	$r->print('
 6065: '.$warning.'
 6066: <input type="submit" name="submit" value="'.&mt('Grading: Validate Records').'" />
 6067: <input type="hidden" name="command" value="scantron_validate" />
 6068: ');
 6069:     }
 6070:     $r->print("</form><br />".&show_grading_menu_form($symb));
 6071:     return '';
 6072: }
 6073: 
 6074: =pod
 6075: 
 6076: =item scantron_form_start
 6077: 
 6078:     html hidden input for remembering all selected grading options
 6079: 
 6080: =cut
 6081: 
 6082: sub scantron_form_start {
 6083:     my ($max_bubble)=@_;
 6084:     my $result= <<SCANTRONFORM;
 6085: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
 6086:   <input type="hidden" name="selectpage" value="$env{'form.selectpage'}" />
 6087:   <input type="hidden" name="scantron_format" value="$env{'form.scantron_format'}" />
 6088:   <input type="hidden" name="scantron_selectfile" value="$env{'form.scantron_selectfile'}" />
 6089:   <input type="hidden" name="scantron_maxbubble" value="$max_bubble" />
 6090:   <input type="hidden" name="scantron_CODElist" value="$env{'form.scantron_CODElist'}" />
 6091:   <input type="hidden" name="scantron_CODEunique" value="$env{'form.scantron_CODEunique'}" />
 6092:   <input type="hidden" name="scantron_options_redo" value="$env{'form.scantron_options_redo'}" />
 6093:   <input type="hidden" name="scantron_options_ignore" value="$env{'form.scantron_options_ignore'}" />
 6094:   <input type="hidden" name="scantron_options_hidden" value="$env{'form.scantron_options_hidden'}" />
 6095: SCANTRONFORM
 6096: 
 6097:   my $line = 0;
 6098:     while (defined($env{"form.scantron.bubblelines.$line"})) {
 6099:        my $chunk =
 6100: 	   '<input type="hidden" name="scantron.bubblelines.'.$line.'" value="'.$env{"form.scantron.bubblelines.$line"}.'" />'."\n";
 6101:        $chunk .=
 6102: 	   '<input type="hidden" name="scantron.first_bubble_line.'.$line.'" value="'.$env{"form.scantron.first_bubble_line.$line"}.'" />'."\n";
 6103:        $chunk .= 
 6104:            '<input type="hidden" name="scantron.sub_bubblelines.'.$line.'" value="'.$env{"form.scantron.sub_bubblelines.$line"}.'" />'."\n";
 6105:        $chunk .=
 6106:            '<input type="hidden" name="scantron.responsetype.'.$line.'" value="'.$env{"form.scantron.responsetype.$line"}.'" />'."\n";
 6107:        $result .= $chunk;
 6108:        $line++;
 6109:    }
 6110:     return $result;
 6111: }
 6112: 
 6113: =pod
 6114: 
 6115: =item scantron_validate_file
 6116: 
 6117:     Dispatch routine for doing validation of a bubble sheet data file.
 6118: 
 6119:     Also processes any necessary information resets that need to
 6120:     occur before validation begins (ignore previous corrections,
 6121:     restarting the skipped records processing)
 6122: 
 6123: =cut
 6124: 
 6125: sub scantron_validate_file {
 6126:     my ($r) = @_;
 6127:     my ($symb)=&get_symb($r);
 6128:     if (!$symb) {return '';}
 6129:     my $default_form_data=&defaultFormData($symb);
 6130:     
 6131:     # do the detection of only doing skipped records first befroe we delete
 6132:     # them when doing the corrections reset
 6133:     if ($env{'form.scantron_options_redo'} ne 'redo_skipped_ready') {
 6134: 	&reset_skipping_status();
 6135:     }
 6136:     if ($env{'form.scantron_options_redo'} eq 'redo_skipped') {
 6137: 	&remember_current_skipped();
 6138: 	$env{'form.scantron_options_redo'}='redo_skipped_ready';
 6139:     }
 6140: 
 6141:     if ($env{'form.scantron_options_ignore'} eq 'ignore_corrections') {
 6142: 	&check_for_error($r,&scantron_remove_file('corrected'));
 6143: 	&check_for_error($r,&scantron_remove_file('skipped'));
 6144: 	&check_for_error($r,&scantron_remove_scan_data());
 6145: 	$env{'form.scantron_options_ignore'}='done';
 6146:     }
 6147: 
 6148:     if ($env{'form.scantron_corrections'}) {
 6149: 	&scantron_process_corrections($r);
 6150:     }
 6151:     $r->print('<p>'.&mt('Gathering necessary information.').'</p>');$r->rflush();
 6152:     #get the student pick code ready
 6153:     $r->print(&Apache::loncommon::studentbrowser_javascript());
 6154:     my $max_bubble=&scantron_get_maxbubble();
 6155:     my $result=&scantron_form_start($max_bubble).$default_form_data;
 6156:     $r->print($result);
 6157:     
 6158:     my @validate_phases=( 'sequence',
 6159: 			  'ID',
 6160: 			  'CODE',
 6161: 			  'doublebubble',
 6162: 			  'missingbubbles');
 6163:     if (!$env{'form.validatepass'}) {
 6164: 	$env{'form.validatepass'} = 0;
 6165:     }
 6166:     my $currentphase=$env{'form.validatepass'};
 6167: 
 6168: 
 6169:     my $stop=0;
 6170:     while (!$stop && $currentphase < scalar(@validate_phases)) {
 6171: 	$r->print(&mt('Validating '.$validate_phases[$currentphase]).'<br />');
 6172: 	$r->rflush();
 6173: 	my $which="scantron_validate_".$validate_phases[$currentphase];
 6174: 	{
 6175: 	    no strict 'refs';
 6176: 	    ($stop,$currentphase)=&$which($r,$currentphase);
 6177: 	}
 6178:     }
 6179:     if (!$stop) {
 6180: 	my $warning=&scantron_warning_screen('Start Grading');
 6181: 	$r->print(&mt('Validation process complete.').'<br />'.
 6182:                   $warning.
 6183:                   &mt('Perform verification for each student after storage of submissions?').
 6184:                   '&nbsp;<span class="LC_nobreak"><label>'.
 6185:                   '<input type="radio" name="verifyrecord" value="1" />'.&mt('Yes').'</label>'.
 6186:                   ('&nbsp;'x3).'<label>'.
 6187:                   '<input type="radio" name="verifyrecord" value="0" checked="checked" />'.&mt('No').
 6188:                   '</label></span><br />'.
 6189:                   &mt('Grading will take longer if you use verification.').'<br />'.
 6190:                   &mt("Alternatively, the 'Review scantron data' utility (see grading menu) can be used for all students after grading is complete.").'<br /><br />'.
 6191:                   '<input type="submit" name="submit" value="'.&mt('Start Grading').'" />'.
 6192:                   '<input type="hidden" name="command" value="scantron_process" />'."\n");
 6193:     } else {
 6194: 	$r->print('<input type="hidden" name="command" value="scantron_validate" />');
 6195: 	$r->print("<input type='hidden' name='validatepass' value='".$currentphase."' />");
 6196:     }
 6197:     if ($stop) {
 6198: 	if ($validate_phases[$currentphase] eq 'sequence') {
 6199: 	    $r->print('<input type="submit" name="submit" value="'.&mt('Ignore').' &rarr; " />');
 6200: 	    $r->print(' '.&mt('this error').' <br />');
 6201: 
 6202: 	    $r->print(" <p>".&mt("Or click the 'Grading Menu' button to start over.")."</p>");
 6203: 	} else {
 6204:             if ($validate_phases[$currentphase] eq 'doublebubble' || $validate_phases[$currentphase] eq 'missingbubbles') {
 6205: 	        $r->print('<input type="button" name="submitbutton" value="'.&mt('Continue').' &rarr;" onclick="javascript:verify_bubble_radio(this.form)" />');
 6206:             } else {
 6207:                 $r->print('<input type="submit" name="submit" value="'.&mt('Continue').' &rarr;" />');
 6208:             }
 6209: 	    $r->print(' '.&mt('using corrected info').' <br />');
 6210: 	    $r->print("<input type='submit' value='".&mt("Skip")."' name='scantron_skip_record' />");
 6211: 	    $r->print(" ".&mt("this scanline saving it for later."));
 6212: 	}
 6213:     }
 6214:     $r->print(" </form><br />".&show_grading_menu_form($symb));
 6215:     return '';
 6216: }
 6217: 
 6218: 
 6219: =pod
 6220: 
 6221: =item scantron_remove_file
 6222: 
 6223:    Removes the requested bubble sheet data file, makes sure that
 6224:    scantron_original_<filename> is never removed
 6225: 
 6226: 
 6227: =cut
 6228: 
 6229: sub scantron_remove_file {
 6230:     my ($which)=@_;
 6231:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 6232:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 6233:     my $file='scantron_';
 6234:     if ($which eq 'corrected' || $which eq 'skipped') {
 6235: 	$file.=$which.'_';
 6236:     } else {
 6237: 	return 'refused';
 6238:     }
 6239:     $file.=$env{'form.scantron_selectfile'};
 6240:     return &Apache::lonnet::removeuserfile($cname,$cdom,$file);
 6241: }
 6242: 
 6243: 
 6244: =pod
 6245: 
 6246: =item scantron_remove_scan_data
 6247: 
 6248:    Removes all scan_data correction for the requested bubble sheet
 6249:    data file.  (In the case that both the are doing skipped records we need
 6250:    to remember the old skipped lines for the time being so that element
 6251:    persists for a while.)
 6252: 
 6253: =cut
 6254: 
 6255: sub scantron_remove_scan_data {
 6256:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 6257:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 6258:     my @keys=&Apache::lonnet::getkeys('nohist_scantrondata',$cdom,$cname);
 6259:     my @todelete;
 6260:     my $filename=$env{'form.scantron_selectfile'};
 6261:     foreach my $key (@keys) {
 6262: 	if ($key=~/^\Q$filename\E_/) {
 6263: 	    if ($env{'form.scantron_options_redo'} eq 'redo_skipped_ready' &&
 6264: 		$key=~/remember_skipping/) {
 6265: 		next;
 6266: 	    }
 6267: 	    push(@todelete,$key);
 6268: 	}
 6269:     }
 6270:     my $result;
 6271:     if (@todelete) {
 6272: 	$result = &Apache::lonnet::del('nohist_scantrondata',
 6273: 				       \@todelete,$cdom,$cname);
 6274:     } else {
 6275: 	$result = 'ok';
 6276:     }
 6277:     return $result;
 6278: }
 6279: 
 6280: 
 6281: =pod
 6282: 
 6283: =item scantron_getfile
 6284: 
 6285:     Fetches the requested bubble sheet data file (all 3 versions), and
 6286:     the scan_data hash
 6287:   
 6288:   Arguments:
 6289:     None
 6290: 
 6291:   Returns:
 6292:     2 hash references
 6293: 
 6294:      - first one has 
 6295:          orig      -
 6296:          corrected -
 6297:          skipped   -  each of which points to an array ref of the specified
 6298:                       file broken up into individual lines
 6299:          count     - number of scanlines
 6300:  
 6301:      - second is the scan_data hash possible keys are
 6302:        ($number refers to scanline numbered $number and thus the key affects
 6303:         only that scanline
 6304:         $bubline refers to the specific bubble line element and the aspects
 6305:         refers to that specific bubble line element)
 6306: 
 6307:        $number.user - username:domain to use
 6308:        $number.CODE_ignore_dup 
 6309:                     - ignore the duplicate CODE error 
 6310:        $number.useCODE
 6311:                     - use the CODE in the scanline as is
 6312:        $number.no_bubble.$bubline
 6313:                     - it is valid that there is no bubbled in bubble
 6314:                       at $number $bubline
 6315:        remember_skipping
 6316:                     - a frozen hash containing keys of $number and values
 6317:                       of either 
 6318:                         1 - we are on a 'do skipped records pass' and plan
 6319:                             on processing this line
 6320:                         2 - we are on a 'do skipped records pass' and this
 6321:                             scanline has been marked to skip yet again
 6322: 
 6323: =cut
 6324: 
 6325: sub scantron_getfile {
 6326:     #FIXME really would prefer a scantron directory
 6327:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 6328:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 6329:     my $lines;
 6330:     $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
 6331: 		       'scantron_orig_'.$env{'form.scantron_selectfile'});
 6332:     my %scanlines;
 6333:     $scanlines{'orig'}=[(split("\n",$lines,-1))];
 6334:     my $temp=$scanlines{'orig'};
 6335:     $scanlines{'count'}=$#$temp;
 6336: 
 6337:     $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
 6338: 		       'scantron_corrected_'.$env{'form.scantron_selectfile'});
 6339:     if ($lines eq '-1') {
 6340: 	$scanlines{'corrected'}=[];
 6341:     } else {
 6342: 	$scanlines{'corrected'}=[(split("\n",$lines,-1))];
 6343:     }
 6344:     $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
 6345: 		       'scantron_skipped_'.$env{'form.scantron_selectfile'});
 6346:     if ($lines eq '-1') {
 6347: 	$scanlines{'skipped'}=[];
 6348:     } else {
 6349: 	$scanlines{'skipped'}=[(split("\n",$lines,-1))];
 6350:     }
 6351:     my @tmp=&Apache::lonnet::dump('nohist_scantrondata',$cdom,$cname);
 6352:     if ($tmp[0] =~ /^(error:|no_such_host)/) { @tmp=(); }
 6353:     my %scan_data = @tmp;
 6354:     return (\%scanlines,\%scan_data);
 6355: }
 6356: 
 6357: =pod
 6358: 
 6359: =item lonnet_putfile
 6360: 
 6361:    Wrapper routine to call &Apache::lonnet::finishuserfileupload
 6362: 
 6363:  Arguments:
 6364:    $contents - data to store
 6365:    $filename - filename to store $contents into
 6366: 
 6367:  Returns:
 6368:    result value from &Apache::lonnet::finishuserfileupload
 6369: 
 6370: =cut
 6371: 
 6372: sub lonnet_putfile {
 6373:     my ($contents,$filename)=@_;
 6374:     my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
 6375:     my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 6376:     $env{'form.sillywaytopassafilearound'}=$contents;
 6377:     &Apache::lonnet::finishuserfileupload($docuname,$docudom,'sillywaytopassafilearound',$filename);
 6378: 
 6379: }
 6380: 
 6381: =pod
 6382: 
 6383: =item scantron_putfile
 6384: 
 6385:     Stores the current version of the bubble sheet data files, and the
 6386:     scan_data hash. (Does not modify the original version only the
 6387:     corrected and skipped versions.
 6388: 
 6389:  Arguments:
 6390:     $scanlines - hash ref that looks like the first return value from
 6391:                  &scantron_getfile()
 6392:     $scan_data - hash ref that looks like the second return value from
 6393:                  &scantron_getfile()
 6394: 
 6395: =cut
 6396: 
 6397: sub scantron_putfile {
 6398:     my ($scanlines,$scan_data) = @_;
 6399:     #FIXME really would prefer a scantron directory
 6400:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 6401:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 6402:     if ($scanlines) {
 6403: 	my $prefix='scantron_';
 6404: # no need to update orig, shouldn't change
 6405: #   &lonnet_putfile(join("\n",@{$scanlines->{'orig'}}),$prefix.'orig_'.
 6406: #		    $env{'form.scantron_selectfile'});
 6407: 	&lonnet_putfile(join("\n",@{$scanlines->{'corrected'}}),
 6408: 			$prefix.'corrected_'.
 6409: 			$env{'form.scantron_selectfile'});
 6410: 	&lonnet_putfile(join("\n",@{$scanlines->{'skipped'}}),
 6411: 			$prefix.'skipped_'.
 6412: 			$env{'form.scantron_selectfile'});
 6413:     }
 6414:     &Apache::lonnet::put('nohist_scantrondata',$scan_data,$cdom,$cname);
 6415: }
 6416: 
 6417: =pod
 6418: 
 6419: =item scantron_get_line
 6420: 
 6421:    Returns the correct version of the scanline
 6422: 
 6423:  Arguments:
 6424:     $scanlines - hash ref that looks like the first return value from
 6425:                  &scantron_getfile()
 6426:     $scan_data - hash ref that looks like the second return value from
 6427:                  &scantron_getfile()
 6428:     $i         - number of the requested line (starts at 0)
 6429: 
 6430:  Returns:
 6431:    A scanline, (either the original or the corrected one if it
 6432:    exists), or undef if the requested scanline should be
 6433:    skipped. (Either because it's an skipped scanline, or it's an
 6434:    unskipped scanline and we are not doing a 'do skipped scanlines'
 6435:    pass.
 6436: 
 6437: =cut
 6438: 
 6439: sub scantron_get_line {
 6440:     my ($scanlines,$scan_data,$i)=@_;
 6441:     if (&should_be_skipped($scanlines,$scan_data,$i)) { return undef; }
 6442:     #if ($scanlines->{'skipped'}[$i]) { return undef; }
 6443:     if ($scanlines->{'corrected'}[$i]) {return $scanlines->{'corrected'}[$i];}
 6444:     return $scanlines->{'orig'}[$i]; 
 6445: }
 6446: 
 6447: =pod
 6448: 
 6449: =item scantron_todo_count
 6450: 
 6451:     Counts the number of scanlines that need processing.
 6452: 
 6453:  Arguments:
 6454:     $scanlines - hash ref that looks like the first return value from
 6455:                  &scantron_getfile()
 6456:     $scan_data - hash ref that looks like the second return value from
 6457:                  &scantron_getfile()
 6458: 
 6459:  Returns:
 6460:     $count - number of scanlines to process
 6461: 
 6462: =cut
 6463: 
 6464: sub get_todo_count {
 6465:     my ($scanlines,$scan_data)=@_;
 6466:     my $count=0;
 6467:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 6468: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 6469: 	if ($line=~/^[\s\cz]*$/) { next; }
 6470: 	$count++;
 6471:     }
 6472:     return $count;
 6473: }
 6474: 
 6475: =pod
 6476: 
 6477: =item scantron_put_line
 6478: 
 6479:     Updates the 'corrected' or 'skipped' versions of the bubble sheet
 6480:     data file.
