1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
3: #
4: # $Id: bridgetask.pm,v 1.36 2005/05/31 21:11:56 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:
30:
31: package Apache::bridgetask;
32:
33: use strict;
34: use Apache::lonnet;
35: use Apache::File();
36: use Apache::lonmenu;
37: use Apache::lonlocal;
38: use Apache::lonxml;
39: use Time::HiRes qw( gettimeofday tv_interval );
40:
41: BEGIN {
42: &Apache::lonxml::register('Apache::bridgetask',('Task','IntroParagraph','Dimension','Instance','InstanceText','Criteria','ClosingParagraph'));
43: }
44:
45: sub initialize_bridgetask {
46: # id of current Dimension, 0 means that no dimension is current
47: # (inside <Task> only)
48: $Apache::bridgetask::dimension='';
49: # list of all Dimension ids seen
50: @Apache::bridgetask::dimensionlist=();
51: # mandatory attribute of all Dimensions seen
52: %Apache::bridgetask::dimensionmandatory=();
53: # list of all current Instance ids
54: @Apache::bridgetask::instance=();
55: # list of all Instance ids seen in this problem
56: @Apache::bridgetask::instancelist=();
57: # key of queud user data that we are currently grading
58: $Apache::bridgetask::queue_key='';
59: }
60:
61: sub proctor_check_auth {
62: my ($slot_name,$slot)=@_;
63: my $user=$env{'form.proctorname'};
64: my $domain=$env{'form.proctordomain'};
65:
66: my @allowed=split(",",$slot->{'proctor'});
67: foreach my $possible (@allowed) {
68: my ($puser,$pdom)=(split('@',$possible));
69: if ($puser eq $user && $pdom eq $domain) {
70: my $authhost=&Apache::lonnet::authenticate($puser,$env{'form.proctorpassword'},$pdom);
71: if ($authhost ne 'no_host') {
72: my $version=
73: $Apache::lonhomework::results{'resource.version'}=
74: ++$Apache::lonhomework::history{'resource.version'};
75: $Apache::lonhomework::results{"resource.$version.checkedin"}=
76: $user.'@'.$domain;
77: $Apache::lonhomework::results{"resource.$version.checkedin.slot"}=
78: $slot_name;
79: foreach my $key (keys(%Apache::lonhomework::history)) {
80: if ($key=~/^resource\.0\./) {
81: $Apache::lonhomework::results{$key}='';
82: }
83: }
84: return 1;
85: }
86: }
87: }
88: return 0;
89: }
90:
91: sub get_version {
92: my ($version,$previous);
93: if ($env{'form.previousversion'} &&
94: $env{'form.previousversion'} ne 'current' &&
95: defined($Apache::lonhomework::history{'resource.'.$env{'form.previousversion'}.'.status'})) {
96: $version=$env{'form.previousversion'};
97: $previous=1;
98: } else {
99: $version=$Apache::lonhomework::history{'resource.version'};
100: $previous=0;
101: }
102: if (wantarray) {
103: return ($version,$previous);
104: }
105: return $version;
106: }
107:
108: sub add_previous_version_button {
109: my ($status)=@_;
110: my $result;
111: if ($Apache::lonhomework::history{'resource.version'} eq '') {
112: return '';
113: }
114: if ($Apache::lonhomework::history{'resource.version'} < 2 &&
115: $status ne 'NEEDS_CHECKIN') {
116: return '';
117: }
118: my $version=&get_version();
119: if ($env{'form.previousversion'} ne '' &&
120: $env{'form.previousversion'} eq $version) {
121: $result.="<h3>".&mt("Showing previous version [_1]",$version).
122: "</h3>\n";
123: }
124: my @to_show;
125: foreach my $test_version (1..$Apache::lonhomework::history{'resource.version'}) {
126: if (defined($Apache::lonhomework::history{'resource.'.$test_version.'.status'})) {
127: push(@to_show,$test_version);
128: }
129: }
130: my $list='<option>'.
131: join("</option>\n<option>",@to_show).
132: "</option>\n";
133: $list.='<option value="current">'.&mt('Current').'</option>';
134: $result.='<form name="getprevious" method="POST" action="';
135: my $uri=$env{'request.uri'};
136: if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
137: $result.=$uri.'">'.
138: &mt(' Show a previously done version: [_1]','<select onchange="this.form.submit()" name="previousversion">
139: <option>'.&mt('Pick one').'</option>
140: '.$list.'
141: </select>')."</form>";
142: return $result;
143: }
144:
145: sub add_grading_button {
146: my $result=' <input type="submit" name="gradeasubmission" value="'.
147: &mt("Get a submission to grade").'" />';
148: $result.='<input type="hidden" name="grade_target" value="webgrade" />';
149: if ( 1) {
150: #need a permissions for limitng this to 'powerful users'
151:
152: my ($entries,$ready,$locks)=&get_queue_counts('gradingqueue');
153: $result.='<p>'.&mt("Grading Queue has [_1] entries. [_2] of them are ready to be graded and [_3] of them are currently being graded",$entries,$ready,$locks);
154:
155: $result.=' <input type="submit" name="reviewagrading" value="'.
156: &mt("Select an entry from the grading queue").'" /> </p>'."\n";
157:
158: ($entries,$ready,$locks)=&get_queue_counts('reviewqueue');
159: $result.='<p>'.&mt("Review Queue has [_1] entries. [_2] of them are ready to be graded and [_3] of them are currently being graded",$entries,$ready,$locks);
160: $result.=' <input type="submit" name="reviewasubmission" value="'.
161: &mt("Select an entry from the review queue").'" /> </p>'."\n";
162: }
163: return $result;
164: }
165:
166: sub add_request_another_attempt_button {
167: my $result;
168: my $symb=&Apache::lonnet::symbread();
169: if ($env{'request.enc'}) { $symb=&Apache::lonenc::encrypted($symb); }
170: $symb=&Apache::lonnet::escape($symb);
171: $result.='<form method="POST" action="/adm/slotrequest">'.
172: '<input type="hidden" name="symb" value="'.$symb.'" />'.
173: '<input type="submit" name="requestattempt" value="'.
174: &mt("Request another attempt").'" />'.
