File:  [LON-CAPA] / loncom / homework / inputtags.pm
Revision 1.205: download - view: text, annotated - select for diffs
Thu Sep 21 21:23:19 2006 UTC (17 years, 8 months ago) by albertel
Branches: MAIN
CVS tags: HEAD
- BUG$4486b - always show submissions to essay problems

    1: # The LearningOnline Network with CAPA
    2: # input  definitons
    3: #
    4: # $Id: inputtags.pm,v 1.205 2006/09/21 21:23:19 albertel 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: package Apache::inputtags;
   29: use HTML::Entities();
   30: use strict;
   31: use Apache::loncommon;
   32: use Apache::lonlocal;
   33: use Apache::lonnet;
   34: use lib '/home/httpd/lib/perl/';
   35: use LONCAPA;
   36:  
   37: 
   38: BEGIN {
   39:     &Apache::lonxml::register('Apache::inputtags',('hiddenline','textfield','textline'));
   40: }
   41: 
   42: #   Initializes a set of global variables used during the parse of the problem.
   43: #
   44: #  @Apache::inputtags::input        - List of current input ids.
   45: #  @Apache::inputtags::inputlist    - List of all input ids seen this problem.
   46: #  @Apache::inputtags::response     - List of all current resopnse ids.
   47: #  @Apache::inputtags::responselist - List of all response ids seen this 
   48: #                                       problem.
   49: #  @Apache::inputtags::hint         - List of all hint ids.
   50: #  @Apache::inputtags::hintlist     - List of all hint ids seen this problem.
   51: #  @Apache::inputtags::previous     - List describing if specific responseds
   52: #                                       have been used
   53: #  @Apache::inputtags::previous_version - Submission responses were used in.
   54: #  $Apache::inputtags::part         - Current part id (valid only in 
   55: #                                       <problem>)
   56: #                                     0 if not in a part.
   57: #  @Apache::inputtags::partlist     - List of part ids seen in the current
   58: #                                       <problem>
   59: #  @Apache::inputtags::status       - List of problem  statuses. First 
   60: #                                     element is the status of the <problem>
   61: #                                     the remainder are for individual <part>s.
   62: #  %Apache::inputtags::params       - Hash of defined parameters for the
   63: #                                     current response.
   64: #  @Apache::inputtags::import       - List of all ids for <import> thes get
   65: #                                     join()ed and prepended.
   66: #  @Apache::inputtags::importlist   - List of all import ids seen.
   67: #  $Apache::inputtags::response_with_no_part
   68: #                                   - Flag set true if we have seen a response
   69: #                                     that is not inside a <part>
   70: #  %Apache::inputtags::answertxt    - <*response> tags store correct
   71: #                                     answer strings for display by <textline/>
   72: #                                     in this hash.
   73: 
   74: sub initialize_inputtags {
   75:     @Apache::inputtags::input=();
   76:     @Apache::inputtags::inputlist=();
   77:     @Apache::inputtags::response=();
   78:     @Apache::inputtags::responselist=();
   79:     @Apache::inputtags::hint=();
   80:     @Apache::inputtags::hintlist=();
   81:     @Apache::inputtags::previous=();
   82:     @Apache::inputtags::previous_version=();
   83:     $Apache::inputtags::part='';
   84:     @Apache::inputtags::partlist=();
   85:     @Apache::inputtags::status=();
   86:     %Apache::inputtags::params=();
   87:     @Apache::inputtags::import=();
   88:     @Apache::inputtags::importlist=();
   89:     $Apache::inputtags::response_with_no_part=0;
   90:     %Apache::inputtags::answertxt=();
   91: }
   92: 
   93: sub check_for_duplicate_ids {
   94:     my %check;
   95:     foreach my $id (@Apache::inputtags::partlist,
   96: 		    @Apache::inputtags::responselist,
   97: 		    @Apache::inputtags::hintlist,
   98: 		    @Apache::inputtags::importlist) {
   99: 	$check{$id}++;
  100:     }
  101:     my @duplicates;
  102:     foreach my $id (sort(keys(%check))) {
  103: 	if ($check{$id} > 1) {
  104: 	    push(@duplicates,$id);
  105: 	}
  106:     }
  107:     if (@duplicates) {
  108: 	&Apache::lonxml::error("Duplicated ids found, problem will operate incorrectly. Duplicated ids seen: ",join(', ',@duplicates));
  109:     }
  110: }
  111: 
  112: sub start_input {
  113:     my ($parstack,$safeeval)=@_;
  114:     my $id = &Apache::lonxml::get_param('id',$parstack,$safeeval);
  115:     if ($id eq '') { $id = $Apache::lonxml::curdepth; }
  116:     push (@Apache::inputtags::input,$id);
  117:     push (@Apache::inputtags::inputlist,$id);
  118:     return $id;
  119: }
  120: 
  121: sub end_input {
  122:     pop @Apache::inputtags::input;
  123:     return '';
  124: }
  125: 
  126: sub addchars {
  127:     my ($fieldid,$addchars)=@_;
  128:     my $output='';
  129:     foreach (split(/\,/,$addchars)) {
  130: 	$output.='<a href="javascript:void(document.forms.lonhomework.'.
  131: 	    $fieldid.'.value+=\''.$_.'\')">'.$_.'</a> ';
  132:     }
  133:     return $output;
  134: }
  135: 
  136: sub start_textfield {
  137:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  138:     my $result = "";
  139:     my $id = &start_input($parstack,$safeeval);
  140:     my $resid=$Apache::inputtags::response[-1];
  141:     if ($target eq 'web') {
  142: 	$Apache::lonxml::evaluate--;
  143: 	my $partid=$Apache::inputtags::part;
  144: 	my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$resid.submission"},'<>&"');
  145: 	if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
  146: 	    my $cols = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
  147: 	    if ( $cols eq '') { $cols = 80; }
  148: 	    my $rows = &Apache::lonxml::get_param('rows',$parstack,$safeeval);
  149: 	    if ( $rows eq '') { $rows = 16; }
  150: 	    my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
  151: 	    $result='';
  152: 	    if ($addchars) {
  153: 		$result.=&addchars('HWVAL_'.$resid,$addchars);
  154: 	    }
  155: 	    &Apache::lonhtmlcommon::add_htmlareafields('HWVAL_'.$resid);
  156: 	    $result.= '<textarea wrap="hard" name="HWVAL_'.$resid.'" id="HWVAL_'.$resid.'" '.
