1: # The LearningOnline Network with CAPA
2: # input definitons
3: #
4: # $Id: inputtags.pm,v 1.114.2.3 2003/09/23 16:00:49 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: # 2/19 Guy
29:
30: package Apache::inputtags;
31: use HTML::Entities();
32: use strict;
33: use Apache::loncommon;
34:
35: BEGIN {
36: &Apache::lonxml::register('Apache::inputtags',('hiddenline','textfield','textline'));
37: }
38:
39:
40: sub initialize_inputtags {
41: # list of current input ids
42: @Apache::inputtags::input=();
43: # list of all input ids seen in this problem
44: @Apache::inputtags::inputlist=();
45: # list of all current response ids
46: @Apache::inputtags::response=();
47: # list of all response ids seen in this problem
48: @Apache::inputtags::responselist=();
49: # list of whether or not a specific response was previously used
50: @Apache::inputtags::previous=();
51: # submission it was used in
52: @Apache::inputtags::previous_version=();
53: # id of current part, 0 means that no part is current (inside <problem> only
54: $Apache::inputtags::part='';
55: # list of all part ids seen
56: @Apache::inputtags::partlist=();
57: # list of problem date statuses, the first element is for <problem>
58: # if there is a second element it is for the current <part>
59: @Apache::inputtags::status=();
60: # hash of defined params for the current response
61: %Apache::inputtags::params=();
62: # list of all ids, for <import>, these get join()ed and prepended
63: @Apache::inputtags::import=();
64: # list of all import ids seen
65: @Apache::inputtags::importlist=();
66: }
67:
68: sub check_for_duplicate_ids {
69: my %check;
70: foreach my $id (@Apache::inputtags::partlist,
71: @Apache::inputtags::responselist,
72: @Apache::inputtags::importlist) {
73: $check{$id}++;
74: }
75: my @duplicates;
76: foreach my $id (sort(keys(%check))) {
77: if ($check{$id} > 1) {
78: push(@duplicates,$id);
79: }
80: }
81: if (@duplicates) {
82: &Apache::lonxml::error("Duplicated ids found, problem will operate incorrectly. Duplicated ids seen: ",join(', ',@duplicates));
83: }
84: }
85:
86: sub start_input {
87: my ($parstack,$safeeval)=@_;
88: my $id = &Apache::lonxml::get_param('id',$parstack,$safeeval);
89: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
90: push (@Apache::inputtags::input,$id);
91: push (@Apache::inputtags::inputlist,$id);
92: return $id;
93: }
94:
95: sub end_input {
96: pop @Apache::inputtags::input;
97: return '';
98: }
99:
100: sub start_textfield {
101: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
102: my $result = "";
103: my $id = &start_input($parstack,$safeeval);
104: my $resid=$Apache::inputtags::response[-1];
105: if ($target eq 'web') {
106: $Apache::lonxml::evaluate--;
107: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
108: my $partid=$Apache::inputtags::part;
109: my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$resid.submission"});
110: my $cols = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
111: if ( $cols eq '') { $cols = 80; }
112: my $rows = &Apache::lonxml::get_param('rows',$parstack,$safeeval);
113: if ( $rows eq '') { $rows = 10; }
114: $result= '<textarea name="HWVAL_'.$resid.'" '.
