File:  [LON-CAPA] / loncom / homework / matchresponse.pm
Revision 1.4: download - view: text, annotated - select for diffs
Thu Feb 20 09:55:07 2003 UTC (21 years, 2 months ago) by albertel
Branches: MAIN
CVS tags: HEAD
- Fixes most of BUG#1260, but uncertain how to provide access to table color/alignment/border, leaning towards naming the elements and then letting the instructor use CSS

    1: # The LearningOnline Network with CAPA
    2: # Full matching style response
    3: #
    4: # $Id: matchresponse.pm,v 1.4 2003/02/20 09:55:07 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: # 2/21 Guy
   29: 
   30: package Apache::matchresponse;
   31: use strict;
   32: use HTML::Entities();
   33: use Math::Random();
   34: 
   35: BEGIN {
   36:     &Apache::lonxml::register('Apache::matchresponse',('matchresponse'));
   37: }
   38: 
   39: sub start_matchresponse {
   40:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   41:     my $result;
   42:     #when in a matchresponse use these
   43:     &Apache::lonxml::register('Apache::matchresponse',
   44: 			      ('foilgroup','foil','conceptgroup','item',
   45: 			       'itemgroup'));
   46:     push (@Apache::lonxml::namespace,'matchresponse');
   47:     my $id = &Apache::response::start_response($parstack,$safeeval);
   48:     %Apache::hint::match=();
   49:     if ($target eq 'meta') {
   50: 	$result=&Apache::response::meta_package_write('matchresponse');
   51:     } elsif ($target eq 'edit' ) {
   52: 	$result.=&Apache::edit::start_table($token).
   53: 	    '<tr><td>'.&Apache::lonxml::description($token)."</td><td>Delete:".
   54: 	    &Apache::edit::deletelist($target,$token)
   55: 	    ."</td><td>&nbsp".&Apache::edit::end_row()
   56: 	    .&Apache::edit::start_spanning_row();
   57: 	
   58: 	$result.=
   59: 	    &Apache::edit::text_arg('Max Number Of Shown Foils:','max',$token,'4').
   60: 	    &Apache::edit::select_arg('Randomize Foil Order','randomize',
   61: 				      ['yes','no'],$token).
   62: 	    &Apache::edit::end_row().&Apache::edit::start_spanning_row()."\n";
   63:     } elsif ($target eq 'modified') {
   64: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
   65: 						     $safeeval,'max',
   66: 						     'randomize');
   67: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
   68:     }
   69:     return $result;
   70: }
   71: 
   72: sub end_matchresponse {
   73:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   74:     my $result;
   75:     if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
   76:     &Apache::response::end_response;
   77:     pop @Apache::lonxml::namespace;
   78:     &Apache::lonxml::deregister('Apache::matchresponse',
   79: 				('foilgroup','foil','conceptgroup'));
   80:     return $result;
   81: }
   82: 
   83: %Apache::response::itemgroup=();
   84: sub start_itemgroup {
   85:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
   86:     my $result;
   87:     %Apache::response::itemgroup=();
   88:     %Apache::matchresponse::itemtable=();
   89:     if ($target eq 'edit') {
   90: 	$result=&Apache::edit::tag_start($target,$token);
   91: 	$result.=&Apache::edit::select_arg('Randomize Order:','randomize',
   92: 					   ['yes','no'],$token);
   93: 	$result.=&Apache::edit::select_arg('Items Display Location:',
   94: 					   'location',
   95: 					   ['top','bottom','left','right'],
   96: 					   $token);
   97: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
   98:     } elsif ($target eq 'modified') {
   99: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  100: 						     $safeeval,'randomize',
  101: 						     'location');
  102: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
  103:     } elsif ($target eq 'web') {
  104: 	$Apache::matchresponse::itemtable{'location'}=
  105: 	    &Apache::lonxml::get_param('location',$parstack,$safeeval);
  106:     }
  107:     return $result;
  108: }
  109: 
  110: sub end_itemgroup {
  111:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  112:     my $result;
  113: 
  114:     if (!defined(@{ $Apache::response::itemgroup{'names'} })) { return; }
  115:     my @names=@{ $Apache::response::itemgroup{'names'} };
  116:     my $randomize =&Apache::lonxml::get_param('randomize',$parstack,$safeeval);
  117:     if ($randomize ne 'no' ) {
  118: 	@names=&whichorder($#names+1,$randomize,0,
  119: 			   \%Apache::response::itemgroup)
  120:     }
  121:     my %letter_name_map;
  122:     my %name_letter_map;
  123:     my @alphabet=('A'..'Z');
  124:     my $i=0;
  125:     foreach my $name (@names) {
  126: 	$letter_name_map{$alphabet[$i]}=$name;
  127: 	$name_letter_map{$name}=$alphabet[$i];
  128: 	$i++;
  129:     }
  130:     $Apache::response::itemgroup{'letter_name_map'}=\%letter_name_map;
  131:     $Apache::response::itemgroup{'name_letter_map'}=\%name_letter_map;
  132:     if ($target eq 'web') {
  133: 	my $table='<table>';
  134: 	my $i=0;
  135: 	foreach my $name (@names) {
  136: 	    $table.='<tr><td>'.$alphabet[$i].'</td><td>'.