 6481: 
 6482:  Arguments:
 6483:     $scanlines - hash ref that looks like the first return value from
 6484:                  &scantron_getfile()
 6485:     $scan_data - hash ref that looks like the second return value from
 6486:                  &scantron_getfile()
 6487:     $i         - line number to update
 6488:     $newline   - contents of the updated scanline
 6489:     $skip      - if true make the line for skipping and update the
 6490:                  'skipped' file
 6491: 
 6492: =cut
 6493: 
 6494: sub scantron_put_line {
 6495:     my ($scanlines,$scan_data,$i,$newline,$skip)=@_;
 6496:     if ($skip) {
 6497: 	$scanlines->{'skipped'}[$i]=$newline;
 6498: 	&start_skipping($scan_data,$i);
 6499: 	return;
 6500:     }
 6501:     $scanlines->{'corrected'}[$i]=$newline;
 6502: }
 6503: 
 6504: =pod
 6505: 
 6506: =item scantron_clear_skip
 6507: 
 6508:    Remove a line from the 'skipped' file
 6509: 
 6510:  Arguments:
 6511:     $scanlines - hash ref that looks like the first return value from
 6512:                  &scantron_getfile()
 6513:     $scan_data - hash ref that looks like the second return value from
 6514:                  &scantron_getfile()
 6515:     $i         - line number to update
 6516: 
 6517: =cut
 6518: 
 6519: sub scantron_clear_skip {
 6520:     my ($scanlines,$scan_data,$i)=@_;
 6521:     if (exists($scanlines->{'skipped'}[$i])) {
 6522: 	undef($scanlines->{'skipped'}[$i]);
 6523: 	return 1;
 6524:     }
 6525:     return 0;
 6526: }
 6527: 
 6528: =pod
 6529: 
 6530: =item scantron_filter_not_exam
 6531: 
 6532:    Filter routine used by &Apache::lonnavmaps::retrieveResources(), to
 6533:    filter out resources that are not marked as 'exam' mode
 6534: 
 6535: =cut
 6536: 
 6537: sub scantron_filter_not_exam {
 6538:     my ($curres)=@_;
 6539:     
 6540:     if (ref($curres) && $curres->is_problem() && !$curres->is_exam()) {
 6541: 	# if the user has asked to not have either hidden
 6542: 	# or 'randomout' controlled resources to be graded
 6543: 	# don't include them
 6544: 	if ($env{'form.scantron_options_hidden'} eq 'ignore_hidden'
 6545: 	    && $curres->randomout) {
 6546: 	    return 0;
 6547: 	}
 6548: 	return 1;
 6549:     }
 6550:     return 0;
 6551: }
 6552: 
 6553: =pod
 6554: 
 6555: =item scantron_validate_sequence
 6556: 
 6557:     Validates the selected sequence, checking for resource that are
 6558:     not set to exam mode.
 6559: 
 6560: =cut
 6561: 
 6562: sub scantron_validate_sequence {
 6563:     my ($r,$currentphase) = @_;
 6564: 
 6565:     my $navmap=Apache::lonnavmaps::navmap->new();
 6566:     my (undef,undef,$sequence)=
 6567: 	&Apache::lonnet::decode_symb($env{'form.selectpage'});
 6568: 
 6569:     my $map=$navmap->getResourceByUrl($sequence);
 6570: 
 6571:     $r->print('<input type="hidden" name="validate_sequence_exam"
 6572:                                     value="ignore" />');
 6573:     if ($env{'form.validate_sequence_exam'} ne 'ignore') {
 6574: 	my @resources=
 6575: 	    $navmap->retrieveResources($map,\&scantron_filter_not_exam,1,0);
 6576: 	if (@resources) {
 6577: 	    $r->print("<p>".&mt('Some resources in the sequence currently are not set to exam mode. Grading these resources currently may not work correctly.')."</p>");
 6578: 	    return (1,$currentphase);
 6579: 	}
 6580:     }
 6581: 
 6582:     return (0,$currentphase+1);
 6583: }
 6584: 
 6585: 
 6586: 
 6587: sub scantron_validate_ID {
 6588:     my ($r,$currentphase) = @_;
 6589:     
 6590:     #get student info
 6591:     my $classlist=&Apache::loncoursedata::get_classlist();
 6592:     my %idmap=&username_to_idmap($classlist);
 6593: 
 6594:     #get scantron line setup
 6595:     my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
 6596:     my ($scanlines,$scan_data)=&scantron_getfile();
 6597:     
 6598:     &scantron_get_maxbubble();	# parse needs the bubble_lines.. array.
 6599: 
 6600:     my %found=('ids'=>{},'usernames'=>{});
 6601:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 6602: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 6603: 	if ($line=~/^[\s\cz]*$/) { next; }
 6604: 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 6605: 						 $scan_data);
 6606: 	my $id=$$scan_record{'scantron.ID'};
 6607: 	my $found;
 6608: 	foreach my $checkid (keys(%idmap)) {
 6609: 	    if (lc($checkid) eq lc($id)) { $found=$checkid;last; }
 6610: 	}
 6611: 	if ($found) {
 6612: 	    my $username=$idmap{$found};
 6613: 	    if ($found{'ids'}{$found}) {
 6614: 		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
 6615: 					 $line,'duplicateID',$found);
 6616: 		return(1,$currentphase);
 6617: 	    } elsif ($found{'usernames'}{$username}) {
 6618: 		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
 6619: 					 $line,'duplicateID',$username);
 6620: 		return(1,$currentphase);
 6621: 	    }
 6622: 	    #FIXME store away line we previously saw the ID on to use above
 6623: 	    $found{'ids'}{$found}++;
 6624: 	    $found{'usernames'}{$username}++;
 6625: 	} else {
 6626: 	    if ($id =~ /^\s*$/) {
 6627: 		my $username=&scan_data($scan_data,"$i.user");
 6628: 		if (defined($username) && $found{'usernames'}{$username}) {
 6629: 		    &scantron_get_correction($r,$i,$scan_record,
 6630: 					     \%scantron_config,
 6631: 					     $line,'duplicateID',$username);
 6632: 		    return(1,$currentphase);
 6633: 		} elsif (!defined($username)) {
 6634: 		    &scantron_get_correction($r,$i,$scan_record,
 6635: 					     \%scantron_config,
 6636: 					     $line,'incorrectID');
 6637: 		    return(1,$currentphase);
 6638: 		}
 6639: 		$found{'usernames'}{$username}++;
 6640: 	    } else {
 6641: 		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
 6642: 					 $line,'incorrectID');
 6643: 		return(1,$currentphase);
 6644: 	    }
 6645: 	}
 6646:     }
 6647: 
 6648:     return (0,$currentphase+1);
 6649: }
 6650: 
 6651: 
 6652: sub scantron_get_correction {
 6653:     my ($r,$i,$scan_record,$scan_config,$line,$error,$arg)=@_;
 6654: #FIXME in the case of a duplicated ID the previous line, probably need
 6655: #to show both the current line and the previous one and allow skipping
 6656: #the previous one or the current one
 6657: 
 6658:     if ( $$scan_record{'scantron.PaperID'} =~ /\S/) {
 6659: 	$r->print("<p>".&mt("<b>An error was detected ($error)</b>".
 6660: 			    " for PaperID <tt>[_1]</tt>",
 6661: 			    $$scan_record{'scantron.PaperID'})."</p> \n");
 6662:     } else {
 6663: 	$r->print("<p>".&mt("<b>An error was detected ($error)</b>".
 6664: 			    " in scanline [_1] <pre>[_2]</pre>",
 6665: 			    $i,$line)."</p> \n");
 6666:     }
 6667:     my $message="<p>".&mt("The ID on the form is  <tt>[_1]</tt><br />".
 6668: 			  "The name on the paper is [_2],[_3]",
 6669: 			  $$scan_record{'scantron.ID'},
 6670: 			  $$scan_record{'scantron.LastName'},
 6671: 			  $$scan_record{'scantron.FirstName'})."</p>";
 6672: 
 6673:     $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
 6674:     $r->print('<input type="hidden" name="scantron_line" value="'.$i.'" />'."\n");
 6675:                            # Array populated for doublebubble or
 6676:     my @lines_to_correct;  # missingbubble errors to build javascript
 6677:                            # to validate radio button checking   
 6678: 
 6679:     if ($error =~ /ID$/) {
 6680: 	if ($error eq 'incorrectID') {
 6681: 	    $r->print("<p>".&mt("The encoded ID is not in the classlist").
 6682: 		      "</p>\n");
 6683: 	} elsif ($error eq 'duplicateID') {
 6684: 	    $r->print("<p>".&mt("The encoded ID has also been used by a previous paper [_1]",$arg)."</p>\n");
 6685: 	}
 6686: 	$r->print($message);
 6687: 	$r->print("<p>".&mt("How should I handle this?")." <br /> \n");
 6688: 	$r->print("\n<ul><li> ");
 6689: 	#FIXME it would be nice if this sent back the user ID and
 6690: 	#could do partial userID matches
 6691: 	$r->print(&Apache::loncommon::selectstudent_link('scantronupload',
 6692: 				       'scantron_username','scantron_domain'));
 6693: 	$r->print(": <input type='text' name='scantron_username' value='' />");
 6694: 	$r->print("\n@".
 6695: 		 &Apache::loncommon::select_dom_form($env{'request.role.domain'},'scantron_domain'));
 6696: 
 6697: 	$r->print('</li>');
 6698:     } elsif ($error =~ /CODE$/) {
 6699: 	if ($error eq 'incorrectCODE') {
 6700: 	    $r->print("<p>".&mt("The encoded CODE is not in the list of possible CODEs.")."</p>\n");
 6701: 	} elsif ($error eq 'duplicateCODE') {
 6702: 	    $r->print("<p>".&mt("The encoded CODE has also been used by a previous paper [_1], and CODEs are supposed to be unique.",join(', ',@{$arg}))."</p>\n");
 6703: 	}
 6704: 	$r->print("<p>".&mt("The CODE on the form is  <tt>'[_1]'</tt>",
 6705: 			    $$scan_record{'scantron.CODE'})."<br />\n");
 6706: 	$r->print($message);
 6707: 	$r->print("<p>".&mt("How should I handle this?")." <br /> \n");
 6708: 	$r->print("\n<br /> ");
 6709: 	my $i=0;
 6710: 	if ($error eq 'incorrectCODE' 
 6711: 	    && $$scan_record{'scantron.CODE'}=~/\S/ ) {
 6712: 	    my ($max,$closest)=&scantron_get_closely_matching_CODEs($arg,$$scan_record{'scantron.CODE'});
 6713: 	    if ($closest > 0) {
 6714: 		foreach my $testcode (@{$closest}) {
 6715: 		    my $checked='';
 6716: 		    if (!$i) { $checked=' checked="checked" '; }
 6717: 		    $r->print("
 6718:    <label>
 6719:        <input type='radio' name='scantron_CODE_resolution' value='use_closest_$i' $checked />
 6720:        ".&mt("Use the similar CODE [_1] instead.",
 6721: 	    "<b><tt>".$testcode."</tt></b>")."
 6722:     </label>
 6723:     <input type='hidden' name='scantron_CODE_closest_$i' value='$testcode' />");
 6724: 		    $r->print("\n<br />");
 6725: 		    $i++;
 6726: 		}
 6727: 	    }
 6728: 	}
 6729: 	if ($$scan_record{'scantron.CODE'}=~/\S/ ) {
 6730: 	    my $checked; if (!$i) { $checked=' checked="checked" '; }
 6731: 	    $r->print("
 6732:     <label>
 6733:         <input type='radio' name='scantron_CODE_resolution' value='use_unfound' $checked />
 6734:        ".&mt("Use the CODE [_1] that is was on the paper, ignoring the error.",
 6735: 	     "<b><tt>".$$scan_record{'scantron.CODE'}."</tt></b>")."
 6736:     </label>");
 6737: 	    $r->print("\n<br />");
 6738: 	}
 6739: 
 6740: 	$r->print(<<ENDSCRIPT);
 6741: <script type="text/javascript">
 6742: function change_radio(field) {
 6743:     var slct=document.scantronupload.scantron_CODE_resolution;
 6744:     var i;
 6745:     for (i=0;i<slct.length;i++) {
 6746:         if (slct[i].value==field) { slct[i].checked=true; }
 6747:     }
 6748: }
 6749: </script>
 6750: ENDSCRIPT
 6751: 	my $href="/adm/pickcode?".
 6752: 	   "form=".&escape("scantronupload").
 6753: 	   "&scantron_format=".&escape($env{'form.scantron_format'}).
 6754: 	   "&scantron_CODElist=".&escape($env{'form.scantron_CODElist'}).
 6755: 	   "&curCODE=".&escape($$scan_record{'scantron.CODE'}).
 6756: 	   "&scantron_selectfile=".&escape($env{'form.scantron_selectfile'});
 6757: 	if ($env{'form.scantron_CODElist'} =~ /\S/) { 
 6758: 	    $r->print("
 6759:     <label>
 6760:        <input type='radio' name='scantron_CODE_resolution' value='use_found' />
 6761:        ".&mt("[_1]Select[_2] a CODE from the list of all CODEs and use it.",
 6762: 	     "<a target='_blank' href='$href'>","</a>")."
 6763:     </label> 
 6764:     ".&mt("Selected CODE is [_1]","<input readonly='true' type='text' size='8' name='scantron_CODE_selectedvalue' onfocus=\"javascript:change_radio('use_found')\" onchange=\"javascript:change_radio('use_found')\" />"));
 6765: 	    $r->print("\n<br />");
 6766: 	}
 6767: 	$r->print("
 6768:     <label>
 6769:        <input type='radio' name='scantron_CODE_resolution' value='use_typed' />
 6770:        ".&mt("Use [_1] as the CODE.",
 6771: 	     "</label><input type='text' size='8' name='scantron_CODE_newvalue' onfocus=\"javascript:change_radio('use_typed')\" onkeypress=\"javascript:change_radio('use_typed')\" />"));
 6772: 	$r->print("\n<br /><br />");
 6773:     } elsif ($error eq 'doublebubble') {
 6774: 	$r->print("<p>".&mt("There have been multiple bubbles scanned for some question(s)")."</p>\n");
 6775: 
 6776: 	# The form field scantron_questions is acutally a list of line numbers.
 6777: 	# represented by this form so:
 6778: 
 6779: 	my $line_list = &questions_to_line_list($arg);
 6780: 
 6781: 	$r->print('<input type="hidden" name="scantron_questions" value="'.
 6782: 		  $line_list.'" />');
 6783: 	$r->print($message);
 6784: 	$r->print("<p>".&mt("Please indicate which bubble should be used for grading")."</p>");
 6785: 	foreach my $question (@{$arg}) {
 6786: 	    my @linenums = &prompt_for_corrections($r,$question,$scan_config,
 6787:                                                    $scan_record, $error);
 6788:             push(@lines_to_correct,@linenums);
 6789: 	}
 6790:         $r->print(&verify_bubbles_checked(@lines_to_correct));
 6791:     } elsif ($error eq 'missingbubble') {
 6792: 	$r->print("<p>".&mt("There have been <b>no</b> bubbles scanned for some question(s)")."</p>\n");
 6793: 	$r->print($message);
 6794: 	$r->print("<p>".&mt("Please indicate which bubble should be used for grading.")."</p>");
 6795: 	$r->print(&mt("Some questions have no scanned bubbles.")."\n");
 6796: 
 6797: 	# The form field scantron_questions is actually a list of line numbers not
 6798: 	# a list of question numbers. Therefore:
 6799: 	#
 6800: 	
 6801: 	my $line_list = &questions_to_line_list($arg);
 6802: 
 6803: 	$r->print('<input type="hidden" name="scantron_questions" value="'.
 6804: 		  $line_list.'" />');
 6805: 	foreach my $question (@{$arg}) {
 6806: 	    my @linenums = &prompt_for_corrections($r,$question,$scan_config,
 6807:                                                    $scan_record, $error);
 6808:             push(@lines_to_correct,@linenums);
 6809: 	}
 6810:         $r->print(&verify_bubbles_checked(@lines_to_correct));
 6811:     } else {
 6812: 	$r->print("\n<ul>");
 6813:     }
 6814:     $r->print("\n</li></ul>");
 6815: }
 6816: 
 6817: sub verify_bubbles_checked {
 6818:     my (@ansnums) = @_;
 6819:     my $ansnumstr = join('","',@ansnums);
 6820:     my $warning = &mt("A bubble or 'No bubble' selection has not been made for one or more lines.");
 6821:     my $output = (<<ENDSCRIPT);
 6822: <script type="text/javascript">
 6823: function verify_bubble_radio(form) {
 6824:     var ansnumArray = new Array ("$ansnumstr");
 6825:     var need_bubble_count = 0;
 6826:     for (var i=0; i<ansnumArray.length; i++) {
 6827:         if (form.elements["scantron_correct_Q_"+ansnumArray[i]].length > 1) {
 6828:             var bubble_picked = 0; 
 6829:             for (var j=0; j<form.elements["scantron_correct_Q_"+ansnumArray[i]].length; j++) {
 6830:                 if (form.elements["scantron_correct_Q_"+ansnumArray[i]][j].checked == true) {
 6831:                     bubble_picked = 1;
 6832:                 }
 6833:             }
 6834:             if (bubble_picked == 0) {
 6835:                 need_bubble_count ++;
 6836:             }
 6837:         }
 6838:     }
 6839:     if (need_bubble_count) {
 6840:         alert("$warning");
 6841:         return;
 6842:     }
 6843:     form.submit(); 
 6844: }
 6845: </script>
 6846: ENDSCRIPT
 6847:     return $output;
 6848: }
 6849: 
 6850: =pod
 6851: 
 6852: =item  questions_to_line_list
 6853: 
 6854: Converts a list of questions into a string of comma separated
 6855: line numbers in the answer sheet used by the questions.  This is
 6856: used to fill in the scantron_questions form field.
 6857: 
 6858:   Arguments:
 6859:      questions    - Reference to an array of questions.
 6860: 
 6861: =cut
 6862: 
 6863: 
 6864: sub questions_to_line_list {
 6865:     my ($questions) = @_;
 6866:     my @lines;
 6867: 
 6868:     foreach my $item (@{$questions}) {
 6869:         my $question = $item;
 6870:         my ($first,$count,$last);
 6871:         if ($item =~ /^(\d+)\.(\d+)$/) {
 6872:             $question = $1;
 6873:             my $subquestion = $2;
 6874:             $first = $first_bubble_line{$question-1} + 1;
 6875:             my @subans = split(/,/,$subdivided_bubble_lines{$question-1});
 6876:             my $subcount = 1;
 6877:             while ($subcount<$subquestion) {
 6878:                 $first += $subans[$subcount-1];
 6879:                 $subcount ++;
 6880:             }
 6881:             $count = $subans[$subquestion-1];
 6882:         } else {
 6883: 	    $first   = $first_bubble_line{$question-1} + 1;
 6884: 	    $count   = $bubble_lines_per_response{$question-1};
 6885:         }
 6886:         $last = $first+$count-1;
 6887:         push(@lines, ($first..$last));
 6888:     }
 6889:     return join(',', @lines);
 6890: }
 6891: 
 6892: =pod 
 6893: 
 6894: =item prompt_for_corrections
 6895: 
 6896: Prompts for a potentially multiline correction to the
 6897: user's bubbling (factors out common code from scantron_get_correction
 6898: for multi and missing bubble cases).
 6899: 
 6900:  Arguments:
 6901:    $r           - Apache request object.
 6902:    $question    - The question number to prompt for.
 6903:    $scan_config - The scantron file configuration hash.
 6904:    $scan_record - Reference to the hash that has the the parsed scanlines.
 6905:    $error       - Type of error
 6906: 
 6907:  Implicit inputs:
 6908:    %bubble_lines_per_response   - Starting line numbers for each question.
 6909:                                   Numbered from 0 (but question numbers are from
 6910:                                   1.