115: "rows=\"$rows\" cols=\"$cols\">".$oldresponse;
116: if ($oldresponse ne '') {
117: #get rid of any startup text if the user has already responded
118: &Apache::lonxml::get_all_text("/textfield",$parser);
119: }
120: } else {
121: #right or wrong don't show it
122: #$result='<table border="1"><tr><td><i>'.$oldresponse.'</i></td></tr></table>';
123: $result='';
124: #get rid of any startup text
125: &Apache::lonxml::get_all_text("/textfield",$parser);
126: }
127: } elsif ($target eq 'grade') {
128: my $seedtext=&Apache::lonxml::get_all_text("/textfield",$parser);
129: if ($seedtext eq $ENV{'form.HWVAL_'.$resid}) {
130: # if the seed text is still there it wasn't a real submission
131: $ENV{'form.HWVAL_'.$resid}='';
132: }
133: } elsif ($target eq 'edit') {
134: $result.=&Apache::edit::tag_start($target,$token);
135: $result.=&Apache::edit::text_arg('Rows:','rows',$token,4);
136: $result.=&Apache::edit::text_arg('Columns:','cols',$token,4);
137: my $bodytext=&Apache::lonxml::get_all_text("/textfield",$parser);
138: $result.=&Apache::edit::editfield($token->[1],$bodytext,'Text you want to appear by default:',80,2);
139: } elsif ($target eq 'modified') {
140: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
141: $safeeval,'rows','cols');
142: if ($constructtag) {
143: $result = &Apache::edit::rebuild_tag($token);
144: } else {
145: $result=$token->[4];
146: }
147: my $bodytext=&Apache::lonxml::get_all_text("/textfield",$parser);
148: $result.=&Apache::edit::modifiedfield();
149: } elsif ($target eq 'tex') {
150: my $number_of_lines = &Apache::lonxml::get_param('rows',$parstack,$safeeval);
151: my $width_of_box = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
152: if ($$tagstack[-2] eq 'essayresponse' and $Apache::lonhomework::type eq 'exam') {
153: $result = '\fbox{\fbox{\parbox{\textwidth-5mm}{';
154: for (my $i=0;$i<int $number_of_lines*2;$i++) {$result.='\strut \\\\ ';}
155: $result.='\strut \\\\\strut \\\\\strut \\\\\strut \\\\}}}';
156: } else {
157: my $TeXwidth=$width_of_box/80;
158: $result = '\vskip 1 mm \fbox{\fbox{\parbox{'.$TeXwidth.'\textwidth-5mm}{';
159: for (my $i=0;$i<int $number_of_lines*2;$i++) {$result.='\strut \\\\ ';}
160: $result.='}}}\vskip 2 mm ';
161: }
162: }
163: return $result;
164: }
165:
166: sub end_textfield {
167: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
168: my $result;
169: if ($target eq 'web') {
170: $Apache::lonxml::evaluate++;
171: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
172: return "</textarea>";
173: }
174: } elsif ($target eq 'edit') {
175: $result=&Apache::edit::end_table();
176: }
177: &end_input;
178: return $result;
179: }
180:
181: sub start_textline {
182: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
183: my $result = "";
184: if ($target eq 'web') {
185: $Apache::lonxml::evaluate--;
186: my $partid=$Apache::inputtags::part;
187: my $id=$Apache::inputtags::response[-1];
188: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
189: my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
190: my $maxlength;
191: if ($size eq '') { $size=20; } else {
192: if ($size < 20) { $maxlength=$size; }
193: }
194: my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"});
195: if ($Apache::lonhomework::type ne 'exam') {
196: $result= '<input type="text" name="HWVAL_'.$id.'" value="'.
197: $oldresponse.'" size="'.$size.'" maxlength="'.$maxlength.'" />';
198: }
199: } else {
200: #right or wrong don't show what was last typed in.
201: #$result='<i>'.$oldresponse.'</i>';
202: $result='';
203: }
204: } elsif ($target eq 'edit') {
205: $result=&Apache::edit::tag_start($target,$token);
206: $result.=&Apache::edit::text_arg('Size:','size',$token,'5')."</td></tr>";
207: $result.=&Apache::edit::end_table;
208: } elsif ($target eq 'modified') {
209: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'size');
210: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
211: } elsif ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
212: my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
213: if ($size != 0) {$size=$size*2; $size.=' mm';} else {$size='40 mm';}
214: $result='\framebox['.$size.'][s]{\tiny\strut}';
215: }
216: return $result;
217: }
218:
219: sub end_textline {
220: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
221: if ($target eq 'web') { $Apache::lonxml::evaluate++; }
222: elsif ($target eq 'edit') { return ('','no'); }
223: return "";
224: }
225:
226: sub start_hiddenline {
227: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
228: my $result = "";
229: if ($target eq 'web') {
230: $Apache::lonxml::evaluate--;
231: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
232: my $partid=$Apache::inputtags::part;
233: my $id=$Apache::inputtags::response[-1];
234: my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"});
235: if ($Apache::lonhomework::type ne 'exam') {
236: $result= '<input type="hidden" name="HWVAL_'.$id.'" value="'.