175: '</form>';
176: return $result;
177: }
178:
179: sub preserve_grade_info {
180: my $result;
181: # if we are viewing someone else preserve that info
182: if (defined $env{'form.grade_symb'}) {
183: foreach my $field ('symb','courseid','domain','username') {
184: $result .= '<input type="hidden" name="grade_'.$field.
185: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
186: }
187: }
188: return $result;
189: }
190:
191: sub start_Task {
192: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
193:
194: my ($status,$accessmsg,$slot);
195: if ($target ne 'webgrade') {
196: &Apache::structuretags::initialize_storage();
197: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
198: }
199:
200: $Apache::lonhomework::parsing_a_task=1;
201: #should get back a <html> or the neccesary stuff to start XML/MathML
202: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
203: &Apache::structuretags::page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
204:
205: if ($target eq 'web') {
206: if ($Apache::lonhomework::modifygrades) {
207: $body_tag_start.='<form name="gradesubmission" method="POST" action="';
208: my $uri=$env{'request.uri'};
209: if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
210: $body_tag_start.=$uri.'">'.&add_grading_button()."</form>";
211: }
212: }
213: if ($target eq 'web' || ($target eq 'grade' && !$env{'form.webgrade'}) || $target eq 'answer' ||
214: $target eq 'tex') {
215: my ($version,$previous)=&get_version();
216: ($status,$accessmsg,my $slot_name,$slot) =
217: &Apache::lonhomework::check_task_access('0');
218: push(@Apache::inputtags::status,$status);
219: $Apache::inputtags::slot_name=$slot_name;
220: my $expression='$external::datestatus="'.$status.'";';
221: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.$version.solved"}.'";';
222: &Apache::run::run($expression,$safeeval);
223: &Apache::lonxml::debug("Got $status");
224: $body_tag_start.=&add_previous_version_button($status);
225: if (!$previous && (
226: ( $status eq 'CLOSED' ) ||
227: ( $status eq 'BANNED') ||
228: ( $status eq 'UNAVAILABLE') ||
229: ( $status eq 'NOT_IN_A_SLOT') ||
230: ( $status eq 'NEEDS_CHECKIN') ||
231: ( $status eq 'WAITING_FOR_GRADE') ||
232: ( $status eq 'INVALID_ACCESS') )) {
233: my $bodytext=&Apache::lonxml::get_all_text("/task",$parser);
234: if ( $target eq "web" ) {
235: $result.= $head_tag_start.'</head>'.$body_tag_start;
236: my $msg;
237: if ($status eq 'UNAVAILABLE') {
238: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
239: } elsif ($status eq 'NOT_IN_A_SLOT') {
240: $msg.='<h1>'.&mt('You are not currently signed up to work at this time and/or place.').'</h1>';
241: } elsif ($status eq 'NEEDS_CHECKIN') {
242: $msg.='<h1>'.&mt('You need the Proctor to validate you.').
243: '</h1>'.&proctor_validation_screen($slot);
244: } elsif ($status eq 'WAITING_FOR_GRADE') {
245: $msg.='<h1>'.&mt('Your submission is in the grading queue.').'</h1>';
246: } elsif ($status ne 'NOT_YET_VIEWED') {
247: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
248: }
249: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
250: $msg.='The problem '.$accessmsg;
251: }
252: $result.=$msg.'<br />';
253: } elsif ($target eq 'tex') {
254: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
255: if ($status eq 'UNAVAILABLE') {
256: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
257: } else {
258: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
259: }
260: } elsif ($target eq 'grade' && !$env{'form.webgrade'}) {
261: if ($status eq 'NEEDS_CHECKIN') {
262: if (&proctor_check_auth($slot_name,$slot)) {
263: #FIXME immeadiatly add this to the grading queue
264: # with slot->{'endtime'} for when grading can
265: # begin on this resource
266: # FIXME I think the above is done by default,
267: # need to check that
268: # failure doesn't do this.
269: }
270: }
271: }
272: } elsif ($target eq 'web') {
273: my $name= &Apache::structuretags::get_resource_name($parstack,$safeeval);
274: $result.="$head_tag_start<title>$name</title></head>
275: $body_tag_start \n";
276:
277: my ($version,$previous)=&get_version();
278: if ($Apache::lonhomework::history{"resource.$version.status"} eq 'fail') {
279: $result.='<h1><font color="red">'.&mt('Did not pass').'</font></h1>';
280: if (!$previous) {
281: $result.=&add_request_another_attempt_button();
282: }
283: }
284: if ($Apache::lonhomework::history{"resource.$version.status"} eq 'pass') {
285: $result.='<h1><font color="green">'.&mt('Passed').'</font></h1>';
286: }
287: $result.=$form_tag_start.
288: '<input type="hidden" name="submitted" value="yes" />';
289: $result.=&preserve_grade_info();
290:
291: }
292: } elsif ( ($target eq 'grade' && $env{'form.webgrade'}) ||
293: $target eq 'webgrade') {
294: my $webgrade='yes';
295: if ($target eq 'webgrade') {
296: $result.=$head_tag_start.$body_tag_start;
297: $result.='<br />Review'.&show_queue('reviewqueue');
298: $result.='<br />Grade'.&show_queue('gradingqueue');
299: }
300: # FIXME Blast! still need to reorg this, need to reshow the
301: # queue being reviewed once done with the grade pass...
302: # Hrrm, vaildation pass should perhaps say 'not_locked'
303: # perhaps do a search if there is a key that is mine and if
304: # there isn't reshow the queue....
305: my ($todo,$status_code)=&get_key_todo($target);
306:
307: &Apache::lonnet::logthis("got todo -$todo- stat -$status_code-");
308: if ($todo) {
309: &setup_env_for_other_user($todo,$safeeval);
310: my ($symb,$uname,$udom)=&decode_queue_key($todo);
311: $result.="\n".'<table><tr><td>Found '.
312: &Apache::lonnet::gettitle($symb).' for '.$uname.' at '.$udom.'</td></tr></table>';
313: $form_tag_start.=
314: '<input type="hidden" name="gradingkey" value="'.
