1: # LearningOnline Network with CAPA
2: # option list style responses
3: #
4: # $Id: optionresponse.pm,v 1.128 2005/06/21 21:00:55 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::end_row();
118: $result.= &Apache::edit::start_spanning_row();
119: $result.= $insertlist.'<br />';
120: }
121: if ($target eq 'modified') {
122: my @options;
123: my $optchanged=0;
124: eval '@options ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
125: if ($env{"form.$Apache::lonxml::curdepth.deleteopt"}) {
126: my $delopt=$env{"form.$Apache::lonxml::curdepth.deleteopt"};
127: &Apache::lonxml::debug("Deleting :$delopt:");
128: splice(@options,$delopt-1,1);
129: $optchanged=1;
130: }
131: if ($env{"form.$Apache::lonxml::curdepth.options"}) {
132: my $newopt = $env{"form.$Apache::lonxml::curdepth.options"};
133: if ($options[0]) {
134: push(@options,$newopt);
135: } else {
136: $options[0]=$newopt;
137: }
138: $optchanged=1;
139: }
140: if ($optchanged) {
141: $result = "<foilgroup options=\"(";
142: foreach my $option (@options) {
143: $option=~s/\'/\\\'/g;
144: &Apache::lonxml::debug("adding option :$option:");
145: $result .="'".$option."',";
146: }
147: chop $result;
148: $result.=')">';
149: } # else nothing changed so just use the default mechanism
150: }
151: if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
152: $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
153: \begin{enumerate} ';
154: }
155: return $result;
156: }
157:
158: sub end_foilgroup {
159: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
160:
161: my $result;
162: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
163: $target eq 'tex' || $target eq 'analyze') {
164: my $tex_option_switch=&Apache::lonxml::get_param('texoptions',$parstack,$safeeval);
165: my $name;
166: my @opt;
167: eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
168: &Apache::lonxml::debug("options:".join(':',@opt));
169:
170: my $TeXlayout=&Apache::lonxml::get_param('TeXlayout',$parstack,$safeeval,
171: -2,0);
172: if ($target eq 'tex' && $tex_option_switch eq 'nochoice') {@opt=();}
173: &Apache::lonxml::debug("Options are $#opt");
174: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
175: my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
176: $safeeval,'-2');
177: if ($target eq 'web' || $target eq 'tex') {
178: $result.=&displayfoils($target,$max,$randomize,$TeXlayout,@opt);
179: } elsif ( $target eq 'answer') {
180: $result.=&displayanswers($max,$randomize,@opt);
181: } elsif ( $target eq 'analyze') {
182: my @shown = &whichfoils($max,$randomize);
183: &Apache::response::analyze_store_foilgroup(\@shown,
184: ['text','value','location']);
185: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
186: push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
187: } elsif ( $target eq 'grade') {
188: if ( &Apache::response::submitted()) {
189: my @whichopt = &whichfoils($max,$randomize);
190: my $temp=1;my $name;
191: my %responsehash;
192: my %grade;
193: my $right=0;
194: my $wrong=0;
195: my $ignored=0;
196: foreach $name (@whichopt) {
197: my $response=&Apache::response::getresponse($temp);
198: if ($env{'form.submitted'} eq 'scantron' && $response=~/\S/) {
199: $response = $opt[$response];
200: }
201: if ( $response =~ /[^\s]/) {
202: $responsehash{$name}=$response;
203: my $value=$Apache::response::foilgroup{$name.'.value'};
204: &Apache::lonxml::debug("submitted a $response for $value<br />\n");
205: if ($value eq $response) {
206: $grade{$name}='1'; $right++;
207: } else {
208: $grade{$name}='0'; $wrong++;
209: }
210: } else {
211: $ignored++;
212: }
213: $temp++;
214: }
215: my $part=$Apache::inputtags::part;
216: my $id = $Apache::inputtags::response['-1'];
217: my $responsestr=&Apache::lonnet::hash2str(%responsehash);
