1: # The LearningOnline Network with CAPA
2: # mutliple choice style responses
3: #
4: # $Id: radiobuttonresponse.pm,v 1.96 2004/10/21 03:34:06 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:
29: package Apache::radiobuttonresponse;
30: use strict;
31: use HTML::Entities();
32: use Apache::lonlocal;
33:
34: BEGIN {
35: &Apache::lonxml::register('Apache::radiobuttonresponse',('radiobuttonresponse'));
36: }
37:
38: sub start_radiobuttonresponse {
39: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
40: my $result;
41: #when in a radiobutton response use these
42: &Apache::lonxml::register('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
43: push (@Apache::lonxml::namespace,'radiobuttonresponse');
44: my $id = &Apache::response::start_response($parstack,$safeeval);
45: %Apache::hint::radiobutton=();
46: undef(%Apache::response::foilnames);
47: if ($target eq 'meta') {
48: $result=&Apache::response::meta_package_write('radiobuttonresponse');
49: } elsif ($target eq 'edit' ) {
50: $result.=&Apache::edit::start_table($token).
51: '<tr><td>'.&Apache::lonxml::description($token).
52: &Apache::loncommon::help_open_topic('Radio_Response_Problems').
53: "</td><td>Delete:".
54: &Apache::edit::deletelist($target,$token)
55: ."</td><td> ".&Apache::edit::end_row()
56: .&Apache::edit::start_spanning_row();
57: $result.=
58: &Apache::edit::text_arg('Max Number Of Shown Foils:','max',
59: $token,'4').
60: &Apache::edit::select_arg('Randomize Foil Order','randomize',
61: ['yes','no'],$token).
62: &Apache::edit::end_row().
63: &Apache::edit::start_spanning_row()."\n";
64: } elsif ($target eq 'modified') {
65: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
66: $safeeval,'max',
67: 'randomize');
68: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
69: } elsif ($target eq 'tex') {
70: my $type=&Apache::lonxml::get_param('TeXtype',$parstack,$safeeval,
71: undef,0);
72: if ($type eq '1') {
73: $result .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}';
74: } elsif ($type eq 'A') {
75: $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}';
76: } elsif ($type eq 'a') {
77: $result .= ' \renewcommand{\labelenumi}{\alph{enumi}.}';
78: } elsif ($type eq 'i') {
79: $result .= ' \renewcommand{\labelenumi}{\roman{enumi}.}';
80: } else {
81: $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}';
82: }
83: $result .= '\begin{enumerate}';
84: } elsif ($target eq 'analyze') {
85: my $part_id="$Apache::inputtags::part.$id";
86: push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
87: }
88: return $result;
89: }
90:
91: sub end_radiobuttonresponse {
92: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
93: my $result;
94: if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
95: if ($target eq 'tex') { $result .= '\end{enumerate}'; }
96: &Apache::response::end_response;
97: pop @Apache::lonxml::namespace;
98: &Apache::lonxml::deregister('Apache::radiobuttonresponse',('foilgroup','foil','conceptgroup'));
99: undef(%Apache::response::foilnames);
100: return $result;
101: }
102:
103: %Apache::response::foilgroup=();
104: sub start_foilgroup {
105: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
106: my $result;
107: %Apache::response::foilgroup=();
108: $Apache::radiobuttonresponse::conceptgroup=0;
109: &Apache::response::pushrandomnumber();
110: if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
111: $result.='\item[\textbf{'.$Apache::lonxml::counter.'}.]';
112: }
113: return $result;
114: }
115:
116: sub storesurvey {
117: if ( !defined($ENV{'form.submitted'})) { return ''; }
118: my $response = $ENV{'form.HWVAL_'.$Apache::inputtags::response['-1']};
119: &Apache::lonxml::debug("Here I am!:$response:");
120: if ( $response !~ /[0-9]+/) { return ''; }