237: $oldresponse.'" />';
238: }
239: }
240: } elsif ($target eq 'edit') {
241: $result=&Apache::edit::tag_start($target,$token);
242: $result.=&Apache::edit::end_table;
243: }
244: return $result;
245: }
246:
247: sub end_hiddenline {
248: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
249: if ($target eq 'web') { $Apache::lonxml::evaluate++; }
250: elsif ($target eq 'edit') { return ('','no'); }
251: return "";
252: }
253:
254: sub finalizeawards {
255: my $result='';
256: my $award;
257: if ($#_ == '-1') { $result = "NO_RESPONSE"; }
258: if ($result eq '' ) {
259: my $blankcount;
260: foreach $award (@_) {
261: if ($award eq '') {
262: $result='MISSING_ANSWER';
263: $blankcount++;
264: }
265: }
266: if ($blankcount == ($#_ + 1)) { $result = 'NO_RESPONSE'; }
267: }
268: if ($result eq '' ) {
269: foreach $award (@_) { if ($award eq 'MISSING_ANSWER') {$result='MISSING_ANSWER'; last;}}
270: }
271: if ($result eq '' ) {
272: foreach $award (@_) { if ($award eq 'ERROR') {$result='ERROR'; last;}}
273: }
274: if ($result eq '' ) {
275: foreach $award (@_) { if ($award eq 'NO_RESPONSE') {$result='NO_RESPONSE'; last;} }
276: }
277: if ($result eq '' ) {
278: foreach $award (@_) { if ($award eq 'TOO_LONG') {$result='TOO_LONG'; last;}}
279: }
280: if ($result eq '' ) {
281: foreach $award (@_) {
282: if ($award eq 'UNIT_FAIL' ||
283: $award eq 'NO_UNIT' ||
284: $award eq 'UNIT_NOTNEEDED') {
285: $result=$award; last;
286: }
287: }
288: }
289: if ($result eq '' ) {
290: foreach $award (@_) {
291: if ($award eq 'WANTED_NUMERIC' ||
292: $award eq 'BAD_FORMULA') {$result=$award; last;}
293: }
294: }
295: if ($result eq '' ) {
296: foreach $award (@_) { if ($award eq 'SIG_FAIL') {$result=$award; last;} }
297: }
298: if ($result eq '' ) {
299: foreach $award (@_) { if ($award eq 'INCORRECT') {$result=$award; last;} }
300: }
301: if ($result eq '' ) {
302: foreach $award (@_) { if ($award eq 'MISORDERED_RANK') {$result=$award; last;} }
303: }
304: if ($result eq '' ) {
305: foreach $award (@_) { if ($award eq 'INVALID_FILETYPE') {$result=$award; last;} }
306: }
307: if ($result eq '' ) {
308: foreach $award (@_) { if ($award eq 'DRAFT') {$result=$award; last;} }
309: }
310: if ($result eq '' ) {
311: foreach $award (@_) { if ($award eq 'SUBMITTED') {$result=$award; last;} }
312: }
313: if ($result eq '' ) {
314: foreach $award (@_) { if ($award eq 'ASSIGNED_SCORE') {$result=$award; last;} }
315: }
316: if ($result eq '' ) {
317: foreach $award (@_) { if ($award eq 'APPROX_ANS') {$result=$award; last;} }
318: }
319: if ($result eq '' ) { $result='EXACT_ANS'; }
320: return $result
321: }
322:
323: sub decideoutput {
324: my ($award,$solved,$previous,$target)=@_;
325: my $message='';
326: my $button=0;
327: my $previousmsg;
328: my $bgcolor='orange';
329: my %possiblecolors =
330: ( 'correct' => '#aaffaa',
331: 'charged_try' => '#ffaaaa',
332: 'not_charged_try' => '#ffffaa',
333: 'no_message' => '#fffff',
334: );
335: if ($previous) { $previousmsg='You have entered that answer before'; }
336:
337: if ($solved =~ /^correct/) {
338: if ($award eq 'ASSIGNED_SCORE') {
339: $message = "A score has been assigned.";
340: } else {
341: if ($target eq 'tex') {
342: $message = '\textbf{You are correct}.';
343: } else {
344: $message = "<b>You are correct.</b>";
345: }
346: unless ($ENV{'course.'.