218: my $gradestr =&Apache::lonnet::hash2str(%grade);
219: my %previous=&Apache::response::check_for_previous($responsestr,
220: $part,$id);
221: &Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored");
222: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
223: $responsestr;
224: $Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
225:
226: if ($Apache::lonhomework::type eq 'survey') {
227: if ($ignored == 0) {
228: my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED';
229: &Apache::response::handle_previous(\%previous,$ad);
230: } elsif ($wrong==0 && $right==0) {
231: } else {
232: my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='MISSING_ANSWER';
233: &Apache::response::handle_previous(\%previous,$ad);
234: }
235: } elsif (!$Apache::lonhomework::scantronmode) {
236: my $ad;
237: if ($wrong==0 && $ignored==0) {
238: $ad='EXACT_ANS';
239: } elsif ($wrong==0 && $right==0) {
240: #nothing submitted
241: } else {
242: if ($ignored==0) {
243: $ad='INCORRECT';
244: } else {
245: $ad='MISSING_ANSWER';
246: }
247: }
248: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
249: &Apache::response::handle_previous(\%previous,$ad);
250: } else {
251: my $ad;
252: if ($wrong==0 && $right==0) {
253: #nothing submitted only assign a score if we
254: #need to override a previous grade
255: if (defined($Apache::lonhomework::history{"resource.$part.$id.awarddetail"})) {
256: $ad='ASSIGNED_SCORE';
257: }
258: } else {
259: $ad='ASSIGNED_SCORE';
260: }
261: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
262: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=
263: $right/(scalar(@whichopt));
264: $Apache::lonhomework::results{"resource.$part.$id.numfoils"}=
265: scalar(@whichopt);
266: }
267: }
268: }
269: &Apache::lonxml::increment_counter(&getfoilcounts($max));
270: } elsif ($target eq 'edit') {
271: $result.=&Apache::edit::end_table();
272: }
273: if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
274: $result .= '\end{enumerate}';
275: }
276: &Apache::response::poprandomnumber();
277: return $result;
278: }
279:
280: sub getfoilcounts {
281: my ($max)=@_;
282: # +1 since instructors will count from 1
283: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
284: if (&Apache::response::showallfoils()) { $max=$count; }
285: if ($count>$max) { $count=$max }
286: &Apache::lonxml::debug("Count is $count from $max");
287: return $count;
288: }
289:
290: sub whichfoils {
291: my ($max,$randomize)=@_;
292: return &Apache::response::whichorder($max,$randomize,
293: &Apache::response::showallfoils(),
294: \%Apache::response::foilgroup);
295: }
296:
297: sub displayanswers {
298: my ($max,$randomize,@opt)=@_;
299: if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
300: my @names = @{ $Apache::response::foilgroup{'names'} };
301: my @whichopt = &whichfoils($max,$randomize);
302: my $result=&Apache::response::answer_header('optionresponse');
303: foreach my $name (@whichopt) {
304: $result.=&Apache::response::answer_part('optionresponse',
305: $Apache::response::foilgroup{$name.'.value'})
306: }
307: $result.=&Apache::response::answer_footer('optionresponse');
308: return $result;
309: }
310:
311: sub check_for_invalid {
312: my ($names,$options) = @_;
313: my %bad_names;
314: foreach my $name (@{ $names }) {
315: my $value=$Apache::response::foilgroup{$name.'.value'};
316: my $found=0;
317: foreach my $option (@{ $options }) {
318: if ($value eq $option) { $found=1; }
319: }
320: if (!$found) { $bad_names{$name}=$value; }
321: }
322: if (%bad_names) {
323: my $error=&mt('The question can not be gotten correct, '.
324: 'the following foils in the <optionresponse> '.
325: 'have invalid correct options').' <br /><tt>'.
326: join('<br />',(map { $_=&mt("[_1] with value [_2]",$_,$bad_names{$_}) } (keys(%bad_names)))).