121: my $part = $Apache::inputtags::part;
122: my $id = $Apache::inputtags::response['-1'];
123: my @whichfoils=@{ $Apache::response::foilgroup{'names'} };
124: my %responsehash;
125: $responsehash{$whichfoils[$response]}=$response;
126: my $responsestr=&Apache::lonnet::hash2str(%responsehash);
127: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
128: $responsestr;
129: my %previous=&Apache::response::check_for_previous($responsestr,$part,$id);
130: my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED';
131: &Apache::response::handle_previous(\%previous,$ad);
132: &Apache::lonxml::debug("submitted a $response<br />\n");
133: return '';
134: }
135:
136: sub grade_response {
137: my ($max,$randomize)=@_;
138: #keep the random numbers the same must always call this
139: my ($answer,@whichfoils)=&whichfoils($max,$randomize);
140: if (!defined($ENV{'form.submitted'})) { return; }
141: my $response;
142: if ($ENV{'form.submitted'} eq 'scantron') {
143: $response=&Apache::response::getresponse();
144: } else {
145: $response = $ENV{'form.HWVAL_'.$Apache::inputtags::response['-1']};
146: }
147: if ( $response !~ /[0-9]+/) { return; }
148: my $part=$Apache::inputtags::part;
149: my $id = $Apache::inputtags::response['-1'];
150: my %responsehash;
151: $responsehash{$whichfoils[$response]}=$response;
152: my $responsestr=&Apache::lonnet::hash2str(%responsehash);
153: my %previous=&Apache::response::check_for_previous($responsestr,
154: $part,$id);
155: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
156: $responsestr;
157: &Apache::lonxml::debug("submitted a $response<br />\n");
158: my $ad;
159: if ($response == $answer) {
160: $ad='EXACT_ANS';
161: } else {
162: $ad='INCORRECT';
163: }
164: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
165: &Apache::response::handle_previous(\%previous,$ad);
166: }
167:
168: sub end_foilgroup {
169: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
170:
171: my $result;
172: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
173: $target eq 'tex' || $target eq 'analyze') {
174: my $style = $Apache::lonhomework::type;
175: my $direction = &Apache::lonxml::get_param('direction',$parstack,
176: $safeeval,'-2');
177: if ( $style eq 'survey' && $target ne 'analyze') {
178: if ($target eq 'web' || $target eq 'tex') {
179: $result=&displayallfoils($direction);
180: } elsif ( $target eq 'answer' ) {
181: $result=&displayallanswers();
182: } elsif ( $target eq 'grade' ) {
183: $result=&storesurvey();
184: }
185: } else {
186: my $name;
187: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,
188: '-2');
189: my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
190: $safeeval,'-2');
191: if ($target eq 'web' || $target eq 'tex') {
192: $result=&displayfoils($target,$max,$randomize,$direction);
193: } elsif ($target eq 'answer' ) {
194: $result=&displayanswers($max,$randomize);
195: } elsif ( $target eq 'grade') {
196: &grade_response($max,$randomize);
197: } elsif ( $target eq 'analyze') {
198: my @shown = &whichfoils($max,$randomize);
199: &Apache::response::analyze_store_foilgroup(\@shown,
200: ['text','value','location']);
201: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
202: push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },
203: ('true','false'));
204: }
205: }
206: }
207: &Apache::response::poprandomnumber();
208: &Apache::lonxml::increment_counter();
209: return $result;
210: }
211:
212: sub getfoilcounts {
213: my @names;
214: my $truecnt=0;
215: my $falsecnt=0;
216: my $name;
217: if ( $Apache::response::foilgroup{'names'} ) {
218: @names= @{ $Apache::response::foilgroup{'names'} };
219: }
220: foreach $name (@names) {
221: if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
222: $truecnt++;
