1: # The LearningOnline Network with CAPA
2: # The LON-CAPA Homework handler
3: #
4: # $Id: lonhomework.pm,v 1.349.2.4 2015/06/15 20:23:19 musolffc Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27:
28:
29: package Apache::lonhomework;
30: use strict;
31: use Apache::style();
32: use Apache::lonxml();
33: use Apache::lonnet;
34: use Apache::lonplot();
35: use Apache::inputtags();
36: use Apache::structuretags();
37: use Apache::randomlabel();
38: use Apache::response();
39: use Apache::hint();
40: use Apache::outputtags();
41: use Apache::caparesponse();
42: use Apache::radiobuttonresponse();
43: use Apache::optionresponse();
44: use Apache::imageresponse();
45: use Apache::essayresponse();
46: use Apache::externalresponse();
47: use Apache::rankresponse();
48: use Apache::matchresponse();
49: use Apache::chemresponse();
50: use Apache::functionplotresponse();
51: use Apache::drawimage();
52: use Apache::Constants qw(:common);
53: use Apache::loncommon();
54: use Apache::lonparmset();
55: use Apache::lonlocal;
56: use Time::HiRes qw( gettimeofday tv_interval );
57: use HTML::Entities();
58: use File::Copy();
59:
60: # FIXME - improve commenting
61:
62:
63: BEGIN {
64: &Apache::lonxml::register_insert();
65: }
66:
67:
68: =pod
69:
70: =item set_bubble_lines()
71:
72: Called at analysis time to set the bubble lines
73: hash for the problem.. This should be called in the
74: end_problemtype tag in analysis mode.
75:
76: We fetch the hash of part id counters from lonxml
77: and push them into analyze:{part_id.bubble_lines}.
78:
79: =cut
80:
81: sub set_bubble_lines {
82: my %bubble_counters = &Apache::lonxml::get_bubble_line_hash();
83:
84: foreach my $key (keys(%bubble_counters)) {
85: $Apache::lonhomework::analyze{"$key.bubble_lines"} =
86: $bubble_counters{"$key"};
87: }
88: }
89:
90: #
91: # Decides what targets to render for.
92: # Implicit inputs:
93: # Various session environment variables:
94: # request.state - published - is a /res/ resource
95: # uploaded - is a /uploaded/ resource
96: # contruct - is a /priv/ resource
97: # form.grade_target - a form parameter requesting a specific target
98: sub get_target {
99: &Apache::lonxml::debug("request.state = $env{'request.state'}");
100: if( defined($env{'form.grade_target'})) {
101: &Apache::lonxml::debug("form.grade_target= $env{'form.grade_target'}");
102: } else {
103: &Apache::lonxml::debug("form.grade_target <undefined>");
104: }
105: if (($env{'request.state'} eq "published") ||
106: ($env{'request.state'} eq "uploaded")) {
107: if ( defined($env{'form.grade_target'} )
108: && ($env{'form.grade_target'} eq 'tex')) {
109: return ($env{'form.grade_target'});
110: } elsif ( defined($env{'form.grade_target'} )
111: && ($Apache::lonhomework::viewgrades eq 'F' )) {
112: return ($env{'form.grade_target'});
113: } elsif ( $env{'form.grade_target'} eq 'webgrade'
114: && ($Apache::lonhomework::queuegrade eq 'F' )) {
115: return ($env{'form.grade_target'});
116: } elsif ($env{'form.grade_target'} eq 'answer') {
117: if ($env{'form.answer_output_mode'} eq 'tex') {
118: return ($env{'form.grade_target'});
119: }
120: }
121: if ($env{'form.webgrade'} &&
122: ($Apache::lonhomework::modifygrades eq 'F'
123: || $Apache::lonhomework::queuegrade eq 'F' )) {
124: return ('grade','webgrade');
125: }
126: if ( defined($env{'form.submitted'}) &&
127: ( !defined($env{'form.newrandomization'}))) {
128: return ('grade', 'web');
129: } else {
130: return ('web');
131: }
132: } elsif ($env{'request.state'} eq "construct") {
133: #
134: # We are in construction space, editing and testing problems
135: #
136: if ( defined($env{'form.grade_target'}) ) {