327: "</tt>";
328: &Apache::lonxml::error($error);
329: }
330: }
331:
332: sub displayfoils {
333: my ($target,$max,$randomize,$TeXlayout,@opt)=@_;
334: if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
335: my @names = @{ $Apache::response::foilgroup{'names'} };
336: my @truelist;
337: my @falselist;
338: my $result;
339: my $name;
340: my $displayoptionintex=1;
341: my @alphabet = ('A'..'Z');
342: my @whichopt = &whichfoils($max,$randomize);
343: &check_for_invalid(\@whichopt,\@opt);
344: my $part=$Apache::inputtags::part;
345: my $id=$Apache::inputtags::response[-1];
346: my $break;
347: my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
348: if ( ($target ne 'tex') &&
349: &Apache::response::show_answer() ) {
350: my $temp=1;
351: foreach $name (@whichopt) {
352: my $text=$Apache::response::foilgroup{$name.'.text'};
353: my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
354: my $lastopt=$lastresponse{$name};
355: if ($text!~/^\s*$/) { $break='<br />'; }
356: $result.=$break;
357: if ($target eq 'web') {
358: my $value=$Apache::response::foilgroup{$name.'.value'};
359: if (!($text=~s|<drawoptionlist\s*/>|$value|)) {
360: if ($text=~/^\s*$/) {
361: $text=$value.$text;
362: } else {
363: $text='<b>'.$value.':</b> '.$text;
364: }
365: } else {
366: $text='•'.$text;
367: }
368: $result.=$text."\n";
369: }
370: if ($Apache::lonhomework::type eq 'exam') {
371: $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
372: }
373: $temp++;
374: }
375: } else {
376: my $temp=1;
377: my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
378: my $internal_counter=$Apache::lonxml::counter;
379: foreach $name (@whichopt) {
380: my $text=$Apache::response::foilgroup{$name.'.text'};
381: if ($text!~/^\s*$/) {
382: if ($target eq 'tex') {
383: $break='\vskip 0 mm ';
384: } elsif ($target eq 'web') {
385: $break='<br />';
386: }
387: }
388: my $lastopt=$lastresponse{$name};
389: my $optionlist="<option></option>\n";
390: foreach my $option (@opt) {
391: my $escopt=&HTML::Entities::encode($option,'\'"&<>');
392: if ($option eq $lastopt) {
393: $optionlist.="<option value='".$escopt."' selected=\"on\">$option</option>\n";
394: } else {
395: $optionlist.="<option value='".$escopt."'>$option</option>\n";
396: }
397: }
398: if ($target ne 'tex') {
399: if ($Apache::lonhomework::type ne 'exam') {
400: $optionlist='<select name="HWVAL_'.
401: $Apache::inputtags::response['-1'].':'.$temp.'">'.
402: $optionlist."</select>\n";
403: } else {
404: $optionlist='<u>'.(' 'x10).'</u>';
405: }
406: if ($text=~s|<drawoptionlist\s*/>|$optionlist|) {
407: if ($Apache::lonhomework::type ne 'exam') {
408: $text='•'.$text;
409: }
410: } else {
411: if ($Apache::lonhomework::type ne 'exam') {
412: $text=$optionlist.$text;
413: }
414: }
415: $result.=$break.$text."\n";
416: if ($Apache::lonhomework::type eq 'exam') {
417: $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
418: }
419: $temp++;
420: } else {
421: my $texoptionlist='';
422: if ($displayoptionintex &&
423: $Apache::lonhomework::type ne 'exam') {
424: $texoptionlist = &optionlist_correction($TeXlayout,@opt);
425: }
426: if ($text=~/<drawoptionlist\s*\/>/) {
427: $text=~s|<drawoptionlist\s*/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |;
428: }
429:
430: if ($text=~m/\\item /) {
431: if ($Apache::lonhomework::type eq 'exam') {
432: $text=~s/\\item/\\vskip 2 mm/;
433: }
434: $result.= $texoptionlist.$text;
435: } else {
436: if ($Apache::lonhomework::type eq 'exam') {
437: $result.= $texoptionlist.' '.$text;
438: } else {
439: if ($text=~/\S/) {$result.= $texoptionlist.'\vspace*{-2 mm}\item '.$text;} else {$result.= $texoptionlist;}
440: }
441: }
442: if ($Apache::lonhomework::type eq 'exam') {
443: $result.='\vskip -1 mm\noindent\begin{enumerate}\item[\textbf{'.
444: $internal_counter.'}.]'.&bubbles(\@alphabet,\@opt).