315: &Apache::lonnet::escape($todo).'" />';
316: $Apache::bridgetask::queue_key=$todo;
317: &Apache::structuretags::initialize_storage();
318: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
319: if ($target eq 'webgrade') {
320: $result.='<br />After -'.&show_queue($env{'form.queue'});
321: $result.="\n".'<table width="100%" style="width:100%" border="1">';
322: if ($status_code eq 'selected') {
323: $form_tag_start.=
324: '<input type="hidden" name="queuemode" value="selected" />';
325: }
326: }
327: } else {
328: if ($target eq 'webgrade') {
329: $result.="\n";
330: if ($status_code eq 'stop') {
331: $result.='<b>'.&mt("Stopped grading.").'</b>';
332: } elsif ($status_code eq 'lock_failed') {
333: $result.='<b>'.&mt("Failed to lock the request record.").'</b>';
334: } elsif ($status_code eq 'unlock') {
335: $result.='<b>'.&mt("Unlocked the requested record.").'</b>';
336: $result.=&show_queue($env{'form.queue'},1);
337: } elsif ($status_code eq 'show_list') {
338: $result.=&show_queue($env{'form.queue'},1);
339: } else {
340: $result.='<b>'.&mt("No user to be graded.").'</b>';
341: }
342: }
343: $webgrade='no';
344: my $bodytext=&Apache::lonxml::get_all_text("/task",$parser);
345: }
346: if ($target eq 'webgrade' && defined($env{'form.queue'})) {
347: $result.=$form_tag_start;
348: $result.='<input type="hidden" name="webgrade" value="'.
349: $webgrade.'" />';
350: $result.='<input type="hidden" name="queue" value="'.
351: $env{'form.queue'}.'" />';
352: }
353: } else {
354: # page_start returned a starting result, delete it if we don't need it
355: $result = '';
356: }
357: return $result;
358: }
359:
360: sub get_key_todo {
361: my ($target)=@_;
362: my $todo;
363:
364: if (defined($env{'form.reviewasubmission'})) {
365: &Apache::lonnet::logthis("review a submission....");
366: $env{'form.queue'}='reviewqueue';
367: return (undef,'show_list');
368: }
369:
370: if (defined($env{'form.reviewagrading'})) {
371: &Apache::lonxml::debug("review a grading....");
372: $env{'form.queue'}='gradingqueue';
373: return (undef,'show_list');
374: }
375:
376: my $queue=$env{'form.queue'};
377:
378: if (!defined($queue)) {
379: $env{'form.queue'}=$queue='gradingqueue';
380: }
381:
382: my $gradingkey=&Apache::lonnet::unescape($env{'form.gradingkey'});
383:
384: if (defined($env{'form.queue'}) && defined($env{'form.gradingkey'})
385: && !defined($env{'form.gradingaction'})
386: && $env{'form.queuemode'} eq 'selected') {
387:
388: my $who=&queue_key_locked($queue,$gradingkey);
389: my $me=$env{'user.name'}.'@'.$env{'user.domain'};
390: if ($who eq $me) {
391: &Apache::lonxml::debug("Found a key was given to me");
392: return ($gradingkey,'selected');
393: } else {
394: return (undef,'show_list');
395: }
396:
397: }
398:
399: if ($target eq 'webgrade' && $env{'form.queuemode'} eq 'selected') {
400: if ($env{'form.gradingaction'} eq 'resume') {
401: delete($env{'form.gradingaction'});
402: &Apache::lonxml::debug("Resuming a key");
403: return ($gradingkey);
404: } elsif ($env{'form.gradingaction'} eq 'unlock') {
405: &Apache::lonxml::debug("Unlocking a key ".
406: &check_queue_unlock($queue,$gradingkey,1));
407: return (undef,'unlock');
408: } elsif ($env{'form.gradingaction'} eq 'select') {
409: &Apache::lonxml::debug("Locking a key");
410: if (&lock_key($queue,$gradingkey)) {
411: &Apache::lonxml::debug("Success $queue");
412: return ($gradingkey);
413: }
414: &Apache::lonxml::debug("Failed $queue");
415: return (undef,'lock_failed');
416: }
417: }
418:
419: if ($env{'form.queuemode'} ne 'selected') {
420: # don't get something new from the queue if they hit the stop button
421: if (!($env{'form.stop'} && $target eq 'webgrade')
422: && !$env{'form.gradingaction'}) {
423: &Apache::lonxml::debug("Getting anew $queue");
424: return (&get_from_queue($queue));
425: } else {
426: return (undef,'stop');
427: }
428: }
429: return (undef,undef)
430: }
431:
432: sub end_Task {
433: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
434: my $result='';
435: my $status=$Apache::inputtags::status['-1'];
436: my ($version,$previous)=&get_version();
437: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
438: $target eq 'tex') {
439: if (
440: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
441: ($target eq 'answer') || ($target eq 'tex')
442: ) {
443: if ($target eq 'web') {
444: if ($status eq 'CAN_ANSWER' && !$previous) {
445: $result.="\n".'<table border="1">'.
446: &Apache::inputtags::file_selector("$version.0",
447: "bridgetask","*",
448: 'portfolioonly').
