Annotation of loncom/homework/matchresponse.pm, revision 1.3

1.1       albertel    1: # The LearningOnline Network with CAPA
                      2: # Full matching style response
                      3: #
1.3     ! albertel    4: # $Id: matchresponse.pm,v 1.2 2003/02/20 08:57:51 albertel Exp $
1.1       albertel    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,$safeeval);
1.2       albertel  104:     if ($randomize ne 'no' ) {
1.3     ! albertel  105: 	@names=&whichorder($#names+1,$randomize,0,
        !           106: 			   \%Apache::response::itemgroup)
1.1       albertel  107:     }
                    108:     my %letter_name_map;
                    109:     my %name_letter_map;
                    110:     my @alphabet=('A'..'Z');
                    111:     my $i=0;
                    112:     foreach my $name (@names) {
                    113: 	$letter_name_map{$alphabet[$i]}=$name;
                    114: 	$name_letter_map{$name}=$alphabet[$i];
                    115: 	$i++;
                    116:     }
                    117:     $Apache::response::itemgroup{'letter_name_map'}=\%letter_name_map;
                    118:     $Apache::response::itemgroup{'name_letter_map'}=\%name_letter_map;
                    119:     if ($target eq 'web') {
                    120: 	$result.='<table>';
                    121: 	my $i=0;
                    122: 	foreach my $name (@names) {
                    123: 	    $result.='<tr><td>'.$alphabet[$i].'</td><td>'.
                    124: 		$Apache::response::itemgroup{$name.'.text'}.
                    125: 		    '</td></tr>';
                    126: 	    $i++;
                    127: 	}
                    128: 	$result.='</table>';
                    129:     } elsif ($target eq 'edit') { $result=&Apache::edit::end_table(); }
                    130:     return $result;
                    131: }
                    132: 
                    133: sub start_item {
                    134:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    135:     my $result='';
                    136:     if ($target eq 'web' ) {
                    137: 	&Apache::lonxml::startredirection;
                    138:     } elsif ($target eq 'edit') {
1.3     ! albertel  139: 	my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
        !           140: 						 $safeeval,'-2');
1.1       albertel  141: 	$result=&Apache::edit::tag_start($target,$token,"Item");
                    142: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
1.3     ! albertel  143: 	if ($randomize ne 'no') {
        !           144: 	    $result.=&Apache::edit::select_arg('Location:','location',
        !           145: 					       ['random','top','bottom'],
        !           146: 					       $token);
        !           147: 	}
        !           148: 	$result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1.1       albertel  149:     } elsif ($target eq 'modified') {
                    150: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
1.3     ! albertel  151: 						     $safeeval,'name',
        !           152: 						     'location');
1.1       albertel  153: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    154:     }
                    155:     return $result;
                    156: }
                    157: 
                    158: sub end_item {
                    159:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    160:     my $text ='';
                    161:     my $result = '';
                    162:     if ($target eq 'web') {
                    163: 	$text=&Apache::lonxml::endredirection;
                    164:     }
                    165:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
                    166: 	$target eq 'edit') {
                    167: 	my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
1.3     ! albertel  168: 	my $location=&Apache::lonxml::get_param('location',$parstack,
        !           169: 						$safeeval);
1.1       albertel  170: 	&Apache::lonxml::debug("Got a name of :$name:");
                    171: 	if (!$name) { $name=$Apache::lonxml::curdepth; }
                    172: 	&Apache::lonxml::debug("Using a name of :$name:");
                    173: 	push @{ $Apache::response::itemgroup{'names'} }, $name;
                    174: 	$Apache::response::itemgroup{"$name.text"} = $text;
1.3     ! albertel  175: 	$Apache::response::itemgroup{"$name.location"} = $location;
1.1       albertel  176:     }
                    177:     if ($target eq 'edit') {
                    178: 	$result.= &Apache::edit::tag_end($target,$token,'');
                    179:     }
                    180:     return $result;
                    181: }
                    182: 
                    183: sub insert_item {
                    184:     return '
                    185: <item name="">
                    186: <startouttext />
                    187: <endouttext />