445: '\end{enumerate} \vskip -8 mm \strut ';
446: $internal_counter++;
447: }
448: $displayoptionintex=0;
449: }
450: }
451: }
452: if ($target ne 'tex') {
453: return $result.$break;
454: } else {
455: return $result;
456: }
457: }
458:
459:
460: sub optionlist_correction {
461: my ($TeXlayout,@options) = @_;
462: my $texoptionlist='\\item [] Choices: ';
463: if ($TeXlayout eq 'vertical') {$texoptionlist='\\item []';}
464: if (scalar(@options) > 0) {
465: foreach my $option (@options) {
466: $texoptionlist.='{\bf '.
467: &Apache::lonxml::latex_special_symbols($option).
468: '}';
469: if ($TeXlayout eq 'vertical') {
470: $texoptionlist.=' \vskip 0 mm ',
471: } else {
472: $texoptionlist.=', ';
473: }
474: }
475: $texoptionlist=~s/, $//;
476: if ($TeXlayout ne 'vertical') {$texoptionlist.='.';}
477: } else {
478: if ($TeXlayout ne 'vertical') {$texoptionlist='\\item [] \\vskip -5 mm';}
479: }
480: return $texoptionlist;
481: }
482:
483:
484: sub webbubbles {
485: my ($ropt,$ralphabet,$temp,$lastopt)=@_;
486: my @opt=@$ropt;
487: my @alphabet=@$ralphabet;
488: my $result='';
489: my $number_of_bubbles = $#opt + 1;
490: $result.= '<table border="1"><tr>';
491: for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
492: my $checked='';
493: if ($lastopt eq $opt[$ind]) {
494: $checked=' checked="on" ';
495: }
496: $result.='<td><input type="radio" name="HWVAL_'.
497: $Apache::inputtags::response['-1'].':'.$temp.
498: '" value="'.$opt[$ind].'" '.$checked.' />';
499: if ($alphabet[$ind]) {
500: $result.=$alphabet[$ind].': ';
501: }
502: $result.=$opt[$ind].'</td>';
503: }
504: $result.='</tr></table>';
505: return $result;
506: }
507:
508:
509: sub bubbles {
510: my ($ralphabet,$ropt,$response) = @_;
511: my @alphabet = @$ralphabet;
512: my @opt = @$ropt;
513: my ($result,$head,$line) =('','','');
514: my $number_of_bubbles = $#opt + 1;
515: my $current_length = 0;
516: my $textwidth;
517: if ($env{'form.textwidth'} ne '') {
518: $env{'form.textwidth'}=~/(\d+)/;
519: $textwidth=$1;
520: } else {
521: $env{'form.textwidth'}=~/(\d*)\.?(\d*)/;
522: $textwidth=$1.'.'.$2;
523: }
524: for (my $ind=0;$ind<=$number_of_bubbles;$ind++) {
525: my $leftmargin;
526: $opt[$ind]=&Apache::lonxml::latex_special_symbols($opt[$ind]);
527: if ($response eq 'rankresponse') {$opt[$ind]='Rank '.$opt[$ind];}
528: if ($ind==0) {$leftmargin=6;} else {$leftmargin=10;}
529: $current_length += (length($opt[$ind])+length($alphabet[$ind])+4)*2;
530: if ($current_length<($textwidth-$leftmargin) and $ind!=$number_of_bubbles) {
531: $line.='\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
532: $head.='lr';
533: } else {
534: $line=~s/\&\s*$//;
535: $result.='\vskip -2 mm\noindent\begin{tabular}{'.$head.'}'.$line.'\\\\\end{tabular}\vskip 0 mm';
536: $line = '\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';;
537: $head ='lr';
538: $current_length = (length($opt[$ind])+length($alphabet[$ind]))*2;
539: }
540:
541: }
542: return $result;
543: }
544:
545:
546: sub start_conceptgroup {
547: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
548: $Apache::optionresponse::conceptgroup=1;
549: %Apache::response::conceptgroup=();
550: my $result;
551: if ($target eq 'edit') {
552: $result.=&Apache::edit::tag_start($target,$token,"Concept Grouped Foils");
553: $result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
554: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
555: }
556: if ($target eq 'modified') {
557: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'concept');
558: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
559: }
560: return $result;
561: }
562:
563: sub end_conceptgroup {
564: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
565: $Apache::optionresponse::conceptgroup=0;
566: my $result='';
567: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
568: $target eq 'tex' || $target eq 'analyze') {
569: #if not there aren't any foils to display and thus no question
570: &Apache::response::pick_foil_for_concept($target,
571: ['value','text','location'],
572: \%Apache::hint::option,
573: $parstack,$safeeval);
574: } elsif ($target eq 'edit') {