223: } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
224: $falsecnt++;
225: }
226: }
227: return ($truecnt,$falsecnt);
228: }
229:
230: sub displayallfoils {
231: my ($direction)=@_;
232: my $result;
233: &Apache::lonxml::debug("survey style display");
234: my @names = @{ $Apache::response::foilgroup{'names'} };
235: my $temp=0;
236: my $id=$Apache::inputtags::response['-1'];
237: my $part=$Apache::inputtags::part;
238: my $lastresponse=
239: $Apache::lonhomework::history{"resource.$part.$id.submission"};
240: if ($direction eq 'horizontal') { $result.='<table><tr>'; }
241: my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
242: if (&Apache::response::show_answer() ) {
243: foreach my $name (@names) {
244: if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {
245: if ($direction eq 'horizontal') {
246: $result.="<td>";
247: } else {
248: $result.="<br />";
249: }
250: if (defined($lastresponse{$name})) {
251: $result.='<b>';
252: }
253: $result .= $Apache::response::foilgroup{$name.'.text'};
254: if (defined($lastresponse{$name})) {
255: $result.='</b>';
256: }
257: if ($direction eq 'horizontal') { $result.="</td>"; }
258: }
259: }
260: } else {
261: foreach my $name (@names) {
262: if ($Apache::response::foilgroup{$name.'.value'} ne 'unused') {
263: if ($direction eq 'horizontal') {
264: $result.="<td>";
265: } else {
266: $result.="<br />";
267: }
268: $result .= '<label>';
269: $result.="<input type=\"radio\" name=\"HWVAL_$Apache::inputtags::response['-1']\" value=\"$temp\" ";
270: if (defined($lastresponse{$name})) { $result .= 'checked="on"'; }
271: $result .= '>'.$Apache::response::foilgroup{$name.'.text'}.
272: '</label>';
273: $temp++;
274: if ($direction eq 'horizontal') { $result.="</td>"; }
275: }
276: }
277: }
278: if ($direction eq 'horizontal') { $result.='</tr></table>'; }
279: return $result;
280: }
281:
282: sub whichfoils {
283: my ($max,$randomize)=@_;
284:
285: my @truelist;
286: my @falselist;
287: my @whichfalse =();
288: my ($truecnt,$falsecnt) = &getfoilcounts();
289: my $count=0;
290: # we will add in 1 of the true statements
291: if (($falsecnt+1)>$max) { $count=$max } else { $count=$falsecnt+1; }
292: my $answer=int(&Math::Random::random_uniform() * ($count));
293: &Apache::lonxml::debug("Count is $count, $answer is $answer");
294: my @names;
295: if ( $Apache::response::foilgroup{'names'} ) {
296: @names= @{ $Apache::response::foilgroup{'names'} };
297: }
298: if (&Apache::response::showallfoils()) {
299: @whichfalse=@names;
300: } elsif ($randomize eq 'no') {
301: &Apache::lonxml::debug("No randomization");
302: my $havetrue=0;
303: foreach my $name (@names) {
304: if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
305: if (!$havetrue ) {
306: push(@whichfalse,$name); $havetrue++; $answer=$#whichfalse;
307: }
308: } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
309: push (@whichfalse,$name);
310: } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
311: } else {
312: &Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in <foilgroup>",'<>&"'));
313: }
314: }
315: } else {
316: my $current=0;
317: &Apache::lonhomework::showhash(%Apache::response::foilgroup);
318: my (%top,%bottom);
319: #first find out where everyone wants to be
320: foreach my $name (@names) {
321: $current++;
322: if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
323: push (@truelist,$name);
324: if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {
325: $top{$name}=$current;
326: } elsif ($Apache::response::foilgroup{$name.'.location'} eq 'bottom') {
327: $bottom{$name}=$current;
328: }
329: } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'false') {
330: push (@falselist,$name);
331: if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {
332: $top{$name}=$current;
333: } elsif ($Apache::response::foilgroup{$name.'.location'} eq 'bottom') {
334: $bottom{$name}=$current;
335: }
336: } elsif ($Apache::response::foilgroup{$name.'.value'} eq 'unused') {
337: } else {
338: &Apache::lonxml::error(&HTML::Entities::encode("No valid value assigned ($Apache::response::foilgroup{$name.'.value'}) for foil $name in <foilgroup>",'<>&"'));
339: }
340: }
341: #pick a true statement
342: my $notrue=0;
343: if (scalar(@truelist) == 0) { $notrue=1; }
344: my $whichtrue = int(&Math::Random::random_uniform() * ($#truelist+1));
345: &Apache::lonxml::debug("Max is $max, From $#truelist elms, picking $whichtrue");
346: my (@toplist, @bottomlist);
347: my $topcount=0;
348: my $bottomcount=0;
349: # assign everyone to either toplist/bottomlist or whichfalse
350: # which false is randomized, toplist bottomlist are in order
351: while ((($#whichfalse+$topcount+$bottomcount) < $max-2) && ($#falselist > -1)) {
352: &Apache::lonxml::debug("Have $#whichfalse max is $max");
353: my $afalse=int(&Math::Random::random_uniform() * ($#falselist+1));
354: &Apache::lonxml::debug("From $#falselist elms, picking $afalse");
355: $afalse=splice(@falselist,$afalse,1);
356: &Apache::lonxml::debug("Picked $afalse");
357: &Apache::lonhomework::showhash(('names'=>\@names));
358: &Apache::lonhomework::showhash(%top);
359: if ($top{$afalse}) {
360: $toplist[$top{$afalse}]=$afalse;
361: $topcount++;
362: } elsif ($bottom{$afalse}) {
363: $bottomlist[$bottom{$afalse}]=$afalse;
364: $bottomcount++;
365: } else {
366: push (@whichfalse,$afalse);
367: }
368: }
369: &Apache::lonxml::debug("Answer wants $answer");
370: my $truename=$truelist[$whichtrue];
371: my $dosplice=1;
372: if ($notrue && $Apache::lonhomework::type ne 'survey') {
373: $dosplice=0;
374: &Apache::lonxml::error("There are no true statements available.<br />");
375: }
376: #insert the true statement, keeping track of where it wants to be
377: if ($Apache::response::foilgroup{$truename.'.location'} eq 'top' && $dosplice) {
378: $toplist[$top{$truename}]=$truename;
379: $answer=-1;
380: foreach my $top (reverse(@toplist)) {
381: if ($top) { $answer++;}
382: if ($top eq $truename) { last; }
383: }
384: $dosplice=0;
385: } elsif ($Apache::response::foilgroup{$truename.'.location'} eq 'bottom' && $dosplice) {
386: $bottomlist[$bottom{$truename}]=$truename;
387: $answer=-1;
388: foreach my $bot (@bottomlist) {
389: if ($bot) { $answer++;}
390: if ($bot eq $truename) { last; }
391: }
392: $answer+=$topcount+$#whichfalse+1;
393: $dosplice=0;
394: } else {
395: if ($topcount>0 || $bottomcount>0) {
396: $answer = int(&Math::Random::random_uniform() * ($#whichfalse+1))
397: + $topcount;
398: }
399: }
400: &Apache::lonxml::debug("Answer now wants $answer");
401: #add the top items to the top, bottom items to the bottom
402: for (my $i=0;$i<=$#toplist;$i++) {
403: if ($toplist[$i]) { unshift(@whichfalse,$toplist[$i]) }
404: }
405: for (my $i=0;$i<=$#bottomlist;$i++) {
406: if ($bottomlist[$i]) { push(@whichfalse,$bottomlist[$i]) }
407: }
408: #if the true statement is randomized insert it into the list
409: if ($dosplice) { splice(@whichfalse,$answer,0,$truelist[$whichtrue]); }
410: }
411: &Apache::lonxml::debug("Answer is $answer");
412: return ($answer,@whichfalse);
413: }
414:
415: sub displayfoils {
416: my ($target,$max,$randomize,$direction)=@_;
417: my $result;
418:
419: my ($answer,@whichfoils)=&whichfoils($max,$randomize);
420: my $part=$Apache::inputtags::part;
421: my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
422: if ( ($target ne 'tex') &&
423: &Apache::response::show_answer() ) {
424: if ($direction eq 'horizontal') {
425: if ($target ne 'tex') {
426: $result.='<table><tr>';
427: }
428: }
