1: # LearningOnline Network with CAPA
2: # option list style responses
3: #
4: # $Id: optionresponse.pm,v 1.146 2007/10/08 09:22:50 foxr 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: push (@{ $Apache::lonhomeowrk::analyze{"$part_id.bubble_lines"} }, 1);
75:
76: }
77: return $result;
78: }
79:
80: sub end_optionresponse {
81: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
82: &Apache::response::end_response;
83: pop @Apache::lonxml::namespace;
84: &Apache::lonxml::deregister('Apache::optionresponse',('foilgroup','foil','conceptgroup','drawoptionlist'));
85: my $result;
86: if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
87: undef(%Apache::response::foilnames);
88: return $result;
89: }
90:
91: %Apache::response::foilgroup=();
92: sub start_foilgroup {
93: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
94:
95: my $result='';
96: %Apache::response::foilgroup=();
97: $Apache::optionresponse::conceptgroup=0;
98: &Apache::response::pushrandomnumber();
99: if ($target eq 'edit') {
100: my $optionlist="<option></option>\n";
101: my $option;
102: my @opt;
103: eval '@opt ='. &Apache::lonxml::get_param('options',$parstack,$safeeval);
104: my $count=1;
105: foreach $option (@opt) {
106: $optionlist.="<option value=\"$count\">$option</option>\n";
107: $count++;
108: }
109: my $insertlist=&Apache::edit::insertlist($target,$token);
110: $result.=&Apache::edit::start_table($token);
111: $result.= (<<ENDTABLE);
112: <tr><td>Select Options</td>
113: <td>
114: Add new Option: <input type="text" name="$Apache::lonxml::curdepth.options" />
115: </td>
116: <td>Delete an Option:
117: <select name="$Apache::lonxml::curdepth.deleteopt">$optionlist</select>
118: ENDTABLE
119: $result.= &Apache::edit::checked_arg('Print options:','texoptions',
120: [ ['nochoice','Don\'t show option list'] ]
121: ,$token);
122: $result.= &Apache::edit::end_row();
123: $result.= &Apache::edit::start_spanning_row();
124: $result.= $insertlist.'<br />';
125: }
126: if ($target eq 'modified') {
127: my @options;
128: my $optchanged=0;
129: eval '@options ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
130: if ($env{"form.$Apache::lonxml::curdepth.deleteopt"}) {
131: my $delopt=$env{"form.$Apache::lonxml::curdepth.deleteopt"};
132: &Apache::lonxml::debug("Deleting :$delopt:");
133: splice(@options,$delopt-1,1);
134: $optchanged=1;
135: }
136: if ($env{"form.$Apache::lonxml::curdepth.options"}) {
137: my $newopt = $env{"form.$Apache::lonxml::curdepth.options"};
138: if ($options[0]) {
139: push(@options,$newopt);
140: } else {
141: $options[0]=$newopt;
142: }
143: $optchanged=1;
144: }
145: my $rebuildtag = &Apache::edit::get_new_args($token,$parstack,$safeeval,
146: ('texoptions'));
147: if ($optchanged || $rebuildtag ) {
148: $result = "<foilgroup options=\"(";
149: foreach my $option (@options) {
150: $option=~s/\'/\\\'/g;
151: &Apache::lonxml::debug("adding option :$option:");
152: $result .="'".$option."',";
153: }
154: chop $result;
155: $result.=')" ';
156: $result .= 'texoptions="'.$token->[2]{'texoptions'}.'" ';
157: $result .= '>';
158: } # else nothing changed so just use the default mechanism
159: }
160: if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
161: $result .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
162: \begin{enumerate} ';
163: }
164: return $result;
165: }
166:
167: sub end_foilgroup {
168: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
169:
170: my $result;
171: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
172: $target eq 'tex' || $target eq 'analyze') {
173: my $tex_option_switch=&Apache::lonxml::get_param('texoptions',$parstack,$safeeval);
174: my $name;
175: my @opt;
176: eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
177: &Apache::lonxml::debug("options:".join(':',@opt));
178:
179: my $TeXlayout=&Apache::lonxml::get_param('TeXlayout',$parstack,$safeeval,
180: -2,0);
181: if ($target eq 'tex' && $tex_option_switch eq 'nochoice') {@opt=();}
182: &Apache::lonxml::debug("Options are $#opt");
183: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
184: my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
185: $safeeval,'-2');
186: if ($target eq 'web' || $target eq 'tex') {