  137: 		$Apache::response::itemgroup{$name.'.text'}.
  138: 		    '</td></tr>';
  139: 	    $i++;
  140: 	}
  141: 	$table.='</table>';
  142: 	$Apache::matchresponse::itemtable{'display'}=$table;
  143:     } elsif ($target eq 'edit') { $result=&Apache::edit::end_table(); }
  144:     return $result;
  145: }
  146: 
  147: sub start_item {
  148:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  149:     my $result='';
  150:     if ($target eq 'web' ) {
  151: 	&Apache::lonxml::startredirection;
  152:     } elsif ($target eq 'edit') {
  153: 	my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
  154: 						 $safeeval,'-2');
  155: 	$result=&Apache::edit::tag_start($target,$token,"Item");
  156: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
  157: 	if ($randomize ne 'no') {
  158: 	    $result.=&Apache::edit::select_arg('Location:','location',
  159: 					       ['random','top','bottom'],
  160: 					       $token);
  161: 	}
  162: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
  163:     } elsif ($target eq 'modified') {
  164: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  165: 						     $safeeval,'name',
  166: 						     'location');
  167: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
  168:     }
  169:     return $result;
  170: }
  171: 
  172: sub end_item {
  173:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  174:     my $text ='';
  175:     my $result = '';
  176:     if ($target eq 'web') {
  177: 	$text=&Apache::lonxml::endredirection;
  178:     }
  179:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
  180: 	$target eq 'edit') {
  181: 	my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
  182: 	my $location=&Apache::lonxml::get_param('location',$parstack,
  183: 						$safeeval);
  184: 	&Apache::lonxml::debug("Got a name of :$name:");
  185: 	if (!$name) { $name=$Apache::lonxml::curdepth; }
  186: 	&Apache::lonxml::debug("Using a name of :$name:");
  187: 	push @{ $Apache::response::itemgroup{'names'} }, $name;
  188: 	$Apache::response::itemgroup{"$name.text"} = $text;
  189: 	$Apache::response::itemgroup{"$name.location"} = $location;
  190:     }
  191:     if ($target eq 'edit') {
  192: 	$result.= &Apache::edit::tag_end($target,$token,'');
  193:     }
  194:     return $result;
  195: }
  196: 
  197: sub insert_item {
  198:     return '
  199: <item name="">
  200: <startouttext />
  201: <endouttext />
  202: </item>';
  203: }
  204: 
  205: %Apache::response::foilgroup=();
  206: sub start_foilgroup {
  207:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  208:     my $result;
  209:     %Apache::response::foilgroup=();
  210:     $Apache::matchresponse::conceptgroup=0;
  211:     &Apache::response::setrandomnumber();
  212:     if ($target eq 'edit') {
  213: 	$result.=&Apache::edit::start_table($token)
  214: 	    ."<tr><td>Collection Of Foils</td><td>Delete:"
  215: 	    .&Apache::edit::deletelist($target,$token)
  216: 	    ."</td><td>&nbsp;".&Apache::edit::end_row()
  217:             .&Apache::edit::start_spanning_row()."\n";
  218:     }
  219:     return $result;
  220: }
  221: 
  222: sub end_foilgroup {
  223:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  224:     my $result;
  225:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer') {
  226: 	my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
  227: 	my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
