1: # The LearningOnline Network with CAPA
2: # input definitons
3: #
4: # $Id: inputtags.pm,v 1.177 2005/11/03 11:11:25 foxr 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: package Apache::inputtags;
29: use HTML::Entities();
30: use strict;
31: use Apache::loncommon;
32: use Apache::lonlocal;
33: use Apache::lonnet;
34:
35: BEGIN {
36: &Apache::lonxml::register('Apache::inputtags',('hiddenline','textfield','textline'));
37: }
38:
39: # Initializes a set of global variables used during the parse of the problem.
40: # (I like this way of documenting variables better since
41: # you don't have to rake your eyes over as much code rf).
42: #
43: # @Apache::inputtags::input - List of current input ids.
44: # @Apache::inputtags::inputlist - List of all input ids seen this problem.
45: # @Apache::inputtags::response - List of all current resopnse ids.
46: # @Apache::inputtags::responselist - List of all response ids seen this problem.
47: # @Apache::inputtags::hint - List of all hint ids.
48: # @Apache::inputtags::hintlist - List of all hint ids seen this problem.
49: # @Apache::inputtags::previous - List describing if specific responseds have been used
50: # @Apache::inputtags::previous_version - Submission responses were used in.
51: # $Apache::inputtags::part - Current part id (valid only in <problem>
52: # 0 if not in a part.
53: # @Apache::inputtags::partlist - List of part ids seen in the current <problem>
54: # @Apache::inputtags::status - List of problem statuses. First element
55: # is the status of the <problem> the remainder
56: # are for individual <part>s.
57: # %Apache::inputtags::params - Hash of defined parameters for the current
58: # response.
59: # @Apache::inputtags::import - List of all ids for <import> thes get
60: # join()ed and prepended.
61: # @Apache::inputtags::importlist - List of all import ids seen.
62: # $Apache::inputtags::response_with_no_part
63: # - Flag set true if we have seen a response
64: # that is not inside a <part>
65: # %Apache::inputtags::answertxt - <*response> tags store correct
66: # answer strings for display by <textline/>
67: # in this hash.
68: #
69: sub initialize_inputtags {
70: @Apache::inputtags::input=();
71: @Apache::inputtags::inputlist=();
72: @Apache::inputtags::response=();
73: @Apache::inputtags::responselist=();
74: @Apache::inputtags::hint=();
75: @Apache::inputtags::hintlist=();
76: @Apache::inputtags::previous=();
77: @Apache::inputtags::previous_version=();
78: $Apache::inputtags::part='';
79: @Apache::inputtags::partlist=();
80: @Apache::inputtags::status=();
81: %Apache::inputtags::params=();
82: @Apache::inputtags::import=();
83: @Apache::inputtags::importlist=();
84: $Apache::inputtags::response_with_no_part=0;
85: %Apache::inputtags::answertxt=();
86: }
87:
88: sub check_for_duplicate_ids {
89: my %check;
90: foreach my $id (@Apache::inputtags::partlist,
91: @Apache::inputtags::responselist,
92: @Apache::inputtags::hintlist,
93: @Apache::inputtags::importlist) {
94: $check{$id}++;
95: }
96: my @duplicates;
97: foreach my $id (sort(keys(%check))) {
98: if ($check{$id} > 1) {
99: push(@duplicates,$id);
100: }
101: }
102: if (@duplicates) {
103: &Apache::lonxml::error("Duplicated ids found, problem will operate incorrectly. Duplicated ids seen: ",join(', ',@duplicates));
104: }
105: }
106:
107: sub start_input {
108: my ($parstack,$safeeval)=@_;
109: my $id = &Apache::lonxml::get_param('id',$parstack,$safeeval);
110: if ($id eq '') { $id = $Apache::lonxml::curdepth; }
111: push (@Apache::inputtags::input,$id);
112: push (@Apache::inputtags::inputlist,$id);
113: return $id;
114: }
115:
116: sub end_input {
117: pop @Apache::inputtags::input;
118: return '';
119: }
120:
121: sub addchars {
122: my ($fieldid,$addchars)=@_;
123: my $output='';
124: foreach (split(/\,/,$addchars)) {
125: $output.='<a href="javascript:void(document.forms.lonhomework.'.
126: $fieldid.'.value+=\''.$_.'\')">'.$_.'</a> ';
127: }
128: return $output;
129: }
130:
131: sub start_textfield {
132: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
133: my $result = "";
134: my $id = &start_input($parstack,$safeeval);
135: my $resid=$Apache::inputtags::response[-1];
136: if ($target eq 'web') {
137: $Apache::lonxml::evaluate--;
138: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
139: my $partid=$Apache::inputtags::part;
140: my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$resid.submission"},'<>&"');
141: my $cols = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
142: if ( $cols eq '') { $cols = 80; }
143: my $rows = &Apache::lonxml::get_param('rows',$parstack,$safeeval);
144: if ( $rows eq '') { $rows = 16; }
145: my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
146: $result='';
147: if ($addchars) {
148: $result.=&addchars('HWVAL_'.$resid,$addchars);
149: }
150: push @Apache::lonxml::htmlareafields,'HWVAL_'.$resid;
151: $result.= '<textarea wrap="hard" name="HWVAL_'.$resid.'" id="HWVAL_'.$resid.'" '.
