1: # LearningOnline Network with CAPA
2: # option list style responses
3: #
4: # $Id: optionresponse.pm,v 1.197 2015/04/09 09:48:02 droeschl 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:
30:
31:
32:
33: package Apache::optionresponse;
34: use strict;
35: use Apache::response();
36: use Apache::lonlocal;
37: use Apache::lonnet;
38:
39: BEGIN {
40: &Apache::lonxml::register('Apache::optionresponse',('optionresponse'));
41: }
42:
43: sub start_optionresponse {
44: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
45: my $result='';
46: #when in a option response use these
47: &Apache::lonxml::register('Apache::optionresponse',('foilgroup','foil','conceptgroup','drawoptionlist'));
48: push (@Apache::lonxml::namespace,'optionresponse');
49: my $id = &Apache::response::start_response($parstack,$safeeval);
50: %Apache::hint::option=();
51: undef(%Apache::response::foilnames);
52: if ($target eq 'edit') {
53: $result.=&Apache::edit::start_table($token)
54: .'<tr><td><span class="LC_nobreak">'.&Apache::loncommon::insert_folding_button().' '
55: .&mt('Multiple Option Response Question').'</span> '
56: .&Apache::loncommon::help_open_topic('Option_Response_Problems')."</td>"
57: .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
58: .&Apache::edit::deletelist($target,$token)
59: .'</span></td>'
60: ."<td> "
61: .&Apache::edit::end_row()
62: .&Apache::edit::start_spanning_row()
63: ."\n";
64: $result.=&Apache::edit::text_arg('Max Number Of Shown Foils:','max',
65: $token,'4').
66: &Apache::edit::select_arg('Randomize Foil Order:','randomize',
67: ['yes','no'],$token).
68: &Apache::edit::select_arg('Display of options when printed','TeXlayout',
69: [['horizontal','Normal list'],
70: ['vertical','Listed in a vertical column']],$token).
71: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
72: } elsif ($target eq 'modified') {
73: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
74: $safeeval,'max','randomize',
75: 'TeXlayout');
76: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
77: } elsif ($target eq 'meta') {
78: $result=&Apache::response::meta_package_write('optionresponse');
79: } elsif ($target eq 'analyze') {
80: my $part_id="$Apache::inputtags::part.$id";
81: $Apache::lonhomework::analyze{"$part_id.type"} = 'optionresponse';
82: push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
83: push (@{ $Apache::lonhomework::analyze{"$part_id.bubble_lines"} }, 1);
84:
85: }
86: return $result;
87: }
88:
89: sub end_optionresponse {
90: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
91: &Apache::response::end_response;
92: pop @Apache::lonxml::namespace;
93: &Apache::lonxml::deregister('Apache::optionresponse',('foilgroup','foil','conceptgroup','drawoptionlist'));
94: my $result;
95: if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
96: undef(%Apache::response::foilnames);
97: return $result;
98: }
99:
100: %Apache::response::foilgroup=();
101: sub start_foilgroup {
102: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
103:
104: my $result='';
105: %Apache::response::foilgroup=();
106: $Apache::optionresponse::conceptgroup=0;
107: &Apache::response::pushrandomnumber(undef,$target);
108: if ($target eq 'edit') {
109: my $optionlist="<option></option>\n";
110: my $option;
111: my @opt;
112: my @raw_options = &Apache::lonxml::get_param('options', $parstack, $safeeval, 0, 0, 1);
113:
114:
115: eval '@opt ='. &Apache::lonxml::get_param('options',$parstack,$safeeval, 0, 0, 1);
116:
117: my $count=1;
118: foreach $option (@opt) {
119: $optionlist.="<option value=\"$count\">$option</option>\n";
120: $count++;
121: }
122: my $insertlist=&Apache::edit::insertlist($target,$token);
123: $result.=&Apache::edit::start_table($token);
124: my %lt = &Apache::lonlocal::texthash(
125: sel => 'Select Options',
126: add => 'Add new Option:',
127: del => 'Delete an Option:',
128: maxcheck => 'Enter maximum number students may check (e.g., 3)',
129: mincheck => 'Enter minimum number students need to check (e.g., 1)',
130: );
131: $result.= sprintf(<<ENDTABLE, &Apache::loncommon::insert_folding_button());
132: <tr><td>%s $lt{'sel'}</td>
133: <td>
134: $lt{'add'} <input type="text" name="$Apache::lonxml::curdepth.options" />
135: </td>
136: <td>$lt{'del'}
137: <select name="$Apache::lonxml::curdepth.deleteopt">$optionlist</select>
138: </td>
139: ENDTABLE
140: $result.= '<td>'.&Apache::edit::checked_arg('Print options:','texoptions',
141: [ ['nochoice',"Don't show option list"] ]
142: ,$token).'</td>';
143: $result.= '<td><label>'.&mt('Two-option checkboxes for:').
144: '<select name="checkboxvalue_'.$Apache::lonxml::curdepth.'">';
145: foreach $option (('',@opt)) {
146: $result.='<option value="'.$option.'"';
147: if ($option eq &Apache::lonxml::get_param('checkboxvalue',$parstack,$safeeval)) {
148: $result.=' selected="selected"';
149: }
150: $result.='>'.$option.'</option>';
151: }
152: $result.='</select></label> ';
153: my %checknumtxt = (
154: maxcheck => 'Max. boxes permitted to check',
155: mincheck => 'Min. boxes required to check',
156: );
157: my (%onclicknum,%checknum);
158: foreach my $item ('maxcheck','mincheck') {
159: $onclicknum{$item} = 'onclick="'."updateNumber('$item','$Apache::lonxml::curdepth','check','$lt{$item}');".'"';
160: $checknum{$item} = &Apache::lonxml::get_param($item,$parstack,$safeeval);
161: }
162: $result.=&Apache::edit::checked_arg('Checkbox options:','checkboxoptions',
163: [ ['nochoice',"Don't show option list"] ]
164: ,$token).' '.
