1: # LearningOnline Network with CAPA
2: # option list style responses
3: #
4: # $Id: optionresponse.pm,v 1.143 2007/04/17 23:25:09 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::optionresponse;
29: use strict;
30: use Apache::response();
31: use Apache::lonlocal;
32: use Apache::lonnet;
33:
34: BEGIN {
35: &Apache::lonxml::register('Apache::optionresponse',('optionresponse'));
36: }
37:
38: sub start_optionresponse {
39: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
40: my $result='';
41: #when in a option response use these
42: &Apache::lonxml::register('Apache::optionresponse',('foilgroup','foil','conceptgroup','drawoptionlist'));
43: push (@Apache::lonxml::namespace,'optionresponse');
44: my $id = &Apache::response::start_response($parstack,$safeeval);
45: %Apache::hint::option=();
46: undef(%Apache::response::foilnames);
47: if ($target eq 'edit') {
48: $result.=&Apache::edit::start_table($token).
49: "<tr><td>Multiple Option Response Question ".
50: &Apache::loncommon::help_open_topic('Option_Response_Problems')."</td><td>Delete:".
51: &Apache::edit::deletelist($target,$token)
52: ."</td><td> ".
53: &Apache::edit::end_row().
54: &Apache::edit::start_spanning_row().
55: "\n";
56: $result.=&Apache::edit::text_arg('Max Number Of Shown Foils:','max',
57: $token,'4').
58: &Apache::edit::select_arg('Randomize Foil Order','randomize',
59: ['yes','no'],$token).
60: &Apache::edit::select_arg(&mt('Display of options when printed'),'TeXlayout',
61: [['horizontal',&mt('Normal list')],
62: ['vertical',&mt('Listed in a vertical column')]],$token).
63: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
64: } elsif ($target eq 'modified') {
65: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
66: $safeeval,'max','randomize',
67: 'TeXlayout');
68: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
69: } elsif ($target eq 'meta') {
70: $result=&Apache::response::meta_package_write('optionresponse');
71: } elsif ($target eq 'analyze') {
72: my $part_id="$Apache::inputtags::part.$id";
73: push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
74: }
75: return $result;
76: }
77:
78: sub end_optionresponse {
79: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
80: &Apache::response::end_response;
81: pop @Apache::lonxml::namespace;
82: &Apache::lonxml::deregister('Apache::optionresponse',('foilgroup','foil','conceptgroup','drawoptionlist'));
83: my $result;
84: if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
85: undef(%Apache::response::foilnames);
86: return $result;
87: }
88:
89: %Apache::response::foilgroup=();
90: sub start_foilgroup {
91: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
92:
93: my $result='';
94: %Apache::response::foilgroup=();
95: $Apache::optionresponse::conceptgroup=0;
96: &Apache::response::pushrandomnumber();
97: if ($target eq 'edit') {
98: my $optionlist="<option></option>\n";
99: my $option;
100: my @opt;
101: eval '@opt ='. &Apache::lonxml::get_param('options',$parstack,$safeeval);
102: my $count=1;
103: foreach $option (@opt) {
104: $optionlist.="<option value=\"$count\">$option</option>\n";
105: $count++;
106: }
107: my $insertlist=&Apache::edit::insertlist($target,$token);
108: $result.=&Apache::edit::start_table($token);
109: $result.= (<<ENDTABLE);
110: <tr><td>Select Options</td>
111: <td>
112: Add new Option: <input type="text" name="$Apache::lonxml::curdepth.options" />
113: </td>
114: <td>Delete an Option:
115: <select name="$Apache::lonxml::curdepth.deleteopt">$optionlist</select>
116: ENDTABLE
117: $result.= &Apache::edit::checked_arg('Print options:','texoptions',
118: [ ['nochoice','Don\'t show option list'] ]
119: ,$token);
120: $result.= &Apache::edit::end_row();
121: $result.= &Apache::edit::start_spanning_row();
122: $result.= $insertlist.'<br />';
123: }
124: if ($target eq 'modified') {
125: my @options;
126: my $optchanged=0;
127: eval '@options ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