  157: 		"rows=\"$rows\" cols=\"$cols\">".$oldresponse;
  158: 	    if ($oldresponse ne '') {
  159: 
  160: 		#get rid of any startup text if the user has already responded
  161: 		&Apache::lonxml::get_all_text("/textfield",$parser,$style);
  162: 	    }
  163: 	} else {
  164: 	    #show past answer in the essayresponse case
  165: 	    if ($oldresponse =~ /\S/
  166: 		&& &Apache::londefdef::is_inside_of($tagstack,
  167: 						    'essayresponse') ) {
  168: 		$result='<table class="LC_pastsubmission"><tr><td>'.
  169: 		    $oldresponse.'</td></tr></table>';
  170: 	    }
  171: 	    #get rid of any startup text
  172: 	    &Apache::lonxml::get_all_text("/textfield",$parser,$style);
  173: 	}
  174:     } elsif ($target eq 'grade') {
  175: 	my $seedtext=&Apache::lonxml::get_all_text("/textfield",$parser,
  176: 						   $style);
  177: 	if ($seedtext eq $env{'form.HWVAL_'.$resid}) {
  178: 	    # if the seed text is still there it wasn't a real submission
  179: 	    $env{'form.HWVAL_'.$resid}='';
  180: 	}
  181:     } elsif ($target eq 'edit') {
  182: 	$result.=&Apache::edit::tag_start($target,$token);
  183: 	$result.=&Apache::edit::text_arg('Rows:','rows',$token,4);
  184: 	$result.=&Apache::edit::text_arg('Columns:','cols',$token,4);
  185: 	$result.=&Apache::edit::text_arg
  186: 	    ('Click-On Texts (comma sep):','addchars',$token,10);
  187: 	my $bodytext=&Apache::lonxml::get_all_text("/textfield",$parser,
  188: 						   $style);
  189: 	$result.=&Apache::edit::editfield($token->[1],$bodytext,'Text you want to appear by default:',80,2);
  190:     } elsif ($target eq 'modified') {
  191: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  192: 						     $safeeval,'rows','cols',
  193: 						     'addchars');
  194: 	if ($constructtag) {
  195: 	    $result = &Apache::edit::rebuild_tag($token);
  196: 	} else {
  197: 	    $result=$token->[4];
  198: 	}
  199: 	$result.=&Apache::edit::modifiedfield("/textfield",$parser);
  200:     } elsif ($target eq 'tex') {
  201: 	my $number_of_lines = &Apache::lonxml::get_param('rows',$parstack,$safeeval);
  202: 	my $width_of_box = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
  203: 	if ($$tagstack[-2] eq 'essayresponse' and $Apache::lonhomework::type eq 'exam') {
  204: 	    $result = '\fbox{\fbox{\parbox{\textwidth-5mm}{';
  205: 	    for (my $i=0;$i<int $number_of_lines*2;$i++) {$result.='\strut \\\\ ';}
  206: 	    $result.='\strut \\\\\strut \\\\\strut \\\\\strut \\\\}}}';
  207: 	} else {
  208: 	    my $TeXwidth=$width_of_box/80;
  209: 	    $result = '\vskip 1 mm \fbox{\fbox{\parbox{'.$TeXwidth.'\textwidth-5mm}{';
  210: 	    for (my $i=0;$i<int $number_of_lines*2;$i++) {$result.='\strut \\\\ ';}
  211: 	    $result.='}}}\vskip 2 mm ';
  212: 	}
  213:     }
  214:     return $result;
  215: }
  216: 
  217: sub end_textfield {
  218:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  219:     my $result;
  220:     if ($target eq 'web') {
  221: 	$Apache::lonxml::evaluate++;
  222: 	if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
  223: 	    return "</textarea>";
  224: 	}
  225:     } elsif ($target eq 'edit') {
  226: 	$result=&Apache::edit::end_table();
  227:     }
  228:     &end_input;
  229:     return $result;
  230: }
  231: 
  232: sub exam_score_line {
  233:     my ($target) = @_;
  234: 
  235:     my $result;
  236:     if ($target eq 'tex') {
  237: 	my $repetition = &Apache::response::repetition();
  238: 	$result.='\begin{enumerate}';
  239: 	if ($env{'request.state'} eq "construct" ) {$result.='\item[\strut]';}
  240: 	foreach my $i (0..$repetition-1) {
  241: 	    $result.='\item[\textbf{'.
  242: 		($Apache::lonxml::counter+$i).
  243: 		'}.]\textit{Leave blank on scoring form}\vskip 0 mm';
  244: 	}
  245: 	$result.= '\end{enumerate}';
  246:     }
  247: 
  248:     return $result;
  249: }
  250: 
  251: sub exam_box {
  252:     my ($target) = @_;
  253:     my $result;
  254: 
  255:     if ($target eq 'tex') {
  256: 	$result .= '\fbox{\fbox{\parbox{\textwidth-5mm}{\strut\\\\\strut\\\\\strut\\\\\strut\\\\}}}';
  257: 	$result .= &exam_score_line($target);
  258:     } elsif ($target eq 'web') {
  259: 	my $id=$Apache::inputtags::response[-1];
  260: 	$result.= '<br /><br />
  261:                    <textarea name="HWVAL_'.$id.'" rows="4" cols="50">
  262:                    </textarea> <br /><br />';
  263:     }
  264:     return $result;
  265: }
  266: 
  267: sub needs_exam_box {
  268:     my ($tagstack) = @_;
  269:     my @tags = ('formularesponse',
  270: 		'stringresponse',
  271: 		'reactionresponse',
  272: 		'organicresponse',
  273: 		);
  274: 
  275:     foreach my $tag (@tags) {
  276: 	if (grep(/\Q$tag\E/,@$tagstack)) {
  277: 	    return 1;
  278: 	}
  279:     }
  280:     return 0;
  281: }
  282: 
  283: sub start_textline {
  284:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  285:     my $result = "";
  286:     if ($target eq 'web') {
  287: 	$Apache::lonxml::evaluate--;
  288: 	my $partid=$Apache::inputtags::part;
  289: 	my $id=$Apache::inputtags::response[-1];
  290: 	if (!&Apache::response::show_answer()) {
  291: 	    my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
  292: 	    my $maxlength;
  293: 	    if ($size eq '') { $size=20; } else {
  294: 		if ($size < 20) { $maxlength=$size; }
  295: 	    }
  296: 	    my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"},'<>&"');
  297: 	    if ($Apache::lonhomework::type ne 'exam') {
  298: 		my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
  299: 		$result='';
  300: 		if ($addchars) {
  301: 		    $result.=&addchars('HWVAL_'.$id,$addchars);
  302: 		}
  303: 		my $readonly=&Apache::lonxml::get_param('readonly',$parstack,
  304: 							$safeeval);
  305: 		if (lc($readonly) eq 'yes' 
  306: 		    || $Apache::inputtags::status[-1] eq 'CANNOT_ANSWER') {
  307: 		    $readonly=' readonly="readonly" ';
  308: 		} else {
  309: 		    $readonly='';
  310: 		}
  311: 		my $name = 'HWVAL_'.$id;
  312: 		if ($Apache::inputtags::status[-1] eq 'CANNOT_ANSWER') {
  313: 		    $name = "none";
  314: 		}
  315: 		$result.= '<input type="text" '.$readonly.' name="'.$name.'" value="'.