165: &Apache::edit::checked_arg('','noprompt',
166: [ ['nochoice','Omit "Select all that are ... "' ] ]
167: ,$token);
168: foreach my $item ('maxcheck','mincheck') {
169: my $currnum = $checknum{$item};
170: unless ($currnum =~ /^\d+$/) {
171: $currnum = 'nochoice';
172: }
173: $result.= ' <span class="LC_nobreak">'.
174: &Apache::edit::checked_arg('',$item,[ [$currnum,$checknumtxt{$item}] ],
175: $token,$onclicknum{$item},1).' '.
176: '<span id="'.$item.'_numtext_'.$Apache::lonxml::curdepth.'">';
177: if ($checknum{$item} ne '') {
178: $result .= ': <a href="javascript:updateNumber('."'$item','$Apache::lonxml::curdepth','link','$lt{$item}'".')">'.
179: $checknum{$item}.'</a>';
180: }
181: $result .= '</span></span>';
182: }
183: $result.= '</td>';
184: $result.= &Apache::edit::end_row();
185: $result.= &Apache::edit::start_spanning_row();
186: $result.= $insertlist.'<br />';
187: }
188: if ($target eq 'modified') {
189: my @options;
190: my $optchanged=0;
191:
192:
193: eval '@options ='.&Apache::lonxml::get_param('options',$parstack,$safeeval, 0, 0, 1);
194:
195: if ($env{"form.$Apache::lonxml::curdepth.deleteopt"}) {
196: my $delopt=$env{"form.$Apache::lonxml::curdepth.deleteopt"};
197: &Apache::lonxml::debug("Deleting :$delopt:");
198: splice(@options,$delopt-1,1);
199: $optchanged=1;
200: }
201: if ($env{"form.$Apache::lonxml::curdepth.options"} ne '') {
202: my $newopt = $env{"form.$Apache::lonxml::curdepth.options"};
203: push(@options,$newopt);
204: $optchanged=1;
205: }
206: my $rebuildtag = &Apache::edit::get_new_args($token,$parstack,$safeeval,
207: 'texoptions','checkboxvalue','checkboxoptions',
208: 'noprompt','maxcheck','mincheck');
209: if ($rebuildtag) {
210: my $maxcheck = $token->[2]->{'maxcheck'};
211: my $mincheck = $token->[2]->{'mincheck'};
212: if ($mincheck =~ /D/) {
213: $token->[2]->{'mincheck'}='';
214: }
215: if ($maxcheck =~ /D/) {
216: $token->[2]->{'maxcheck'}='';
217: }
218: if (($mincheck ne '') && ($maxcheck ne '')) {
219: if ($mincheck > $maxcheck) {
220: $token->[2]->{'mincheck'}=$maxcheck;
221: }
222: }
223: }
224: if ($optchanged || $rebuildtag ) {
225: $result = "<foilgroup options=\"(";
226: foreach my $option (@options) {
227: $option=~s/\'/\\\'/g;
228: &Apache::lonxml::debug("adding option :$option:");
229: $result .="'".$option."',";
230: }
231: chop $result;
232: $result.=')" ';
233: $result .= 'texoptions="'.$token->[2]{'texoptions'}.'" ';
234: $result .= 'checkboxoptions="'.$token->[2]{'checkboxoptions'}.'" ';
235: $result .= 'checkboxvalue="'.$token->[2]{'checkboxvalue'}.'" ';
236: $result .= 'noprompt="'.$token->[2]{'noprompt'}.'" ';
237: $result .= 'maxcheck="'.$token->[2]{'maxcheck'}.'" ';
238: $result .= 'mincheck="'.$token->[2]{'mincheck'}.'"';
239: $result .= '>';
240: } # else nothing changed so just use the default mechanism
241: }
242: if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
243: if($env{'form.pdfFormFields'} ne 'yes') {
244: $result .= ' \begin{itemize} ';
245: } else {
246: $result .= "\\\\";
247: }
248: }
249: return $result;
250: }
251:
252: sub end_foilgroup {
253: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
254:
255: my $result;
256: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
257: $target eq 'tex' || $target eq 'analyze') {
258: my $tex_option_switch=&Apache::lonxml::get_param('texoptions',$parstack,$safeeval);
259: my $name;
260: my @opt;
261: eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
262: &Apache::lonxml::debug("options:".join(':',@opt));
263:
264: my $TeXlayout=&Apache::lonxml::get_param('TeXlayout',$parstack,$safeeval,
265: -2,0);
266: my $checkboxvalue=&Apache::lonxml::get_param('checkboxvalue',$parstack,$safeeval);
267: my $checkboxchoices=(&Apache::lonxml::get_param('checkboxoptions',$parstack,$safeeval) ne 'nochoice');
268: my $maxcheck=&Apache::lonxml::get_param('maxcheck', $parstack, $safeeval);
269: $maxcheck =~ s/\D+//g;
270: my $mincheck=&Apache::lonxml::get_param('mincheck', $parstack, $safeeval);
271: $mincheck =~ s/\D+//g;
272: my $noprompt=&Apache::lonxml::get_param('noprompt', $parstack, $safeeval);
273:
274: if ($target eq 'tex' && $tex_option_switch eq 'nochoice') {@opt=();}
275: &Apache::lonxml::debug("Options are $#opt");
276: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
277: my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
278: $safeeval,'-2');
279: if ($target eq 'web' || $target eq 'tex') {
280: $result.=&displayfoils($target,$max,$randomize,$TeXlayout,$checkboxvalue,$checkboxchoices,$tex_option_switch, $noprompt,$maxcheck,$mincheck, @opt);
281: $Apache::lonxml::post_evaluate=0;
282: } elsif ( $target eq 'answer') {
283: $result.=&displayanswers($max,$randomize,@opt);
284:
285: } elsif ( $target eq 'analyze') {
286: my @shown = &whichfoils($max,$randomize);
287: &Apache::response::analyze_store_foilgroup(\@shown,
288: ['text','value','location']);
289: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
