1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.243 2015/03/09 16:19:54 raeburn 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: =pod
30:
31: =head1 NAME
32:
33: Apache::response.pm
34:
35: =head1 SYNOPSIS
36:
37: This is part of the LearningOnline Network with CAPA project
38: described at http://www.lon-capa.org.
39:
40:
41: =head1 NOTABLE SUBROUTINES
42:
43: =over
44:
45: =item
46:
47: =back
48:
49: =cut
50:
51:
52: package Apache::response;
53: use strict;
54: use Apache::lonlocal;
55: use Apache::lonnet;
56: use Apache::inputtags();
57: use Apache::lonmaxima();
58: use Apache::lonr();
59: use Apache::lontexconvert();
60:
61: BEGIN {
62: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
63: }
64:
65: sub start_response {
66: my ($parstack,$safeeval)=@_;
67: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
68: if ($#Apache::inputtags::import > -1) {
69: &Apache::lonxml::debug("Turning :$id: into");
70: $id = join('_',@Apache::inputtags::import).'_'.$id;
71: &Apache::lonxml::debug("New :$id:");
72: }
73: push (@Apache::inputtags::response,$id);
74: push (@Apache::inputtags::responselist,$id);
75: @Apache::inputtags::inputlist=();
76: if ($Apache::inputtags::part eq '' &&
77: !$Apache::lonhomework::ignore_response_errors) {
78: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
79: }
80: if ($Apache::inputtags::response_with_no_part &&
81: $Apache::inputtags::part ne '0') {
82: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
83: }
84: if ($Apache::inputtags::part eq '0') {
85: $Apache::inputtags::response_with_no_part=1;
86: }
87: return $id;
88: }
89:
90: sub end_response {
91: #pop @Apache::inputtags::response;
92: @Apache::inputtags::inputlist=();
93: return '';
94: }
95:
96: sub start_hintresponse {
97: my ($parstack,$safeeval)=@_;
98: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
99: push (@Apache::inputtags::hint,$id);
100: push (@Apache::inputtags::hintlist,$id);
101: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
102: return $id;
103: }
104:
105: sub end_hintresponse {
106: pop @Apache::inputtags::hint;
107: if (defined($Apache::inputtags::paramstack[-1])) {
108: %Apache::inputtags::params=
109: @{ pop(@Apache::inputtags::paramstack) };
110: }
111: return '';
112: }
113:
114: my @randomseeds;
115: sub pushrandomnumber {
116: my $rand_alg=&Apache::lonnet::get_rand_alg();
117: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
118: $rand_alg eq '64bit2') {
119: # do nothing
120: } else {
121: my @seed=&Math::Random::random_get_seed();
122: push(@randomseeds,\@seed);
123: }
124: &Apache::response::setrandomnumber(@_);
125: }
126: sub poprandomnumber {
127: my $rand_alg=&Apache::lonnet::get_rand_alg();
128: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
129: $rand_alg eq '64bit2') {
130: return;
131: }
132: my $seed=pop(@randomseeds);
133: if ($seed) {
134: &Math::Random::random_set_seed(@$seed);
135: } else {
136: &Apache::lonxml::error("Unable to restore random algorithm.");
137: }
138: }
139:
140: sub setrandomnumber {
141: my ($ignore_id2,$target,$rndseed) = @_;
142: if (!defined($rndseed)) {
143: $rndseed=&Apache::structuretags::setup_rndseed(undef,$target);
144: }
145: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
146: &Apache::lonxml::debug("randseed $rndseed");
147: # $rndseed=unpack("%32i",$rndseed);
148: my $rand_alg=&Apache::lonnet::get_rand_alg();
149: my ($rndmod,$rndmod2);
150:
151: my ($id1,$id2,$shift_amt);
152: if ($Apache::lonhomework::parsing_a_problem) {
153: $id1=$Apache::inputtags::part;
154: if (defined($Apache::inputtags::response[-1])) {
155: $id2=$Apache::inputtags::response[-1];
156: }
157: $shift_amt=scalar(@Apache::inputtags::responselist);
158: } elsif ($Apache::lonhomework::parsing_a_task) {
159: $id1=&Apache::bridgetask::get_dim_id();
160: if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
161: $id2=$Apache::bridgetask::instance{$id1}[-1];
162: $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
163: } else {
164: $shift_amt=0;
165: }
166: }
167: &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
168: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
169: $rand_alg eq '64bit2') {
170: $rndmod=(&Apache::lonnet::numval($id1) << 10);
171: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
172: } elsif ($rand_alg eq '64bit3') {
173: $rndmod=(&Apache::lonnet::numval2($id1) << 10);
174: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
175: } elsif ($rand_alg eq '64bit4') {
176: my $shift=(4*$shift_amt)%30;
177: $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
178: if (defined($id2)) {
179: $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
180: }
181: } else {
182: ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
183: }
184: if ($rndseed =~/([,:])/) {
185: my $char=$1;
186: use integer;
187: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
188: $num1+=$rndmod;
189: $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
190: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
191: $rndseed=$num1.$char.$num2;
192: } else {
193: $rndseed+=$rndmod;
194: if($Apache::lonnet::_64bit) {
195: use integer;
196: $rndseed=(($rndseed<<32)>>32);
197: }
198: }
199: &Apache::lonxml::debug("randseed $rndmod $rndseed");
200: &Apache::lonnet::setup_random_from_rndseed($rndseed);
201: return '';
202: }
203:
204: sub meta_parameter_write {
205: my ($name,$type,$default,$display)=@_;
206: my $partref=$Apache::inputtags::part;
207: my $result='<parameter part="'.$Apache::inputtags::part.'"';
208: if (defined($Apache::inputtags::response[-1])) {
209: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
210: $partref.='_'.$Apache::inputtags::response[-1];
211: }
212: $result.= ' name="'.$name.'"'.
213: ' type="'.$type.'"'.
214: (defined($default)?' default="'.$default.'"':'').
215: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
216: .'></parameter>'
217: ."\n";
218: return $result;
219: }
220:
221: sub meta_package_write {
222: my $name=shift;
223: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
224: if(defined($Apache::inputtags::response[-1])) {
225: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
226: }
227: $result.=' package="'.$name.'"></parameter>'."\n";
228: return $result;
229: }
230:
231: sub meta_stores_write {
232: my ($name,$type,$display)=@_;
233: my $partref=$Apache::inputtags::part;
234: my $result = '<stores part="'.$Apache::inputtags::part.'"';
235: if (defined($Apache::inputtags::response[-1])) {
236: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
237: $partref.='_'.$Apache::inputtags::response[-1];
238: }
239: $result.= ' name="'.$name.'"'.