 6911:    %first_bubble_line           - Starting bubble line for each question.
 6912:    %subdivided_bubble_lines     - optionresponse, matchresponse and rankresponse 
 6913:                                   type problems render as separate sub-questions, 
 6914:                                   in exam mode. This hash contains a 
 6915:                                   comma-separated list of the lines per 
 6916:                                   sub-question.
 6917:    %responsetype_per_response   - essayresponse, formularesponse,
 6918:                                   stringresponse, imageresponse, reactionresponse,
 6919:                                   and organicresponse type problem parts can have
 6920:                                   multiple lines per response if the weight
 6921:                                   assigned exceeds 10.  In this case, only
 6922:                                   one bubble per line is permitted, but more 
 6923:                                   than one line might contain bubbles, e.g.
 6924:                                   bubbling of: line 1 - J, line 2 - J, 
 6925:                                   line 3 - B would assign 22 points.  
 6926: 
 6927: =cut
 6928: 
 6929: sub prompt_for_corrections {
 6930:     my ($r, $question, $scan_config, $scan_record, $error) = @_;
 6931:     my ($current_line,$lines);
 6932:     my @linenums;
 6933:     my $questionnum = $question;
 6934:     if ($question =~ /^(\d+)\.(\d+)$/) {
 6935:         $question = $1;
 6936:         $current_line = $first_bubble_line{$question-1} + 1 ;
 6937:         my $subquestion = $2;
 6938:         my @subans = split(/,/,$subdivided_bubble_lines{$question-1});
 6939:         my $subcount = 1;
 6940:         while ($subcount<$subquestion) {
 6941:             $current_line += $subans[$subcount-1];
 6942:             $subcount ++;
 6943:         }
 6944:         $lines = $subans[$subquestion-1];
 6945:     } else {
 6946:         $current_line = $first_bubble_line{$question-1} + 1 ;
 6947:         $lines        = $bubble_lines_per_response{$question-1};
 6948:     }
 6949:     if ($lines > 1) {
 6950:         $r->print(&mt('The group of bubble lines below responds to a single question.').'<br />');
 6951:         if (($responsetype_per_response{$question-1} eq 'essayresponse') ||
 6952:             ($responsetype_per_response{$question-1} eq 'formularesponse') ||
 6953:             ($responsetype_per_response{$question-1} eq 'stringresponse') ||
 6954:             ($responsetype_per_response{$question-1} eq 'imageresponse') ||
 6955:             ($responsetype_per_response{$question-1} eq 'reactionresponse') ||
 6956:             ($responsetype_per_response{$question-1} eq 'organicresponse')) {
 6957:             $r->print(&mt("Although this particular question type requires handgrading, the instructions for this question in the exam directed students to leave [quant,_1,line] blank on their scantron sheets.",$lines).'<br /><br />'.&mt('A non-zero score can be assigned to the student during scantron grading by selecting a bubble in at least one line.').'<br />'.&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.').'<br />'.&mt("To assign a score of zero for this question, mark all lines as 'No bubble'.").'<br /><br />');
 6958:         } else {
 6959:             $r->print(&mt("Select at most one bubble in a single line and select 'No Bubble' in all the other lines. ")."<br />");
 6960:         }
 6961:     }
 6962:     for (my $i =0; $i < $lines; $i++) {
 6963:         my $selected = $$scan_record{"scantron.$current_line.answer"};
 6964: 	&scantron_bubble_selector($r,$scan_config,$current_line, 
 6965: 	        		  $questionnum,$error,split('', $selected));
 6966:         push(@linenums,$current_line);
 6967: 	$current_line++;
 6968:     }
 6969:     if ($lines > 1) {
 6970: 	$r->print("<hr /><br />");
 6971:     }
 6972:     return @linenums;
 6973: }
 6974: 
 6975: =pod
 6976: 
 6977: =item scantron_bubble_selector
 6978:   
 6979:    Generates the html radiobuttons to correct a single bubble line
 6980:    possibly showing the existing the selected bubbles if known
 6981: 
 6982:  Arguments:
 6983:     $r           - Apache request object
 6984:     $scan_config - hash from &get_scantron_config()
 6985:     $line        - Number of the line being displayed.
 6986:     $questionnum - Question number (may include subquestion)
 6987:     $error       - Type of error.
 6988:     @selected    - Array of bubbles picked on this line.
 6989: 
 6990: =cut
 6991: 
 6992: sub scantron_bubble_selector {
 6993:     my ($r,$scan_config,$line,$questionnum,$error,@selected)=@_;
 6994:     my $max=$$scan_config{'Qlength'};
 6995: 
 6996:     my $scmode=$$scan_config{'Qon'};
 6997:     if ($scmode eq 'number' || $scmode eq 'letter') { $max=10; }	     
 6998: 
 6999:     my @alphabet=('A'..'Z');
 7000:     $r->print(&Apache::loncommon::start_data_table().
 7001:               &Apache::loncommon::start_data_table_row());
 7002:     $r->print('<td rowspan="2" class="LC_leftcol_header">'.$line.'</td>');
 7003:     for (my $i=0;$i<$max+1;$i++) {
 7004: 	$r->print("\n".'<td align="center">');
 7005: 	if ($selected[0] eq $alphabet[$i]) { $r->print('X'); shift(@selected) }
 7006: 	else { $r->print('&nbsp;'); }
 7007: 	$r->print('</td>');
 7008:     }
 7009:     $r->print(&Apache::loncommon::end_data_table_row().
 7010:               &Apache::loncommon::start_data_table_row());
 7011:     for (my $i=0;$i<$max;$i++) {
 7012: 	$r->print("\n".
 7013: 		  '<td><label><input type="radio" name="scantron_correct_Q_'.
 7014: 		  $line.'" value="'.$i.'" />'.$alphabet[$i]."</label></td>");
 7015:     }
 7016:     my $nobub_checked = ' ';
 7017:     if ($error eq 'missingbubble') {
 7018:         $nobub_checked = ' checked = "checked" ';
 7019:     }
 7020:     $r->print("\n".'<td><label><input type="radio" name="scantron_correct_Q_'.
 7021: 	      $line.'" value="none"'.$nobub_checked.'/>'.&mt('No bubble').
 7022:               '</label>'."\n".'<input type="hidden" name="scantron_questionnum_Q_'.
 7023:               $line.'" value="'.$questionnum.'" /></td>');
 7024:     $r->print(&Apache::loncommon::end_data_table_row().
 7025:               &Apache::loncommon::end_data_table());
 7026: }
 7027: 
 7028: =pod
 7029: 
 7030: =item num_matches
 7031: 
 7032:    Counts the number of characters that are the same between the two arguments.
 7033: 
 7034:  Arguments:
 7035:    $orig - CODE from the scanline
 7036:    $code - CODE to match against
 7037: 
 7038:  Returns:
 7039:    $count - integer count of the number of same characters between the
 7040:             two arguments
 7041: 
 7042: =cut
 7043: 
 7044: sub num_matches {
 7045:     my ($orig,$code) = @_;
 7046:     my @code=split(//,$code);
 7047:     my @orig=split(//,$orig);
 7048:     my $same=0;
 7049:     for (my $i=0;$i<scalar(@code);$i++) {
 7050: 	if ($code[$i] eq $orig[$i]) { $same++; }
 7051:     }
 7052:     return $same;
 7053: }
 7054: 
 7055: =pod
 7056: 
 7057: =item scantron_get_closely_matching_CODEs
 7058: 
 7059:    Cycles through all CODEs and finds the set that has the greatest
 7060:    number of same characters as the provided CODE
 7061: 
 7062:  Arguments:
 7063:    $allcodes - hash ref returned by &get_codes()
 7064:    $CODE     - CODE from the current scanline
 7065: 
 7066:  Returns:
 7067:    2 element list
 7068:     - first elements is number of how closely matching the best fit is 
 7069:       (5 means best set has 5 matching characters)
 7070:     - second element is an arrary ref containing the set of valid CODEs
 7071:       that best fit the passed in CODE
 7072: 
 7073: =cut
 7074: 
 7075: sub scantron_get_closely_matching_CODEs {
 7076:     my ($allcodes,$CODE)=@_;
 7077:     my @CODEs;
 7078:     foreach my $testcode (sort(keys(%{$allcodes}))) {
 7079: 	push(@{$CODEs[&num_matches($CODE,$testcode)]},$testcode);
 7080:     }
 7081: 
 7082:     return ($#CODEs,$CODEs[-1]);
 7083: }
 7084: 
 7085: =pod
 7086: 
 7087: =item get_codes
 7088: 
 7089:    Builds a hash which has keys of all of the valid CODEs from the selected
 7090:    set of remembered CODEs.
 7091: 
 7092:  Arguments:
 7093:   $old_name - name of the set of remembered CODEs
 7094:   $cdom     - domain of the course
 7095:   $cnum     - internal course name
 7096: 
 7097:  Returns:
 7098:   %allcodes - keys are the valid CODEs, values are all 1
 7099: 
 7100: =cut
 7101: 
 7102: sub get_codes {
 7103:     my ($old_name, $cdom, $cnum) = @_;
 7104:     if (!$old_name) {
 7105: 	$old_name=$env{'form.scantron_CODElist'};
 7106:     }
 7107:     if (!$cdom) {
 7108: 	$cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
 7109:     }
 7110:     if (!$cnum) {
 7111: 	$cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
 7112:     }
 7113:     my %result=&Apache::lonnet::get('CODEs',[$old_name,"type\0$old_name"],
 7114: 				    $cdom,$cnum);
 7115:     my %allcodes;
 7116:     if ($result{"type\0$old_name"} eq 'number') {
 7117: 	%allcodes=map {($_,1)} split(',',$result{$old_name});
 7118:     } else {
 7119: 	%allcodes=map {(&Apache::lonprintout::num_to_letters($_),1)} split(',',$result{$old_name});
 7120:     }
 7121:     return %allcodes;
 7122: }
 7123: 
 7124: =pod
 7125: 
 7126: =item scantron_validate_CODE
 7127: 
 7128:    Validates all scanlines in the selected file to not have any
 7129:    invalid or underspecified CODEs and that none of the codes are
 7130:    duplicated if this was requested.
 7131: 
 7132: =cut
 7133: 
 7134: sub scantron_validate_CODE {
 7135:     my ($r,$currentphase) = @_;
 7136:     my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
 7137:     if ($scantron_config{'CODElocation'} &&
 7138: 	$scantron_config{'CODEstart'} &&
 7139: 	$scantron_config{'CODElength'}) {
 7140: 	if (!defined($env{'form.scantron_CODElist'})) {
 7141: 	    &FIXME_blow_up()
 7142: 	}
 7143:     } else {
 7144: 	return (0,$currentphase+1);
 7145:     }
 7146:     
 7147:     my %usedCODEs;
 7148: 
 7149:     my %allcodes=&get_codes();
 7150: 
 7151:     &scantron_get_maxbubble();	# parse needs the lines per response array.
 7152: 
 7153:     my ($scanlines,$scan_data)=&scantron_getfile();
 7154:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 7155: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 7156: 	if ($line=~/^[\s\cz]*$/) { next; }
 7157: 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 7158: 						 $scan_data);
 7159: 	my $CODE=$$scan_record{'scantron.CODE'};
 7160: 	my $error=0;
 7161: 	if (!&Apache::lonnet::validCODE($CODE)) {
 7162: 	    &scantron_get_correction($r,$i,$scan_record,
 7163: 				     \%scantron_config,
 7164: 				     $line,'incorrectCODE',\%allcodes);
 7165: 	    return(1,$currentphase);
 7166: 	}
 7167: 	if (%allcodes && !exists($allcodes{$CODE}) 
 7168: 	    && !$$scan_record{'scantron.useCODE'}) {
 7169: 	    &scantron_get_correction($r,$i,$scan_record,
 7170: 				     \%scantron_config,
 7171: 				     $line,'incorrectCODE',\%allcodes);
 7172: 	    return(1,$currentphase);
 7173: 	}
 7174: 	if (exists($usedCODEs{$CODE}) 
 7175: 	    && $env{'form.scantron_CODEunique'} eq 'yes'
 7176: 	    && !$$scan_record{'scantron.CODE_ignore_dup'}) {
 7177: 	    &scantron_get_correction($r,$i,$scan_record,
 7178: 				     \%scantron_config,
 7179: 				     $line,'duplicateCODE',$usedCODEs{$CODE});
 7180: 	    return(1,$currentphase);
 7181: 	}
 7182: 	push(@{$usedCODEs{$CODE}},$$scan_record{'scantron.PaperID'});
 7183:     }
 7184:     return (0,$currentphase+1);
 7185: }
 7186: 
 7187: =pod
 7188: 
 7189: =item scantron_validate_doublebubble
 7190: 
 7191:    Validates all scanlines in the selected file to not have any
 7192:    bubble lines with multiple bubbles marked.
 7193: 
 7194: =cut
 7195: 
 7196: sub scantron_validate_doublebubble {
 7197:     my ($r,$currentphase) = @_;
 7198:     #get student info
 7199:     my $classlist=&Apache::loncoursedata::get_classlist();
 7200:     my %idmap=&username_to_idmap($classlist);
 7201: 
 7202:     #get scantron line setup
 7203:     my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
 7204:     my ($scanlines,$scan_data)=&scantron_getfile();
 7205:     &scantron_get_maxbubble();	# parse needs the bubble line array.
 7206: 
 7207:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 7208: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 7209: 	if ($line=~/^[\s\cz]*$/) { next; }
 7210: 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 7211: 						 $scan_data);
 7212: 	if (!defined($$scan_record{'scantron.doubleerror'})) { next; }
 7213: 	&scantron_get_correction($r,$i,$scan_record,\%scantron_config,$line,
 7214: 				 'doublebubble',
 7215: 				 $$scan_record{'scantron.doubleerror'});
 7216:     	return (1,$currentphase);
 7217:     }
 7218:     return (0,$currentphase+1);
 7219: }
 7220: 
 7221: 
 7222: sub scantron_get_maxbubble {
 7223:     if (defined($env{'form.scantron_maxbubble'}) &&
 7224: 	$env{'form.scantron_maxbubble'}) {
 7225: 	&restore_bubble_lines();
 7226: 	return $env{'form.scantron_maxbubble'};
 7227:     }
 7228: 
 7229:     my (undef, undef, $sequence) =
 7230: 	&Apache::lonnet::decode_symb($env{'form.selectpage'});
 7231: 
 7232:     my $navmap=Apache::lonnavmaps::navmap->new();
 7233:     my $map=$navmap->getResourceByUrl($sequence);
 7234:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 7235: 
 7236:     &Apache::lonxml::clear_problem_counter();
 7237: 
 7238:     my $uname       = $env{'form.student'};
 7239:     my $udom        = $env{'form.userdom'};
 7240:     my $cid         = $env{'request.course.id'};
 7241:     my $total_lines = 0;
 7242:     %bubble_lines_per_response = ();
 7243:     %first_bubble_line         = ();
 7244:     %subdivided_bubble_lines   = ();
 7245:     %responsetype_per_response = ();
 7246:   
 7247:     my $response_number = 0;
 7248:     my $bubble_line     = 0;
 7249:     foreach my $resource (@resources) {
 7250:         my ($analysis,$parts) = &scantron_partids_tograde($resource,$cid,$uname,$udom);
 7251:         if ((ref($analysis) eq 'HASH') && (ref($parts) eq 'ARRAY')) {
 7252: 	    foreach my $part_id (@{$parts}) {
 7253:                 my $lines;
 7254: 
 7255: 	        # TODO - make this a persistent hash not an array.
 7256: 
 7257:                 # optionresponse, matchresponse and rankresponse type items 
 7258:                 # render as separate sub-questions in exam mode.
 7259:                 if (($analysis->{$part_id.'.type'} eq 'optionresponse') ||
 7260:                     ($analysis->{$part_id.'.type'} eq 'matchresponse') ||
 7261:                     ($analysis->{$part_id.'.type'} eq 'rankresponse')) {
 7262:                     my ($numbub,$numshown);
 7263:                     if ($analysis->{$part_id.'.type'} eq 'optionresponse') {
 7264:                         if (ref($analysis->{$part_id.'.options'}) eq 'ARRAY') {
 7265:                             $numbub = scalar(@{$analysis->{$part_id.'.options'}});
 7266:                         }
 7267:                     } elsif ($analysis->{$part_id.'.type'} eq 'matchresponse') {
 7268:                         if (ref($analysis->{$part_id.'.items'}) eq 'ARRAY') {
 7269:                             $numbub = scalar(@{$analysis->{$part_id.'.items'}});
 7270:                         }
 7271:                     } elsif ($analysis->{$part_id.'.type'} eq 'rankresponse') {
 7272:                         if (ref($analysis->{$part_id.'.foils'}) eq 'ARRAY') {
 7273:                             $numbub = scalar(@{$analysis->{$part_id.'.foils'}});
 7274:                         }
 7275:                     }
 7276:                     if (ref($analysis->{$part_id.'.shown'}) eq 'ARRAY') {
 7277:                         $numshown = scalar(@{$analysis->{$part_id.'.shown'}});
 7278:                     }
 7279:                     my $bubbles_per_line = 10;
 7280:                     my $inner_bubble_lines = int($numbub/$bubbles_per_line);
 7281:                     if (($numbub % $bubbles_per_line) != 0) {
 7282:                         $inner_bubble_lines++;
 7283:                     }
 7284:                     for (my $i=0; $i<$numshown; $i++) {
 7285:                         $subdivided_bubble_lines{$response_number} .= 
 7286:                             $inner_bubble_lines.',';
 7287:                     }
 7288:                     $subdivided_bubble_lines{$response_number} =~ s/,$//;
 7289:                     $lines = $numshown * $inner_bubble_lines;
 7290:                 } else {
 7291:                     $lines = $analysis->{"$part_id.bubble_lines"};
 7292:                 } 
 7293: 
 7294:                 $first_bubble_line{$response_number} = $bubble_line;
 7295: 	        $bubble_lines_per_response{$response_number} = $lines;
 7296:                 $responsetype_per_response{$response_number} = 
 7297:                     $analysis->{$part_id.'.type'};
 7298: 	        $response_number++;
 7299: 
 7300: 	        $bubble_line +=  $lines;
 7301: 	        $total_lines +=  $lines;
 7302: 	    }
 7303:         }
 7304:     }
 7305:     &Apache::lonnet::delenv('scantron.');
 7306: 
 7307:     &save_bubble_lines();
 7308:     $env{'form.scantron_maxbubble'} =
 7309: 	$total_lines;
 7310:     return $env{'form.scantron_maxbubble'};
 7311: }
 7312: 
 7313: sub scantron_partids_tograde {
 7314:     my ($resource,$cid,$uname,$udom) = @_;
 7315:     my (%analysis,@parts); 
 7316: 
 7317:     if (ref($resource)) {
 7318:         my $symb = $resource->symb();
 7319:         my $result=&ssi_with_retries($resource->src(), $ssi_retries,
 7320:                                         ('symb' => $symb,
 7321:                                          'grade_target' => 'analyze',
 7322:                                          'grade_courseid' => $cid,
 7323:                                          'grade_domain' => $udom,
 7324:                                          'grade_username' => $uname));
 7325:         my (undef, $an) = split(/_HASH_REF__/,$result, 2);
 7326:         %analysis = &Apache::lonnet::str2hash($an);
 7327: 
 7328:         if (ref($analysis{'parts'}) eq 'ARRAY') {
 7329:             foreach my $part (@{$analysis{'parts'}}) {
 7330:                 my ($id,$respid) = split(/\./,$part);
 7331:                 if (!&Apache::loncommon::check_if_partid_hidden($id,$symb,$udom,$uname)) {
 7332:                     push(@parts,$part);
 7333:                 }
 7334:             }
 7335:         }
 7336:     }
 7337:     return (\%analysis,\@parts);
 7338: }
 7339: 
 7340: sub scantron_validate_missingbubbles {
 7341:     my ($r,$currentphase) = @_;
 7342:     #get student info
 7343:     my $classlist=&Apache::loncoursedata::get_classlist();
 7344:     my %idmap=&username_to_idmap($classlist);
 7345: 
 7346:     #get scantron line setup
 7347:     my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
 7348:     my ($scanlines,$scan_data)=&scantron_getfile();
 7349:     my $max_bubble=&scantron_get_maxbubble();
 7350:     if (!$max_bubble) { $max_bubble=2**31; }
 7351:     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 7352: 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 7353: 	if ($line=~/^[\s\cz]*$/) { next; }
 7354: 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 7355: 						 $scan_data);
 7356: 	if (!defined($$scan_record{'scantron.missingerror'})) { next; }
 7357: 	my @to_correct;
 7358: 	
 7359: 	# Probably here's where the error is...