  316: 		    $oldresponse.'" size="'.$size.'" maxlength="'.$maxlength.'" />';
  317: 	    }
  318: 	    if ($Apache::lonhomework::type eq 'exam'
  319: 		&& &needs_exam_box($tagstack)) {
  320: 		$result.=&exam_box($target);
  321: 	    }
  322: 	} else {
  323: 	    #right or wrong don't show what was last typed in.
  324: 	    $result='<b>'.$Apache::inputtags::answertxt{$id}.'</b>';
  325: 	    #$result='';
  326: 	}
  327:     } elsif ($target eq 'edit') {
  328: 	$result=&Apache::edit::tag_start($target,$token);
  329: 	$result.=&Apache::edit::text_arg('Size:','size',$token,'5').
  330: 	    &Apache::edit::text_arg('Click-On Texts (comma sep):',
  331: 				    'addchars',$token,10);
  332:         $result.=&Apache::edit::select_arg('Readonly:','readonly',
  333: 					   ['no','yes'],$token);
  334: 	$result.=&Apache::edit::end_row();
  335: 	$result.=&Apache::edit::end_table();
  336:     } elsif ($target eq 'modified') {
  337: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  338: 						     $safeeval,'size',
  339: 						     'addchars','readonly');
  340: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
  341:     } elsif ($target eq 'tex' 
  342: 	     && $Apache::lonhomework::type ne 'exam') {
  343: 	my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
  344: 	if ($size != 0) {$size=$size*2; $size.=' mm';} else {$size='40 mm';}
  345: 	$result='\framebox['.$size.'][s]{\tiny\strut}';
  346: 
  347:     } elsif ($target eq 'tex' 
  348: 	     && $Apache::lonhomework::type eq 'exam'
  349: 	     && &needs_exam_box($tagstack)) {
  350: 	$result.=&exam_box($target);
  351:     }
  352:     return $result;
  353: }
  354: 
  355: sub end_textline {
  356:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  357:     if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
  358:     elsif ($target eq 'edit') { return ('','no'); }
  359:     return "";
  360: }
  361: 
  362: sub start_hiddenline {
  363:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  364:     my $result = "";
  365:     if ($target eq 'web') {
  366: 	$Apache::lonxml::evaluate--;
  367: 	if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
  368: 	    my $partid=$Apache::inputtags::part;
  369: 	    my $id=$Apache::inputtags::response[-1];
  370: 	    my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"},'<>&"');
  371: 	    if ($Apache::lonhomework::type ne 'exam') {
  372: 		$result= '<input type="hidden" name="HWVAL_'.$id.'" value="'.
  373: 		    $oldresponse.'" />';
  374: 	    }
  375: 	}
  376:     } elsif ($target eq 'edit') {
  377: 	$result=&Apache::edit::tag_start($target,$token);
  378: 	$result.=&Apache::edit::end_table;
  379:     }
  380: 
  381:     if ( ($target eq 'web' || $target eq 'tex')
  382: 	 && $Apache::lonhomework::type eq 'exam'
  383: 	 && &needs_exam_box($tagstack)) {
  384: 	$result.=&exam_box($target);
  385:     }
  386:     return $result;
  387: }
  388: 
  389: sub end_hiddenline {
  390:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
  391:     if    ($target eq 'web') { $Apache::lonxml::evaluate++; }
  392:     elsif ($target eq 'edit') { return ('','no'); }
  393:     return "";
  394: }
  395: 
  396: # $part -> partid
  397: # $id -> responseid
  398: # $uploadefiletypes -> comma seperated list of extensions allowed or * for any
  399: # $which -> 'uploadedonly'  -> only newly uploaded files
  400: #           'portfolioonly' -> only allow files from portfolio
  401: #           'both' -> allow files from either location
  402: # $extratext -> additional text to go between the link and the input box
  403: # returns a table row <tr> 
  404: sub file_selector {
  405:     my ($part,$id,$uploadedfiletypes,$which,$extratext)=@_;
  406:     if (!$uploadedfiletypes) { return ''; }
  407: 
  408:     my $jspart=$part;
  409:     $jspart=~s/\./_/g;
  410: 
  411:     my $result;
  412:     
  413:     $result.='<tr><td>';
  414:     if ($uploadedfiletypes ne '*') {
  415: 	$result.=
  416: 	    &mt('Allowed filetypes: <b>[_1]</b>',$uploadedfiletypes).'<br />';
  417:     }
  418:     if ($which eq 'uploadonly' || $which eq 'both') { 
  419: 	$result.=&mt('Submit a file: (only one file can be uploaded)').
  420: 	    ' <br /><input type="file" size="50" name="HWFILE'.
  421: 	    $jspart.'_'.$id.'" /><br />';
  422: 	$result .= &show_past_file_submission($part,$id);
  423:     }
  424:     if ( $which eq 'both') { 
  425: 	$result.='<br />'.'<strong>'.&mt('OR:').'</strong><br />';
  426:     }
  427:     if ($which eq 'portfolioonly' || $which eq 'both') { 
  428: 	$result.=$extratext.'<a href='."'".'javascript:void(window.open("/adm/portfolio?mode=selectfile&amp;fieldname=HWPORT'.$jspart.'_'.$id.'","cat","height=600,width=800,scrollbars=1,resizable=1,menubar=2,location=1"))'."'".'>'.
  429: 	    &mt('Select Portfolio Files').'</a><br />'.
  430: 	    '<input type="text" size="50" name="HWPORT'.$jspart.'_'.$id.'" value="" />'.
  431: 	    '<br />';
  432: 	$result .= &show_past_portfile_submission($part,$id);
  433: 
  434:     }
  435:     $result.='</td></tr>'; 
  436:     return $result;
  437: }
  438: 
  439: sub show_past_file_submission {
  440:     my ($part,$id) = @_;
  441:     my $uploadedfile= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.uploadedfile"},'<>&"');
  442: 
  443:     return if (!$uploadedfile);
  444: 
  445:     my $url=$Apache::lonhomework::history{"resource.$part.$id.uploadedurl"};
  446:     &Apache::lonxml::extlink($url);
  447:     &Apache::lonnet::allowuploaded('/adm/essayresponse',$url);
  448:     my $icon=&Apache::loncommon::icon($url);
  449:     my $curfile='<a href="'.$url.'"><img src="'.$icon.