240: ' type="'.$type.'"'.
241: ' display="'.$display.' [Part: '.$partref.']"'.
242: "></stores>\n";
243: }
244:
245: =pod
246:
247: =item mandatory_part_meta()
248:
249: Autogenerate metadata for mandatory
250: input (from RAT or lonparmset) and
251: output (to lonspreadsheet)
252: of each part
253:
254: Note: responseid-specific data 'submission' and 'awarddetail'
255: not available to spreadsheet -> skip here
256:
257: =cut
258:
259:
260: sub mandatory_part_meta {
261: return &meta_package_write('part').
262: &meta_stores_write('solved','string','Problem Status').
263: &meta_stores_write('tries','int_zeropos','Number of Attempts').
264: &meta_stores_write('awarded','float','Partial Credit Factor');
265: }
266:
267: sub meta_part_order {
268: if (@Apache::inputtags::partlist) {
269: my @parts=@Apache::inputtags::partlist;
270: shift(@parts);
271: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
272: } else {
273: return '<partorder>0</partorder>'."\n";
274: }
275: }
276:
277: sub meta_response_order {
278: if (@Apache::inputtags::responselist) {
279: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
280: '</responseorder>'."\n";
281: }
282: }
283:
284: sub check_for_previous {
285: my ($curresponse,$partid,$id,$last,$type) = @_;
286: my %previous;
287: $previous{'used'} = 0;
288: my $questiontype = $Apache::lonhomework::type;
289: my $curr_rndseed = $env{'form.'.$partid.'.rndseed'};
290: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
291: if ($key =~ /resource\.\Q$partid\E\.\Q$id\E\.submission$/) {
292: if ( $last && $key =~ /^(\d+):/ ) {
293: next if ($1 >= $last);
294: }
295: &Apache::lonxml::debug("Trying $key");
296: my $pastresponse=$Apache::lonhomework::history{$key};
297: if ($pastresponse eq $curresponse) {
298: my $history;
299: if ( $key =~ /^(\d+):/ ) {
300: $history=$1;
301: next if ((($questiontype eq 'randomizetry') ||
302: ($Apache::lonhomework::history{"$history:resource.$partid.type"} eq 'randomizetry')) &&
303: ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
304: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
305: $previous{'last'}='0';
306: push(@{ $previous{'version'} },$history);
307: } else {
308: next if ((($questiontype eq 'randomizetry') ||
309: ($Apache::lonhomework::history{"resource.$partid.type"} eq 'randomizetry')) &&
310: ($curr_rndseed ne $Apache::lonhomework::history{"resource.$partid.rndseed"}));
311: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
312: $previous{'last'}='1';
313: }
314: $previous{'used'} = 1;
315: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
316: if ($previous{'award'} eq 'INTERNAL_ERROR') { $previous{'used'}=0; }
317: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
318: } elsif ($type eq 'ci') {
319: if (lc($pastresponse) eq lc($curresponse)) {
320: if ($key =~ /^(\d+):/) {
321: my $history = $1;
322: next if (($questiontype eq 'randomizetry') &&
323: ($curr_rndseed ne $Apache::lonhomework::history{"$history:resource.$partid.rndseed"}));
324: push (@{$previous{'versionci'}},$history);
325: $previous{'awardci'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
326: $previous{'usedci'} = 1;
327: }
328: }
329: }
330: }
331: }
332: &Apache::lonhomework::showhash(%previous);
333: return %previous;
334: }
335:
336: sub handle_previous {
337: my ($previous,$ad)=@_;
338: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
339: if ($$previous{'last'}) {
340: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
341: push(@Apache::inputtags::previous_version,$$previous{'version'});
342: } elsif (($Apache::lonhomework::type ne 'survey') &&
343: ($Apache::lonhomework::type ne 'surveycred') &&
344: ($Apache::lonhomework::type ne 'anonsurvey') &&
345: ($Apache::lonhomework::type ne 'anonsurveycred')) {
346: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
347: push(@Apache::inputtags::previous_version,$$previous{'version'});
348: }
349: }
350: }
351:
352: sub view_or_modify {
353: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
354: my $myself=0;
355: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
356: $myself=1;
357: }
358: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
359: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
360: if ($mgr) { return "M"; }
361: if ($vgr) { return "V"; }
362: if ($myself) { return "V"; }
363: return '';
364: }
365:
366: sub start_dataresponse {
367: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
368: my $id = &Apache::response::start_response($parstack,$safeeval);
369: my $result;
370: if ($target eq 'web') {
371: $result = $token->[2]->{'display'}.':';
372: } elsif ($target eq 'meta') {
373: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
374: $token->[2]->{'type'},
375: $token->[2]->{'display'});
376: $result .= &Apache::response::meta_package_write('dataresponse');
377: }
378: return $result;
379: }
380:
381: sub end_dataresponse {
382: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
383: my $result;
384: if ( $target eq 'web' ) {
385: } elsif ($target eq 'grade' ) {
386: if ( defined $env{'form.submitted'}) {
387: my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
388: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
389: if ($allowed) {
390: &Apache::response::setup_params('dataresponse',$safeeval);
391: my $partid = $Apache::inputtags::part;
392: my $id = $Apache::inputtags::response['-1'];
393: my $response = $env{'form.HWVAL_'.$id};
394: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
395: if ( $response =~ /[^\s]/) {
396: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
397: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
398: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
399: }
400: } else {
401: $result=&mt('Not Permitted to change values');
402: }
403: }
404: }
405: &Apache::response::end_response;
406: return $result;
407: }