137: return ($env{'form.grade_target'});
138: }
139: if ( defined($env{'form.preview'})) {
140: if ( defined($env{'form.submitted'})) {
141: #
142: # We are doing a problem preview
143: #
144: return ('grade', 'web');
145: } else {
146: return ('web');
147: }
148: } else {
149: if ($env{'form.problemstate'} eq 'WEB_GRADE') {
150: return ('grade','webgrade','answer');
151: } elsif ($env{'form.problemmode'} eq 'view') {
152: return ('grade','web','answer');
153: } elsif ($env{'form.problemmode'} eq 'saveview') {
154: return ('modified','web','answer');
155: } elsif ($env{'form.problemmode'} eq 'discard') {
156: return ('web','answer');
157: } elsif (($env{'form.problemmode'} eq 'saveedit') ||
158: ($env{'form.problemmode'} eq 'undo')) {
159: return ('modified','no_output_web','edit');
160: } elsif ($env{'form.problemmode'} eq 'edit') {
161: return ('no_output_web','edit');
162: } else {
163: return ('web');
164: }
165: }
166: #
167: # End of Authoring Space
168: #
169: }
170: #
171: # Huh? We are nowhere, so do nothing.
172: #
173: return ();
174: }
175:
176: sub setup_vars {
177: my ($target) = @_;
178: return ';'
179: # return ';$external::target='.$target.';';
180: }
181:
182: sub proctor_checked_in {
183: my ($slot_name,$slot,$type)=@_;
184: my @possible_proctors=split(",",$slot->{'proctor'});
185:
186: return 1 if (!@possible_proctors);
187:
188: my $key;
189: if ($type eq 'Task') {
190: my $version=$Apache::lonhomework::history{'resource.0.version'};
191: $key ="resource.$version.0.checkedin";
192: } elsif ($type eq 'problem') {
193: $key ='resource.0.checkedin';
194: }
195: # backward compatability, used to be username@domain,
196: # now is username:domain
197: my $who = $Apache::lonhomework::history{$key};
198: if ($who !~ /:/) {
199: $who =~ tr/@/:/;
200: }
201: foreach my $possible (@possible_proctors) {
202: if ($who eq $possible
203: && $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
204: return 1;
205: }
206: }
207:
208: return 0;
209: }
210:
211: sub check_slot_access {
212: my ($id,$type)=@_;
213:
214: # does it pass normal muster
215: my ($status,$datemsg)=&check_access($id);
216:
217: my $useslots = &Apache::lonnet::EXT("resource.0.useslots");
218: if ($useslots ne 'resource' && $useslots ne 'map'
219: && $useslots ne 'map_map') {
220: return ($status,$datemsg);
221: }
222:
223: if ($status eq 'SHOW_ANSWER' ||
224: $status eq 'CLOSED' ||
225: $status eq 'INVALID_ACCESS' ||
226: $status eq 'UNAVAILABLE') {
227: return ($status,$datemsg);
228: }
229: if ($env{'request.state'} eq "construct") {
230: return ($status,$datemsg);
231: }
232:
233: if ($type eq 'Task') {
234: my $version=$Apache::lonhomework::history{'resource.version'};
235: if ($Apache::lonhomework::history{"resource.$version.0.checkedin"} &&
236: $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') {
237: return ('SHOW_ANSWER');
238: }
239: }
240:
241: my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent");
242: my $available = &Apache::lonnet::EXT("resource.0.available");
243: my @slots= (split(':',$availablestudent),split(':',$available));
244:
245: # if (!@slots) {
246: # return ($status,$datemsg);
247: # }
248: my $slotstatus='NOT_IN_A_SLOT';
249: my ($returned_slot,$slot_name);
250: my $now = time;
251: my $num_usable_slots = 0;
252: foreach my $slot (@slots) {
253: $slot =~ s/(^\s*|\s*$)//g;
254: &Apache::lonxml::debug("getting $slot");
255: my %slot=&Apache::lonnet::get_slot($slot);
256: &Apache::lonhomework::showhash(%slot);
257: next if ($slot{'endtime'} < $now);
258: $num_usable_slots ++;
259: if ($slot{'starttime'} < $now &&
260: $slot{'endtime'} > $now &&
261: &Apache::loncommon::check_ip_acc($slot{'ip'})) {
