1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.208 2008/11/25 13:16:17 jms 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::resonse.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::lonmaxima();
57:
58: BEGIN {
59: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
60: }
61:
62: sub start_response {
63: my ($parstack,$safeeval)=@_;
64: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
65: if ($#Apache::inputtags::import > -1) {
66: &Apache::lonxml::debug("Turning :$id: into");
67: $id = join('_',@Apache::inputtags::import).'_'.$id;
68: &Apache::lonxml::debug("New :$id:");
69: }
70: push (@Apache::inputtags::response,$id);
71: push (@Apache::inputtags::responselist,$id);
72: @Apache::inputtags::inputlist=();
73: if ($Apache::inputtags::part eq '' &&
74: !$Apache::lonhomework::ignore_response_errors) {
75: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
76: }
77: if ($Apache::inputtags::response_with_no_part &&
78: $Apache::inputtags::part ne '0') {
79: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
80: }
81: if ($Apache::inputtags::part eq '0') {
82: $Apache::inputtags::response_with_no_part=1;
83: }
84: return $id;
85: }
86:
87: sub end_response {
88: #pop @Apache::inputtags::response;
89: @Apache::inputtags::inputlist=();
90: return '';
91: }
92:
93: sub start_hintresponse {
94: my ($parstack,$safeeval)=@_;
95: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
96: push (@Apache::inputtags::hint,$id);
97: push (@Apache::inputtags::hintlist,$id);
98: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
99: return $id;
100: }
101:
102: sub end_hintresponse {
103: pop @Apache::inputtags::hint;
104: if (defined($Apache::inputtags::paramstack[-1])) {
105: %Apache::inputtags::params=
106: @{ pop(@Apache::inputtags::paramstack) };
107: }
108: return '';
109: }
110:
111: my @randomseeds;
112: sub pushrandomnumber {
113: my $rand_alg=&Apache::lonnet::get_rand_alg();
114: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
115: $rand_alg eq '64bit2') {
116: # do nothing
117: } else {
118: my @seed=&Math::Random::random_get_seed();
119: push(@randomseeds,\@seed);
120: }
121: &Apache::response::setrandomnumber(@_);
122: }
123: sub poprandomnumber {
124: my $rand_alg=&Apache::lonnet::get_rand_alg();
125: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
126: $rand_alg eq '64bit2') {
127: return;
128: }
129: my $seed=pop(@randomseeds);
130: if ($seed) {
131: &Math::Random::random_set_seed(@$seed);
132: } else {
133: &Apache::lonxml::error("Unable to restore random algorithm.");
134: }
135: }
136:
137: sub setrandomnumber {
138: my ($ignore_id2) = @_;
139: my $rndseed;
140: $rndseed=&Apache::structuretags::setup_rndseed();
141: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
142: &Apache::lonxml::debug("randseed $rndseed");
143: # $rndseed=unpack("%32i",$rndseed);
144: my $rand_alg=&Apache::lonnet::get_rand_alg();
145: my ($rndmod,$rndmod2);
146:
147: my ($id1,$id2,$shift_amt);
148: if ($Apache::lonhomework::parsing_a_problem) {
149: $id1=$Apache::inputtags::part;
150: if (defined($Apache::inputtags::response[-1])) {
151: $id2=$Apache::inputtags::response[-1];
152: }
153: $shift_amt=scalar(@Apache::inputtags::responselist);
154: } elsif ($Apache::lonhomework::parsing_a_task) {
155: $id1=&Apache::bridgetask::get_dim_id();
156: if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
157: $id2=$Apache::bridgetask::instance{$id1}[-1];
158: $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
159: } else {
160: $shift_amt=0;
161: }
162: }
163: &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
164: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
165: $rand_alg eq '64bit2') {
166: $rndmod=(&Apache::lonnet::numval($id1) << 10);
167: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
168: } elsif ($rand_alg eq '64bit3') {
169: $rndmod=(&Apache::lonnet::numval2($id1) << 10);
170: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
171: } elsif ($rand_alg eq '64bit4') {
172: my $shift=(4*$shift_amt)%30;
173: $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
174: if (defined($id2)) {
175: $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
176: }
177: } else {
178: ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
179: }
180:
181: if ($rndseed =~/([,:])/) {
182: my $char=$1;
183: use integer;
184: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
185: $num1+=$rndmod;
186: $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
187: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
188: $rndseed=$num1.$char.$num2;
189: } else {
190: $rndseed+=$rndmod;
191: if($Apache::lonnet::_64bit) {
192: use integer;
193: $rndseed=(($rndseed<<32)>>32);
194: }
195: }
196: &Apache::lonxml::debug("randseed $rndmod $rndseed");
197: &Apache::lonnet::setup_random_from_rndseed($rndseed);
198: return '';
199: }
200:
201: sub meta_parameter_write {
202: my ($name,$type,$default,$display)=@_;
203: my $partref=$Apache::inputtags::part;
204: my $result='<parameter part="'.$Apache::inputtags::part.'"';
205: if (defined($Apache::inputtags::response[-1])) {
206: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
207: $partref.='_'.$Apache::inputtags::response[-1];
208: }
209: $result.= ' name="'.$name.'"'.
210: ' type="'.$type.'"'.
211: (defined($default)?' default="'.$default.'"':'').