                    188: </item>';
                    189: }
                    190: 
                    191: %Apache::response::foilgroup=();
                    192: sub start_foilgroup {
                    193:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    194:     my $result;
                    195:     %Apache::response::foilgroup=();
                    196:     $Apache::matchresponse::conceptgroup=0;
                    197:     &Apache::response::setrandomnumber();
                    198:     if ($target eq 'edit') {
                    199: 	$result.=&Apache::edit::start_table($token)
                    200: 	    ."<tr><td>Collection Of Foils</td><td>Delete:"
                    201: 	    .&Apache::edit::deletelist($target,$token)
                    202: 	    ."</td><td>&nbsp;".&Apache::edit::end_row()
                    203:             .&Apache::edit::start_spanning_row()."\n";
                    204:     }
                    205:     return $result;
                    206: }
                    207: 
                    208: sub end_foilgroup {
                    209:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    210:     my $result;
                    211:     if ($target eq 'grade' || $target eq 'web' || $target eq 'answer') {
                    212: 	my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
                    213: 	my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
                    214: 						   $safeeval,'-2');
                    215: 	if ($target eq 'web') {
                    216: 	    $result=&displayfoils($target,$max,$randomize);
                    217: 	} elsif ($target eq 'answer' ) {
                    218: 	    $result=&displayanswers($max,$randomize);
                    219: 	} elsif ( $target eq 'grade') {
                    220: 	    &grade_response($max,$randomize);
                    221: 	}
                    222:     } elsif ($target eq 'edit') {
                    223: 	$result=&Apache::edit::end_table();
                    224:     }
                    225:     return $result;
                    226: }
                    227: 
                    228: sub displayanswers {
                    229:     my ($max,$randomize,@opt)=@_;
                    230:     if (!defined(@{ $Apache::response::foilgroup{'names'} })) { return; }
                    231:     my @names = @{ $Apache::response::foilgroup{'names'} };
1.3     ! albertel  232:     my @whichfoils = &whichorder(&getfoilcounts($max),$randomize,
        !           233: 				 &Apache::response::showallfoils(),
        !           234: 				 \%Apache::response::foilgroup);
1.1       albertel  235:     my $result=&Apache::response::answer_header('matchresponse');
                    236:     my %name_letter_map;
                    237:     if (defined(%{ $Apache::response::itemgroup{'name_letter_map'} })) {
                    238: 	%name_letter_map=
                    239: 	    %{ $Apache::response::itemgroup{'name_letter_map'} };
                    240:     }
                    241:     foreach my $name (@whichfoils) {
                    242: 	my $value_name=$Apache::response::foilgroup{$name.'.value'};
                    243: 	my $letter=$name_letter_map{$value_name};
                    244: 	$result.=&Apache::response::answer_part('matchresponse',$letter);
                    245:     }
                    246:     $result.=&Apache::response::answer_footer('matchresponse');
                    247:     return $result;
                    248: }
                    249: 
                    250: 
                    251: sub grade_response {
                    252:     my ($max,$randomize)=@_;
1.3     ! albertel  253:     my (@whichfoils)=&whichorder(&getfoilcounts($max),$randomize,
        !           254: 				 &Apache::response::showallfoils(),
        !           255: 				 \%Apache::response::foilgroup);
1.1       albertel  256:     if (!defined($ENV{'form.submitted'})) { return; }
                    257:     my %responsehash;
                    258:     my %grade;
                    259:     my ($temp,$right,$wrong,$ignored)=(0,0,0,0);
                    260:     my %letter_name_map;
                    261:     if (defined(%{ $Apache::response::itemgroup{'letter_name_map'} })) {
                    262: 	%letter_name_map=
                    263: 	    %{ $Apache::response::itemgroup{'letter_name_map'} };
                    264:     }
                    265:     foreach my $name (@whichfoils) {
                    266: 	my $response = $ENV{'form.HWVAL_'.$Apache::inputtags::response['-1'].":$temp"};
                    267: 	my $responsename = $letter_name_map{$response};
                    268: 	$responsehash{$name}=$responsename;
                    269: 	my $value=$Apache::response::foilgroup{$name.'.value'};
                    270: 	if ( $response =~ /[^\s]/) {
