Annotation of loncom/homework/bridgetask.pm, revision 1.16
1.1 albertel 1: # The LearningOnline Network with CAPA
2: # definition of tags that give a structure to a document
3: #
1.16 ! albertel 4: # $Id: bridgetask.pm,v 1.15 2005/05/03 05:31:51 albertel Exp $
1.1 albertel 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 );
1.9 albertel 40:
1.1 albertel 41: BEGIN {
42: &Apache::lonxml::register('Apache::bridgetask',('Task','IntroParagraph','Dimension','Instance','InstanceText','Criteria','ClosingParagraph'));
43: }
44:
1.9 albertel 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: # list of all current Instance ids
52: @Apache::bridgetask::instance=();
53: # list of all Instance ids seen in this problem
54: @Apache::bridgetask::instancelist=();
1.15 albertel 55: # key of queud user data that we are currently grading
56: $Apache::bridgetask::queue_key='';
1.9 albertel 57: }
58:
1.4 albertel 59: sub proctor_check_auth {
60: my ($slot)=@_;
1.11 albertel 61: my $user=$env{'form.proctorname'};
62: my $domain=$env{'form.proctordomain'};
1.4 albertel 63:
64: my @allowed=split(",",$slot->{'proctor'});
65: foreach my $possible (@allowed) {
66: my ($puser,$pdom)=(split('@',$possible));
67: if ($puser eq $user && $pdom eq $domain) {
1.11 albertel 68: my $authhost=&Apache::lonnet::authenticate($puser,$env{'form.proctorpassword'},$pdom);
1.4 albertel 69: if ($authhost ne 'no_host') {
70: $Apache::lonhomework::results{'resource.checkedin'}=
71: $user.'@'.$domain;
72: return 1;
73: }
74: }
75: }
76: return 0;
77: }
78:
1.8 albertel 79: sub add_previous_version_button {
80: my $result;
1.9 albertel 81: $result.=&mt(' Show a previously done version: [_1]','<select name="previousversion">
1.8 albertel 82: <option>Pick one</option>
1.9 albertel 83: </select>');
1.8 albertel 84: return $result;
85: }
86:
1.13 albertel 87: sub add_grading_button {
88: my $result;
89: $result.=' <input type="submit" name="gradeasubmission" value="'.
90: &mt("Get a submission to grade").'" />';
91: $result.='<input type="hidden" name="grade_target" value="webgrade" />';
92: return $result;
93: }
94:
1.1 albertel 95: sub start_Task {
96: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
97:
1.4 albertel 98: my ($status,$accessmsg,$slot);
1.16 ! albertel 99: if ($target ne 'webgrade') {
! 100: &Apache::structuretags::initialize_storage();
! 101: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
! 102: }
! 103:
1.4 albertel 104: $Apache::lonhomework::parsing_a_task=1;
1.1 albertel 105: #should get back a <html> or the neccesary stuff to start XML/MathML
106: my ($result,$head_tag_start,$body_tag_start,$form_tag_start)=
107: &Apache::structuretags::page_start($target,$token,$tagstack,$parstack,$parser,$safeeval);
1.16 ! albertel 108:
1.8 albertel 109: if ($target eq 'web') {
110: $body_tag_start.=&add_previous_version_button();
1.13 albertel 111: if ($Apache::lonhomework::modifygrades) {
112: $body_tag_start.='<form name="gradesubmission" method="POST" action="';
113: my $uri=$env{'request.uri'};
114: if ($env{'request.enc'}) { $uri=&Apache::lonenc::encrypted($uri); }
115: $body_tag_start.=$uri.'">'.&add_grading_button()."</form>";
116: }
1.8 albertel 117: }
1.1 albertel 118: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
119: $target eq 'tex') {
1.14 albertel 120: ($status,$accessmsg,my $slot_name,$slot) =
1.4 albertel 121: &Apache::lonhomework::check_task_access('0');