212: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
213: .'></parameter>'
214: ."\n";
215: return $result;
216: }
217:
218: sub meta_package_write {
219: my $name=shift;
220: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
221: if(defined($Apache::inputtags::response[-1])) {
222: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
223: }
224: $result.=' package="'.$name.'"></parameter>'."\n";
225: return $result;
226: }
227:
228: sub meta_stores_write {
229: my ($name,$type,$display)=@_;
230: my $partref=$Apache::inputtags::part;
231: my $result = '<stores part="'.$Apache::inputtags::part.'"';
232: if (defined($Apache::inputtags::response[-1])) {
233: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
234: $partref.='_'.$Apache::inputtags::response[-1];
235: }
236: $result.= ' name="'.$name.'"'.
237: ' type="'.$type.'"'.
238: ' display="'.$display.' [Part: '.$partref.']"'.
239: "></stores>\n";
240: }
241:
242: sub mandatory_part_meta {
243: =pod
244:
245: =item meta_part_order
246:
247: Autogenerate metadata for mandatory
248: input (from RAT or lonparmset) and
249: output (to lonspreadsheet)
250: of each part
251: #
252: return
253: &meta_parameter_write('opendate','date_start','',
254: 'Opening Date').
255: &meta_parameter_write('duedate','date_end','',
256: 'Due Date').
257: &meta_parameter_write('answerdate','date_start','',
258: 'Show Answer Date').
259: &meta_parameter_write('weight','int_zeropos','',
260: 'Available Points').
261: &meta_parameter_write('maxtries','int_pos','',
262: 'Maximum Number of Tries').
263: &meta_package_write('part').
264: &meta_stores_write('solved','string',
265: 'Problem Status').
266: &meta_stores_write('tries','int_zeropos',
267: 'Number of Attempts').
268: &meta_stores_write('awarded','float',
269: 'Partial Credit Factor');
270:
271: Note: responseid-specific data 'submission' and 'awarddetail'
272: not available to spreadsheet -> skip here
273:
274: =cut
275:
276: }
277:
278: sub meta_part_order {
279: if (@Apache::inputtags::partlist) {
280: my @parts=@Apache::inputtags::partlist;
281: shift(@parts);
282: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
283: } else {
284: return '<partorder>0</partorder>'."\n";
285: }
286: }
287:
288: sub meta_response_order {
289: if (@Apache::inputtags::responselist) {
290: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
291: '</responseorder>'."\n";
292: }
293: }
294:
295: sub check_for_previous {
296: my ($curresponse,$partid,$id,$last) = @_;
297: my %previous;
298: $previous{'used'} = 0;
299: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
300: if ($key =~ /resource\.$partid\.$id\.submission$/) {
301: if ( $last && $key =~ /^(\d+):/ ) {
302: next if ($1 >= $last);
303: }
304: &Apache::lonxml::debug("Trying $key");
305: my $pastresponse=$Apache::lonhomework::history{$key};
306: if ($pastresponse eq $curresponse) {
307: $previous{'used'} = 1;
308: my $history;
309: if ( $key =~ /^(\d+):/ ) {
310: $history=$1;
311: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
312: $previous{'last'}='0';
313: push(@{ $previous{'version'} },$history);
314: } else {
315: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
316: $previous{'last'}='1';
317: }
318: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
319: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
320: }
321: }
322: }
323: &Apache::lonhomework::showhash(%previous);
324: return %previous;
325: }
326:
327: sub handle_previous {
328: my ($previous,$ad)=@_;
329: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
330: if ($$previous{'last'}) {
331: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
332: push(@Apache::inputtags::previous_version,$$previous{'version'});
333: } elsif ($Apache::lonhomework::type ne 'survey') {
334: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
335: push(@Apache::inputtags::previous_version,$$previous{'version'});
336: }
337: }
338: }
339:
340: sub view_or_modify {
341: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
342: my $myself=0;
343: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
344: $myself=1;
345: }
346: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
347: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
348: if ($mgr) { return "M"; }
349: if ($vgr) { return "V"; }
350: if ($myself) { return "V"; }
351: return '';
352: }
353:
354: sub start_dataresponse {
355: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
356: my $id = &Apache::response::start_response($parstack,$safeeval);
357: my $result;
358: if ($target eq 'web') {
359: $result = $token->[2]->{'display'}.':';
360: } elsif ($target eq 'meta') {
361: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
362: $token->[2]->{'type'},
363: $token->[2]->{'display'});
364: $result .= &Apache::response::meta_package_write('dataresponse');
365: }
366: return $result;
367: }
368:
369: sub end_dataresponse {
370: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
371: my $result;
372: if ( $target eq 'web' ) {
373: } elsif ($target eq 'grade' ) {
374: if ( defined $env{'form.submitted'}) {
375: my ($symb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
376: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
377: if ($allowed) {
378: &Apache::response::setup_params('dataresponse',$safeeval);
379: my $partid = $Apache::inputtags::part;
380: my $id = $Apache::inputtags::response['-1'];
381: my $response = $env{'form.HWVAL_'.$id};
382: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
383: if ( $response =~ /[^\s]/) {
384: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
385: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
386: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
387: }
388: } else {
389: $result='Not Permitted to change values.'