262: &Apache::lonxml::debug("$slot is good");
263: $slotstatus='NEEDS_CHECKIN';
264: $returned_slot=\%slot;
265: $slot_name=$slot;
266: last;
267: }
268: }
269: if ($slotstatus eq 'NEEDS_CHECKIN' &&
270: &proctor_checked_in($slot_name,$returned_slot,$type)) {
271: &Apache::lonxml::debug("proctor checked in");
272: $slotstatus=$status;
273: }
274:
275: my ($is_correct,$got_grade,$checkedin);
276: if ($type eq 'Task') {
277: my $version=$Apache::lonhomework::history{'resource.0.version'};
278: $got_grade =
279: ($Apache::lonhomework::history{"resource.$version.0.status"}
280: =~ /^(?:pass|fail)$/);
281: $is_correct =
282: ($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass'
283: || $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ );
284: $checkedin =
285: $Apache::lonhomework::history{"resource.$version.0.checkedin"};
286: } elsif ($type eq 'problem') {
287: $got_grade = 1;
288: $checkedin = $Apache::lonhomework::history{"resource.0.checkedin"};
289: $is_correct =
290: ($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/);
291: }
292:
293: &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
294:
295: # no slot is currently open, and has been checked in for this version
296: # but hasn't got a grade, therefore must be awaiting a grade
297: if (!defined($slot_name)
298: && $checkedin
299: && !$got_grade) {
300: return ('WAITING_FOR_GRADE');
301: }
302:
303: # Previously used slot is no longer open, and has been checked in for this version.
304: # However, the problem is not closed, and potentially, another slot might be
305: # used to gain access to it to work on it, until the due date is reached, and the
306: # problem then becomes CLOSED. Therefore return the slotstatus -
307: # (which will be one of: NOT_IN_A_SLOT, RESERVABLE, RESERVABLE_LATER, or NOTRESERVABLE.
308: if (!defined($slot_name) && $type eq 'problem') {
309: if ($slotstatus eq 'NOT_IN_A_SLOT') {
310: if (!$num_usable_slots) {
311: if ($env{'request.course.id'}) {
312: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
313: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
314: my ($symb)=&Apache::lonnet::whichuser();
315: $slotstatus = 'NOTRESERVABLE';
316: my ($reservable_now_order,$reservable_now,$reservable_future_order,
317: $reservable_future) =
318: &Apache::loncommon::get_future_slots($cnum,$cdom,$now,$symb);
319: if ((ref($reservable_now_order) eq 'ARRAY') && (ref($reservable_now) eq 'HASH')) {
320: if (@{$reservable_now_order} > 0) {
321: $slotstatus = 'RESERVABLE';
322: $datemsg = $reservable_now->{$reservable_now_order->[-1]}{'endreserve'};
323: }
324: }
325: unless ($slotstatus eq 'RESERVABLE') {
326: if ((ref($reservable_future_order) eq 'ARRAY') && (ref($reservable_future) eq 'HASH')) {
327: if (@{$reservable_future_order} > 0) {
328: $slotstatus = 'RESERVABLE_LATER';
329: $datemsg = $reservable_future->{$reservable_future_order->[0]}{'startreserve'};
330: }
331: }
332: }
333: }
334: }
335: }
336: return ($slotstatus,$datemsg);
337: }
338:
339: if ($slotstatus eq 'NOT_IN_A_SLOT'
340: && $checkedin ) {
341:
342: if ($got_grade) {
343: return ('SHOW_ANSWER');
344: } else {
345: return ('WAITING_FOR_GRADE');
346: }
347:
348: }
349:
350: if ( $is_correct) {
351: if ($type eq 'problem') {
352: return ($status);
353: }
354: return ('SHOW_ANSWER');
355: }
356:
357: if ( $status eq 'CANNOT_ANSWER' &&
358: ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) {
359: return ($status,$datemsg);
360: }
361:
362: return ($slotstatus,$datemsg,$slot_name,$returned_slot);
363: }
364:
365: # JB, 9/24/2002: Any changes in this function may require a change
366: # in lonnavmaps::resource::getDateStatus.