408:
409: sub start_customresponse {
410: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
411: my $id = &Apache::response::start_response($parstack,$safeeval);
412: push(@Apache::lonxml::namespace,'customresponse');
413: my $result;
414: @Apache::response::custom_answer=();
415: @Apache::response::custom_answer_type=();
416: &Apache::lonxml::register('Apache::response',('answer'));
417: if ($target eq 'web') {
418: if ( &Apache::response::show_answer() ) {
419: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
420: $safeeval);
421: $Apache::inputtags::answertxt{$id}=[$answer];
422: }
423: } elsif ($target eq 'edit') {
424: $result.=&Apache::edit::tag_start($target,$token);
425: $result.=&Apache::edit::text_arg('String to display for answer:',
426: 'answerdisplay',$token,'50');
427: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
428: } elsif ($target eq 'modified') {
429: my $constructtag;
430: $constructtag=&Apache::edit::get_new_args($token,$parstack,
431: $safeeval,'answerdisplay');
432: if ($constructtag) {
433: $result = &Apache::edit::rebuild_tag($token);
434: }
435: } elsif ($target eq 'answer' || $target eq 'grade') {
436: &Apache::response::reset_params();
437: } elsif ($target eq 'meta') {
438: $result .= &Apache::response::meta_package_write('customresponse');
439: }
440: return $result;
441: }
442:
443: sub end_customresponse {
444: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
445: my $result;
446: my $part=$Apache::inputtags::part;
447: my $id=$Apache::inputtags::response[-1];
448: if ( $target eq 'grade' && &Apache::response::submitted() ) {
449: my $response = &Apache::response::getresponse();
450: if ($Apache::lonhomework::type eq 'exam' ||
451: &Apache::response::submitted('scantron')) {
452: &Apache::response::scored_response($part,$id);
453: } elsif ( $response =~ /[^\s]/ &&
454: $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
455: if (!$Apache::lonxml::default_homework_loaded) {
456: &Apache::lonxml::default_homework_load($safeeval);
457: }
458: my %previous = &Apache::response::check_for_previous($response,
459: $part,$id);
460: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
461: $response;
462: my $error;
463: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
464: $response;
465:
466: my ($award,$score) = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
467: if (!&Apache::inputtags::valid_award($award)) {
468: $error = $award;
469: $award = 'ERROR';
470: }
471: if (($award eq 'INCORRECT' || $award eq 'APPROX_ANS' ||
472: $award eq 'EXACT_ANS')) {
473: if ($Apache::lonhomework::type eq 'survey') {
474: $award='SUBMITTED';
475: } elsif ($Apache::lonhomework::type eq 'surveycred') {
476: $award='SUBMITTED_CREDIT';
477: } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
478: $award='ANONYMOUS';
479: } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
480: $award='ANONYMOUS_CREDIT';
481: }
482: }
483: &Apache::response::handle_previous(\%previous,$award);
484: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
485: $award;
486: if ($award eq 'ASSIGNED_SCORE') {
487: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=1.0*$score;
488: }
489: if ($error) {
490: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
491: $error;
492: }
493: }
494: } elsif ( $target eq 'answer') {
495: $result = &Apache::response::answer_header('customresponse');
496: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
497: $safeeval);
498: if ($env{'form.answer_output_mode'} ne 'tex') {
499: $answer = '<b>'.$answer.'</b>';
500: }
501: $result .= &Apache::response::answer_part('customresponse',$answer);
502: $result .= &Apache::response::answer_footer('customresponse');
503: }
504: if ($target eq 'web') {
505: &setup_prior_tries_hash(\&format_prior_response_custom);
506: }
507: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
508: $target eq 'tex' || $target eq 'analyze') {
509: my $repetition = &repetition();
510: &Apache::lonxml::increment_counter($repetition,"$part.$id");
511: if ($target eq 'analyze') {
512: $Apache::lonhomework::analyze{"$part.$id.type"} = 'customresponse';
513: &Apache::lonhomework::set_bubble_lines();
514: }
515: }
516: pop(@Apache::lonxml::namespace);
517: pop(@Apache::response::custom_answer);
518: pop(@Apache::response::custom_answer_type);
519: &Apache::lonxml::deregister('Apache::response',('answer'));
520: &Apache::response::end_response();
521: return $result;
522: }
523:
524: sub format_prior_response_custom {
525: my ($mode,$answer) =@_;
526: if (ref($answer) eq 'ARRAY') {
527: $answer = '('.join(', ', @{ $answer }).')';
528: }
529: return '<span class="LC_prior_custom">'.
530: &HTML::Entities::encode($answer,'"<>&').'</span>';
531: }
532:
533: sub start_mathresponse {
534: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
535: my $id = &Apache::response::start_response($parstack,$safeeval);
536: push(@Apache::lonxml::namespace,'mathresponse');
537: my $result;
538: @Apache::response::custom_answer=();
539: @Apache::response::custom_answer_type=();
540: &Apache::lonxml::register('Apache::response',('answer'));
541: if ($target eq 'web') {
542: if ( &Apache::response::show_answer() ) {
543: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
544: $safeeval);
545: $Apache::inputtags::answertxt{$id}=[$answer];
546: }
547:
548: } elsif ($target eq 'edit') {
549: $result.=&Apache::edit::tag_start($target,$token);
550: $result.=&Apache::edit::text_arg('String to display for answer:',
551: 'answerdisplay',$token,'50');
552: $result.=&Apache::edit::select_arg('Algebra System:',
553: 'cas',
554: ['maxima','R'],
555: $token);
556: $result.=&Apache::edit::text_arg('Argument Array:',
557: 'args',$token).
558: &Apache::loncommon::help_open_topic('Maxima_Argument_Array');
559: $result.=&Apache::edit::text_arg('Libraries:',
560: 'libraries',$token).