347: $ENV{'request.course.id'}.
348: '.disable_receipt_display'} eq 'yes') {
349: $message.=(($target eq 'web')?'<br />':' ').
350: 'Your receipt is '.&Apache::lonnet::receipt().
351: (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
352: }
353: }
354: $bgcolor=$possiblecolors{'correct'};
355: $button=0;
356: $previousmsg='';
357: } elsif ($solved =~ /^excused/) {
358: if ($target eq 'tex') {
359: $message = ' \textbf{You are excused from the problem.} ';
360: } else {
361: $message = "<b>You are excused from the problem.</b>";
362: }
363: $bgcolor=$possiblecolors{'charged_try'};
364: $button=0;
365: $previousmsg='';
366: } elsif ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {
367: if ($solved =~ /^incorrect/ || $solved eq '') {
368: $message = "Incorrect";
369: $bgcolor=$possiblecolors{'charged_try'};
370: $button=1;
371: } else {
372: $message = "<b>You are correct.</b>";
373: unless ($ENV{'course.'.
374: $ENV{'request.course.id'}.
375: '.disable_receipt_display'} eq 'yes') {
376: $message.=(($target eq 'web')?'<br />':' ').
377: 'Your receipt is '.&Apache::lonnet::receipt().
378: (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
379: }
380: $bgcolor=$possiblecolors{'correct'};
381: $button=0;
382: $previousmsg='';
383: }
384: } elsif ($award eq 'NO_RESPONSE') {
385: $message = '';
386: $bgcolor=$possiblecolors{'no_feedback'};
387: $button=1;
388: } elsif ($award eq 'MISSING_ANSWER') {
389: $message = 'Some parts were not submitted';
390: $bgcolor=$possiblecolors{'not_charged_try'};
391: $button = 1;
392: } elsif ($award eq 'ERROR') {
393: $message = 'An error occured while grading your answer.';
394: $bgcolor=$possiblecolors{'not_charged_try'};
395: $button = 1;
396: } elsif ($award eq 'TOO_LONG') {
397: $message = "The submitted answer was too long.";
398: $bgcolor=$possiblecolors{'not_charged_try'};
399: $button=1;
400: } elsif ($award eq 'WANTED_NUMERIC') {
401: $message = "This question expects a numeric answer";
402: $bgcolor=$possiblecolors{'not_charged_try'};
403: $button=1;
404: } elsif ($award eq 'MISORDERED_RANK') {
405: $message = 'You have provided an invalid ranking';
406: if ($target ne 'tex') {
407: $message.=', please refer to '.&Apache::loncommon::help_open_topic('Ranking_Problems','help on ranking problems').'.';
408: }
409: $bgcolor=$possiblecolors{'not_charged_try'};
410: $button=1;
411: } elsif ($award eq 'INVALID_FILETYPE') {
412: $message = 'The filetype extension of the file you uploaded is not allowed.';
413: $bgcolor=$possiblecolors{'not_charged_try'};
414: $button=1;
415: } elsif ($award eq 'SIG_FAIL') {
416: $message = "Please adjust significant figures.";# you provided %s significant figures";
417: $bgcolor=$possiblecolors{'not_charged_try'};
418: $button=1;
419: } elsif ($award eq 'UNIT_FAIL') {
