1: # The LearningOnline Network with CAPA
2: # various response type definitons response definition
3: #
4: # $Id: response.pm,v 1.143 2006/07/14 18:40:41 albertel Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28:
29: package Apache::response;
30: use strict;
31: use Apache::lonlocal;
32: use Apache::lonnet;
33:
34: BEGIN {
35: &Apache::lonxml::register('Apache::response',('responseparam','parameter','dataresponse','customresponse','mathresponse'));
36: }
37:
38: sub start_response {
39: my ($parstack,$safeeval)=@_;
40: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
41: if ($#Apache::inputtags::import > -1) {
42: &Apache::lonxml::debug("Turning :$id: into");
43: $id = join('_',@Apache::inputtags::import).'_'.$id;
44: &Apache::lonxml::debug("New :$id:");
45: }
46: push (@Apache::inputtags::response,$id);
47: push (@Apache::inputtags::responselist,$id);
48: @Apache::inputtags::inputlist=();
49: if ($Apache::inputtags::part eq '' &&
50: !$Apache::lonhomework::ignore_response_errors) {
51: &Apache::lonxml::error(&HTML::Entities::encode(&mt("Found a <*response> outside of a <part> in a <part>ed problem"),'<>&"'));
52: }
53: if ($Apache::inputtags::response_with_no_part &&
54: $Apache::inputtags::part ne '0') {
55: &Apache::lonxml::error(&HTML::Entities::encode(&mt("<*response>s are both inside of <part> and outside of <part>, this is not a valid problem, errors in grading may occur."),'<>&"').'<br />');
56: }
57: if ($Apache::inputtags::part eq '0') {
58: $Apache::inputtags::response_with_no_part=1;
59: }
60: return $id;
61: }
62:
63: sub end_response {
64: #pop @Apache::inputtags::response;
65: @Apache::inputtags::inputlist=();
66: return '';
67: }
68:
69: sub start_hintresponse {
70: my ($parstack,$safeeval)=@_;
71: my $id = &Apache::lonxml::get_id($parstack,$safeeval);
72: push (@Apache::inputtags::hint,$id);
73: push (@Apache::inputtags::hintlist,$id);
74: push (@Apache::inputtags::paramstack,[%Apache::inputtags::params]);
75: return $id;
76: }
77:
78: sub end_hintresponse {
79: pop @Apache::inputtags::hint;
80: if (defined($Apache::inputtags::paramstack[-1])) {
81: %Apache::inputtags::params=
82: @{ pop(@Apache::inputtags::paramstack) };
83: }
84: return '';
85: }
86:
87: my @randomseeds;
88: sub pushrandomnumber {
89: my $rand_alg=&Apache::lonnet::get_rand_alg();
90: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
91: $rand_alg eq '64bit2') {
92: # do nothing
93: } else {
94: my @seed=&Math::Random::random_get_seed();
95: push(@randomseeds,\@seed);
96: }
97: &Apache::response::setrandomnumber(@_);
98: }
99: sub poprandomnumber {
100: my $rand_alg=&Apache::lonnet::get_rand_alg();
101: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
102: $rand_alg eq '64bit2') {
103: return;
104: }
105: my $seed=pop(@randomseeds);
106: if ($seed) {
107: &Math::Random::random_set_seed(@$seed);
108: } else {
109: &Apache::lonxml::error("Unable to restore random algorithm.");
110: }
111: }
112:
113: sub setrandomnumber {
114: my ($ignore_id2) = @_;
115: my $rndseed;
116: $rndseed=&Apache::structuretags::setup_rndseed();
117: if (!defined($rndseed)) { $rndseed=&Apache::lonnet::rndseed(); }
118: &Apache::lonxml::debug("randseed $rndseed");
119: # $rndseed=unpack("%32i",$rndseed);
120: my $rand_alg=&Apache::lonnet::get_rand_alg();
121: my ($rndmod,$rndmod2);
122:
123: my ($id1,$id2,$shift_amt);
124: if ($Apache::lonhomework::parsing_a_problem) {
125: $id1=$Apache::inputtags::part;
126: if (defined($Apache::inputtags::response[-1])) {
127: $id2=$Apache::inputtags::response[-1];
128: }
129: $shift_amt=scalar(@Apache::inputtags::responselist);
130: } elsif ($Apache::lonhomework::parsing_a_task) {
131: $id1=&Apache::bridgetask::get_dim_id();
132: if (!$ignore_id2 && ref($Apache::bridgetask::instance{$id1})) {
133: $id2=$Apache::bridgetask::instance{$id1}[-1];
134: $shift_amt=scalar(@{$Apache::bridgetask::instance{$id1}});
135: } else {
136: $shift_amt=0;
137: }
138: }
139: &Apache::lonxml::debug("id1: $id1, id2: $id2, shift_amt: $shift_amt");