290: push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
291: } elsif ( $target eq 'grade') {
292:
293: if ( &Apache::response::submitted()) {
294:
295: my @whichopt = &whichfoils($max,$randomize);
296: my $temp=1;my $name;
297: my %responsehash;
298: my %grade;
299: my $right=0;
300: my $wrong=0;
301: my $ignored=0;
302: my $checked=0;
303: my ($numrows,$bubbles_per_row);
304: if ($Apache::lonhomework::scantronmode) {
305: my $numitems = scalar(@opt);
306: ($numrows,$bubbles_per_row) =
307: &Apache::optionresponse::getnumrows($numitems);
308: }
309: if ($numrows < 1) {
310: $numrows = 1;
311: }
312: my $checkboxopt;
313: if ($checkboxvalue) {
314: $checkboxopt = &check_box_opt($target,$checkboxvalue,@opt);
315: if (($checkboxopt) && ($Apache::lonhomework::type !~ /survey/)) {
316: my $corrnumcheck = 0;
317: if (($maxcheck ne '') || ($mincheck ne '')) {
318: foreach $name (@whichopt) {
319: if ($Apache::response::foilgroup{$name.'.value'} eq $checkboxopt) {
320: $corrnumcheck ++;
321: }
322: }
323: if (($maxcheck ne '') && ($corrnumcheck > $maxcheck)) {
324: $maxcheck = $corrnumcheck;
325: }
326: if (($mincheck ne '') && ($corrnumcheck < $mincheck)) {
327: $mincheck = $corrnumcheck;
328: }
329: }
330: }
331: }
332: foreach $name (@whichopt) {
333: my $response;
334: if ($env{'form.submitted'} eq 'scantron') {
335: if ($numrows > 1) {
336: my $num = $temp;
337: my $totalnum;
338: for (my $i=0; $i<$numrows; $i++) {
339: my $item = &Apache::response::getresponse($num);
340: if ($item =~ /^\d+$/) {
341: $totalnum = $i*$bubbles_per_row + $item;
342: }
343: $num ++;
344: }
345: if ($totalnum =~ /^\d+$/) {
346: $response = $opt[$totalnum];
347: }
348: $temp += $numrows;
349: } else {
350: $response=&Apache::response::getresponse($temp);
351: if ($response=~/\S/) {
352: $response = $opt[$response];
353: }
354: $temp ++;
355: }
356: } else {
357: $response=&Apache::response::getresponse($temp);
358: $temp ++;
359: }
360: if ( $response =~ /[^\s]/) {
361: $responsehash{$name}=$response;
362: my $value=$Apache::response::foilgroup{$name.'.value'};
363: &Apache::lonxml::debug("submitted a $response for $value<br />\n");
364: if ($value eq $response) {
365: $grade{$name}='1'; $right++;
366: } else {
367: $grade{$name}='0'; $wrong++;
368: }
369: if ($checkboxopt) {
370: if ($response eq $checkboxopt) {
371: $checked++;
372: }
373: }
374: } else {
375: $ignored++;
376: }
377: }
378: my $part=$Apache::inputtags::part;
379: my $nonlenient=&grading_is_nonlenient($part);
380: my $id = $Apache::inputtags::response['-1'];
381: my $responsestr=&Apache::lonnet::hash2str(%responsehash);
382: my $gradestr =&Apache::lonnet::hash2str(%grade);
383: my %previous=&Apache::response::check_for_previous($responsestr,
384: $part,$id);
385: &Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored");
386: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
387: $responsestr;
388: $Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
389: if ($Apache::lonhomework::type eq 'randomizetry') {
390: $Apache::lonhomework::results{"resource.$part.$id.foilorder"} = &Apache::lonnet::array2str(@whichopt);
391: }
392: my $skipaward;
393: if ($checkboxvalue) {
394: if ((($maxcheck ne '') && ($checked > $maxcheck)) ||
395: (($mincheck ne '') && ($checked < $mincheck))) {
396: my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='WRONG_NUMBOXESCHECKED';
397: &Apache::response::handle_previous(\%previous,$ad);
398: $skipaward = 1;
399: }
400: }
401: unless ($skipaward) {
402: if (($Apache::lonhomework::type eq 'survey') ||
403: ($Apache::lonhomework::type eq 'surveycred') ||
404: ($Apache::lonhomework::type eq 'anonsurvey') ||
405: ($Apache::lonhomework::type eq 'anonsurveycred')) {
406: if ($ignored == 0) {
407: my $ad;
408: if ($Apache::lonhomework::type eq 'anonsurveycred') {
409: $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='ANONYMOUS_CREDIT';
410: } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
411: $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='ANONYMOUS';
412: } elsif ($Apache::lonhomework::type eq 'surveycred') {
413: $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED_CREDIT';
414: } else {
415: $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED';
416: }
417: &Apache::response::handle_previous(\%previous,$ad);
418: } elsif ($wrong==0 && $right==0) {
419: } else {
420: my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='MISSING_ANSWER';
421: &Apache::response::handle_previous(\%previous,$ad);
422: }
423: } elsif ($nonlenient) {
424: #
425: # Non-lenient mode. All right or all wrong
426: #
427: my $ad;
428: if ($wrong==0 && $ignored==0) {
429: $ad='EXACT_ANS';
430: } elsif ($wrong==0 && $right==0) {
431: #nothing submitted
432: } else {
433: if ($ignored==0) {
434: $ad='INCORRECT';
435: } else {
436: $ad='MISSING_ANSWER';
437: }
438: }
439: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
440: &Apache::response::handle_previous(\%previous,$ad);