128: if ($env{"form.$Apache::lonxml::curdepth.deleteopt"}) {
129: my $delopt=$env{"form.$Apache::lonxml::curdepth.deleteopt"};
130: &Apache::lonxml::debug("Deleting :$delopt:");
131: splice(@options,$delopt-1,1);
132: $optchanged=1;
133: }
134: if ($env{"form.$Apache::lonxml::curdepth.options"}) {
135: my $newopt = $env{"form.$Apache::lonxml::curdepth.options"};
136: if ($options[0]) {
137: push(@options,$newopt);
138: } else {
139: $options[0]=$newopt;
140: }
141: $optchanged=1;
142: }
143: my $rebuildtag = &Apache::edit::get_new_args($token,$parstack,$safeeval,
144: ('texoptions'));
145: if ($optchanged || $rebuildtag ) {
146: $result = "<foilgroup options=\"(";
147: foreach my $option (@options) {
148: $option=~s/\'/\\\'/g;
149: &Apache::lonxml::debug("adding option :$option:");
150: $result .="'".$option."',";
151: }
152: chop $result;
153: $result.=')" ';
154: $result .= 'texoptions="'.$token->[2]{'texoptions'}.'" ';
155: $result .= '>';
156: } # else nothing changed so just use the default mechanism
157: }
158: if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
159: $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
160: \begin{enumerate} ';
161: }
162: return $result;
163: }
164:
165: sub end_foilgroup {
166: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
167:
168: my $result;
169: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
170: $target eq 'tex' || $target eq 'analyze') {
171: my $tex_option_switch=&Apache::lonxml::get_param('texoptions',$parstack,$safeeval);
172: my $name;
173: my @opt;
174: eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
175: &Apache::lonxml::debug("options:".join(':',@opt));
176:
177: my $TeXlayout=&Apache::lonxml::get_param('TeXlayout',$parstack,$safeeval,
178: -2,0);
179: if ($target eq 'tex' && $tex_option_switch eq 'nochoice') {@opt=();}
180: &Apache::lonxml::debug("Options are $#opt");
181: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
182: my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
183: $safeeval,'-2');
184: if ($target eq 'web' || $target eq 'tex') {
185: $result.=&displayfoils($target,$max,$randomize,$TeXlayout,@opt);
186: $Apache::lonxml::post_evaluate=0;
187: } elsif ( $target eq 'answer') {
188: $result.=&displayanswers($max,$randomize,@opt);
189:
190: } elsif ( $target eq 'analyze') {
191: my @shown = &whichfoils($max,$randomize);
192: &Apache::response::analyze_store_foilgroup(\@shown,
193: ['text','value','location']);
194: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
195: push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
196: } elsif ( $target eq 'grade') {
197: if ( &Apache::response::submitted()) {
198: my @whichopt = &whichfoils($max,$randomize);
199: my $temp=1;my $name;
200: my %responsehash;
201: my %grade;
202: my $right=0;
203: my $wrong=0;
204: my $ignored=0;
205: foreach $name (@whichopt) {
206: my $response=&Apache::response::getresponse($temp);
207: if ($env{'form.submitted'} eq 'scantron' && $response=~/\S/) {
208: $response = $opt[$response];
209: }
210: if ( $response =~ /[^\s]/) {
211: $responsehash{$name}=$response;
212: my $value=$Apache::response::foilgroup{$name.'.value'};
213: &Apache::lonxml::debug("submitted a $response for $value<br />\n");
214: if ($value eq $response) {
215: $grade{$name}='1'; $right++;
216: } else {
217: $grade{$name}='0'; $wrong++;
218: }
219: } else {
220: $ignored++;
221: }
222: $temp++;
223: }
224: my $part=$Apache::inputtags::part;
225: my $id = $Apache::inputtags::response['-1'];
226: my $responsestr=&Apache::lonnet::hash2str(%responsehash);
227: my $gradestr =&Apache::lonnet::hash2str(%grade);
228: my %previous=&Apache::response::check_for_previous($responsestr,
229: $part,$id);
230: &Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored");
231: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
232: $responsestr;
233: $Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
234:
235: if ($Apache::lonhomework::type eq 'survey') {
236: if ($ignored == 0) {