140: if (!$rand_alg || $rand_alg eq '32bit' || $rand_alg eq '64bit' ||
141: $rand_alg eq '64bit2') {
142: $rndmod=(&Apache::lonnet::numval($id1) << 10);
143: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval($id2); }
144: } elsif ($rand_alg eq '64bit3') {
145: $rndmod=(&Apache::lonnet::numval2($id1) << 10);
146: if (defined($id2)) { $rndmod+=&Apache::lonnet::numval2($id2); }
147: } elsif ($rand_alg eq '64bit4') {
148: my $shift=(4*$shift_amt)%30;
149: $rndmod=(&Apache::lonnet::numval3($id1) << (($shift+15)%30));
150: if (defined($id2)) {
151: $rndmod+=(&Apache::lonnet::numval3($id2) << $shift );
152: }
153: } else {
154: ($rndmod,$rndmod2)=&Apache::lonnet::digest("$id1,$id2");
155: }
156:
157: if ($rndseed =~/([,:])/) {
158: my $char=$1;
159: use integer;
160: my ($num1,$num2)=split(/\Q$char\E/,$rndseed);
161: $num1+=$rndmod;
162: $num2+= ((defined($rndmod2)) ? $rndmod2 : $rndmod);
163: if($Apache::lonnet::_64bit) { $num1=(($num1<<32)>>32); $num2=(($num2<<32)>>32); }
164: $rndseed=$num1.$char.$num2;
165: } else {
166: $rndseed+=$rndmod;
167: if($Apache::lonnet::_64bit) {
168: use integer;
169: $rndseed=(($rndseed<<32)>>32);
170: }
171: }
172: &Apache::lonxml::debug("randseed $rndmod $rndseed");
173: &Apache::lonnet::setup_random_from_rndseed($rndseed);
174: return '';
175: }
176:
177: sub meta_parameter_write {
178: my ($name,$type,$default,$display)=@_;
179: my $partref=$Apache::inputtags::part;
180: my $result='<parameter part="'.$Apache::inputtags::part.'"';
181: if (defined($Apache::inputtags::response[-1])) {
182: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
183: $partref.='_'.$Apache::inputtags::response[-1];
184: }
185: $result.= ' name="'.$name.'"'.
186: ' type="'.$type.'"'.
187: (defined($default)?' default="'.$default.'"':'').
188: (defined($display)?' display="'.$display.' [Part: '.$partref.']"':'')
189: .'></parameter>'
190: ."\n";
191: return $result;
192: }
193:
194: sub meta_package_write {
195: my $name=shift;
196: my $result = '<parameter part="'.$Apache::inputtags::part.'"';
197: if(defined($Apache::inputtags::response[-1])) {
198: $result.= ' id="'.$Apache::inputtags::response[-1].'"';
199: }
200: $result.=' package="'.$name.'"></parameter>'."\n";
201: return $result;
202: }
203:
204: sub meta_stores_write {
205: my ($name,$type,$display)=@_;
206: my $partref=$Apache::inputtags::part;
207: my $result = '<stores part="'.$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="'.$type.'"'.
214: ' display="'.$display.' [Part: '.$partref.']"'.
215: "></stores>\n";
216: }
217:
218: sub mandatory_part_meta {
219: #
220: # Autogenerate metadata for mandatory
221: # input (from RAT or lonparmset) and
222: # output (to lonspreadsheet)
223: # of each part
224: #
225: return
226: # &meta_parameter_write('opendate','date_start','',
227: # 'Opening Date').
228: # &meta_parameter_write('duedate','date_end','',
229: # 'Due Date').
230: # &meta_parameter_write('answerdate','date_start','',
231: # 'Show Answer Date').
232: # &meta_parameter_write('weight','int_zeropos','',
233: # 'Available Points').
234: # &meta_parameter_write('maxtries','int_pos','',
235: # 'Maximum Number of Tries').
236: &meta_package_write('part').
237: &meta_stores_write('solved','string',
238: 'Problem Status').
239: &meta_stores_write('tries','int_zeropos',
240: 'Number of Attempts').
241: &meta_stores_write('awarded','float',
242: 'Partial Credit Factor');
243: #
244: # Note: responseid-specific data 'submission' and 'awarddetail'
245: # not available to spreadsheet -> skip here
246: #
247: }
248:
249: sub meta_part_order {
250: if (@Apache::inputtags::partlist) {
251: my @parts=@Apache::inputtags::partlist;
252: shift(@parts);
253: return '<partorder>'.join(',',@parts).'</partorder>'."\n";
254: } else {
255: return '<partorder>0</partorder>'."\n";
256: }
257: }
258:
259: sub meta_response_order {
260: if (@Apache::inputtags::responselist) {
261: return '<responseorder>'.join(',',@Apache::inputtags::responselist).