441: } else {
442: #
443: # This is lenient mode
444: #
445: my $ad;
446: if ($wrong==0 && $right==0) {
447: #nothing submitted only assign a score if we
448: #need to override a previous grade
449: if (defined($Apache::lonhomework::history{"resource.$part.$id.awarddetail"})) {
450: $ad='ASSIGNED_SCORE';
451: }
452: } else {
453: $ad='ASSIGNED_SCORE';
454: }
455: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
456: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=
457: $right/(scalar(@whichopt));
458: $Apache::lonhomework::results{"resource.$part.$id.numfoils"}=
459: scalar(@whichopt);
460: }
461: }
462: }
463: }
464: my $part_id = $Apache::inputtags::part;
465: my $response_id = $Apache::inputtags::response[-1];
466: my ($numrows,$bubbles_per_row);
467: if (($target eq 'tex') && ($Apache::lonhomework::type eq 'exam')) {
468: ($numrows,$bubbles_per_row) =
469: &Apache::optionresponse::getnumrows(scalar(@opt));
470: }
471: if ($numrows < 1) {
472: $numrows = 1;
473: }
474: my $increment = &getfoilcounts($max) * $numrows;
475: &Apache::lonxml::increment_counter($increment,"$part_id.$response_id");
476: if ($target eq 'analyze') {
477: &Apache::lonhomework::set_bubble_lines();
478: }
479:
480: } elsif ($target eq 'edit') {
481: $result.=&Apache::edit::end_table();
482: }
483: if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
484: if($env{'form.pdfFormFields'} ne 'yes') {
485: $result .= '\end{itemize}';
486: } else {
487: $result .= "\\\\";
488: }
489: }
490: &Apache::response::poprandomnumber();
491: return $result;
492: }
493:
494: sub grading_is_nonlenient {
495: my ($part) = @_;
496: # Web mode: we are non-lenient unless told otherwise
497: my $defaultparm = 'off';
498: my $nonlenient = 0;
499: # Grading a bubblesheet exam: we are grading lenient unless told otherwise
500: if ($Apache::lonhomework::scantronmode) {
501: $defaultparm = 'on';
502: $nonlenient = 1;
503: }
504: my $lenientparm =
505: &Apache::response::get_response_param($part,'lenient',$defaultparm);
506: if ($lenientparm=~/^0|off|no$/i) {
507: $nonlenient = 1;
508: } elsif ($lenientparm=~/^1|on|yes$/i) {
509: $nonlenient = 0;
510: }
511: return $nonlenient;
512: }
513:
514: sub getfoilcounts {
515: my ($max)=@_;
516: # +1 since instructors will count from 1
517: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
518: if (&Apache::response::showallfoils()) { $max=$count; }
519: if ($count>$max) { $count=$max }
520: &Apache::lonxml::debug("Count is $count from $max");
521: return $count;
522: }
523:
524: sub whichfoils {
525: my ($max,$randomize)=@_;
526: return &Apache::response::whichorder($max,$randomize,
527: &Apache::response::showallfoils(),
528: \%Apache::response::foilgroup);
529: }
530:
531: sub displayanswers {
532: my ($max,$randomize,@opt)=@_;
533: my @names;
534: if (ref($Apache::response::foilgroup{'names'}) eq 'ARRAY') {
535: @names = @{ $Apache::response::foilgroup{'names'} };
536: }
537: return if (!@names);
538: my @whichopt = &whichfoils($max,$randomize);
539: my $result;
540: if ($Apache::lonhomework::type eq 'exam') {
541: my $i = 0;
542: my %opt = map { ($_,$i++) } @opt;
543:
544: $i = 0;
545: my @alphabet = ('A'..'Z');
546: foreach my $name (@whichopt) {
547: $result.=&Apache::response::answer_header('optionresponse',$i++);
548: $result.=&Apache::response::answer_part('optionresponse',
549: $alphabet[$opt{$Apache::response::foilgroup{$name.'.value'}}]);
550: $result.=&Apache::response::answer_part('optionresponse',
551: $Apache::response::foilgroup{$name.'.value'});
552: $result.=&Apache::response::answer_footer('optionresponse');
553: }
554: } else {
555: $result=&Apache::response::answer_header('optionresponse');
556: foreach my $name (@whichopt) {
557: $result.=&Apache::response::answer_part('optionresponse',
558: $Apache::response::foilgroup{$name.'.value'});
559: }
560: $result.=&Apache::response::answer_footer('optionresponse');
561: }
562: return $result;
563: }
564:
565: sub check_box_opt {
566: my ($target,$checkboxvalue,@opt)=@_;
567: # Check if we are in checkbox mode: checkboxvalue specified, on web, only two options.
568: # If so, return "checked" value
569: if ($#opt!=1) { return ''; }
570: unless (($target eq 'web') || ($target eq 'grade')) { return ''; }
571: return $checkboxvalue;
572: }
573:
574: sub check_for_invalid {
575: my ($names,$options) = @_;
576: my %bad_names;
577: foreach my $name (@{ $names }) {
578: my $value=$Apache::response::foilgroup{$name.'.value'};
579: my $found=0;
580: foreach my $option (@{ $options }) {
581: if ($value eq $option) { $found=1; }
582: }
583: if (!$found) { $bad_names{$name}=$value; }
584: }
585: if (%bad_names) {
586: my $error=&mt('The question can not be gotten correct, '.
587: 'the following foils in the <optionresponse> '.
588: 'have invalid correct options').' <br /><tt>'.
589: join('<br />',(map { $_=&mt("[_1] with value [_2]",$_,$bad_names{$_}) } (keys(%bad_names)))).