429: foreach my $name (@whichfoils) {
430: if ($direction eq 'horizontal') {
431: if ($target ne 'tex') { $result.='<td>'; }
432: }
433: if ($target ne 'tex') {
434: $result.="<br />";
435: } else {
436: $result.='\item \vskip -2 mm ';
437: }
438: if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
439: if ($target ne 'tex') { $result.='Correct:<b>'; } else { $result.='Correct: \textbf{';}
440: } else {
441: $result.='Incorrect:';
442: }
443: if ($target eq 'web') { $result.="<label>"; }
444: $result.=$Apache::response::foilgroup{$name.'.text'};
445: if ($target eq 'web') { $result.="</label>"; }
446: if ($Apache::response::foilgroup{$name.'.value'} eq 'true') {
447: if ($target ne 'tex') { $result.='</b>';} else {$result.='}';}
448: }
449: if ($direction eq 'horizontal') {
450: if ($target ne 'tex') { $result.='</td>'; }
451: }
452: }
453: if ($direction eq 'horizontal') {
454: if ($target ne 'tex') {
455: $result.='</tr></table>';
456: }
457: }
458: } else {
459: my @alphabet = ('A'..'Z');
460: my $i = 0;
461: my $temp=0;
462: my $id=$Apache::inputtags::response['-1'];
463: my $part=$Apache::inputtags::part;
464: my $lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
465: my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
466: if ($target ne 'tex' && $direction eq 'horizontal') {
467: $result.="<table><tr>";
468: }
469: foreach my $name (@whichfoils) {
470: if ($target ne 'tex') {
471: if ($direction eq 'horizontal') {
472: $result.="<td>";
473: } else {
474: $result.="<br />";
475: }
476: }
477: if ($target ne 'tex') {
478: $result.= '<label>';
479: $result.="<input type=\"radio\" name=\"HWVAL_$Apache::inputtags::response['-1']\" value=\"$temp\" ";
480: if (defined($lastresponse{$name})) { $result .= 'checked="on"'; }
481: $result .= '>'.$Apache::response::foilgroup{$name.'.text'}."</label>";
482: } else {
483: if ($Apache::lonhomework::type eq 'exam') {
484: $result .= '{\small \textbf{'.$alphabet[$i].'}}$\bigcirc$'.$Apache::response::foilgroup{$name.'.text'}.'\\\\'; #' stupid emacs
485: $i++;
486: } else {
487: $result .= '\vspace*{-2 mm}\item '.$Apache::response::foilgroup{$name.'.text'};
488: }
489: }
490: if ($target ne 'tex' && $direction eq 'horizontal') {
491: $result.="</td>";
492: }
493: $temp++;
494: }
495: if ($target ne 'tex' && $direction eq 'horizontal') {
496: $result.="</tr></table>";
497: }
498: }
499: if ($target ne 'tex') { if ($direction ne 'horizontal') { $result.="<br />";} } else { $result.='\vskip 0 mm '; }
500: return $result;
501: }
502:
503: sub displayallanswers {
504: my @names = @{ $Apache::response::foilgroup{'names'} };
505:
506: my $result=&Apache::response::answer_header('radiobuttonresponse');
507: foreach my $name (@names) {
508: $result.=&Apache::response::answer_part('radiobuttonresponse',
509: $Apache::response::foilgroup{$name.'.value'});
510: }
511: $result.=&Apache::response::answer_footer('radiobuttonresponse');
512: return $result;
513: }
514:
515: sub displayanswers {
516: my ($max,$randomize)=@_;
517: my ($answer,@whichopt) = &whichfoils($max,$randomize);
518: my $result=&Apache::response::answer_header('radiobuttonresponse');
519: foreach my $name (@whichopt) {
520: $result.=&Apache::response::answer_part('radiobuttonresponse',
521: $Apache::response::foilgroup{$name.'.value'})
522: }
523: $result.=&Apache::response::answer_footer('radiobuttonresponse');
524: return $result;
525: }
526:
527: sub start_conceptgroup {
528: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
529: $Apache::radiobuttonresponse::conceptgroup=1;
530: %Apache::response::conceptgroup=();
531: my $result;
532: if ($target eq 'edit') {
533: $result.=&Apache::edit::tag_start($target,$token);
534: $result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