449: "</table>";
450: $result.=&Apache::inputtags::gradestatus('0');
451: }
452: }
453: if ($target eq 'web' || $target eq 'webgrade') {
454: $result.=&Apache::lonxml::xmlend().'</html>';
455: }
456: }
457: if ($target eq 'grade' && !$env{'form.webgrade'} && !$previous) {
458: my $award='SUBMITTED';
459: &Apache::essayresponse::file_submission("$version.0",'bridgetask',
460: 'portfiles',\$award);
461: if ($award eq 'SUBMITTED' &&
462: $Apache::lonhomework::results{"resource.$version.0.bridgetask.portfiles"}) {
463: $Apache::lonhomework::results{"resource.0.tries"}=
464: $Apache::lonhomework::results{"resource.$version.0.tries"}=
465: 1+$Apache::lonhomework::history{"resource.$version.0.tries"};
466:
467: $Apache::lonhomework::results{"resource.0.award"}=
468: $Apache::lonhomework::results{"resource.$version.0.award"}=
469: $award;
470: }
471: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
472: &Apache::structuretags::finalize_storage();
473: if ($award eq 'SUBMITTED') {
474: &add_to_queue('gradingqueue',$Apache::inputtags::slot_name);
475: }
476: }
477: if ($target eq 'grade' && $env{'form.webgrade'} eq 'yes') {
478: my $optional_required=
479: &Apache::lonxml::get_param('OptionalRequired',$parstack,
480: $safeeval);
481: my $optional_passed=0;
482: my $mandatory_failed=0;
483: my $ungraded=0;
484: my $review=0;
485: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
486: foreach my $dim_id (@Apache::bridgetask::dimensionlist) {
487: my $status=
488: $Apache::lonhomework::results{"resource.$version.$dim_id.status"};
489: my $mandatory=
490: ($Apache::bridgetask::dimensionmandatory{$dim_id} ne 'N');
491: if ($status eq 'pass') {
492: if (!$mandatory) { $optional_passed++; }
493: } elsif ($status eq 'fail') {
494: if ($mandatory) { $mandatory_failed++; }
495: } elsif ($status eq 'ungraded') {
496: $ungraded++;
497: } elsif ($status eq 'review') {
498: $review++;
499: }
500: }
501: if ($optional_passed < $optional_required) {
502: $mandatory_failed++;
503: }
504: &Apache::lonxml::debug("all dim ".join(':',@Apache::bridgetask::dimensionlist)."results -> m_f $mandatory_failed o_p $optional_passed u $ungraded r $review");
505: $Apache::lonhomework::results{'resource.grader'}=
506: $env{'user.name'}.'@'.$env{'user.domain'};
507: if ($review) {
508: $Apache::lonhomework::results{"resource.$version.status"}='review';
509: if ($env{'form.queue'} eq 'reviewqueue') {
510: &check_queue_unlock($env{'form.queue'});
511: &Apache::lonxml::debug(" still needs review not changing status.");
512: } else {
513: &move_between_queues('gradingqueue','reviewqueue');
514: }
515: } elsif ($ungraded) {
516: $Apache::lonhomework::results{"resource.$version.status"}='ungraded';
517: # FIXME if in review queue need to move back to grading queue
518: if ($env{'form.queue'} eq 'reviewqueue') {
519: &Apache::lonxml::debug("moving back.");
520: &move_between_queues('reviewqueue','gradingqueue');
521: } else {
522: &check_queue_unlock($env{'form.queue'});
523: }
524: } elsif ($mandatory_failed) {
525: $Apache::lonhomework::results{"resource.$version.status"}='fail';
526: $Apache::lonhomework::results{"resource.$version.0.solved"}='incorrect_by_override';
527: $Apache::lonhomework::results{"resource.$version.0.award"}='INCORRECT';
528: $Apache::lonhomework::results{"resource.$version.0.awarded"}='0';
529: &remove_from_queue($env{'form.queue'});
530: } else {
531: $Apache::lonhomework::results{"resource.$version.status"}='pass';
532: $Apache::lonhomework::results{"resource.$version.0.solved"}='correct_by_override';
533: $Apache::lonhomework::results{"resource.$version.0.award"}='EXACT_ANS';
534: $Apache::lonhomework::results{"resource.$version.0.awarded"}='1';
535: &remove_from_queue($env{'form.queue'});
536: }
537: $Apache::lonhomework::results{"resource.status"}=
538: $Apache::lonhomework::results{"resource.$version.status"};
539: if (defined($Apache::lonhomework::results{"resource.$version.0.awarded"})) {
540: $Apache::lonhomework::results{"resource.0.award"}=
541: $Apache::lonhomework::results{"resource.$version.award"};
542: $Apache::lonhomework::results{"resource.0.awarded"}=
543: $Apache::lonhomework::results{"resource.$version.awarded"};
544: $Apache::lonhomework::results{"resource.0.solved"}=
545: $Apache::lonhomework::results{"resource.$version.solved"};
546: }
547: &Apache::structuretags::finalize_storage();
548: }
549: } elsif ($target eq 'webgrade') {
550: $result.="</table>\n<hr />";
551: #$result.='<input type="submit" name="next" value="'.
552: # &mt('Save & Next').'" /> ';
553: #$result.='<input type="submit" name="end" value="'.
554: # &mt('Save & Stop Grading').'" /> ';
555: #$result.='<input type="submit" name="throwaway" value="'.
556: # &mt('Throw Away & Stop Grading').'" /> ';
557: #$result.='<input type="submit" name="save" value="'.
