1: # LearningOnline Network with CAPA
2: # option list style responses
3: #
4: # $Id: optionresponse.pm,v 1.125 2005/04/07 06:56:22 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: my $TeXlayout=&Apache::lonxml::get_param('TeXlayout',$parstack,$safeeval,
169: -2,0);
170: if ($target eq 'tex' && $tex_option_switch eq 'nochoice') {@opt=();}
171: &Apache::lonxml::debug("Options are $#opt");
172: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
173: my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
174: $safeeval,'-2');
175: if ($target eq 'web' || $target eq 'tex') {
176: $result.=&displayfoils($target,$max,$randomize,$TeXlayout,@opt);
177: } elsif ( $target eq 'answer') {
178: $result.=&displayanswers($max,$randomize,@opt);
179: } elsif ( $target eq 'analyze') {
180: my @shown = &whichfoils($max,$randomize);
181: &Apache::response::analyze_store_foilgroup(\@shown,
182: ['text','value','location']);
183: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
184: push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
185: } elsif ( $target eq 'grade') {
186: if ( &Apache::response::submitted()) {
187: my @whichopt = &whichfoils($max,$randomize);
188: my $temp=1;my $name;
189: my %responsehash;
190: my %grade;
191: my $right=0;
192: my $wrong=0;
193: my $ignored=0;
194: foreach $name (@whichopt) {
195: my $response=&Apache::response::getresponse($temp);
196: if ($env{'form.submitted'} eq 'scantron' && $response=~/\S/) {
197: $response = $opt[$response];
198: }
199: if ( $response =~ /[^\s]/) {
200: $responsehash{$name}=$response;
201: my $value=$Apache::response::foilgroup{$name.'.value'};
202: &Apache::lonxml::debug("submitted a $response for $value<br />\n");
203: if ($value eq $response) {
204: $grade{$name}='1'; $right++;
205: } else {
206: $grade{$name}='0'; $wrong++;
207: }
208: } else {
209: $ignored++;
210: }
211: $temp++;
212: }
213: my $part=$Apache::inputtags::part;
214: my $id = $Apache::inputtags::response['-1'];
215: my $responsestr=&Apache::lonnet::hash2str(%responsehash);
216: my $gradestr =&Apache::lonnet::hash2str(%grade);
217: my %previous=&Apache::response::check_for_previous($responsestr,
218: $part,$id);
219: &Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored");
220: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
221: $responsestr;
222: $Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
223:
224: if ($Apache::lonhomework::type eq 'survey') {
225: if ($ignored == 0) {
226: my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED';
227: &Apache::response::handle_previous(\%previous,$ad);
228: } elsif ($wrong==0 && $right==0) {
229: } else {
230: my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='MISSING_ANSWER';
231: &Apache::response::handle_previous(\%previous,$ad);
232: }
233: } elsif (!$Apache::lonhomework::scantronmode) {
234: my $ad;
235: if ($wrong==0 && $ignored==0) {
236: $ad='EXACT_ANS';
237: } elsif ($wrong==0 && $right==0) {
238: #nothing submitted
239: } else {
240: if ($ignored==0) {
241: $ad='INCORRECT';
242: } else {
243: $ad='MISSING_ANSWER';
244: }
245: }
246: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
247: &Apache::response::handle_previous(\%previous,$ad);
248: } else {
249: my $ad;
250: if ($wrong==0 && $right==0) {
251: #nothing submitted only assign a score if we
252: #need to override a previous grade
253: if (defined($Apache::lonhomework::history{"resource.$part.$id.awarddetail"})) {
254: $ad='ASSIGNED_SCORE';
255: }
256: } else {
257: $ad='ASSIGNED_SCORE';
258: }
259: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
260: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=
261: $right/(scalar(@whichopt));
262: $Apache::lonhomework::results{"resource.$part.$id.numfoils"}=
263: scalar(@whichopt);
264: }
265: }
266: }
267: &Apache::lonxml::increment_counter(&getfoilcounts($max));
268: } elsif ($target eq 'edit') {
269: $result.=&Apache::edit::end_table();
270: }
271: if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
272: $result .= '\end{enumerate}';
273: }
274: &Apache::response::poprandomnumber();
275: return $result;
276: }
277:
278: sub getfoilcounts {
279: my ($max)=@_;
280: # +1 since instructors will count from 1
281: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
282: if (&Apache::response::showallfoils()) { $max=$count; }
283: if ($count>$max) { $count=$max }
284: &Apache::lonxml::debug("Count is $count from $max");
285: return $count;
286: }
287:
288: sub whichfoils {
289: my ($max,$randomize)=@_;
290: return &Apache::response::whichorder($max,$randomize,
291: &Apache::response::showallfoils(),
292: \%Apache::response::foilgroup);
293: }
294:
295: sub displayanswers {
296: my ($max,$randomize,@opt)=@_;
297: if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
298: my @names = @{ $Apache::response::foilgroup{'names'} };
299: my @whichopt = &whichfoils($max,$randomize);
300: my $result=&Apache::response::answer_header('optionresponse');
301: foreach my $name (@whichopt) {
302: $result.=&Apache::response::answer_part('optionresponse',
303: $Apache::response::foilgroup{$name.'.value'})
304: }
305: $result.=&Apache::response::answer_footer('optionresponse');
306: return $result;
307: }
308:
309: sub check_for_invalid {
310: my ($names,$options) = @_;
311: my %bad_names;
312: foreach my $name (@{ $names }) {
313: my $value=$Apache::response::foilgroup{$name.'.value'};
314: my $found=0;
315: foreach my $option (@{ $options }) {
316: if ($value eq $option) { $found=1; }
317: }
318: if (!$found) { $bad_names{$name}=$value; }
319: }
320: if (%bad_names) {
321: my $error=&mt('The question can not be gotten correct, '.