152: "rows=\"$rows\" cols=\"$cols\">".$oldresponse;
153: if ($oldresponse ne '') {
154:
155: #get rid of any startup text if the user has already responded
156: &Apache::lonxml::get_all_text("/textfield",$parser);
157: }
158: } else {
159: #right or wrong don't show it
160: #$result='<table border="1"><tr><td><i>'.$oldresponse.'</i></td></tr></table>';
161: $result='';
162: #get rid of any startup text
163: &Apache::lonxml::get_all_text("/textfield",$parser);
164: }
165: } elsif ($target eq 'grade') {
166: my $seedtext=&Apache::lonxml::get_all_text("/textfield",$parser);
167: if ($seedtext eq $env{'form.HWVAL_'.$resid}) {
168: # if the seed text is still there it wasn't a real submission
169: $env{'form.HWVAL_'.$resid}='';
170: }
171: } elsif ($target eq 'edit') {
172: $result.=&Apache::edit::tag_start($target,$token);
173: $result.=&Apache::edit::text_arg('Rows:','rows',$token,4);
174: $result.=&Apache::edit::text_arg('Columns:','cols',$token,4);
175: $result.=&Apache::edit::text_arg
176: ('Click-On Texts (comma sep):','addchars',$token,10);
177: my $bodytext=&Apache::lonxml::get_all_text("/textfield",$parser);
178: $result.=&Apache::edit::editfield($token->[1],$bodytext,'Text you want to appear by default:',80,2);
179: } elsif ($target eq 'modified') {
180: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
181: $safeeval,'rows','cols',
182: 'addchars');
183: if ($constructtag) {
184: $result = &Apache::edit::rebuild_tag($token);
185: } else {
186: $result=$token->[4];
187: }
188: $result.=&Apache::edit::modifiedfield("/textfield",$parser);
189: } elsif ($target eq 'tex') {
190: my $number_of_lines = &Apache::lonxml::get_param('rows',$parstack,$safeeval);
191: my $width_of_box = &Apache::lonxml::get_param('cols',$parstack,$safeeval);
192: if ($$tagstack[-2] eq 'essayresponse' and $Apache::lonhomework::type eq 'exam') {
193: $result = '\fbox{\fbox{\parbox{\textwidth-5mm}{';
194: for (my $i=0;$i<int $number_of_lines*2;$i++) {$result.='\strut \\\\ ';}
195: $result.='\strut \\\\\strut \\\\\strut \\\\\strut \\\\}}}';
196: } else {
197: my $TeXwidth=$width_of_box/80;
198: $result = '\vskip 1 mm \fbox{\fbox{\parbox{'.$TeXwidth.'\textwidth-5mm}{';
199: for (my $i=0;$i<int $number_of_lines*2;$i++) {$result.='\strut \\\\ ';}
200: $result.='}}}\vskip 2 mm ';
201: }
202: }
203: return $result;
204: }
205:
206: sub end_textfield {
207: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
208: my $result;
209: if ($target eq 'web') {
210: $Apache::lonxml::evaluate++;
211: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
212: return "</textarea>";
213: }
214: } elsif ($target eq 'edit') {
215: $result=&Apache::edit::end_table();
216: }
217: &end_input;
218: return $result;
219: }
220:
221: sub start_textline {
222: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
223: my $result = "";
224: if ($target eq 'web') {
225: $Apache::lonxml::evaluate--;
226: my $partid=$Apache::inputtags::part;
227: my $id=$Apache::inputtags::response[-1];
228: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
229: my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
230: my $maxlength;
231: if ($size eq '') { $size=20; } else {
232: if ($size < 20) { $maxlength=$size; }
233: }
234: my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"},'<>&"');
235: if ($Apache::lonhomework::type ne 'exam') {
236: my $addchars=&Apache::lonxml::get_param('addchars',$parstack,$safeeval);
237: $result='';
238: if ($addchars) {
239: $result.=&addchars('HWVAL_'.$id,$addchars);
240: }
241: my $readonly=&Apache::lonxml::get_param('readonly',$parstack,
242: $safeeval);
243: if (lc($readonly) eq 'yes') {
244: $readonly=' readonly="readonly" ';
245: } else {
246: $readonly='';
247: }
248: $result.= '<input type="text" '.$readonly.' name="HWVAL_'.$id.'" value="'.
249: $oldresponse.'" size="'.$size.'" maxlength="'.$maxlength.'" />';
250: }
251: } else {
252: #right or wrong don't show what was last typed in.
253: $result='<b>'.$Apache::inputtags::answertxt{$id}.'</b>';
254: #$result='';
255: }
256: } elsif ($target eq 'edit') {
257: $result=&Apache::edit::tag_start($target,$token);
258: $result.=&Apache::edit::text_arg('Size:','size',$token,'5').
