Annotation of loncom/homework/matchresponse.pm, revision 1.1

1.1     ! albertel    1: # The LearningOnline Network with CAPA
        !             2: # Full matching style response
        !             3: #
        !             4: # $Id: matchresponse.pm,v 1.63 2003/01/07 22:13:07 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 $result;
        !            87:     %Apache::response::itemgroup=();
        !            88:     if ($target eq 'edit') {
        !            89: 	$result=&Apache::edit::tag_start($target,$token);
        !            90: 	$result.=&Apache::edit::select_arg('Randomize Order:','randomize',
        !            91: 					   ['yes','no'],$token);
        !            92: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
        !            93:     }
        !            94:     return $result;
        !            95: }
        !            96: 
        !            97: sub end_itemgroup {
        !            98:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !            99:     my $result;
        !           100: 
        !           101:     if (!defined(@{ $Apache::response::itemgroup{'names'} })) { return; }
        !           102:     my @names=@{ $Apache::response::itemgroup{'names'} };
        !           103:     my $randomize =&Apache::lonxml::get_param('randomize',$parstack,$safeeval);
        !           104:     if ($randomize != 'no' ) {
        !           105: 	@names=&Math::Random::random_permutation(@names);
        !           106:     }
        !           107:     my %letter_name_map;
        !           108:     my %name_letter_map;
        !           109:     my @alphabet=('A'..'Z');
        !           110:     my $i=0;
        !           111:     foreach my $name (@names) {
        !           112: 	$letter_name_map{$alphabet[$i]}=$name;
        !           113: 	$name_letter_map{$name}=$alphabet[$i];
        !           114: 	$i++;
        !           115:     }
        !           116:     $Apache::response::itemgroup{'letter_name_map'}=\%letter_name_map;
        !           117:     $Apache::response::itemgroup{'name_letter_map'}=\%name_letter_map;
        !           118:     if ($target eq 'web') {
        !           119: 	$result.='<table>';
        !           120: 	my $i=0;
        !           121: 	foreach my $name (@names) {
        !           122: 	    $result.='<tr><td>'.$alphabet[$i].'</td><td>'.
        !           123: 		$Apache::response::itemgroup{$name.'.text'}.
        !           124: 		    '</td></tr>';
        !           125: 	    $i++;
        !           126: 	}
        !           127: 	$result.='</table>';
        !           128:     } elsif ($target eq 'edit') { $result=&Apache::edit::end_table(); }
        !           129:     return $result;
        !           130: }
        !           131: 
        !           132: sub start_item {
        !           133:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !           134:     my $result='';
        !           135:     if ($target eq 'web' ) {
        !           136: 	&Apache::lonxml::startredirection;
        !           137:     } elsif ($target eq 'edit') {
        !           138: 	$result=&Apache::edit::tag_start($target,$token,"Item");
        !           139: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
        !           140: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
        !           141:     } elsif ($target eq 'modified') {
        !           142: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        !           143: 						     $safeeval,'name');
        !           144: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
        !           145:     }
        !           146:     return $result;
        !           147: }
        !           148: 
        !           149: sub end_item {
        !           150:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !           151:     my $text ='';
        !           152:     my $result = '';
        !           153:     if ($target eq 'web') {
        !           154: 	$text=&Apache::lonxml::endredirection;
        !           155:     }
        !           156:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
        !           157: 	$target eq 'edit') {
        !           158: 	my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
        !           159: 	&Apache::lonxml::debug("Got a name of :$name:");
        !           160: 	if (!$name) { $name=$Apache::lonxml::curdepth; }
        !           161: 	&Apache::lonxml::debug("Using a name of :$name:");
        !           162: 	push @{ $Apache::response::itemgroup{'names'} }, $name;
        !           163: 	$Apache::response::itemgroup{"$name.text"} = $text;
        !           164:     }
        !           165:     if ($target eq 'edit') {
        !           166: 	$result.= &Apache::edit::tag_end($target,$token,'');