561: &Apache::loncommon::help_open_topic('Maxima_Libraries');
562: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
563: } elsif ($target eq 'modified') {
564: my $constructtag;
565: $constructtag=&Apache::edit::get_new_args($token,$parstack,
566: $safeeval,'answerdisplay','cas','args','libraries');
567: if ($constructtag) {
568: $result = &Apache::edit::rebuild_tag($token);
569: }
570: } elsif ($target eq 'answer' || $target eq 'grade') {
571: &Apache::response::reset_params();
572: } elsif ($target eq 'meta') {
573: $result .= &Apache::response::meta_package_write('mathresponse');
574: }
575: return $result;
576: }
577:
578: sub edit_mathresponse_button {
579: my ($partid,$id)=@_;
580: my $field = 'HWVAL_'.$partid.'_'.$id;
581: my $eqneditor = 'lcmath';
582: if ($env{'browser.type'} eq 'safari') {
583: if ($env{'browser.os'} eq 'mac') {
584: my ($prefix,$version) = ($env{'browser.version'} =~ /^(\d*)(\d{3})\./);
585: if ($env{'browser.mobile'}) {
586: if (($version < 531) || (($prefix eq '') && ($version < 533))) {
587: $eqneditor = '';
588: }
589: } elsif ($version < 533) {
590: $eqneditor = 'dragmath';
591: }
592: } elsif ($env{'browser.os'} eq 'win') {
593: if ($env{'browser.version'} < 533) {
594: $eqneditor = 'dragmath';
595: }
596: }
597: } elsif ($env{'browser.type'} eq 'explorer') {
598: if ($env{'browser.version'} < 9) {
599: $eqneditor = 'dragmath';
600: }
601: } elsif ($env{'browser.type'} eq 'mozilla') {
602: if ($env{'browser.version'} < 5) {
603: $eqneditor = 'dragmath';
604: } else {
605: if ($env{'browser.info'} =~ /^firefox\-([\d\.]+)/) {
606: my $firefox = $1;
607: if ($firefox < 4) {
608: $eqneditor = 'dragmath';
609: }
610: }
611: }
612: } elsif ($env{'browser.type'} eq 'chrome') {
613: if ($env{'browser.version'} < 5) {
614: $eqneditor = 'dragmath';
615: }
616: } elsif ($env{'browser.type'} eq 'opera') {
617: if ($env{'browser.version'} < 12) {
618: $eqneditor = 'dragmath';
619: }
620: }
621: if ($eqneditor eq 'lcmath') {
622: if (($env{'request.course.id'}) && ($env{'request.state'} ne 'construct')) {
623: if (exists($env{'course.'.$env{'request.course.id'}.'.uselcmath'})) {
624: if ($env{'course.'.$env{'request.course.id'}.'.uselcmath'} eq '0') {
625: $eqneditor = 'dragmath';
626: }
627: } else {
628: my %domdefs = &Apache::lonnet::get_domain_defaults($env{'course.'.$env{'request.course.id'}.'.domain'});
629: if ($domdefs{'uselcmath'} eq '0') {
630: $eqneditor = 'dragmath';
631: }
632: }
633: } else {
634: my %domdefs = &Apache::lonnet::get_domain_defaults($env{'course.'.$env{'request.course.id'}.'.domain'});
635: if ($domdefs{'uselcmath'} eq '0') {
636: $eqneditor = 'dragmath';
637: }
638: }
639: }
640: if ($eqneditor eq 'dragmath') {
641: # DragMath applet
642: my $button=&mt('Edit Answer');
643: # my $helplink=&Apache::loncommon::help_open_topic('Formula_Editor');
644: my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
645: return(<<ENDFORMULABUTTON);
646: <script type="text/javascript" language="JavaScript">
647: function LC_mathedit_${field} (LCtextline) {
648: thenumber = LCtextline;
649: var thedata = '';
650: if (document.getElementById(LCtextline)) {
651: thedata = document.getElementById(LCtextline).value;
652: }
653: newwin = window.open("/adm/dragmath/MaximaPopup.html","","width=565,height=400,resizable");
654: }
655: </script>
656: <a href="javascript:LC_mathedit_${field}('${field}');void(0);"><img class="stift" src="$iconpath/stift.gif" alt="$button" title="$button" /></a>
657: ENDFORMULABUTTON
658: } elsif ($eqneditor eq 'lcmath') {
659: # LON-CAPA math equation editor
660: my $mathjaxjs;
661: unless (lc(&Apache::lontexconvert::tex_engine()) eq 'mathjax') {
662: $mathjaxjs = <<"MATHJAX_SCRIPT";
663: var mathjaxscript = document.createElement("script");
664: mathjaxscript.type = "text/javascript";
665: mathjaxscript.src = "/adm/MathJax/MathJax.js?config=TeX-AMS-MML_HTMLorMML";
666: document.body.appendChild(mathjaxscript);
667: MATHJAX_SCRIPT
668: }
669: return(<<EQ_EDITOR_SCRIPT);
670: <script type="text/javascript">
671: var LCmathField = document.getElementById('${field}');
672: LCmathField.className += ' math'; // note the space
673: LCmathField.setAttribute('data-implicit_operators', 'true');
674: var LCMATH_started;
675: if (typeof LCMATH_started === 'undefined') {
676: $mathjaxjs
677: LCMATH_started = true;
678: var script = document.createElement("script");
679: script.type = "text/javascript";
680: script.src = "/adm/LC_math_editor/LC_math_editor.min.js";
681: document.body.appendChild(script);
682: window.addEventListener('load', function(e) {
683: LCMATH.initEditors();
684: }, false);
685: }
686: </script>
687: EQ_EDITOR_SCRIPT
688: }
689: }
690:
691: sub end_mathresponse {
692: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
693: my $result;
694: my $part=$Apache::inputtags::part;
695: my $id=$Apache::inputtags::response[-1];
696: if ( $target eq 'grade' && &Apache::response::submitted() ) {
697: my $response = &Apache::response::getresponse();
698: if ( $response =~ /[^\s]/ ) {
699: if (!$Apache::lonxml::default_homework_loaded) {
700: &Apache::lonxml::default_homework_load($safeeval);
701: }
702: my %previous = &Apache::response::check_for_previous($response,
703: $part,$id);
704: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
705: $response;
706: my $error;
707: my $award;
708: my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
709: if ($cas eq 'maxima') {
710: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
711: $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args,
712: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
713: }
714: if ($cas eq 'R') {
715: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
716: $award=&Apache::lonr::r_run($Apache::response::custom_answer[-1],$response,$args,
717: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
718: }
719:
720: if (!&Apache::inputtags::valid_award($award)) {
721: $error = $award;
722: $award = 'ERROR';
723: }
724: if (($award eq 'INCORRECT' || $award eq 'APPROX_ANS' ||
725: $award eq 'EXACT_ANS')) {
726: if ($Apache::lonhomework::type eq 'survey') {
727: $award='SUBMITTED';
728: } elsif ($Apache::lonhomework::type eq 'surveycred') {
729: $award='SUBMITTED_CREDIT';
730: } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
731: $award='ANONYMOUS';
732: } elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
733: $award='ANONYMOUS_CREDIT';
734: }
735: }
736: &Apache::response::handle_previous(\%previous,$award);
737: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
738: $award;
739: if ($error) {
740: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
741: $error;
742: }
743: }
744: }
745: if ($target eq 'web') {
746: &setup_prior_tries_hash(\&format_prior_response_math);
747: my $partid = $Apache::inputtags::part;
748: my $id = $Apache::inputtags::response[-1];
749: if (($Apache::inputtags::status['-1'] eq 'CAN_ANSWER')
750: && (&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffeditor') ne 'yes')) {
751: $result.=&edit_mathresponse_button($partid,$id);
752: }
753: }
754:
755: pop(@Apache::lonxml::namespace);
756: pop(@Apache::response::custom_answer);
757: pop(@Apache::response::custom_answer_type);
758: &Apache::lonxml::deregister('Apache::response',('answer'));
759: &Apache::response::end_response();
760: return $result;
761: }
762:
763: sub format_prior_response_math {
764: my ($mode,$answer) =@_;
765: return '<span class="LC_prior_math">'.