  450: 	'" border="0" />'.$uploadedfile.'</a>';
  451:     return &mt('Currently submitted: <tt>[_1]</tt>',$curfile);
  452: 
  453: }
  454: 
  455: sub show_past_portfile_submission {
  456:     my ($part,$id) = @_;
  457:     if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"}!~/[^\s]/){
  458: 	return;
  459:     }
  460:     my (@file_list,@bad_file_list);
  461:     foreach my $file (split(/\s*,\s*/,&unescape($Apache::lonhomework::history{"resource.$part.$id.portfiles"}))) {
  462: 	my (undef,undef,$domain,$user)=&Apache::lonxml::whichuser();
  463: 	my $url="/uploaded/$domain/$user/portfolio$file";
  464: 	my $icon=&Apache::loncommon::icon($url);
  465: 	push(@file_list,'<a href="'.$url.'"><img src="'.$icon.
  466: 	     '" border="0" />'.$file.'</a>');
  467: 	if (! &Apache::lonnet::stat_file($url)) {
  468: 	    &Apache::lonnet::logthis("bad file is $url");
  469: 	    push(@bad_file_list,'<a href="'.$url.'"><img src="'.$icon.
  470: 		 '" border="0" />'.$file.'</a>');
  471: 	}
  472:     }
  473:     my $files = '<span class="LC_filename">'.
  474: 	join('</span>, <span class="LC_filename">',@file_list).
  475: 	'</span>';
  476:     my $result = &mt("Portfolio files previously selected: [_1]",$files);
  477:     if (@bad_file_list) {
  478: 	my $bad_files = '<span class="LC_filename">'.
  479: 	    join('</span>, <span class="LC_filename">',@bad_file_list).
  480: 	    '</span>';
  481: 	$result.='<br />'.&mt('<span class="LC_error">These file(s) don\'t exist:</span> [_1]',$bad_files);
  482:     }
  483:     return $result;
  484: 
  485: }
  486: 
  487: sub checkstatus {
  488:     my ($value,$awardref,$msgref)=@_;
  489:     for (my $i=0;$i<=$#$awardref;$i++) {
  490: 	if ($$awardref[$i] eq $value) {
  491: 	    return ($$awardref[$i],$$msgref[$i]);
  492: 	}
  493:     }
  494:     return(undef,undef);
  495: }
  496: 
  497: sub valid_award {
  498:     my ($award) =@_;
  499:     foreach my $possibleaward ('EXTRA_ANSWER','MISSING_ANSWER', 'ERROR',
  500: 			       'NO_RESPONSE',
  501: 			       'TOO_LONG', 'UNIT_INVALID_INSTRUCTOR',
  502: 			       'UNIT_INVALID_STUDENT', 'UNIT_IRRECONCIBLE',
  503: 			       'UNIT_FAIL', 'NO_UNIT',
  504: 			       'UNIT_NOTNEEDED', 'WANTED_NUMERIC',
  505: 			       'BAD_FORMULA', 'SIG_FAIL', 'INCORRECT', 
  506: 			       'MISORDERED_RANK', 'INVALID_FILETYPE',
  507: 			       'DRAFT', 'SUBMITTED', 'ASSIGNED_SCORE',
  508: 			       'APPROX_ANS', 'EXACT_ANS','COMMA_FAIL') {
  509: 	if ($award eq $possibleaward) { return 1; }
  510:     }
  511:     return 0;
  512: }
  513: 
  514: sub finalizeawards {
  515:     my ($awardref,$msgref,$nameref,$reverse)=@_;
  516:     my $result=undef;
  517:     my $award;
  518:     my $msg;
  519:     if ($#$awardref == -1) { $result = "NO_RESPONSE"; }
  520:     if ($result eq '' ) {
  521: 	my $blankcount;
  522: 	foreach $award (@$awardref) {
  523: 	    if ($award eq '') {
  524: 		$result='MISSING_ANSWER';
  525: 		$blankcount++;
  526: 	    }
  527: 	}
  528: 	if ($blankcount == ($#$awardref + 1)) { $result = 'NO_RESPONSE'; }
  529:     }
  530:     if (defined($result)) { return ($result,$msg); }
  531: 
  532:     # these awards are ordered from most important error through best correct
  533:     
  534:     my @awards = ('EXTRA_ANSWER', 'MISSING_ANSWER', 'ERROR', 'NO_RESPONSE',
  535: 		  'TOO_LONG',
  536: 		  'UNIT_INVALID_INSTRUCTOR', 'UNIT_INVALID_STUDENT',
  537: 		  'UNIT_IRRECONCIBLE', 'UNIT_FAIL', 'NO_UNIT',
  538: 		  'UNIT_NOTNEEDED', 'WANTED_NUMERIC', 'BAD_FORMULA',
  539: 		  'COMMA_FAIL', 'SIG_FAIL', 'INCORRECT', 'MISORDERED_RANK',
  540: 		  'INVALID_FILETYPE', 'DRAFT', 'SUBMITTED', 'ASSIGNED_SCORE',
  541: 		  'APPROX_ANS', 'EXACT_ANS');
  542:     if ($reverse) { @awards=reverse(@awards); }
  543:     foreach my $possibleaward (@awards) {
  544: 	($result,$msg)=&checkstatus($possibleaward,$awardref,$msgref);
  545: 	if (defined($result)) { return ($result,$msg); }
  546:     }
  547:     return ('ERROR',undef);
  548: }
  549: 
  550: sub decideoutput {
  551:     my ($award,$awarded,$awardmsg,$solved,$previous,$target)=@_;
  552:     my $message='';
  553:     my $button=0;
  554:     my $previousmsg;
  555:     my $bgcolor='orange';
  556:     my $added_computer_text=0;
  557:     my %possiblecolors =
  558: 	( 'correct'         => '#aaffaa',
  559: 	  'charged_try'     => '#ffaaaa',
  560: 	  'not_charged_try' => '#ffffaa',
  561: 	  'no_grade'        => '#ffffaa',
  562: 	  'no_message'      => '#ffffff',
  563: 	  );
  564: 
  565:     my $part = $Apache::inputtags::part;
  566:     my $handgrade = 
  567: 	('yes' eq lc(&Apache::lonnet::EXT("resource.$part.handgrade")));
  568:     
  569:     my $computer = ($handgrade)? ''
  570: 	                       : " ".&mt("Computer's answer now shown above.");
  571:     &Apache::lonxml::debug("handgrade has :$handgrade:");
  572: 
  573:     if ($previous) { $previousmsg=&mt('You have entered that answer before'); }
  574:     
  575:     if ($solved =~ /^correct/) {
  576:         $bgcolor=$possiblecolors{'correct'};
  577: 	$message=&mt('You are correct.');
  578: 	if ($awarded < 1 && $awarded > 0) {
  579: 	    $message=&mt('You are partially correct.');
  580: 	    $bgcolor=$possiblecolors{'not_charged_try'};
  581: 	} elsif ($awarded < 1) {
  582: 	    $message=&mt('Incorrect.');
  583: 	    $bgcolor=$possiblecolors{'charged_try'};
  584: 	}
  585: 	if ($env{'request.filename'} =~ 
  586: 	    m|/res/lib/templates/examupload.problem$|) {
  587: 	    $message = &mt("A score has been assigned.");
  588: 	    $added_computer_text=1;
  589: 	} else {
  590: 	    if ($target eq 'tex') {
  591: 		$message = '\textbf{'.$message.'}';
  592: 	    } else {
  593: 		$message = "<b>".$message."</b>";
  594: 		$message.= $computer;
  595: 	    }
  596: 	    $added_computer_text=1;
  597: 	    unless ($env{'course.'.