        !           167:     }
        !           168:     return $result;
        !           169: }
        !           170: 
        !           171: sub insert_item {
        !           172:     return '
        !           173: <item name="">
        !           174: <startouttext />
        !           175: <endouttext />
        !           176: </item>';
        !           177: }
        !           178: 
        !           179: %Apache::response::foilgroup=();
        !           180: sub start_foilgroup {
        !           181:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !           182:     my $result;
        !           183:     %Apache::response::foilgroup=();
        !           184:     $Apache::matchresponse::conceptgroup=0;
        !           185:     &Apache::response::setrandomnumber();
        !           186:     if ($target eq 'edit') {
        !           187: 	$result.=&Apache::edit::start_table($token)
        !           188: 	    ."<tr><td>Collection Of Foils</td><td>Delete:"
        !           189: 	    .&Apache::edit::deletelist($target,$token)
        !           190: 	    ."</td><td>&nbsp;".&Apache::edit::end_row()
        !           191:             .&Apache::edit::start_spanning_row()."\n";
        !           192:     }
        !           193:     return $result;
        !           194: }
        !           195: 
        !           196: sub end_foilgroup {
        !           197:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !           198:     my $result;
        !           199:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer') {
        !           200: 	my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
        !           201: 	my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
        !           202: 						   $safeeval,'-2');
        !           203: 	if ($target eq 'web') {
        !           204: 	    $result=&displayfoils($target,$max,$randomize);
        !           205: 	} elsif ($target eq 'answer' ) {
        !           206: 	    $result=&displayanswers($max,$randomize);
        !           207: 	} elsif ( $target eq 'grade') {
        !           208: 	    &grade_response($max,$randomize);
        !           209: 	}
        !           210:     } elsif ($target eq 'edit') {
        !           211: 	$result=&Apache::edit::end_table();
        !           212:     }
        !           213:     return $result;
        !           214: }
        !           215: 
        !           216: sub displayanswers {
        !           217:     my ($max,$randomize,@opt)=@_;
        !           218:     if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; }
        !           219:     my @names = @{ $Apache::response::foilgroup{'names'} };
        !           220:     my @whichfoils = &whichfoils($max,$randomize);
        !           221:     my $result=&Apache::response::answer_header('matchresponse');
        !           222:     my %name_letter_map;
        !           223:     if (defined(%{ $Apache::response::itemgroup{'name_letter_map'} })) {
        !           224: 	%name_letter_map=
        !           225: 	    %{ $Apache::response::itemgroup{'name_letter_map'} };
        !           226:     }
        !           227:     foreach my $name (@whichfoils) {
        !           228: 	my $value_name=$Apache::response::foilgroup{$name.'.value'};
        !           229: 	my $letter=$name_letter_map{$value_name};
        !           230: 	$result.=&Apache::response::answer_part('matchresponse',$letter);
        !           231:     }
        !           232:     $result.=&Apache::response::answer_footer('matchresponse');
        !           233:     return $result;
        !           234: }
        !           235: 
        !           236: 
        !           237: sub grade_response {
        !           238:     my ($max,$randomize)=@_;
        !           239:     my (@whichfoils)=&whichfoils($max,$randomize);
        !           240:     if (!defined($ENV{'form.submitted'})) { return; }
        !           241:     my %responsehash;
        !           242:     my %grade;
        !           243:     my ($temp,$right,$wrong,$ignored)=(0,0,0,0);
        !           244:     my %letter_name_map;
        !           245:     if (defined(%{ $Apache::response::itemgroup{'letter_name_map'} })) {
        !           246: 	%letter_name_map=
        !           247: 	    %{ $Apache::response::itemgroup{'letter_name_map'} };
        !           248:     }
        !           249:     foreach my $name (@whichfoils) {
        !           250: 	my $response = $ENV{'form.HWVAL_'.$Apache::inputtags::response['-1'].":$temp"};
        !           251: 	my $responsename = $letter_name_map{$response};
        !           252: 	$responsehash{$name}=$responsename;
        !           253: 	my $value=$Apache::response::foilgroup{$name.'.value'};