590: "</tt>";
591: &Apache::lonxml::error($error);
592: }
593: }
594:
595: sub displayfoils {
596: my ($target,$max,$randomize,$TeXlayout,$checkboxvalue,$checkboxchoices,
597: $tex_option_switch, $no_tfprompt, $maxcheck, $mincheck, @opt)=@_;
598: my @names;
599: if (ref($Apache::response::foilgroup{'names'}) eq 'ARRAY') {
600: @names = @{ $Apache::response::foilgroup{'names'} };
601: }
602: unless (@names > 0) { return;}
603: my @truelist;
604: my @falselist;
605: my $result;
606: my $name;
607: my $displayoptionintex=1;
608: my @alphabet = ('A'..'Z');
609: my @whichopt = &whichfoils($max,$randomize);
610: unless (($target eq 'tex') && ($tex_option_switch eq 'nochoice')) {
611: &check_for_invalid(\@whichopt,\@opt);
612: }
613: my $part=$Apache::inputtags::part;
614: my $id=$Apache::inputtags::response[-1];
615: my $break;
616: if ( ($target ne 'tex') &&
617: &Apache::response::show_answer() ) {
618: my $temp=1;
619: foreach $name (@whichopt) {
620: my $text=$Apache::response::foilgroup{$name.'.text'};
621: my $lastresp;
622: if ((($env{'form.grade_username'} eq '') && ($env{'form.grade_domain'} eq '')) ||
623: (($env{'form.grade_username'} eq $env{'user.name'}) &&
624: ($env{'form.grade_domain'} eq $env{'user.domain'}))) {
625: $lastresp = $Apache::lonhomework::history{"resource.$part.$id.submission"};
626: } else {
627: unless (($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') ||
628: ($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) {
629: $lastresp = $Apache::lonhomework::history{"resource.$part.$id.submission"};
630: }
631: }
632: my %lastresponse=&Apache::lonnet::str2hash($lastresp);
633: my $lastopt=$lastresponse{$name};
634: if ($text!~/^\s*$/) { $break='<br />'; }
635: $result.=$break;
636: if ($target eq 'web') {
637: my $value=$Apache::response::foilgroup{$name.'.value'};
638: if (!($text=~s|<drawoptionlist\s*/>|$value|)) {
639: if ($text=~/^\s*$/) {
640: $text=$value.$text;
641: } else {
642: $text='<b>'.$value.':</b> '.$text;
643: }
644: } else {
645: if (@whichopt > 1) {
646: $text='•'.$text;
647: }
648: }
649: $result.=$text."\n";
650: }
651: if ($Apache::lonhomework::type eq 'exam') {
652: $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
653: }
654: $temp++;
655: }
656: } else {
657: my $temp=1;
658: my %lastresponse;
659: my $newvariation;
660: if ((($Apache::lonhomework::history{"resource.$part.type"} eq 'randomizetry') ||
661: ($Apache::lonhomework::type eq 'randomizetry')) &&
662: ($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
663: if ($env{'form.'.$part.'.rndseed'} ne
664: $Apache::lonhomework::history{"resource.$part.rndseed"}) {
665: $newvariation = 1;
666: }
667: }
668: unless ($newvariation) {
669: if ((($env{'form.grade_username'} eq '') && ($env{'form.grade_domain'} eq '')) ||
670: (($env{'form.grade_username'} eq $env{'user.name'}) &&
671: ($env{'form.grade_domain'} eq $env{'user.domain'}))) {
672: %lastresponse =
673: &Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
674: } else {
675: unless (($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') ||
676: ($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) {
677: %lastresponse =
678: &Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
679: }
680: }
681: }
682: my $internal_counter=$Apache::lonxml::counter;
683: my $checkboxopt;
684: if ($target eq 'web') {
685: $checkboxopt=&check_box_opt($target,$checkboxvalue,@opt);
686: }
687: if ($checkboxopt && (!$no_tfprompt)) {
688: $result.='<br />'.
689: ($checkboxchoices?&mt('Choices: ').'<b>'.$opt[0].','.$opt[1].'</b>. ':'').
690: &mt('Select all that are [_1].','<b>'.$checkboxopt.'</b>');
691: }
692: foreach $name (@whichopt) {
693: my $text=$Apache::response::foilgroup{$name.'.text'};
694: if ($text!~/^\s*$/) {
695: if ($target eq 'tex') {
696: $break='\vskip 0 mm ';
697: } elsif ($target eq 'web') {
698: $break='<br />';
699: }
700: }
701: my $lastopt=$lastresponse{$name};
702: my $optionlist="<option></option>\n";
703:
704: if($target eq 'tex' and $env{'form.pdfFormFields'} eq 'yes'
705: && $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
706: my $fieldname = $env{'request.symb'}.'&part_'.$Apache::inputtags::part.'&optionresponse'.'&HWVAL_'.$Apache::inputtags::response['-1'].':'.$temp;
707: $optionlist = &Apache::lonxml::print_pdf_start_combobox($fieldname);
708: }
709:
710: foreach my $option (@opt) {
711: my $escopt=&HTML::Entities::encode($option,'\'"&<>');
712: if ($option eq $lastopt) {
713: if ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes'
714: && $Apache::inputtags::status[-1] eq 'CAN_ANSWER'
715: && $Apache::lonhomework::type ne 'exam') {
716: $optionlist .= &Apache::lonxml::print_pdf_add_combobox_option($option);
717: } else {
718: $optionlist.="<option value='".$escopt."' selected=\"selected\">$option</option>\n";
719: }
720: } else {
721: if ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes'
722: && $Apache::inputtags::status[-1] eq 'CAN_ANSWER'
723: && $Apache::lonhomework::type ne 'exam') {
724: $optionlist .= &Apache::lonxml::print_pdf_add_combobox_option($option);
725: } else {
726: $optionlist.="<option value='".$escopt."'>$option</option>\n";
727: }
728: }
729: }
730: if ($target ne 'tex') {
731: if ($Apache::lonhomework::type ne 'exam') {
732: # we are on the web, this is not an exam, and the problem can be answered
733: if ($checkboxopt) {
734: # generate checkboxes
735: my $fieldname=$Apache::inputtags::response['-1'].':'.$temp;
736: my $altopt=$opt[0];
737: if ($opt[0] eq $checkboxopt) {
738: $altopt=$opt[1];
739: }
740: my $defopt=$lastopt;
741: unless ($defopt) { $defopt=$altopt; }
742: my $escdefopt=&HTML::Entities::encode($defopt,'\'"&<>');
743: my $esccheckboxopt=&HTML::Entities::encode($checkboxopt,'\'"&<>');
744: my $escaltopt=&HTML::Entities::encode($altopt,'\'"&<>');
745: # checkboxopt is how the box is labelled
746: # altopt is the alternative option
747: # lastopt is what the user submitted before
748: # defopt is what the field is going to start out with: either previous choice or altopt
749: # fieldname is this input field's name after HWVAL_
750: $optionlist='<input type="hidden" name="HWVAL_'.$fieldname.'" value="'.$escdefopt.'" />'.