262: '</responseorder>'."\n";
263: }
264: }
265:
266: sub check_for_previous {
267: my ($curresponse,$partid,$id) = @_;
268: my %previous;
269: $previous{'used'} = 0;
270: foreach my $key (sort(keys(%Apache::lonhomework::history))) {
271: if ($key =~ /resource\.$partid\.$id\.submission$/) {
272: &Apache::lonxml::debug("Trying $key");
273: my $pastresponse=$Apache::lonhomework::history{$key};
274: if ($pastresponse eq $curresponse) {
275: $previous{'used'} = 1;
276: my $history;
277: if ( $key =~ /^(\d+):/ ) {
278: $history=$1;
279: $previous{'award'} = $Apache::lonhomework::history{"$history:resource.$partid.$id.awarddetail"};
280: $previous{'last'}='0';
281: push(@{ $previous{'version'} },$history);
282: } else {
283: $previous{'award'} = $Apache::lonhomework::history{"resource.$partid.$id.awarddetail"};
284: $previous{'last'}='1';
285: }
286: if (! $previous{'award'} ) { $previous{'award'} = 'UNKNOWN'; }
287: &Apache::lonxml::debug("got a match :$previous{'award'}:$previous{'used'}:");
288: }
289: }
290: }
291: &Apache::lonhomework::showhash(%previous);
292: return %previous;
293: }
294:
295: sub handle_previous {
296: my ($previous,$ad)=@_;
297: if ($$previous{'used'} && ($$previous{'award'} eq $ad) ) {
298: if ($$previous{'last'}) {
299: push(@Apache::inputtags::previous,'PREVIOUSLY_LAST');
300: push(@Apache::inputtags::previous_version,$$previous{'version'});
301: } elsif ($Apache::lonhomework::type ne 'survey') {
302: push(@Apache::inputtags::previous,'PREVIOUSLY_USED');
303: push(@Apache::inputtags::previous_version,$$previous{'version'});
304: }
305: }
306: }
307:
308: sub view_or_modify {
309: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
310: my $myself=0;
311: if ( ($name eq $env{'user.name'}) && ($domain eq $env{'user.domain'}) ) {
312: $myself=1;
313: }
314: my $vgr=&Apache::lonnet::allowed('vgr',$courseid);
315: my $mgr=&Apache::lonnet::allowed('vgr',$courseid);
316: if ($mgr) { return "M"; }
317: if ($vgr) { return "V"; }
318: if ($myself) { return "V"; }
319: return '';
320: }
321:
322: sub start_dataresponse {
323: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
324: my $id = &Apache::response::start_response($parstack,$safeeval);
325: my $result;
326: if ($target eq 'web') {
327: $result = $token->[2]->{'display'}.':';
328: } elsif ($target eq 'meta') {
329: $result = &Apache::response::meta_stores_write($token->[2]->{'name'},
330: $token->[2]->{'type'},
331: $token->[2]->{'display'});
332: $result .= &Apache::response::meta_package_write('dataresponse');
333: }
334: return $result;
335: }
336:
337: sub end_dataresponse {
338: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
339: my $result;
340: if ( $target eq 'web' ) {
341: } elsif ($target eq 'grade' ) {
342: if ( defined $env{'form.submitted'}) {
343: my ($symb,$courseid,$domain,$name)=&Apache::lonxml::whichuser();
344: my $allowed=&Apache::lonnet::allowed('mgr',$courseid);
345: if ($allowed) {
346: &Apache::response::setup_params('dataresponse',$safeeval);
347: my $partid = $Apache::inputtags::part;
348: my $id = $Apache::inputtags::response['-1'];
349: my $response = $env{'form.HWVAL_'.$id};
350: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
351: if ( $response =~ /[^\s]/) {
352: $Apache::lonhomework::results{"resource.$partid.$id.$name"}=$response;
353: $Apache::lonhomework::results{"resource.$partid.$id.submission"}=$response;
354: $Apache::lonhomework::results{"resource.$partid.$id.awarddetail"}='SUBMITTED';
355: }
356: } else {
357: $result='Not Permitted to change values.'