1.9 albertel 122: push(@Apache::inputtags::status,$status);
1.14 albertel 123: $Apache::inputtags::slot_name=$slot_name;
1.1 albertel 124: my $expression='$external::datestatus="'.$status.'";';
125: $expression.='$external::gradestatus="'.$Apache::lonhomework::history{"resource.0.solved"}.'";';
126: &Apache::run::run($expression,$safeeval);
127: &Apache::lonxml::debug("Got $status");
128: if (( $status eq 'CLOSED' ) ||
129: ( $status eq 'BANNED') ||
130: ( $status eq 'UNAVAILABLE') ||
1.3 albertel 131: ( $status eq 'NOT_IN_A_SLOT') ||
1.4 albertel 132: ( $status eq 'NEEDS_CHECKIN') ||
1.1 albertel 133: ( $status eq 'INVALID_ACCESS')) {
134: my $bodytext=&Apache::lonxml::get_all_text("/task",$parser);
135: if ( $target eq "web" ) {
1.4 albertel 136: $result.= $head_tag_start.'</head>'.$body_tag_start;
137: my $msg;
1.1 albertel 138: if ($status eq 'UNAVAILABLE') {
139: $msg.='<h1>'.&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'</h1>';
1.3 albertel 140: } elsif ($status eq 'NOT_IN_A_SLOT') {
141: $msg.='<h1>'.&mt('You are not currently signed up to work at this time and/or place.').'</h1>';
1.4 albertel 142: } elsif ($status eq 'NEEDS_CHECKIN') {
143: $msg.='<h1>'.&mt('You need the Proctor to validate you.').
144: '</h1>'.&proctor_validation_screen($slot);
1.1 albertel 145: } elsif ($status ne 'NOT_YET_VIEWED') {
146: $msg.='<h1>'.&mt('Not open to be viewed').'</h1>';
147: }
148: if ($status eq 'CLOSED' || $status eq 'INVALID_ACCESS') {
149: $msg.='The problem '.$accessmsg;
150: }
151: $result.=$msg.'<br />';
152: } elsif ($target eq 'tex') {
153: $result.='\begin{document}\noindent \vskip 1 mm \begin{minipage}{\textwidth}\vskip 0 mm';
154: if ($status eq 'UNAVAILABLE') {
155: $result.=&mt('Unable to determine if this resource is open due to network problems. Please try again later.').'\vskip 0 mm ';
156: } else {
157: $result.=&mt('Problem is not open to be viewed. It')." $accessmsg \\vskip 0 mm ";
158: }
1.4 albertel 159: } elsif ($target eq 'grade') {
160: if ($status eq 'NEEDS_CHECKIN') {
161: if (&proctor_check_auth($slot)) {
162: #FIXME immeadiatly add this to the grading queue
163: # with slot->{'endtime'} for when grading can
164: # begin on this resource
165: }
166: }
1.1 albertel 167: }
168: } elsif ($target eq 'web') {
169: my $name= &Apache::structuretags::get_resource_name($parstack,$safeeval);
170: $result.="$head_tag_start<title>$name</title></head>
171: $body_tag_start \n $form_tag_start".
172: '<input type="hidden" name="submitted" value="yes" />';
173: # if we are viewing someone else preserve that info
1.11 albertel 174: if (defined $env{'form.grade_symb'}) {
1.1 albertel 175: foreach my $field ('symb','courseid','domain','username') {
176: $result .= '<input type="hidden" name="grade_'.$field.
1.11 albertel 177: '" value="'.$env{"form.grade_$field"}.'" />'."\n";
1.1 albertel 178: }
179: }
180: }
1.13 albertel 181: } elsif ($target eq 'webgrade') {
1.15 albertel 182: $result.=$head_tag_start.$body_tag_start.$form_tag_start;
1.16 ! albertel 183: $result.=
! 184: '<input type="hidden" name="grade_target" value="webgrade" />';
1.14 albertel 185: $result.=&show_queue();
1.15 albertel 186: my $todo=&get_from_queue();
187: if ($todo) {
1.16 ! albertel 188: &setup_env_for_other_user($todo,$safeeval);
1.15 albertel 189: my ($symb,$uname,$udom)=&decode_queue_key($todo);
1.16 ! albertel 190: $result.="\n".'<table><tr><td>Found '.