259: &Apache::edit::text_arg('Click-On Texts (comma sep):',
260: 'addchars',$token,10);
261: $result.=&Apache::edit::select_arg('Readonly:','readonly',
262: ['no','yes'],$token);
263: $result.=&Apache::edit::end_row();
264: $result.=&Apache::edit::end_table();
265: } elsif ($target eq 'modified') {
266: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
267: $safeeval,'size',
268: 'addchars','readonly');
269: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
270: } elsif ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
271: my $size = &Apache::lonxml::get_param('size',$parstack,$safeeval);
272: if ($size != 0) {$size=$size*2; $size.=' mm';} else {$size='40 mm';}
273: $result='\framebox['.$size.'][s]{\tiny\strut}';
274: }
275: return $result;
276: }
277:
278: sub end_textline {
279: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
280: if ($target eq 'web') { $Apache::lonxml::evaluate++; }
281: elsif ($target eq 'edit') { return ('','no'); }
282: return "";
283: }
284:
285: sub start_hiddenline {
286: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
287: my $result = "";
288: if ($target eq 'web') {
289: $Apache::lonxml::evaluate--;
290: if ($Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
291: my $partid=$Apache::inputtags::part;
292: my $id=$Apache::inputtags::response[-1];
293: my $oldresponse = &HTML::Entities::encode($Apache::lonhomework::history{"resource.$partid.$id.submission"},'<>&"');
294: if ($Apache::lonhomework::type ne 'exam') {
295: $result= '<input type="hidden" name="HWVAL_'.$id.'" value="'.
296: $oldresponse.'" />';
297: }
298: }
299: } elsif ($target eq 'edit') {
300: $result=&Apache::edit::tag_start($target,$token);
301: $result.=&Apache::edit::end_table;
302: }
303: return $result;
304: }
305:
306: sub end_hiddenline {
307: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
308: if ($target eq 'web') { $Apache::lonxml::evaluate++; }
309: elsif ($target eq 'edit') { return ('','no'); }
310: return "";
311: }
312:
313: # $part -> partid
314: # $id -> responseid
315: # $uploadefiletypes -> comma seperated list of extensions allowed or * for any
316: # $which -> 'uploadedonly' -> only newly uploaded files
317: # 'portfolioonly' -> only allow files from portfolio
318: # 'both' -> allow files from either location
319: # $extratext -> additional text to go between the link and the input box
320: # returns a table row <tr>
321: sub file_selector {
322: my ($part,$id,$uploadedfiletypes,$which,$extratext)=@_;
323: if (!$uploadedfiletypes) { return ''; }
324:
325: my $jspart=$part;
326: $jspart=~s/\./_/g;
327:
328: my $result;
329:
330: $result.='<tr><td>';
331: if ($uploadedfiletypes ne '*') {
332: $result.=
333: &mt('Allowed filetypes: <b>[_1]</b>',$uploadedfiletypes).'<br />';
334: }
335: if ($which eq 'uploadonly' || $which eq 'both') {
336: $result.=&mt('Submit a file: (only one file can be uploaded)').
337: ' <br /><input type="file" size="50" name="HWFILE'.
338: $jspart.'_'.$id.'" /><br />';
339: my $uploadedfile= &HTML::Entities::encode($Apache::lonhomework::history{"resource.$part.$id.uploadedfile"},'<>&"');
340:
341: if ($uploadedfile) {
342: my $url=$Apache::lonhomework::history{"resource.$part.$id.uploadedurl"};
343: &Apache::lonxml::extlink($url);
344: &Apache::lonnet::allowuploaded('/adm/essayresponse',$url);
345: my $icon=&Apache::loncommon::icon($url);
346: my $curfile='<a href="'.$url.'"><img src="'.$icon.
347: '" border="0" />'.$uploadedfile.'</a>';
348: $result.=&mt('Currently submitted: <tt>[_1]</tt>',$curfile);
349: } else {
350: #$result.=&mt('(Hand in a file you have prepared on your computer)');
351: }
352: }
353: if ( $which eq 'both') {
354: $result.='<br />'.'<strong>'.&mt('OR:').'</strong><br />';
355: }
356: if ($which eq 'portfolioonly' || $which eq 'both') {
357: $result.=$extratext.'<a href='."'".'javascript:void(window.open("/adm/portfolio?mode=selectfile&fieldname=HWPORT'.$jspart.'_'.$id.'","cat","height=600,width=800,scrollbars=1,resizable=1,menubar=2,location=1"))'."'".'>'.
358: &mt('Select Portfolio Files').'</a><br />'.
359: '<input type="text" size="50" name="HWPORT'.$jspart.'_'.$id.'" value="" />'.