322: 'the following foils in the <optionresponse> '.
323: 'have invalid correct options').' <br /><tt>'.
324: join('<br />',(map { $_=&mt("[_1] with value [_2]",$_,$bad_names{$_}) } (keys(%bad_names)))).
325: "</tt>";
326: &Apache::lonxml::error($error);
327: }
328: }
329:
330: sub displayfoils {
331: my ($target,$max,$randomize,$TeXlayout,@opt)=@_;
332: if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
333: my @names = @{ $Apache::response::foilgroup{'names'} };
334: my @truelist;
335: my @falselist;
336: my $result;
337: my $name;
338: my $displayoptionintex=1;
339: my @alphabet = ('A'..'Z');
340: my @whichopt = &whichfoils($max,$randomize);
341: &check_for_invalid(\@whichopt,\@opt);
342: my $part=$Apache::inputtags::part;
343: my $id=$Apache::inputtags::response[-1];
344: my $break;
345: my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
346: if ( ($target ne 'tex') &&
347: &Apache::response::show_answer() ) {
348: my $temp=1;
349: foreach $name (@whichopt) {
350: my $text=$Apache::response::foilgroup{$name.'.text'};
351: my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
352: my $lastopt=$lastresponse{$name};
353: if ($text!~/^\s*$/) { $break='<br />'; }
354: $result.=$break;
355: if ($target eq 'web') {
356: my $value=$Apache::response::foilgroup{$name.'.value'};
357: if (!($text=~s|<drawoptionlist\s*/>|$value|)) {
358: if ($text=~/^\s*$/) {
359: $text=$value.$text;
360: } else {
361: $text=$value.': '.$text;
362: }
363: } else {
364: $text='•'.$text;
365: }
366: $result.=$text."\n";
367: }
368: if ($Apache::lonhomework::type eq 'exam') {
369: $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
370: }
371: $temp++;
372: }
373: } else {
374: my $temp=1;
375: my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
376: my $internal_counter=$Apache::lonxml::counter;
377: foreach $name (@whichopt) {
378: my $text=$Apache::response::foilgroup{$name.'.text'};
379: if ($text!~/^\s*$/) {
380: if ($target eq 'tex') {
381: $break='\vskip 0 mm ';
382: } elsif ($target eq 'web') {
383: $break='<br />';
384: }
385: }
386: my $lastopt=$lastresponse{$name};
387: my $optionlist="<option></option>\n";
388: my $option;
389: foreach $option (@opt) {
390: if ($option eq $lastopt) {
391: $optionlist.="<option selected=\"on\">$option</option>\n";
392: } else {
393: $optionlist.="<option>$option</option>\n";
394: }
395: }
396: if ($target ne 'tex') {
397: if ($Apache::lonhomework::type ne 'exam') {
398: $optionlist='<select name="HWVAL_'.
399: $Apache::inputtags::response['-1'].':'.$temp.'">'.