                    271: 	    &Apache::lonxml::debug("submitted a $response for $value<br />\n");
                    272: 	    if ($value eq $responsename) {
                    273: 		$grade{$name}='1'; $right++;
                    274: 	    } else {
                    275: 		$grade{$name}='0'; $wrong++;
                    276: 	    }
                    277: 	} else {
                    278: 	    $ignored++;
                    279: 	}
                    280: 	$temp++;
                    281:     }
                    282:     my $part=$Apache::inputtags::part;
                    283:     my $id = $Apache::inputtags::response['-1'];
                    284:     my $responsestr=&Apache::lonnet::hash2str(%responsehash);
                    285:     my $gradestr   =&Apache::lonnet::hash2str(%grade);
                    286:     my %previous =&Apache::response::check_for_previous($responsestr,
                    287: 							$part,$id);
                    288:     &Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored ");
                    289:     my $ad;
                    290:     if ($wrong==0 && $ignored==0) {
                    291: 	$ad='EXACT_ANS';
                    292:     } elsif ($wrong==0 && $right==0) {
                    293: 	#nothing submitted
                    294:     } else {
                    295: 	if ($ignored==0) {
                    296: 	    $ad='INCORRECT';
                    297: 	} else {
                    298: 	    $ad='MISSING_ANSWER';
                    299: 	}
                    300:     }
                    301:     $Apache::lonhomework::results{"resource.$part.$id.submission"}=
                    302: 	$responsestr;
                    303:     $Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=
                    304: 	$gradestr;
                    305:     $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
                    306:     &Apache::response::handle_previous(\%previous,$ad);
                    307: }
                    308: 
                    309: sub displayfoils {
                    310:     my ($target,$max,$randomize)=@_;
                    311:     my $result;
1.3     ! albertel  312:     my (@whichfoils)=&whichorder(&getfoilcounts($max),$randomize,
        !           313: 				 &Apache::response::showallfoils(),
        !           314: 				 \%Apache::response::foilgroup);
1.1       albertel  315:     my $part=$Apache::inputtags::part;
                    316:     my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
                    317:     my $status=$Apache::inputtags::status[-1];
                    318:     my %letter_name_map;
                    319:     if (defined(%{ $Apache::response::itemgroup{'letter_name_map'} })) {
                    320: 	%letter_name_map=
                    321: 	    %{ $Apache::response::itemgroup{'letter_name_map'} };
                    322:     }
                    323:     my %name_letter_map;
                    324:     if (defined(%{ $Apache::response::itemgroup{'name_letter_map'} })) {
                    325: 	%name_letter_map=
                    326: 	    %{ $Apache::response::itemgroup{'name_letter_map'} };
                    327:     }
                    328:     if (($solved =~ /^correct/) || ($status eq  'SHOW_ANSWER')) {
                    329: 	foreach my $name (@whichfoils) {
                    330: 	    my $text=$Apache::response::foilgroup{$name.'.text'};
                    331: 	    my $value=$Apache::response::foilgroup{$name.'.value'};
                    332: 	    my $letter=$name_letter_map{$value};
                    333: 	    $result.='<br />'.$letter.':'.$text;
                    334: 	}
                    335:     } else {
                    336: 	my $i = 0;
                    337: 	my $temp=0;
                    338: 	my $id=$Apache::inputtags::response[-1];
                    339: 	my $part=$Apache::inputtags::part;
                    340: 	my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
                    341: 	my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
                    342: 	foreach my $name (@whichfoils) {
                    343: 	    my $lastopt=$lastresponse{$name};
                    344: 	    my $last_letter=$name_letter_map{$lastopt};
                    345: 	    my $optionlist="<option></option>\n";
                    346: 	    my $option;
                    347: 	    foreach $option (sort(keys(%letter_name_map))) {
                    348: 		if ($option eq $last_letter) {
                    349: 		    $optionlist.="<option selected=\"on\">$option</option>\n";
                    350: 		} else {
                    351: 		    $optionlist.="<option>$option</option>\n";
                    352: 		}
                    353: 	    }
                    354: 	    $optionlist='<select name="HWVAL_'.
                    355: 		$Apache::inputtags::response[-1].':'.$temp.'">'.