390: }
391: }
392: }
393: &Apache::response::end_response;
394: return $result;
395: }
396:
397: sub start_customresponse {
398: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
399: my $id = &Apache::response::start_response($parstack,$safeeval);
400: push(@Apache::lonxml::namespace,'customresponse');
401: my $result;
402: @Apache::response::custom_answer=();
403: @Apache::response::custom_answer_type=();
404: &Apache::lonxml::register('Apache::response',('answer'));
405: if ($target eq 'web') {
406: if ( &Apache::response::show_answer() ) {
407: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
408: $safeeval);
409: $Apache::inputtags::answertxt{$id}=[$answer];
410: }
411: } elsif ($target eq 'edit') {
412: $result.=&Apache::edit::tag_start($target,$token);
413: $result.=&Apache::edit::text_arg('String to display for answer:',
414: 'answerdisplay',$token);
415: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
416: } elsif ($target eq 'modified') {
417: my $constructtag;
418: $constructtag=&Apache::edit::get_new_args($token,$parstack,
419: $safeeval,'answerdisplay');
420: if ($constructtag) {
421: $result = &Apache::edit::rebuild_tag($token);
422: }
423: } elsif ($target eq 'answer' || $target eq 'grade') {
424: &Apache::response::reset_params();
425: } elsif ($target eq 'meta') {
426: $result .= &Apache::response::meta_package_write('customresponse');
427: }
428: return $result;
429: }
430:
431: sub end_customresponse {
432: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
433: my $result;
434: my $part=$Apache::inputtags::part;
435: my $id=$Apache::inputtags::response[-1];
436: if ( $target eq 'grade' && &Apache::response::submitted() ) {
437: my $response = &Apache::response::getresponse();
438: if ($Apache::lonhomework::type eq 'exam' ||
439: &Apache::response::submitted('scantron')) {
440: &Apache::response::scored_response($part,$id);
441: } elsif ( $response =~ /[^\s]/ &&
442: $Apache::response::custom_answer_type[-1] eq 'loncapa/perl') {
443: if (!$Apache::lonxml::default_homework_loaded) {
444: &Apache::lonxml::default_homework_load($safeeval);
445: }
446: my %previous = &Apache::response::check_for_previous($response,
447: $part,$id);
448: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
449: $response;
450: my $error;
451: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
452: $response;
453:
454: my $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer[-1].'}',$safeeval);
455: if (!&Apache::inputtags::valid_award($award)) {
456: $error = $award;
457: $award = 'ERROR';
458: }
459: &Apache::response::handle_previous(\%previous,$award);
460: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
461: $award;
462: if ($error) {
463: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
464: $error;
465: }
466: }
467: } elsif ( $target eq 'answer') {
468: $result = &Apache::response::answer_header('customresponse');
469: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
470: $safeeval);
471: if ($env{'form.answer_output_mode'} ne 'tex') {
472: $answer = '<b>'.$answer.'</b>';
473: }
474: $result .= &Apache::response::answer_part('customresponse',$answer);
475: $result .= &Apache::response::answer_footer('customresponse');
476: }
477: if ($target eq 'web') {
478: &setup_prior_tries_hash(\&format_prior_response_math);
479: }
480: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
481: $target eq 'tex' || $target eq 'analyze') {
482: &Apache::lonxml::increment_counter(&Apache::response::repetition(),
483: "$part.$id");
484: if ($target eq 'analyze') {
485: $Apache::lonhomework::analyze{"$part.$id.type"} = 'customresponse';
486: &Apache::lonhomework::set_bubble_lines();
487: }
488: }
489: pop(@Apache::lonxml::namespace);
490: pop(@Apache::response::custom_answer);
491: pop(@Apache::response::custom_answer_type);
492: &Apache::lonxml::deregister('Apache::response',('answer'));
493: &Apache::response::end_response();
494: return $result;
495: }
496:
497: sub format_prior_response_custom {
498: my ($mode,$answer) =@_;
499: return '<span class="LC_prior_custom">'.
500: &HTML::Entities::encode($answer,'"<>&').'</span>';
501: }
502:
503: sub start_mathresponse {
504: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
505: my $id = &Apache::response::start_response($parstack,$safeeval);
506: push(@Apache::lonxml::namespace,'mathresponse');
507: my $result;
508: @Apache::response::custom_answer=();
509: @Apache::response::custom_answer_type=();
510: &Apache::lonxml::register('Apache::response',('answer'));
511: if ($target eq 'web') {
512: if ( &Apache::response::show_answer() ) {
513: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
514: $safeeval);
515: $Apache::inputtags::answertxt{$id}=[$answer];
516: }
517:
518: } elsif ($target eq 'edit') {
519: $result.=&Apache::edit::tag_start($target,$token);
520: $result.=&Apache::edit::text_arg('String to display for answer:',
521: 'answerdisplay',$token);
522: $result.=&Apache::edit::select_arg('Algebra System:',
523: 'cas',
524: ['maxima'],
525: $token);
526: $result.=&Apache::edit::text_arg('Argument Array:',
527: 'args',$token).
528: &Apache::loncommon::help_open_topic('Maxima_Argument_Array');
529: $result.=&Apache::edit::text_arg('Libraries:',
530: 'libraries',$token).