751: '<input type="checkbox" name="HWCHK_'.$fieldname.'" onclick="javascript:if (this.form.elements[\'HWCHK_'.
752: $fieldname.'\'].checked) { this.form.elements[\'HWVAL_'.$fieldname.'\'].value=\''.$esccheckboxopt.'\'; } else { this.form.elements[\'HWVAL_'.$fieldname.'\'].value=\''.$escaltopt.'\'; };setSubmittedPart(\''.$part.'\');"'.($defopt eq $checkboxopt?' checked="checked"':'')." />\n";
753: } else {
754: # classic selection list
755: $optionlist='<select onchange="javascript:setSubmittedPart(\''.
756: $part.'\');" name="HWVAL_'.
757: $Apache::inputtags::response['-1'].':'.$temp.'">'.
758: $optionlist."</select>\n";
759: }
760: } else {
761: $optionlist='<u>'.(' 'x10).'</u>';
762: }
763: if ($text=~s|<drawoptionlist\s*/>|$optionlist|) {
764: if ($Apache::lonhomework::type ne 'exam') {
765: if (@whichopt > 1) {
766: $text='•'.$text;
767: }
768: }
769: } else {
770: if ($Apache::lonhomework::type ne 'exam') {
771: $text=$optionlist.$text;
772: }
773: }
774: $result.=$break.$text."\n";
775: if ($Apache::lonhomework::type eq 'exam') {
776: $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
777: }
778: $temp++;
779: } else {
780: my $texoptionlist='';
781: if ($displayoptionintex &&
782: $Apache::lonhomework::type ne 'exam') {
783: $texoptionlist = &optionlist_correction($TeXlayout,@opt);
784: }
785: if ($text=~/<drawoptionlist\s*\/>/) {
786: $text=~s|<drawoptionlist\s*\/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |g;
787: }
788:
789: if ($text=~m/\\item /) {
790: if ($Apache::lonhomework::type eq 'exam') {
791: $text=~s/\\item/\\vskip 2 mm/;
792: } elsif ($env{'form.pdfFormFields'} ne 'yes') {
793: $result.= $texoptionlist.$text;
794: }
795: } else {
796: if ($Apache::lonhomework::type eq 'exam') {
797: $result.= $texoptionlist.' '.$text;
798: } elsif ($env{'form.pdfFormFields'} ne 'yes') {
799: if ($text=~/\S/) {
800: $result.= $texoptionlist.'\vspace*{-2 mm}\item '.$text;
801: } else {
802: $result.= $texoptionlist;
803: }
804: }
805: }
806: if ($Apache::lonhomework::type eq 'exam') {
807: $result.='\vskip -1 mm\noindent';
808: my ($numrows,$bubbles_per_row) = &getnumrows(scalar(@opt));
809: if ($numrows == 1) {
810: $result .= '\textbf{'.$internal_counter.'}. \vskip -3mm';
811: } else {
812: my $linetext;
813: for (my $i=0; $i<$numrows; $i++) {
814: $linetext .= $internal_counter+$i.', ';
815: }
816: $linetext =~ s/,\s$//;
817: $result .= '\small {\textbf{'.$linetext.'}} '.
818: '\hskip 2 mm {\footnotesize '.
819: &mt('(Bubble once in [_1] lines)',$numrows).
820: '} \vskip 1 mm';
821: }
822: $result.= &bubbles(\@alphabet,\@opt,undef,undef,$numrows,
823: $bubbles_per_row,$internal_counter).
824: ' \strut ';
825: $internal_counter += $numrows;
826: }
827: if ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes'
828: && $Apache::inputtags::status[-1] eq 'CAN_ANSWER'
829: && $Apache::lonhomework::type ne 'exam') {
830: $text =~ s/\\item//m;
831: $result .= " $optionlist ". &Apache::lonxml::print_pdf_end_combobox($text).'\strut \\\\';
832: $temp++;
833: }
834: $displayoptionintex=0;
835: }
836: }
837: }
838:
839: if ($target eq 'web') {
840: my $data = [\@whichopt,'submissiongrading'];
841: my $questiontype;
842: if ($Apache::lonhomework::type eq 'randomizetry') {
843: $questiontype = $Apache::lonhomework::type,
844: }
845: &Apache::response::setup_prior_tries_hash(\&Apache::rankresponse::format_prior_answer,$data,$questiontype);
846: }
847:
848: if ($target ne 'tex') {
849: return $result.$break;
850: } else {
851: return $result;
852: }
853: }
854:
855:
856: sub optionlist_correction {
857: my ($TeXlayout,@options) = @_;
858: my $texoptionlist='\\item [] '.&mt('Choices:').' ';
859: if ($TeXlayout eq 'vertical') {$texoptionlist='\\item []';}
860: if (scalar(@options) > 0) {
861: foreach my $option (@options) {
862: $texoptionlist.='{\bf '.
