1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.109 2004/11/08 19:20:13 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::response;
30: use strict;
31: use Apache::lonlocal;
32:
33: BEGIN {
34: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse'));
35: }
36:
37: sub start_response {
38: my ($parstack,$safeeval)=@_;
39: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
40: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
41: if ($#Apache::inputtags::import > -1) {
42: &Apache::lonxml::debug("Turning :$id: into");
43: $id = join('_',@Apache::inputtags::import).'_'.$id;
44: &Apache::lonxml::debug("New :$id:");
45: }
46: push (@Apache::inputtags::response,$id);
47: push (@Apache::inputtags::responselist,$id);
48: @Apache::inputtags::inputlist=();
49: if ($Apache::inputtags::part eq '' &&
50: !$Apache::lonhomework::ignore_response_errors) {
51: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
52: }
53: if ($Apache::inputtags::response_with_no_part &&
54: $Apache::inputtags::part ne '0') {
55: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
56: }
57: if ($Apache::inputtags::part eq '0') {
58: $Apache::inputtags::response_with_no_part=1;
59: }
60: return $id;
61: }
62:
63: sub end_response {
64: #pop @Apache::inputtags::response;
65: @Apache::inputtags::inputlist=();
66: return '';
67: }
68:
69: sub start_hintresponse {
70: my ($parstack,$safeeval)=@_;
71: my $id= &Apache::lonxml::get_param('id',$parstack,$safeeval);
72: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
73: push (@Apache::inputtags::response,$id);
74: push (@Apache::inputtags::responselist,$id);
75: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
76: return $id;
77: }
78:
79: sub end_hintresponse {
80: pop @Apache::inputtags::response;
81: if (defined($Apache::inputtags::paramstack[-1])) {
82: %Apache::inputtags::params=
83: @{ pop(@Apache::inputtags::paramstack) };
84: }
85: return '';
86: }
87:
88: my @randomseeds;
89: sub pushrandomnumber {
90: my $rand_alg=&Apache::lonnet::get_rand_alg();
91: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
92: $rand_alg eq '64bit2') {
93: # do nothing
94: } else {
95: my @seed=&Math::Random::random_get_seed();
96: push (@randomseeds,\@seed);
97: }
98: &Apache::response::setrandomnumber();
99: }
100: sub poprandomnumber {
101: my $rand_alg=&Apache::lonnet::get_rand_alg();
102: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
103: $rand_alg eq '64bit2') {
104: return;
105: }
106: my $seed=pop(@randomseeds);
107: if ($seed) {
108: &Math::Random::random_set_seed(@$seed);
109: } else {
110: &Apache::lonxml::error("Unable to restore random algorithm.");
111: }
112: }
113: sub setrandomnumber {
114: my $rndseed;
115: $rndseed=&Apache::structuretags::setup_rndseed();
116: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
117: &Apache::lonxml::debug("randseed $rndseed");
118: # $rndseed=unpack("%32i",$rndseed);
119: my $rand_alg=&Apache::lonnet::get_rand_alg();
120: my $rndmod;
121: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
122: $rand_alg eq '64bit2') {
123: $rndmod=(&Apache::lonnet::numval($Apache::inputtags::part) << 10);
124: if (defined($Apache::inputtags::response[-1])) {
125: $rndmod+=&Apache::lonnet::numval($Apache::inputtags::response[-1]);
126: }
127: } else {
128: $rndmod=(&Apache::lonnet::numval2($Apache::inputtags::part) << 10);
129: if (defined($Apache::inputtags::response[-1])) {
130: $rndmod+=&Apache::lonnet::numval2($Apache::inputtags::response[-1]);
131: }
132: }
133: if ($rndseed =~/([,:])/) {
134: my $char=$1;
135: use integer;
136: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
137: $num1+=$rndmod;
138: $num2+=$rndmod;
139: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
140: $rndseed=$num1.$char.$num2;
141: } else {
142: $rndseed+=$rndmod;
143: if($Apache::lonnet::_64bit) {
144: use integer;
145: $rndseed=(($rndseed<<32)>>32);
146: }
147: }
148: &Apache::lonxml::debug("randseed $rndseed");
149: &Apache::lonnet::setup_random_from_rndseed($rndseed);
150: return '';
151: }
152:
153: sub meta_parameter_write {
154: my ($name,$type,$default,$display)=@_;
155: my $partref=$Apache::inputtags::part;
156: my $result='<parameter part="'.$Apache::inputtags::part.'"';
157: if (defined($Apache::inputtags::response[-1])) {
158: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
159: $partref.='_'.$Apache::inputtags::response[-1];
160: }
161: $result.= ' name="'.$name.'"'.