237: my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED';
238: &Apache::response::handle_previous(\%previous,$ad);
239: } elsif ($wrong==0 && $right==0) {
240: } else {
241: my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='MISSING_ANSWER';
242: &Apache::response::handle_previous(\%previous,$ad);
243: }
244: } elsif (!$Apache::lonhomework::scantronmode) {
245: my $ad;
246: if ($wrong==0 && $ignored==0) {
247: $ad='EXACT_ANS';
248: } elsif ($wrong==0 && $right==0) {
249: #nothing submitted
250: } else {
251: if ($ignored==0) {
252: $ad='INCORRECT';
253: } else {
254: $ad='MISSING_ANSWER';
255: }
256: }
257: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
258: &Apache::response::handle_previous(\%previous,$ad);
259: } else {
260: my $ad;
261: if ($wrong==0 && $right==0) {
262: #nothing submitted only assign a score if we
263: #need to override a previous grade
264: if (defined($Apache::lonhomework::history{"resource.$part.$id.awarddetail"})) {
265: $ad='ASSIGNED_SCORE';
266: }
267: } else {
268: $ad='ASSIGNED_SCORE';
269: }
270: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
271: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=
272: $right/(scalar(@whichopt));
273: $Apache::lonhomework::results{"resource.$part.$id.numfoils"}=
274: scalar(@whichopt);
275: }
276: }
277: }
278: &Apache::lonxml::increment_counter(&getfoilcounts($max));
279: } elsif ($target eq 'edit') {
280: $result.=&Apache::edit::end_table();
281: }
282: if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
283: $result .= '\end{enumerate}';
284: }
285: &Apache::response::poprandomnumber();
286: return $result;
287: }
288:
289: sub getfoilcounts {
290: my ($max)=@_;
291: # +1 since instructors will count from 1
292: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
293: if (&Apache::response::showallfoils()) { $max=$count; }
294: if ($count>$max) { $count=$max }
295: &Apache::lonxml::debug("Count is $count from $max");
296: return $count;
297: }
298:
299: sub whichfoils {
300: my ($max,$randomize)=@_;
301: return &Apache::response::whichorder($max,$randomize,
302: &Apache::response::showallfoils(),
303: \%Apache::response::foilgroup);
304: }
305:
306: sub displayanswers {
307: my ($max,$randomize,@opt)=@_;
308: if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
309: my @names = @{ $Apache::response::foilgroup{'names'} };
310: my @whichopt = &whichfoils($max,$randomize);
311: my $result;
312: if ($Apache::lonhomework::type eq 'exam') {
313: my $i = 0;
314: my %opt = map { ($_,$i++) } @opt;
315:
316: $i = 0;
317: my @alphabet = ('A'..'Z');
318: foreach my $name (@whichopt) {
319: $result.=&Apache::response::answer_header('optionresponse',$i++);
320: $result.=&Apache::response::answer_part('optionresponse',
321: $alphabet[$opt{$Apache::response::foilgroup{$name.'.value'}}]);
322: $result.=&Apache::response::answer_part('optionresponse',
323: $Apache::response::foilgroup{$name.'.value'});
324: $result.=&Apache::response::answer_footer('optionresponse');
325: }
326: } else {
327: $result=&Apache::response::answer_header('optionresponse');
328: foreach my $name (@whichopt) {
329: $result.=&Apache::response::answer_part('optionresponse',
330: $Apache::response::foilgroup{$name.'.value'});
331: }
332: $result.=&Apache::response::answer_footer('optionresponse');
333: }
334: return $result;
335: }
336:
337: sub check_for_invalid {
338: my ($names,$options) = @_;
339: my %bad_names;
340: foreach my $name (@{ $names }) {
341: my $value=$Apache::response::foilgroup{$name.'.value'};
342: my $found=0;
343: foreach my $option (@{ $options }) {
344: if ($value eq $option) { $found=1; }
345: }
346: if (!$found) { $bad_names{$name}=$value; }
347: }
348: if (%bad_names) {
349: my $error=&mt('The question can not be gotten correct, '.
350: 'the following foils in the <optionresponse> '.
351: 'have invalid correct options').' <br /><tt>'.
352: join('<br />',(map { $_=&mt("[_1] with value [_2]",$_,$bad_names{$_}) } (keys(%bad_names)))).