420: $message = "Units incorrect. ";
421: if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');} #Computer reads units as %s";
422: $bgcolor=$possiblecolors{'not_charged_try'};
423: $button=1;
424: } elsif ($award eq 'UNIT_NOTNEEDED') {
425: $message = "Only a number required.";# Computer reads units of %s";
426: $bgcolor=$possiblecolors{'not_charged_try'};
427: $button=1;
428: } elsif ($award eq 'NO_UNIT') {
429: $message = "Units required";
430: if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units')};
431: $bgcolor=$possiblecolors{'not_charged_try'};
432: $button=1;
433: } elsif ($award eq 'BAD_FORMULA') {
434: $message = "Unable to understand formula";
435: $bgcolor=$possiblecolors{'not_charged_try'};
436: $button=1;
437: } elsif ($award eq 'INCORRECT') {
438: $message = "Incorrect";
439: $bgcolor=$possiblecolors{'charged_try'};
440: $button=1;
441: } elsif ($award eq 'SUBMITTED') {
442: $message = "Your submission has been recorded.";
443: $bgcolor=$possiblecolors{'correct'};
444: $button=1;
445: } elsif ($award eq 'DRAFT') {
446: $message = "A draft copy has been saved.";
447: $bgcolor=$possiblecolors{'not_charged_try'};
448: $button=1;
449: } elsif ($award eq 'ASSIGNED_SCORE') {
450: $message = "A score has been assigned.";
451: $bgcolor=$possiblecolors{'correct'};
452: $button=0;
453: } else {
454: $message = "Unknown message: $award";
455: $button=1;
456: }
457: if (lc($Apache::lonhomework::problemstatus) eq 'no' &&
458: $Apache::inputtags::status[-1] ne 'SHOW_ANSWER') {
459: $message = "Answer Submitted";
460: $bgcolor=$possiblecolors{'correct'};
461: $button=1;
462: }
463: return ($button,$bgcolor,$message,$previousmsg);
464: }
465:
466: sub removealldata {
467: my ($id)=@_;
468: foreach my $key (keys(%Apache::lonhomework::results)) {
469: if (($key =~ /^resource\.\Q$id\E\./) && ($key !~ /\.collaborators$/)) {
470: &Apache::lonxml::debug("Removing $key");
471: delete($Apache::lonhomework::results{$key});
472: }
473: }
474: }
475:
476: sub setgradedata {
477: my ($award,$id,$previously_used) = @_;
478: # if the student already has it correct, don't modify the status
479: if ($Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
480: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
481: $Apache::lonhomework::results{"resource.$id.afterduedate"}=$award;
482: return '';
483: } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} !~
484: /^correct/ || $Apache::lonhomework::scantronmode ||
485: lc($Apache::lonhomework::problemstatus) eq 'no') {
486: #handle assignment of tries and solved status
487: my $solvemsg;
488: if ($Apache::lonhomework::scantronmode) {
489: $solvemsg='correct_by_scantron';
490: } else {
491: $solvemsg='correct_by_student';
492: }
493: if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