  598: 			     $env{'request.course.id'}.
  599: 			     '.disable_receipt_display'} eq 'yes') { 
  600: 		$message.=(($target eq 'web')?'<br />':' ').
  601: 		    &mt('Your receipt is').' '.&Apache::lonnet::receipt($Apache::inputtags::part).
  602: 		    (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
  603: 	    }
  604: 	}
  605: 	$button=0;
  606: 	$previousmsg='';
  607:     } elsif ($solved =~ /^excused/) {
  608: 	if ($target eq 'tex') {
  609: 	    $message = ' \textbf{'.&mt('You are excused from the problem.').'} ';
  610: 	} else {
  611: 	    $message = "<b>".&mt('You are excused from the problem.')."</b>";
  612: 	}
  613: 	$bgcolor=$possiblecolors{'charged_try'};
  614: 	$button=0;
  615: 	$previousmsg='';
  616:     } elsif ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {
  617: 	if ($solved =~ /^incorrect/ || $solved eq '') {
  618: 	    $message = &mt("Incorrect").".";
  619: 	    $bgcolor=$possiblecolors{'charged_try'};
  620: 	    $button=1;
  621: 	} else {
  622: 	    if ($target eq 'tex') {
  623: 		$message = '\textbf{'.&mt('You are correct.').'}';
  624: 	    } else {
  625: 		$message = "<b>".&mt('You are correct.')."</b>";
  626: 		$message.= $computer;
  627: 	    }
  628: 	    $added_computer_text=1;
  629: 	    unless ($env{'course.'.
  630: 			     $env{'request.course.id'}.
  631: 			     '.disable_receipt_display'} eq 'yes') { 
  632: 		$message.=(($target eq 'web')?'<br />':' ').
  633: 		    'Your receipt is '.&Apache::lonnet::receipt($Apache::inputtags::part).
  634: 		    (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
  635: 	    }
  636: 	    $bgcolor=$possiblecolors{'correct'};
  637: 	    $button=0;
  638: 	    $previousmsg='';
  639: 	}
  640:     } elsif ($award eq 'NO_RESPONSE') {
  641: 	$message = '';
  642: 	$bgcolor=$possiblecolors{'no_feedback'};
  643: 	$button=1;
  644:     } elsif ($award eq 'EXTRA_ANSWER') {
  645: 	$message = &mt('Some extra items were submitted.');
  646: 	$bgcolor=$possiblecolors{'not_charged_try'};
  647: 	$button = 1;
  648:     } elsif ($award eq 'MISSING_ANSWER') {
  649: 	$message = &mt('Some items were not submitted.');
  650: 	$bgcolor=$possiblecolors{'not_charged_try'};
  651: 	$button = 1;
  652:     } elsif ($award eq 'ERROR') {
  653: 	$message = &mt('An error occured while grading your answer.');
  654: 	$bgcolor=$possiblecolors{'not_charged_try'};
  655: 	$button = 1;
  656:     } elsif ($award eq 'TOO_LONG') {
  657: 	$message = &mt("The submitted answer was too long.");
  658: 	$bgcolor=$possiblecolors{'not_charged_try'};
  659: 	$button=1;
  660:     } elsif ($award eq 'WANTED_NUMERIC') {
  661: 	$message = &mt("This question expects a numeric answer.");
  662: 	$bgcolor=$possiblecolors{'not_charged_try'};
  663: 	$button=1;
  664:     } elsif ($award eq 'MISORDERED_RANK') {
  665: 	$message = &mt('You have provided an invalid ranking');
  666: 	if ($target ne 'tex') {
  667: 	    $message.=', '.&mt('please refer to').' '.&Apache::loncommon::help_open_topic('Ranking_Problems','help on ranking problems');
  668: 	}
  669: 	$bgcolor=$possiblecolors{'not_charged_try'};
  670: 	$button=1;
  671:     } elsif ($award eq 'INVALID_FILETYPE') {
  672: 	$message = &mt('Submission won\'t be graded. The type of file submitted is not allowed.');
  673: 	$bgcolor=$possiblecolors{'not_charged_try'};
  674: 	$button=1;
  675:     } elsif ($award eq 'SIG_FAIL') {
  676: 	my ($used,$min,$max)=split(':',$awardmsg);
  677: 	my $word;
  678: 	if ($used < $min) { $word=&mt('more'); }
  679: 	if ($used > $max) { $word=&mt('fewer'); }
  680: 	$message = &mt("Submission not graded.  Use [_2] digits.",$used,$word);
  681: 	$bgcolor=$possiblecolors{'not_charged_try'};
  682: 	$button=1;
  683:     } elsif ($award eq 'UNIT_INVALID_INSTRUCTOR') {
  684: 	$message = &mt('Error in instructor specifed unit. This error has been reported to the instructor.', $awardmsg);
  685: 	if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} 
  686: 	$bgcolor=$possiblecolors{'not_charged_try'};
  687: 	$button=1;
  688:     } elsif ($award eq 'UNIT_INVALID_STUDENT') {
  689: 	$message = &mt('Unable to interpret units. Computer reads units as "[_1]".',&markup_unit($awardmsg,$target));
  690: 	if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} 
  691: 	$bgcolor=$possiblecolors{'not_charged_try'};
  692: 	$button=1;
  693:     } elsif ($award eq 'UNIT_FAIL' || $award eq 'UNIT_IRRECONCIBLE') {
  694: 	$message = &mt('Incompatible units. No conversion found between "[_1]" and the required units.',&markup_unit($awardmsg,$target));
  695: 	if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} 
  696: 	$bgcolor=$possiblecolors{'not_charged_try'};
  697: 	$button=1;
  698:     } elsif ($award eq 'UNIT_NOTNEEDED') {