187: $result.=&displayfoils($target,$max,$randomize,$TeXlayout,@opt);
188: $Apache::lonxml::post_evaluate=0;
189: } elsif ( $target eq 'answer') {
190: $result.=&displayanswers($max,$randomize,@opt);
191:
192: } elsif ( $target eq 'analyze') {
193: my @shown = &whichfoils($max,$randomize);
194: &Apache::response::analyze_store_foilgroup(\@shown,
195: ['text','value','location']);
196: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
197: push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
198: } elsif ( $target eq 'grade') {
199: if ( &Apache::response::submitted()) {
200: my @whichopt = &whichfoils($max,$randomize);
201: my $temp=1;my $name;
202: my %responsehash;
203: my %grade;
204: my $right=0;
205: my $wrong=0;
206: my $ignored=0;
207: foreach $name (@whichopt) {
208: my $response=&Apache::response::getresponse($temp);
209: if ($env{'form.submitted'} eq 'scantron' && $response=~/\S/) {
210: $response = $opt[$response];
211: }
212: if ( $response =~ /[^\s]/) {
213: $responsehash{$name}=$response;
214: my $value=$Apache::response::foilgroup{$name.'.value'};
215: &Apache::lonxml::debug("submitted a $response for $value<br />\n");
216: if ($value eq $response) {
217: $grade{$name}='1'; $right++;
218: } else {
219: $grade{$name}='0'; $wrong++;
220: }
221: } else {
222: $ignored++;
223: }
224: $temp++;
225: }
226: my $part=$Apache::inputtags::part;
227: my $id = $Apache::inputtags::response['-1'];
228: my $responsestr=&Apache::lonnet::hash2str(%responsehash);
229: my $gradestr =&Apache::lonnet::hash2str(%grade);
230: my %previous=&Apache::response::check_for_previous($responsestr,
231: $part,$id);
232: &Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored");
233: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
234: $responsestr;
235: $Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
236:
237: if ($Apache::lonhomework::type eq 'survey') {
238: if ($ignored == 0) {
239: my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED';
240: &Apache::response::handle_previous(\%previous,$ad);
241: } elsif ($wrong==0 && $right==0) {
242: } else {
243: my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='MISSING_ANSWER';
244: &Apache::response::handle_previous(\%previous,$ad);
245: }
246: } elsif (!$Apache::lonhomework::scantronmode) {
247: my $ad;
248: if ($wrong==0 && $ignored==0) {
249: $ad='EXACT_ANS';
250: } elsif ($wrong==0 && $right==0) {
251: #nothing submitted
252: } else {
253: if ($ignored==0) {
254: $ad='INCORRECT';
255: } else {
256: $ad='MISSING_ANSWER';
257: }
258: }
259: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
260: &Apache::response::handle_previous(\%previous,$ad);
261: } else {
262: my $ad;
263: if ($wrong==0 && $right==0) {
264: #nothing submitted only assign a score if we
265: #need to override a previous grade
266: if (defined($Apache::lonhomework::history{"resource.$part.$id.awarddetail"})) {
267: $ad='ASSIGNED_SCORE';
268: }
269: } else {
270: $ad='ASSIGNED_SCORE';
271: }
272: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
273: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=
274: $right/(scalar(@whichopt));
275: $Apache::lonhomework::results{"resource.$part.$id.numfoils"}=
276: scalar(@whichopt);
277: }
278: }
279: }
280: &Apache::lonxml::increment_counter(&getfoilcounts($max),
281: $Apache::inputtags::part);
282: if ($target eq 'analyze') {
283: &Apache::lonhomework::set_bubble_lines();
284: }
285:
286: } elsif ($target eq 'edit') {
287: $result.=&Apache::edit::end_table();
288: }
289: if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
290: $result .= '\end{enumerate}';
291: }
292: &Apache::response::poprandomnumber();
293: return $result;
294: }
295:
296: sub getfoilcounts {
297: my ($max)=@_;
298: # +1 since instructors will count from 1
299: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
300: if (&Apache::response::showallfoils()) { $max=$count; }
301: if ($count>$max) { $count=$max }
302: &Apache::lonxml::debug("Count is $count from $max");
303: return $count;
304: }
305:
306: sub whichfoils {
307: my ($max,$randomize)=@_;
308: return &Apache::response::whichorder($max,$randomize,
309: &Apache::response::showallfoils(),
310: \%Apache::response::foilgroup);
311: }
312:
313: sub displayanswers {
314: my ($max,$randomize,@opt)=@_;
315: if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
316: my @names = @{ $Apache::response::foilgroup{'names'} };
317: my @whichopt = &whichfoils($max,$randomize);
318: my $result;
319: if ($Apache::lonhomework::type eq 'exam') {
320: my $i = 0;
321: my %opt = map { ($_,$i++) } @opt;
322:
323: $i = 0;
324: my @alphabet = ('A'..'Z');
325: foreach my $name (@whichopt) {
326: $result.=&Apache::response::answer_header('optionresponse',$i++);
327: $result.=&Apache::response::answer_part('optionresponse',
328: $alphabet[$opt{$Apache::response::foilgroup{$name.'.value'}}]);
329: $result.=&Apache::response::answer_part('optionresponse',
330: $Apache::response::foilgroup{$name.'.value'});
331: $result.=&Apache::response::answer_footer('optionresponse');
332: }
333: } else {
334: $result=&Apache::response::answer_header('optionresponse');
335: foreach my $name (@whichopt) {
336: $result.=&Apache::response::answer_part('optionresponse',
337: $Apache::response::foilgroup{$name.'.value'});
338: }
339: $result.=&Apache::response::answer_footer('optionresponse');
340: }
341: return $result;
342: }
343:
344: sub check_for_invalid {
345: my ($names,$options) = @_;
346: my %bad_names;
347: foreach my $name (@{ $names }) {
348: my $value=$Apache::response::foilgroup{$name.'.value'};
349: my $found=0;
350: foreach my $option (@{ $options }) {
351: if ($value eq $option) { $found=1; }
352: }
353: if (!$found) { $bad_names{$name}=$value; }
354: }
355: if (%bad_names) {
356: my $error=&mt('The question can not be gotten correct, '.
357: 'the following foils in the <optionresponse> '.
358: 'have invalid correct options').' <br /><tt>'.
359: join('<br />',(map { $_=&mt("[_1] with value [_2]",$_,$bad_names{$_}) } (keys(%bad_names)))).
360: "</tt>";
361: &Apache::lonxml::error($error);
362: }
363: }
364:
365: sub displayfoils {
366: my ($target,$max,$randomize,$TeXlayout,@opt)=@_;
367: if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
368: my @names = @{ $Apache::response::foilgroup{'names'} };
369: my @truelist;
370: my @falselist;
371: my $result;
372: my $name;
373: my $displayoptionintex=1;
374: my @alphabet = ('A'..'Z');
375: my @whichopt = &whichfoils($max,$randomize);
376: &check_for_invalid(\@whichopt,\@opt);
377: my $part=$Apache::inputtags::part;
378: my $id=$Apache::inputtags::response[-1];
379: my $break;
380: my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
381: if ( ($target ne 'tex') &&
382: &Apache::response::show_answer() ) {
383: my $temp=1;
384: foreach $name (@whichopt) {
385: my $text=$Apache::response::foilgroup{$name.'.text'};
386: my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
387: my $lastopt=$lastresponse{$name};
388: if ($text!~/^\s*$/) { $break='<br />'; }
389: $result.=$break;
390: if ($target eq 'web') {
391: my $value=$Apache::response::foilgroup{$name.'.value'};
392: if (!($text=~s|<drawoptionlist\s*/>|$value|)) {
393: if ($text=~/^\s*$/) {
394: $text=$value.$text;
395: } else {
396: $text='<b>'.$value.':</b> '.$text;
397: }
398: } else {
399: $text='•'.$text;
400: }
401: $result.=$text."\n";
402: }
403: if ($Apache::lonhomework::type eq 'exam') {
404: $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
405: }
406: $temp++;
407: }
408: } else {
409: my $temp=1;
410: my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
411: my $internal_counter=$Apache::lonxml::counter;
412: foreach $name (@whichopt) {
413: my $text=$Apache::response::foilgroup{$name.'.text'};
414: if ($text!~/^\s*$/) {
415: if ($target eq 'tex') {
416: $break='\vskip 0 mm ';
417: } elsif ($target eq 'web') {
418: $break='<br />';
419: }
420: }
421: my $lastopt=$lastresponse{$name};
422: my $optionlist="<option></option>\n";
423: foreach my $option (@opt) {
424: my $escopt=&HTML::Entities::encode($option,'\'"&<>');
425: if ($option eq $lastopt) {
426: $optionlist.="<option value='".$escopt."' selected=\"selected\">$option</option>\n";
427: } else {
428: $optionlist.="<option value='".$escopt."'>$option</option>\n";
429: }
430: }
431: if ($target ne 'tex') {
432: if ($Apache::lonhomework::type ne 'exam') {
433: $optionlist='<select onchange="javascript:setSubmittedPart(\''.