400: $optionlist."</select>\n";
401: } else {
402: $optionlist='<u>'.(' 'x10).'</u>';
403: }
404: if ($text=~s|<drawoptionlist\s*/>|$optionlist|) {
405: if ($Apache::lonhomework::type ne 'exam') {
406: $text='•'.$text;
407: }
408: } else {
409: if ($Apache::lonhomework::type ne 'exam') {
410: $text=$optionlist.$text;
411: }
412: }
413: $result.=$break.$text."\n";
414: if ($Apache::lonhomework::type eq 'exam') {
415: $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
416: }
417: $temp++;
418: } else {
419: my $texoptionlist='';
420: if ($displayoptionintex &&
421: $Apache::lonhomework::type ne 'exam') {
422: $texoptionlist = &optionlist_correction($TeXlayout,@opt);
423: }
424: if ($text=~/<drawoptionlist\s*\/>/) {
425: $text=~s|<drawoptionlist\s*/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |;
426: }
427:
428: if ($text=~m/\\item /) {
429: if ($Apache::lonhomework::type eq 'exam') {
430: $text=~s/\\item/\\vskip 2 mm/;
431: }
432: $result.= $texoptionlist.$text;
433: } else {
434: if ($Apache::lonhomework::type eq 'exam') {
435: $result.= $texoptionlist.' '.$text;
436: } else {
437: if ($text=~/\S/) {$result.= $texoptionlist.'\vspace*{-2 mm}\item '.$text;} else {$result.= $texoptionlist;}
438: }
439: }
440: if ($Apache::lonhomework::type eq 'exam') {
441: $result.='\vskip -1 mm\noindent\begin{enumerate}\item[\textbf{'.
442: $internal_counter.'}.]'.&bubbles(\@alphabet,\@opt).
443: '\end{enumerate} \vskip -8 mm \strut ';
444: $internal_counter++;
445: }
446: $displayoptionintex=0;
447: }
448: }
449: }
450: if ($target ne 'tex') {
451: return $result.$break;
452: } else {
453: return $result;
454: }
455: }
456:
457:
458: sub optionlist_correction {
459: my ($TeXlayout,@options) = @_;
460: my $texoptionlist='\\item [] Choices: ';
461: if ($TeXlayout eq 'vertical') {$texoptionlist='\\item []';}
462: if (scalar(@options) > 0) {
463: foreach my $option (@options) {
464: $texoptionlist.='{\bf '.
465: &Apache::lonxml::latex_special_symbols($option).
466: '}';
467: if ($TeXlayout eq 'vertical') {
468: $texoptionlist.=' \vskip 0 mm ',
469: } else {
470: $texoptionlist.=', ';
471: }
472: }
473: $texoptionlist=~s/, $//;
474: if ($TeXlayout ne 'vertical') {$texoptionlist.='.';}
475: } else {
476: if ($TeXlayout ne 'vertical') {$texoptionlist='\\item [] \\vskip -5 mm';}
477: }
478: return $texoptionlist;
479: }
480:
481:
482: sub webbubbles {
483: my ($ropt,$ralphabet,$temp,$lastopt)=@_;
484: my @opt=@$ropt;
485: my @alphabet=@$ralphabet;
486: my $result='';
487: my $number_of_bubbles = $#opt + 1;
488: $result.= '<table border="1"><tr>';
489: for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
490: my $checked='';
491: if ($lastopt eq $opt[$ind]) {
492: $checked=' checked="on" ';
493: }
494: $result.='<td><input type="radio" name="HWVAL_'.
495: $Apache::inputtags::response['-1'].':'.$temp.
496: '" value="'.$opt[$ind].'" '.$checked.' />';
497: if ($alphabet[$ind]) {
498: $result.=$alphabet[$ind].': ';
499: }
500: $result.=$opt[$ind].'</td>';
501: }
502: $result.='</tr></table>';
503: return $result;
504: }
505:
506:
507: sub bubbles {
508: my ($ralphabet,$ropt,$response) = @_;
509: my @alphabet = @$ralphabet;
510: my @opt = @$ropt;
511: my ($result,$head,$line) =('','','');
512: my $number_of_bubbles = $#opt + 1;
513: my $current_length = 0;
514: my $textwidth;
515: if ($env{'form.textwidth'} ne '') {
516: $env{'form.textwidth'}=~/(\d+)/;
517: $textwidth=$1;
518: } else {
519: $env{'form.textwidth'}=~/(\d*)\.?(\d*)/;
520: $textwidth=$1.'.'.$2;
521: }
522: for (my $ind=0;$ind<=$number_of_bubbles;$ind++) {
523: my $leftmargin;
524: $opt[$ind]=&Apache::lonxml::latex_special_symbols($opt[$ind]);
525: if ($response eq 'rankresponse') {$opt[$ind]='Rank '.$opt[$ind];}
526: if ($ind==0) {$leftmargin=6;} else {$leftmargin=10;}
527: $current_length += (length($opt[$ind])+length($alphabet[$ind])+4)*2;
528: if ($current_length<($textwidth-$leftmargin) and $ind!=$number_of_bubbles) {
529: $line.='\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
530: $head.='lr';
531: } else {
532: $line=~s/\&\s*$//;
533: $result.='\vskip -2 mm\noindent\begin{tabular}{'.$head.'}'.$line.'\\\\\end{tabular}\vskip 0 mm';
534: $line = '\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';;
535: $head ='lr';
536: $current_length = (length($opt[$ind])+length($alphabet[$ind]))*2;
537: }
538:
539: }
540: return $result;
541: }
542:
543:
544: sub start_conceptgroup {
545: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
546: $Apache::optionresponse::conceptgroup=1;
547: %Apache::response::conceptgroup=();
548: my $result;
549: if ($target eq 'edit') {
550: $result.=&Apache::edit::tag_start($target,$token,"Concept Grouped Foils");
551: $result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
552: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
553: }