  699: 	$message = &mt('Only a number required. Computer reads units of "[_1]".',&markup_unit($awardmsg,$target));
  700: 	$bgcolor=$possiblecolors{'not_charged_try'};
  701: 	$button=1;
  702:     } elsif ($award eq 'NO_UNIT') {
  703: 	$message = &mt("Units required").'.';
  704: 	if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units')};
  705: 	$bgcolor=$possiblecolors{'not_charged_try'};
  706: 	$button=1;
  707:     } elsif ($award eq 'COMMA_FAIL') {
  708: 	$message = &mt("Proper comma separation is required").'.';
  709: 	$bgcolor=$possiblecolors{'not_charged_try'};
  710: 	$button=1;
  711:     } elsif ($award eq 'BAD_FORMULA') {
  712: 	$message = &mt("Unable to understand formula");
  713: 	$bgcolor=$possiblecolors{'not_charged_try'};
  714: 	$button=1;
  715:     } elsif ($award eq 'INCORRECT') {
  716: 	$message = &mt("Incorrect").'.';
  717: 	$bgcolor=$possiblecolors{'charged_try'};
  718: 	$button=1;
  719:     } elsif ($award eq 'SUBMITTED') {
  720: 	$message = &mt("Your submission has been recorded.");
  721: 	$bgcolor=$possiblecolors{'no_grade'};
  722: 	$button=1;
  723:     } elsif ($award eq 'DRAFT') {
  724: 	$message = &mt("A draft copy has been saved.");
  725: 	$bgcolor=$possiblecolors{'not_charged_try'};
  726: 	$button=1;
  727:     } elsif ($award eq 'ASSIGNED_SCORE') {
  728: 	$message = &mt("A score has been assigned.");
  729: 	$bgcolor=$possiblecolors{'correct'};
  730: 	$button=0;
  731:     } elsif ($award eq '') {
  732: 	if ($handgrade && $Apache::inputtags::status[-1] eq 'SHOW_ANSWER') {
  733: 	    $message = &mt("Nothing submitted.");
  734: 	    $bgcolor=$possiblecolors{'charged_try'};
  735: 	} else {
  736: 	    $bgcolor=$possiblecolors{'not_charged_try'};
  737: 	}
  738: 	$button=1;
  739:     } else {
  740: 	$message = &mt("Unknown message").": $award";
  741: 	$button=1;
  742:     }
  743:     my (undef,undef,$domain,$user)=&Apache::lonxml::whichuser();
  744:     foreach my $resid(@Apache::inputtags::response){
  745:         if ($Apache::lonhomework::history{"resource.$part.$resid.handback"}) {
  746: 	    $message.='<br />';
  747: 	    my @files = split(/\s*,\s*/,
  748: 			      $Apache::lonhomework::history{"resource.$part.$resid.handback"});
  749: 	    my $file_msg;
  750: 	    foreach my $file (@files) {
  751: 		$file_msg.= '<br /><a href="/uploaded/'."$domain/$user".'/'.$file.'">'.$file.'</a>';
  752: 	    }
  753: 	    $message .= &mt('Returned file(s): [_1]',$file_msg);
  754: 	}
  755:     }
  756: 
  757:     if (lc($Apache::lonhomework::problemstatus) eq 'no'  && 
  758: 	$Apache::inputtags::status[-1] ne 'SHOW_ANSWER') {
  759: 	$message = &mt("Answer Submitted: Your final submission will be graded after the due date.");
  760: 	$bgcolor=$possiblecolors{'no_grade'};
  761: 	$button=1;
  762:     }
  763:     if ($Apache::inputtags::status[-1] eq 'SHOW_ANSWER' && 
  764: 	!$added_computer_text && $target ne 'tex') {
  765: 	$message.= $computer;
  766: 	$added_computer_text=1;
  767:     }
  768:     return ($button,$bgcolor,$message,$previousmsg);
  769: }
  770: 
  771: sub markup_unit {
  772:     my ($unit,$target)=@_;
  773:     if ($target eq 'tex') {
  774: 	return '\texttt{'.&Apache::lonxml::latex_special_symbols($unit).'}'; 
  775:     } else {
  776: 	return "<tt>".$unit."</tt>";
  777:     }
  778: }
  779: 
  780: sub removealldata {
  781:     my ($id)=@_;
  782:     foreach my $key (keys(%Apache::lonhomework::results)) {
  783: 	if (($key =~ /^resource\.\Q$id\E\./) && ($key !~ /\.collaborators$/)) {
  784: 	    &Apache::lonxml::debug("Removing $key");
  785: 	    delete($Apache::lonhomework::results{$key});
  786: 	}
  787:     }
  788: }
  789: 
  790: sub hidealldata {
  791:     my ($id)=@_;
  792:     foreach my $key (keys(%Apache::lonhomework::results)) {
  793: 	if (($key =~ /^resource\.\Q$id\E\./) && ($key !~ /\.collaborators$/)) {
  794: 	    &Apache::lonxml::debug("Hidding $key");
  795: 	    my $newkey=$key;
  796: 	    $newkey=~s/^(resource\.\Q$id\E\.[^\.]+\.)(.*)$/${1}hidden${2}/;
  797: 	    $Apache::lonhomework::results{$newkey}=
  798: 		$Apache::lonhomework::results{$key};
  799: 	    delete($Apache::lonhomework::results{$key});
  800: 	}
  801:     }
  802: }
  803: 
  804: sub setgradedata {
  805:     my ($award,$msg,$id,$previously_used) = @_;
  806:     if ($Apache::lonhomework::scantronmode && 
  807: 	&Apache::lonnet::validCODE($env{'form.CODE'})) {
  808: 	$Apache::lonhomework::results{"resource.CODE"}=$env{'form.CODE'};
  809:     } elsif ($Apache::lonhomework::scantronmode && 
  810: 	     $env{'form.CODE'} eq '' &&
  811: 	     $Apache::lonhomework::history{"resource.CODE"} ne '') {
  812: 	$Apache::lonhomework::results{"resource.CODE"}='';