494: $Apache::lonhomework::results{"resource.$id.afterduedate"}='';
495: }
496: if ( $award eq 'ASSIGNED_SCORE') {
497: $Apache::lonhomework::results{"resource.$id.tries"} =
498: $Apache::lonhomework::history{"resource.$id.tries"} + 1;
499: $Apache::lonhomework::results{"resource.$id.solved"} =
500: $solvemsg;
501: my $numawards=scalar(@Apache::inputtags::response);
502: $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
503: foreach my $res (@Apache::inputtags::response) {
504: $Apache::lonhomework::results{"resource.$id.awarded"}+=
505: $Apache::lonhomework::results{"resource.$id.$res.awarded"};
506: }
507: if ($numawards > 0) {
508: $Apache::lonhomework::results{"resource.$id.awarded"}/=
509: $numawards;
510: }
511: } elsif ( $award eq 'APPROX_ANS' || $award eq 'EXACT_ANS' ) {
512: $Apache::lonhomework::results{"resource.$id.tries"} =
513: $Apache::lonhomework::history{"resource.$id.tries"} + 1;
514: $Apache::lonhomework::results{"resource.$id.solved"} =
515: $solvemsg;
516: $Apache::lonhomework::results{"resource.$id.awarded"} = '1';
517: } elsif ( $award eq 'INCORRECT' ) {
518: $Apache::lonhomework::results{"resource.$id.tries"} =
519: $Apache::lonhomework::history{"resource.$id.tries"} + 1;
520: if (lc($Apache::lonhomework::problemstatus) eq 'no') {
521: $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
522: }
523: $Apache::lonhomework::results{"resource.$id.solved"} =
524: 'incorrect_attempted'
525: } elsif ( $award eq 'SUBMITTED' ) {
526: $Apache::lonhomework::results{"resource.$id.tries"} =
527: $Apache::lonhomework::history{"resource.$id.tries"} + 1;
528: $Apache::lonhomework::results{"resource.$id.solved"} =
529: 'ungraded_attempted';
530: } elsif ( $award eq 'DRAFT' ) {
531: $Apache::lonhomework::results{"resource.$id.solved"} = '';
532: } elsif ( $award eq 'NO_RESPONSE' ) {
533: #no real response so delete any data that got stored
534: &removealldata($id);
535: return '';
536: } else {
537: $Apache::lonhomework::results{"resource.$id.solved"} =
538: 'incorrect_attempted';
539: if (lc($Apache::lonhomework::problemstatus) eq 'no') {
540: $Apache::lonhomework::results{"resource.$id.tries"} =
541: $Apache::lonhomework::history{"resource.$id.tries"} + 1;
542: $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
543: }
544: }
545:
546: # check if this was a previous submission if it was delete the
547: # unneeded data and update the previously_used attribute
548: if ( $previously_used eq 'PREVIOUSLY_USED') {
549: if (lc($Apache::lonhomework::problemstatus) ne 'no') {
550: delete($Apache::lonhomework::results{"resource.$id.tries"});
551: $Apache::lonhomework::results{"resource.$id.previous"} = '1';
552: }
553: } elsif ( $previously_used eq 'PREVIOUSLY_LAST') {
554: #delete all data as they student didn't do anything, but save
555: #the list of collaborators.