358: }
359: }
360: }
361: &Apache::response::end_response;
362: return $result;
363: }
364:
365: sub start_customresponse {
366: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
367: my $id = &Apache::response::start_response($parstack,$safeeval);
368: push(@Apache::lonxml::namespace,'customresponse');
369: my $result;
370: undef($Apache::response::custom_answer);
371: &Apache::lonxml::register('Apache::response',('answer'));
372: if ($target eq 'web') {
373: if ( &Apache::response::show_answer() ) {
374: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
375: $safeeval);
376: $Apache::inputtags::answertxt{$id}=$answer;
377: }
378: } elsif ($target eq 'edit') {
379: $result.=&Apache::edit::tag_start($target,$token);
380: $result.=&Apache::edit::text_arg('String to display for answer:',
381: 'answerdisplay',$token);
382: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
383: } elsif ($target eq 'modified') {
384: my $constructtag;
385: $constructtag=&Apache::edit::get_new_args($token,$parstack,
386: $safeeval,'answerdisplay');
387: if ($constructtag) {
388: $result = &Apache::edit::rebuild_tag($token);
389: $result.=&Apache::edit::handle_insert();
390: }
391: } elsif ($target eq 'answer' || $target eq 'grade') {
392: &Apache::response::reset_params();
393: } elsif ($target eq 'meta') {
394: $result .= &Apache::response::meta_package_write('customresponse');
395: }
396: return $result;
397: }
398:
399: sub end_customresponse {
400: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
401: my $result;
402: my $part=$Apache::inputtags::part;
403: my $id=$Apache::inputtags::response[-1];
404: if ( $target eq 'grade' && &Apache::response::submitted() ) {
405: my $response = &Apache::response::getresponse();
406: if ( $response =~ /[^\s]/ &&
407: $Apache::response::custom_answer_type eq 'loncapa/perl') {
408: if (!$Apache::lonxml::default_homework_loaded) {
409: &Apache::lonxml::default_homework_load($safeeval);
410: }
411: my %previous = &Apache::response::check_for_previous($response,
412: $part,$id);
413: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
414: $response;
415: my $error;
416: ${$safeeval->varglob('LONCAPA::customresponse_submission')}=
417: $response;
418:
419: my $award = &Apache::run::run('{ my $submission=$LONCAPA::customresponse_submission;'.$Apache::response::custom_answer.'}',$safeeval);
420: if (!&Apache::inputtags::valid_award($award)) {
421: $error = $award;
422: $award = 'ERROR';
423: }
424: &Apache::response::handle_previous(\%previous,$award);
425: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
426: $award;
427: if ($error) {
428: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
429: $error;
430: }
431: }
432: }
433: pop(@Apache::lonxml::namespace);
434: &Apache::lonxml::deregister('Apache::response',('answer'));
435: &Apache::response::end_response();
436: return $result;
437: }
438:
439:
440: sub start_mathresponse {
441: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
442: my $id = &Apache::response::start_response($parstack,$safeeval);
443: push(@Apache::lonxml::namespace,'mathresponse');
444: my $result;
445: undef($Apache::response::custom_answer);
446: &Apache::lonxml::register('Apache::response',('answer'));
447: if ($target eq 'web') {
448: if ( &Apache::response::show_answer() ) {
449: my $answer = &Apache::lonxml::get_param('answerdisplay',$parstack,
450: $safeeval);
451: $Apache::inputtags::answertxt{$id}=$answer;
452: }
453: } elsif ($target eq 'edit') {
454: $result.=&Apache::edit::tag_start($target,$token);
455: $result.=&Apache::edit::text_arg('String to display for answer:',
456: 'answerdisplay',$token);
457: $result.=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
458: } elsif ($target eq 'modified') {
459: my $constructtag;
460: $constructtag=&Apache::edit::get_new_args($token,$parstack,
461: $safeeval,'answerdisplay');
462: if ($constructtag) {
463: $result = &Apache::edit::rebuild_tag($token);
464: $result.=&Apache::edit::handle_insert();
465: }
466: } elsif ($target eq 'answer' || $target eq 'grade') {
467: &Apache::response::reset_params();
468: } elsif ($target eq 'meta') {
469: $result .= &Apache::response::meta_package_write('mathresponse');
470: }
471: return $result;
472: }
473:
474: sub end_mathresponse {
475: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
476: my $result;
477: my $part=$Apache::inputtags::part;
478: my $id=$Apache::inputtags::response[-1];
479: if ( $target eq 'grade' && &Apache::response::submitted() ) {
480: my $response = &Apache::response::getresponse();