554: if ($target eq 'modified') {
555: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'concept');
556: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
557: }
558: return $result;
559: }
560:
561: sub end_conceptgroup {
562: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
563: $Apache::optionresponse::conceptgroup=0;
564: my $result='';
565: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
566: $target eq 'tex' || $target eq 'analyze') {
567: #if not there aren't any foils to display and thus no question
568: &Apache::response::pick_foil_for_concept($target,
569: ['value','text','location'],
570: \%Apache::hint::option,
571: $parstack,$safeeval);
572: } elsif ($target eq 'edit') {
573: $result=&Apache::edit::end_table();
574: }
575: return $result;
576: }
577:
578: sub insert_conceptgroup {
579: my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
580: return $result;
581: }
582:
583: sub start_foil {
584: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
585: my $result='';
586: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze' ) {
587: &Apache::lonxml::startredirection;
588: if ($target eq 'analyze') {
589: &Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
590: }
591: } elsif ($target eq 'edit') {
592: $result=&Apache::edit::tag_start($target,$token,"Foil");
593: my $level='-2';
594: if ($$tagstack['-2'] eq 'conceptgroup') { $level = '-3'; }
595: my @opt;
596: eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval,$level);
597: $result.=&Apache::edit::text_arg('Name:','name',$token);
598: $result.= &Apache::edit::select_or_text_arg('Correct Option:','value',
599: ['unused',(@opt)],$token,'15');
600: my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
601: $safeeval,'-3');
602: if ($randomize ne 'no') {
603: $result.=&Apache::edit::select_arg('Location:','location',
604: ['random','top','bottom'],$token);
605: }
606: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
607: } elsif ($target eq 'modified') {
608: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
609: 'value','name','location');
610: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
611: }
612: return $result;
613: }
614:
615: sub end_foil {
616: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
617: my $text ='';
618: my $result = '';
619: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
620: $text=&Apache::lonxml::endredirection;
621: if ($target eq 'tex') {$text=~s/\\strut\s*\\\\\s*\\strut/\\vskip 0 mm/;}
622: if (($target eq 'tex') and ($Apache::lonhomework::type ne 'exam') and ($text=~/\S/)) {$text = '\vspace*{-2 mm}\item '.$text;}
623: }
624: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
625: || $target eq 'tex' || $target eq 'analyze') {
626: my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
627: if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
628: $text='\vskip 5mm $\triangleright$ '.$text;
629: }
630: if ($value ne 'unused') {
631: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
632: &Apache::lonxml::debug("Got a name of :$name:");
633: if (!$name) {
634: &Apache::lonxml::error("Foils without names exist. This can cause problems to malfunction.");
635: $name=$Apache::lonxml::curdepth;
636: }
637: &Apache::lonxml::debug("Using a name of :$name:");
638: if (defined($Apache::response::foilnames{$name})) {
639: &Apache::lonxml::error(&mt("Foil name <b><tt>[_1]</tt></b> appears more than once. Foil names need to be unique.",$name));
640: }
641: $Apache::response::foilnames{$name}++;
642: my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
643: if ( $Apache::optionresponse::conceptgroup
644: && !&Apache::response::showallfoils() ) {
645: push @{ $Apache::response::conceptgroup{'names'} }, $name;
646: $Apache::response::conceptgroup{"$name.value"} = $value;
647: $Apache::response::conceptgroup{"$name.text"} = $text;
648: $Apache::response::conceptgroup{"$name.location"} = $location;
649: } else {
650: push @{ $Apache::response::foilgroup{'names'} }, $name;
651: $Apache::response::foilgroup{"$name.value"} = $value;
652: $Apache::response::foilgroup{"$name.text"} = $text;
653: $Apache::response::foilgroup{"$name.location"} = $location;
654: }
655: }
656: }
657: if ($target eq 'edit') {
658: $result.= &Apache::edit::tag_end($target,$token,'');
659: }
660: return $result;
661: }
662:
663: sub start_drawoptionlist {
664: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
665: if ($target ne 'meta') {
666: return $token->[4];
667: }
668: }
669:
670: sub end_drawoptionlist {
671: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
672: if ($target ne 'meta') {
673: return $token->[2];
674: }
675: }
676:
677: sub insert_foil {
678: return '
679: <foil name="" value="unused">
680: <startouttext />
681: <endouttext />
682: </foil>';
683: }
684: 1;
685: __END__
686:
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