! 191: &Apache::lonnet::gettitle($symb).' for '.$uname.' at '.$udom.'</td></tr></table>';
1.15 albertel 192: $result.='<input type="hidden" name="gradingkey" value="'.
1.16 ! albertel 193: &Apache::lonnet::escape($todo).'" />';
1.15 albertel 194: $Apache::bridgetask::queue_key=$todo;
1.16 ! albertel 195: &Apache::structuretags::initialize_storage();
! 196: &Apache::lonhomework::showhash(%Apache::lonhomework::history);
1.15 albertel 197: } else {
198: $result.="\n".
199: '<table><tr><td>No user to be graded.</td></tr></table>';
200: my $bodytext=&Apache::lonxml::get_all_text("/task",$parser);
201: }
202:
1.1 albertel 203: } else {
204: # page_start returned a starting result, delete it if we don't need it
205: $result = '';
206: }
207: return $result;
208: }
209:
210: sub end_Task {
211: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
212: my $result='';
213: my $status=$Apache::inputtags::status['-1'];
214: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
1.15 albertel 215: $target eq 'tex') {
1.1 albertel 216: if (
1.11 albertel 217: (($target eq 'web') && ($env{'request.state'} ne 'construct')) ||
1.1 albertel 218: ($target eq 'answer') || ($target eq 'tex')
219: ) {
220: if ($target eq 'web') {
1.9 albertel 221: if ($status eq 'CAN_ANSWER') {
1.15 albertel 222: $result.="\n".'<table border="1">'.
1.9 albertel 223: &Apache::inputtags::file_selector('0',"bridgetask","*",
224: 'portfolioonly').
225: "</table>";
226: $result.=&Apache::inputtags::gradestatus('0');
227: }
1.13 albertel 228: }
229: if ($target eq 'web' || $target eq 'webgrade') {
1.1 albertel 230: $result.=&Apache::lonxml::xmlend().'</html>';
231: }
232: }
233: if ($target eq 'grade') {
1.12 albertel 234: my $award='SUBMITTED';
1.14 albertel 235: &Apache::essayresponse::file_submission('0','bridgetask','portfiles',\$award);
236: if ($award eq 'SUBMITTED' &&
237: $Apache::lonhomework::results{"resource.0.bridgetask.portfiles"}) {
1.10 albertel 238: $Apache::lonhomework::results{"resource.0.tries"}=
239: 1+$Apache::lonhomework::history{"resource.0.tries"};
240: }
1.14 albertel 241: $Apache::lonhomework::results{"resource.0.award"}=$award;
1.4 albertel 242: &Apache::lonhomework::showhash(%Apache::lonhomework::results);
243: &Apache::structuretags::finalize_storage();
1.14 albertel 244: if ($award eq 'SUBMITTED') {
245: &add_to_queue();
246: }
1.1 albertel 247: }
1.15 albertel 248: } elsif ($target eq 'webgrade') {
249: $result.="\n<hr />";
250: $result.='<input type="submit" name="next" value="'.
251: &mt('Save & Next').'" /> ';
252: $result.='<input type="submit" name="end" value="'.
253: &mt('Save & Stop Grading').'" /> ';
254: $result.='<input type="submit" name="end" value="'.