766: &HTML::Entities::encode($answer,'"<>&').'</span>';
767: }
768:
769: sub implicit_multiplication {
770: my ($expression)=@_;
771: # Escape scientific notation, so 3e8 does not become 3*e*8
772: # 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8
773: $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;
774: # 3x10^8 -> 3&8; 3*10^-8 -> 3&-8
775: $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;
776: # Fill in multiplication signs
777: # a b -> a*b;3 b -> 3*b;3 4 -> 3*4
778: $expression=~s/([A-Za-z0-9])\s+(?=[A-Za-z0-9])/$1\*/gs;
779: # )( -> )*(; ) ( -> )*(
780: $expression=~s/\)\s*\(/\)\*\(/gs;
781: # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A
782: $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;
783: # a ( -> a*(
784: $expression=~s/([A-Za-z0-9])\s+\(/$1\*\(/gs;
785: # )a -> )*a; )3 -> )*3; ) 3 -> )*3
786: $expression=~s/\)\s*([A-Za-z0-9])/\)\*$1/gs;
787: # 3&8 -> 3e8; 3&-4 -> 3e-4
788: $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;
789: return $expression;
790: }
791:
792: sub start_answer {
793: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
794: my $result;
795: push(@Apache::response::custom_answer,
796: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser));
797: push(@Apache::response::custom_answer_type,
798: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval)));
799: $Apache::response::custom_answer_type[-1] =~ s/\s+//g;
800: if ($target eq "edit" ) {
801: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
802: $result.=&Apache::edit::editfield($token->[1],
803: $Apache::response::custom_answer[-1],
804: '',80,4);
805: } elsif ( $target eq "modified" ) {
806: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
807: }
808: return $result;
809: }
810:
811: sub end_answer {
812: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
813: if ($target eq 'edit' ) {
814: return &Apache::edit::end_table();
815: }
816: }
817:
818: sub decide_package {
819: my ($tagstack)=@_;
820: my $package;
821: if ($$tagstack[-1] eq 'parameter') {
822: $package='part';
823: } else {
824: my $i=-1;
825: while (defined($$tagstack[$i])) {
826: if ($$tagstack[$i] =~ /(response|hint)$/) {
827: $package=$$tagstack[$i];
828: last;
829: }
830: $i--;
831: }
832: }
833: return $package;
834: }
835:
836: sub start_responseparam {
837: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
838: my $result='';
839: if ($target eq 'meta') {
840: $result = &meta_parameter_write($token->[2]->{'name'},
841: $token->[2]->{'type'},
842: $token->[2]->{'default'},
843: $token->[2]->{'description'});
844: } elsif ($target eq 'edit') {
845: $result.=&Apache::edit::tag_start($target,$token);
846: my $optionlist;
847: my $package=&decide_package($tagstack);
848: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
849: if ($key =~ /^\Q$package\E&(.*)&display$/) {
850: $optionlist.='<option value="'.$1.'">'.
851: $Apache::lonnet::packagetab{$key}.'</option>';
852: }
853: }
854: if (defined($optionlist)) {
855: $result.=&mt('Use template:').' <select name="'.
856: &Apache::edit::html_element_name('parameter_package').'">'.
857: '<option value=""></option>'.$optionlist.'</select><br />';
858: }
859: $result.=&Apache::edit::text_arg('Name:','name',$token).
860: &Apache::edit::text_arg('Type:','type',$token).
861: &Apache::edit::text_arg('Description:','description',$token).
862: &Apache::edit::text_arg('Default:','default',$token).
863: "</td></tr>";
864: $result.=&Apache::edit::end_table;
865: } elsif ($target eq 'modified') {
866: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
867: $safeeval,'name','type',
868: 'description','default');
869: my $element=&Apache::edit::html_element_name('parameter_package');
870: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
871: my $name=$env{"form.$element"};
872: my $tag=&decide_package($tagstack);
873: $token->[2]->{'name'}=$name;
874: $token->[2]->{'type'}=
875: $Apache::lonnet::packagetab{"$tag&$name&type"};
876: $token->[2]->{'description'}=
877: $Apache::lonnet::packagetab{"$tag&$name&display"};
878: $token->[2]->{'default'}=
879: $Apache::lonnet::packagetab{"$tag&$name&default"};
880: $token->[3] = ['name','type','description','default'];
881: $constructtag=1;
882: }
883: if ($constructtag) {
884: $result = &Apache::edit::rebuild_tag($token);
885: }
886: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
887: $target eq 'tex' || $target eq 'analyze' ) {
888: if ($env{'request.state'} eq 'construct') {
889: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
890: my $default=&Apache::lonxml::get_param('default',$parstack,
891: $safeeval);
892: if ($name) {$Apache::inputtags::params{$name}=$default;}
893: }
894: }
895: return $result;
896: }
897:
898: sub end_responseparam {
899: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
900: if ($target eq 'edit') { return ('','no'); }
901: return '';
902: }
903:
904: sub start_parameter {
905: return &start_responseparam(@_);
906: }
907:
908: sub end_parameter {
909: return &end_responseparam(@_);
910: }
911:
912: sub reset_params {
913: %Apache::inputtags::params=();
914: }
915:
916: sub setup_params {
917: my ($tag,$safeeval) = @_;
918:
919: if ($env{'request.state'} eq 'construct') { return; }
920: my %paramlist=();
921: foreach my $key (keys(%Apache::lonnet::packagetab)) {
922: if ($key =~ /^\Q$tag\E/) {
923: my ($package,$name) = split(/&/,$key);
924: $paramlist{$name}=1;
925: }
926: }
927: foreach my $key (keys(%paramlist)) {
928: my $entry= 'resource.'.$Apache::inputtags::part;
929: if (defined($Apache::inputtags::response[-1])) {
930: $entry.='_'.$Apache::inputtags::response[-1];
931: }
932: $entry.='.'.$key;
933: &Apache::lonxml::debug("looking for $entry");
934: my $value = &Apache::lonnet::EXT("$entry");
935: &Apache::lonxml::debug("$key has value :$value:");
936: if ($value eq 'con_lost' || $value =~ /^error:/) {
937: &Apache::lonxml::debug("using nothing");
938: $Apache::inputtags::params{$key}='';
939: } else {
940: my $string="{return qq\0".$value."\0}";
941: my $newvalue=&Apache::run::run($string,$safeeval,1);
942: if (defined($newvalue)) { $value=$newvalue; }
943: $Apache::inputtags::params{$key}=$value;
944: }
945: }
946: }
947:
948: {
949: my @answer_bits;