558: # &mt('Save Partial Grade and Continue Grading').'" /> ';
559: $result.='</form>'.&Apache::loncommon::endbodytag().'</html>';
560: } elsif ($target eq 'meta') {
561: $result.='<parameter part="0" package="Task"></parameter>'."\n";
562: #$result.=&Apache::response::meta_part_order();
563: #$result.=&Apache::response::meta_response_order();
564: }
565: undef($Apache::lonhomework::parsing_a_task);
566: return $result;
567: }
568:
569: sub move_between_queues {
570: my ($src_queue,$dest_queue)=@_;
571: my $cur_data=&get_queue_data($src_queue);
572: if (!$cur_data) { return 'not_exist'; }
573: my $result=&add_to_queue($dest_queue,$cur_data->[0]);
574: if ($result ne 'ok') {
575: return $result;
576: }
577: &check_queue_unlock($src_queue);
578: return &remove_from_queue($src_queue);
579: }
580:
581: sub check_queue_unlock {
582: my ($queue,$key,$allow_not_me)=@_;
583: my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
584: if (!defined($key)) {
585: $key="$symb\0queue\0$uname\@$udom";
586: }
587: my $cnum=$env{'course.'.$cid.'.num'};
588: my $cdom=$env{'course.'.$cid.'.domain'};
589: my $me=$env{'user.name'}.'@'.$env{'user.domain'};
590: my $who=&queue_key_locked($queue,$key,$cdom,$cnum);
591: if ($who eq $me) {
592: return &Apache::lonnet::del($queue,["$key\0locked"],$cdom,$cnum);
593: } elsif ($allow_not_me) {
594: &Apache::lonxml::debug("unlocking $who by $me");
595: return &Apache::lonnet::del($queue,["$key\0locked"],$cdom,$cnum);
596: }
597: return 'not_owner';
598: }
599:
600: sub remove_from_queue {
601: my ($queue)=@_;
602: my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
603: my $cnum=$env{'course.'.$cid.'.num'};
604: my $cdom=$env{'course.'.$cid.'.domain'};
605: my $key="$symb\0queue\0$uname\@$udom";
606: my @keys=($key,"$key\0locked");
607: return &Apache::lonnet::del($queue,\@keys,$cdom,$cnum);
608: }
609:
610: sub setup_env_for_other_user {
611: my ($queue_key,$safeeval)=@_;
612: my ($symb,$uname,$udom)=&decode_queue_key($queue_key);
613: &Apache::lonxml::debug("setup_env for $queue_key");
614: $env{'form.grade_symb'}=$symb;
615: $env{'form.grade_domain'}=$udom;
616: $env{'form.grade_username'}=$uname;
617: $env{'form.grade_courseid'}=$env{'request.course.id'};
618: &Apache::lonxml::initialize_rndseed($safeeval);
619: }
620:
621: sub get_queue_data {
622: my ($queue)=@_;
623: my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
624: my $cnum=$env{'course.'.$cid.'.num'};
625: my $cdom=$env{'course.'.$cid.'.domain'};
626: my $todo="$symb\0queue\0$uname\@$udom";
627: my ($key,$value)=&Apache::lonnet::get($queue,[$todo],$cdom,$cnum);
628: if ($key eq $todo && ref($value)) {
629: return $value;
630: }
631: return undef;
632: }
633:
634: sub add_to_queue {
635: my ($queue,$slot_name)=@_;
636: my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
637: my $cnum=$env{'course.'.$cid.'.num'};
638: my $cdom=$env{'course.'.$cid.'.domain'};
639: my %data;
640: $data{"$symb\0queue\0$uname\@$udom"}=[$slot_name];
641: return &Apache::lonnet::put($queue,\%data,$cdom,$cnum);
642: }
643:
644: sub show_queue {
645: my ($queue,$with_selects)=@_;
646: my $result;
647: my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
648: my $cnum=$env{'course.'.$cid.'.num'};
649: my $cdom=$env{'course.'.$cid.'.domain'};
650: my $regexp="^$symb\0";
651: my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
652: my ($tmp)=%queue;
653: if ($tmp=~/^error: 2 /) {
654: return "\n<h3>Current Queue - $queue</h3><table border='1'><tr><td>Empty</td></tr></table>";
655: }
656: $result.="\n<h3>Current Queue - $queue </h3><table border='1'><tr>";
657: if ($with_selects) { $result.="<th></th>"; }
658: $result.="<th>resource</th><th>user</th><th>type</th><th>data</th></tr>";
659: foreach my $key (sort(keys(%queue))) {
660: if ($key=~/locked$/ && !$with_selects) {
661: my ($symb,$uname,$udom) = &decode_queue_key($key);
662: my $title=&Apache::lonnet::gettitle($symb);
663: $result.="<tr><td>$title</td><td>$uname</td>";
664: $result.='<td>lock</td><td>'.$queue{$key}.'</td></tr>';
665: } elsif ($key=~/timestamp$/ && !$with_selects) {
666: my ($symb,undef) = split("\0",$key);
667: my $title=&Apache::lonnet::gettitle($symb);
668: $result.="<tr><td>$title</td><td></td>";
669: $result.='<td>last queue modification time</td><td>'.
670: &Apache::lonlocal::locallocaltime($queue{$key})."</td></tr>";
671: } elsif ($key!~/(timestamp|locked)$/) {
672: my ($symb,$uname,$udom) = &decode_queue_key($key);
673: my $title=&Apache::lonnet::gettitle($symb);
674: $result.="<tr>";
675: my $slot=$queue{$key}->[0];
676: my %slot_data=&Apache::lonnet::get_slot($slot);
677: if ($with_selects) {
678: my $ekey=&Apache::lonnet::escape($key);
679: my ($action,$description)=('select',&mt('Select'));
680: if (exists($queue{"$key\0locked"})) {
681: my $me=$env{'user.name'}.'@'.$env{'user.domain'};
682: if ($me eq $queue{"$key\0locked"}) {
683: ($action,$description)=('resume',&mt('Resume'));
684: } else {
685: ($action,$description)=('unlock',&mt('Unlock'));
686: }
687: }
688: if (time > $slot_data{'endtime'}) {
689: $result.=(<<FORM);
690: <td>
691: <form method="POST">
692: <input type="hidden" name="gradingkey" value="$ekey" />
693: <input type="hidden" name="queue" value="$queue" />
694: <input type="hidden" name="gradingaction" value="$action" />
695: <input type="hidden" name="webgrade" value="no" />
696: <input type="hidden" name="queuemode" value="selected" />
697: <input type="submit" name="submit" value="$description" />
698: </form>
699: </td>
700: FORM
701:
702: } else {
703: $result.='<td>'.&mt("In Progress").'</td>'
704: }
705: }
706: $result.="<td>$title</td><td>$uname</td>";
707: $result.='<td>queue entry</td><td>Slot: '.$slot.' End time: '.
708: &Apache::lonlocal::locallocaltime($slot_data{'endtime'}).