 7360: 
 7361: 	foreach my $missing (@{$$scan_record{'scantron.missingerror'}}) {
 7362:             my $lastbubble;
 7363:             if ($missing =~ /^(\d+)\.(\d+)$/) {
 7364:                my $question = $1;
 7365:                my $subquestion = $2;
 7366:                if (!defined($first_bubble_line{$question -1})) { next; }
 7367:                my $first = $first_bubble_line{$question-1};
 7368:                my @subans = split(/,/,$subdivided_bubble_lines{$question-1});
 7369:                my $subcount = 1;
 7370:                while ($subcount<$subquestion) {
 7371:                    $first += $subans[$subcount-1];
 7372:                    $subcount ++;
 7373:                }
 7374:                my $count = $subans[$subquestion-1];
 7375:                $lastbubble = $first + $count;
 7376:             } else {
 7377:                 if (!defined($first_bubble_line{$missing - 1})) { next; }
 7378:                 $lastbubble = $first_bubble_line{$missing - 1} + $bubble_lines_per_response{$missing - 1};
 7379:             }
 7380:             if ($lastbubble > $max_bubble) { next; }
 7381: 	    push(@to_correct,$missing);
 7382: 	}
 7383: 	if (@to_correct) {
 7384: 	    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
 7385: 				     $line,'missingbubble',\@to_correct);
 7386: 	    return (1,$currentphase);
 7387: 	}
 7388: 
 7389:     }
 7390:     return (0,$currentphase+1);
 7391: }
 7392: 
 7393: 
 7394: sub scantron_process_students {
 7395:     my ($r) = @_;
 7396: 
 7397:     my (undef,undef,$sequence)=&Apache::lonnet::decode_symb($env{'form.selectpage'});
 7398:     my ($symb)=&get_symb($r);
 7399:     if (!$symb) {
 7400: 	return '';
 7401:     }
 7402:     my $default_form_data=&defaultFormData($symb);
 7403: 
 7404:     my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
 7405:     my ($scanlines,$scan_data)=&scantron_getfile();
 7406:     my $classlist=&Apache::loncoursedata::get_classlist();
 7407:     my %idmap=&username_to_idmap($classlist);
 7408:     my $navmap=Apache::lonnavmaps::navmap->new();
 7409:     my $map=$navmap->getResourceByUrl($sequence);
 7410:     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 7411: 
 7412:     my ($uname,$udom,%partids_by_symb);
 7413:     foreach my $resource (@resources) {
 7414:         my $ressymb = $resource->symb(); 
 7415:         my ($analysis,$parts) = 
 7416:             &scantron_partids_tograde($resource,$env{'request.course.id'},$uname,$udom);
 7417:         $partids_by_symb{$ressymb} = $parts;
 7418:     }
 7419: #    $r->print("geto ".scalar(@resources)."<br />");
 7420:     my $result= <<SCANTRONFORM;
 7421: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
 7422:   <input type="hidden" name="command" value="scantron_configphase" />
 7423:   $default_form_data
 7424: SCANTRONFORM
 7425:     $r->print($result);
 7426: 
 7427:     my @delayqueue;
 7428:     my (%completedstudents,%scandata);
 7429:     
 7430:     my $lock=&Apache::lonnet::set_lock(&mt('Grading bubblesheet exam'));
 7431:     my $count=&get_todo_count($scanlines,$scan_data);
 7432:     my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron Status',
 7433:  				    'Scantron Progress',$count,
 7434: 				    'inline',undef,'scantronupload');
 7435:     &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
 7436: 					  'Processing first student');
 7437:     $r->print('<br />');
 7438:     my $start=&Time::HiRes::time();
 7439:     my $i=-1;
 7440:     my $started;
 7441: 
 7442:     &scantron_get_maxbubble();	# Need the bubble lines array to parse.
 7443:     
 7444: 
 7445:     # If an ssi failed in scantron_get_maxbubble, put an error message out to
 7446:     # the user and return.
 7447: 
 7448:     if ($ssi_error) {
 7449: 	$r->print("</form>");
 7450: 	&ssi_print_error($r);
 7451: 	$r->print(&show_grading_menu_form($symb));
 7452:         &Apache::lonnet::remove_lock($lock);
 7453: 	return '';		# Dunno why the other returns return '' rather than just returning.
 7454:     }
 7455: 
 7456:     my %lettdig = &letter_to_digits();
 7457:     my $numletts = scalar(keys(%lettdig));
 7458: 
 7459:     while ($i<$scanlines->{'count'}) {
 7460:  	($uname,$udom)=('','');
 7461:  	$i++;
 7462:  	my $line=&scantron_get_line($scanlines,$scan_data,$i);
 7463:  	if ($line=~/^[\s\cz]*$/) { next; }
 7464: 	if ($started) {
 7465: 	    &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
 7466: 						     'last student');
 7467: 	}
 7468: 	$started=1;
 7469:  	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
 7470:  						 $scan_data);
 7471:  	unless ($uname=&scantron_find_student($scan_record,$scan_data,
 7472:  					      \%idmap,$i)) {
 7473:   	    &scantron_add_delay(\@delayqueue,$line,
 7474:  				'Unable to find a student that matches',1);
 7475:  	    next;
 7476:   	}
 7477:  	if (exists $completedstudents{$uname}) {
 7478:  	    &scantron_add_delay(\@delayqueue,$line,
 7479:  				'Student '.$uname.' has multiple sheets',2);
 7480:  	    next;
 7481:  	}
 7482:   	($uname,$udom)=split(/:/,$uname);
 7483: 
 7484: 	&Apache::lonxml::clear_problem_counter();
 7485:   	&Apache::lonnet::appenv($scan_record);
 7486: 
 7487: 	if (&scantron_clear_skip($scanlines,$scan_data,$i)) {
 7488: 	    &scantron_putfile($scanlines,$scan_data);
 7489: 	}
 7490: 	
 7491:         my $scancode;
 7492:         if ((exists($scan_record->{'scantron.CODE'})) &&
 7493:             (&Apache::lonnet::validCODE($scan_record->{'scantron.CODE'}))) {
 7494:             $scancode = $scan_record->{'scantron.CODE'};
 7495:         } else {
 7496:             $scancode = '';
 7497:         }
 7498: 
 7499:         if (&grade_student_bubbles($r,$uname,$udom,$scan_record,$scancode,
 7500:                                    @resources) eq 'ssi_error') {
 7501:             $ssi_error = 0; # So end of handler error message does not trigger.
 7502:             $r->print("</form>");
 7503:             &ssi_print_error($r);
 7504:             $r->print(&show_grading_menu_form($symb));
 7505:             &Apache::lonnet::remove_lock($lock);
 7506:             return '';      # Why return ''?  Beats me.
 7507:         }
 7508: 
 7509: 	$completedstudents{$uname}={'line'=>$line};
 7510:         if ($env{'form.verifyrecord'}) {
 7511:             my $lastpos = $env{'form.scantron_maxbubble'}*$scantron_config{'Qlength'};
 7512:             my $studentdata = substr($line,$scantron_config{'Qstart'}-1,$lastpos);
 7513:             chomp($studentdata);
 7514:             $studentdata =~ s/\r$//;
 7515:             my $studentrecord = '';
 7516:             my $counter = -1;
 7517:             foreach my $resource (@resources) {
 7518:                 ($counter,my $recording) =
 7519:                     &verify_scantron_grading($resource,$udom,$uname,$env{'request.course.id'},
 7520:                                              $counter,$studentdata,\%partids_by_symb,
 7521:                                              \%scantron_config,\%lettdig,$numletts);
 7522:                 $studentrecord .= $recording;
 7523:             }
 7524:             if ($studentrecord ne $studentdata) {
 7525:                 $counter = -1;
 7526:                 $studentrecord = '';
 7527:                 foreach my $resource (@resources) {
 7528:                     ($counter,my $recording) =
 7529:                         &verify_scantron_grading($resource,$udom,$uname,$env{'request.course.id'},
 7530:                                                  $counter,$studentdata,\%partids_by_symb,
 7531:                                                  \%scantron_config,\%lettdig,$numletts);
 7532:                     $studentrecord .= $recording;
 7533:                 }
 7534:                 if ($studentrecord ne $studentdata) {
 7535:                     $r->print('<p><span class="LC_error">');
 7536:                     if ($scancode eq '') {
 7537:                         $r->print(&mt('Mismatch grading bubble sheet for user: [_1] with ID: [_2].',
 7538:                                   $uname.':'.$udom,$scan_record->{'scantron.ID'}));
 7539:                     } else {
 7540:                         $r->print(&mt('Mismatch grading bubble sheet for user: [_1] with ID: [_2] and CODE: [_3].',
 7541:                                   $uname.':'.$udom,$scan_record->{'scantron.ID'},$scancode));
 7542:                     }
 7543:                     $r->print('</span><br />'.&Apache::loncommon::start_data_table()."\n".
 7544:                               &Apache::loncommon::start_data_table_header_row()."\n".
 7545:                               '<th>'.&mt('Source').'</th><th>'.&mt('Bubbled responses').'</th>'.
 7546:                               &Apache::loncommon::end_data_table_header_row()."\n".
 7547:                               &Apache::loncommon::start_data_table_row().
 7548:                               '<td>'.&mt('Bubble Sheet').'</td>'.
 7549:                               '<td><span class="LC_nobreak">'.$studentdata.'</span></td>'.
 7550:                               &Apache::loncommon::end_data_table_row().
 7551:                               &Apache::loncommon::start_data_table_row().
 7552:                               '<td>Stored submissions</td>'.
 7553:                               '<td><span class="LC_nobreak">'.$studentrecord.'</span></td>'."\n".
 7554:                               &Apache::loncommon::end_data_table_row().
 7555:                               &Apache::loncommon::end_data_table().'</p>');
 7556:                 } else {
 7557:                     $r->print('<br /><span class="LC_warning">'.
 7558:                              &mt('A second grading pass was needed for user: [_1] with ID: [_2], because a mismatch was seen on the first pass.',$uname.':'.$udom,$scan_record->{'scantron.ID'}).'<br />'.
 7559:                              &mt("As a consequence, this user's submission history records two tries.").
 7560:                                  '</span><br />');
 7561:                 }
 7562:             }
 7563:         }
 7564:         if (&Apache::loncommon::connection_aborted($r)) { last; }
 7565:     } continue {
 7566: 	&Apache::lonxml::clear_problem_counter();
 7567: 	&Apache::lonnet::delenv('scantron.');
 7568:     }
 7569:     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 7570:     &Apache::lonnet::remove_lock($lock);
 7571: #    my $lasttime = &Time::HiRes::time()-$start;
 7572: #    $r->print("<p>took $lasttime</p>");
 7573: 
 7574:     $r->print("</form>");
 7575:     $r->print(&show_grading_menu_form($symb));
 7576:     return '';
 7577: }
 7578: 
 7579: sub grade_student_bubbles {
 7580:     my ($r,$uname,$udom,$scan_record,$scancode,@resources) = @_;
 7581:     foreach my $resource (@resources) {
 7582:         my %form = ('submitted'     => 'scantron',
 7583:                     'grade_target'  => 'grade',
 7584:                     'grade_username'=> $uname,
 7585:                     'grade_domain'  => $udom,
 7586:                     'grade_courseid'=> $env{'request.course.id'},
 7587:                     'grade_symb'    => $resource->symb(),
 7588:                     'CODE'          => $scancode);
 7589:         my $result=&ssi_with_retries($resource->src(),$ssi_retries,%form);
 7590:         return 'ssi_error' if ($ssi_error);
 7591:         last if (&Apache::loncommon::connection_aborted($r));
 7592:     }
 7593:     return;
 7594: }
 7595: 
 7596: sub scantron_upload_scantron_data {
 7597:     my ($r)=@_;
 7598:     $r->print(&Apache::loncommon::coursebrowser_javascript($env{'request.role.domain'}));
 7599:     my $select_link=&Apache::loncommon::selectcourse_link('rules','courseid',
 7600: 							  'domainid',
 7601: 							  'coursename');
 7602:     my $domsel=&Apache::loncommon::select_dom_form($env{'request.role.domain'},
 7603: 						   'domainid');
 7604:     my $default_form_data=&defaultFormData(&get_symb($r,1));
 7605:     $r->print('
 7606: <script type="text/javascript" language="javascript">
 7607:     function checkUpload(formname) {
 7608: 	if (formname.upfile.value == "") {
 7609: 	    alert("'.&mt('Please use the browse button to select a file from your local directory.').'");
 7610: 	    return false;
 7611: 	}
 7612: 	formname.submit();
 7613:     }
 7614: </script>
 7615: 
 7616: <form enctype="multipart/form-data" action="/adm/grades" name="rules" method="post">
 7617: '.$default_form_data.'
 7618: <table>
 7619: <tr><td>'.$select_link.'                             </td></tr>
 7620: <tr><td>'.&mt('Course ID:').'     </td>
 7621:     <td><input name="courseid"   type="text" />      </td></tr>
 7622: <tr><td>'.&mt('Course Name:').'   </td>
 7623:     <td><input name="coursename" type="text" />      </td></tr>
 7624: <tr><td>'.&mt('Domain:').'        </td>
 7625:     <td>'.$domsel.'                                  </td></tr>
 7626: <tr><td>'.&mt('File to upload:').'</td>
 7627:     <td><input type="file" name="upfile" size="50" /></td></tr>
 7628: </table>
 7629: <input name="command" value="scantronupload_save" type="hidden" />
 7630: <input type="button" onClick="javascript:checkUpload(this.form);" value="'.&mt('Upload Scantron Data').'" />
 7631: </form>
 7632: ');
 7633:     return '';
 7634: }
 7635: 
 7636: 
 7637: sub scantron_upload_scantron_data_save {
 7638:     my($r)=@_;
 7639:     my ($symb)=&get_symb($r,1);
 7640:     my $doanotherupload=
 7641: 	'<br /><form action="/adm/grades" method="post">'."\n".
 7642: 	'<input type="hidden" name="command" value="scantronupload" />'."\n".
 7643: 	'<input type="submit" name="submit" value="'.&mt('Do Another Upload').'" />'."\n".
 7644: 	'</form>'."\n";
 7645:     if (!&Apache::lonnet::allowed('usc',$env{'form.domainid'}) &&
 7646: 	!&Apache::lonnet::allowed('usc',
 7647: 			    $env{'form.domainid'}.'_'.$env{'form.courseid'})) {
 7648: 	$r->print(&mt("You are not allowed to upload Scantron data to the requested course.")."<br />");
 7649: 	if ($symb) {
 7650: 	    $r->print(&show_grading_menu_form($symb));
 7651: 	} else {
 7652: 	    $r->print($doanotherupload);
 7653: 	}
 7654: 	return '';
 7655:     }
 7656:     my %coursedata=&Apache::lonnet::coursedescription($env{'form.domainid'}.'_'.$env{'form.courseid'});
 7657:     $r->print(&mt("Doing upload to [_1]",$coursedata{'description'})." <br />");
 7658:     my $fname=$env{'form.upfile.filename'};
 7659:     #FIXME
 7660:     #copied from lonnet::userfileupload()
 7661:     #make that function able to target a specified course
 7662:     # Replace Windows backslashes by forward slashes
 7663:     $fname=~s/\\/\//g;
 7664:     # Get rid of everything but the actual filename
 7665:     $fname=~s/^.*\/([^\/]+)$/$1/;
 7666:     # Replace spaces by underscores
 7667:     $fname=~s/\s+/\_/g;
 7668:     # Replace all other weird characters by nothing
 7669:     $fname=~s/[^\w\.\-]//g;
 7670:     # See if there is anything left
 7671:     unless ($fname) { return 'error: no uploaded file'; }
 7672:     my $uploadedfile=$fname;
 7673:     $fname='scantron_orig_'.$fname;
 7674:     if (length($env{'form.upfile'}) < 2) {
 7675: 	$r->print(&mt("<span class=\"LC_error\">Error:</span> The file you attempted to upload, [_1]  contained no information. Please check that you entered the correct filename.",'<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"')."</span>"));
 7676:     } else {
 7677: 	my $result=&Apache::lonnet::finishuserfileupload($env{'form.courseid'},$env{'form.domainid'},'upfile',$fname);
 7678: 	if ($result =~ m|^/uploaded/|) {
 7679: 	    $r->print(&mt("<span class=\"LC_success\">Success:</span> Successfully uploaded [_1] bytes of data into location [_2]",
 7680: 			  (length($env{'form.upfile'})-1),
 7681: 			  '<span class="LC_filename">'.$result."</span>"));
 7682: 	} else {
 7683: 	    $r->print(&mt("<span class=\"LC_error\">Error:</span> An error ([_1]) occurred when attempting to upload the file, [_2]",
 7684: 			  $result,
 7685: 			  '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"')."</span>"));
 7686: 
 7687: 	}
 7688:     }
 7689:     if ($symb) {
 7690: 	$r->print(&scantron_selectphase($r,$uploadedfile));
 7691:     } else {
 7692: 	$r->print($doanotherupload);
 7693:     }
 7694:     return '';
 7695: }
 7696: 
 7697: sub valid_file {
 7698:     my ($requested_file)=@_;
 7699:     foreach my $filename (sort(&scantron_filenames())) {
 7700: 	if ($requested_file eq $filename) { return 1; }
 7701:     }
 7702:     return 0;
 7703: }
 7704: 
 7705: sub scantron_download_scantron_data {
 7706:     my ($r)=@_;
 7707:     my $default_form_data=&defaultFormData(&get_symb($r,1));
 7708:     my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
 7709:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 7710:     my $file=$env{'form.scantron_selectfile'};
 7711:     if (! &valid_file($file)) {
 7712: 	$r->print('
 7713: 	<p>
 7714: 	    '.&mt('The requested file name was invalid.').'