367: sub check_access {
368: my ($id) = @_;
369: my $date ='';
370: my $status;
371: my $datemsg = '';
372: my $lastdate = '';
373: my $type;
374: my $passed;
375:
376: if ($env{'request.state'} eq "construct") {
377: if ($env{'form.problemstate'}) {
378: if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
379: if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct'
380: && &hide_problem_status())) {
381: return ('CANNOT_ANSWER',
382: &mt('is in this state due to author settings.'));
383: }
384: } else {
385: return ($env{'form.problemstate'},
386: &mt('is in this state due to author settings.'));
387: }
388: }
389: &Apache::lonxml::debug("in construction ignoring dates");
390: $status='CAN_ANSWER';
391: $datemsg=&mt('is in under construction');
392: # return ($status,$datemsg);
393: }
394:
395: &Apache::lonxml::debug("checking for part :$id:");
396: &Apache::lonxml::debug("time:".time);
397:
398: my ($symb)=&Apache::lonnet::whichuser();
399: &Apache::lonxml::debug("symb:".$symb);
400: #if ($env{'request.state'} ne "construct" && $symb ne '') {
401: if ($env{'request.state'} ne "construct") {
402: my $idacc = &Apache::lonnet::EXT("resource.$id.acc");
403: my $allowed=&Apache::loncommon::check_ip_acc($idacc);
404: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
405: $status='INVALID_ACCESS';
406: $date=&mt("can not be accessed from your location.");
407: return($status,$date);
408: }
409: if ($env{'form.grade_imsexport'}) {
410: if (($env{'request.course.id'}) &&
411: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
412: return ('SHOW_ANSWER');
413: }
414: }
415: foreach my $temp ("opendate","duedate","answerdate") {
416: $lastdate = $date;
417: if ($temp eq 'duedate') {
418: $date = &due_date($id);
419: } else {
420: $date = &Apache::lonnet::EXT("resource.$id.$temp");
421: }
422:
423: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
424: if ($thistype =~ /^(con_lost|no_such_host)/ ||
425: $date =~ /^(con_lost|no_such_host)/) {
426: $status='UNAVAILABLE';
427: $date=&mt("may open later.");
428: return($status,$date);
429: }
430: if ($thistype eq 'date_interval') {
431: if ($temp eq 'opendate') {
432: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
433: }
434: if ($temp eq 'answerdate') {
435: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
436: }
437: }
438: &Apache::lonxml::debug("found :$date: for :$temp:");
439: if ($date eq '') {
440: $date = &mt("an unknown date"); $passed = 0;
441: } elsif ($date eq 'con_lost') {
442: $date = &mt("an indeterminate date"); $passed = 0;
443: } else {
444: if (time < $date) { $passed = 0; } else { $passed = 1; }
445: $date = &Apache::lonlocal::locallocaltime($date);
446: }
447: if (!$passed) { $type=$temp; last; }
448: }
449: &Apache::lonxml::debug("have :$type:$passed:");
450: if ($passed) {
451: $status='SHOW_ANSWER';
452: $datemsg=$date;
453: } elsif ($type eq 'opendate') {
454: $status='CLOSED';
455: $datemsg = &mt('will open on [_1]',$date);
456: } elsif ($type eq 'duedate') {
457: $status='CAN_ANSWER';
458: $datemsg = &mt('is due at [_1]',$date);
459: } elsif ($type eq 'answerdate') {
460: $status='CLOSED';
461: $datemsg = &mt('was due on [_1], and answers will be available on [_2]',
462: $lastdate,$date);
463: }
464: }
465: if ($status eq 'CAN_ANSWER' ||
466: (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
467: #check #tries, and if correct.