535: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
536: } elsif ($target eq 'modified') {
537: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
538: $safeeval,'concept');
539: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
540: }
541: return $result;
542: }
543:
544: sub end_conceptgroup {
545: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
546: $Apache::radiobuttonresponse::conceptgroup=0;
547: my $result;
548: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
549: $target eq 'tex' || $target eq 'analyze') {
550: &Apache::response::pick_foil_for_concept($target,
551: ['value','text','location'],
552: \%Apache::hint::radiobutton,
553: $parstack,$safeeval);
554: } elsif ($target eq 'edit') {
555: $result=&Apache::edit::end_table();
556: }
557: return $result;
558: }
559:
560: sub insert_conceptgroup {
561: my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
562: return $result;
563: }
564:
565: sub start_foil {
566: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
567: my $result='';
568: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
569: &Apache::lonxml::startredirection;
570: if ($target eq 'analyze') {
571: &Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
572: }
573: } elsif ($target eq 'edit') {
574: $result=&Apache::edit::tag_start($target,$token);
575: $result.=&Apache::edit::text_arg('Name:','name',$token);
576: $result.=&Apache::edit::select_or_text_arg('Correct Option:','value',
577: ['unused','true','false'],
578: $token);
579: my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
580: $safeeval,'-3');
581: if ($randomize ne 'no') {
582: $result.=&Apache::edit::select_arg('Location:','location',
583: ['random','top','bottom'],$token);
584: }
585: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
586: } elsif ($target eq 'modified') {
587: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
588: $safeeval,'value','name',
589: 'location');
590: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
591: }
592: return $result;
593: }
594:
595: sub end_foil {
596: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
597: my $text='';
598: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
599: $text=&Apache::lonxml::endredirection;
600: }
601: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
602: || $target eq 'tex' || $target eq 'analyze') {
603: my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
604: if ($value ne 'unused') {
605: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
606: if (!$name) { $name=$Apache::lonxml::curdepth; }
607: if (defined($Apache::response::foilnames{$name})) {
608: &Apache::lonxml::error(&mt("Foil name <b><tt>[_1]</tt></b> appears more than once. Foil names need to be unique.",$name));
609: }
610: $Apache::response::foilnames{$name}++;
611: my $location =&Apache::lonxml::get_param('location',$parstack,
612: $safeeval);
613: if ( $Apache::radiobuttonresponse::conceptgroup
614: && !&Apache::response::showallfoils() ) {
615: push @{ $Apache::response::conceptgroup{'names'} }, $name;
616: $Apache::response::conceptgroup{"$name.value"} = $value;
617: $Apache::response::conceptgroup{"$name.text"} = $text;
618: $Apache::response::conceptgroup{"$name.location"} = $location;
619: } else {
620: push @{ $Apache::response::foilgroup{'names'} }, $name;
621: $Apache::response::foilgroup{"$name.value"} = $value;
622: $Apache::response::foilgroup{"$name.text"} = $text;
623: $Apache::response::foilgroup{"$name.location"} = $location;
624: }
625: }
626: }
627: return '';
628: }
629:
630: sub insert_foil {
631: return '
632: <foil name="" value="unused">
633: <startouttext />
634: <endouttext />
635: </foil>';
636: }
637: 1;
638: __END__
639:
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