950: my $need_row_start;
951:
952: sub answer_header {
953: my ($type,$increment,$rows) = @_;
954: my $result;
955: if ($env{'form.answer_output_mode'} eq 'tex') {
956: undef(@answer_bits);
957: my $bit;
958: if ($Apache::lonhomework::type eq 'exam') {
959: $bit = ($Apache::lonxml::counter+$increment).') ';
960: } else {
961: $bit .= ' '.&mt('Answer for Part: [_1]',
962: '\verb|'.$Apache::inputtags::part.'|').' ';
963: }
964: push(@answer_bits,$bit);
965: } else {
966: my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
967: $result = '<table border="1"><tr>';
968: if ($Apache::lonhomework::type eq 'exam') {
969: $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
970: } else {
971: $result .= $td.&mt('Answer for Part: [_1]',
972: $Apache::inputtags::part).'</td>';
973: }
974: $result .= "\n";
975: $need_row_start = 0;
976: }
977: return $result;
978: }
979:
980: sub next_answer {
981: my ($type) = @_;
982: my $result;
983: if ($env{'form.answer_output_mode'} eq 'tex') {
984: # FIXME ... need to do something with tex mode
985: } else {
986: $result .= "</tr>";
987: $need_row_start = 1;
988: }
989: return $result;
990: }
991:
992: sub answer_part {
993: my ($type,$answer,$args) = @_;
994: my $result;
995: if ($env{'form.answer_output_mode'} eq 'tex') {
996: if (!$args->{'no_verbatim'}) {
997: my $to_use='|';
998: foreach my $value (32..126) {
999: my $char=pack('c',$value);
1000: if ($answer !~ /\Q$char\E/) {
1001: $to_use=$char;
1002: last;
1003: }
1004: }
1005: my $fullanswer=$answer;
1006: $answer='';
1007: foreach my $element (split(/[\;]/,$fullanswer)) {
1008: if ($element ne '') {
1009: $answer.= '\verb'.$to_use.$element.$to_use.' \newline';
1010: }
1011: }
1012: }
1013: if ($answer ne '') {
1014: push(@answer_bits,$answer);
1015: }
1016: } else {
1017: if ($need_row_start) {
1018: $result .= '<tr>';
1019: $need_row_start = 0;
1020: }
1021: $result .= '<td>'.$answer.'</td>';
1022: }
1023: return $result;
1024: }
1025:
1026: sub answer_footer {
1027: my ($type) = @_;
1028: my $result;
1029: if ($env{'form.answer_output_mode'} eq 'tex') {
1030: $result = ' \vskip 0 mm \noindent \begin{tabular}{|p{1.5cm}|p{6.8cm}|}\hline ';
1031: $result .= $answer_bits[0].'&\vspace*{-4mm}\begin{itemize}';
1032: for (my $i=1;$i<=$#answer_bits;$i++) {
1033: $result.='\item '.$answer_bits[$i].'\vspace*{-7mm}';
1034: }
1035: $result .= ' \end{itemize} \\\\ \hline \end{tabular} \vskip 0 mm ';
1036: } else {
1037: if (!$need_row_start) {
1038: $result .= '</tr>';
1039: }
1040: $result .= '</table>';
1041: }
1042: return $result;
1043: }
1044:
1045: }
1046:
1047: sub showallfoils {
1048: if (defined($env{'form.showallfoils'})) {
1049: my ($symb)=&Apache::lonnet::whichuser();
1050: if (($env{'request.state'} eq 'construct') ||
1051: ($env{'user.adv'} && $symb eq '') ||
1052: ($Apache::lonhomework::viewgrades) ) {
1053: return 1;
1054: }
1055: }
1056: if ($Apache::lonhomework::type eq 'survey') { return 1; }
1057: if ($Apache::lonhomework::type eq 'surveycred') { return 1; }
1058: if ($Apache::lonhomework::type eq 'anonsurvey') { return 1; }
1059: if ($Apache::lonhomework::type eq 'anonsurveycred') { return 1; }
1060:
1061: return 0;
1062: }
1063:
1064: =pod
1065:
1066: =item &getresponse();
1067:
1068: Retreives the current submitted response, helps out in the case of
1069: scantron mode.
1070:
1071: Returns either the exact text of the submission, or a bubbled response
1072: converted to something usable.
1073:
1074: Optional Arguments:
1075: $offset - (defaults to 1) if a problem has more than one bubble
1076: response, pass in the number of the bubble wanted, (the
1077: first bubble associated with a problem has an offset of 1,
1078: the second bubble is 2
1079:
1080: $resulttype - undef -> a number between 0 and 25
1081: 'A is 1' -> a number between 1 and 26
1082: 'letter' -> a letter between 'A' and 'Z'
1083: $lines - undef problem only needs a single line of bubbles.
1084: nonzero Problem wants the first nonempty response in
1085: $lines lines of bubbles.
1086: $bubbles_per_line - Must be provided if lines is defined.. number of
1087: bubbles on a line.
1088:
1089: =cut
1090:
1091: sub getresponse {
1092: my ($offset,$resulttype, $lines, $bubbles_per_line)=@_;
1093: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
1094: my $response;
1095: if (!defined($offset)) {
1096: $offset=1;
1097: } else {
1098: $formparm.=":$offset";
1099: }
1100: if (!defined($lines)) {
1101: $lines = 1;
1102: }
1103: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
1104: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
1105: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
1106: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
1107: if ($env{'form.submitted'} eq 'scantron') {
1108: my $part = $Apache::inputtags::part;
1109: my $id = $Apache::inputtags::response[-1];
1110:
1111: my $line;
1112: my $startline = $env{'form.scantron_questnum_start.'.$part.'.'.$id};
1113: if (!$startline) {
1114: $startline = $Apache::lonxml::counter;
1115: }
1116: for ($line = 0; $line < $lines; $line++) {
1117: my $theline = $startline+$offset-1+$line;
1118: $response = $env{"scantron.$theline.answer"};
1119: if ((defined($response)) && ($response ne "") && ($response ne " ")) {
1120: last;
1121: }
1122:
1123: }
1124:
1125: # save bubbled letter for later
1126: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
1127: $response;
1128: if ($resulttype ne 'letter') {
1129: $response = $let_to_num{$response};
1130: if ($resulttype eq 'A is 1') {
1131: if ($response ne "") {
1132: $response = $response+1;
1133: }
1134: }
1135: if ($response ne "") {
1136: $response += $line * $bubbles_per_line;
1137: }
1138: } else {
1139: if ($response ne "") {
1140: my $raw = $response;
1141: $response = chr(ord($response) + $line * $bubbles_per_line);
1142: }
1143: }
1144:
1145: } else {
1146: $response = $env{$formparm};
1147: }
1148: #
1149: # If we have a nonempty answer, correct the numeric value
1150: # of the answer for the line on which it was found.
1151: #
1152:
1153: return $response;
1154: }
1155:
1156: =pod
1157:
1158: =item &repetition();
1159:
1160: In scalar context:
1161:
1162: returns: the number of lines that are required to encode the weight.