  228: 						   $safeeval,'-2');
  229: 	if ($target eq 'web') {
  230: 	    $result=&displayfoils($target,$max,$randomize);
  231: 	} elsif ($target eq 'answer' ) {
  232: 	    $result=&displayanswers($max,$randomize);
  233: 	} elsif ( $target eq 'grade') {
  234: 	    &grade_response($max,$randomize);
  235: 	}
  236:     } elsif ($target eq 'edit') {
  237: 	$result=&Apache::edit::end_table();
  238:     }
  239:     return $result;
  240: }
  241: 
  242: sub displayanswers {
  243:     my ($max,$randomize,@opt)=@_;
  244:     if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; }
  245:     my @names = @{ $Apache::response::foilgroup{'names'} };
  246:     my @whichfoils = &whichorder(&getfoilcounts($max),$randomize,
  247: 				 &Apache::response::showallfoils(),
  248: 				 \%Apache::response::foilgroup);
  249:     my $result=&Apache::response::answer_header('matchresponse');
  250:     my %name_letter_map;
  251:     if (defined(%{ $Apache::response::itemgroup{'name_letter_map'} })) {
  252: 	%name_letter_map=
  253: 	    %{ $Apache::response::itemgroup{'name_letter_map'} };
  254:     }
  255:     foreach my $name (@whichfoils) {
  256: 	my $value_name=$Apache::response::foilgroup{$name.'.value'};
  257: 	my $letter=$name_letter_map{$value_name};
  258: 	$result.=&Apache::response::answer_part('matchresponse',$letter);
  259:     }
  260:     $result.=&Apache::response::answer_footer('matchresponse');
  261:     return $result;
  262: }
  263: 
  264: 
  265: sub grade_response {
  266:     my ($max,$randomize)=@_;
  267:     my (@whichfoils)=&whichorder(&getfoilcounts($max),$randomize,
  268: 				 &Apache::response::showallfoils(),
  269: 				 \%Apache::response::foilgroup);
  270:     if (!defined($ENV{'form.submitted'})) { return; }
  271:     my %responsehash;
  272:     my %grade;
  273:     my ($temp,$right,$wrong,$ignored)=(0,0,0,0);
  274:     my %letter_name_map;
  275:     if (defined(%{ $Apache::response::itemgroup{'letter_name_map'} })) {
  276: 	%letter_name_map=
  277: 	    %{ $Apache::response::itemgroup{'letter_name_map'} };
  278:     }
  279:     foreach my $name (@whichfoils) {
  280: 	my $response = $ENV{'form.HWVAL_'.$Apache::inputtags::response['-1'].":$temp"};
  281: 	my $responsename = $letter_name_map{$response};
  282: 	$responsehash{$name}=$responsename;
  283: 	my $value=$Apache::response::foilgroup{$name.'.value'};
  284: 	if ( $response =~ /[^\s]/) {
  285: 	    &Apache::lonxml::debug("submitted a $response for $value<br />\n");
  286: 	    if ($value eq $responsename) {
  287: 		$grade{$name}='1'; $right++;
  288: 	    } else {
  289: 		$grade{$name}='0'; $wrong++;
  290: 	    }
  291: 	} else {
  292: 	    $ignored++;
  293: 	}
  294: 	$temp++;
  295:     }
  296:     my $part=$Apache::inputtags::part;
  297:     my $id = $Apache::inputtags::response['-1'];
  298:     my $responsestr=&Apache::lonnet::hash2str(%responsehash);
  299:     my $gradestr   =&Apache::lonnet::hash2str(%grade);
  300:     my %previous =&Apache::response::check_for_previous($responsestr,
  301: 							$part,$id);
  302:     &Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored ");
  303:     my $ad;
  304:     if ($wrong==0 && $ignored==0) {
  305: 	$ad='EXACT_ANS';
  306:     } elsif ($wrong==0 && $right==0) {
  307: 	#nothing submitted
  308:     } else {
  309: 	if ($ignored==0) {
  310: 	    $ad='INCORRECT';