353: "</tt>";
354: &Apache::lonxml::error($error);
355: }
356: }
357:
358: sub displayfoils {
359: my ($target,$max,$randomize,$TeXlayout,@opt)=@_;
360: if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
361: my @names = @{ $Apache::response::foilgroup{'names'} };
362: my @truelist;
363: my @falselist;
364: my $result;
365: my $name;
366: my $displayoptionintex=1;
367: my @alphabet = ('A'..'Z');
368: my @whichopt = &whichfoils($max,$randomize);
369: &check_for_invalid(\@whichopt,\@opt);
370: my $part=$Apache::inputtags::part;
371: my $id=$Apache::inputtags::response[-1];
372: my $break;
373: my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
374: if ( ($target ne 'tex') &&
375: &Apache::response::show_answer() ) {
376: my $temp=1;
377: foreach $name (@whichopt) {
378: my $text=$Apache::response::foilgroup{$name.'.text'};
379: my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
380: my $lastopt=$lastresponse{$name};
381: if ($text!~/^\s*$/) { $break='<br />'; }
382: $result.=$break;
383: if ($target eq 'web') {
384: my $value=$Apache::response::foilgroup{$name.'.value'};
385: if (!($text=~s|<drawoptionlist\s*/>|$value|)) {
386: if ($text=~/^\s*$/) {
387: $text=$value.$text;
388: } else {
389: $text='<b>'.$value.':</b> '.$text;
390: }
391: } else {
392: $text='•'.$text;
393: }
394: $result.=$text."\n";
395: }
396: if ($Apache::lonhomework::type eq 'exam') {
397: $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
398: }
399: $temp++;
400: }
401: } else {
402: my $temp=1;
403: my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
404: my $internal_counter=$Apache::lonxml::counter;
405: foreach $name (@whichopt) {
406: my $text=$Apache::response::foilgroup{$name.'.text'};
407: if ($text!~/^\s*$/) {
408: if ($target eq 'tex') {
409: $break='\vskip 0 mm ';
410: } elsif ($target eq 'web') {
411: $break='<br />';
412: }
413: }
414: my $lastopt=$lastresponse{$name};
415: my $optionlist="<option></option>\n";
416: foreach my $option (@opt) {
417: my $escopt=&HTML::Entities::encode($option,'\'"&<>');
418: if ($option eq $lastopt) {
419: $optionlist.="<option value='".$escopt."' selected=\"selected\">$option</option>\n";
420: } else {
421: $optionlist.="<option value='".$escopt."'>$option</option>\n";
422: }
423: }
424: if ($target ne 'tex') {
425: if ($Apache::lonhomework::type ne 'exam') {
426: $optionlist='<select onchange="javascript:setSubmittedPart(\''.
427: $part.'\');" name="HWVAL_'.
428: $Apache::inputtags::response['-1'].':'.$temp.'">'.
429: $optionlist."</select>\n";
430: } else {
431: $optionlist='<u>'.(' 'x10).'</u>';
432: }
433: if ($text=~s|<drawoptionlist\s*/>|$optionlist|) {
434: if ($Apache::lonhomework::type ne 'exam') {
435: $text='•'.$text;
436: }
437: } else {
438: if ($Apache::lonhomework::type ne 'exam') {
439: $text=$optionlist.$text;
440: }
441: }
442: $result.=$break.$text."\n";
443: if ($Apache::lonhomework::type eq 'exam') {
444: $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
445: }
446: $temp++;
447: } else {
448: my $texoptionlist='';
449: if ($displayoptionintex &&
450: $Apache::lonhomework::type ne 'exam') {
451: $texoptionlist = &optionlist_correction($TeXlayout,@opt);
452: }
453: if ($text=~/<drawoptionlist\s*\/>/) {
454: $text=~s|<drawoptionlist\s*\/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |g;
455: }
456:
457: if ($text=~m/\\item /) {
458: if ($Apache::lonhomework::type eq 'exam') {
459: $text=~s/\\item/\\vskip 2 mm/;
460: }
461: $result.= $texoptionlist.$text;
462: } else {
463: if ($Apache::lonhomework::type eq 'exam') {
464: $result.= $texoptionlist.' '.$text;
465: } else {
466: if ($text=~/\S/) {$result.= $texoptionlist.'\vspace*{-2 mm}\item '.$text;} else {$result.= $texoptionlist;}
467: }
468: }
469: if ($Apache::lonhomework::type eq 'exam') {
470: $result.='\vskip -1 mm\noindent\begin{enumerate}\item[\textbf{'.
471: $internal_counter.'}.]'.&bubbles(\@alphabet,\@opt).
472: '\end{enumerate} \vskip -8 mm \strut ';
473: $internal_counter++;
474: }
475: $displayoptionintex=0;
476: }
477: }
478: }
479:
480: if ($target eq 'web') {
481: &Apache::response::setup_prior_tries_hash(\&Apache::rankresponse::format_prior_answer,
482: [\@whichopt,
483: 'submissiongrading']);
484: }
485:
486: if ($target ne 'tex') {
487: return $result.$break;
488: } else {
489: return $result;
490: }
491: }
492:
493:
494: sub optionlist_correction {
495: my ($TeXlayout,@options) = @_;
496: my $texoptionlist='\\item [] Choices: ';
497: if ($TeXlayout eq 'vertical') {$texoptionlist='\\item []';}
498: if (scalar(@options) > 0) {
499: foreach my $option (@options) {
500: $texoptionlist.='{\bf '.