                    356: 		    $optionlist."</select>\n";
                    357: 	    my $text=$Apache::response::foilgroup{$name.'.text'};
                    358: 	    $result.='<br />'.$optionlist.$text."\n";
                    359: 	    $temp++;
                    360: 	}
                    361:     }
                    362:     $result.="<br />";
                    363:     return $result;
                    364: }
                    365: 
                    366: sub getfoilcounts {
                    367:     my ($max)=@_;
                    368:     # +1 since instructors will count from 1
                    369:     my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
                    370:     if (&Apache::response::showallfoils()) { $max=$count; }
                    371:     if ($count>$max) { $count=$max } 
                    372:     &Apache::lonxml::debug("Count is $count from $max");
                    373:     return $count;
                    374: }
                    375: 
1.3     ! albertel  376: sub whichorder {
        !           377:     my ($max,$randomize,$showall,$hash)=@_;
        !           378:     #&Apache::lonxml::debug("man $max randomize $randomize");
        !           379:     if (!defined(@{ $$hash{'names'} })) { return; }
        !           380:     my @names = @{ $$hash{'names'} };
1.1       albertel  381:     my @whichopt =();
                    382:     my (%top,@toplist,%bottom,@bottomlist);
1.3     ! albertel  383:     if (!($showall || ($randomize eq 'no'))) {
1.1       albertel  384: 	my $current=0;
                    385: 	foreach my $name (@names) {
                    386: 	    $current++;
1.3     ! albertel  387: 	    if ($$hash{"$name.location"} eq 'top') {
1.1       albertel  388: 		$top{$name}=$current;
1.3     ! albertel  389: 	    } elsif ($$hash{"$name.location"} eq 'bottom') {
1.1       albertel  390: 		$bottom{$name}=$current;
                    391: 	    }
                    392: 	}
                    393:     }
                    394:     while ((($#whichopt+1) < $max) && ($#names > -1)) {
1.3     ! albertel  395: 	#&Apache::lonxml::debug("Have $#whichopt max is $max");
1.1       albertel  396: 	my $aopt;
1.3     ! albertel  397: 	if ($showall || ($randomize eq 'no')) {
1.1       albertel  398: 	    $aopt=0;
                    399: 	} else {
                    400: 	    $aopt=int(&Math::Random::random_uniform() * ($#names+1));
                    401: 	}
1.3     ! albertel  402: 	#&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
1.1       albertel  403: 	$aopt=splice(@names,$aopt,1);
1.3     ! albertel  404: 	#&Apache::lonxml::debug("Picked $aopt");
1.1       albertel  405: 	if ($top{$aopt}) {
                    406: 	    $toplist[$top{$aopt}]=$aopt;
                    407: 	} elsif ($bottom{$aopt}) {
                    408: 	    $bottomlist[$bottom{$aopt}]=$aopt;
                    409: 	} else {
                    410: 	    push (@whichopt,$aopt);
                    411: 	}
                    412:     }
                    413:     for (my $i=0;$i<=$#toplist;$i++) {
                    414: 	if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
                    415:     }
                    416:     for (my $i=0;$i<=$#bottomlist;$i++) {
                    417: 	if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
                    418:     }
                    419: 
                    420:     return @whichopt;
                    421: }
                    422: 
                    423: sub start_conceptgroup {
                    424:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    425:     $Apache::matchresponse::conceptgroup=1;
                    426:     %Apache::response::conceptgroup=();
                    427:     my $result;
                    428:     if ($target eq 'edit') {
                    429: 	$result.=&Apache::edit::tag_start($target,$token,
                    430: 					  "Concept Grouped Foils");
                    431: 	$result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
                    432: 	    &Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    433:     }
                    434:     if ($target eq 'modified') {
                    435: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    436: 						     $safeeval,'concept');
                    437: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    438:     }
                    439:     return $result;
                    440: }
                    441: 
                    442: sub end_conceptgroup {
                    443:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    444:     $Apache::matchresponse::conceptgroup=0;
                    445:     my $result='';
                    446:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ) {
                    447: 	#if not there aren't any foils to display and thus no question
                    448: 	if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
                    449: 	    my @names = @{ $Apache::response::conceptgroup{'names'} };
                    450: 	    my $pick=int(&Math::Random::random_uniform() * ($#names+1));
                    451: 	    my $name=$names[$pick];
                    452: 	    push @{ $Apache::response::foilgroup{'names'} }, $name;
                    453: 	    $Apache::response::foilgroup{"$name.value"} =
                    454: 		$Apache::response::conceptgroup{"$name.value"};
                    455: 	    $Apache::response::foilgroup{"$name.text"} =
                    456: 		$Apache::response::conceptgroup{"$name.text"};
                    457: 	    $Apache::response::foilgroup{"$name.location"} =
                    458: 		$Apache::response::conceptgroup{"$name.location"};