709: "</td></tr>";
710: }
711: }
712: $result.="</table><hr />\n";
713: return $result;
714: }
715:
716: sub get_queue_counts {
717: my ($queue)=@_;
718: my $result;
719: my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
720: my $cnum=$env{'course.'.$cid.'.num'};
721: my $cdom=$env{'course.'.$cid.'.domain'};
722: my $regexp="^$symb\0";
723: my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
724: my ($tmp)=%queue;
725: if ($tmp=~/^error: 2 /) {
726: return (0,0,0);
727: }
728: my ($entries,$ready_to_grade,$locks)=(0,0,0);
729: foreach my $key (sort(keys(%queue))) {
730: if ($key=~/locked$/) {
731: $locks++;
732: } elsif ($key=~/timestamp$/) {
733: #ignore
734: } elsif ($key!~/(timestamp|locked)$/) {
735: my ($symb,$uname,$udom) = &decode_queue_key($key);
736: $entries++;
737: my $slot=$queue{$key}->[0];
738: my %slot_data=&Apache::lonnet::get_slot($slot);
739: if (time > $slot_data{'endtime'}) {
740: $ready_to_grade++;
741: }
742: }
743: }
744: return ($entries,$ready_to_grade,$locks);
745: }
746:
747: sub decode_queue_key {
748: my ($key)=@_;
749: my ($symb,undef,$user) = split("\0",$key);
750: my ($uname,$udom) = split('@',$user);
751: return ($symb,$uname,$udom);
752: }
753:
754: sub queue_key_locked {
755: my ($queue,$key,$cdom,$cnum)=@_;
756: if (!defined($cdom) || !defined($cnum)) {
757: my (undef,$cid)=&Apache::lonxml::whichuser();
758: $cnum=$env{'course.'.$cid.'.num'};
759: $cdom=$env{'course.'.$cid.'.domain'};
760: }
761: my ($key_locked,$value)=
762: &Apache::lonnet::get($queue,["$key\0locked"],$cdom,$cnum);
763: if ($key_locked eq "$key\0locked") {
764: return $value;
765: }
766: return undef;
767: }
768:
769: sub pick_from_queue_data {
770: my ($queue,$check_section,$queuedata,$cdom,$cnum)=@_;
771: foreach my $key (keys(%$queuedata)) {
772: my ($symb,$uname,$udom)=&decode_queue_key($key);
773: if ($check_section) {
774: my $section=&Apache::lonnet::getsection($uname,$udom);
775: if ($section eq $check_section) {
776: &Apache::lonxml::debug("my sec");
777: next;
778: }
779: }
780: my $slot=$queuedata->{$key}[0];
781: my %slot_data=&Apache::lonnet::get_slot($slot);
782: if ($slot_data{'endtime'} > time) {
783: &Apache::lonxml::debug("not time");
784: next;
785: }
786: if (&queue_key_locked($queue,$key,$cdom,$cnum)) {
787: &Apache::lonxml::debug("someone already has um.");
788: next;
789: }
790: return $key;
791: }
792: return undef;
793: }
794:
795: sub find_mid_grade {
796: my ($queue,$symb,$cdom,$cnum)=@_;
797: my $todo=&Apache::lonnet::unescape($env{'form.gradingkey'});
798: my $me=$env{'user.name'}.'@'.$env{'user.domain'};
799: if ($todo) {
800: my $who=&queue_key_locked($queue,$todo,$cdom,$cnum);
801: if ($who eq $me) { return $todo; }
802: }
803: my $regexp="^$symb\0.*\0locked\$";
804: my %locks=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
805: foreach my $key (keys(%locks)) {
806: my $who=$locks{$key};
807: if ($who eq $me) {
808: $todo=$key;
809: $todo=~s/\0locked$//;
810: return $todo;
811: }
812: }
813: return undef;
814: }
815:
816: sub lock_key {
817: my ($queue,$todo)=@_;
818: my $me=$env{'user.name'}.'@'.$env{'user.domain'};
819: my (undef,$cid)=&Apache::lonxml::whichuser();
820: my $cnum=$env{'course.'.$cid.'.num'};
821: my $cdom=$env{'course.'.$cid.'.domain'};
822: my $success=&Apache::lonnet::newput($queue,{"$todo\0locked"=> $me},
823: $cdom,$cnum);
824: &Apache::lonxml::debug("success $success $todo");
825: if ($success eq 'ok') {
826: return 1;
827: }
828: return 0;
829: }
830:
831: sub get_from_queue {
832: my ($queue)=@_;
833: my $result;
834: my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
835: my $cnum=$env{'course.'.$cid.'.num'};
836: my $cdom=$env{'course.'.$cid.'.domain'};
837: my $todo=&find_mid_grade($queue,$symb,$cdom,$cnum);
838: &Apache::lonxml::debug("found ".join(':',&decode_queue_key($todo)));
839: if ($todo) { return $todo; }
840: while (1) {
841: my $starttime=time;
842: &Apache::lonnet::put($queue,{"$symb\0timestamp"=>$starttime},
843: $cdom,$cnum);
844: &Apache::lonxml::debug("$starttime");
845: my $regexp="^$symb\0queue\0";
846: my %queue=&Apache::lonnet::dump($queue,$cdom,$cnum,$regexp);
847: #make a pass looking for a user _not_ in my section
848: if ($env{'request.course.sec'}) {
849: &Apache::lonxml::debug("sce");
850: $todo=&pick_from_queue_data($queue,$env{'request.course.sec'},
851: \%queue,$cdom,$cnum);
852: &Apache::lonxml::debug("sce $todo");
853: }
854: # no one _not_ in our section so look for any user that is
855: # ready for grading
856: if (!$todo) {
857: &Apache::lonxml::debug("no sce");
858: $todo=&pick_from_queue_data($queue,$env{'request.course.sec'},
859: \%queue,$cdom,$cnum);
860: &Apache::lonxml::debug("no sce $todo");
861: }
862: # no user to grade
863: if (!$todo) { last; }
864: &Apache::lonxml::debug("got $todo");
865: # otherwise found someone so lets try to lock them
866: # unless someone else already picked them
867: if (!&lock_key($queue,$todo)) { next; }
868: my (undef,$endtime)=
869: &Apache::lonnet::get($queue,["$symb\0timestamp"],
870: $cdom,$cnum);
871: &Apache::lonxml::debug("emd $endtime");
872: # someone else already modified the queue,
873: # perhaps our picked user wass already fully graded between
874: # when we picked him and when we locked his record? so lets
875: # double check.