        !           254: 	if ( $response =~ /[^\s]/) {
        !           255: 	    &Apache::lonxml::debug("submitted a $response for $value<br />\n");
        !           256: 	    if ($value eq $responsename) {
        !           257: 		$grade{$name}='1'; $right++;
        !           258: 	    } else {
        !           259: 		$grade{$name}='0'; $wrong++;
        !           260: 	    }
        !           261: 	} else {
        !           262: 	    $ignored++;
        !           263: 	}
        !           264: 	$temp++;
        !           265:     }
        !           266:     my $part=$Apache::inputtags::part;
        !           267:     my $id = $Apache::inputtags::response['-1'];
        !           268:     my $responsestr=&Apache::lonnet::hash2str(%responsehash);
        !           269:     my $gradestr   =&Apache::lonnet::hash2str(%grade);
        !           270:     my %previous =&Apache::response::check_for_previous($responsestr,
        !           271: 							$part,$id);
        !           272:     &Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored ");
        !           273:     my $ad;
        !           274:     if ($wrong==0 && $ignored==0) {
        !           275: 	$ad='EXACT_ANS';
        !           276:     } elsif ($wrong==0 && $right==0) {
        !           277: 	#nothing submitted
        !           278:     } else {
        !           279: 	if ($ignored==0) {
        !           280: 	    $ad='INCORRECT';
        !           281: 	} else {
        !           282: 	    $ad='MISSING_ANSWER';
        !           283: 	}
        !           284:     }
        !           285:     $Apache::lonhomework::results{"resource.$part.$id.submission"}=
        !           286: 	$responsestr;
        !           287:     $Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=
        !           288: 	$gradestr;
        !           289:     $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
        !           290:     &Apache::response::handle_previous(\%previous,$ad);
        !           291: }
        !           292: 
        !           293: sub displayfoils {
        !           294:     my ($target,$max,$randomize)=@_;
        !           295:     my $result;
        !           296:     my (@whichfoils)=&whichfoils($max,$randomize);
        !           297:     my $part=$Apache::inputtags::part;
        !           298:     my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
        !           299:     my $status=$Apache::inputtags::status[-1];
        !           300:     my %letter_name_map;
        !           301:     if (defined(%{ $Apache::response::itemgroup{'letter_name_map'} })) {
        !           302: 	%letter_name_map=
        !           303: 	    %{ $Apache::response::itemgroup{'letter_name_map'} };
        !           304:     }
        !           305:     my %name_letter_map;
        !           306:     if (defined(%{ $Apache::response::itemgroup{'name_letter_map'} })) {
        !           307: 	%name_letter_map=
        !           308: 	    %{ $Apache::response::itemgroup{'name_letter_map'} };
        !           309:     }
        !           310:     if (($solved =~ /^correct/) || ($status eq  'SHOW_ANSWER')) {
        !           311: 	foreach my $name (@whichfoils) {
        !           312: 	    my $text=$Apache::response::foilgroup{$name.'.text'};
        !           313: 	    my $value=$Apache::response::foilgroup{$name.'.value'};
        !           314: 	    my $letter=$name_letter_map{$value};
        !           315: 	    $result.='<br />'.$letter.':'.$text;
        !           316: 	}
        !           317:     } else {
        !           318: 	my $i = 0;
        !           319: 	my $temp=0;
        !           320: 	my $id=$Apache::inputtags::response[-1];
        !           321: 	my $part=$Apache::inputtags::part;
        !           322: 	my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
        !           323: 	my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
        !           324: 	foreach my $name (@whichfoils) {
        !           325: 	    my $lastopt=$lastresponse{$name};
        !           326: 	    my $last_letter=$name_letter_map{$lastopt};
        !           327: 	    my $optionlist="<option></option>\n";
        !           328: 	    my $option;
        !           329: 	    foreach $option (sort(keys(%letter_name_map))) {
        !           330: 		if ($option eq $last_letter) {
        !           331: 		    $optionlist.="<option selected=\"on\">$option</option>\n";
        !           332: 		} else {
        !           333: 		    $optionlist.="<option>$option</option>\n";
        !           334: 		}
        !           335: 	    }
        !           336: 	    $optionlist='<select name="HWVAL_'.
        !           337: 		$Apache::inputtags::response[-1].':'.$temp.'">'.