162: ' type="'.$type.'"'.
163: (defined($default)?' default="'.$default.'"':'').
164: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
165: .'></parameter>'
166: ."\n";
167: return $result;
168: }
169:
170: sub meta_package_write {
171: my $name=shift;
172: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
173: if(defined($Apache::inputtags::response[-1])) {
174: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
175: }
176: $result.=' package="'.$name.'"></parameter>'."\n";
177: return $result;
178: }
179:
180: sub meta_stores_write {
181: my ($name,$type,$display)=@_;
182: my $partref=$Apache::inputtags::part;
183: my $result = '<stores part="'.$Apache::inputtags::part.'"';
184: if (defined($Apache::inputtags::response[-1])) {
185: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
186: $partref.='_'.$Apache::inputtags::response[-1];
187: }
188: $result.= ' name="'.$name.'"'.
189: ' type="'.$type.'"'.
190: ' display="'.$display.' [Part: '.$partref.']"'.
191: "></stores>\n";
192: }
193:
194: sub mandatory_part_meta {
195: #
196: # Autogenerate metadata for mandatory
197: # input (from RAT or lonparmset) and
198: # output (to lonspreadsheet)
199: # of each part
200: #
201: return
202: # &meta_parameter_write('opendate','date_start','',
203: # 'Opening Date').
204: # &meta_parameter_write('duedate','date_end','',
205: # 'Due Date').
206: # &meta_parameter_write('answerdate','date_start','',
207: # 'Show Answer Date').
208: # &meta_parameter_write('weight','int_zeropos','',
209: # 'Available Points').
210: # &meta_parameter_write('maxtries','int_pos','',
211: # 'Maximum Number of Tries').
212: &meta_package_write('part').
213: &meta_stores_write('solved','string',
214: 'Problem Status').
215: &meta_stores_write('tries','int_zeropos',
216: 'Number of Attempts').
217: &meta_stores_write('awarded','float',
218: 'Partial Credit Factor');
219: #
220: # Note: responseid-specific data 'submission' and 'awarddetail'
221: # not available to spreadsheet -> skip here
222: #
223: }
224:
225: sub meta_part_order {
226: if (@Apache::inputtags::partlist) {
227: my @parts=@Apache::inputtags::partlist;
228: shift(@parts);
229: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
230: } else {
231: return '<partorder>0</partorder>'."\n";
232: }
233: }
234:
235: sub meta_response_order {
236: if (@Apache::inputtags::responselist) {
237: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
238: '</responseorder>'."\n";
239: }
240: }
241:
242: sub check_for_previous {
243: my ($curresponse,$partid,$id) = @_;
244: my %previous;
245: $previous{'used'} = 0;
246: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
247: if ($key =~ /resource\.$partid\.$id\.submission$/) {
248: &Apache::lonxml::debug("Trying $key");
249: my $pastresponse=$Apache::lonhomework::history{$key};
250: if ($pastresponse eq $curresponse) {
251: $previous{'used'} = 1;
252: my $history;
253: if ( $key =~ /^(\d+):/ ) {
254: $history=$1;
255: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
256: $previous{'last'}='0';
257: push(@{ $previous{'version'} },$history);
258: } else {
259: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
260: $previous{'last'}='1';
261: }
262: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
263: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
264: }
265: }
266: }
267: &Apache::lonhomework::showhash(%previous);
268: return %previous;
269: }
270:
271: sub handle_previous {
272: my ($previous,$ad)=@_;
273: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
274: if ($$previous{'last'}) {
275: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
276: push(@Apache::inputtags::previous_version,$$previous{'version'});
277: } elsif ($Apache::lonhomework::type ne 'survey') {
278: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
279: push(@Apache::inputtags::previous_version,$$previous{'version'});
280: }
281: }
282: }
283:
284: sub view_or_modify {
285: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
286: my $myself=0;
287: if ( ($name eq $ENV{'user.name'}) && ($domain eq $ENV{'user.domain'}) ) {
288: $myself=1;
289: }
290: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
291: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
292: if ($mgr) { return "M"; }
293: if ($vgr) { return "V"; }
294: if ($myself) { return "V"; }
295: return '';
296: }
297:
298: sub start_dataresponse {
299: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
300: my $id = &Apache::response::start_response($parstack,$safeeval);
301: my $result;
302: if ($target eq 'web') {
303: $result = $token->[2]->{'display'}.':';
304: } elsif ($target eq 'meta') {
305: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
306: $token->[2]->{'type'},
307: $token->[2]->{'display'});
308: $result .= &Apache::response::meta_package_write('dataresponse');
309: }
310: return $result;
311: }
312:
313: sub end_dataresponse {
314: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
315: my $result;
316: if ( $target eq 'web' ) {
317: } elsif ($target eq 'grade' ) {
318: if ( defined $ENV{'form.submitted'}) {
319: my ($symb,$courseid,$domain,$name)=&Apache::lonxml::whichuser();
320: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
321: if ($allowed) {
322: &Apache::response::setup_params('dataresponse',$safeeval);
323: my $partid = $Apache::inputtags::part;
324: my $id = $Apache::inputtags::response['-1'];
325: my $response = $ENV{'form.HWVAL_'.$id};
326: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
327: if ( $response =~ /[^\s]/) {
328: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
329: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
330: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
331: }
332: } else {
333: $result='Not Permitted to change values.'