481: if ( $response =~ /[^\s]/ &&
482: $Apache::response::custom_answer_type eq 'loncapa/perl') {
483: if (!$Apache::lonxml::default_homework_loaded) {
484: &Apache::lonxml::default_homework_load($safeeval);
485: }
486: my %previous = &Apache::response::check_for_previous($response,
487: $part,$id);
488: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
489: $response;
490: my $error;
491: ${$safeeval->varglob('LONCAPA::mathresponse_submission')}=
492: $response;
493:
494: my $award = &Apache::run::run('{ my $submission=$LONCAPA::mathresponse_submission;'.$Apache::response::custom_answer.'}',$safeeval);
495: if (!&Apache::inputtags::valid_award($award)) {
496: $error = $award;
497: $award = 'ERROR';
498: }
499: &Apache::response::handle_previous(\%previous,$award);
500: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
501: $award;
502: if ($error) {
503: $Apache::lonhomework::results{"resource.$part.$id.awardmsg"}=
504: $error;
505: }
506: }
507: }
508: pop(@Apache::lonxml::namespace);
509: &Apache::lonxml::deregister('Apache::response',('answer'));
510: &Apache::response::end_response();
511: return $result;
512: }
513:
514:
515: sub start_answer {
516: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
517: my $result;
518: $Apache::response::custom_answer=
519: &Apache::lonxml::get_all_text_unbalanced("/answer",$parser);
520: $Apache::response::custom_answer_type=
521: lc(&Apache::lonxml::get_param('type',$parstack,$safeeval));
522: $Apache::response::custom_answer_type =~ s/\s+//g;
523: if ($target eq "edit" ) {
524: $result=&Apache::edit::tag_start($target,$token,'Answer algorithm');
525: $result.=&Apache::edit::editfield($token->[1],
526: $Apache::response::custom_answer,
527: '',80,4);
528: } elsif ( $target eq "modified" ) {
529: $result=$token->[4].&Apache::edit::modifiedfield('/answer',$parser);
530: }
531: return $result;
532: }
533:
534: sub end_answer {
535: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
536: if ($target eq 'edit' ) {
537: return &Apache::edit::end_table();
538: }
539: }
540:
541: sub decide_package {
542: my ($tagstack)=@_;
543: my $package;
544: if ($$tagstack[-1] eq 'parameter') {
545: $package='part';
546: } else {
547: my $i=-1;
548: while (defined($$tagstack[$i])) {
549: if ($$tagstack[$i] =~ /(response|hint)$/) {
550: $package=$$tagstack[$i];
551: last;
552: }
553: $i--;
554: }
555: }
556: return $package;
557: }
558:
559: sub start_responseparam {
560: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
561: my $result='';
562: if ($target eq 'meta') {
563: $result = &meta_parameter_write($token->[2]->{'name'},
564: $token->[2]->{'type'},
565: $token->[2]->{'default'},
566: $token->[2]->{'description'});
567: } elsif ($target eq 'edit') {
568: $result.=&Apache::edit::tag_start($target,$token);
569: my $optionlist;
570: my $package=&decide_package($tagstack);
571: foreach my $key (sort(keys(%Apache::lonnet::packagetab))) {
572: if ($key =~ /^\Q$package\E&(.*)&display$/) {
573: $optionlist.='<option value="'.$1.'">'.
574: $Apache::lonnet::packagetab{$key}.'</option>';
575: }
576: }
577: if (defined($optionlist)) {
578: $result.='Use template: <select name="'.
579: &Apache::edit::html_element_name('parameter_package').'">'.
580: '<option value=""></option>'.$optionlist.'</select><br />';
581: }
582: $result.=&Apache::edit::text_arg('Name:','name',$token).
583: &Apache::edit::text_arg('Type:','type',$token).
584: &Apache::edit::text_arg('Description:','description',$token).
585: &Apache::edit::text_arg('Default:','default',$token).
586: "</td></tr>";
587: $result.=&Apache::edit::end_table;
588: } elsif ($target eq 'modified') {
589: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
590: $safeeval,'name','type',
591: 'description','default');
592: my $element=&Apache::edit::html_element_name('parameter_package');
593: if (defined($env{"form.$element"}) && $env{"form.$element"} ne '') {
594: my $name=$env{"form.$element"};
595: my $tag=&decide_package($tagstack);
596: $token->[2]->{'name'}=$name;
597: $token->[2]->{'type'}=
598: $Apache::lonnet::packagetab{"$tag&$name&type"};
599: $token->[2]->{'description'}=
600: $Apache::lonnet::packagetab{"$tag&$name&display"};
601: $token->[2]->{'default'}=
602: $Apache::lonnet::packagetab{"$tag&$name&default"};
603: $constructtag=1;
604: }
605: if ($constructtag) {
606: $result = &Apache::edit::rebuild_tag($token);
607: $result.=&Apache::edit::handle_insert();
608: }
609: } elsif ($target eq 'grade' || $target eq 'answer' || $target eq 'web' ||