360: '<br />';
361: if ($Apache::lonhomework::history{"resource.$part.$id.portfiles"}=~/[^\s]/){
362: my @filelist;
363: foreach my $file (split(',',&Apache::lonnet::unescape($Apache::lonhomework::history{"resource.$part.$id.portfiles"}))) {
364: my (undef,undef,$domain,$user)=&Apache::lonxml::whichuser();
365: my $url="/uploaded/$domain/$user/portfolio$file";
366: my $icon=&Apache::loncommon::icon($url);
367: push(@filelist,'<a href="'.$url.'"><img src="'.$icon.
368: '" border="0" />'.$file.'</a>');
369: }
370: $result.=&mt("Portfolio files previously selected: <strong>[_1]</strong>",join(', ',@filelist));
371: }
372: }
373: $result.='</td></tr>';
374: return $result;
375: }
376:
377: sub checkstatus {
378: my ($value,$awardref,$msgref)=@_;
379: for (my $i=0;$i<=$#$awardref;$i++) {
380: if ($$awardref[$i] eq $value) {
381: return ($$awardref[$i],$$msgref[$i]);
382: }
383: }
384: return(undef,undef);
385: }
386:
387: sub finalizeawards {
388: my ($awardref,$msgref)=@_;
389: my $result=undef;
390: my $award;
391: my $msg;
392: if ($#$awardref == -1) { $result = "NO_RESPONSE"; }
393: if ($result eq '' ) {
394: my $blankcount;
395: foreach $award (@$awardref) {
396: if ($award eq '') {
397: $result='MISSING_ANSWER';
398: $blankcount++;
399: }
400: }
401: if ($blankcount == ($#$awardref + 1)) { $result = 'NO_RESPONSE'; }
402: }
403: if (defined($result)) { return ($result,$msg); }
404: foreach my $possibleaward ('MISSING_ANSWER', 'ERROR', 'NO_RESPONSE',
405: 'TOO_LONG', 'UNIT_INVALID_INSTRUCTOR',
406: 'UNIT_INVALID_STUDENT', 'UNIT_IRRECONCIBLE',
407: 'UNIT_FAIL', 'NO_UNIT',
408: 'UNIT_NOTNEEDED', 'WANTED_NUMERIC',
409: 'BAD_FORMULA', 'SIG_FAIL', 'INCORRECT',
410: 'MISORDERED_RANK', 'INVALID_FILETYPE',
411: 'DRAFT', 'SUBMITTED', 'ASSIGNED_SCORE',
412: 'APPROX_ANS', 'EXACT_ANS','COMMA_FAIL') {
413: ($result,$msg)=&checkstatus($possibleaward,$awardref,$msgref);
414: if (defined($result)) { return ($result,$msg); }
415: }
416: return ('ERROR',undef);
417: }
418:
419: sub decideoutput {
420: my ($award,$awarded,$awardmsg,$solved,$previous,$target)=@_;
421: my $message='';
422: my $button=0;
423: my $previousmsg;
424: my $bgcolor='orange';
425: my $added_computer_text=0;
426: my %possiblecolors =
427: ( 'correct' => '#aaffaa',
428: 'charged_try' => '#ffaaaa',
429: 'not_charged_try' => '#ffffaa',
430: 'no_message' => '#fffff',
431: );
432:
433: if ($previous) { $previousmsg=&mt('You have entered that answer before'); }
434:
435: if ($solved =~ /^correct/) {
436: $bgcolor=$possiblecolors{'correct'};
437: $message=&mt('You are correct.');
438: if ($awarded < 1 && $awarded > 0) {
439: $message=&mt('You are partially correct.');
440: $bgcolor=$possiblecolors{'not_charged_try'};
441: } elsif ($awarded < 1) {
442: $message=&mt('Incorrect.');
443: $bgcolor=$possiblecolors{'charged_try'};
444: }
445: if ($env{'request.filename'} =~
446: m|/res/lib/templates/examupload.problem$|) {
447: $message = &mt("A score has been assigned.");
448: $added_computer_text=1;
449: } else {
450: if ($target eq 'tex') {
451: $message = '\textbf{'.$message.'}';
452: } else {
453: $message = "<b>".$message."</b>";
454: $message.=" ".&mt("Computer's answer now shown above.");
455: }
456: $added_computer_text=1;
457: unless ($env{'course.'.
458: $env{'request.course.id'}.
459: '.disable_receipt_display'} eq 'yes') {
460: $message.=(($target eq 'web')?'<br />':' ').
461: &mt('Your receipt is').' '.&Apache::lonnet::receipt($Apache::inputtags::part).
462: (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
463: }
464: }
465: $button=0;
466: $previousmsg='';
467: } elsif ($solved =~ /^excused/) {
468: if ($target eq 'tex') {
469: $message = ' \textbf{'.&mt('You are excused from the problem.').'} ';
470: } else {
471: $message = "<b>".&mt('You are excused from the problem.')."</b>";
472: }
473: $bgcolor=$possiblecolors{'charged_try'};
474: $button=0;
475: $previousmsg='';
476: } elsif ($award eq 'EXACT_ANS' || $award eq 'APPROX_ANS' ) {
477: if ($solved =~ /^incorrect/ || $solved eq '') {
478: $message = &mt("Incorrect").".";
479: $bgcolor=$possiblecolors{'charged_try'};
480: $button=1;
481: } else {
482: if ($target eq 'tex') {
483: $message = '\textbf{'.&mt('You are correct.').'}';
484: } else {
485: $message = "<b>".&mt('You are correct.')."</b>";
486: $message.=" ".&mt("Computer's answer now shown above.");
487: }
488: $added_computer_text=1;
489: unless ($env{'course.'.