 7715:         </p>
 7716: ');
 7717: 	$r->print(&show_grading_menu_form(&get_symb($r,1)));
 7718: 	return;
 7719:     }
 7720:     my $orig='/uploaded/'.$cdom.'/'.$cname.'/scantron_orig_'.$file;
 7721:     my $corrected='/uploaded/'.$cdom.'/'.$cname.'/scantron_corrected_'.$file;
 7722:     my $skipped='/uploaded/'.$cdom.'/'.$cname.'/scantron_skipped_'.$file;
 7723:     &Apache::lonnet::allowuploaded('/adm/grades',$orig);
 7724:     &Apache::lonnet::allowuploaded('/adm/grades',$corrected);
 7725:     &Apache::lonnet::allowuploaded('/adm/grades',$skipped);
 7726:     $r->print('
 7727:     <p>
 7728: 	'.&mt('[_1]Original[_2] file as uploaded by the scantron office.',
 7729: 	      '<a href="'.$orig.'">','</a>').'
 7730:     </p>
 7731:     <p>
 7732: 	'.&mt('[_1]Corrections[_2], a file of corrected records that were used in grading.',
 7733: 	      '<a href="'.$corrected.'">','</a>').'
 7734:     </p>
 7735:     <p>
 7736: 	'.&mt('[_1]Skipped[_2], a file of records that were skipped.',
 7737: 	      '<a href="'.$skipped.'">','</a>').'
 7738:     </p>
 7739: ');
 7740:     $r->print(&show_grading_menu_form(&get_symb($r,1)));
 7741:     return '';
 7742: }
 7743: 
 7744: sub checkscantron_results {
 7745:     my ($r) = @_;
 7746:     my ($symb)=&get_symb($r);
 7747:     if (!$symb) {return '';}
 7748:     my $grading_menu_button=&show_grading_menu_form($symb);
 7749:     my $cid = $env{'request.course.id'};
 7750:     my %lettdig = &letter_to_digits();
 7751:     my $numletts = scalar(keys(%lettdig));
 7752:     my $cnum = $env{'course.'.$cid.'.num'};
 7753:     my $cdom = $env{'course.'.$cid.'.domain'};
 7754:     my (undef, undef, $sequence) = &Apache::lonnet::decode_symb($env{'form.selectpage'});
 7755:     my %record;
 7756:     my %scantron_config =
 7757:         &Apache::grades::get_scantron_config($env{'form.scantron_format'});
 7758:     my ($scanlines,$scan_data)=&Apache::grades::scantron_getfile();
 7759:     my $classlist=&Apache::loncoursedata::get_classlist();
 7760:     my %idmap=&Apache::grades::username_to_idmap($classlist);
 7761:     my $navmap=Apache::lonnavmaps::navmap->new();
 7762:     my $map=$navmap->getResourceByUrl($sequence);
 7763:     my @resources=$navmap->retrieveResources($map,undef,1,0);
 7764:     my ($uname,$udom,%partids_by_symb);
 7765:     foreach my $resource (@resources) {
 7766:         my $ressymb = $resource->symb();
 7767:         my ($analysis,$parts) =
 7768:             &scantron_partids_tograde($resource,$env{'request.course.id'},$uname,$udom);
 7769:         $partids_by_symb{$ressymb} = $parts;
 7770:     }
 7771:     my (%scandata,%lastname,%bylast);
 7772:     $r->print('
 7773: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="checkscantron">'."\n");
 7774: 
 7775:     my @delayqueue;
 7776:     my %completedstudents;
 7777: 
 7778:     my $count=&Apache::grades::get_todo_count($scanlines,$scan_data);
 7779:     my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron/Submissions Comparison Status',
 7780:                                     'Progress of Scantron Data/Submission Records Comparison',$count,
 7781:                                     'inline',undef,'checkscantron');
 7782:     my ($username,$domain,$started);
 7783: 
 7784:     &Apache::grades::scantron_get_maxbubble();  # Need the bubble lines array to parse.
 7785: 
 7786:     &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
 7787:                                           'Processing first student');
 7788:     my $start=&Time::HiRes::time();
 7789:     my $i=-1;
 7790: 
 7791:     while ($i<$scanlines->{'count'}) {
 7792:         ($username,$domain,$uname)=('','','');
 7793:         $i++;
 7794:         my $line=&Apache::grades::scantron_get_line($scanlines,$scan_data,$i);
 7795:         if ($line=~/^[\s\cz]*$/) { next; }
 7796:         if ($started) {
 7797:             &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
 7798:                                                      'last student');
 7799:         }
 7800:         $started=1;
 7801:         my $scan_record=
 7802:             &Apache::grades::scantron_parse_scanline($line,$i,\%scantron_config,
 7803:                                                      $scan_data);
 7804:         unless ($uname=&Apache::grades::scantron_find_student($scan_record,$scan_data,
 7805:                                                               \%idmap,$i)) {
 7806:             &Apache::grades::scantron_add_delay(\@delayqueue,$line,
 7807:                                 'Unable to find a student that matches',1);
 7808:             next;
 7809:         }
 7810:         if (exists $completedstudents{$uname}) {
 7811:             &Apache::grades::scantron_add_delay(\@delayqueue,$line,
 7812:                                 'Student '.$uname.' has multiple sheets',2);
 7813:             next;
 7814:         }
 7815:         my $pid = $scan_record->{'scantron.ID'};
 7816:         $lastname{$pid} = $scan_record->{'scantron.LastName'};
 7817:         push(@{$bylast{$lastname{$pid}}},$pid);
 7818:         my $lastpos = $env{'form.scantron_maxbubble'}*$scantron_config{'Qlength'};
 7819:         $scandata{$pid} = substr($line,$scantron_config{'Qstart'}-1,$lastpos);
 7820:         chomp($scandata{$pid});
 7821:         $scandata{$pid} =~ s/\r$//;
 7822:         ($username,$domain)=split(/:/,$uname);
 7823:         my $counter = -1;
 7824:         foreach my $resource (@resources) {
 7825:             ($counter,my $recording) =
 7826:                 &verify_scantron_grading($resource,$domain,$username,$cid,$counter,
 7827:                                          $scandata{$pid},\%partids_by_symb,
 7828:                                          \%scantron_config,\%lettdig,$numletts);
 7829:             $record{$pid} .= $recording;
 7830:         }
 7831:     }
 7832:     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
 7833:     $r->print('<br />');
 7834:     my ($okstudents,$badstudents,$numstudents,$passed,$failed);
 7835:     $passed = 0;
 7836:     $failed = 0;
 7837:     $numstudents = 0;
 7838:     foreach my $last (sort(keys(%bylast))) {
 7839:         if (ref($bylast{$last}) eq 'ARRAY') {
 7840:             foreach my $pid (sort(@{$bylast{$last}})) {
 7841:                 my $showscandata = $scandata{$pid};
 7842:                 my $showrecord = $record{$pid};
 7843:                 $showscandata =~ s/\s/&nbsp;/g;
 7844:                 $showrecord =~ s/\s/&nbsp;/g;
 7845:                 if ($scandata{$pid} eq $record{$pid}) {
 7846:                     my $css_class = ($passed % 2)?'LC_odd_row':'LC_even_row';
 7847:                     $okstudents .= '<tr class="'.$css_class.'">'.
 7848: '<td>'.&mt('Scantron').'</td><td>'.$showscandata.'</td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
 7849: '</tr>'."\n".
 7850: '<tr class="'.$css_class.'">'."\n".
 7851: '<td>Submissions</td><td>'.$showrecord.'</td></tr>'."\n";
 7852:                     $passed ++;
 7853:                 } else {
 7854:                     my $css_class = ($failed % 2)?'LC_odd_row':'LC_even_row';
 7855:                     $badstudents .= '<tr class="'.$css_class.'"><td>'.&mt('Scantron').'</td><td><span class="LC_nobreak">'.$scandata{$pid}.'</span></td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
 7856: '</tr>'."\n".
 7857: '<tr class="'.$css_class.'">'."\n".
 7858: '<td>Submissions</td><td><span class="LC_nobreak">'.$record{$pid}.'</span></td>'."\n".
 7859: '</tr>'."\n";
 7860:                     $failed ++;
 7861:                 }
 7862:                 $numstudents ++;
 7863:             }
 7864:         }
 7865:     }
 7866:     $r->print('<p>'.&mt('Comparison of scantron data (including corrections) with corresponding submission records (most recent submission) for <b>[quant,_1,student]</b>  ([_2] scantron lines/student).',$numstudents,$env{'form.scantron_maxbubble'}).'</p>');
 7867:     $r->print('<p>'.&mt('Exact matches for <b>[quant,_1,student]</b>.',$passed).'<br />'.&mt('Discrepancies detected for <b>[quant,_1,student]</b>.',$failed).'</p>');
 7868:     if ($passed) {
 7869:         $r->print(&mt('Students with exact correspondence between scantron data and submissions are as follows:').'<br /><br />');
 7870:         $r->print(&Apache::loncommon::start_data_table()."\n".
 7871:                  &Apache::loncommon::start_data_table_header_row()."\n".
 7872:                  '<th>'.&mt('Source').'</th><th>'.&mt('Bubble records').'</th><th>'.&mt('Name').'</th><th>'.&mt('ID').'</th>'.
 7873:                  &Apache::loncommon::end_data_table_header_row()."\n".
 7874:                  $okstudents."\n".
 7875:                  &Apache::loncommon::end_data_table().'<br />');
 7876:     }
 7877:     if ($failed) {
 7878:         $r->print(&mt('Students with differences between scantron data and submissions are as follows:').'<br /><br />');
 7879:         $r->print(&Apache::loncommon::start_data_table()."\n".
 7880:                  &Apache::loncommon::start_data_table_header_row()."\n".
 7881:                  '<th>'.&mt('Source').'</th><th>'.&mt('Bubble records').'</th><th>'.&mt('Name').'</th><th>'.&mt('ID').'</th>'.
 7882:                  &Apache::loncommon::end_data_table_header_row()."\n".
 7883:                  $badstudents."\n".
 7884:                  &Apache::loncommon::end_data_table()).'<br />'.
 7885:                  &mt('Differences can occur if submissions were modified using manual grading after a scantron grading pass.').'<br />'.&mt('If unexpected discrepancies were detected, it is recommended that you inspect the original scantron sheets.');  
 7886:     }
 7887:     $r->print('</form><br />'.$grading_menu_button);
 7888:     return;
 7889: }
 7890: 
 7891: sub verify_scantron_grading {
 7892:     my ($resource,$domain,$username,$cid,$counter,$scandata,$partids_by_symb,
 7893:         $scantron_config,$lettdig,$numletts) = @_;
 7894:     my ($record,%expected,%startpos);
 7895:     return ($counter,$record) if (!ref($resource));
 7896:     return ($counter,$record) if (!$resource->is_problem());
 7897:     my $symb = $resource->symb();
 7898:     return ($counter,$record) if (ref($partids_by_symb) ne 'HASH');
 7899:     return ($counter,$record) if (ref($partids_by_symb->{$symb}) ne 'ARRAY');
 7900:     foreach my $part_id (@{$partids_by_symb->{$symb}}) {
 7901:         $counter ++;
 7902:         $expected{$part_id} = 0;
 7903:         if ($env{"form.scantron.sub_bubblelines.$counter"}) {
 7904:             my @sub_lines = split(/,/,$env{"form.scantron.sub_bubblelines.$counter"});
 7905:             foreach my $item (@sub_lines) {
 7906:                 $expected{$part_id} += $item;
 7907:             }
 7908:         } else {
 7909:             $expected{$part_id} = $env{"form.scantron.bubblelines.$counter"};
 7910:         }
 7911:         $startpos{$part_id} = $env{"form.scantron.first_bubble_line.$counter"};
 7912:     }
 7913:     if ($symb) {
 7914:         my %recorded;
 7915:         my (%returnhash) = &Apache::lonnet::restore($symb,$cid,$domain,$username);
 7916:         if ($returnhash{'version'}) {
 7917:             my %lasthash=();
 7918:             my $version;
 7919:             for ($version=1;$version<=$returnhash{'version'};$version++) {
 7920:                 foreach my $key (sort(split(/\:/,$returnhash{$version.':keys'}))) {
 7921:                     $lasthash{$key}=$returnhash{$version.':'.$key};
 7922:                 }
 7923:             }
 7924:             foreach my $key (keys(%lasthash)) {
 7925:                 if ($key =~ /\.scantron$/) {
 7926:                     my $value = &unescape($lasthash{$key});
 7927:                     my ($part_id) = ($key =~ /^resource\.(.+)\.scantron$/);
 7928:                     if ($value eq '') {
 7929:                         for (my $i=0; $i<$expected{$part_id}; $i++) {
 7930:                             for (my $j=0; $j<$scantron_config->{'length'}; $j++) {
 7931:                                 $recorded{$part_id} .= $scantron_config->{'Qoff'};
 7932:                             }
 7933:                         }
 7934:                     } else {
 7935:                         my @tocheck;
 7936:                         my @items = split(//,$value);
 7937:                         if (($scantron_config->{'Qon'} eq 'letter') ||
 7938:                             ($scantron_config->{'Qon'} eq 'number')) {
 7939:                             if (@items < $expected{$part_id}) {
 7940:                                 my $fragment = substr($scandata,$startpos{$part_id},$expected{$part_id});
 7941:                                 my @singles = split(//,$fragment);
 7942:                                 foreach my $pos (@singles) {
 7943:                                     if ($pos eq ' ') {
 7944:                                         push(@tocheck,$pos);
 7945:                                     } else {
 7946:                                         my $next = shift(@items);
 7947:                                         push(@tocheck,$next);
 7948:                                     }
 7949:                                 }
 7950:                             } else {
 7951:                                 @tocheck = @items;
 7952:                             }
 7953:                             foreach my $letter (@tocheck) {
 7954:                                 if ($scantron_config->{'Qon'} eq 'letter') {
 7955:                                     if ($letter !~ /^[A-J]$/) {
 7956:                                         $letter = $scantron_config->{'Qoff'};
 7957:                                     }
 7958:                                     $recorded{$part_id} .= $letter;
 7959:                                 } elsif ($scantron_config->{'Qon'} eq 'number') {
 7960:                                     my $digit;
 7961:                                     if ($letter !~ /^[A-J]$/) {
 7962:                                         $digit = $scantron_config->{'Qoff'};
 7963:                                     } else {
 7964:                                         $digit = $lettdig->{$letter};
 7965:                                     }
 7966:                                     $recorded{$part_id} .= $digit;
 7967:                                 }
 7968:                             }
 7969:                         } else {
 7970:                             @tocheck = @items;
 7971:                             for (my $i=0; $i<$expected{$part_id}; $i++) {
 7972:                                 my $curr_sub = shift(@tocheck);
 7973:                                 my $digit;
 7974:                                 if ($curr_sub =~ /^[A-J]$/) {
 7975:                                     $digit = $lettdig->{$curr_sub}-1;
 7976:                                 }
 7977:                                 if ($curr_sub eq 'J') {
 7978:                                     $digit += scalar($numletts);
 7979:                                 }
 7980:                                 for (my $j=0; $j<$scantron_config->{'Qlength'}; $j++) {
 7981:                                     if ($j == $digit) {
 7982:                                         $recorded{$part_id} .= $scantron_config->{'Qon'};
 7983:                                     } else {
 7984:                                         $recorded{$part_id} .= $scantron_config->{'Qoff'};
 7985:                                     }
 7986:                                 }
 7987:                             }
 7988:                         }
 7989:                     }
 7990:                 }
 7991:             }
 7992:         }
 7993:         foreach my $part_id (@{$partids_by_symb->{$symb}}) {
 7994:             if ($recorded{$part_id} eq '') {
 7995:                 for (my $i=0; $i<$expected{$part_id}; $i++) {
 7996:                     for (my $j=0; $j<$scantron_config->{'Qlength'}; $j++) {
 7997:                         $recorded{$part_id} .= $scantron_config->{'Qoff'};
 7998:                     }
 7999:                 }
 8000:             }
 8001:             $record .= $recorded{$part_id};
 8002:         }
 8003:     }
 8004:     return ($counter,$record);
 8005: }
 8006: 
 8007: sub letter_to_digits { 
 8008:     my %lettdig = (
 8009:                     A => 1,
 8010:                     B => 2,
 8011:                     C => 3,
 8012:                     D => 4,
 8013:                     E => 5,
 8014:                     F => 6,
 8015:                     G => 7,
 8016:                     H => 8,
 8017:                     I => 9,
 8018:                     J => 0,
 8019:                   );
 8020:     return %lettdig;
 8021: }
 8022: 
 8023: 
 8024: #-------- end of section for handling grading scantron forms -------
 8025: #
 8026: #-------------------------------------------------------------------
 8027: 
 8028: #-------------------------- Menu interface -------------------------
 8029: #
 8030: #--- Show a Grading Menu button - Calls the next routine ---
 8031: sub show_grading_menu_form {
 8032:     my ($symb)=@_;
 8033:     my $result.='<br /><form action="/adm/grades" method="post">'."\n".
 8034: 	'<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 8035: 	'<input type="hidden" name="saveState"  value="'.$env{'form.saveState'}.'" />'."\n".
 8036: 	'<input type="hidden" name="command" value="gradingmenu" />'."\n".
 8037: 	'<input type="submit" name="submit" value="'.&mt('Grading Menu').'" />'."\n".
 8038: 	'</form>'."\n";
 8039:     return $result;
 8040: }
 8041: 
 8042: # -- Retrieve choices for grading form
 8043: sub savedState {
 8044:     my %savedState = ();
 8045:     if ($env{'form.saveState'}) {
 8046: 	foreach (split(/:/,$env{'form.saveState'})) {
 8047: 	    my ($key,$value) = split(/=/,$_,2);
 8048: 	    $savedState{$key} = $value;
 8049: 	}
 8050:     }
 8051:     return \%savedState;
 8052: }
 8053: 
 8054: sub grading_menu {
 8055:     my ($request) = @_;
 8056:     my ($symb)=&get_symb($request);
 8057:     if (!$symb) {return '';}
 8058:     my $probTitle = &Apache::lonnet::gettitle($symb);
 8059:     my ($table,undef,$hdgrade) = &showResourceInfo($symb,$probTitle);
 8060: 
 8061:     $request->print($table);
 8062:     my %fields = ('symb'=>&Apache::lonenc::check_encrypt($symb),
 8063:                   'handgrade'=>$hdgrade,
 8064:                   'probTitle'=>$probTitle,
 8065:                   'command'=>'submit_options',
 8066:                   'saveState'=>"",
 8067:                   'gradingMenu'=>1,
 8068:                   'showgrading'=>"yes");
 8069:     
 8070:     my $url1 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 8071:     
 8072:     $fields{'command'} = 'csvform';
 8073:     my $url2 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 8074:     
 8075:     $fields{'command'} = 'processclicker';
 8076:     my $url3 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 8077:     
 8078:     $fields{'command'} = 'scantron_selectphase';
 8079:     my $url4 = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 8080:     
 8081:     my @menu = ({	categorytitle=>'Course Grading',
 8082:             items =>[
 8083:                         {	linktext => 'Manual Grading/View Submissions',
 8084:                     		url => $url1,
 8085:                     		permission => 'F',
 8086:                     		icon => 'edit-find-replace.png',
 8087:                     		linktitle => 'Start the process of hand grading submissions.'