610: $target eq 'tex' || $target eq 'analyze' ) {
611: if ($env{'request.state'} eq 'construct') {
612: my $name =&Apache::lonxml::get_param('name',$parstack,$safeeval);
613: my $default=&Apache::lonxml::get_param('default',$parstack,
614: $safeeval);
615: if ($name) {$Apache::inputtags::params{$name}=$default;}
616: }
617: }
618: return $result;
619: }
620:
621: sub end_responseparam {
622: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
623: if ($target eq 'edit') { return ('','no'); }
624: return '';
625: }
626:
627: sub start_parameter {
628: return &start_responseparam(@_);
629: }
630:
631: sub end_parameter {
632: return &end_responseparam(@_);
633: }
634:
635: sub reset_params {
636: %Apache::inputtags::params=();
637: }
638:
639: sub setup_params {
640: my ($tag,$safeeval) = @_;
641:
642: if ($env{'request.state'} eq 'construct') { return; }
643: my %paramlist=();
644: foreach my $key (keys(%Apache::lonnet::packagetab)) {
645: if ($key =~ /^$tag/) {
646: my ($package,$name) = split(/&/,$key);
647: $paramlist{$name}=1;
648: }
649: }
650: foreach my $key (keys(%paramlist)) {
651: my $entry= 'resource.'.$Apache::inputtags::part;
652: if (defined($Apache::inputtags::response[-1])) {
653: $entry.='_'.$Apache::inputtags::response[-1];
654: }
655: $entry.='.'.$key;
656: &Apache::lonxml::debug("looking for $entry");
657: my $value = &Apache::lonnet::EXT("$entry");
658: &Apache::lonxml::debug("$key has value :$value:");
659: if ($value eq 'con_lost' || $value =~ /^error:/) {
660: &Apache::lonxml::debug("using nothing");
661: $Apache::inputtags::params{$key}='';
662: } else {
663: my $string="{return qq\0".$value."\0}";
664: my $newvalue=&Apache::run::run($string,$safeeval,1);
665: if (defined($newvalue)) { $value=$newvalue; }
666: $Apache::inputtags::params{$key}=$value;
667: }
668: }
669: }
670:
671: {
672: my @answer_bits;
673:
674: sub answer_header {
675: my ($type,$increment) = @_;
676: my $result;
677: if ($env{'form.answer_output_mode'} eq 'tex') {
678: undef(@answer_bits);
679: my $bit;
680: if ($Apache::lonhomework::type eq 'exam') {
681: $bit = ($Apache::lonxml::counter+$increment).') ';
682: } else {
683: $bit .= ' Answer for Part: \verb|'.
684: $Apache::inputtags::part.'| ';
685: }
686: push(@answer_bits,$bit);
687: } else {
688: $result = '<table border="1"><tr>';
689: if ($Apache::lonhomework::type eq 'exam') {
690: $result .= '<td>'.($Apache::lonxml::counter+$increment). ')</td>';
691: } else {
692: $result .= '<td>Answer for Part:'.$Apache::inputtags::part.'</td>';
693: }
694: $result .= "\n";
695: }
696: return $result;
697: }
698:
699: sub answer_part {
700: my ($type,$answer) = @_;
701: my $result;
702: if ($env{'form.answer_output_mode'} eq 'tex') {
703: my $to_use='|';
704: foreach my $value (32..126) {
705: my $char=pack('c',$value);
706: if ($answer !~ /\Q$char\E/) {
707: $to_use=$char;
708: last;
709: }
710: }
711: if ($answer ne '') {
712: push(@answer_bits,'\verb'.$to_use.$answer.$to_use);
713: }
714: } else {
715: $result = '<td>'.$answer.'</td>';
716: }
717: return $result;
718: }
719:
720: sub answer_footer {
721: my ($type) = @_;
722: my $result;
723: if ($env{'form.answer_output_mode'} eq 'tex') {
724: my $columns = scalar(@answer_bits);
725: $result = ' \vskip 0 mm \noindent \begin{tabular}{|'.'c|'x$columns.'}\hline ';
726: $result .= join(' & ',@answer_bits);
727: $result .= ' \\\\ \\hline \end{tabular} \vskip 0 mm ';
728: } else {
729: $result = '</tr></table>';
730: }
731: return $result;
732: }
733:
734: }
735:
736: sub showallfoils {
737: if (defined($env{'form.showallfoils'})) {
738: my ($symb)=&Apache::lonxml::whichuser();
739: if (($env{'request.state'} eq 'construct') ||
740: ($env{'user.adv'} && $symb eq '') ||
741: ($Apache::lonhomework::viewgrades) ) {
742: return 1;
743: }
744: }
745: if ($Apache::lonhomework::type eq 'survey') { return 1; }
746: return 0;
747: }
748:
749: sub getresponse {
750: my ($temp,$resulttype)=@_;
751: my $formparm='form.HWVAL_'.$Apache::inputtags::response['-1'];
752: my $response;
753: if (!defined($temp)) {
754: $temp=1;
755: } else {
756: $formparm.=":$temp";
757: }
758: my %let_to_num=('A'=>0,'B'=>1,'C'=>2,'D'=>3,'E'=>4,'F'=>5,'G'=>6,'H'=>7,
759: 'I'=>8,'J'=>9,'K'=>10,'L'=>11,'M'=>12,'N'=>13,'O'=>14,
760: 'P'=>15,'Q'=>16,'R'=>17,'S'=>18,'T'=>19,'U'=>20,'V'=>21,
761: 'W'=>22,'X'=>23,'Y'=>24,'Z'=>25);
762: if ($env{'form.submitted'} eq 'scantron') {
763: my $part = $Apache::inputtags::part;
764: my $id = $Apache::inputtags::response[-1];
765: $response = $env{'scantron.'.($Apache::lonxml::counter+$temp-1).