490: $env{'request.course.id'}.
491: '.disable_receipt_display'} eq 'yes') {
492: $message.=(($target eq 'web')?'<br />':' ').
493: 'Your receipt is '.&Apache::lonnet::receipt($Apache::inputtags::part).
494: (($target eq 'web')?&Apache::loncommon::help_open_topic('Receipt'):'');
495: }
496: $bgcolor=$possiblecolors{'correct'};
497: $button=0;
498: $previousmsg='';
499: }
500: } elsif ($award eq 'NO_RESPONSE') {
501: $message = '';
502: $bgcolor=$possiblecolors{'no_feedback'};
503: $button=1;
504: } elsif ($award eq 'MISSING_ANSWER') {
505: $message = &mt('Some items were not submitted.');
506: $bgcolor=$possiblecolors{'not_charged_try'};
507: $button = 1;
508: } elsif ($award eq 'ERROR') {
509: $message = &mt('An error occured while grading your answer.');
510: $bgcolor=$possiblecolors{'not_charged_try'};
511: $button = 1;
512: } elsif ($award eq 'TOO_LONG') {
513: $message = &mt("The submitted answer was too long.");
514: $bgcolor=$possiblecolors{'not_charged_try'};
515: $button=1;
516: } elsif ($award eq 'WANTED_NUMERIC') {
517: $message = &mt("This question expects a numeric answer.");
518: $bgcolor=$possiblecolors{'not_charged_try'};
519: $button=1;
520: } elsif ($award eq 'MISORDERED_RANK') {
521: $message = &mt('You have provided an invalid ranking');
522: if ($target ne 'tex') {
523: $message.=', '.&mt('please refer to').' '.&Apache::loncommon::help_open_topic('Ranking_Problems','help on ranking problems');
524: }
525: $bgcolor=$possiblecolors{'not_charged_try'};
526: $button=1;
527: } elsif ($award eq 'INVALID_FILETYPE') {
528: $message = &mt('Submission won\'t be graded. The type of file submitted is not allowed.');
529: $bgcolor=$possiblecolors{'not_charged_try'};
530: $button=1;
531: } elsif ($award eq 'SIG_FAIL') {
532: my ($used,$min,$max)=split(':',$awardmsg);
533: my $word;
534: if ($used < $min) { $word=&mt('more'); }
535: if ($used > $max) { $word=&mt('fewer'); }
536: $message = &mt("Submission not graded. Use [_2] digits.",$used,$word);
537: $bgcolor=$possiblecolors{'not_charged_try'};
538: $button=1;
539: } elsif ($award eq 'UNIT_INVALID_INSTRUCTOR') {
540: $message = &mt('Error in instructor specifed unit. This error has been reported to the instructor.', $awardmsg);
541: if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');}
542: $bgcolor=$possiblecolors{'not_charged_try'};
543: $button=1;
544: } elsif ($award eq 'UNIT_INVALID_STUDENT') {
545: $message = &mt('Unable to interpret units. Computer reads units as "[_1]".',&markup_unit($awardmsg,$target));
546: if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');}
547: $bgcolor=$possiblecolors{'not_charged_try'};
548: $button=1;
549: } elsif ($award eq 'UNIT_FAIL' || $award eq 'UNIT_IRRECONCIBLE') {
550: $message = &mt('Incompatible units. No conversion found between "[_1]" and the required units.',&markup_unit($awardmsg,$target));
551: if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units');}
552: $bgcolor=$possiblecolors{'not_charged_try'};
553: $button=1;
554: } elsif ($award eq 'UNIT_NOTNEEDED') {
555: $message = &mt('Only a number required. Computer reads units of "[_1]".',&markup_unit($awardmsg,$target));
556: $bgcolor=$possiblecolors{'not_charged_try'};
557: $button=1;
558: } elsif ($award eq 'NO_UNIT') {
559: $message = &mt("Units required").'.';
560: if ($target ne 'tex') {$message.=&Apache::loncommon::help_open_topic('Physical_Units')};
561: $bgcolor=$possiblecolors{'not_charged_try'};
562: $button=1;
563: } elsif ($award eq 'COMMA_FAIL') {
564: $message = &mt("Proper comma separation is required").'.';
565: $bgcolor=$possiblecolors{'not_charged_try'};
566: $button=1;
567: } elsif ($award eq 'BAD_FORMULA') {
568: $message = &mt("Unable to understand formula");
569: $bgcolor=$possiblecolors{'not_charged_try'};
570: $button=1;
571: } elsif ($award eq 'INCORRECT') {
572: $message = &mt("Incorrect").'.';
573: $bgcolor=$possiblecolors{'charged_try'};
574: $button=1;
575: } elsif ($award eq 'SUBMITTED') {
576: $message = &mt("Your submission has been recorded.");
577: $bgcolor=$possiblecolors{'correct'};
578: $button=1;
579: } elsif ($award eq 'DRAFT') {