  311: 	} else {
  312: 	    $ad='MISSING_ANSWER';
  313: 	}
  314:     }
  315:     $Apache::lonhomework::results{"resource.$part.$id.submission"}=
  316: 	$responsestr;
  317:     $Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=
  318: 	$gradestr;
  319:     $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
  320:     &Apache::response::handle_previous(\%previous,$ad);
  321: }
  322: 
  323: sub itemdisplay {
  324:     my ($location)=@_;
  325:     if ($location eq 'top' &&
  326: 	!defined($Apache::matchresponse::itemtable{'location'})) {
  327: 	return $Apache::matchresponse::itemtable{'display'};
  328:     }
  329:     if ($Apache::matchresponse::itemtable{'location'} eq $location) {
  330: 	return $Apache::matchresponse::itemtable{'display'};
  331:     }
  332:     return undef;
  333: }
  334: sub displayfoils {
  335:     my ($target,$max,$randomize)=@_;
  336:     my $result;
  337:     my $question;
  338:     my (@whichfoils)=&whichorder(&getfoilcounts($max),$randomize,
  339: 				 &Apache::response::showallfoils(),
  340: 				 \%Apache::response::foilgroup);
  341:     my $part=$Apache::inputtags::part;
  342:     my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
  343:     my $status=$Apache::inputtags::status[-1];
  344:     my %letter_name_map;
  345:     if (defined(%{ $Apache::response::itemgroup{'letter_name_map'} })) {
  346: 	%letter_name_map=
  347: 	    %{ $Apache::response::itemgroup{'letter_name_map'} };
  348:     }
  349:     my %name_letter_map;
  350:     if (defined(%{ $Apache::response::itemgroup{'name_letter_map'} })) {
  351: 	%name_letter_map=
  352: 	    %{ $Apache::response::itemgroup{'name_letter_map'} };
  353:     }
  354:     if (($solved =~ /^correct/) || ($status eq  'SHOW_ANSWER')) {
  355: 	foreach my $name (@whichfoils) {
  356: 	    my $text=$Apache::response::foilgroup{$name.'.text'};
  357: 	    my $value=$Apache::response::foilgroup{$name.'.value'};
  358: 	    my $letter=$name_letter_map{$value};
  359: 	    $question.='<br />'.$letter.':'.$text;
  360: 	}
  361:     } else {
  362: 	my $i = 0;
  363: 	my $temp=0;
  364: 	my $id=$Apache::inputtags::response[-1];
  365: 	my $part=$Apache::inputtags::part;
  366: 	my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
  367: 	my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
  368: 	foreach my $name (@whichfoils) {
  369: 	    my $lastopt=$lastresponse{$name};
  370: 	    my $last_letter=$name_letter_map{$lastopt};
  371: 	    my $optionlist="<option></option>\n";
  372: 	    my $option;
  373: 	    foreach $option (sort(keys(%letter_name_map))) {
  374: 		if ($option eq $last_letter) {
  375: 		    $optionlist.="<option selected=\"on\">$option</option>\n";
  376: 		} else {
  377: 		    $optionlist.="<option>$option</option>\n";
  378: 		}
  379: 	    }
  380: 	    $optionlist='<select name="HWVAL_'.
  381: 		$Apache::inputtags::response[-1].':'.$temp.'">'.
  382: 		    $optionlist."</select>\n";
  383: 	    my $text=$Apache::response::foilgroup{$name.'.text'};
  384: 	    $question.='<br />'.$optionlist.$text."\n";
  385: 	    $temp++;
  386: 	}
  387:     }
  388:     if ($result=&itemdisplay('top')) {
  389: 	$result.=$question;
  390:     } elsif ($result=&itemdisplay('bottom')) {
  391: 	$result=$question.$result;
  392:     } elsif ($result=&itemdisplay('right')) {
  393: 	$result='<table><tr><td>'.$question.'</td><td>'.$result.