766: '.answer'};
767: # save bubbled letter for later
768: $Apache::lonhomework::results{"resource.$part.$id.scantron"}.=
769: $response;
770: if ($resulttype ne 'letter') {
771: if ($resulttype eq 'A is 1') {
772: $response = $let_to_num{$response}+1;
773: } else {
774: $response = $let_to_num{$response};
775: }
776: }
777: } else {
778: $response = $env{$formparm};
779: }
780: return $response;
781: }
782:
783: sub repetition {
784: my $id = $Apache::inputtags::part;
785: my $weight = &Apache::lonnet::EXT("resource.$id.weight");
786: if (!defined($weight) || ($weight eq '')) { $weight=1; }
787: my $repetition = int($weight/10);
788: if ($weight % 10 != 0) { $repetition++; }
789: return $repetition;
790: }
791:
792: sub scored_response {
793: my ($part,$id)=@_;
794: my $repetition=&repetition();
795: my $score=0;
796: for (my $i=0;$i<$repetition;$i++) {
797: # A is 1, B is 2, etc. (get response return 0-9 and then we add 1)
798: my $increase=&Apache::response::getresponse($i+1);
799: if ($increase ne '') { $score+=$increase+1; }
800: }
801: my $weight = &Apache::lonnet::EXT("resource.$part.weight");
802: if (!defined($weight) || $weight eq '' || $weight eq 0) { $weight = 1; }
803: my $pcr=$score/$weight;
804: $Apache::lonhomework::results{"resource.$part.$id.awarded"}=$pcr;
805: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
806: 'ASSIGNED_SCORE';
807: return $repetition;
808: }
809:
810: sub whichorder {
811: my ($max,$randomize,$showall,$hash)=@_;
812: #&Apache::lonxml::debug("man $max randomize $randomize");
813: if (!defined(@{ $$hash{'names'} })) { return; }
814: my @names = @{ $$hash{'names'} };
815: my @whichopt =();
816: my (%top,@toplist,%bottom,@bottomlist);
817: if (!($showall || ($randomize eq 'no'))) {
818: my $current=0;
819: foreach my $name (@names) {
820: $current++;
821: if ($$hash{"$name.location"} eq 'top') {
822: $top{$name}=$current;
823: } elsif ($$hash{"$name.location"} eq 'bottom') {
824: $bottom{$name}=$current;
825: }
826: }
827: }
828: my $topcount=0;
829: my $bottomcount=0;
830: while (((scalar(@whichopt)+$topcount+$bottomcount) < $max || $showall)
831: && ($#names > -1)) {
832: #&Apache::lonxml::debug("Have $#whichopt max is $max");
833: my $aopt;
834: if ($showall || ($randomize eq 'no')) {
835: $aopt=0;
836: } else {
837: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
838: }
839: #&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
840: $aopt=splice(@names,$aopt,1);
841: #&Apache::lonxml::debug("Picked $aopt");
842: if ($top{$aopt}) {
843: $toplist[$top{$aopt}]=$aopt;
844: $topcount++;
845: } elsif ($bottom{$aopt}) {
846: $bottomlist[$bottom{$aopt}]=$aopt;
847: $bottomcount++;
848: } else {
849: push (@whichopt,$aopt);
850: }
851: }
852: for (my $i=0;$i<=$#toplist;$i++) {
853: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
854: }
855: for (my $i=0;$i<=$#bottomlist;$i++) {
856: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
857: }
858: return @whichopt;
859: }
860:
861: sub show_answer {
862: my $part = $Apache::inputtags::part;
863: my $award = $Apache::lonhomework::history{"resource.$part.solved"};
864: my $status = $Apache::inputtags::status[-1];
865: return ( ($award =~ /^correct/
866: && lc($Apache::lonhomework::problemstatus) ne 'no')
867: || $status eq "SHOW_ANSWER");
868: }
869:
870: sub analyze_store_foilgroup {
871: my ($shown,$attrs)=@_;
872: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
873: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
874: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
875: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
876: foreach my $attr (@$attrs) {
877: $Apache::lonhomework::analyze{"$part_id.foil.".$attr.".$name"} =
878: $Apache::response::foilgroup{"$name.".$attr};
879: }
880: }
881: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} }, @{ $shown });
882: }
883:
884: sub check_if_computed {
885: my ($token,$parstack,$safeeval,$name)=@_;
886: my $value = &Apache::lonxml::get_param($name,$parstack,$safeeval);
887: if (ref($token->[2]) eq 'HASH' && $value ne $token->[2]{$name}) {
888: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
889: $Apache::lonhomework::analyze{"$part_id.answercomputed"} = 1;
890: }
891: }
892:
893: sub pick_foil_for_concept {
894: my ($target,$attrs,$hinthash,$parstack,$safeeval)=@_;
895: if (not defined(@{ $Apache::response::conceptgroup{'names'} })) { return; }
896: my @names = @{ $Apache::response::conceptgroup{'names'} };