255: &mt('Throw Away & Stop Grading').'" /> ';
256: $result.='</form>'.&Apache::loncommon::endbodytag().'</html>';
1.1 albertel 257: } elsif ($target eq 'meta') {
1.2 albertel 258: $result.='<parameter part="0" package="Task"></parameter>'."\n";
1.1 albertel 259: #$result.=&Apache::response::meta_part_order();
260: #$result.=&Apache::response::meta_response_order();
261: }
1.4 albertel 262: undef($Apache::lonhomework::parsing_a_task);
1.1 albertel 263: return $result;
264: }
265:
1.16 ! albertel 266: sub setup_env_for_other_user {
! 267: my ($queue_key,$safeeval)=@_;
! 268: my ($symb,$uname,$udom)=&decode_queue_key($queue_key);
! 269: $env{'form.grade_symb'}=$symb;
! 270: $env{'form.grade_domain'}=$udom;
! 271: $env{'form.grade_username'}=$uname;
! 272: $env{'form.grade_courseid'}=$env{'request.course.id'};
! 273: &Apache::lonxml::initialize_rndseed($safeeval);
! 274: }
! 275:
1.14 albertel 276: sub add_to_queue {
277: my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
278: my $cnum=$env{'course.'.$cid.'.num'};
279: my $cdom=$env{'course.'.$cid.'.domain'};
280: my %data;
281: $data{"$symb\0queue\0$uname\@$udom"}=[$Apache::inputtags::slot_name];
282: &Apache::lonnet::put('gradingqueue',\%data,$cdom,$cnum);
283: }
284:
285: sub show_queue {
286: my $result;
287: my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
288: my $cnum=$env{'course.'.$cid.'.num'};
289: my $cdom=$env{'course.'.$cid.'.domain'};
1.16 ! albertel 290: my $regexp="^$symb\0";
1.14 albertel 291: my %queue=&Apache::lonnet::dump('gradingqueue',$cdom,$cnum,$regexp);
1.16 ! albertel 292: $result.="\n<h3>Current Queue</h3><table><tr><th>resource</th><th>user</th><th>type</th><th>data</th></tr>";
1.14 albertel 293: foreach my $key (sort(keys(%queue))) {
1.16 ! albertel 294: if ($key=~/locked$/) {
! 295: my ($symb,$uname,$udom) = &decode_queue_key($key);
! 296: my $title=&Apache::lonnet::gettitle($symb);
! 297: $result.="<tr><td>$title</td><td>$uname</td><td>";
! 298: $result.='<td>lock</td><td>'.$queue{$key}.'</td></tr>';
! 299: } elsif ($key=~/timestamp$/) {
! 300: my ($symb,undef) = split("\0",$key);
! 301: my $title=&Apache::lonnet::gettitle($symb);
! 302: $result.="<tr><td>$title</td><td></td><td>";
! 303: $result.='<td>last queue modification time</td><td>'.
! 304: &Apache::lonlocal::locallocaltime($queue{$key})."</td></tr>";
! 305: } else {
! 306: my ($symb,$uname,$udom) = &decode_queue_key($key);
! 307: my $title=&Apache::lonnet::gettitle($symb);
! 308: $result.="<tr><td>$title</td><td>$uname</td><td>";
! 309: my $slot=$queue{$key}->[0];
! 310: my %slot_data=&Apache::lonnet::get_slot($slot);
! 311: $result.='<td>queue entry</td><td>End time: '.&Apache::lonlocal::locallocaltime($slot_data{'endtime'})."</td></tr>";
! 312: }
1.14 albertel 313: }
1.15 albertel 314: $result.="</table><hr />\n";
1.14 albertel 315: return $result;
316: }
317:
318: sub decode_queue_key {
319: my ($key)=@_;
320: my ($symb,undef,$user) = split("\0",$key);
321: my ($uname,$udom) = split('@',$user);
322: return ($symb,$uname,$udom);
323: }
324:
325: sub queue_key_locked {
1.15 albertel 326: my ($key,$cdom,$cnum)=@_;
1.14 albertel 327: my ($key_locked,$value)=
328: &Apache::lonnet::get('gradingqueue',["$key\0locked"],$cdom,$cnum);
329: if ($key_locked eq "$key\0locked") {
330: return $value;
331: }
332: return undef;
333: }
334:
335: sub pick_from_queue_data {
1.15 albertel 336: my ($check_section,$queue,$cdom,$cnum)=@_;
1.16 ! albertel 337: foreach my $key (keys(%$queue)) {
1.14 albertel 338: my ($symb,$uname,$udom)=&decode_queue_key($key);