531: &Apache::loncommon::help_open_topic('Maxima_Libraries');
532: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
533: } elsif ($target eq 'modified') {
534: my $constructtag;
535: $constructtag=&Apache::edit::get_new_args($token,$parstack,
536: $safeeval,'answerdisplay','cas','args','libraries');
537: if ($constructtag) {
538: $result = &Apache::edit::rebuild_tag($token);
539: }
540: } elsif ($target eq 'answer' || $target eq 'grade') {
541: &Apache::response::reset_params();
542: } elsif ($target eq 'meta') {
543: $result .= &Apache::response::meta_package_write('mathresponse');
544: }
545: return $result;
546: }
547:
548: sub edit_mathresponse_button {
549: my ($id,$field)=@_;
550: my $button=&mt('Edit Answer');
551: # my $helplink=&Apache::loncommon::help_open_topic('Formula_Editor');
552: my $iconpath=$Apache::lonnet::perlvar{'lonIconsURL'};
553: return(<<ENDFORMULABUTTON);
554: <script language="JavaScript">
555: function edit_${id}_${field} (textarea) {
556: thenumber = textarea;
557: thedata = document.forms['lonhomework'].elements[textarea].value;
558: newwin = window.open("/adm/dragmath/applet/MaximaPopup.html","","width=565,height=400,resizable");
559: }
560: </script>
561: <a href="javascript:edit_${id}_${field}('${field}');void(0);"><img class="stift" src='$iconpath/stift.gif' alt='$button' title='$button'/></a>
562: ENDFORMULABUTTON
563: }
564:
565: sub end_mathresponse {
566: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
567: my $result;
568: my $part=$Apache::inputtags::part;
569: my $id=$Apache::inputtags::response[-1];
570: if ( $target eq 'grade' && &Apache::response::submitted() ) {
571: my $response = &Apache::response::getresponse();
572: if ( $response =~ /[^\s]/ ) {
573: if (!$Apache::lonxml::default_homework_loaded) {
574: &Apache::lonxml::default_homework_load($safeeval);
575: }
576: my %previous = &Apache::response::check_for_previous($response,
577: $part,$id);
578: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
579: $response;
580: my $error;
581: my $award;
582: my $cas = &Apache::lonxml::get_param('cas',$parstack,$safeeval);
583: if ($cas eq 'maxima') {
584: my $args = [&Apache::lonxml::get_param_var('args',$parstack,$safeeval)];
585: $award=&Apache::lonmaxima::maxima_run($Apache::response::custom_answer[-1],$response,$args,
586: &Apache::lonxml::get_param('libraries',$parstack,$safeeval));
587: }
588: if (!&Apache::inputtags::valid_award($award)) {
589: $error = $award;
590: $award = 'ERROR';
591: }
592: &Apache::response::handle_previous(\%previous,$award);
593: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
594: $award;
595: if ($error) {
596: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
597: $error;
598: }
599: }
600: }
601: if ($target eq 'web') {
602: &setup_prior_tries_hash(\&format_prior_response_math);
603: my $partid = $Apache::inputtags::part;
604: my $id = $Apache::inputtags::response[-1];
605: if (($Apache::inputtags::status['-1'] eq 'CAN_ANSWER')
606: && (&Apache::lonnet::EXT('resource.'.$partid.'_'.$id.'.turnoffeditor') ne 'yes')) {
607: $result.=&edit_mathresponse_button($id,"HWVAL_$id");
608: }
609: }
610:
611: pop(@Apache::lonxml::namespace);
612: pop(@Apache::response::custom_answer);
613: pop(@Apache::response::custom_answer_type);
614: &Apache::lonxml::deregister('Apache::response',('answer'));
615: &Apache::response::end_response();
616: return $result;
617: }
618:
619: sub format_prior_response_math {
620: my ($mode,$answer) =@_;
621: return '<span class="LC_prior_math">'.
622: &HTML::Entities::encode($answer,'"<>&').'</span>';
623: }
624:
625: sub implicit_multiplication {
626: my ($expression)=@_;
627: # Escape scientific notation, so 3e8 does not become 3*e*8
628: # 3e8 -> 3&8; 3e-8 -> 3&-8; 3E+8 -> e&+8
629: $expression=~s/(\d+)e([\+\-]*\d+)/$1\&\($2\)/gsi;
630: # 3x10^8 -> 3&8; 3*10^-8 -> 3&-8
631: $expression=~s/(\d+)(?:x|\*)10(?:\^|\*\*)([\+\-]*\d+)/$1\&\($2\)/gsi;
632: # Fill in multiplication signs
633: # a b -> a*b;3 b -> 3*b;3 4 -> 3*4
634: $expression=~s/([A-Za-z0-9])\s+(?=[A-Za-z0-9])/$1\*/gs;
635: # )( -> )*(; ) ( -> )*(
636: $expression=~s/\)\s*\(/\)\*\(/gs;
637: # 3a -> 3*a; 3( -> 3*(; 3 ( -> 3*(; 3A -> 3*A
638: $expression=~s/(\d)\s*([a-zA-Z\(])/$1\*$2/gs;
639: # a ( -> a*(
640: $expression=~s/([A-Za-z0-9])\s+\(/$1\*\(/gs;
641: # )a -> )*a; )3 -> )*3; ) 3 -> )*3
642: $expression=~s/\)\s*([A-Za-z0-9])/\)\*$1/gs;
643: # 3&8 -> 3e8; 3&-4 -> 3e-4
644: $expression=~s/(\d+)\&\(([\+\-]*\d+)\)/$1e$2/gs;
645: return $expression;
646: }
647:
648: sub start_answer {
649: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
650: my $result;
651: push(@Apache::response::custom_answer,
652: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser));
653: push(@Apache::response::custom_answer_type,
654: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval)));
655: $Apache::response::custom_answer_type[-1] =~ s/\s+//g;
656: if ($target eq "edit" ) {
657: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
658: $result.=&Apache::edit::editfield($token->[1],
659: $Apache::response::custom_answer[-1],
660: '',80,4);
661: } elsif ( $target eq "modified" ) {
662: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
663: }
664: return $result;
665: }
666:
667: sub end_answer {
668: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
669: if ($target eq 'edit' ) {
670: return &Apache::edit::end_table();
671: }
672: }
673:
674: sub decide_package {
675: my ($tagstack)=@_;
676: my $package;
677: if ($$tagstack[-1] eq 'parameter') {
678: $package='part';
679: } else {
680: my $i=-1;
681: while (defined($$tagstack[$i])) {
682: if ($$tagstack[$i] =~ /(response|hint)$/) {
683: $package=$$tagstack[$i];
684: last;
685: }
686: $i--;
687: }
688: }
689: return $package;
690: }
691:
692: sub start_responseparam {
693: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
694: my $result='';
695: if ($target eq 'meta') {
696: $result = &meta_parameter_write($token->[2]->{'name'},
697: $token->[2]->{'type'},
698: $token->[2]->{'default'},
699: $token->[2]->{'description'});
700: } elsif ($target eq 'edit') {
701: $result.=&Apache::edit::tag_start($target,$token);
702: my $optionlist;
703: my $package=&decide_package($tagstack);
704: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
705: if ($key =~ /^\Q$package\E&(.*)&display$/) {
706: $optionlist.='<option value="'.$1.'">'.