575: $result=&Apache::edit::end_table();
576: }
577: return $result;
578: }
579:
580: sub insert_conceptgroup {
581: my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
582: return $result;
583: }
584:
585: sub start_foil {
586: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
587: my $result='';
588: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze' ) {
589: &Apache::lonxml::startredirection;
590: if ($target eq 'analyze') {
591: &Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
592: }
593: } elsif ($target eq 'edit') {
594: $result=&Apache::edit::tag_start($target,$token,"Foil");
595: my $level='-2';
596: if ($$tagstack['-2'] eq 'conceptgroup') { $level = '-3'; }
597: my @opt;
598: eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval,$level);
599: $result.=&Apache::edit::text_arg('Name:','name',$token);
600: $result.= &Apache::edit::select_or_text_arg('Correct Option:','value',
601: ['unused',(@opt)],$token,'15');
602: my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
603: $safeeval,'-3');
604: if ($randomize ne 'no') {
605: $result.=&Apache::edit::select_arg('Location:','location',
606: ['random','top','bottom'],$token);
607: }
608: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
609: } elsif ($target eq 'modified') {
610: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
611: 'value','name','location');
612: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
613: }
614: return $result;
615: }
616:
617: sub end_foil {
618: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
619: my $text ='';
620: my $result = '';
621: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
622: $text=&Apache::lonxml::endredirection;
623: if ($target eq 'tex') {$text=~s/\\strut\s*\\\\\s*\\strut/\\vskip 0 mm/;}
624: if (($target eq 'tex') and ($Apache::lonhomework::type ne 'exam') and ($text=~/\S/)) {$text = '\vspace*{-2 mm}\item '.$text;}
625: }
626: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
627: || $target eq 'tex' || $target eq 'analyze') {
628: my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
629: if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
630: $text='\vskip 5mm $\triangleright$ '.$text;
631: }
632: if ($value ne 'unused') {
633: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
634: &Apache::lonxml::debug("Got a name of :$name:");
635: if (!$name) {
636: &Apache::lonxml::warning("Foils without names exist. This can cause problems to malfunction.");
637: $name=$Apache::lonxml::curdepth;
638: }
639: &Apache::lonxml::debug("Using a name of :$name:");
640: if (defined($Apache::response::foilnames{$name})) {
641: &Apache::lonxml::error(&mt("Foil name <b><tt>[_1]</tt></b> appears more than once. Foil names need to be unique.",$name));
642: }
643: $Apache::response::foilnames{$name}++;
644: my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
645: if ( $Apache::optionresponse::conceptgroup
646: && !&Apache::response::showallfoils() ) {
647: push @{ $Apache::response::conceptgroup{'names'} }, $name;
648: $Apache::response::conceptgroup{"$name.value"} = $value;
649: $Apache::response::conceptgroup{"$name.text"} = $text;
650: $Apache::response::conceptgroup{"$name.location"} = $location;
651: } else {
652: push @{ $Apache::response::foilgroup{'names'} }, $name;
653: $Apache::response::foilgroup{"$name.value"} = $value;
654: $Apache::response::foilgroup{"$name.text"} = $text;
655: $Apache::response::foilgroup{"$name.location"} = $location;
656: }
657: }
658: }
659: if ($target eq 'edit') {
660: $result.= &Apache::edit::tag_end($target,$token,'');
661: }
662: return $result;
663: }
664:
665: sub start_drawoptionlist {
666: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
667: if ($target ne 'meta') {
668: return $token->[4];
669: }
670: }
671:
672: sub end_drawoptionlist {
673: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
674: if ($target ne 'meta') {
675: return $token->[2];
676: }
677: }
678:
679: sub insert_foil {
680: return '
681: <foil name="" value="unused">
682: <startouttext />
683: <endouttext />
684: </foil>';
685: }
686: 1;
687: __END__
688:
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