 8088:                         },
 8089:                 	    {	linktext => 'Upload Scores',
 8090:                     		url => $url2,
 8091:                     		permission => 'F',
 8092:                     		icon => 'uploadscores.png',
 8093:                     		linktitle => 'Specify a file containing the class scores for current resource.'
 8094:                 	    },
 8095:                 	    {	linktext => 'Process Clicker',
 8096:                     		url => $url3,
 8097:                     		permission => 'F',
 8098:                     		icon => 'addClickerInfoFile.png',
 8099:                     		linktitle => 'Specify a file containing the clicker information for this resource.'
 8100:                 	    },
 8101:                 	    {	linktext => 'Grade/Manage/Review Scantron Forms',
 8102:                     		url => $url4,
 8103:                     		permission => 'F',
 8104:                     		icon => 'stat.png',
 8105:                     		linktitle => 'Grade scantron exams, upload/download scantron data files, and review previously graded scantron exams.'
 8106:                 	    }
 8107:                     ]
 8108:             });
 8109: 
 8110:     #$fields{'command'} = 'verify';
 8111:     #$url = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
 8112:     #
 8113:     # Create the menu
 8114:     my $Str;
 8115:     # $Str .= '<h2>'.&mt('Please select a grading task').'</h2>';
 8116:     $Str .= '<form method="post" action="" name="gradingMenu">';
 8117:     $Str .= '<input type="hidden" name="command" value="" />'.
 8118:     	'<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 8119: 	'<input type="hidden" name="handgrade"   value="'.$hdgrade.'" />'."\n".
 8120: 	'<input type="hidden" name="probTitle"   value="'.$probTitle.'" />'."\n".
 8121: 	'<input type="hidden" name="saveState"   value="" />'."\n".
 8122: 	'<input type="hidden" name="gradingMenu" value="1" />'."\n".
 8123: 	'<input type="hidden" name="showgrading" value="yes" />'."\n";
 8124: 
 8125:     $Str .= Apache::lonhtmlcommon::generate_menu(@menu);
 8126:     #$menudata->{'jscript'}
 8127:     $Str .='<hr /><input type="button" value="'.&mt('Verify Receipt').'" '.
 8128:         ' onClick="javascript:checkChoice(document.forms.gradingMenu,\'5\',\'verify\')" '.
 8129:         ' /> '.
 8130:         &Apache::lonnet::recprefix($env{'request.course.id'}).
 8131:         '-<input type="text" name="receipt" size="4" onChange="javascript:checkReceiptNo(this.form,\'OK\')" />';
 8132: 
 8133:     $Str .="</form>\n";
 8134:     my $receiptalert = &mt("Please enter a receipt number given by a student in the receipt box.");
 8135:     $request->print(<<GRADINGMENUJS);
 8136: <script type="text/javascript" language="javascript">
 8137:     function checkChoice(formname,val,cmdx) {
 8138: 	if (val <= 2) {
 8139: 	    var cmd = radioSelection(formname.radioChoice);
 8140: 	    var cmdsave = cmd;
 8141: 	} else {
 8142: 	    cmd = cmdx;
 8143: 	    cmdsave = 'submission';
 8144: 	}
 8145: 	formname.command.value = cmd;
 8146: 	if (val < 5) formname.submit();
 8147: 	if (val == 5) {
 8148: 	    if (!checkReceiptNo(formname,'notOK')) { 
 8149: 	        return false;
 8150: 	    } else {
 8151: 	        formname.submit();
 8152: 	    }
 8153: 	}
 8154:     }
 8155: 
 8156:     function checkReceiptNo(formname,nospace) {
 8157: 	var receiptNo = formname.receipt.value;
 8158: 	var checkOpt = false;
 8159: 	if (nospace == "OK" && isNaN(receiptNo)) {checkOpt = true;}
 8160: 	if (nospace == "notOK" && (isNaN(receiptNo) || receiptNo == "")) {checkOpt = true;}
 8161: 	if (checkOpt) {
 8162: 	    alert("$receiptalert");
 8163: 	    formname.receipt.value = "";
 8164: 	    formname.receipt.focus();
 8165: 	    return false;
 8166: 	}
 8167: 	return true;
 8168:     }
 8169: </script>
 8170: GRADINGMENUJS
 8171:     &commonJSfunctions($request);
 8172:     return $Str;    
 8173: }
 8174: 
 8175: 
 8176: #--- Displays the submissions first page -------
 8177: sub submit_options {
 8178:     my ($request) = @_;
 8179:     my ($symb)=&get_symb($request);
 8180:     if (!$symb) {return '';}
 8181:     my $probTitle = &Apache::lonnet::gettitle($symb);
 8182: 
 8183:     my $receiptalert = &mt("Please enter a receipt number given by a student in the receipt box."); 
 8184:     $request->print(<<GRADINGMENUJS);
 8185: <script type="text/javascript" language="javascript">
 8186:     function checkChoice(formname,val,cmdx) {
 8187: 	if (val <= 2) {
 8188: 	    var cmd = radioSelection(formname.radioChoice);
 8189: 	    var cmdsave = cmd;
 8190: 	} else {
 8191: 	    cmd = cmdx;
 8192: 	    cmdsave = 'submission';
 8193: 	}
 8194: 	formname.command.value = cmd;
 8195: 	formname.saveState.value = "saveCmd="+cmdsave+":saveSec="+pullDownSelection(formname.section)+
 8196: 	    ":saveSub="+pullDownSelection(formname.submitonly)+":saveStatus="+pullDownSelection(formname.Status);
 8197: 	if (val < 5) formname.submit();
 8198: 	if (val == 5) {
 8199: 	    if (!checkReceiptNo(formname,'notOK')) { return false;}
 8200: 	    formname.submit();
 8201: 	}
 8202: 	if (val < 7) formname.submit();
 8203:     }
 8204: 
 8205:     function checkReceiptNo(formname,nospace) {
 8206: 	var receiptNo = formname.receipt.value;
 8207: 	var checkOpt = false;
 8208: 	if (nospace == "OK" && isNaN(receiptNo)) {checkOpt = true;}
 8209: 	if (nospace == "notOK" && (isNaN(receiptNo) || receiptNo == "")) {checkOpt = true;}
 8210: 	if (checkOpt) {
 8211: 	    alert("$receiptalert");
 8212: 	    formname.receipt.value = "";
 8213: 	    formname.receipt.focus();
 8214: 	    return false;
 8215: 	}
 8216: 	return true;
 8217:     }
 8218: </script>
 8219: GRADINGMENUJS
 8220:     &commonJSfunctions($request);
 8221:     my ($table,undef,$hdgrade) = &showResourceInfo($symb,$probTitle);
 8222:     my $result;
 8223:     my (undef,$sections) = &getclasslist('all','0');
 8224:     my $savedState = &savedState();
 8225:     my $saveCmd = ($$savedState{'saveCmd'} eq '' ? 'submission' : $$savedState{'saveCmd'});
 8226:     my $saveSec = ($$savedState{'saveSec'} eq '' ? 'all' : $$savedState{'saveSec'});
 8227:     my $saveSub = ($$savedState{'saveSub'} eq '' ? 'all' : $$savedState{'saveSub'});
 8228:     my $saveStatus = ($$savedState{'saveStatus'} eq '' ? 'Active' : $$savedState{'saveStatus'});
 8229: 
 8230:     # Preselect sections
 8231:     my $selsec="";
 8232:     if (ref($sections)) {
 8233:         foreach my $section (sort(@$sections)) {
 8234:             $selsec.='<option value="'.$section.'" '.
 8235:                 ($saveSec eq $section ? 'selected="selected"':'').'>'.$section.'</option>'."\n";
 8236:         }
 8237:     }
 8238: 
 8239:     $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
 8240: 	'<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
 8241: 	'<input type="hidden" name="handgrade"   value="'.$hdgrade.'" />'."\n".
 8242: 	'<input type="hidden" name="probTitle"   value="'.$probTitle.'" />'."\n".
 8243: 	'<input type="hidden" name="command"     value="" />'."\n".
 8244: 	'<input type="hidden" name="saveState"   value="" />'."\n".
 8245: 	'<input type="hidden" name="gradingMenu" value="1" />'."\n".
 8246: 	'<input type="hidden" name="showgrading" value="yes" />'."\n";
 8247: 
 8248:     $result.='
 8249: <h2>
 8250:   '.&mt('Grade Current Resource').'
 8251: </h2>
 8252: <div>
 8253:   '.$table.'
 8254: </div>
 8255: 
 8256: <div class="LC_columnSection">
 8257:   
 8258:     <fieldset>
 8259:       <legend>
 8260:        '.&mt('Sections').'
 8261:       </legend>
 8262:       <select name="section" multiple="multiple" size="5">'."\n";
 8263:     $result.= $selsec;
 8264:     $result.= '<option value="all" '.($saveSec eq 'all' ? 'selected="selected"' : ''). '>all</option></select> &nbsp; ';
 8265:     $result.='
 8266:     </fieldset>
 8267:   
 8268:     <fieldset>
 8269:       <legend>
 8270:         '.&mt('Groups').'
 8271:       </legend>
 8272:       '.&Apache::lonstatistics::GroupSelect('group','multiple',5).'
 8273:     </fieldset>
 8274:   
 8275:     <fieldset>
 8276:       <legend>
 8277:         '.&mt('Access Status').'
 8278:       </legend>
 8279:       '.&Apache::lonhtmlcommon::StatusOptions($saveStatus,undef,5,undef,'mult').'
 8280:     </fieldset>
 8281:   
 8282:     <fieldset>
 8283:       <legend>
 8284:         '.&mt('Submission Status').'
 8285:       </legend>
 8286:       <select name="submitonly" size="5">
 8287: 	         <option value="yes" '.      ($saveSub eq 'yes'       ? 'selected="selected"' : '').'>'.&mt('with submissions').'</option>
 8288: 	         <option value="queued" '.   ($saveSub eq 'queued'    ? 'selected="selected"' : '').'>'.&mt('in grading queue').'</option>
 8289: 	         <option value="graded" '.   ($saveSub eq 'graded'    ? 'selected="selected"' : '').'>'.&mt('with ungraded submissions').'</option>
 8290: 	         <option value="incorrect" '.($saveSub eq 'incorrect' ? 'selected="selected"' : '').'>'.&mt('with incorrect submissions').'</option>
 8291:                  <option value="all" '.      ($saveSub eq 'all'       ? 'selected="selected"' : '').'>'.&mt('with any status').'</option>
 8292:       </select>
 8293:     </fieldset>
 8294:   
 8295: </div>
 8296: 
 8297: <br />
 8298:           <div>
 8299:             <div>
 8300:               <label>
 8301:                 <input type="radio" name="radioChoice" value="submission" '.
 8302:                   ($saveCmd eq 'submission' ? 'checked="checked"' : '').' /> '.
 8303:              &mt('Select individual students to grade and view submissions.').'
 8304: 	      </label> 
 8305:             </div>
 8306:             <div>
 8307: 	      <label>
 8308:                 <input type="radio" name="radioChoice" value="viewgrades" '.
 8309:                   ($saveCmd eq 'viewgrades' ? 'checked="checked"' : '').' /> '.
 8310:                     &mt('Grade all selected students in a grading table.').'
 8311:               </label>
 8312:             </div>
 8313:             <div>
 8314: 	      <input type="button" onClick="javascript:checkChoice(this.form,\'2\');" value="'.&mt('Next').' &rarr;" />
 8315:             </div>
 8316:           </div>
 8317: 
 8318: 
 8319:         <h2>
 8320:          '.&mt('Grade Complete Folder for One Student').'
 8321:         </h2>
 8322:         <div>
 8323:             <div>
 8324:               <label>
 8325:                 <input type="radio" name="radioChoice" value="pickStudentPage" '.
 8326: 	  ($saveCmd eq 'pickStudentPage' ? 'checked="checked"' : '').' /> '.
 8327:   &mt('The <b>complete</b> page/sequence/folder: For one student').'
 8328:               </label>
 8329:             </div>
 8330:             <div>
 8331: 	      <input type="button" onClick="javascript:checkChoice(this.form,\'2\');" value="'.&mt('Next').' &rarr;" />
 8332:             </div>
 8333:         </div>
 8334:   </form>';
 8335:     $result .= &show_grading_menu_form($symb);
 8336:     return $result;
 8337: }
 8338: 
 8339: sub reset_perm {
 8340:     undef(%perm);
 8341: }
 8342: 
 8343: sub init_perm {
 8344:     &reset_perm();
 8345:     foreach my $test_perm ('vgr','mgr','opa') {
 8346: 
 8347: 	my $scope = $env{'request.course.id'};
 8348: 	if (!($perm{$test_perm}=&Apache::lonnet::allowed($test_perm,$scope))) {
 8349: 
 8350: 	    $scope .= '/'.$env{'request.course.sec'};
 8351: 	    if ( $perm{$test_perm}=
 8352: 		 &Apache::lonnet::allowed($test_perm,$scope)) {
 8353: 		$perm{$test_perm.'_section'}=$env{'request.course.sec'};
 8354: 	    } else {
 8355: 		delete($perm{$test_perm});
 8356: 	    }
 8357: 	}
 8358:     }
 8359: }
 8360: 
 8361: sub gather_clicker_ids {
 8362:     my %clicker_ids;
 8363: 
 8364:     my $classlist = &Apache::loncoursedata::get_classlist();
 8365: 
 8366:     # Set up a couple variables.
 8367:     my $username_idx = &Apache::loncoursedata::CL_SNAME();
 8368:     my $domain_idx   = &Apache::loncoursedata::CL_SDOM();
 8369:     my $status_idx   = &Apache::loncoursedata::CL_STATUS();
 8370: 
 8371:     foreach my $student (keys(%$classlist)) {
 8372:         if ($classlist->{$student}->[$status_idx] ne 'Active') { next; }
 8373:         my $username = $classlist->{$student}->[$username_idx];
 8374:         my $domain   = $classlist->{$student}->[$domain_idx];
 8375:         my $clickers =
 8376: 	    (&Apache::lonnet::userenvironment($domain,$username,'clickers'))[1];
 8377:         foreach my $id (split(/\,/,$clickers)) {
 8378:             $id=~s/^[\#0]+//;
 8379:             $id=~s/[\-\:]//g;
 8380:             if (exists($clicker_ids{$id})) {
 8381: 		$clicker_ids{$id}.=','.$username.':'.$domain;
 8382:             } else {
 8383: 		$clicker_ids{$id}=$username.':'.$domain;
 8384:             }
 8385:         }
 8386:     }
 8387:     return %clicker_ids;
 8388: }
 8389: 
 8390: sub gather_adv_clicker_ids {
 8391:     my %clicker_ids;
 8392:     my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
 8393:     my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
 8394:     my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
 8395:     foreach my $element (sort(keys(%coursepersonnel))) {
 8396:         foreach my $person (split(/\,/,$coursepersonnel{$element})) {
 8397:             my ($puname,$pudom)=split(/\:/,$person);
 8398:             my $clickers =
 8399: 		(&Apache::lonnet::userenvironment($pudom,$puname,'clickers'))[1];
 8400:             foreach my $id (split(/\,/,$clickers)) {
 8401: 		$id=~s/^[\#0]+//;
 8402:                 $id=~s/[\-\:]//g;
 8403: 		if (exists($clicker_ids{$id})) {
 8404: 		    $clicker_ids{$id}.=','.$puname.':'.$pudom;
 8405: 		} else {
 8406: 		    $clicker_ids{$id}=$puname.':'.$pudom;
 8407: 		}
 8408:             }
 8409:         }
 8410:     }
 8411:     return %clicker_ids;
 8412: }
 8413: 
 8414: sub clicker_grading_parameters {
 8415:     return ('gradingmechanism' => 'scalar',
 8416:             'upfiletype' => 'scalar',
 8417:             'specificid' => 'scalar',
 8418:             'pcorrect' => 'scalar',
 8419:             'pincorrect' => 'scalar');
 8420: }
 8421: 
 8422: sub process_clicker {
 8423:     my ($r)=@_;
 8424:     my ($symb)=&get_symb($r);
 8425:     if (!$symb) {return '';}
 8426:     my $result=&checkforfile_js();
 8427:     $env{'form.probTitle'} = &Apache::lonnet::gettitle($symb);
 8428:     my ($table) = &showResourceInfo($symb,$env{'form.probTitle'});
 8429:     $result.=$table;
 8430:     $result.='<br /><table width="100%" border="0"><tr><td bgcolor="#777777">'."\n";
 8431:     $result.='<table width="100%" border="0"><tr bgcolor="#e6ffff"><td>'."\n";
 8432:     $result.='&nbsp;<b>'.&mt('Specify a file containing the clicker information for this resource.').
 8433:         '</b></td></tr>'."\n";
 8434:     $result.='<tr bgcolor=#ffffe6><td>'."\n";
 8435: # Attempt to restore parameters from last session, set defaults if not present
 8436:     my %Saveable_Parameters=&clicker_grading_parameters();
 8437:     &Apache::loncommon::restore_course_settings('grades_clicker',
 8438:                                                  \%Saveable_Parameters);
 8439:     if (!$env{'form.pcorrect'}) { $env{'form.pcorrect'}=100; }
 8440:     if (!$env{'form.pincorrect'}) { $env{'form.pincorrect'}=100; }
 8441:     if (!$env{'form.gradingmechanism'}) { $env{'form.gradingmechanism'}='attendance'; }
 8442:     if (!$env{'form.upfiletype'}) { $env{'form.upfiletype'}='iclicker'; }
 8443: 
 8444:     my %checked;
 8445:     foreach my $gradingmechanism ('attendance','personnel','specific','given') {
 8446:        if ($env{'form.gradingmechanism'} eq $gradingmechanism) {
 8447:           $checked{$gradingmechanism}="checked='checked'";
 8448:        }
 8449:     }
 8450: 
 8451:     my $upload=&mt("Upload File");
 8452:     my $type=&mt("Type");
 8453:     my $attendance=&mt("Award points just for participation");
 8454:     my $personnel=&mt("Correctness determined from response by course personnel");
 8455:     my $specific=&mt("Correctness determined from response with clicker ID(s)"); 
 8456:     my $given=&mt("Correctness determined from given list of answers").' '.