876: if ($endtime != $starttime) {
877: my ($key,$value)=
878: &Apache::lonnet::get($queue,["$todo"],
879: $cdom,$cnum);
880: &Apache::lonxml::debug("check $key .. $value");
881: if ($key eq $todo && ref($value)) {
882: } else {
883: &Apache::lonnet::del($queue,["$todo\0locked"],
884: $cdom,$cnum);
885: &Apache::lonxml::debug("del");
886: next;
887: }
888: }
889: &Apache::lonxml::debug("last $todo");
890: last;
891: }
892: return $todo;
893: }
894:
895: sub start_ClosingParagraph {
896: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
897: my $result;
898: if ($target eq 'web') {
899: } elsif ($target eq 'webgrade') {
900: &Apache::lonxml::startredirection();
901: }
902: return $result;
903: }
904:
905: sub end_ClosingParagraph {
906: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
907: my $result;
908: if ($target eq 'web') {
909: } elsif ($target eq 'webgrade') {
910: &Apache::lonxml::endredirection();
911: }
912: return $result;
913: }
914:
915: sub get_id {
916: my ($parstack,$safeeval)=@_;
917: my $id=&Apache::lonxml::get_param('id',$parstack,$safeeval);
918: if (!$id) { $id=$Apache::lonxml::curdepth; }
919: return $id;
920: }
921:
922: my %dimension;
923: sub start_Dimension {
924: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
925: undef(%dimension);
926: my $dim_id=&get_id($parstack,$safeeval);
927: $Apache::bridgetask::dimension=$dim_id;
928: push(@Apache::bridgetask::dimensionlist,$dim_id);
929: undef(@Apache::bridgetask::instance);
930: $Apache::bridgetask::dimensionmandatory{$dim_id}=
931: &Apache::lonxml::get_param('Mandatory',$parstack,$safeeval);
932: return '';
933: }
934:
935: sub get_instance {
936: &Apache::response::pushrandomnumber();
937: my @order=&Math::Random::random_permutation(@{$dimension{'instances'}});
938: my $num=@order;
939: my $version=&get_version();
940: my $which=($version-1)%$num;
941: return $order[$which];
942: }
943:
944: {
945: my $last_link;
946: sub end_Dimension {
947: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
948: my $result;
949: my $dim=&get_id($parstack,$safeeval);
950: my $instance=&get_instance();
951: my $version=&get_version();
952: if ($target eq 'web') {
953: $result=$dimension{'intro'}.$dimension{$instance.'.text'};
954: if ($Apache::lonhomework::history{"resource.$version.status"} eq 'pass' ||
955: $Apache::lonhomework::history{"resource.$version.status"} eq 'fail') {
956: foreach my $id (@{$dimension{$instance.'.criterias'}}) {
957: my $status=$Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.status"};
958: my $comment=$Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.comment"};
959: $result.='<table border="1"><tr><td>';
960: if ($status eq 'fail') {
961: $result.='<font color="red">'.&mt('Did not pass').'</font>';
962: } elsif ($status eq 'pass') {
963: $result.='<font color="green">'.&mt('Passed').'</font>';
964: } else {
965: &Apache::lonxml::error("Student viewing a graded bridgetask was show a status of $status");
966: }
967: $result.='</td></tr><tr><td>';
968: if ($Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.comment"}) {
969: $result.=&mt('Comment from grader: ').$Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.comment"}.'</td></tr><tr><td>';
970: }
971: $result.=$dimension{$instance.'.criteria.'.$id}.
972: '</td></tr></table>';
973: }
974: }
975: } elsif ($target eq 'webgrade') {
976: foreach my $id (@{$dimension{$instance.'.criterias'}}) {
977: my $link='criteria_'.$instance.'_'.$id;
978: my $status=$Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.status"};
979: $result.='<tr><td width="100%" valign="top">'.
980: '<a name="'.$link.'" />'.
981: '<a name="next_'.$last_link.'" />'.
982: '<br /><textarea enabled="false" style="width:100%" rows="8" width="25" wrap="hard">'.$dimension{$instance.'.criteria.'.$id}.'</textarea>'.
983: #$dimension{$instance.'.criteria.'.$id}.
984: '</td>'.
985: '<td><nobr>Additional Comment for Student</nobr> <br />'.
986: '<textarea style="width:100%" rows="8" width="25" wrap="hard" name="HWVAL_comment_'.$link.'">'.&HTML::Entities::encode($Apache::lonhomework::history{"resource.$version.$dim.$instance.$id.comment"}).'</textarea>'.
987: '</td>'.
988: '<td>'.
989: '<nobr><label><input type="radio" name="HWVAL_'.$link.'" value="ungraded" '.($status eq 'ungraded' || !$status ? 'checked="checked"':'').'/>'.&mt('Ungraded').'</label></nobr><br />'.
990: '<label><input type="radio" name="HWVAL_'.$link.'" value="pass" '.($status eq 'pass' ? 'checked="checked"':'').' />'.&mt('Pass').'</label><br />'.
991: '<label><input type="radio" name="HWVAL_'.$link.'" value="fail" '.($status eq 'fail' ? 'checked="checked"':'').' />'.&mt('Fail').'</label><br />'.
992: '<label><input type="radio" name="HWVAL_'.$link.'" value="review" '.($status eq 'review' ? 'checked="checked"':'').' />'.&mt('Review').'</label><br />'.
993: '</td>'.
994: '<td>'.
995: '<a href="#'.$last_link.'">Prev</a><br />'.
996: '<a href="#next_'.$link.'">Next</a><br /><br /><br />'.
997: '<input type="submit" name="next" value="'.
998: &mt('Done').'" /> '.
999: '<input type="submit" name="stop" value="'.
1000: &mt('Stop').'" /> '.
1001: '</td></tr>';
1002: $result.='<tr><td colspan="4">';
1003: my (undef,undef,$udom,$uname) = &Apache::lonxml::whichuser();
1004: my $file_url = '/uploaded/'.$udom.'/'.$uname.'/portfolio';
1005: foreach my $partial_file (split(',',$Apache::lonhomework::history{"resource.$version.bridgetask.portfiles"})) {
1006: my $file=$file_url.$partial_file;
1007: &Apache::lonnet::allowuploaded('/adm/bridgetask',$file);
1008: $result.='<a href="'.$file.'" target="lonGRDs"><img src="'.
1009: &Apache::loncommon::icon($file).'" border=0"> '.$file.