339: if ($check_section) {
340: my $section=&Apache::lonnet::getsection($uname,$udom);
1.15 albertel 341: if ($section ne $check_section) {
342: &Apache::lonnet::logthis("not my sec");
343: next;
344: }
1.14 albertel 345: }
346: my $slot=$queue->{$key}[0];
347: my %slot_data=&Apache::lonnet::get_slot($slot);
1.15 albertel 348: if ($slot_data{'endtime'} > time) {
349: &Apache::lonnet::logthis("not time");
350: next;
351: }
352: if (&queue_key_locked($key,$cdom,$cnum)) {
353: &Apache::lonnet::logthis("someone already has um.");
354: next;
355: }
1.14 albertel 356: return $key;
357: }
358: return undef;
359: }
360:
1.15 albertel 361: sub find_mid_grade {
362: my ($symb,$cdom,$cnum)=@_;
1.16 ! albertel 363: my $todo=&Apache::lonnet::unescape($env{'form.gradingkey'});
1.15 albertel 364: my $me=$env{'user.name'}.'@'.$env{'user.domain'};
365: if ($todo) {
366: my $who=&queue_key_locked($todo,$cdom,$cnum);
367: if ($who eq $me) { return $todo; }
368: }
369: my $regexp="^$symb\0.*\0locked\$";
370: my %locks=&Apache::lonnet::dump('gradingqueue',$cdom,$cnum,$regexp);
371: foreach my $key (keys(%locks)) {
372: my $who=$locks{$key};
373: if ($who eq $me) {
374: $todo=$key;
375: $todo=~s/\0locked$//;
376: return $todo;
377: }
378: }
379: return undef;
380: }
381:
1.14 albertel 382: sub get_from_queue {
383: my $result;
384: my ($symb,$cid,$udom,$uname)=&Apache::lonxml::whichuser();
385: my $cnum=$env{'course.'.$cid.'.num'};
386: my $cdom=$env{'course.'.$cid.'.domain'};
387: my $todo;
1.15 albertel 388: # FIXME need to find if I am 'mid grading'
389: $todo=&find_mid_grade($symb,$cdom,$cnum);
390: &Apache::lonnet::logthis("found ".join(':',&decode_queue_key($todo)));
1.16 ! albertel 391: if ($todo) { return $todo; }
1.14 albertel 392: while (1) {
393: my $starttime=time;
394: &Apache::lonnet::put('gradingqueue',{"$symb\0timestamp"=>$starttime},
395: $cdom,$cnum);
1.15 albertel 396: &Apache::lonnet::logthis("$starttime");
1.14 albertel 397: my $regexp="^$symb\0queue\0";
398: my %queue=&Apache::lonnet::dump('gradingqueue',$cdom,$cnum,$regexp);
399: #make a pass looking for a user in my section
400: if ($env{'request.course.sec'}) {
1.15 albertel 401: &Apache::lonnet::logthis("sce");
402: $todo=&pick_from_queue_data($env{'request.course.sec'},\%queue,
403: $cdom,$cnum);
404: &Apache::lonnet::logthis("sce $todo");
1.14 albertel 405: }
406: # no one in our section so look for any user that is ready for grading
407: if (!$todo) {
1.15 albertel 408: &Apache::lonnet::logthis("no sce");
409: $todo=&pick_from_queue_data($env{'request.course.sec'},\%queue,
410: $cdom,$cnum);
411: &Apache::lonnet::logthis("no sce $todo");
1.14 albertel 412: }
413: # no user to grade
414: if (!$todo) { last; }
1.15 albertel 415: &Apache::lonnet::logthis("got $todo");
1.14 albertel 416: # otherwise found someone so lets try to lock them
417: my $success=&Apache::lonnet::newput('gradingqueue',
418: {"$todo\0locked"=>
419: $env{'user.name'}.'@'.$env{'user.domain'}},
420: $cdom,$cnum);
421: # someone else already picked them
1.15 albertel 422: &Apache::lonnet::logthis("success $todo");
1.14 albertel 423: if ($success ne 'ok') { next; }
424: my (undef,$endtime)=
425: &Apache::lonnet::get('gradingqueue',["$symb\0timestamp"],
426: $cdom,$cnum);
1.15 albertel 427: &Apache::lonnet::logthis("emd $endtime");
1.14 albertel 428: # someone else already modified the queue,
429: # perhaps our picked user wass already fully graded between
430: # when we picked him and when we locked his record? so lets
431: # double check.