580: $message = &mt("A draft copy has been saved.");
581: $bgcolor=$possiblecolors{'not_charged_try'};
582: $button=1;
583: } elsif ($award eq 'ASSIGNED_SCORE') {
584: $message = &mt("A score has been assigned.");
585: $bgcolor=$possiblecolors{'correct'};
586: $button=0;
587: } elsif ($award eq '') {
588: $bgcolor=$possiblecolors{'not_charged_try'};
589: $button=1;
590: } else {
591: $message = &mt("Unknown message").": $award";
592: $button=1;
593: }
594: if (lc($Apache::lonhomework::problemstatus) eq 'no' &&
595: $Apache::inputtags::status[-1] ne 'SHOW_ANSWER') {
596: $message = &mt("Answer Submitted: Your final submission will be graded after the due date.");
597: $bgcolor=$possiblecolors{'correct'};
598: $button=1;
599: }
600: if ($Apache::inputtags::status[-1] eq 'SHOW_ANSWER' &&
601: !$added_computer_text && $target ne 'tex') {
602: $message.=" ".&mt("Computer's answer now shown above.");
603: $added_computer_text=1;
604: }
605: return ($button,$bgcolor,$message,$previousmsg);
606: }
607:
608: sub markup_unit {
609: my ($unit,$target)=@_;
610: if ($target eq 'tex') {
611: return '\texttt{'.&Apache::lonxml::latex_special_symbols($unit).'}';
612: } else {
613: return "<tt>".$unit."</tt>";
614: }
615: }
616:
617: sub removealldata {
618: my ($id)=@_;
619: foreach my $key (keys(%Apache::lonhomework::results)) {
620: if (($key =~ /^resource\.\Q$id\E\./) && ($key !~ /\.collaborators$/)) {
621: &Apache::lonxml::debug("Removing $key");
622: delete($Apache::lonhomework::results{$key});
623: }
624: }
625: }
626:
627: sub hidealldata {
628: my ($id)=@_;
629: foreach my $key (keys(%Apache::lonhomework::results)) {
630: if (($key =~ /^resource\.\Q$id\E\./) && ($key !~ /\.collaborators$/)) {
631: &Apache::lonxml::debug("Hidding $key");
632: my $newkey=$key;
633: $newkey=~s/^(resource\.\Q$id\E\.[^\.]+\.)(.*)$/${1}hidden${2}/;
634: $Apache::lonhomework::results{$newkey}=
635: $Apache::lonhomework::results{$key};
636: delete($Apache::lonhomework::results{$key});
637: }
638: }
639: }
640:
641: sub setgradedata {
642: my ($award,$msg,$id,$previously_used) = @_;
643: if ($Apache::lonhomework::scantronmode &&
644: &Apache::lonnet::validCODE($env{'form.CODE'})) {
645: $Apache::lonhomework::results{"resource.CODE"}=$env{'form.CODE'};
646: } elsif ($Apache::lonhomework::scantronmode &&
647: $env{'form.CODE'} eq '' &&
648: $Apache::lonhomework::history{"resource.CODE"} ne '') {
649: $Apache::lonhomework::results{"resource.CODE"}='';
650: }
651:
652: if (!$Apache::lonhomework::scantronmode &&
653: $Apache::inputtags::status['-1'] ne 'CAN_ANSWER' &&
654: $Apache::inputtags::status['-1'] ne 'CANNOT_ANSWER') {
655: $Apache::lonhomework::results{"resource.$id.afterduedate"}=$award;
656: return '';
657: } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} !~
658: /^correct/ || $Apache::lonhomework::scantronmode ||
659: lc($Apache::lonhomework::problemstatus) eq 'no') {
660: # the student doesn't already have it correct,
661: # or we are in a mode (scantron orno problem status) where a correct
662: # can become incorrect
663: # handle assignment of tries and solved status
664: my $solvemsg;
665: if ($Apache::lonhomework::scantronmode) {
666: $solvemsg='correct_by_scantron';
667: } else {
668: $solvemsg='correct_by_student';
669: }
670: if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
671: $Apache::lonhomework::results{"resource.$id.afterduedate"}='';
672: }
673: if ( $award eq 'ASSIGNED_SCORE') {
674: $Apache::lonhomework::results{"resource.$id.tries"} =
675: $Apache::lonhomework::history{"resource.$id.tries"} + 1;
676: $Apache::lonhomework::results{"resource.$id.solved"} =
677: $solvemsg;
678: my $numawards=scalar(@Apache::inputtags::response);
679: $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
680: foreach my $res (@Apache::inputtags::response) {
681: $Apache::lonhomework::results{"resource.$id.awarded"}+=
682: $Apache::lonhomework::results{"resource.$id.$res.awarded"};
683: }
684: if ($numawards > 0) {
685: $Apache::lonhomework::results{"resource.$id.awarded"}/=
686: $numawards;
687: }
688: } elsif ( $award eq 'APPROX_ANS' || $award eq 'EXACT_ANS' ) {