707: $Apache::lonnet::packagetab{$key}.'</option>';
708: }
709: }
710: if (defined($optionlist)) {
711: $result.=&mt('Use template:').' <select name="'.
712: &Apache::edit::html_element_name('parameter_package').'">'.
713: '<option value=""></option>'.$optionlist.'</select><br />';
714: }
715: $result.=&Apache::edit::text_arg('Name:','name',$token).
716: &Apache::edit::text_arg('Type:','type',$token).
717: &Apache::edit::text_arg('Description:','description',$token).
718: &Apache::edit::text_arg('Default:','default',$token).
719: "</td></tr>";
720: $result.=&Apache::edit::end_table;
721: } elsif ($target eq 'modified') {
722: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
723: $safeeval,'name','type',
724: 'description','default');
725: my $element=&Apache::edit::html_element_name('parameter_package');
726: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
727: my $name=$env{"form.$element"};
728: my $tag=&decide_package($tagstack);
729: $token->[2]->{'name'}=$name;
730: $token->[2]->{'type'}=
731: $Apache::lonnet::packagetab{"$tag&$name&type"};
732: $token->[2]->{'description'}=
733: $Apache::lonnet::packagetab{"$tag&$name&display"};
734: $token->[2]->{'default'}=
735: $Apache::lonnet::packagetab{"$tag&$name&default"};
736: $token->[3] = ['name','type','description','default'];
737: $constructtag=1;
738: }
739: if ($constructtag) {
740: $result = &Apache::edit::rebuild_tag($token);
741: }
742: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
743: $target eq 'tex' || $target eq 'analyze' ) {
744: if ($env{'request.state'} eq 'construct') {
745: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
746: my $default=&Apache::lonxml::get_param('default',$parstack,
747: $safeeval);
748: if ($name) {$Apache::inputtags::params{$name}=$default;}
749: }
750: }
751: return $result;
752: }
753:
754: sub end_responseparam {
755: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
756: if ($target eq 'edit') { return ('','no'); }
757: return '';
758: }
759:
760: sub start_parameter {
761: return &start_responseparam(@_);
762: }
763:
764: sub end_parameter {
765: return &end_responseparam(@_);
766: }
767:
768: sub reset_params {
769: %Apache::inputtags::params=();
770: }
771:
772: sub setup_params {
773: my ($tag,$safeeval) = @_;
774:
775: if ($env{'request.state'} eq 'construct') { return; }
776: my %paramlist=();
777: foreach my $key (keys(%Apache::lonnet::packagetab)) {
778: if ($key =~ /^\Q$tag\E/) {
779: my ($package,$name) = split(/&/,$key);
780: $paramlist{$name}=1;
781: }
782: }
783: foreach my $key (keys(%paramlist)) {
784: my $entry= 'resource.'.$Apache::inputtags::part;
785: if (defined($Apache::inputtags::response[-1])) {
786: $entry.='_'.$Apache::inputtags::response[-1];
787: }
788: $entry.='.'.$key;
789: &Apache::lonxml::debug("looking for $entry");
790: my $value = &Apache::lonnet::EXT("$entry");
791: &Apache::lonxml::debug("$key has value :$value:");
792: if ($value eq 'con_lost' || $value =~ /^error:/) {
793: &Apache::lonxml::debug("using nothing");
794: $Apache::inputtags::params{$key}='';
795: } else {
796: my $string="{return qq\0".$value."\0}";
797: my $newvalue=&Apache::run::run($string,$safeeval,1);
798: if (defined($newvalue)) { $value=$newvalue; }
799: $Apache::inputtags::params{$key}=$value;
800: }
801: }
802: }
803:
804: {
805: my @answer_bits;
806: my $need_row_start;
807:
808: sub answer_header {
809: my ($type,$increment,$rows) = @_;
810: my $result;
811: if ($env{'form.answer_output_mode'} eq 'tex') {
812: undef(@answer_bits);
813: my $bit;
814: if ($Apache::lonhomework::type eq 'exam') {
815: $bit = ($Apache::lonxml::counter+$increment).') ';
816: } else {
817: $bit .= ' Answer for Part: \verb|'.