432: if ($endtime != $starttime) {
433: my ($key,$value)=
434: &Apache::lonnet::get('gradingqueue',["$todo"],
435: $cdom,$cnum);
1.15 albertel 436: &Apache::lonnet::logthis("check $key .. $value");
1.14 albertel 437: if ($key eq $todo && ref($value)) {
438: } else {
439: &Apache::lonnet::del('gradingqueue',["$todo\0locked"],
440: $cdom,$cnum);
1.15 albertel 441: &Apache::lonnet::logthis("del");
1.14 albertel 442: next;
443: }
444: }
1.15 albertel 445: &Apache::lonnet::logthis("last $todo");
1.14 albertel 446: last;
447: }
448: return $todo;
449: }
450:
1.1 albertel 451: sub start_ClosingParagraph {
452: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
453: my $result;
454: if ($target eq 'web') {
1.13 albertel 455: } elsif ($target eq 'webgrade') {
456: &Apache::lonxml::startredirection();
1.1 albertel 457: }
458: return $result;
459: }
460:
461: sub end_ClosingParagraph {
462: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
463: my $result;
464: if ($target eq 'web') {
1.13 albertel 465: } elsif ($target eq 'webgrade') {
466: &Apache::lonxml::endredirection();
1.1 albertel 467: }
468: return $result;
469: }
470:
471: my %dimension;
472: sub start_Dimension {
473: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
474: undef(%dimension);
1.9 albertel 475: my $dim_id=$Apache::lonxml::curdepth;
476: $Apache::bridgetask::dimension=$dim_id;
477: push(@Apache::bridgetask::dimensionlist,$dim_id);
478: undef(@Apache::bridgetask::instance);
1.1 albertel 479: return '';
480: }
481:
1.13 albertel 482: sub get_instance {
483: #FIXME just grabbing the first one for now, need
484: #to randomly pick one until all have been seen
485: #then start repicking
486: &Apache::response::pushrandomnumber();
487: my @order=&Math::Random::random_permutation(@{$dimension{'instances'}});
488: return $order[0];
489: }
490:
1.1 albertel 491: sub end_Dimension {
492: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
493: my $result;
494: if ($target eq 'web') {
1.13 albertel 495: my $instance=&get_instance();
1.9 albertel 496: $result=$dimension{'intro'}.$dimension{$instance.'.text'};
1.13 albertel 497: } elsif ($target eq 'webgrade') {
498: my $instance=&get_instance();
1.15 albertel 499: $result.="\n".'<table>';
1.13 albertel 500: foreach my $id (@{$dimension{$instance.'.criterias'}}) {
501: $result.='<tr><td>'.