334: }
335: }
336: }
337: &Apache::response::end_response;
338: return $result;
339: }
340:
341: sub decide_package {
342: my ($tagstack)=@_;
343: my $package;
344: if ($$tagstack[-1] eq 'parameter') {
345: $package='part';
346: } else {
347: my $i=-1;
348: while (defined($$tagstack[$i])) {
349: if ($$tagstack[$i] =~ /(response|hint)$/) {
350: $package=$$tagstack[$i];
351: last;
352: }
353: $i--;
354: }
355: }
356: return $package;
357: }
358:
359: sub start_responseparam {
360: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
361: my $result='';
362: if ($target eq 'meta') {
363: $result = &meta_parameter_write($token->[2]->{'name'},
364: $token->[2]->{'type'},
365: $token->[2]->{'default'},
366: $token->[2]->{'description'});
367: } elsif ($target eq 'edit') {
368: $result.=&Apache::edit::tag_start($target,$token);
369: my $optionlist;
370: my $package=&decide_package($tagstack);
371: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
372: if ($key =~ /^\Q$package\E&(.*)&display$/) {
373: $optionlist.='<option value="'.$1.'">'.
374: $Apache::lonnet::packagetab{$key}.'</option>';
375: }
376: }
377: if (defined($optionlist)) {
378: $result.='Use template: <select name="'.
379: &Apache::edit::html_element_name('parameter_package').'">'.
380: '<option value=""></option>'.$optionlist.'</select><br />';
381: }
382: $result.=&Apache::edit::text_arg('Name:','name',$token).
383: &Apache::edit::text_arg('Type:','type',$token).
384: &Apache::edit::text_arg('Description:','description',$token).
385: &Apache::edit::text_arg('Default:','default',$token).
386: "</td></tr>";
387: $result.=&Apache::edit::end_table;
388: } elsif ($target eq 'modified') {
389: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
390: $safeeval,'name','type',
391: 'description','default');
392: my $element=&Apache::edit::html_element_name('parameter_package');
393: if (defined($ENV{"form.$element"}) && $ENV{"form.$element"} ne '') {
394: my $name=$ENV{"form.$element"};
395: my $tag=&decide_package($tagstack);
396: $token->[2]->{'name'}=$name;
397: $token->[2]->{'type'}=
398: $Apache::lonnet::packagetab{"$tag&$name&type"};
399: $token->[2]->{'description'}=
400: $Apache::lonnet::packagetab{"$tag&$name&display"};
401: $token->[2]->{'default'}=
402: $Apache::lonnet::packagetab{"$tag&$name&default"};
403: $constructtag=1;
404: }
405: if ($constructtag) {
406: $result = &Apache::edit::rebuild_tag($token);
407: $result.=&Apache::edit::handle_insert();
408: }
409: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
410: $target eq 'tex' || $target eq 'analyze' ) {
411: if ($ENV{'request.state'} eq 'construct') {
412: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
413: my $default=&Apache::lonxml::get_param('default',$parstack,
414: $safeeval);
415: if ($name) {$Apache::inputtags::params{$name}=$default;}
416: }
417: }
418: return $result;
419: }
420:
421: sub end_responseparam {
422: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
423: if ($target eq 'edit') { return ('','no'); }
424: return '';
425: }
426:
427: sub start_parameter {
428: my $result = &start_responseparam(@_);
429: return $result;
430: }
431:
432: sub end_parameter {
433: my $result = &end_responseparam(@_);
434: return $result;
435: }
436:
437: sub reset_params {
438: %Apache::inputtags::params=();
439: }
440:
441: sub setup_params {
442: my ($tag,$safeeval) = @_;
443:
444: if ($ENV{'request.state'} eq 'construct') { return; }
445: my %paramlist=();
446: foreach my $key (keys(%Apache::lonnet::packagetab)) {
447: if ($key =~ /^$tag/) {
448: my ($package,$name) = split(/&/,$key);
449: $paramlist{$name}=1;
450: }
451: }
452: foreach my $key (keys(%paramlist)) {
453: my $entry= 'resource.'.$Apache::inputtags::part;
454: if (defined($Apache::inputtags::response[-1])) {
455: $entry.='_'.$Apache::inputtags::response[-1];
456: }
457: $entry.='.'.$key;
458: &Apache::lonxml::debug("looking for $entry");
459: my $value = &Apache::lonnet::EXT("$entry");
460: &Apache::lonxml::debug("$key has value :$value:");
461: if ($value eq 'con_lost' || $value =~ /^error:/) {
462: &Apache::lonxml::debug("using nothing");
463: $Apache::inputtags::params{$key}='';
464: } else {
465: my $string="{return qq\0".$value."\0}";
466: my $newvalue=&Apache::run::run($string,$safeeval,1);
467: if (defined($newvalue)) { $value=$newvalue; }
468: $Apache::inputtags::params{$key}=$value;
469: }
470: }
471: }
472:
473: sub answer_header {
474: my ($type) = @_;
475: my $result;
476: if ($ENV{'form.answer_output_mode'} eq 'tex') {
477: $result = ' \vskip 0 mm \begin{tabular}{|c|}\hline Answer for Part: \verb|'.
478: $Apache::inputtags::part.'| \\\\ \hline ';
479: } else {
480: $result = '<table border="1"><tr><td>Answer for Part:'.
481: $Apache::inputtags::part. '</td>'."\n";
482: }
483: return $result;
484: }
485:
486: sub answer_part {
487: my ($type,$answer) = @_;
488: my $result;
489: if ($ENV{'form.answer_output_mode'} eq 'tex') {
490: $result = ' \verb|'.$answer.'|\\\\ \hline ';
491: } else {
492: $result = '<td>'.$answer.'</td>';
493: }
494: return $result;
495: }
496:
497: sub answer_footer {
498: my ($type) = @_;
499: my $result;
500: if ($ENV{'form.answer_output_mode'} eq 'tex') {
501: $result = ' \end{tabular} \vskip 0 mm ';
502: } else {
503: $result = '</tr></table>';
504: }
505: return $result;
506: }
507:
508: sub showallfoils {
509: if (defined($ENV{'form.showallfoils'})) {
510: my ($symb)=&Apache::lonxml::whichuser();
511: if ($ENV{'request.state'} eq 'construct' ||
512: ($ENV{'user.adv'} && $symb eq '')) {
513: return 1;
514: }
515: }
516: if ($Apache::lonhomework::type eq 'survey') { return 1; }
517: return 0;
518: }
519:
520: sub getresponse {
521: my ($temp,$resulttype)=@_;
522: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
523: my $response;
524: if (!defined($temp)) {
525: $temp=1;
526: } else {
527: $formparm.=":$temp";
528: }
529: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
530: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
531: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
532: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
533: if ($ENV{'form.submitted'} eq 'scantron') {
534: my $part = $Apache::inputtags::part;
535: my $id = $Apache::inputtags::response[-1];
536: $response = $ENV{'scantron.'.($Apache::lonxml::counter+$temp-1).