556: &removealldata($id);
557: #and since they didn't do anything we were never here
558: return '';
559: } else {
560: $Apache::lonhomework::results{"resource.$id.previous"} = '0';
561: }
562: } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} =~
563: /^correct/ ) {
564: #delete all data as they student already has it correct
565: &removealldata($id);
566: #and since they didn't do anything we were never here
567: return '';
568: }
569: $Apache::lonhomework::results{"resource.$id.award"} = $award;
570: }
571:
572: sub grade {
573: my ($target) = @_;
574: my $id = $Apache::inputtags::part;
575: my $response='';
576: if ( defined $ENV{'form.submitted'}) {
577: my @awards = ();
578: foreach $response (@Apache::inputtags::response) {
579: &Apache::lonxml::debug("looking for response.$id.$response.awarddetail");
580: my $value=$Apache::lonhomework::results{"resource.$id.$response.awarddetail"};
581: &Apache::lonxml::debug("keeping $value from $response for $id");
582: push (@awards,$value);
583: }
584: my $finalaward = &finalizeawards(@awards);
585: my $previously_used;
586: if ( $#Apache::inputtags::previous eq $#awards ) {
587: my $match=0;
588: my @matches;
589: foreach my $versionar (@Apache::inputtags::previous_version) {
590: foreach my $version (@$versionar) {
591: $matches[$version]++;
592: }
593: }
594: foreach my $elem (@matches) {if ($elem eq ($#awards+1)) {$match=1;}}
595: if ($match) {
596: $previously_used = 'PREVIOUSLY_LAST';
597: foreach my $value (@Apache::inputtags::previous) {
598: if ($value eq 'PREVIOUSLY_USED' ) {
599: $previously_used = $value;
600: last;
601: }
602: }
603: }
604: }
605: &Apache::lonxml::debug("final award $finalaward, $previously_used");
606: &setgradedata($finalaward,$id,$previously_used);
607: }
608: return '';
609: }
610:
611: sub gradestatus {
612: my ($id,$target) = @_;
613: my $showbutton = 1;
614: my $bgcolor = '';
615: my $message = '';
616: my $latemessage = '';
617: my $trystr='';
618: my $button='';
619: my $previousmsg='';
620:
621: my $status = $Apache::inputtags::status['-1'];
622: &Apache::lonxml::debug("gradestatus has :$status:");
623: if ( $status ne 'CLOSED' && $status ne 'UNAVAILABLE') {
624: my $award = $Apache::lonhomework::history{"resource.$id.award"};
625: my $solved = $Apache::lonhomework::history{"resource.$id.solved"};
626: my $previous = $Apache::lonhomework::history{"resource.$id.previous"};
627: &Apache::lonxml::debug("Found Award |$award|$solved|");
628: if ( $award ne '' || $solved ne '') {
629: &Apache::lonxml::debug('Getting message');
630: ($showbutton,$bgcolor,$message,$previousmsg) =
631: &decideoutput($award,$solved,$previous,$target);
632: if ($target eq 'tex') {
633: $message=' '.$message.' ';
634: } else {
635: $message="<td bgcolor=\"$bgcolor\">$message</td>";
636: if ($previousmsg) {
637: $previousmsg="<td bgcolor=\"#aaaaff\">$previousmsg</td>";
638: }
639: }
640: }
641: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
642: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
643: &Apache::lonxml::debug("got maxtries of :$maxtries:");
644: if ( $tries eq '' ) { $tries = '0'; }
645: if ( $maxtries eq '' ) { $maxtries = '2'; }
646: if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; }
647: if ( $showbutton ) {
648: if ($target eq 'tex') {
649: if ($ENV{'request.state'} ne "construct" && $Apache::lonhomework::type ne 'exam') {
650: $trystr = ' {\vskip 1 mm \small \textit{Tries} '.$tries.'/'.$maxtries.'} \vskip 2 mm ';
651: } else {
652: $trystr = '\vskip 0 mm ';
653: }
654: } else {
655: $trystr = "<td>Tries $tries/$maxtries</td>";
656: }
657: }
658: if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {$showbutton = 0;}
659: if ( $showbutton ) {
660: if ($target ne 'tex') {
661: $button = '<br /><input type="submit" name="submit" value="Submit Answer" />';
662: }
663: }
664: if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
665: #last submissions was after due date
666: if ($target eq 'tex') {
667: $latemessage=' The last submission was after the Due Date ';
668: } else {
669: $latemessage="<td bgcolor=\"#ffaaaa\">The last submission was after the Due Date</td>";
670: }
671: }
672: }
673: my $output= $previousmsg.$latemessage.$message.$trystr;
674: if ($output =~ /^\s*$/) {
675: return $button;
676: } else {
677: if ($target eq 'tex') {
678: return $button.' \vskip 0 mm '.$output.' ';
679: } else {
680: return $button.'<table><tr>'.$output.'</tr></table>';
681: }
682: }
683: }
684: 1;
685: __END__
686:
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