818: $Apache::inputtags::part.'| ';
819: }
820: push(@answer_bits,$bit);
821: } else {
822: my $td = '<td '.(defined($rows)?'rowspan="'.$rows.'"':'').'>';
823: $result = '<table border="1"><tr>';
824: if ($Apache::lonhomework::type eq 'exam') {
825: $result .= $td.($Apache::lonxml::counter+$increment). ')</td>';
826: } else {
827: $result .= $td.&mt('Answer for Part: [_1]',
828: $Apache::inputtags::part).'</td>';
829: }
830: $result .= "\n";
831: $need_row_start = 0;
832: }
833: return $result;
834: }
835:
836: sub next_answer {
837: my ($type) = @_;
838: my $result;
839: if ($env{'form.answer_output_mode'} eq 'tex') {
840: # FIXME ... need to do something with tex mode
841: } else {
842: $result .= "</tr>";
843: $need_row_start = 1;
844: }
845: return $result;
846: }
847:
848: sub answer_part {
849: my ($type,$answer,$args) = @_;
850: my $result;
851: if ($env{'form.answer_output_mode'} eq 'tex') {
852: if (!$args->{'no_verbatim'}) {
853: my $to_use='|';
854: foreach my $value (32..126) {
855: my $char=pack('c',$value);
856: if ($answer !~ /\Q$char\E/) {
857: $to_use=$char;
858: last;
859: }
860: }
861: my $fullanswer=$answer;
862: $answer='';
863: foreach my $element (split(/[\;]/,$fullanswer)) {
864: if ($element ne '') {
865: $answer.= '\verb'.$to_use.$element.$to_use.' \newline';
866: }
867: }
868: }
869: if ($answer ne '') {
870: push(@answer_bits,$answer);
871: }
872: } else {
873: if ($need_row_start) {
874: $result .= '<tr>';
875: $need_row_start = 0;
876: }
877: $result .= '<td>'.$answer.'</td>';
878: }
879: return $result;
880: }
881:
882: sub answer_footer {
883: my ($type) = @_;
884: my $result;
885: if ($env{'form.answer_output_mode'} eq 'tex') {
886: $result = ' \vskip 0 mm \noindent \begin{tabular}{|p{1.5cm}|p{6.8cm}|}\hline ';
887: $result .= $answer_bits[0].'&\vspace*{-4mm}\begin{itemize}';
888: for (my $i=1;$i<=$#answer_bits;$i++) {
889: $result.='\item '.$answer_bits[$i].'\vspace*{-7mm}';
890: }
891: $result .= ' \end{itemize} \\\\ \hline \end{tabular} \vskip 0 mm ';
892: } else {
893: if (!$need_row_start) {
894: $result .= '</tr>';
895: }
896: $result .= '</table>';
897: }
898: return $result;
899: }
900:
901: }
902:
903: sub showallfoils {
904: if (defined($env{'form.showallfoils'})) {
905: my ($symb)=&Apache::lonnet::whichuser();
906: if (($env{'request.state'} eq 'construct') ||
907: ($env{'user.adv'} && $symb eq '') ||
908: ($Apache::lonhomework::viewgrades) ) {
909: return 1;
910: }
911: }
912: if ($Apache::lonhomework::type eq 'survey') { return 1; }
913: return 0;
914: }
915:
916: =pod
917:
918: =item &getresponse($offset,$resulttype);
919:
920: Retreives the current submitted response, helps out in the case of
921: scantron mode.
922:
923: Returns either the exact text of the submission, or a bubbled response
924: converted to something usable.
925:
926: Optional Arguments:
927: $offset - (defaults to 1) if a problem has more than one bubble
928: response, pass in the number of the bubble wanted, (the
929: first bubble associated with a problem has an offset of 1,
930: the second bubble is 2
931:
932: $resulttype - undef -> a number between 0 and 25
933: 'A is 1' -> a number between 1 and 26
934: 'letter' -> a letter between 'A' and 'Z'
935: $lines - undef problem only needs a single line of bubbles.
936: nonzero Problem wants the first nonempty response in
937: $lines lines of bubbles.
938: $bubbles_per_line - Must be provided if lines is defined.. number of
939: bubbles on a line.
940:
941: =cut
942:
943: sub getresponse {
944: my ($offset,$resulttype, $lines, $bubbles_per_line)=@_;
945: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
946: my $response;
947: if (!defined($offset)) {
948: $offset=1;
949: } else {
950: $formparm.=":$offset";
951: }
952: if (!defined($lines)) {
953: $lines = 1;
954: }
955: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
956: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
957: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
958: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
959: if ($env{'form.submitted'} eq 'scantron') {
960: my $part = $Apache::inputtags::part;
961: my $id = $Apache::inputtags::response[-1];
962:
963: my $line;
964: for ($line = 0; $line < $lines; $line++) {
965: my $theline = $Apache::lonxml::counter+$offset-1+$line;
966: $response = $env{"scantron.$theline.answer"};
967: if ((defined($response)) && ($response ne "") && ($response ne " ")) {
968: last;
969: }
970:
971: }
972:
973: # save bubbled letter for later
974: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
975: $response;
976: if ($resulttype ne 'letter') {
977: if ($resulttype eq 'A is 1') {
978: $response = $let_to_num{$response}+1;
979: } else {
980: $response = $let_to_num{$response};
981: }
982: if ($response ne "") {
983: $response += $line * $bubbles_per_line;
984: }
985: } else {
986: if ($response ne "") {
987: $response = chr(ord($response) + $line * $bubbles_per_line);
988: }
989: }
990:
991: } else {
992: $response = $env{$formparm};
993: }
994: #
995: # If we have a nonempty answer, correct the numeric value
996: # of the answer for the line on which it was found.