434: $part.'\');" name="HWVAL_'.
435: $Apache::inputtags::response['-1'].':'.$temp.'">'.
436: $optionlist."</select>\n";
437: } else {
438: $optionlist='<u>'.(' 'x10).'</u>';
439: }
440: if ($text=~s|<drawoptionlist\s*/>|$optionlist|) {
441: if ($Apache::lonhomework::type ne 'exam') {
442: $text='•'.$text;
443: }
444: } else {
445: if ($Apache::lonhomework::type ne 'exam') {
446: $text=$optionlist.$text;
447: }
448: }
449: $result.=$break.$text."\n";
450: if ($Apache::lonhomework::type eq 'exam') {
451: $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
452: }
453: $temp++;
454: } else {
455: my $texoptionlist='';
456: if ($displayoptionintex &&
457: $Apache::lonhomework::type ne 'exam') {
458: $texoptionlist = &optionlist_correction($TeXlayout,@opt);
459: }
460: if ($text=~/<drawoptionlist\s*\/>/) {
461: $text=~s|<drawoptionlist\s*\/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |g;
462: }
463:
464: if ($text=~m/\\item /) {
465: if ($Apache::lonhomework::type eq 'exam') {
466: $text=~s/\\item/\\vskip 2 mm/;
467: }
468: $result.= $texoptionlist.$text;
469: } else {
470: if ($Apache::lonhomework::type eq 'exam') {
471: $result.= $texoptionlist.' '.$text;
472: } else {
473: if ($text=~/\S/) {$result.= $texoptionlist.'\vspace*{-2 mm}\item '.$text;} else {$result.= $texoptionlist;}
474: }
475: }
476: if ($Apache::lonhomework::type eq 'exam') {
477: $result.='\vskip -1 mm\noindent\begin{enumerate}\item[\textbf{'.
478: $internal_counter.'}.]'.&bubbles(\@alphabet,\@opt).
479: '\end{enumerate} \vskip -8 mm \strut ';
480: $internal_counter++;
481: }
482: $displayoptionintex=0;
483: }
484: }
485: }
486:
487: if ($target eq 'web') {
488: &Apache::response::setup_prior_tries_hash(\&Apache::rankresponse::format_prior_answer,
489: [\@whichopt,
490: 'submissiongrading']);
491: }
492:
493: if ($target ne 'tex') {
494: return $result.$break;
495: } else {
496: return $result;
497: }
498: }
499:
500:
501: sub optionlist_correction {
502: my ($TeXlayout,@options) = @_;
503: my $texoptionlist='\\item [] Choices: ';
504: if ($TeXlayout eq 'vertical') {$texoptionlist='\\item []';}
505: if (scalar(@options) > 0) {
506: foreach my $option (@options) {
507: $texoptionlist.='{\bf '.
508: &Apache::lonxml::latex_special_symbols($option).