 8457:               '<font size="-2"><tt>('.&mt("Provide comma-separated list. Use '*' for any answer correct, '-' for skip").')</tt></font>';
 8458:     my $pcorrect=&mt("Percentage points for correct solution");
 8459:     my $pincorrect=&mt("Percentage points for incorrect solution");
 8460:     my $selectform=&Apache::loncommon::select_form($env{'form.upfiletype'},'upfiletype',
 8461: 						   ('iclicker' => 'i>clicker',
 8462:                                                     'interwrite' => 'interwrite PRS'));
 8463:     $symb = &Apache::lonenc::check_encrypt($symb);
 8464:     $result.=<<ENDUPFORM;
 8465: <script type="text/javascript">
 8466: function sanitycheck() {
 8467: // Accept only integer percentages
 8468:    document.forms.gradesupload.pcorrect.value=Math.round(document.forms.gradesupload.pcorrect.value);
 8469:    document.forms.gradesupload.pincorrect.value=Math.round(document.forms.gradesupload.pincorrect.value);
 8470: // Find out grading choice
 8471:    for (i=0; i<document.forms.gradesupload.gradingmechanism.length; i++) {
 8472:       if (document.forms.gradesupload.gradingmechanism[i].checked) {
 8473:          gradingchoice=document.forms.gradesupload.gradingmechanism[i].value;
 8474:       }
 8475:    }
 8476: // By default, new choice equals user selection
 8477:    newgradingchoice=gradingchoice;
 8478: // Not good to give more points for false answers than correct ones
 8479:    if (Math.round(document.forms.gradesupload.pcorrect.value)<Math.round(document.forms.gradesupload.pincorrect.value)) {
 8480:       document.forms.gradesupload.pcorrect.value=document.forms.gradesupload.pincorrect.value;
 8481:    }
 8482: // If new choice is attendance only, and old choice was correctness-based, restore defaults
 8483:    if ((gradingchoice=='attendance') && (document.forms.gradesupload.waschecked.value!='attendance')) {
 8484:       document.forms.gradesupload.pcorrect.value=100;
 8485:       document.forms.gradesupload.pincorrect.value=100;
 8486:    }
 8487: // If the values are different, cannot be attendance only
 8488:    if ((Math.round(document.forms.gradesupload.pcorrect.value)!=Math.round(document.forms.gradesupload.pincorrect.value)) &&
 8489:        (gradingchoice=='attendance')) {
 8490:        newgradingchoice='personnel';
 8491:    }
 8492: // Change grading choice to new one
 8493:    for (i=0; i<document.forms.gradesupload.gradingmechanism.length; i++) {
 8494:       if (document.forms.gradesupload.gradingmechanism[i].value==newgradingchoice) {
 8495:          document.forms.gradesupload.gradingmechanism[i].checked=true;
 8496:       } else {
 8497:          document.forms.gradesupload.gradingmechanism[i].checked=false;
 8498:       }
 8499:    }
 8500: // Remember the old state
 8501:    document.forms.gradesupload.waschecked.value=newgradingchoice;
 8502: }
 8503: </script>
 8504: <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
 8505: <input type="hidden" name="symb" value="$symb" />
 8506: <input type="hidden" name="command" value="processclickerfile" />
 8507: <input type="hidden" name="probTitle" value="$env{'form.probTitle'}" />
 8508: <input type="hidden" name="saveState"  value="$env{'form.saveState'}" />
 8509: <input type="file" name="upfile" size="50" />
 8510: <br /><label>$type: $selectform</label>
 8511: <br /><label><input type="radio" name="gradingmechanism" value="attendance" $checked{'attendance'} onClick="sanitycheck()" />$attendance </label>
 8512: <br /><label><input type="radio" name="gradingmechanism" value="personnel" $checked{'personnel'} onClick="sanitycheck()" />$personnel</label>
 8513: <br /><label><input type="radio" name="gradingmechanism" value="specific" $checked{'specific'} onClick="sanitycheck()" />$specific </label>
 8514: <input type="text" name="specificid" value="$env{'form.specificid'}" size="20" />
 8515: <br /><label><input type="radio" name="gradingmechanism" value="given" $checked{'given'} onClick="sanitycheck()" />$given </label>
 8516: <br />&nbsp;&nbsp;&nbsp;
 8517: <input type="text" name="givenanswer" size="50" />
 8518: <input type="hidden" name="waschecked" value="$env{'form.gradingmechanism'}" />
 8519: <br /><label>$pcorrect: <input type="text" name="pcorrect" size="4" value="$env{'form.pcorrect'}" onChange="sanitycheck()" /></label>
 8520: <br /><label>$pincorrect: <input type="text" name="pincorrect" size="4" value="$env{'form.pincorrect'}" onChange="sanitycheck()" /></label>
 8521: <br /><input type="button" onClick="javascript:checkUpload(this.form);" value="$upload" />
 8522: </form>
 8523: ENDUPFORM
 8524:     $result.='</td></tr></table>'."\n".
 8525:              '</td></tr></table><br /><br />'."\n";
 8526:     $result.=&show_grading_menu_form($symb);
 8527:     return $result;
 8528: }
 8529: 
 8530: sub process_clicker_file {
 8531:     my ($r)=@_;
 8532:     my ($symb)=&get_symb($r);
 8533:     if (!$symb) {return '';}
 8534: 
 8535:     my %Saveable_Parameters=&clicker_grading_parameters();
 8536:     &Apache::loncommon::store_course_settings('grades_clicker',
 8537:                                               \%Saveable_Parameters);
 8538: 
 8539:     my ($result) = &showResourceInfo($symb,$env{'form.probTitle'});
 8540:     if (($env{'form.gradingmechanism'} eq 'specific') && ($env{'form.specificid'}!~/\w/)) {
 8541: 	$result.='<span class="LC_error">'.&mt('You need to specify a clicker ID for the correct answer').'</span>';
 8542: 	return $result.&show_grading_menu_form($symb);
 8543:     }
 8544:     if (($env{'form.gradingmechanism'} eq 'given') && ($env{'form.givenanswer'}!~/\S/)) {
 8545:         $result.='<span class="LC_error">'.&mt('You need to specify the correct answer').'</span>';
 8546:         return $result.&show_grading_menu_form($symb);
 8547:     }
 8548:     my $foundgiven=0;
 8549:     if ($env{'form.gradingmechanism'} eq 'given') {
 8550:         $env{'form.givenanswer'}=~s/^\s*//gs;
 8551:         $env{'form.givenanswer'}=~s/\s*$//gs;
 8552:         $env{'form.givenanswer'}=~s/[^a-zA-Z0-9\.\*\-]+/\,/g;
 8553:         $env{'form.givenanswer'}=uc($env{'form.givenanswer'});
 8554:         my @answers=split(/\,/,$env{'form.givenanswer'});
 8555:         $foundgiven=$#answers+1;
 8556:     }
 8557:     my %clicker_ids=&gather_clicker_ids();
 8558:     my %correct_ids;
 8559:     if ($env{'form.gradingmechanism'} eq 'personnel') {
 8560: 	%correct_ids=&gather_adv_clicker_ids();
 8561:     }
 8562:     if ($env{'form.gradingmechanism'} eq 'specific') {
 8563: 	foreach my $correct_id (split(/[\s\,]/,$env{'form.specificid'})) {;
 8564: 	   $correct_id=~tr/a-z/A-Z/;
 8565: 	   $correct_id=~s/\s//gs;
 8566: 	   $correct_id=~s/^[\#0]+//;
 8567:            $correct_id=~s/[\-\:]//g;
 8568:            if ($correct_id) {
 8569: 	      $correct_ids{$correct_id}='specified';
 8570:            }
 8571:         }
 8572:     }
 8573:     if ($env{'form.gradingmechanism'} eq 'attendance') {
 8574: 	$result.=&mt('Score based on attendance only');
 8575:     } elsif ($env{'form.gradingmechanism'} eq 'given') {
 8576:         $result.=&mt('Score based on [_1] ([_2] answers)','<tt>'.$env{'form.givenanswer'}.'</tt>',$foundgiven);
 8577:     } else {
 8578: 	my $number=0;
 8579: 	$result.='<p><b>'.&mt('Correctness determined by the following IDs').'</b>';
 8580: 	foreach my $id (sort(keys(%correct_ids))) {
 8581: 	    $result.='<br /><tt>'.$id.'</tt> - ';
 8582: 	    if ($correct_ids{$id} eq 'specified') {
 8583: 		$result.=&mt('specified');
 8584: 	    } else {
 8585: 		my ($uname,$udom)=split(/\:/,$correct_ids{$id});
 8586: 		$result.=&Apache::loncommon::plainname($uname,$udom);
 8587: 	    }
 8588: 	    $number++;
 8589: 	}
 8590:         $result.="</p>\n";
 8591: 	if ($number==0) {
 8592: 	    $result.='<span class="LC_error">'.&mt('No IDs found to determine correct answer').'</span>';
 8593: 	    return $result.&show_grading_menu_form($symb);
 8594: 	}
 8595:     }
 8596:     if (length($env{'form.upfile'}) < 2) {
 8597:         $result.=&mt('[_1] Error: [_2] The file you attempted to upload, [_3] contained no information. Please check that you entered the correct filename.',
 8598: 		     '<span class="LC_error">',
 8599: 		     '</span>',
 8600: 		     '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>');
 8601:         return $result.&show_grading_menu_form($symb);
 8602:     }
 8603: 
 8604: # Were able to get all the info needed, now analyze the file
 8605: 
 8606:     $result.=&Apache::loncommon::studentbrowser_javascript();
 8607:     $symb = &Apache::lonenc::check_encrypt($symb);
 8608:     my $heading=&mt('Scanning clicker file');
 8609:     $result.=(<<ENDHEADER);
 8610: <br /><table width="100%" border="0"><tr><td bgcolor="#777777">
 8611: <table width="100%" border="0"><tr bgcolor="#e6ffff"><td>
 8612: <b>$heading</b></td></tr><tr bgcolor=#ffffe6><td>
 8613: <form method="post" action="/adm/grades" name="clickeranalysis">
 8614: <input type="hidden" name="symb" value="$symb" />
 8615: <input type="hidden" name="command" value="assignclickergrades" />
 8616: <input type="hidden" name="probTitle" value="$env{'form.probTitle'}" />
 8617: <input type="hidden" name="saveState"  value="$env{'form.saveState'}" />
 8618: <input type="hidden" name="gradingmechanism" value="$env{'form.gradingmechanism'}" />
 8619: <input type="hidden" name="pcorrect" value="$env{'form.pcorrect'}" />
 8620: <input type="hidden" name="pincorrect" value="$env{'form.pincorrect'}" />
 8621: ENDHEADER
 8622:     if ($env{'form.gradingmechanism'} eq 'given') {
 8623:        $result.='<input type="hidden" name="correct:given" value="'.$env{'form.givenanswer'}.'" />';
 8624:     } 
 8625:     my %responses;
 8626:     my @questiontitles;
 8627:     my $errormsg='';
 8628:     my $number=0;
 8629:     if ($env{'form.upfiletype'} eq 'iclicker') {
 8630: 	($errormsg,$number)=&iclicker_eval(\@questiontitles,\%responses);
 8631:     }
 8632:     if ($env{'form.upfiletype'} eq 'interwrite') {
 8633:         ($errormsg,$number)=&interwrite_eval(\@questiontitles,\%responses);
 8634:     }
 8635:     $result.='<br />'.&mt('Found [_1] question(s)',$number).'<br />'.
 8636:              '<input type="hidden" name="number" value="'.$number.'" />'.
 8637:              &mt('Awarding [_1] percent for correct and [_2] percent for incorrect responses',
 8638:                  $env{'form.pcorrect'},$env{'form.pincorrect'}).
 8639:              '<br />';
 8640:     if (($env{'form.gradingmechanism'} eq 'given') && ($number!=$foundgiven)) {
 8641:        $result.='<span class="LC_error">'.&mt('Number of given answers does not agree with number of questions in file.').'</span>';
 8642:        return $result.&show_grading_menu_form($symb);
 8643:     } 
 8644: # Remember Question Titles
 8645: # FIXME: Possibly need delimiter other than ":"
 8646:     for (my $i=0;$i<$number;$i++) {
 8647:         $result.='<input type="hidden" name="question:'.$i.'" value="'.
 8648:                  &HTML::Entities::encode($questiontitles[$i],'"&<>').'" />';
 8649:     }
 8650:     my $correct_count=0;
 8651:     my $student_count=0;
 8652:     my $unknown_count=0;
 8653: # Match answers with usernames
 8654: # FIXME: Possibly need delimiter other than ":"
 8655:     foreach my $id (keys(%responses)) {
 8656:        if ($correct_ids{$id}) {
 8657:           $result.="\n".'<input type="hidden" name="correct:'.$correct_count.':'.$correct_ids{$id}.'" value="'.$responses{$id}.'" />';
 8658:           $correct_count++;
 8659:        } elsif ($clicker_ids{$id}) {
 8660:           if ($clicker_ids{$id}=~/\,/) {
 8661: # More than one user with the same clicker!
 8662:              $result.="\n<hr />".&mt('Clicker registered more than once').": <tt>".$id."</tt><br />";
 8663:              $result.="\n".'<input type="hidden" name="unknown:'.$id.'" value="'.$responses{$id}.'" />'.
 8664:                            "<select name='multi".$id."'>";
 8665:              foreach my $reguser (sort(split(/\,/,$clicker_ids{$id}))) {
 8666:                  $result.="<option value='".$reguser."'>".&Apache::loncommon::plainname(split(/\:/,$reguser)).' ('.$reguser.')</option>';
 8667:              }
 8668:              $result.='</select>';
 8669:              $unknown_count++;
 8670:           } else {
 8671: # Good: found one and only one user with the right clicker
 8672:              $result.="\n".'<input type="hidden" name="student:'.$clicker_ids{$id}.'" value="'.$responses{$id}.'" />';
 8673:              $student_count++;
 8674:           }
 8675:        } else {
 8676:           $result.="\n<hr />".&mt('Unregistered Clicker')." <tt>".$id."</tt><br />";
 8677:           $result.="\n".'<input type="hidden" name="unknown:'.$id.'" value="'.$responses{$id}.'" />'.
 8678:                    "\n".&mt("Username").": <input type='text' name='uname".$id."' />&nbsp;".
 8679:                    "\n".&mt("Domain").": ".
 8680:                    &Apache::loncommon::select_dom_form($env{'course.'.$env{'request.course.id'}.'.domain'},'udom'.$id).'&nbsp;'.
 8681:                    &Apache::loncommon::selectstudent_link('clickeranalysis','uname'.$id,'udom'.$id);
 8682:           $unknown_count++;
 8683:        }
 8684:     }
 8685:     $result.='<hr />'.
 8686:              &mt('Found [_1] registered and [_2] unregistered clickers.',$student_count,$unknown_count);
 8687:     if (($env{'form.gradingmechanism'} ne 'attendance') && ($env{'form.gradingmechanism'} ne 'given')) {
 8688:        if ($correct_count==0) {
 8689:           $errormsg.="Found no correct answers answers for grading!";
 8690:        } elsif ($correct_count>1) {
 8691:           $result.='<br /><span class="LC_warning">'.&mt("Found [_1] entries for grading!",$correct_count).'</span>';
 8692:        }
 8693:     }
 8694:     if ($number<1) {
 8695:        $errormsg.="Found no questions.";
 8696:     }
 8697:     if ($errormsg) {
 8698:        $result.='<br /><span class="LC_error">'.&mt($errormsg).'</span>';
 8699:     } else {
 8700:        $result.='<br /><input type="submit" name="finalize" value="'.&mt('Finalize Grading').'" />';
 8701:     }
 8702:     $result.='</form></td></tr></table>'."\n".
 8703:              '</td></tr></table><br /><br />'."\n";
 8704:     return $result.&show_grading_menu_form($symb);
 8705: }
 8706: 
 8707: sub iclicker_eval {
 8708:     my ($questiontitles,$responses)=@_;
 8709:     my $number=0;
 8710:     my $errormsg='';
 8711:     foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
 8712:         my %components=&Apache::loncommon::record_sep($line);
 8713:         my @entries=map {$components{$_}} (sort(keys(%components)));
 8714: 	if ($entries[0] eq 'Question') {
 8715: 	    for (my $i=3;$i<$#entries;$i+=6) {
 8716: 		$$questiontitles[$number]=$entries[$i];
 8717: 		$number++;
 8718: 	    }
 8719: 	}
 8720: 	if ($entries[0]=~/^\#/) {
 8721: 	    my $id=$entries[0];
 8722: 	    my @idresponses;
 8723: 	    $id=~s/^[\#0]+//;
 8724: 	    for (my $i=0;$i<$number;$i++) {
 8725: 		my $idx=3+$i*6;
 8726: 		push(@idresponses,$entries[$idx]);
 8727: 	    }
 8728: 	    $$responses{$id}=join(',',@idresponses);
 8729: 	}
 8730:     }
 8731:     return ($errormsg,$number);
 8732: }
 8733: 
 8734: sub interwrite_eval {
 8735:     my ($questiontitles,$responses)=@_;
 8736:     my $number=0;
 8737:     my $errormsg='';
 8738:     my $skipline=1;
 8739:     my $questionnumber=0;
 8740:     my %idresponses=();
 8741:     foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
 8742:         my %components=&Apache::loncommon::record_sep($line);
 8743:         my @entries=map {$components{$_}} (sort(keys(%components)));
 8744:         if ($entries[1] eq 'Time') { $skipline=0; next; }
 8745:         if ($entries[1] eq 'Response') { $skipline=1; }
 8746:         next if $skipline;
 8747:         if ($entries[0]!=$questionnumber) {
 8748:            $questionnumber=$entries[0];
 8749:            $$questiontitles[$number]=&mt('Question [_1]',$questionnumber);
 8750:            $number++;
 8751:         }
 8752:         my $id=$entries[4];
 8753:         $id=~s/^[\#0]+//;
 8754:         $id=~s/^v\d*\://i;
 8755:         $id=~s/[\-\:]//g;
 8756:         $idresponses{$id}[$number]=$entries[6];
 8757:     }
 8758:     foreach my $id (keys(%idresponses)) {
 8759:        $$responses{$id}=join(',',@{$idresponses{$id}});
 8760:        $$responses{$id}=~s/^\s*\,//;
 8761:     }
 8762:     return ($errormsg,$number);
 8763: }
 8764: 
 8765: sub assign_clicker_grades {
 8766:     my ($r)=@_;
 8767:     my ($symb)=&get_symb($r);
 8768:     if (!$symb) {return '';}
 8769: # See which part we are saving to
 8770:     my ($partlist,$handgrade,$responseType) = &response_type($symb);
 8771: # FIXME: This should probably look for the first handgradeable part
 8772:     my $part=$$partlist[0];
 8773: # Start screen output
 8774:     my ($result) = &showResourceInfo($symb,$env{'form.probTitle'});
 8775: 
 8776:     my $heading=&mt('Assigning grades based on clicker file');
 8777:     $result.=(<<ENDHEADER);
 8778: <br /><table width="100%" border="0"><tr><td bgcolor="#777777">
 8779: <table width="100%" border="0"><tr bgcolor="#e6ffff"><td>
 8780: <b>$heading</b></td></tr><tr bgcolor=#ffffe6><td>
 8781: ENDHEADER
 8782: # Get correct result
 8783: # FIXME: Possibly need delimiter other than ":"
 8784:     my @correct=();
 8785:     my $gradingmechanism=$env{'form.gradingmechanism'};
 8786:     my $number=$env{'form.number'};
 8787:     if ($gradingmechanism ne 'attendance') {
 8788:        foreach my $key (keys(%env)) {
 8789:           if ($key=~/^form\.correct\:/) {
 8790:              my @input=split(/\,/,$env{$key});
 8791:              for (my $i=0;$i<=$#input;$i++) {
 8792:                  if (($correct[$i]) && ($input[$i]) &&
 8793:                      ($correct[$i] ne $input[$i])) {
 8794:                     $result.='<br /><span class="LC_warning">'.