        !           338: 		    $optionlist."</select>\n";
        !           339: 	    my $text=$Apache::response::foilgroup{$name.'.text'};
        !           340: 	    $result.='<br />'.$optionlist.$text."\n";
        !           341: 	    $temp++;
        !           342: 	}
        !           343:     }
        !           344:     $result.="<br />";
        !           345:     return $result;
        !           346: }
        !           347: 
        !           348: sub getfoilcounts {
        !           349:     my ($max)=@_;
        !           350:     # +1 since instructors will count from 1
        !           351:     my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
        !           352:     if (&Apache::response::showallfoils()) { $max=$count; }
        !           353:     if ($count>$max) { $count=$max } 
        !           354:     &Apache::lonxml::debug("Count is $count from $max");
        !           355:     return $count;
        !           356: }
        !           357: 
        !           358: sub whichfoils {
        !           359:     my ($max,$randomize)=@_;
        !           360:     $max = &getfoilcounts($max);
        !           361:  #   &Apache::lonxml::debug("man $max randomize $randomize");
        !           362:     if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; }
        !           363:     my @names = @{ $Apache::response::foilgroup{'names'} };
        !           364:     my @whichopt =();
        !           365:     my (%top,@toplist,%bottom,@bottomlist);
        !           366:     if (!(&Apache::response::showallfoils() || ($randomize eq 'no'))) {
        !           367: 	my $current=0;
        !           368: 	foreach my $name (@names) {
        !           369: 	    $current++;
        !           370: 	    if ($Apache::response::foilgroup{"$name.location"} eq 'top') {
        !           371: 		$top{$name}=$current;
        !           372: 	    } elsif ($Apache::response::foilgroup{"$name.location"} eq
        !           373: 		     'bottom') {
        !           374: 		$bottom{$name}=$current;
        !           375: 	    }
        !           376: 	}
        !           377:     }
        !           378:     while ((($#whichopt+1) < $max) && ($#names > -1)) {
        !           379: #	&Apache::lonxml::debug("Have $#whichopt max is $max");
        !           380: 	my $aopt;
        !           381: 	if (&Apache::response::showallfoils() || ($randomize eq 'no')) {
        !           382: 	    $aopt=0;
        !           383: 	} else {
        !           384: 	    $aopt=int(&Math::Random::random_uniform() * ($#names+1));
        !           385: 	}
        !           386: #	&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
        !           387: 	$aopt=splice(@names,$aopt,1);
        !           388: #	&Apache::lonxml::debug("Picked $aopt");
        !           389: 	if ($top{$aopt}) {
        !           390: 	    $toplist[$top{$aopt}]=$aopt;
        !           391: 	} elsif ($bottom{$aopt}) {
        !           392: 	    $bottomlist[$bottom{$aopt}]=$aopt;
        !           393: 	} else {
        !           394: 	    push (@whichopt,$aopt);
        !           395: 	}
        !           396:     }
        !           397:     for (my $i=0;$i<=$#toplist;$i++) {
        !           398: 	if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
        !           399:     }
        !           400:     for (my $i=0;$i<=$#bottomlist;$i++) {
        !           401: 	if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
        !           402:     }
        !           403: 
        !           404:     return @whichopt;
        !           405: }
        !           406: 
        !           407: sub start_conceptgroup {
        !           408:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !           409:     $Apache::matchresponse::conceptgroup=1;
        !           410:     %Apache::response::conceptgroup=();
        !           411:     my $result;
        !           412:     if ($target eq 'edit') {
        !           413: 	$result.=&Apache::edit::tag_start($target,$token,
        !           414: 					  "Concept Grouped Foils");
        !           415: 	$result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
        !           416: 	    &Apache::edit::end_row().&Apache::edit::start_spanning_row();
        !           417:     }
        !           418:     if ($target eq 'modified') {
        !           419: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        !           420: 						     $safeeval,'concept');
        !           421: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
        !           422:     }
        !           423:     return $result;
        !           424: }
        !           425: 
        !           426: sub end_conceptgroup {
        !           427:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !           428:     $Apache::matchresponse::conceptgroup=0;
        !           429:     my $result='';
        !           430:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ) {
        !           431: 	#if not there aren't any foils to display and thus no question
        !           432: 	if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
        !           433: 	    my @names = @{ $Apache::response::conceptgroup{'names'} };
        !           434: 	    my $pick=int(&Math::Random::random_uniform() * ($#names+1));
        !           435: 	    my $name=$names[$pick];
        !           436: 	    push @{ $Apache::response::foilgroup{'names'} }, $name;
        !           437: 	    $Apache::response::foilgroup{"$name.value"} =
        !           438: 		$Apache::response::conceptgroup{"$name.value"};
        !           439: 	    $Apache::response::foilgroup{"$name.text"} =
        !           440: 		$Apache::response::conceptgroup{"$name.text"};