509: '}';
510: if ($TeXlayout eq 'vertical') {
511: $texoptionlist.=' \vskip 0 mm ',
512: } else {
513: $texoptionlist.=', ';
514: }
515: }
516: $texoptionlist=~s/, $//;
517: if ($TeXlayout ne 'vertical') {$texoptionlist.='.';}
518: } else {
519: if ($TeXlayout ne 'vertical') {$texoptionlist='\\item [] \\vskip -5 mm';}
520: }
521: return $texoptionlist;
522: }
523:
524:
525: sub webbubbles {
526: my ($ropt,$ralphabet,$temp,$lastopt)=@_;
527: my @opt=@$ropt;
528: my @alphabet=@$ralphabet;
529: my $result='';
530: my $number_of_bubbles = $#opt + 1;
531: $result.= '<table border="1"><tr>';
532: for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
533: my $checked='';
534: if ($lastopt eq $opt[$ind]) {
535: $checked=' checked="on" ';
536: }
537: $result.='<td><input type="radio" name="HWVAL_'.
538: $Apache::inputtags::response['-1'].':'.$temp.
539: '" value="'.$opt[$ind].'" '.$checked.' />';
540: if ($alphabet[$ind]) {
541: $result.=$alphabet[$ind].': ';
542: }
543: $result.=$opt[$ind].'</td>';
544: }
545: $result.='</tr></table>';
546: return $result;
547: }
548:
549:
550: sub bubbles {
551: my ($ralphabet,$ropt,$response, $max_width) = @_;
552: my @alphabet = @$ralphabet;
553: my @opt = @$ropt;
554: my ($result,$head,$line) =('','','');
555: my $number_of_bubbles = $#opt + 1;
556: my $current_length = 0;
557: my $textwidth;
558: if (defined($max_width)) {
559: $textwidth=$max_width;
560: &Apache::lonxml::debug("Max width passed in: $max_width");
561: } elsif ($env{'form.textwidth'} ne '') {
562: $env{'form.textwidth'}=~/(\d+)/;
563: $textwidth=$1;
564: &Apache::lonxml::debug("Max width from form: $textwidth");
565: } else {
566: $env{'form.textwidth'}=~/(\d*)\.?(\d*)/;
567: $textwidth=$1.'.'.$2;
568: &Apache::lonxml::debug("Max width defaults? $textwidth");
569: }
570: &Apache::lonxml::debug("Final maxwidth: $textwidth");
571: for (my $ind=0;$ind<=$number_of_bubbles;$ind++) {
572: my $leftmargin;
573: $opt[$ind]=&Apache::lonxml::latex_special_symbols($opt[$ind]);
574: if ($response eq 'rankresponse') {$opt[$ind]='Rank '.$opt[$ind];}
575: if ($ind==0) {$leftmargin=6;} else {$leftmargin=10;}
576:
577: $current_length += (length($opt[$ind])+length($alphabet[$ind])+4)*2;
578: if ($current_length<($textwidth-$leftmargin) and $ind!=$number_of_bubbles) {
579: $line.='\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
580: $head.='lr';
581: } else {
582: $line=~s/\&\s*$//;
583: $result.='\vskip -2 mm\noindent\setlength{\tabcolsep}{2 mm}\begin{tabular}{'.$head.'}'.$line.'\\\\\end{tabular}\vskip 0 mm';
584: $line = '\hskip -1 mm {\small \textbf{'.$alphabet[$ind].'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';;
585: $head ='lr';
586: $current_length = (length($opt[$ind])+length($alphabet[$ind]))*2;
587: }
588:
589: }
590: return $result;
591: }
592:
593:
594: sub start_conceptgroup {
595: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
596: $Apache::optionresponse::conceptgroup=1;
597: %Apache::response::conceptgroup=();
598: my $result;
599: if ($target eq 'edit') {
600: $result.=&Apache::edit::tag_start($target,$token,"Concept Grouped Foils");
601: $result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
602: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
603: }
604: if ($target eq 'modified') {
605: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'concept');
606: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
607: }
608: return $result;
609: }
610:
611: sub end_conceptgroup {
612: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
613: $Apache::optionresponse::conceptgroup=0;
614: my $result='';
615: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
616: $target eq 'tex' || $target eq 'analyze') {
617: #if not there aren't any foils to display and thus no question
618: &Apache::response::pick_foil_for_concept($target,
619: ['value','text','location'],
620: \%Apache::hint::option,
621: $parstack,$safeeval);
622: } elsif ($target eq 'edit') {
623: $result=&Apache::edit::end_table();
624: }
625: return $result;
626: }
627:
628: sub insert_conceptgroup {
629: my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