1010: '</a>';
1011: }
1012: $result.='</td></tr>';
1013: $last_link=$link;
1014: }
1015: } elsif ($target eq 'grade' && $env{'form.webgrade'}) {
1016: my $optional_passed=0;
1017: my $mandatory_failed=0;
1018: my $ungraded=0;
1019: my $review=0;
1020: foreach my $id (@{$dimension{$instance.'.criterias'}}) {
1021: my $status=$Apache::lonhomework::results{"resource.$version.$dim.$instance.$id.status"}=$env{'form.HWVAL_criteria_'.$instance.'_'.$id};
1022: $Apache::lonhomework::results{"resource.$version.$dim.$instance.$id.comment"}=$env{'form.HWVAL_comment_criteria_'.$instance.'_'.$id};
1023: my $mandatory=($dimension{$instance.'.criteria.'.$id.'.mandatory'} ne 'N');
1024: if ($status eq 'pass') {
1025: if (!$mandatory) { $optional_passed++; }
1026: } elsif ($status eq 'fail') {
1027: if ($mandatory) { $mandatory_failed++; }
1028: } elsif ($status eq 'review') {
1029: $review++;
1030: } elsif ($status eq 'ungraded') {
1031: $ungraded++;
1032: } else {
1033: &Apache::lonxml::error("got weird status --$status--");
1034: }
1035: }
1036: if ($optional_passed < $dimension{$instance.'.optionalrequired'}) {
1037: $mandatory_failed++;
1038: }
1039: &Apache::lonxml::debug("all instance ".join(':',@{$dimension{$instance.'.criterias'}})." results -> m_f $mandatory_failed o_p $optional_passed u $ungraded r $review");
1040: if ($review) {
1041: $Apache::lonhomework::results{"resource.$version.$dim.status"}=
1042: 'review';
1043: } elsif ($ungraded) {
1044: $Apache::lonhomework::results{"resource.$version.$dim.status"}=
1045: 'ungraded';
1046: } elsif ($mandatory_failed) {
1047: $Apache::lonhomework::results{"resource.$version.$dim.status"}=
1048: 'fail';
1049: } else {
1050: $Apache::lonhomework::results{"resource.$version.$dim.status"}=
1051: 'pass';
1052: }
1053: }
1054: return $result;
1055: }
1056: }
1057:
1058: sub start_IntroParagraph {
1059: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1060: my $result;
1061: if ($target eq 'web' || $target eq 'webgrade') {
1062: if ($tagstack->[-2] eq 'Dimension' || $target eq 'webgrade') {
1063: &Apache::lonxml::startredirection();
1064: }
1065: }
1066: return $result;
1067: }
1068:
1069: sub end_IntroParagraph {
1070: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1071: my $result;
1072: if ($target eq 'web' || $target eq 'webgrade') {
1073: if ($tagstack->[-2] eq 'Dimension' || $target eq 'webgrade') {
1074: $dimension{'intro'}=&Apache::lonxml::endredirection();
1075: }
1076: }
1077: return $result;
1078: }
1079:
1080: sub start_Instance {
1081: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1082: my $id=&get_id($parstack,$safeeval);
1083: push(@{$dimension{'instances'}},$id);
1084: push(@Apache::bridgetask::instance,$id);
1085: push(@Apache::bridgetask::instancelist,$id);
1086: $dimension{$id.'.optionalrequired'}=
1087: &Apache::lonxml::get_param('OptionalRequired',$parstack,$safeeval);
1088: return '';
1089: }
1090:
1091: sub end_Instance {
1092: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1093: return '';
1094: }
1095:
1096: sub start_InstanceText {
1097: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1098: if ($target eq 'web' || $target eq 'webgrade') {
1099: &Apache::lonxml::startredirection();
1100: }
1101: return '';
1102: }
1103:
1104: sub end_InstanceText {
1105: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1106: my $instance_id=$Apache::bridgetask::instance[-1];
1107: if ($target eq 'web' || $target eq 'webgrade') {
1108: $dimension{$instance_id.'.text'}=&Apache::lonxml::endredirection();
1109: }
1110: return '';
1111: }
1112:
1113: sub start_Criteria {
1114: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1115: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'grade') {
1116: &Apache::lonxml::startredirection();
1117: }
1118: return '';
1119: }
1120:
1121: sub end_Criteria {
1122: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1123: my $instance_id=$Apache::bridgetask::instance[-1];
1124: if ($target eq 'web' || $target eq 'webgrade' || $target eq 'grade') {
1125: my $criteria=&Apache::lonxml::endredirection();
1126: my $id=&get_id($parstack,$safeeval);
1127: $dimension{$instance_id.'.criteria.'.$id}=$criteria;
1128: $dimension{$instance_id.'.criteria.'.$id.'.mandatory'}=
1129: &Apache::lonxml::get_param('Mandatory',$parstack,$safeeval);
1130: push(@{$dimension{$instance_id.'.criterias'}},$id);
1131: }
1132: return '';
1133: }
1134:
1135: sub proctor_validation_screen {
1136: my ($slot) = @_;
1137: my (undef,undef,$domain,$user) = &Apache::lonxml::whichuser();
1138: my $url=&Apache::lonnet::studentphoto($domain,$user,'jpg');
1139: $user=$env{'form.proctorname'};
1140: if ($env{'form.proctordomain'}) { $domain=$env{'form.proctordomain'}; }
1141: my $msg;
1142: if ($env{'form.proctorpassword'}) {
1143: $msg='<p><font color="red">'.&mt("Failed to authenticate the proctor.")
1144: .'</font></p>';
1145: }
1146: my $result= (<<ENDCHECKOUT);
1147: <h2>Proctor Validation</h2>
1148: <p>Your room's proctor needs to validate your access to this resource.</p>
1149: $msg
1150: <form name="checkout" method="POST" action="$env{'request.uri'}">
1151: <input type="hidden" name="validate" value="yes" />
1152: <input type="hidden" name="submitted" value="yes" />
1153: <table>
1154: <tr><td>Proctor's Username:</td><td><input type="string" name="proctorname" value="$user" /></td></tr>
1155: <tr><td>Password:</td><td><input type="password" name="proctorpassword" value="" /></td></tr>
1156: <tr><td>Proctor's Domain:</td><td><input type="string" name="proctordomain" value="$domain" /></td></tr>
1157: </table>
1158: <input type="submit" name="checkoutbutton" value="Validate" /><br />
1159: Student who should be logged in is:<br />
1160: <img src="$url" /><br />
1161: </form>
1162: ENDCHECKOUT
1163: return $result;
1164: }
1165:
1166: 1;
1167: __END__
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