  813:     }
  814: 
  815:     if (!$Apache::lonhomework::scantronmode &&
  816: 	$Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
  817: 	$Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
  818: 	$Apache::lonhomework::results{"resource.$id.afterduedate"}=$award;
  819: 	return '';
  820:     } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} !~
  821: 	      /^correct/ || $Apache::lonhomework::scantronmode ||
  822: 	      lc($Apache::lonhomework::problemstatus) eq 'no') {
  823:         # the student doesn't already have it correct,
  824: 	# or we are in a mode (scantron orno problem status) where a correct 
  825:         # can become incorrect
  826: 	# handle assignment of tries and solved status
  827: 	my $solvemsg;
  828: 	if ($Apache::lonhomework::scantronmode) {
  829: 	    $solvemsg='correct_by_scantron';
  830: 	} else {
  831: 	    $solvemsg='correct_by_student';
  832: 	}
  833: 	if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
  834: 	    $Apache::lonhomework::results{"resource.$id.afterduedate"}='';
  835: 	}
  836: 	if ( $award eq 'ASSIGNED_SCORE') {
  837: 	    $Apache::lonhomework::results{"resource.$id.tries"} =
  838: 		$Apache::lonhomework::history{"resource.$id.tries"} + 1;
  839: 	    $Apache::lonhomework::results{"resource.$id.solved"} =
  840: 		$solvemsg;
  841: 	    my $numawards=scalar(@Apache::inputtags::response);
  842: 	    $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
  843: 	    foreach my $res (@Apache::inputtags::response) {
  844: 		$Apache::lonhomework::results{"resource.$id.awarded"}+=
  845: 		    $Apache::lonhomework::results{"resource.$id.$res.awarded"};
  846: 	    }
  847: 	    if ($numawards > 0) {
  848: 		$Apache::lonhomework::results{"resource.$id.awarded"}/=
  849: 		    $numawards;
  850: 	    }
  851: 	} elsif ( $award eq 'APPROX_ANS' || $award eq 'EXACT_ANS' ) {
  852: 	    $Apache::lonhomework::results{"resource.$id.tries"} =
  853: 		$Apache::lonhomework::history{"resource.$id.tries"} + 1;
  854: 	    $Apache::lonhomework::results{"resource.$id.solved"} =
  855: 		$solvemsg;
  856: 	    $Apache::lonhomework::results{"resource.$id.awarded"} = '1';
  857: 	} elsif ( $award eq 'INCORRECT' ) {
  858: 	    $Apache::lonhomework::results{"resource.$id.tries"} =
  859: 		$Apache::lonhomework::history{"resource.$id.tries"} + 1;
  860: 	    if (lc($Apache::lonhomework::problemstatus) eq 'no' ||
  861: 		$Apache::lonhomework::scantronmode) {
  862: 		$Apache::lonhomework::results{"resource.$id.awarded"} = 0;
  863: 	    }
  864: 	    $Apache::lonhomework::results{"resource.$id.solved"} =
  865: 		'incorrect_attempted';
  866: 	} elsif ( $award eq 'SUBMITTED' ) {
  867: 	    $Apache::lonhomework::results{"resource.$id.tries"} =
  868: 		$Apache::lonhomework::history{"resource.$id.tries"} + 1;
  869: 	    $Apache::lonhomework::results{"resource.$id.solved"} =
  870: 		'ungraded_attempted';
  871: 	} elsif ( $award eq 'DRAFT' ) {
  872: 	    $Apache::lonhomework::results{"resource.$id.solved"} = '';
  873: 	} elsif ( $award eq 'NO_RESPONSE' ) {
  874: 	    #no real response so delete any data that got stored
  875: 	    &removealldata($id);
  876: 	    return '';
  877: 	} else {
  878: 	    $Apache::lonhomework::results{"resource.$id.solved"} =
  879: 		'incorrect_attempted';
  880: 	    if (lc($Apache::lonhomework::problemstatus) eq 'no' ||
  881: 		$Apache::lonhomework::scantronmode) {
  882: 		$Apache::lonhomework::results{"resource.$id.tries"} =
  883: 		    $Apache::lonhomework::history{"resource.$id.tries"} + 1;
  884: 		$Apache::lonhomework::results{"resource.$id.awarded"} = 0;
  885: 	    }
  886: 	}
  887: 	if (defined($msg)) {
  888: 	    $Apache::lonhomework::results{"resource.$id.awardmsg"} = $msg;
  889: 	}
  890: 	# did either of the overall awards chage? If so ignore the 
  891: 	# previous check
  892: 	if (($Apache::lonhomework::results{"resource.$id.awarded"} eq
  893: 	     $Apache::lonhomework::history{"resource.$id.awarded"}) &&
  894: 	    ($Apache::lonhomework::results{"resource.$id.solved"} eq
  895: 	     $Apache::lonhomework::history{"resource.$id.solved"})) {
  896: 	    # check if this was a previous submission if it was delete the
  897: 	    # unneeded data and update the previously_used attribute
  898: 	    if ( $previously_used eq 'PREVIOUSLY_USED') {
  899: 		if (lc($Apache::lonhomework::problemstatus) ne 'no') {
  900: 		    delete($Apache::lonhomework::results{"resource.$id.tries"});
  901: 		    $Apache::lonhomework::results{"resource.$id.previous"} = '1';
  902: 		}
  903: 	    } elsif ( $previously_used eq 'PREVIOUSLY_LAST') {
  904: 		#delete all data as they student didn't do anything, but save
  905: 		#the list of collaborators.