502: $dimension{$instance.'.criteria.'.$id}.'</td></tr>';
503: }
504: $result.='</table>';
1.1 albertel 505: }
506: return $result;
507: }
508:
509: sub start_IntroParagraph {
510: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
511: my $result;
1.13 albertel 512: if ($target eq 'web' || $target eq 'webgrade') {
513: if ($tagstack->[-2] eq 'Dimension' || $target eq 'webgrade') {
1.1 albertel 514: &Apache::lonxml::startredirection();
515: }
516: }
517: return $result;
518: }
519:
520: sub end_IntroParagraph {
521: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
522: my $result;
1.13 albertel 523: if ($target eq 'web' || $target eq 'webgrade') {
524: if ($tagstack->[-2] eq 'Dimension' || $target eq 'webgrade') {
1.1 albertel 525: $dimension{'intro'}=&Apache::lonxml::endredirection();
526: }
527: }
528: return $result;
529: }
530:
531: sub start_Instance {
532: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
533: push(@{$dimension{'instances'}},$Apache::lonxml::curdepth);
1.9 albertel 534: push(@Apache::bridgetask::instance,$Apache::lonxml::curdepth);
535: push(@Apache::bridgetask::instancelist,$Apache::lonxml::curdepth);
1.1 albertel 536: return '';
537: }
538:
539: sub end_Instance {
540: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
541: return '';
542: }
543:
544: sub start_InstanceText {
545: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.13 albertel 546: if ($target eq 'web' || $target eq 'webgrade') {
1.1 albertel 547: &Apache::lonxml::startredirection();
548: }
549: return '';
550: }
551:
552: sub end_InstanceText {
553: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.9 albertel 554: my $instance_id=$Apache::bridgetask::instance[-1];
1.13 albertel 555: if ($target eq 'web' || $target eq 'webgrade') {
1.1 albertel 556: $dimension{$instance_id.'.text'}=&Apache::lonxml::endredirection();
557: }
558: return '';
559: }
560:
561: sub start_Criteria {
562: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.13 albertel 563: if ($target eq 'web' || $target eq 'webgrade') {
1.1 albertel 564: &Apache::lonxml::startredirection();
565: }
566: return '';
567: }
568:
569: sub end_Criteria {
570: my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
1.9 albertel 571: my $instance_id=$Apache::bridgetask::instance[-1];
1.13 albertel 572: if ($target eq 'web' || $target eq 'webgrade') {
1.1 albertel 573: my $criteria=&Apache::lonxml::endredirection();
574: my $id=$Apache::lonxml::curdepth;
575: $dimension{$instance_id.'.criteria.'.$id}=$criteria;
576: push(@{$dimension{$instance_id.'.criterias'}},$id);
577: }
578: return '';
579: }
580:
1.4 albertel 581: sub proctor_validation_screen {
582: my ($slot) = @_;
583: my (undef,undef,$domain,$user) = &Apache::lonxml::whichuser();
1.5 albertel 584: my $url=&Apache::lonnet::studentphoto($domain,$user,'jpg');
1.11 albertel 585: $user=$env{'form.proctorname'};
586: if ($env{'form.proctordomain'}) { $domain=$env{'form.proctordomain'}; }
1.4 albertel 587: my $msg;
1.11 albertel 588: if ($env{'form.proctorpassword'}) {
1.4 albertel 589: $msg='<p><font color="red">'.&mt("Failed to authenticate the proctor.")
590: .'</font></p>';
591: }
592: my $result= (<<ENDCHECKOUT);
593: <h2>Proctor Validation</h2>
594: <p>Your room's proctor needs to validate your access to this resource.</p>
595: $msg
1.11 albertel 596: <form name="checkout" method="POST" action="$env{'request.uri'}">
1.4 albertel 597: <input type="hidden" name="validate" value="yes" />
598: <input type="hidden" name="submitted" value="yes" />
599: <table>
600: <tr><td>Proctor's Username:</td><td><input type="string" name="proctorname" value="$user" /></td></tr>
601: <tr><td>Password:</td><td><input type="password" name="proctorpassword" value="" /></td></tr>
1.6 albertel 602: <tr><td>Proctor's Domain:</td><td><input type="string" name="proctordomain" value="$domain" /></td></tr>
1.4 albertel 603: </table>
604: <input type="submit" name="checkoutbutton" value="Validate" /><br />
605: Student who should be logged in is:<br />
1.5 albertel 606: <img src="$url" /><br />
1.4 albertel 607: </form>
608: ENDCHECKOUT
609: return $result;
610: }
611:
1.1 albertel 612: 1;
613: __END__
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