997: #
998:
999: return $response;
1000: }
1001:
1002: =pod
1003:
1004: =item &repetition();
1005:
1006: Returns the number of lines that are required to encode the weight.
1007: (Currently expects that there are 10 bubbles per line)
1008:
1009: =cut
1010:
1011: sub repetition {
1012: my $id = $Apache::inputtags::part;
1013: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
1014: if (!defined($weight) || ($weight eq '')) { $weight=1; }
1015: my $repetition = int($weight/10);
1016: if ($weight % 10 != 0) { $repetition++; }
1017: return $repetition;
1018: }
1019:
1020: =pod
1021:
1022: =item &scored_response($part_id,$response_id);
1023:
1024: Sets the results hash elements
1025:
1026: resource.$part_id.$response_id.awarded - to the floating point
1027: number between 0 and 1 that was awarded on the bubbled input
1028:
1029: resource.$part_id.$response_id.awarddetail - to 'ASSIGNED_SCORE'
1030:
1031: Returns
1032:
1033: the number of bubble sheet lines that were used (and likely need to
1034: be passed to &Apache::lonxml::increment_counter()
1035:
1036: Arguments
1037:
1038: $part_id - id of the part to grade
1039: $response_id - id of the response to grade
1040:
1041:
1042: =cut
1043:
1044: sub scored_response {
1045: my ($part,$id)=@_;
1046: my $repetition=&repetition();
1047: my $score=0;
1048: for (my $i=0;$i<$repetition;$i++) {
1049: # A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
1050: my $increase=&Apache::response::getresponse($i+1);
1051: if ($increase ne '') { $score+=$increase+1; }
1052: }
1053: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
1054: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
1055: my $pcr=$score/$weight;
1056: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
1057: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
1058: 'ASSIGNED_SCORE';
1059: return $repetition;
1060: }
1061:
1062: sub whichorder {
1063: my ($max,$randomize,$showall,$hash)=@_;
1064: #&Apache::lonxml::debug("man $max randomize $randomize");
1065: if (!defined(@{ $$hash{'names'} })) { return; }
1066: my @names = @{ $$hash{'names'} };
1067: my @whichopt =();
1068: my (%top,@toplist,%bottom,@bottomlist);
1069: if (!($showall || ($randomize eq 'no'))) {
1070: my $current=0;
1071: foreach my $name (@names) {
1072: $current++;
1073: if ($$hash{"$name.location"} eq 'top') {
1074: $top{$name}=$current;
1075: } elsif ($$hash{"$name.location"} eq 'bottom') {
1076: $bottom{$name}=$current;
1077: }
1078: }
1079: }
1080: my $topcount=0;
1081: my $bottomcount=0;
1082: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
1083: && ($#names > -1)) {
1084: #&Apache::lonxml::debug("Have $#whichopt max is $max");
1085: my $aopt;
1086: if ($showall || ($randomize eq 'no')) {
1087: $aopt=0;
1088: } else {
1089: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
1090: }
1091: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
1092: $aopt=splice(@names,$aopt,1);
1093: #&Apache::lonxml::debug("Picked $aopt");
1094: if ($top{$aopt}) {
1095: $toplist[$top{$aopt}]=$aopt;
1096: $topcount++;
1097: } elsif ($bottom{$aopt}) {
1098: $bottomlist[$bottom{$aopt}]=$aopt;
1099: $bottomcount++;
1100: } else {
1101: push (@whichopt,$aopt);
1102: }
1103: }
1104: for (my $i=0;$i<=$#toplist;$i++) {
1105: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
1106: }
1107: for (my $i=0;$i<=$#bottomlist;$i++) {
1108: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
1109: }
1110: return @whichopt;
1111: }
1112:
1113: sub show_answer {
1114: my $part = $Apache::inputtags::part;
1115: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
1116: my $status = $Apache::inputtags::status[-1];
1117: return ( ($award =~ /^correct/
1118: && &Apache::lonhomework::show_problem_status())
1119: || $status eq "SHOW_ANSWER");
1120: }
1121:
1122: sub analyze_store_foilgroup {
1123: my ($shown,$attrs)=@_;
1124: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1125: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
1126: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
1127: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
1128: foreach my $attr (@$attrs) {
1129: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
1130: $Apache::response::foilgroup{"$name.".$attr};
1131: }
1132: }
1133: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
1134: }
1135:
1136: sub check_if_computed {
1137: my ($token,$parstack,$safeeval,$name)=@_;
1138: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
1139: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
1140: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1141: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
1142: }
1143: }
1144:
1145: sub pick_foil_for_concept {
1146: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
1147: if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
1148: my @names = @{ $Apache::response::conceptgroup{'names'} };
1149: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
1150: my $name=$names[$pick];
1151: push @{ $Apache::response::foilgroup{'names'} }, $name;
1152: foreach my $attr (@$attrs) {
1153: $Apache::response::foilgroup{"$name.".$attr} =
1154: $Apache::response::conceptgroup{"$name.".$attr};
1155: }
1156: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
1157: $Apache::response::foilgroup{"$name.concept"} = $concept;
1158: &Apache::lonxml::debug("Selecting $name in $concept");
1159: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
1160: if ($target eq 'analyze') {
1161: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
1162: $concept);
1163: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
1164: $Apache::response::conceptgroup{'names'};
1165: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
1166: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
1167: $name);
1168: foreach my $attr (@$attrs) {
1169: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
1170: $Apache::response::conceptgroup{"$name.$attr"};
1171: }
1172: }
1173: }
1174: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
1175: $hinthash->{"$part_id.concept.$concept"}=
1176: $Apache::response::conceptgroup{'names'};
1177:
1178: }
1179:
1180: =pod
1181:
1182: =item get_response_param()
1183:
1184: Get a parameter associated with a problem.