537: '.answer'};
538: # save bubbled letter for later
539: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
540: $response;
541: if ($resulttype ne 'letter') {
542: if ($resulttype eq 'A is 1') {
543: $response = $let_to_num{$response}+1;
544: } else {
545: $response = $let_to_num{$response};
546: }
547: }
548: } else {
549: $response = $ENV{$formparm};
550: }
551: return $response;
552: }
553:
554: sub repetition {
555: my $id = $Apache::inputtags::part;
556: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
557: my $repetition = int $weight/9;
558: if ($weight % 9 != 0) {$repetition++;}
559: return $repetition;
560: }
561:
562: sub scored_response {
563: my ($part,$id)=@_;
564: my $repetition=&repetition();
565: my $score=0;
566: for (my $i=0;$i<$repetition;$i++) {
567: my $increase=&Apache::response::getresponse($i+1);
568: if ($increase ne '') { $score+=$increase+1; }
569: }
570: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
571: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
572: my $pcr=$score/$weight;
573: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
574: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
575: 'ASSIGNED_SCORE';
576: return $repetition;
577: }
578:
579: sub whichorder {
580: my ($max,$randomize,$showall,$hash)=@_;
581: #&Apache::lonxml::debug("man $max randomize $randomize");
582: if (!defined(@{ $$hash{'names'} })) { return; }
583: my @names = @{ $$hash{'names'} };
584: my @whichopt =();
585: my (%top,@toplist,%bottom,@bottomlist);
586: if (!($showall || ($randomize eq 'no'))) {
587: my $current=0;
588: foreach my $name (@names) {
589: $current++;
590: if ($$hash{"$name.location"} eq 'top') {
591: $top{$name}=$current;
592: } elsif ($$hash{"$name.location"} eq 'bottom') {
593: $bottom{$name}=$current;
594: }
595: }
596: }
597: my $topcount=0;
598: my $bottomcount=0;
599: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
600: && ($#names > -1)) {
601: #&Apache::lonxml::debug("Have $#whichopt max is $max");
602: my $aopt;
603: if ($showall || ($randomize eq 'no')) {
604: $aopt=0;
605: } else {
606: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
607: }
608: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
609: $aopt=splice(@names,$aopt,1);
610: #&Apache::lonxml::debug("Picked $aopt");
611: if ($top{$aopt}) {
612: $toplist[$top{$aopt}]=$aopt;
613: $topcount++;
614: } elsif ($bottom{$aopt}) {
615: $bottomlist[$bottom{$aopt}]=$aopt;
616: $bottomcount++;
617: } else {
618: push (@whichopt,$aopt);
619: }
620: }
621: for (my $i=0;$i<=$#toplist;$i++) {
622: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
623: }
624: for (my $i=0;$i<=$#bottomlist;$i++) {
625: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
626: }
627: return @whichopt;
628: }
629:
630: sub show_answer {
631: my $part = $Apache::inputtags::part;
632: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
633: my $status = $Apache::inputtags::status[-1];
634: return ( ($award =~ /^correct/
635: && lc($Apache::lonhomework::problemstatus) ne 'no')
636: || $status eq "SHOW_ANSWER");
637: }
638:
639: sub analyze_store_foilgroup {
640: my ($shown,$attrs)=@_;
641: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
642: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
643: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
644: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
645: foreach my $attr (@$attrs) {
646: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
647: $Apache::response::foilgroup{"$name.".$attr};
648: }
649: }
650: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
651: }
652:
653: sub check_if_computed {
654: my ($token,$parstack,$safeeval,$name)=@_;
655: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
656: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
657: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
658: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
659: }
660: }
661:
662: sub pick_foil_for_concept {
663: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
664: if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
665: my @names = @{ $Apache::response::conceptgroup{'names'} };
666: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
667: my $name=$names[$pick];
668: push @{ $Apache::response::foilgroup{'names'} }, $name;
669: foreach my $attr (@$attrs) {
670: $Apache::response::foilgroup{"$name.".$attr} =
671: $Apache::response::conceptgroup{"$name.".$attr};
672: }
673: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
674: $Apache::response::foilgroup{"$name.concept"} = $concept;
675: &Apache::lonxml::debug("Selecting $name in $concept");
676: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
677: if ($target eq 'analyze') {
678: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
679: $concept);
680: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
681: $Apache::response::conceptgroup{'names'};
682: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
683: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
684: $name);
685: foreach my $attr (@$attrs) {
686: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
687: $Apache::response::conceptgroup{"$name.$attr"};
688: }
689: }
690: }
691: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
692: $hinthash->{"$part_id.concept.$concept"}=
693: $Apache::response::conceptgroup{'names'};
694:
695: }
696:
697: sub get_response_param {
698: my ($id,$name,$default)=@_;
699: my $parameter;
700: if ($ENV{'request.state'} eq 'construct' &&
701: defined($Apache::inputtags::params{$name})) {
702: $parameter=$Apache::inputtags::params{$name};
703: } else {
704: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
705: }
706: if (!defined($parameter) || $parameter eq '') {
707: $parameter = $default;
708: }
709: return $parameter;
710: }
711:
712: 1;
713: __END__
714:
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