                    459: 	    my $concept = &Apache::lonxml::get_param('concept',$parstack,
                    460: 						     $safeeval);
                    461: 	    $Apache::response::foilgroup{"$name.concept"} = $concept;
                    462: 	    &Apache::lonxml::debug("Selecting $name in $concept");
                    463: 	    if ($target eq 'web') {
                    464: 		my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
                    465: 		push(@{ $Apache::hint::match{"$part_id.concepts"} },
                    466: 		     $concept);
                    467: 		$Apache::hint::match{"$part_id.concept.$concept"}=
                    468: 		    $Apache::response::conceptgroup{'names'};
                    469: 	    }
                    470: 	}
                    471:     } elsif ($target eq 'edit') {
                    472: 	$result=&Apache::edit::end_table();
                    473:     }
                    474:     return $result;
                    475: }
                    476: 
                    477: sub insert_conceptgroup {
                    478:     my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
                    479:     return $result;
                    480: }
                    481: 
                    482: sub start_foil {
                    483:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    484:     my $result='';
                    485:     if ($target eq 'web' ) {
                    486: 	&Apache::lonxml::startredirection;
                    487:     } elsif ($target eq 'edit') {
                    488: 	$result=&Apache::edit::tag_start($target,$token,"Foil");
                    489: 	my $level='-2';
                    490: 	if ($$tagstack[-2] eq 'conceptgroup') { $level = '-3'; }
                    491: 	$result.=&Apache::edit::text_arg('Name:','name',$token);
                    492: 	my @names;
                    493: 	if (defined(@{ $Apache::response::itemgroup{'names'} })) {
                    494: 	    @names=@{ $Apache::response::itemgroup{'names'} };
                    495: 	}
                    496: 	$result.= &Apache::edit::select_or_text_arg('Correct Option:','value',['unused',@names],$token,'15');
                    497: 	my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
                    498: 						 $safeeval,'-3');
                    499: 	if ($randomize ne 'no') {
                    500: 	    $result.=&Apache::edit::select_arg('Location:','location',
                    501: 					     ['random','top','bottom'],$token);
                    502: 	}
                    503: 	$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
                    504:     } elsif ($target eq 'modified') {
                    505: 	my $constructtag=&Apache::edit::get_new_args($token,$parstack,
                    506: 						     $safeeval,'value',
                    507: 						     'name','location');
                    508: 	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
                    509:     }
                    510:     return $result;
                    511: }
                    512: 
                    513: sub end_foil {
                    514:     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
                    515:     my $text ='';
                    516:     my $result = '';
                    517:     if ($target eq 'web') {
                    518: 	$text=&Apache::lonxml::endredirection;
                    519:     }
                    520:     if ($target eq 'web' || $target eq 'grade' || $target eq 'answer') {
                    521: 	my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
                    522: 	if ($value ne 'unused') {
                    523: 	    my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
                    524: 	    my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
                    525: 	    &Apache::lonxml::debug("Got a name of :$name:");
                    526: 	    if (!$name) { $name=$Apache::lonxml::curdepth; }
                    527: 	    &Apache::lonxml::debug("Using a name of :$name:");
                    528: 	    if ( $Apache::matchresponse::conceptgroup
                    529: 		 && !&Apache::response::showallfoils() ) {
                    530: 		push @{ $Apache::response::conceptgroup{'names'} }, $name;
                    531: 		$Apache::response::conceptgroup{"$name.value"} = $value;
                    532: 		$Apache::response::conceptgroup{"$name.text"} = $text;
                    533: 		$Apache::response::conceptgroup{"$name.location"} = $location;
                    534: 	    } else {
                    535: 		push @{ $Apache::response::foilgroup{'names'} }, $name;
                    536: 		$Apache::response::foilgroup{"$name.value"} = $value;
                    537: 		$Apache::response::foilgroup{"$name.text"} = $text;
                    538: 		$Apache::response::foilgroup{"$name.location"} = $location;
                    539: 	    }
                    540: 	}
                    541:     }
                    542:     if ($target eq 'edit') {
                    543: 	$result.= &Apache::edit::tag_end($target,$token,'');
                    544:     }
                    545:     return $result;
                    546: }
                    547: 
                    548: sub insert_foil {
                    549:     return '
                    550: <foil name="" value="unused">
                    551: <startouttext />
                    552: <endouttext />
                    553: </foil>';
                    554: }
                    555: 1;
                    556: __END__

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