501: &Apache::lonxml::latex_special_symbols($option).
502: '}';
503: if ($TeXlayout eq 'vertical') {
504: $texoptionlist.=' \vskip 0 mm ',
505: } else {
506: $texoptionlist.=', ';
507: }
508: }
509: $texoptionlist=~s/, $//;
510: if ($TeXlayout ne 'vertical') {$texoptionlist.='.';}
511: } else {
512: if ($TeXlayout ne 'vertical') {$texoptionlist='\\item [] \\vskip -5 mm';}
513: }
514: return $texoptionlist;
515: }
516:
517:
518: sub webbubbles {
519: my ($ropt,$ralphabet,$temp,$lastopt)=@_;
520: my @opt=@$ropt;
521: my @alphabet=@$ralphabet;
522: my $result='';
523: my $number_of_bubbles = $#opt + 1;
524: $result.= '<table border="1"><tr>';
525: for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
526: my $checked='';
527: if ($lastopt eq $opt[$ind]) {
528: $checked=' checked="on" ';
529: }
530: $result.='<td><input type="radio" name="HWVAL_'.
531: $Apache::inputtags::response['-1'].':'.$temp.
532: '" value="'.$opt[$ind].'" '.$checked.' />';
533: if ($alphabet[$ind]) {
534: $result.=$alphabet[$ind].': ';
535: }
536: $result.=$opt[$ind].'</td>';
537: }
538: $result.='</tr></table>';
539: return $result;
540: }
541:
542:
543: sub bubbles {
544: my ($ralphabet,$ropt,$response, $max_width) = @_;
545: my @alphabet = @$ralphabet;
546: my @opt = @$ropt;
547: my ($result,$head,$line) =('','','');
548: my $number_of_bubbles = $#opt + 1;
549: my $current_length = 0;
550: my $textwidth;
551: if (defined($max_width)) {
552: $textwidth=$max_width;
553: &Apache::lonxml::debug("Max width passed in: $max_width");
554: } elsif ($env{'form.textwidth'} ne '') {
555: $env{'form.textwidth'}=~/(\d+)/;
556: $textwidth=$1;
557: &Apache::lonxml::debug("Max width from form: $textwidth");
558: } else {
559: $env{'form.textwidth'}=~/(\d*)\.?(\d*)/;
560: $textwidth=$1.'.'.$2;
561: &Apache::lonxml::debug("Max width defaults? $textwidth");
562: }
563: &Apache::lonxml::debug("Final maxwidth: $textwidth");
564: for (my $ind=0;$ind<=$number_of_bubbles;$ind++) {
565: my $leftmargin;
566: $opt[$ind]=&Apache::lonxml::latex_special_symbols($opt[$ind]);
567: if ($response eq 'rankresponse') {$opt[$ind]='Rank '.$opt[$ind];}
568: if ($ind==0) {$leftmargin=6;} else {$leftmargin=10;}
569:
570: $current_length += (length($opt[$ind])+length($alphabet[$ind])+4)*2;
571: if ($current_length<($textwidth-$leftmargin) and $ind!=$number_of_bubbles) {
572: $line.='\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
573: $head.='lr';
574: } else {
575: $line=~s/\&\s*$//;
576: $result.='\vskip -2 mm\noindent\setlength{\tabcolsep}{2 mm}\begin{tabular}{'.$head.'}'.$line.'\\\\\end{tabular}\vskip 0 mm';
577: $line = '\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';;
578: $head ='lr';
579: $current_length = (length($opt[$ind])+length($alphabet[$ind]))*2;
580: }
581:
582: }
583: return $result;
584: }
585:
586:
587: sub start_conceptgroup {
588: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
589: $Apache::optionresponse::conceptgroup=1;
590: %Apache::response::conceptgroup=();
591: my $result;
592: if ($target eq 'edit') {
593: $result.=&Apache::edit::tag_start($target,$token,"Concept Grouped Foils");
594: $result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
595: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
596: }
597: if ($target eq 'modified') {
598: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'concept');
599: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
600: }
601: return $result;
602: }
603:
604: sub end_conceptgroup {
605: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
606: $Apache::optionresponse::conceptgroup=0;
607: my $result='';
608: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
609: $target eq 'tex' || $target eq 'analyze') {
610: #if not there aren't any foils to display and thus no question
611: &Apache::response::pick_foil_for_concept($target,
612: ['value','text','location'],
613: \%Apache::hint::option,
614: $parstack,$safeeval);
615: } elsif ($target eq 'edit') {
616: $result=&Apache::edit::end_table();
617: }
618: return $result;
619: }
620:
621: sub insert_conceptgroup {