  394: 	    '</td></tr></table>';
  395:     } elsif ($result=&itemdisplay('left')) {
  396: 	$result='<table><tr><td>'.$result.'</td><td>'.$question.
  397: 	    '</td></tr></table>';
  398:     }
  399:     $result.="<br />";
  400:     return $result;
  401: }
  402: 
  403: sub getfoilcounts {
  404:     my ($max)=@_;
  405:     # +1 since instructors will count from 1
  406:     my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
  407:     if (&Apache::response::showallfoils()) { $max=$count; }
  408:     if ($count>$max) { $count=$max } 
  409:     &Apache::lonxml::debug("Count is $count from $max");
  410:     return $count;
  411: }
  412: 
  413: sub whichorder {
  414:     my ($max,$randomize,$showall,$hash)=@_;
  415:     #&Apache::lonxml::debug("man $max randomize $randomize");
  416:     if (!defined(@{ $$hash{'names'} })) { return; }
  417:     my @names = @{ $$hash{'names'} };
  418:     my @whichopt =();
  419:     my (%top,@toplist,%bottom,@bottomlist);
  420:     if (!($showall || ($randomize eq 'no'))) {
  421: 	my $current=0;
  422: 	foreach my $name (@names) {
  423: 	    $current++;
  424: 	    if ($$hash{"$name.location"} eq 'top') {
  425: 		$top{$name}=$current;
  426: 	    } elsif ($$hash{"$name.location"} eq 'bottom') {
  427: 		$bottom{$name}=$current;
  428: 	    }
  429: 	}
  430:     }
  431:     while ((($#whichopt+1) < $max) && ($#names > -1)) {
  432: 	#&Apache::lonxml::debug("Have $#whichopt max is $max");
  433: 	my $aopt;
  434: 	if ($showall || ($randomize eq 'no')) {
  435: 	    $aopt=0;
  436: 	} else {
  437: 	    $aopt=int(&Math::Random::random_uniform() * ($#names+1));
  438: 	}
  439: 	#&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
  440: 	$aopt=splice(@names,$aopt,1);
  441: 	#&Apache::lonxml::debug("Picked $aopt");
  442: 	if ($top{$aopt}) {
  443: 	    $toplist[$top{$aopt}]=$aopt;
  444: 	} elsif ($bottom{$aopt}) {
  445: 	    $bottomlist[$bottom{$aopt}]=$aopt;
  446: 	} else {
  447: 	    push (@whichopt,$aopt);
  448: 	}
  449:     }
  450:     for (my $i=0;$i<=$#toplist;$i++) {
  451: 	if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
  452:     }
  453:     for (my $i=0;$i<=$#bottomlist;$i++) {
  454: 	if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
  455:     }
  456: 
  457:     return @whichopt;
  458: }
  459: 
  460: sub start_conceptgroup {
  461:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  462:     $Apache::matchresponse::conceptgroup=1;
  463:     %Apache::response::conceptgroup=();
  464:     my $result;
  465:     if ($target eq 'edit') {
  466: 	$result.=&Apache::edit::tag_start($target,$token,
  467: 					  "Concept Grouped Foils");
  468: 	$result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
  469: 	    &Apache::edit::end_row().&Apache::edit::start_spanning_row();
  470:     }
  471:     if ($target eq 'modified') {
  472: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  473: 						     $safeeval,'concept');
  474: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
  475:     }
  476:     return $result;
  477: }
  478: 
  479: sub end_conceptgroup {
  480:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  481:     $Apache::matchresponse::conceptgroup=0;
  482:     my $result='';
  483:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ) {
  484: 	#if not there aren't any foils to display and thus no question
  485: 	if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
  486: 	    my @names = @{ $Apache::response::conceptgroup{'names'} };
  487: 	    my $pick=int(&Math::Random::random_uniform() * ($#names+1));
  488: 	    my $name=$names[$pick];
  489: 	    push @{ $Apache::response::foilgroup{'names'} }, $name;
  490: 	    $Apache::response::foilgroup{"$name.value"} =
  491: 		$Apache::response::conceptgroup{"$name.value"};
  492: 	    $Apache::response::foilgroup{"$name.text"} =
  493: 		$Apache::response::conceptgroup{"$name.text"};
  494: 	    $Apache::response::foilgroup{"$name.location"} =