689: $Apache::lonhomework::results{"resource.$id.tries"} =
690: $Apache::lonhomework::history{"resource.$id.tries"} + 1;
691: $Apache::lonhomework::results{"resource.$id.solved"} =
692: $solvemsg;
693: $Apache::lonhomework::results{"resource.$id.awarded"} = '1';
694: } elsif ( $award eq 'INCORRECT' ) {
695: $Apache::lonhomework::results{"resource.$id.tries"} =
696: $Apache::lonhomework::history{"resource.$id.tries"} + 1;
697: if (lc($Apache::lonhomework::problemstatus) eq 'no' ||
698: $Apache::lonhomework::scantronmode) {
699: $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
700: }
701: $Apache::lonhomework::results{"resource.$id.solved"} =
702: 'incorrect_attempted';
703: } elsif ( $award eq 'SUBMITTED' ) {
704: $Apache::lonhomework::results{"resource.$id.tries"} =
705: $Apache::lonhomework::history{"resource.$id.tries"} + 1;
706: $Apache::lonhomework::results{"resource.$id.solved"} =
707: 'ungraded_attempted';
708: } elsif ( $award eq 'DRAFT' ) {
709: $Apache::lonhomework::results{"resource.$id.solved"} = '';
710: } elsif ( $award eq 'NO_RESPONSE' ) {
711: #no real response so delete any data that got stored
712: &removealldata($id);
713: return '';
714: } else {
715: $Apache::lonhomework::results{"resource.$id.solved"} =
716: 'incorrect_attempted';
717: if (lc($Apache::lonhomework::problemstatus) eq 'no' ||
718: $Apache::lonhomework::scantronmode) {
719: $Apache::lonhomework::results{"resource.$id.tries"} =
720: $Apache::lonhomework::history{"resource.$id.tries"} + 1;
721: $Apache::lonhomework::results{"resource.$id.awarded"} = 0;
722: }
723: }
724: if (defined($msg)) {
725: $Apache::lonhomework::results{"resource.$id.awardmsg"} = $msg;
726: }
727: # did either of the overall awards chage? If so ignore the
728: # previous check
729: if (($Apache::lonhomework::results{"resource.$id.awarded"} eq
730: $Apache::lonhomework::history{"resource.$id.awarded"}) &&
731: ($Apache::lonhomework::results{"resource.$id.solved"} eq
732: $Apache::lonhomework::history{"resource.$id.solved"})) {
733: # check if this was a previous submission if it was delete the
734: # unneeded data and update the previously_used attribute
735: if ( $previously_used eq 'PREVIOUSLY_USED') {
736: if (lc($Apache::lonhomework::problemstatus) ne 'no') {
737: delete($Apache::lonhomework::results{"resource.$id.tries"});
738: $Apache::lonhomework::results{"resource.$id.previous"} = '1';
739: }
740: } elsif ( $previously_used eq 'PREVIOUSLY_LAST') {
741: #delete all data as they student didn't do anything, but save
742: #the list of collaborators.
743: &removealldata($id);
744: #and since they didn't do anything we were never here
745: return '';
746: } else {
747: $Apache::lonhomework::results{"resource.$id.previous"} = '0';
748: }
749: }
750: } elsif ( $Apache::lonhomework::history{"resource.$id.solved"} =~
751: /^correct/ ) {
752: #delete all data as they student already has it correct
753: &removealldata($id);
754: #and since they didn't do anything we were never here
755: return '';
756: }
757: $Apache::lonhomework::results{"resource.$id.award"} = $award;
758: }
759:
760: sub grade {
761: my ($target) = @_;
762: my $id = $Apache::inputtags::part;
763: my $response='';
764: if ( defined $env{'form.submitted'}) {
765: my (@awards,@msgs);
766: foreach $response (@Apache::inputtags::response) {
767: &Apache::lonxml::debug("looking for response.$id.$response.awarddetail");
768: my $value=$Apache::lonhomework::results{"resource.$id.$response.awarddetail"};
769: &Apache::lonxml::debug("keeping $value from $response for $id");
770: push (@awards,$value);
771: $value=$Apache::lonhomework::results{"resource.$id.$response.awardmsg"};
772: &Apache::lonxml::debug("got message $value from $response for $id");
773: push (@msgs,$value);
774: }
775: my ($finalaward,$msg) = &finalizeawards(\@awards,\@msgs);
776: my $previously_used;
777: if ( $#Apache::inputtags::previous eq $#awards ) {
778: my $match=0;
779: my @matches;
780: foreach my $versionar (@Apache::inputtags::previous_version) {
781: foreach my $version (@$versionar) {
782: $matches[$version]++;
783: }
784: }