863: &Apache::lonxml::latex_special_symbols($option).
864: '}';
865: if ($TeXlayout eq 'vertical') {
866: $texoptionlist.=' \vskip 0 mm ',
867: } else {
868: $texoptionlist.=', ';
869: }
870: }
871: $texoptionlist=~s/, $//;
872: if ($TeXlayout ne 'vertical') {$texoptionlist.='.';}
873: } else {
874: if ($TeXlayout ne 'vertical') {$texoptionlist='\\item [] \\vskip -5 mm';}
875: }
876: return $texoptionlist;
877: }
878:
879:
880: sub webbubbles {
881: my ($ropt,$ralphabet,$temp,$lastopt)=@_;
882: my @opt=@$ropt;
883: my @alphabet=@$ralphabet;
884: my $result='';
885: my $number_of_bubbles = $#opt + 1;
886: $result.= '<table border="1"><tr>';
887: for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
888: my $checked='';
889: if ($lastopt eq $opt[$ind]) {
890: $checked=' checked="on" ';
891: }
892: $result.='<td><input type="radio" name="HWVAL_'.
893: $Apache::inputtags::response['-1'].':'.$temp.
894: '" value="'.$opt[$ind].'" '.$checked.' />';
895: if ($alphabet[$ind]) {
896: $result.=$alphabet[$ind].': ';
897: }
898: $result.=$opt[$ind].'</td>';
899: }
900: $result.='</tr></table>';
901: return $result;
902: }
903:
904:
905: sub bubbles {
906: my ($ralphabet,$ropt,$response,$max_width,$numrows,$bubbles_per_row,
907: $internal_counter) = @_;
908: my @alphabet = @$ralphabet;
909: my @opt = @$ropt;
910: my ($result,$head,$line) =('','','');
911: my $number_of_bubbles = $#opt + 1;
912: my $current_length = 0;
913: my $textwidth;
914: if (defined($max_width)) {
915: $textwidth=$max_width;
916: &Apache::lonxml::debug("Max width passed in: $max_width");
917: } elsif ($env{'form.textwidth'} ne '') {
918: $env{'form.textwidth'}=~/(\d+)/;
919: $textwidth=$1;
920: &Apache::lonxml::debug("Max width from form: $textwidth");
921: } else {
922: $env{'form.textwidth'}=~/(\d*)\.?(\d*)/;
923: $textwidth=$1.'.'.$2;
924: &Apache::lonxml::debug("Max width defaults? $textwidth");
925: }
926: &Apache::lonxml::debug("Final maxwidth: $textwidth");
927: for (my $ind=0;$ind<=$number_of_bubbles;$ind++) {
928: my $item;
929: if ($numrows > 1) {
930: my $num = $internal_counter+int($ind/$bubbles_per_row);
931: my $idx = int($ind % $bubbles_per_row);
932: $item = $num.$alphabet[$idx];
933: } else {
934: $item = $alphabet[$ind];
935: }
936: my $leftmargin;
937: $opt[$ind]=&Apache::lonxml::latex_special_symbols($opt[$ind]);
938: if ($response eq 'rankresponse') {$opt[$ind]='Rank '.$opt[$ind];}
939: if ($ind==0) {$leftmargin=6;} else {$leftmargin=10;}
940:
941: $current_length += (length($opt[$ind])+length($item)+5)*2;
942:
943: if ($current_length<($textwidth-$leftmargin) and $ind!=$number_of_bubbles) {
944:
945: $line.='\hskip 4 mm {\small \textbf{'.$item.'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
946: $head.='lr';
947: } else {
948: $line=~s/\&\s*$//;
949: $result.='\vskip -1 mm\noindent\setlength{\tabcolsep}{2 mm}\renewcommand{\arraystretch}{1.25}\begin{tabular}{'.$head.'}'.$line.'\\\\\end{tabular}\vskip 0 mm';
950: $line = '\hskip 4 mm {\small \textbf{'.$item.'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
951: $head ='lr';
952: $current_length = (length($opt[$ind])+length($item))*2;
953: }
954:
955: }
956: return $result;
957: }
958:
959: sub start_conceptgroup {
960: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
961: $Apache::optionresponse::conceptgroup=1;
962: %Apache::response::conceptgroup=();
963: my $result;
964: if ($target eq 'edit') {
965: $result.=&Apache::edit::tag_start($target,$token,"Concept Grouped Foils");
966: $result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
967: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
968: }
969: if ($target eq 'modified') {
970: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'concept');
971: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
972: }
973: return $result;
974: }
975:
976: sub end_conceptgroup {
977: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
978: $Apache::optionresponse::conceptgroup=0;
979: my $result='';
980: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
981: $target eq 'tex' || $target eq 'analyze') {
982: #if not there aren't any foils to display and thus no question
983: &Apache::response::pick_foil_for_concept($target,
984: ['value','text','location'],
985: \%Apache::hint::option,
986: $parstack,$safeeval);
987: } elsif ($target eq 'edit') {
988: $result=&Apache::edit::end_table();
989: }
990: return $result;
991: }
992:
993: sub insert_conceptgroup {
994: my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
995: return $result;
996: }
997:
998: sub start_foil {
999: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1000: my $result='';
1001: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze' ) {
1002: &Apache::lonxml::startredirection;
1003: if ($target eq 'analyze') {
1004: &Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
1005: }
1006: } elsif ($target eq 'edit') {
1007: $result=&Apache::edit::tag_start($target,$token,"Foil");
1008: my $level='-2';
1009: if ($$tagstack['-2'] eq 'conceptgroup') { $level = '-3'; }
1010: my @opt;
1011: eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval,$level);
1012: $result.=&Apache::edit::text_arg('Name:','name',$token);