630: return $result;
631: }
632:
633: sub start_foil {
634: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
635: my $result='';
636: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze' ) {
637: &Apache::lonxml::startredirection;
638: if ($target eq 'analyze') {
639: &Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
640: }
641: } elsif ($target eq 'edit') {
642: $result=&Apache::edit::tag_start($target,$token,"Foil");
643: my $level='-2';
644: if ($$tagstack['-2'] eq 'conceptgroup') { $level = '-3'; }
645: my @opt;
646: eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval,$level);
647: $result.=&Apache::edit::text_arg('Name:','name',$token);
648: $result.= &Apache::edit::select_or_text_arg('Correct Option:','value',
649: ['unused',(@opt)],$token,'15');
650: my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
651: $safeeval,'-3');
652: if ($randomize ne 'no') {
653: $result.=&Apache::edit::select_arg('Location:','location',
654: ['random','top','bottom'],$token);
655: }
656: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
657: } elsif ($target eq 'modified') {
658: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
659: 'value','name','location');
660: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
661: }
662: return $result;
663: }
664:
665: sub end_foil {
666: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
667: my $text ='';
668: my $result = '';
669: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
670: $text=&Apache::lonxml::endredirection;
671: if ($target eq 'tex') {$text=~s/\\strut\s*\\\\\s*\\strut/\\vskip 0 mm/;}
672: if (($target eq 'tex') and ($Apache::lonhomework::type ne 'exam') and ($text=~/\S/)) {$text = '\vspace*{-2 mm}\item '.$text;}
673: }
674: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
675: || $target eq 'tex' || $target eq 'analyze') {
676: my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
677: if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
678: $text='\vskip 5mm $\triangleright$ '.$text;
679: }
680: if ($value ne 'unused') {
681: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
682: &Apache::lonxml::debug("Got a name of :$name:");
683: if ($name eq "") {
684: &Apache::lonxml::warning("Foils without names exist. This can cause problems to malfunction.");
685: $name=$Apache::lonxml::curdepth;
686: }
687: &Apache::lonxml::debug("Using a name of :$name:");
688: if (defined($Apache::response::foilnames{$name})) {
689: &Apache::lonxml::error(&mt("Foil name <b><tt>[_1]</tt></b> appears more than once. Foil names need to be unique.",$name));
690: }
691: $Apache::response::foilnames{$name}++;
692: my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
693: if ( $Apache::optionresponse::conceptgroup
694: && !&Apache::response::showallfoils() ) {
695: push @{ $Apache::response::conceptgroup{'names'} }, $name;
696: $Apache::response::conceptgroup{"$name.value"} = $value;
697: $Apache::response::conceptgroup{"$name.text"} = $text;
698: $Apache::response::conceptgroup{"$name.location"} = $location;
699: } else {
700: push @{ $Apache::response::foilgroup{'names'} }, $name;
701: $Apache::response::foilgroup{"$name.value"} = $value;
702: $Apache::response::foilgroup{"$name.text"} = $text;
703: $Apache::response::foilgroup{"$name.location"} = $location;
704: }
705: }
706: }
707: if ($target eq 'edit') {
708: $result.= &Apache::edit::tag_end($target,$token,'');
709: }
710: return $result;
711: }
712:
713: sub start_drawoptionlist {
714: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
715: if ($target !~ /^(?:meta|answer|modified|edit)$/) {
716: return $token->[4];
717: }
718: }
719:
720: sub end_drawoptionlist {
721: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
722: if ($target !~ /^(?:meta|answer|modified|edit)$/) {
723: return $token->[2];
724: }
725: }
726:
727: sub insert_foil {
728: return '
729: <foil name="" value="unused">
730: <startouttext />
731: <endouttext />
732: </foil>';
733: }
734:
735: sub insert_drawoptionlist {
736: return '<drawoptionlist />';
737: }
738: 1;
739: __END__
740:
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