  495: 		$Apache::response::conceptgroup{"$name.location"};
  496: 	    my $concept = &Apache::lonxml::get_param('concept',$parstack,
  497: 						     $safeeval);
  498: 	    $Apache::response::foilgroup{"$name.concept"} = $concept;
  499: 	    &Apache::lonxml::debug("Selecting $name in $concept");
  500: 	    if ($target eq 'web') {
  501: 		my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
  502: 		push(@{ $Apache::hint::match{"$part_id.concepts"} },
  503: 		     $concept);
  504: 		$Apache::hint::match{"$part_id.concept.$concept"}=
  505: 		    $Apache::response::conceptgroup{'names'};
  506: 	    }
  507: 	}
  508:     } elsif ($target eq 'edit') {
  509: 	$result=&Apache::edit::end_table();
  510:     }
  511:     return $result;
  512: }
  513: 
  514: sub insert_conceptgroup {
  515:     my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
  516:     return $result;
  517: }
  518: 
  519: sub start_foil {
  520:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  521:     my $result='';
  522:     if ($target eq 'web' ) {
  523: 	&Apache::lonxml::startredirection;
  524:     } elsif ($target eq 'edit') {
  525: 	$result=&Apache::edit::tag_start($target,$token,"Foil");
  526: 	my $level='-2';
  527: 	if ($$tagstack[-2] eq 'conceptgroup') { $level = '-3'; }
  528: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
  529: 	my @names;
  530: 	if (defined(@{ $Apache::response::itemgroup{'names'} })) {
  531: 	    @names=@{ $Apache::response::itemgroup{'names'} };
  532: 	}
  533: 	$result.= &Apache::edit::select_or_text_arg('Correct Option:','value',['unused',@names],$token,'15');
  534: 	my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
  535: 						 $safeeval,'-3');
  536: 	if ($randomize ne 'no') {
  537: 	    $result.=&Apache::edit::select_arg('Location:','location',
  538: 					     ['random','top','bottom'],$token);
  539: 	}
  540: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
  541:     } elsif ($target eq 'modified') {
  542: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
  543: 						     $safeeval,'value',
  544: 						     'name','location');
  545: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
  546:     }
  547:     return $result;
  548: }
  549: 
  550: sub end_foil {
  551:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
  552:     my $text ='';
  553:     my $result = '';
  554:     if ($target eq 'web') {
  555: 	$text=&Apache::lonxml::endredirection;
  556:     }
  557:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
  558: 	my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
  559: 	if ($value ne 'unused') {
  560: 	    my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
  561: 	    my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
  562: 	    &Apache::lonxml::debug("Got a name of :$name:");
  563: 	    if (!$name) { $name=$Apache::lonxml::curdepth; }
  564: 	    &Apache::lonxml::debug("Using a name of :$name:");
  565: 	    if ( $Apache::matchresponse::conceptgroup
  566: 		 && !&Apache::response::showallfoils() ) {
  567: 		push @{ $Apache::response::conceptgroup{'names'} }, $name;
  568: 		$Apache::response::conceptgroup{"$name.value"} = $value;
  569: 		$Apache::response::conceptgroup{"$name.text"} = $text;
  570: 		$Apache::response::conceptgroup{"$name.location"} = $location;
  571: 	    } else {
  572: 		push @{ $Apache::response::foilgroup{'names'} }, $name;
  573: 		$Apache::response::foilgroup{"$name.value"} = $value;
  574: 		$Apache::response::foilgroup{"$name.text"} = $text;
  575: 		$Apache::response::foilgroup{"$name.location"} = $location;
  576: 	    }
  577: 	}
  578:     }
  579:     if ($target eq 'edit') {
  580: 	$result.= &Apache::edit::tag_end($target,$token,'');
  581:     }
  582:     return $result;
  583: }
  584: 
  585: sub insert_foil {
  586:     return '
  587: <foil name="" value="unused">
  588: <startouttext />
  589: <endouttext />
  590: </foil>';
  591: }
  592: 1;
  593: __END__

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