785: foreach my $elem (@matches) {if ($elem eq ($#awards+1)) {$match=1;}}
786: if ($match) {
787: $previously_used = 'PREVIOUSLY_LAST';
788: foreach my $value (@Apache::inputtags::previous) {
789: if ($value eq 'PREVIOUSLY_USED' ) {
790: $previously_used = $value;
791: last;
792: }
793: }
794: }
795: }
796: &Apache::lonxml::debug("final award $finalaward, $previously_used, message $msg");
797: &setgradedata($finalaward,$msg,$id,$previously_used);
798: }
799: return '';
800: }
801:
802: sub gradestatus {
803: my ($id,$target) = @_;
804: my $showbutton = 1;
805: my $bgcolor = '';
806: my $message = '';
807: my $latemessage = '';
808: my $trystr='';
809: my $button='';
810: my $previousmsg='';
811:
812: my $status = $Apache::inputtags::status['-1'];
813: &Apache::lonxml::debug("gradestatus has :$status:");
814: if ( $status ne 'CLOSED' && $status ne 'UNAVAILABLE' &&
815: $status ne 'INVALID_ACCESS') {
816: my $award = $Apache::lonhomework::history{"resource.$id.award"};
817: my $awarded = $Apache::lonhomework::history{"resource.$id.awarded"};
818: my $solved = $Apache::lonhomework::history{"resource.$id.solved"};
819: my $previous = $Apache::lonhomework::history{"resource.$id.previous"};
820: my $awardmsg = $Apache::lonhomework::history{"resource.$id.awardmsg"};
821: &Apache::lonxml::debug("Found Award |$award|$solved|$awardmsg");
822: if ( $award ne '' || $solved ne '' || $status eq 'SHOW_ANSWER') {
823: &Apache::lonxml::debug('Getting message');
824: ($showbutton,$bgcolor,$message,$previousmsg) =
825: &decideoutput($award,$awarded,$awardmsg,$solved,$previous,
826: $target);
827: if ($target eq 'tex') {
828: $message='\vskip 2 mm '.$message.' ';
829: } else {
830: $message="<td bgcolor=\"$bgcolor\">$message</td>";
831: if ($previousmsg) {
832: $previousmsg="<td bgcolor=\"#aaaaff\">$previousmsg</td>";
833: }
834: }
835: }
836: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
837: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
838: &Apache::lonxml::debug("got maxtries of :$maxtries:");
839: #if tries are set to negative turn off the Tries/Button and messages
840: if (defined($maxtries) && $maxtries < 0) { return ''; }
841: if ( $tries eq '' ) { $tries = '0'; }
842: if ( $maxtries eq '' ) { $maxtries = '2'; }
843: if ( $maxtries eq 'con_lost' ) { $maxtries = '0'; }
844: my $tries_text=&mt('Tries');
845: if ( $Apache::lonhomework::type eq 'survey' ||
846: $Apache::lonhomework::parsing_a_task) {
847: $tries_text=&mt('Submissions');
848: }
849: if ( $showbutton ) {
850: if ($target eq 'tex') {
851: if ($env{'request.state'} ne "construct" && $Apache::lonhomework::type ne 'exam' && $env{'form.suppress_tries'} ne 'yes') {
852: $trystr = ' {\vskip 1 mm \small \textit{'.$tries_text.'} '.$tries.'/'.$maxtries.'} \vskip 2 mm ';
853: } else {
854: $trystr = '\vskip 0 mm ';
855: }
856: } else {
857: $trystr = "<td><nobr>".$tries_text." $tries";
858: if ($Apache::lonhomework::parsing_a_task) {
859: } elsif($env{'request.state'} ne 'construct') {
860: $trystr.="/$maxtries";
861: } else {
862: if (defined($Apache::inputtags::params{'maxtries'})) {
863: $trystr.="/".$Apache::inputtags::params{'maxtries'};
864: }
865: }
866: $trystr.="</nobr></td>";
867: }
868: }
869: if ( $status eq 'SHOW_ANSWER' || $status eq 'CANNOT_ANSWER') {$showbutton = 0;}
870: if ( $showbutton ) {
871: if ($target ne 'tex') {
872: $button = '<input type="submit" name="submit_'.$id.'" value="'.&mt('Submit Answer').'" />';
873: }
874: }
875: if ($Apache::lonhomework::history{"resource.$id.afterduedate"}) {
876: #last submissions was after due date
877: $latemessage=&mt(' The last submission was after the Due Date ');;
878: if ($target eq 'web') {
879: $latemessage='<td bgcolor="#ffaaaa">'.$latemessage.'</td>';
880: }
881: }
882: }
883: my $output= $previousmsg.$latemessage.$message.$trystr;
884: if ($output =~ /^\s*$/) {
885: return $button;
886: } else {
887: if ($target eq 'tex') {
888: return $button.' \vskip 0 mm '.$output.' ';
889: } else {
890: return '<table><tr><td>'.$button.'</td>'.$output.'</tr></table>';
891: }
892: }
893: }
894: 1;
895: __END__
896:
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