 8795:                              &mt('More than one correct result given for question "[_1]": [_2] versus [_3].',
 8796:                                  $env{'form.question:'.$i},$correct[$i],$input[$i]).'</span>';
 8797:                  } elsif ($input[$i]) {
 8798:                     $correct[$i]=$input[$i];
 8799:                  }
 8800:              }
 8801:           }
 8802:        }
 8803:        for (my $i=0;$i<$number;$i++) {
 8804:           if (!$correct[$i]) {
 8805:              $result.='<br /><span class="LC_error">'.
 8806:                       &mt('No correct result given for question "[_1]"!',
 8807:                           $env{'form.question:'.$i}).'</span>';
 8808:           }
 8809:        }
 8810:        $result.='<br />'.&mt("Correct answer: [_1]",join(', ',map { ($_?$_:'-') } @correct));
 8811:     }
 8812: # Start grading
 8813:     my $pcorrect=$env{'form.pcorrect'};
 8814:     my $pincorrect=$env{'form.pincorrect'};
 8815:     my $storecount=0;
 8816:     foreach my $key (keys(%env)) {
 8817:        my $user='';
 8818:        if ($key=~/^form\.student\:(.*)$/) {
 8819:           $user=$1;
 8820:        }
 8821:        if ($key=~/^form\.unknown\:(.*)$/) {
 8822:           my $id=$1;
 8823:           if (($env{'form.uname'.$id}) && ($env{'form.udom'.$id})) {
 8824:              $user=$env{'form.uname'.$id}.':'.$env{'form.udom'.$id};
 8825:           } elsif ($env{'form.multi'.$id}) {
 8826:              $user=$env{'form.multi'.$id};
 8827:           }
 8828:        }
 8829:        if ($user) { 
 8830:           my @answer=split(/\,/,$env{$key});
 8831:           my $sum=0;
 8832:           my $realnumber=$number;
 8833:           for (my $i=0;$i<$number;$i++) {
 8834:              if ($answer[$i]) {
 8835:                 if ($gradingmechanism eq 'attendance') {
 8836:                    $sum+=$pcorrect;
 8837:                 } elsif ($answer[$i] eq '*') {
 8838:                    $sum+=$pcorrect;
 8839:                 } elsif ($answer[$i] eq '-') {
 8840:                    $realnumber--;
 8841:                 } else {
 8842:                    if ($answer[$i] eq $correct[$i]) {
 8843:                       $sum+=$pcorrect;
 8844:                    } else {
 8845:                       $sum+=$pincorrect;
 8846:                    }
 8847:                 }
 8848:              }
 8849:           }
 8850:           my $ave=$sum/(100*$realnumber);
 8851: # Store
 8852:           my ($username,$domain)=split(/\:/,$user);
 8853:           my %grades=();
 8854:           $grades{"resource.$part.solved"}='correct_by_override';
 8855:           $grades{"resource.$part.awarded"}=$ave;
 8856:           $grades{"resource.regrader"}="$env{'user.name'}:$env{'user.domain'}";
 8857:           my $returncode=&Apache::lonnet::cstore(\%grades,$symb,
 8858:                                                  $env{'request.course.id'},
 8859:                                                  $domain,$username);
 8860:           if ($returncode ne 'ok') {
 8861:              $result.="<br /><span class=\"LC_error\">Failed to save student $username:$domain. Message when trying to save was ($returncode)</span>";
 8862:           } else {
 8863:              $storecount++;
 8864:           }
 8865:        }
 8866:     }
 8867: # We are done
 8868:     $result.='<br />'.&mt('Successfully stored grades for [quant,_1,student].',$storecount).
 8869:              '</td></tr></table>'."\n".
 8870:              '</td></tr></table><br /><br />'."\n";
 8871:     return $result.&show_grading_menu_form($symb);
 8872: }
 8873: 
 8874: sub handler {
 8875:     my $request=$_[0];
 8876:     &reset_caches();
 8877:     if ($env{'browser.mathml'}) {
 8878: 	&Apache::loncommon::content_type($request,'text/xml');
 8879:     } else {
 8880: 	&Apache::loncommon::content_type($request,'text/html');
 8881:     }
 8882:     $request->send_http_header;
 8883:     return '' if $request->header_only;
 8884:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
 8885:     my $symb=&get_symb($request,1);
 8886:     my @commands=&Apache::loncommon::get_env_multiple('form.command');
 8887:     my $command=$commands[0];
 8888: 
 8889:     if ($#commands > 0) {
 8890: 	&Apache::lonnet::logthis("grades got multiple commands ".join(':',@commands));
 8891:     }
 8892: 
 8893:     $ssi_error = 0;
 8894:     my $brcrum = [{href=>"/adm/grades",text=>"Grading"}];
 8895:     $request->print(&Apache::loncommon::start_page('Grading',undef,
 8896:                                           {'bread_crumbs' => $brcrum}));
 8897:     if ($symb eq '' && $command eq '') {
 8898: 	if ($env{'user.adv'}) {
 8899: 	    if (($env{'form.codeone'}) && ($env{'form.codetwo'}) &&
 8900: 		($env{'form.codethree'})) {
 8901: 		my $token=$env{'form.codeone'}.'*'.$env{'form.codetwo'}.'*'.
 8902: 		    $env{'form.codethree'};
 8903: 		my ($tsymb,$tuname,$tudom,$tcrsid)=
 8904: 		    &Apache::lonnet::checkin($token);
 8905: 		if ($tsymb) {
 8906: 		    my ($map,$id,$url)=&Apache::lonnet::decode_symb($tsymb);
 8907: 		    if (&Apache::lonnet::allowed('mgr',$tcrsid)) {
 8908: 			$request->print(&ssi_with_retries('/res/'.$url, $ssi_retries,
 8909: 					  ('grade_username' => $tuname,
 8910: 					   'grade_domain' => $tudom,
 8911: 					   'grade_courseid' => $tcrsid,
 8912: 					   'grade_symb' => $tsymb)));
 8913: 		    } else {
 8914: 			$request->print('<h3>Not authorized: '.$token.'</h3>');
 8915: 		    }
 8916: 		} else {
 8917: 		    $request->print('<h3>Not a valid DocID: '.$token.'</h3>');
 8918: 		}
 8919: 	    } else {
 8920: 		$request->print(&Apache::lonxml::tokeninputfield());
 8921: 	    }
 8922: 	}
 8923:     } else {
 8924: 	&init_perm();
 8925: 	if ($command eq 'submission' && $perm{'vgr'}) {
 8926: 	    ($env{'form.student'} eq '' ? &listStudents($request) : &submission($request,0,0));
 8927: 	} elsif ($command eq 'pickStudentPage' && $perm{'vgr'}) {
 8928: 	    &pickStudentPage($request);
 8929: 	} elsif ($command eq 'displayPage' && $perm{'vgr'}) {
 8930: 	    &displayPage($request);
 8931: 	} elsif ($command eq 'gradeByPage' && $perm{'mgr'}) {
 8932: 	    &updateGradeByPage($request);
 8933: 	} elsif ($command eq 'processGroup' && $perm{'vgr'}) {
 8934: 	    &processGroup($request);
 8935: 	} elsif ($command eq 'gradingmenu' && $perm{'vgr'}) {
 8936: 	    $request->print(&grading_menu($request));
 8937: 	} elsif ($command eq 'submit_options' && $perm{'vgr'}) {
 8938: 	    $request->print(&submit_options($request));
 8939: 	} elsif ($command eq 'viewgrades' && $perm{'vgr'}) {
 8940: 	    $request->print(&viewgrades($request));
 8941: 	} elsif ($command eq 'handgrade' && $perm{'mgr'}) {
 8942: 	    $request->print(&processHandGrade($request));
 8943: 	} elsif ($command eq 'editgrades' && $perm{'mgr'}) {
 8944: 	    $request->print(&editgrades($request));
 8945: 	} elsif ($command eq 'verify' && $perm{'vgr'}) {
 8946: 	    $request->print(&verifyreceipt($request));
 8947:         } elsif ($command eq 'processclicker' && $perm{'mgr'}) {
 8948:             $request->print(&process_clicker($request));
 8949:         } elsif ($command eq 'processclickerfile' && $perm{'mgr'}) {
 8950:             $request->print(&process_clicker_file($request));
 8951:         } elsif ($command eq 'assignclickergrades' && $perm{'mgr'}) {
 8952:             $request->print(&assign_clicker_grades($request));
 8953: 	} elsif ($command eq 'csvform' && $perm{'mgr'}) {
 8954: 	    $request->print(&upcsvScores_form($request));
 8955: 	} elsif ($command eq 'csvupload' && $perm{'mgr'}) {
 8956: 	    $request->print(&csvupload($request));
 8957: 	} elsif ($command eq 'csvuploadmap' && $perm{'mgr'} ) {
 8958: 	    $request->print(&csvuploadmap($request));
 8959: 	} elsif ($command eq 'csvuploadoptions' && $perm{'mgr'}) {
 8960: 	    if ($env{'form.associate'} ne 'Reverse Association') {
 8961: 		$request->print(&csvuploadoptions($request));
 8962: 	    } else {
 8963: 		if ( $env{'form.upfile_associate'} ne 'reverse' ) {
 8964: 		    $env{'form.upfile_associate'} = 'reverse';
 8965: 		} else {
 8966: 		    $env{'form.upfile_associate'} = 'forward';
 8967: 		}
 8968: 		$request->print(&csvuploadmap($request));
 8969: 	    }
 8970: 	} elsif ($command eq 'csvuploadassign' && $perm{'mgr'} ) {
 8971: 	    $request->print(&csvuploadassign($request));
 8972: 	} elsif ($command eq 'scantron_selectphase' && $perm{'mgr'}) {
 8973: 	    $request->print(&scantron_selectphase($request));
 8974:  	} elsif ($command eq 'scantron_warning' && $perm{'mgr'}) {
 8975:  	    $request->print(&scantron_do_warning($request));
 8976: 	} elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
 8977: 	    $request->print(&scantron_validate_file($request));
 8978: 	} elsif ($command eq 'scantron_process' && $perm{'mgr'}) {
 8979: 	    $request->print(&scantron_process_students($request));
 8980:  	} elsif ($command eq 'scantronupload' && 
 8981:  		 (&Apache::lonnet::allowed('usc',$env{'request.role.domain'})||
 8982: 		  &Apache::lonnet::allowed('usc',$env{'request.course.id'}))) {
 8983:  	    $request->print(&scantron_upload_scantron_data($request)); 
 8984:  	} elsif ($command eq 'scantronupload_save' &&
 8985:  		 (&Apache::lonnet::allowed('usc',$env{'request.role.domain'})||
 8986: 		  &Apache::lonnet::allowed('usc',$env{'request.course.id'}))) {
 8987:  	    $request->print(&scantron_upload_scantron_data_save($request));
 8988:  	} elsif ($command eq 'scantron_download' &&
 8989: 		 &Apache::lonnet::allowed('usc',$env{'request.course.id'})) {
 8990:  	    $request->print(&scantron_download_scantron_data($request));
 8991:         } elsif ($command eq 'checksubmissions' && $perm{'vgr'}) {
 8992:             $request->print(&checkscantron_results($request));     
 8993: 	} elsif ($command) {
 8994: 	    $request->print("Access Denied ($command)");
 8995: 	}
 8996:     }
 8997:     if ($ssi_error) {
 8998: 	&ssi_print_error($request);
 8999:     }
 9000:     $request->print(&Apache::loncommon::end_page());
 9001:     &reset_caches();
 9002:     return '';
 9003: }
 9004: 
 9005: 1;
 9006: 
 9007: __END__;
 9008: 
 9009: 
 9010: =head1 NAME
 9011: 
 9012: Apache::grades
 9013: 
 9014: =head1 SYNOPSIS
 9015: 
 9016: Handles the viewing of grades.
 9017: 
 9018: This is part of the LearningOnline Network with CAPA project
 9019: described at http://www.lon-capa.org.
 9020: 
 9021: =head1 OVERVIEW
 9022: 
 9023: Do an ssi with retries:
 9024: While I'd love to factor out this with the vesrion in lonprintout,
 9025: 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
 9026: I'm not quite ready to invent (e.g. an ssi_with_retry object).
 9027: 
 9028: At least the logic that drives this has been pulled out into loncommon.
 9029: 
 9030: 
 9031: 
 9032: ssi_with_retries - Does the server side include of a resource.
 9033:                      if the ssi call returns an error we'll retry it up to
 9034:                      the number of times requested by the caller.
 9035:                      If we still have a proble, no text is appended to the
 9036:                      output and we set some global variables.
 9037:                      to indicate to the caller an SSI error occurred.  
 9038:                      All of this is supposed to deal with the issues described
 9039:                      in LonCAPA BZ 5631 see:
 9040:                      http://bugs.lon-capa.org/show_bug.cgi?id=5631
 9041:                      by informing the user that this happened.
 9042: 
 9043: Parameters:
 9044:   resource   - The resource to include.  This is passed directly, without
 9045:                interpretation to lonnet::ssi.
 9046:   form       - The form hash parameters that guide the interpretation of the resource
 9047:                
 9048:   retries    - Number of retries allowed before giving up completely.
 9049: Returns:
 9050:   On success, returns the rendered resource identified by the resource parameter.
 9051: Side Effects:
 9052:   The following global variables can be set:
 9053:    ssi_error                - If an unrecoverable error occurred this becomes true.
 9054:                               It is up to the caller to initialize this to false
 9055:                               if desired.
 9056:    ssi_error_resource  - If an unrecoverable error occurred, this is the value
 9057:                               of the resource that could not be rendered by the ssi
 9058:                               call.
 9059:    ssi_error_message   - The error string fetched from the ssi response
 9060:                               in the event of an error.
 9061: 
 9062: 
 9063: =head1 HANDLER SUBROUTINE
 9064: 
 9065: ssi_with_retries()
 9066: 
 9067: =head1 SUBROUTINES
 9068: 
 9069: =over
 9070: 
 9071: =item scantron_get_correction() : 
 9072: 
 9073:    Builds the interface screen to interact with the operator to fix a
 9074:    specific error condition in a specific scanline
 9075: 
 9076:  Arguments:
 9077:     $r           - Apache request object
 9078:     $i           - number of the current scanline
 9079:     $scan_record - hash ref as returned from &scantron_parse_scanline()
 9080:     $scan_config - hash ref as returned from &get_scantron_config()
 9081:     $line        - full contents of the current scanline
 9082:     $error       - error condition, valid values are
 9083:                    'incorrectCODE', 'duplicateCODE',
 9084:                    'doublebubble', 'missingbubble',
 9085:                    'duplicateID', 'incorrectID'
 9086:     $arg         - extra information needed
 9087:        For errors:
 9088:          - duplicateID   - paper number that this studentID was seen before on
 9089:          - duplicateCODE - array ref of the paper numbers this CODE was
 9090:                            seen on before
 9091:          - incorrectCODE - current incorrect CODE 
 9092:          - doublebubble  - array ref of the bubble lines that have double
 9093:                            bubble errors
 9094:          - missingbubble - array ref of the bubble lines that have missing
 9095:                            bubble errors
 9096: 
 9097: =item  scantron_get_maxbubble() : 
 9098: 
 9099:    Returns the maximum number of bubble lines that are expected to
 9100:    occur. Does this by walking the selected sequence rendering the
 9101:    resource and then checking &Apache::lonxml::get_problem_counter()
 9102:    for what the current value of the problem counter is.
 9103: 
 9104:    Caches the results to $env{'form.scantron_maxbubble'},
 9105:    $env{'form.scantron.bubble_lines.n'}, 
 9106:    $env{'form.scantron.first_bubble_line.n'} and
 9107:    $env{"form.scantron.sub_bubblelines.n"}
 9108:    which are the total number of bubble, lines, the number of bubble
 9109:    lines for response n and number of the first bubble line for response n,
 9110:    and a comma separated list of numbers of bubble lines for sub-questions
 9111:    (for optionresponse, matchresponse, and rankresponse items), for response n.  
 9112: 
 9113: 
 9114: =item  scantron_validate_missingbubbles() : 
 9115: 
 9116:    Validates all scanlines in the selected file to not have any
 9117:     answers that don't have bubbles that have not been verified
 9118:     to be bubble free.
 9119: 
 9120: =item  scantron_process_students() : 
 9121: 
 9122:    Routine that does the actual grading of the bubble sheet information.
 9123: 
 9124:    The parsed scanline hash is added to %env 
 9125: 
 9126:    Then foreach unskipped scanline it does an &Apache::lonnet::ssi()
 9127:    foreach resource , with the form data of
 9128: 
 9129: 	'submitted'     =>'scantron' 
 9130: 	'grade_target'  =>'grade',
 9131: 	'grade_username'=> username of student
 9132: 	'grade_domain'  => domain of student
 9133: 	'grade_courseid'=> of course
 9134: 	'grade_symb'    => symb of resource to grade
 9135: 
 9136:     This triggers a grading pass. The problem grading code takes care
 9137:     of converting the bubbled letter information (now in %env) into a
 9138:     valid submission.
 9139: 
 9140: =item  scantron_upload_scantron_data() :
 9141: 
 9142:     Creates the screen for adding a new bubble sheet data file to a course.
 9143: 
 9144: =item  scantron_upload_scantron_data_save() : 
 9145: 
 9146:    Adds a provided bubble information data file to the course if user
 9147:    has the correct privileges to do so. 
 9148: 
 9149: =item  valid_file() :
 9150: 
 9151:    Validates that the requested bubble data file exists in the course.
 9152: 
 9153: =item  scantron_download_scantron_data() : 
 9154: 
 9155:    Shows a list of the three internal files (original, corrected,
 9156:    skipped) for a specific bubble sheet data file that exists in the
 9157:    course.
 9158: 
 9159: =item  scantron_validate_ID() : 
 9160: 
 9161:    Validates all scanlines in the selected file to not have any
 9162:    invalid or underspecified student IDs
 9163: 
 9164: =back
 9165: 
 9166: =cut

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