1013: $result.= &Apache::edit::select_or_text_arg('Correct Option:','value',
1014: ['unused',(@opt)],$token,'15');
1015: my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
1016: $safeeval,'-3');
1017: if ($randomize ne 'no') {
1018: $result.=&Apache::edit::select_arg('Location:','location',
1019: ['random','top','bottom'],$token);
1020: }
1021: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
1022: } elsif ($target eq 'modified') {
1023: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
1024: 'value','name','location');
1025: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
1026: }
1027: return $result;
1028: }
1029:
1030: sub end_foil {
1031: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1032: my $text ='';
1033: my $result = '';
1034: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
1035: $text=&Apache::lonxml::endredirection;
1036: if ($target eq 'tex') {$text=~s/\\strut\s*\\\\\s*\\strut/\\vskip 0 mm/;}
1037: if (($target eq 'tex') and ($Apache::lonhomework::type ne 'exam') and ($text=~/\S/)) {$text = '\vspace*{-2 mm}\item '.$text;}
1038: }
1039: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
1040: || $target eq 'tex' || $target eq 'analyze') {
1041: my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
1042: if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
1043: $text='\vskip 5mm $\triangleright$ '.$text;
1044: }
1045: if ($value ne 'unused') {
1046: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
1047: &Apache::lonxml::debug("Got a name of :$name:");
1048: if ($name eq "") {
1049: &Apache::lonxml::warning(&mt('Foils without names exist. This can cause problems to malfunction.'));
1050: $name=$Apache::lonxml::curdepth;
1051: }
1052: &Apache::lonxml::debug("Using a name of :$name:");
1053: if (defined($Apache::response::foilnames{$name})) {
1054: &Apache::lonxml::error(&mt("Foil name [_1] appears more than once. Foil names need to be unique.",'<b><tt>'.$name.'</tt></b>'));
1055: }
1056: $Apache::response::foilnames{$name}++;
1057: my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
1058: if ( $Apache::optionresponse::conceptgroup
1059: && !&Apache::response::showallfoils() ) {
1060: push @{ $Apache::response::conceptgroup{'names'} }, $name;
1061: $Apache::response::conceptgroup{"$name.value"} = $value;
1062: $Apache::response::conceptgroup{"$name.text"} = $text;
1063: $Apache::response::conceptgroup{"$name.location"} = $location;
1064: } else {
1065: push @{ $Apache::response::foilgroup{'names'} }, $name;
1066: $Apache::response::foilgroup{"$name.value"} = $value;
1067: $Apache::response::foilgroup{"$name.text"} = $text;
1068: $Apache::response::foilgroup{"$name.location"} = $location;
1069: }
1070: }
1071: }
1072: if ($target eq 'edit') {
1073: $result.= &Apache::edit::tag_end($target,$token,'');
1074: }
1075: return $result;
1076: }
1077:
1078: sub start_drawoptionlist {
1079: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1080: if ($target !~ /^(?:meta|answer|modified|edit)$/) {
1081: return $token->[4];
1082: }
1083: }
1084:
1085: sub end_drawoptionlist {
1086: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
1087: if ($target !~ /^(?:meta|answer|modified|edit)$/) {
1088: return $token->[2];
1089: }
1090: }
1091:
1092: sub insert_foil {
1093: return '
1094: <foil name="" value="unused">
1095: <startouttext />
1096: <endouttext />
1097: </foil>';
1098: }
1099:
1100: sub insert_drawoptionlist {
1101: return '<drawoptionlist />';
1102: }
1103:
1104: sub getnumrows {
1105: my ($numitems) = @_;
1106: my $bubbles_per_row;
1107: my $default_numbubbles = 10;
1108: if (($env{'form.bubbles_per_row'} =~ /^\d+$/) &&
1109: ($env{'form.bubbles_per_row'} > 0)) {
1110: $bubbles_per_row = $env{'form.bubbles_per_row'};
1111: } else {
1112: $bubbles_per_row = $default_numbubbles;
1113: }
1114: my $numrows = int ($numitems/$bubbles_per_row);
1115: if (($numitems % $bubbles_per_row) != 0) {
1116: $numrows ++;
1117: }
1118: return ($numrows,$bubbles_per_row);
1119: }
1120:
1121: 1;
1122: __END__
1123:
1124: =head1 NAME
1125:
1126: Apache::optionresponse.pm;
1127:
1128: =head1 SYNOPSIS
1129:
1130: Handles tags associated with showing a list of
1131: options.
1132:
1133: This is part of the LearningOnline Network with CAPA project
1134: described at http://www.lon-capa.org.
1135:
1136: =head1 HANDLER SUBROUTINE
1137:
1138: start_optionresponse()
1139:
1140: =head1 OTHER SUBROUTINES
1141:
1142: =over
1143:
1144: =item end_optionresponse()
1145:
1146: =item start_foilgroup()
1147:
1148: =item end_foilgroup()
1149:
1150: =item getfoilcounts()
1151:
1152: =item displayanswers()
1153:
1154: =item check_for_invalid()
1155:
1156: =item displayfoils()
1157:
1158: =item optionlist_correction()
1159:
1160: =item webbubbles()
1161:
1162: =item bubbles()
1163:
1164: =item start_conceptgroup()
1165:
1166: =item end_conceptgroup()
1167:
1168: =item insert_conceptgroup()
1169:
1170: =item start_foil()
1171:
1172: =item end_foil()
1173:
1174: =item start_drawoptionlist()
1175:
1176: =item end_drawoptionlist()
1177:
1178: =item insert_foil()
1179:
1180: =item insert_drawoptionlist()
1181:
1182: =back
1183:
1184: =cut
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