622: my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
623: return $result;
624: }
625:
626: sub start_foil {
627: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
628: my $result='';
629: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze' ) {
630: &Apache::lonxml::startredirection;
631: if ($target eq 'analyze') {
632: &Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
633: }
634: } elsif ($target eq 'edit') {
635: $result=&Apache::edit::tag_start($target,$token,"Foil");
636: my $level='-2';
637: if ($$tagstack['-2'] eq 'conceptgroup') { $level = '-3'; }
638: my @opt;
639: eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval,$level);
640: $result.=&Apache::edit::text_arg('Name:','name',$token);
641: $result.= &Apache::edit::select_or_text_arg('Correct Option:','value',
642: ['unused',(@opt)],$token,'15');
643: my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
644: $safeeval,'-3');
645: if ($randomize ne 'no') {
646: $result.=&Apache::edit::select_arg('Location:','location',
647: ['random','top','bottom'],$token);
648: }
649: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
650: } elsif ($target eq 'modified') {
651: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
652: 'value','name','location');
653: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
654: }
655: return $result;
656: }
657:
658: sub end_foil {
659: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
660: my $text ='';
661: my $result = '';
662: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
663: $text=&Apache::lonxml::endredirection;
664: if ($target eq 'tex') {$text=~s/\\strut\s*\\\\\s*\\strut/\\vskip 0 mm/;}
665: if (($target eq 'tex') and ($Apache::lonhomework::type ne 'exam') and ($text=~/\S/)) {$text = '\vspace*{-2 mm}\item '.$text;}
666: }
667: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
668: || $target eq 'tex' || $target eq 'analyze') {
669: my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
670: if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
671: $text='\vskip 5mm $\triangleright$ '.$text;
672: }
673: if ($value ne 'unused') {
674: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
675: &Apache::lonxml::debug("Got a name of :$name:");
676: if ($name eq "") {
677: &Apache::lonxml::warning("Foils without names exist. This can cause problems to malfunction.");
678: $name=$Apache::lonxml::curdepth;
679: }
680: &Apache::lonxml::debug("Using a name of :$name:");
681: if (defined($Apache::response::foilnames{$name})) {
682: &Apache::lonxml::error(&mt("Foil name <b><tt>[_1]</tt></b> appears more than once. Foil names need to be unique.",$name));
683: }
684: $Apache::response::foilnames{$name}++;
685: my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
686: if ( $Apache::optionresponse::conceptgroup
687: && !&Apache::response::showallfoils() ) {
688: push @{ $Apache::response::conceptgroup{'names'} }, $name;
689: $Apache::response::conceptgroup{"$name.value"} = $value;
690: $Apache::response::conceptgroup{"$name.text"} = $text;
691: $Apache::response::conceptgroup{"$name.location"} = $location;
692: } else {
693: push @{ $Apache::response::foilgroup{'names'} }, $name;
694: $Apache::response::foilgroup{"$name.value"} = $value;
695: $Apache::response::foilgroup{"$name.text"} = $text;
696: $Apache::response::foilgroup{"$name.location"} = $location;
697: }
698: }
699: }
700: if ($target eq 'edit') {
701: $result.= &Apache::edit::tag_end($target,$token,'');
702: }
703: return $result;
704: }
705:
706: sub start_drawoptionlist {
707: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
708: if (($target ne 'meta') && ($target ne 'answer')) {
709: return $token->[4];
710: }
711: }
712:
713: sub end_drawoptionlist {
714: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
715: if (($target ne 'meta') && ($target ne 'answer')) {
716: return $token->[2];
717: }
718: }
719:
720: sub insert_foil {
721: return '
722: <foil name="" value="unused">
723: <startouttext />
724: <endouttext />
725: </foil>';
726: }
727: 1;
728: __END__
729:
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