        !           441: 	    $Apache::response::foilgroup{"$name.location"} =
        !           442: 		$Apache::response::conceptgroup{"$name.location"};
        !           443: 	    my $concept = &Apache::lonxml::get_param('concept',$parstack,
        !           444: 						     $safeeval);
        !           445: 	    $Apache::response::foilgroup{"$name.concept"} = $concept;
        !           446: 	    &Apache::lonxml::debug("Selecting $name in $concept");
        !           447: 	    if ($target eq 'web') {
        !           448: 		my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
        !           449: 		push(@{ $Apache::hint::match{"$part_id.concepts"} },
        !           450: 		     $concept);
        !           451: 		$Apache::hint::match{"$part_id.concept.$concept"}=
        !           452: 		    $Apache::response::conceptgroup{'names'};
        !           453: 	    }
        !           454: 	}
        !           455:     } elsif ($target eq 'edit') {
        !           456: 	$result=&Apache::edit::end_table();
        !           457:     }
        !           458:     return $result;
        !           459: }
        !           460: 
        !           461: sub insert_conceptgroup {
        !           462:     my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
        !           463:     return $result;
        !           464: }
        !           465: 
        !           466: sub start_foil {
        !           467:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !           468:     my $result='';
        !           469:     if ($target eq 'web' ) {
        !           470: 	&Apache::lonxml::startredirection;
        !           471:     } elsif ($target eq 'edit') {
        !           472: 	$result=&Apache::edit::tag_start($target,$token,"Foil");
        !           473: 	my $level='-2';
        !           474: 	if ($$tagstack[-2] eq 'conceptgroup') { $level = '-3'; }
        !           475: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
        !           476: 	my @names;
        !           477: 	if (defined(@{ $Apache::response::itemgroup{'names'} })) {
        !           478: 	    @names=@{ $Apache::response::itemgroup{'names'} };
        !           479: 	}
        !           480: 	$result.= &Apache::edit::select_or_text_arg('Correct Option:','value',['unused',@names],$token,'15');
        !           481: 	my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
        !           482: 						 $safeeval,'-3');
        !           483: 	if ($randomize ne 'no') {
        !           484: 	    $result.=&Apache::edit::select_arg('Location:','location',
        !           485: 					     ['random','top','bottom'],$token);
        !           486: 	}
        !           487: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
        !           488:     } elsif ($target eq 'modified') {
        !           489: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
        !           490: 						     $safeeval,'value',
        !           491: 						     'name','location');
        !           492: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
        !           493:     }
        !           494:     return $result;
        !           495: }
        !           496: 
        !           497: sub end_foil {
        !           498:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
        !           499:     my $text ='';
        !           500:     my $result = '';
        !           501:     if ($target eq 'web') {
        !           502: 	$text=&Apache::lonxml::endredirection;
        !           503:     }
        !           504:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
        !           505: 	my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
        !           506: 	if ($value ne 'unused') {
        !           507: 	    my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
        !           508: 	    my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
        !           509: 	    &Apache::lonxml::debug("Got a name of :$name:");
        !           510: 	    if (!$name) { $name=$Apache::lonxml::curdepth; }
        !           511: 	    &Apache::lonxml::debug("Using a name of :$name:");
        !           512: 	    if ( $Apache::matchresponse::conceptgroup
        !           513: 		 && !&Apache::response::showallfoils() ) {
        !           514: 		push @{ $Apache::response::conceptgroup{'names'} }, $name;
        !           515: 		$Apache::response::conceptgroup{"$name.value"} = $value;
        !           516: 		$Apache::response::conceptgroup{"$name.text"} = $text;
        !           517: 		$Apache::response::conceptgroup{"$name.location"} = $location;
        !           518: 	    } else {
        !           519: 		push @{ $Apache::response::foilgroup{'names'} }, $name;
        !           520: 		$Apache::response::foilgroup{"$name.value"} = $value;
        !           521: 		$Apache::response::foilgroup{"$name.text"} = $text;
        !           522: 		$Apache::response::foilgroup{"$name.location"} = $location;
        !           523: 	    }
        !           524: 	}
        !           525:     }
        !           526:     if ($target eq 'edit') {
        !           527: 	$result.= &Apache::edit::tag_end($target,$token,'');
        !           528:     }
        !           529:     return $result;
        !           530: }
        !           531: 
        !           532: sub insert_foil {
        !           533:     return '
        !           534: <foil name="" value="unused">
        !           535: <startouttext />
        !           536: <endouttext />
        !           537: </foil>';
        !           538: }
        !           539: 1;
        !           540: __END__

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