  906: 		&removealldata($id);
  907: 		#and since they didn't do anything we were never here
  908: 		return '';
  909: 	    } else {
  910: 		$Apache::lonhomework::results{"resource.$id.previous"} = '0';
  911: 	    }
  912: 	}
  913:     } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} =~
  914: 	      /^correct/ ) {
  915: 	#delete all data as they student already has it correct
  916: 	&removealldata($id);
  917: 	#and since they didn't do anything we were never here
  918: 	return '';
  919:     }
  920:     $Apache::lonhomework::results{"resource.$id.award"} = $award;
  921:     if ($award eq 'SUBMITTED') {
  922: 	&Apache::response::add_to_gradingqueue();
  923:     }
  924: }
  925: 
  926: sub grade {
  927:     my ($target) = @_;
  928:     my $id = $Apache::inputtags::part;
  929:     my $response='';
  930:     if ( defined $env{'form.submitted'}) {
  931: 	my (@awards,@msgs);
  932: 	foreach $response (@Apache::inputtags::response) {
  933: 	    &Apache::lonxml::debug("looking for response.$id.$response.awarddetail");
  934: 	    my $value=$Apache::lonhomework::results{"resource.$id.$response.awarddetail"};
  935: 	    &Apache::lonxml::debug("keeping $value from $response for $id");
  936: 	    push (@awards,$value);
  937: 	    $value=$Apache::lonhomework::results{"resource.$id.$response.awardmsg"};
  938: 	    &Apache::lonxml::debug("got message $value from $response for $id");
  939: 	    push (@msgs,$value);
  940: 	}
  941: 	my ($finalaward,$msg) = &finalizeawards(\@awards,\@msgs);
  942: 	my $previously_used;
  943: 	if ( $#Apache::inputtags::previous eq $#awards ) {
  944: 	    my $match=0;
  945: 	    my @matches;
  946: 	    foreach my $versionar (@Apache::inputtags::previous_version) {
  947: 		foreach my $version (@$versionar) {
  948: 		    $matches[$version]++;
  949: 		}
  950: 	    }
  951: 	    foreach my $elem (@matches) {if ($elem eq ($#awards+1)) {$match=1;}}
  952: 	    if ($match) {
  953: 		$previously_used = 'PREVIOUSLY_LAST';
  954: 		foreach my $value (@Apache::inputtags::previous) {
  955: 		    if ($value eq 'PREVIOUSLY_USED' ) {
  956: 			$previously_used = $value;
  957: 			last;
  958: 		    }
  959: 		}
  960: 	    }
  961: 	}
  962: 	&Apache::lonxml::debug("final award $finalaward, $previously_used, message $msg");
  963: 	&setgradedata($finalaward,$msg,$id,$previously_used);
  964:     }
  965:     return '';
  966: }
  967: 
  968: sub gradestatus {
  969:     my ($id,$target) = @_;
  970:     my $showbutton = 1;
  971:     my $bgcolor = '';
  972:     my $message = '';
  973:     my $latemessage = '';
  974:     my $trystr='';
  975:     my $button='';
  976:     my $previousmsg='';
  977: 
  978:     my $status = $Apache::inputtags::status['-1'];
  979:     &Apache::lonxml::debug("gradestatus has :$status:");
  980:     if ( $status ne 'CLOSED' 
  981: 	 && $status ne 'UNAVAILABLE' 
  982: 	 && $status ne 'INVALID_ACCESS' 
  983: 	 && $status ne 'NEEDS_CHECKIN' 
  984: 	 && $status ne 'NOT_IN_A_SLOT') {  
  985: 	my $award = $Apache::lonhomework::history{"resource.$id.award"};
  986: 	my $awarded = $Apache::lonhomework::history{"resource.$id.awarded"};
  987: 	my $solved = $Apache::lonhomework::history{"resource.$id.solved"};
  988: 	my $previous = $Apache::lonhomework::history{"resource.$id.previous"};
  989: 	my $awardmsg = $Apache::lonhomework::history{"resource.$id.awardmsg"};
  990: 	&Apache::lonxml::debug("Found Award |$award|$solved|$awardmsg");
  991: 	if ( $award ne '' || $solved ne '' || $status eq 'SHOW_ANSWER') {
  992: 	    &Apache::lonxml::debug('Getting message');
  993: 	    ($showbutton,$bgcolor,$message,$previousmsg) =
  994: 		&decideoutput($award,$awarded,$awardmsg,$solved,$previous,
  995: 			      $target);
  996: 	    if ($target eq 'tex') {
  997: 		$message='\vskip 2 mm '.$message.' ';
  998: 	    } else {
  999: 		$message="<td bgcolor=\"$bgcolor\">$message</td>";
 1000: 		if ($previousmsg) {
 1001: 		    $previousmsg="<td bgcolor=\"#aaaaff\">$previousmsg</td>";
 1002: 		}
 1003: 	    }
 1004: 	}
 1005: 	my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
 1006: 	my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
 1007: 	&Apache::lonxml::debug("got maxtries of :$maxtries:");
 1008: 	#if tries are set to negative turn off the Tries/Button and messages
 1009: 	if (defined($maxtries) && $maxtries < 0) { return ''; }
 1010: 	if ( $tries eq '' ) { $tries = '0'; }
 1011: 	if ( $maxtries eq '' ) { $maxtries = '2'; } 
 1012: 	if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; } 
 1013: 	my $tries_text=&mt('Tries');
 1014: 	if ( $Apache::lonhomework::type eq 'survey' ||
 1015: 	     $Apache::lonhomework::parsing_a_task) {
 1016: 	    $tries_text=&mt('Submissions');
 1017: 	}
 1018: 	if ( $showbutton ) {
 1019: 	    if ($target eq 'tex') {
 1020: 		if ($env{'request.state'} ne "construct" && $Apache::lonhomework::type ne 'exam' && $env{'form.suppress_tries'} ne 'yes') {
 1021: 		    $trystr = ' {\vskip 1 mm \small \textit{'.$tries_text.'} '.$tries.'/'.$maxtries.'} \vskip 2 mm ';
 1022: 		} else {
 1023: 		    $trystr = '\vskip 0 mm ';
 1024: 		}
 1025: 	    } else {
 1026: 		$trystr = "<td><nobr>".$tries_text." $tries";
 1027: 		if ($Apache::lonhomework::parsing_a_task) {
 1028: 		} elsif($env{'request.state'} ne 'construct') {
 1029: 		    $trystr.="/$maxtries";
 1030: 		} else {
 1031: 		    if (defined($Apache::inputtags::params{'maxtries'})) {
 1032: 			$trystr.="/".$Apache::inputtags::params{'maxtries'};
 1033: 		    }
 1034: 		}
 1035: 		$trystr.="</nobr></td>";
 1036: 	    }
 1037: 	}
 1038: 	if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {$showbutton = 0;}
 1039: 	if ( $showbutton ) { 
 1040: 	    if ($target ne 'tex') {
 1041: 		$button = '<input type="submit" name="submit_'.$id.'" value="'.&mt('Submit Answer').'" />';
 1042: 	    }
 1043: 	}
 1044: 	if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
 1045: 	    #last submissions was after due date
 1046: 	    $latemessage=&mt(' The last submission was after the Due Date ');;
 1047: 	    if ($target eq 'web') {
 1048: 		$latemessage='<td bgcolor="#ffaaaa">'.$latemessage.'</td>';
 1049: 	    }
 1050: 	}
 1051:     }
 1052:     my $output= $previousmsg.$latemessage.$message.$trystr;
 1053:     if ($output =~ /^\s*$/) {
 1054: 	return $button;
 1055:     } else {
 1056: 	if ($target eq 'tex') {
 1057: 	    return $button.' \vskip 0 mm '.$output.' ';
 1058: 	} else {
 1059: 	    return '<table><tr><td>'.$button.'</td>'.$output.'</tr></table>';
 1060: 	}
 1061:     }
 1062: }
 1063: 1;
 1064: __END__
 1065:  

FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>