1185: Parameters:
1186: $id - the id of the paramater, either a part id,
1187: or a partid and responspe id joined by _
1188: $name - Name of the parameter to fetch
1189: $default - Default value for the paramter.
1190:
1191: =cut
1192:
1193: sub get_response_param {
1194: my ($id,$name,$default)=@_;
1195: my $parameter;
1196: if ($env{'request.state'} eq 'construct' &&
1197: defined($Apache::inputtags::params{$name})) {
1198: $parameter=$Apache::inputtags::params{$name};
1199: } else {
1200: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
1201: }
1202: if (!defined($parameter) || $parameter eq '') {
1203: $parameter = $default;
1204: }
1205: return $parameter;
1206: }
1207:
1208: sub submitted {
1209: my ($who)=@_;
1210:
1211: # when scatron grading any submission is a submission
1212: if ($env{'form.submitted'} eq 'scantron') { return 1; }
1213: # if the caller only cared if this was a scantron submission
1214: if ($who eq 'scantron') { return 0; }
1215: # if the Submit Answer button for this particular part was pressed
1216: my $partid=$Apache::inputtags::part;
1217: if ($env{'form.submitted'} eq "part_$partid") {
1218: return 1;
1219: }
1220: if ($env{'form.submitted'} eq "yes"
1221: && defined($env{'form.submit_'.$partid})) {
1222: return 1;
1223: }
1224: # Submit All button on a .page was pressed
1225: if (defined($env{'form.all_submit'})) { return 1; }
1226: # otherwise no submission occurred
1227: return 0;
1228: }
1229:
1230: sub add_to_gradingqueue {
1231: my ($symb,$courseid,$domain,$name) = &Apache::lonnet::whichuser();
1232: if ( $courseid eq ''
1233: || $symb eq ''
1234: || $env{'request.state'} eq 'construct'
1235: || $Apache::lonhomework::type ne 'problem') {
1236: return;
1237: }
1238:
1239: my %queue_info = ( 'type' => 'problem',
1240: 'time' => time);
1241:
1242: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
1243: $queue_info{'slot'}=
1244: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
1245: }
1246:
1247: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
1248: if ($result ne 'ok') {
1249: &Apache::lonxml::error("add_to_queue said $result");
1250: }
1251: }
1252:
1253: =pod
1254:
1255: =item check_status()
1256:
1257: basically undef and 0 (both false) mean that they still have work to do
1258: and all true values mean that they can't do any more work
1259:
1260: a return of undef means it is unattempted
1261: a return of 0 means it is attmpted and wrong but still has tries
1262: a return of 1 means it is marked correct
1263: a return of 2 means they have exceed maximum number of tries
1264: a return of 3 means it after the answer date
1265:
1266: =cut
1267:
1268: sub check_status {
1269: my ($id)=@_;
1270: if (!defined($id)) { $id=$Apache::inputtags::part; }
1271: my $curtime=&Apache::lonnet::EXT('system.time');
1272: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
1273: my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
1274: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
1275: if ( $opendate && $curtime > $opendate &&
1276: $duedate && $curtime > $duedate &&
1277: $answerdate && $curtime > $answerdate) {
1278: return 3;
1279: }
1280: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
1281: if ($status =~ /^correct/) { return 1; }
1282: if (!$status) { return undef; }
1283: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
1284: if ($maxtries eq '') { $maxtries=2; }
1285: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
1286: if ($curtries < $maxtries) { return 0; }
1287: return 2;
1288: }
1289:
1290: =pod
1291:
1292: =item setup_prior_tries_hash($func,$data)
1293:
1294: Foreach each past .submission $func is called with 3 arguments
1295: - the mode to set things up for (currently always 'grade')
1296: - the stored .submission string
1297: - The expansion of $data
1298:
1299: $data is an array ref containing elements that are either
1300: - scalars that are other elements of the history hash to pass to $func
1301: - ref to data to be passed untouched to $func
1302:
1303: =cut
1304:
1305: sub setup_prior_tries_hash {
1306: my ($func,$data) = @_;
1307: my $part = $Apache::inputtags::part;
1308: my $id = $Apache::inputtags::response[-1];
1309: foreach my $i (1..$Apache::lonhomework::history{'version'}) {
1310: my $sub_key = "$i:resource.$part.$id.submission";
1311: next if (!exists($Apache::lonhomework::history{$sub_key}));
1312: my @other_data;
1313: foreach my $datum (@{ $data }) {
1314: if (ref($datum)) {
1315: push(@other_data,$datum);
1316: } else {
1317: my $info_key = "$i:resource.$part.$id.$datum";
1318: push(@other_data,$Apache::lonhomework::history{$info_key});
1319: }
1320: }
1321:
1322: my $output =
1323: &$func('grade',
1324: $Apache::lonhomework::history{$sub_key},
1325: \@other_data);
1326: if (defined($output)) {
1327: $Apache::inputtags::submission_display{$sub_key} = $output;
1328: }
1329: }
1330: }
1331:
1332: 1;
1333: __END__
1334:
1335: =pod
1336:
1337: =back
1338:
1339: =cut
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