897: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
898: my $name=$names[$pick];
899: push @{ $Apache::response::foilgroup{'names'} }, $name;
900: foreach my $attr (@$attrs) {
901: $Apache::response::foilgroup{"$name.".$attr} =
902: $Apache::response::conceptgroup{"$name.".$attr};
903: }
904: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
905: $Apache::response::foilgroup{"$name.concept"} = $concept;
906: &Apache::lonxml::debug("Selecting $name in $concept");
907: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
908: if ($target eq 'analyze') {
909: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
910: $concept);
911: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
912: $Apache::response::conceptgroup{'names'};
913: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
914: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
915: $name);
916: foreach my $attr (@$attrs) {
917: $Apache::lonhomework::analyze{"$part_id.foil.$attr.$name"}=
918: $Apache::response::conceptgroup{"$name.$attr"};
919: }
920: }
921: }
922: push(@{ $hinthash->{"$part_id.concepts"} },$concept);
923: $hinthash->{"$part_id.concept.$concept"}=
924: $Apache::response::conceptgroup{'names'};
925:
926: }
927:
928: sub get_response_param {
929: my ($id,$name,$default)=@_;
930: my $parameter;
931: if ($env{'request.state'} eq 'construct' &&
932: defined($Apache::inputtags::params{$name})) {
933: $parameter=$Apache::inputtags::params{$name};
934: } else {
935: $parameter=&Apache::lonnet::EXT("resource.$id.$name");
936: }
937: if (!defined($parameter) || $parameter eq '') {
938: $parameter = $default;
939: }
940: return $parameter;
941: }
942:
943: sub submitted {
944: my ($who)=@_;
945:
946: # when scatron grading any submission is a submission
947: if ($env{'form.submitted'} eq 'scantron') { return 1; }
948: # if the caller only cared if this was a scantron submission
949: if ($who eq 'scantron') { return 0; }
950: # if the Submit Answer button for this particular part was pressed
951: my $partid=$Apache::inputtags::part;
952: if (defined($env{'form.submit_'.$partid})) { return 1; }
953: # Submit All button on a .page was pressed
954: if (defined($env{'form.all_submit'})) { return 1; }
955: # otherwise no submission occured
956: return 0;
957: }
958:
959: sub add_to_gradingqueue {
960: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
961: if ( $courseid eq ''
962: || $symb eq ''
963: || $env{'request.state'} eq 'construct'
964: || $Apache::lonhomework::type ne 'problem') {
965: return;
966: }
967:
968: my %queue_info = ( 'type' => 'problem',
969: 'time' => time);
970:
971: if (exists($Apache::lonhomework::history{"resource.0.checkedin.slot"})) {
972: $queue_info{'slot'}=
973: $Apache::lonhomework::history{"resource.0.checkedin.slot"};
974: }
975:
976: my $result=&Apache::bridgetask::add_to_queue('gradingqueue',\%queue_info);
977: if ($result ne 'ok') {
978: &Apache::lonxml::error("add_to_queue said $result");
979: }
980: }
981:
982: # basically undef and 0 (both false) mean that they still have work to do
983: # and all true values mean that they can't do any more work
984: #
985: # a return of undef means it is unattempted
986: # a return of 0 means it is attmpted and wrong but still has tries
987: # a return of 1 means it is marked correct
988: # a return of 2 means they have exceed maximum number of tries
989: # a return of 3 means it after the answer date
990: sub check_status {
991: my ($id)=@_;
992: if (!defined($id)) { $id=$Apache::inputtags::part; }
993: my $curtime=&Apache::lonnet::EXT('system.time');
994: my $opendate=&Apache::lonnet::EXT("resource.$id.opendate");
995: my $duedate=&Apache::lonnet::EXT("resource.$id.duedate");
996: my $answerdate=&Apache::lonnet::EXT("resource.$id.answerdate");
997: if ( $opendate && $curtime > $opendate &&
998: $duedate && $curtime > $duedate &&
999: $answerdate && $curtime > $answerdate) {
1000: return 3;
1001: }
1002: my $status=&Apache::lonnet::EXT("user.resource.resource.$id.solved");
1003: if ($status =~ /^correct/) { return 1; }
1004: if (!$status) { return undef; }
1005: my $maxtries=&Apache::lonnet::EXT("resource.$id.maxtries");
1006: if ($maxtries eq '') { $maxtries=2; }
1007: my $curtries=&Apache::lonnet::EXT("user.resource.resource.$id.tries");
1008: if ($curtries < $maxtries) { return 0; }
1009: return 2;
1010: }
1011:
1012: 1;
1013: __END__
1014:
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