1163: (Default is for 10 bubbles per bubblesheet item; other (integer)
1164: values can be specified by using a custom Bubblesheet format file
1165: with an eighteenth entry (BubblesPerRow) set to the integer
1166: appropriate for the bubblesheets which will be used to assign weights.
1167:
1168: In array context:
1169:
1170: returns: number of lines required to encode weight, and bubbles/line.
1171:
1172: =cut
1173:
1174: sub repetition {
1175: my $id = $Apache::inputtags::part;
1176: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1177: if (!defined($weight) || ($weight eq '')) { $weight=1; }
1178: my $bubbles_per_row;
1179: if (($env{'form.bubbles_per_row'} =~ /^\d+$/) &&
1180: ($env{'form.bubbles_per_row'} > 0)) {
1181: $bubbles_per_row = $env{'form.bubbles_per_row'};
1182: } else {
1183: $bubbles_per_row = 10;
1184: }
1185: my $denominator = $bubbles_per_row;
1186: if (($env{'form.scantron_lastbubblepoints'} == 0) &&
1187: ($bubbles_per_row > 1)) {
1188: $denominator = $bubbles_per_row - 1;
1189: }
1190: my $repetition = int($weight/$denominator);
1191: if ($weight % $denominator != 0) { $repetition++; }
1192: if (wantarray) {
1193: return ($repetition,$bubbles_per_row);
1194: }
1195: return $repetition;
1196:
1197: }
1198:
1199: =pod
1200:
1201: =item &scored_response();
1202:
1203: Sets the results hash elements
1204:
1205: resource.$part_id.$response_id.awarded - to the floating point
1206: number between 0 and 1 that was awarded on the bubbled input
1207:
1208: resource.$part_id.$response_id.awarddetail - to 'ASSIGNED_SCORE'
1209:
1210: Returns
1211:
1212: the number of bubble sheet lines that were used (and likely need to
1213: be passed to &Apache::lonxml::increment_counter()
1214:
1215: Arguments
1216:
1217: $part_id - id of the part to grade
1218: $response_id - id of the response to grade
1219:
1220:
1221: =cut
1222:
1223: sub scored_response {
1224: my ($part,$id)=@_;
1225: my $repetition=&repetition();
1226: my $bubbles_per_row;
1227: if (($env{'form.bubbles_per_row'} =~ /^\d+$/) &&
1228: ($env{'form.bubbles_per_row'} > 0)) {
1229: $bubbles_per_row = $env{'form.bubbles_per_row'};
1230: } else {
1231: $bubbles_per_row = 10;
1232: }
1233: my $score=0;
1234: for (my $i=0;$i<$repetition;$i++) {
1235: # A is 1, B is 2, etc.
1236: my $increase=&Apache::response::getresponse($i+1);
1237: unless (($increase == $bubbles_per_row-1) &&
1238: ($env{'form.scantron_lastbubblepoints'} == 0)) {
1239: # (get response return 0-9 and then we add 1)
1240: if ($increase ne '') {
1241: $score+=$increase+1;
1242: }
1243: }
1244: }
1245: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
1246: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
1247: my $pcr=$score/$weight;
1248: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
1249: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
1250: 'ASSIGNED_SCORE';
1251: return $repetition;
1252: }
1253:
1254: sub whichorder {
1255: my ($max,$randomize,$showall,$hash,$rndseed)=@_;
1256: #&Apache::lonxml::debug("man $max randomize $randomize");
1257: my @names;
1258: if (ref($hash->{'names'}) eq 'ARRAY') {
1259: @names = @{$hash->{'names'}};
1260: }
1261: return if (!@names);
1262: my @whichopt =();
1263: my (%top,@toplist,%bottom,@bottomlist);
1264: if (!($showall || ($randomize eq 'no'))) {
1265: my $current=0;
1266: foreach my $name (@names) {
1267: $current++;
1268: if ($$hash{"$name.location"} eq 'top') {
1269: $top{$name}=$current;
1270: } elsif ($$hash{"$name.location"} eq 'bottom') {
1271: $bottom{$name}=$current;
1272: }
1273: }
1274: }
1275: my $topcount=0;
1276: my $bottomcount=0;
1277: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
1278: && ($#names > -1)) {
1279: #&Apache::lonxml::debug("Have $#whichopt max is $max");
1280: my $aopt;
1281: if ($showall || ($randomize eq 'no')) {
1282: $aopt=0;
1283: } else {
1284: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
1285: }
1286: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
1287: $aopt=splice(@names,$aopt,1);
1288: #&Apache::lonxml::debug("Picked $aopt");
1289: if ($top{$aopt}) {
1290: $toplist[$top{$aopt}]=$aopt;
1291: $topcount++;
1292: } elsif ($bottom{$aopt}) {
1293: $bottomlist[$bottom{$aopt}]=$aopt;
1294: $bottomcount++;
1295: } else {
1296: push (@whichopt,$aopt);
1297: }
1298: }
1299: for (my $i=0;$i<=$#toplist;$i++) {
1300: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
1301: }
1302: for (my $i=0;$i<=$#bottomlist;$i++) {
1303: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
1304: }
1305: return @whichopt;
1306: }
1307:
1308: sub show_answer {
1309: my $part = $Apache::inputtags::part;
1310: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
1311: my $status = $Apache::inputtags::status[-1];
1312: my $canshow = 0;
1313: if ($award =~ /^correct/) {
1314: if (($Apache::lonhomework::history{"resource.$part.awarded"} >= 1) ||
1315: (&Apache::lonnet::EXT("resource.$part.retrypartial") !~/^1|on|yes$/)) {
1316: $canshow = 1;
1317: }
1318: }
1319: return (($canshow && &Apache::lonhomework::show_problem_status())
1320: || $status eq "SHOW_ANSWER");
1321: }
1322:
1323: sub analyze_store_foilgroup {
1324: my ($shown,$attrs)=@_;
1325: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1326: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
1327: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
1328: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
1329: foreach my $attr (@$attrs) {
1330: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
1331: $Apache::response::foilgroup{"$name.".$attr};
1332: }
1333: }
1334: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
1335: }
1336:
1337: sub check_if_computed {
1338: my ($token,$parstack,$safeeval,$name)=@_;
1339: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
1340: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
1341: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1342: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
1343: }
1344: }
1345:
1346: sub pick_foil_for_concept {
1347: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
1348: my @names;
1349: if (ref($Apache::response::conceptgroup{'names'}) eq 'ARRAY') {
1350: @names = @{ $Apache::response::conceptgroup{'names'} };
1351: }
1352: return if (!@names);
1353: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
1354: my $name=$names[$pick];
1355: push @{ $Apache::response::foilgroup{'names'} }, $name;
1356: foreach my $attr (@$attrs) {
1357: $Apache::response::foilgroup{"$name.".$attr} =
1358: $Apache::response::conceptgroup{"$name.".$attr};
1359: }
1360: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
1361: $Apache::response::foilgroup{"$name.concept"} = $concept;
1362: &Apache::lonxml::debug("Selecting $name in $concept");
1363: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1364: if ($target eq 'analyze') {
1365: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
1366: $concept);
1367: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
1368: $Apache::response::conceptgroup{'names'};
1369: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
1370: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
1371: $name);
1372: foreach my $attr (@$attrs) {
1373: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
1374: $Apache::response::conceptgroup{"$name.$attr"};
1375: }
1376: }
1377: }
1378: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
1379: $hinthash->{"$part_id.concept.$concept"}=
1380: $Apache::response::conceptgroup{'names'};
1381:
1382: }
1383:
1384: =pod
1385:
1386: =item get_response_param()
1387:
1388: Get a parameter associated with a problem.
1389: Parameters:
1390: $id - the id of the paramater, either a part id,
1391: or a partid and responspe id joined by _
1392: $name - Name of the parameter to fetch
1393: $default - Default value for the paramter.
1394:
1395: =cut
1396:
1397: sub get_response_param {
1398: my ($id,$name,$default)=@_;
1399: my $parameter;
1400: if ($env{'request.state'} eq 'construct' &&
1401: defined($Apache::inputtags::params{$name})) {
1402: $parameter=$Apache::inputtags::params{$name};
1403: } else {
1404: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
1405: }
1406: if (!defined($parameter) || $parameter eq '') {
1407: $parameter = $default;
1408: }
1409: return $parameter;
1410: }
1411:
1412: sub submitted {
1413: my ($who)=@_;
1414:
1415: # when scatron grading any submission is a submission
1416: if ($env{'form.submitted'} eq 'scantron') { return 1; }
1417: # if the caller only cared if this was a scantron submission
1418: if ($who eq 'scantron') { return 0; }
1419: # if the Submit Answer button for this particular part was pressed
1420: my $partid=$Apache::inputtags::part;
1421: if ($env{'form.submitted'} eq "part_$partid") {
1422: return 1;
1423: }
1424: if ($env{'form.submitted'} eq "yes"
1425: && defined($env{'form.submit_'.$partid})) {
1426: return 1;
1427: }
1428: # Submit All button on a .page was pressed
1429: if (defined($env{'form.all_submit'})) { return 1; }
1430: # otherwise no submission occurred
1431: return 0;
1432: }
1433:
1434: sub add_to_gradingqueue {
1435: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1436: if ( $courseid eq ''
1437: || $symb eq ''
1438: || $env{'request.state'} eq 'construct'
1439: || $Apache::lonhomework::type ne 'problem') {
1440: return;
1441: }
1442:
1443: my %queue_info = ( 'type' => 'problem',
1444: 'time' => time);
1445:
1446: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
1447: $queue_info{'slot'}=
1448: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
1449: }
1450:
1451: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
1452: if ($result ne 'ok') {
1453: &Apache::lonxml::error("add_to_queue said $result");
1454: }
1455: }
1456:
1457: =pod
1458:
1459: =item check_status()
1460:
1461: basically undef and 0 (both false) mean that they still have work to do
1462: and all true values mean that they can't do any more work
1463:
1464: a return of undef means it is unattempted
1465: a return of 0 means it is attmpted and wrong but still has tries
1466: a return of 1 means it is marked correct
1467: a return of 2 means they have exceed maximum number of tries
1468: a return of 3 means it after the answer date
1469:
1470: =cut
1471:
1472: sub check_status {
1473: my ($id)=@_;
1474: if (!defined($id)) { $id=$Apache::inputtags::part; }
1475: my $curtime=&Apache::lonnet::EXT('system.time');
1476: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
1477: my $duedate=&Apache::lonhomework::due_date($id);
1478: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
1479: if ( $opendate && $curtime > $opendate &&
1480: $duedate && $curtime > $duedate &&
1481: $answerdate && $curtime > $answerdate) {
1482: return 3;
1483: }
1484: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
1485: if ($status =~ /^correct/) { return 1; }
1486: if (!$status) { return undef; }
1487: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
1488: if ($maxtries eq '') { $maxtries=2; }
1489: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
1490: if ($curtries < $maxtries) { return 0; }
1491: return 2;
1492: }
1493:
1494: =pod
1495:
1496: =item setup_prior_tries_hash()
1497:
1498: Foreach each past .submission $func is called with 3 arguments
1499: - the mode to set things up for (currently always 'grade')
1500: - the stored .submission string
1501: - The expansion of $data
1502:
1503: $data is an array ref containing elements that are either
1504: - scalars that are other elements of the history hash to pass to $func
1505: - ref to data to be passed untouched to $func
1506:
1507: $questiontype is the questiontype (currently only passed in if
1508: randomizebytry.
1509:
1510: =cut
1511:
1512: sub setup_prior_tries_hash {
1513: my ($func,$data,$questiontype) = @_;
1514: my $part = $Apache::inputtags::part;
1515: my $id = $Apache::inputtags::response[-1];
1516: foreach my $i (1..$Apache::lonhomework::history{'version'}) {
1517: my $partprefix = "$i:resource.$part";
1518: my $sub_key = "$partprefix.$id.submission";
1519: next if (!exists($Apache::lonhomework::history{$sub_key}));
1520: my $type_key = "$partprefix.type";
1521: my $type = $Apache::lonhomework::history{$type_key};
1522: my @other_data;
1523: if (ref($data) eq 'ARRAY') {
1524: foreach my $datum (@{ $data }) {
1525: if (ref($datum)) {
1526: push(@other_data,$datum);
1527: } else {
1528: my $info_key = "$i:resource.$part.$id.$datum";
1529: push(@other_data,$Apache::lonhomework::history{$info_key});
1530: }
1531: }
1532: }
1533: if ($questiontype eq 'randomizetry') {
1534: my $order_key = "$partprefix.$id.foilorder";
1535: my @whichopts = &Apache::lonnet::str2array($Apache::lonhomework::history{$order_key});
1536: if (@whichopts > 0) {
1537: shift(@other_data);
1538: unshift(@other_data,\@whichopts);
1539: }
1540: }
1541: my $output =
1542: &$func('grade',
1543: $Apache::lonhomework::history{$sub_key},
1544: \@other_data);
1545: if (defined($output)) {
1546: $Apache::inputtags::submission_display{$sub_key} = $output;
1547: }
1548: }
1549: }
1550:
1551: 1;
1552: __END__
1553:
1554: =pod
1555:
1556: =cut
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