468: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
469: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
470: if ( $tries eq '' ) { $tries = '0'; }
471: if ( $maxtries eq '' &&
472: $env{'request.state'} ne 'construct') { $maxtries = '2'; }
473: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
474: # if (correct and show prob status) or excused then CANNOT_ANSWER
475: if ( ($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/)
476: && (&show_problem_status()) ) {
477: if (($Apache::lonhomework::history{"resource.$id.awarded"} >= 1) ||
478: (&Apache::lonnet::EXT("resource.$id.retrypartial") !~/^1|on|yes$/i)) {
479: $status = 'CANNOT_ANSWER';
480: }
481: } elsif ($Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
482: $status = 'CANNOT_ANSWER';
483: }
484: if ($status eq 'CANNOT_ANSWER'
485: && &show_answer_problem_status()) {
486: $status = 'SHOW_ANSWER';
487: }
488: }
489: if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
490: my @interval=&Apache::lonnet::EXT("resource.$id.interval");
491: &Apache::lonxml::debug("looking for interval @interval");
492: if ($interval[0]) {
493: my $first_access=&Apache::lonnet::get_first_access($interval[1]);
494: &Apache::lonxml::debug("looking for accesstime $first_access");
495: if (!$first_access) {
496: $status='NOT_YET_VIEWED';
497: my $due_date = &due_date($id);
498: my $seconds_left = $due_date - time;
499: if ($seconds_left > $interval[0] || $due_date eq '') {
500: $seconds_left = $interval[0];
501: }
502: $datemsg=&seconds_to_human_length($seconds_left);
503: }
504: }
505: }
506:
507: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
508: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
509: # return ('UNCHECKEDOUT','needs to be checked out');
510: #}
511:
512: &Apache::lonxml::debug("sending back :$status:$datemsg:");
513: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
514: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
515: $status='CAN_ANSWER';
516: $datemsg=&mt('is closed but you are allowed to view it');
517: }
518:
519: return ($status,$datemsg);
520: }
521: # this should work exactly like the copy in lonnavmaps.pm
522: sub due_date {
523: my ($part_id,$symb,$udom,$uname)=@_;
524: my $date;
525: my @interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
526: $udom,$uname);
527: &Apache::lonxml::debug("looking for interval $part_id $symb @interval");
528: my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
529: $udom,$uname);
530: &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
531: if ($interval[0] =~ /\d+/) {
532: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
533: &Apache::lonxml::debug("looking for first_access $first_access ($interval[1])");
534: if (defined($first_access)) {
535: my $interval = $first_access+$interval[0];
536: $date = (!$due_date || $interval < $due_date) ? $interval
537: : $due_date;
538: } else {
539: $date = $due_date;
540: }
541: } else {
542: $date = $due_date;
543: }
544: return $date;
545: }
546:
547: sub seconds_to_human_length {
548: my ($length)=@_;
549:
550: my $seconds=$length%60; $length=int($length/60);
551: my $minutes=$length%60; $length=int($length/60);
552: my $hours=$length%24; $length=int($length/24);
553: my $days=$length;
554:
555: my $timestr;
556: if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
557: if ($hours > 0) { $timestr.=($timestr?", ":"").
558: &mt('[quant,_1,hour]',$hours); }
559: if ($minutes > 0) { $timestr.=($timestr?", ":"").
560: &mt('[quant,_1,minute]',$minutes); }
561: if ($seconds > 0) { $timestr.=($timestr?", ":"").
562: &mt('[quant,_1,second]',$seconds); }
563: return $timestr;
564: }
565:
566: sub showhash {
567: my (%hash) = @_;
568: &showhashsubset(\%hash,'.');
569: return '';
570: }
571:
572: sub showarray {
573: my ($array)=@_;
574: my $string="(";
575: foreach my $elm (@{ $array }) {
576: if (ref($elm) eq 'ARRAY') {
577: $string.=&showarray($elm);
578: } elsif (ref($elm) eq 'HASH') {
579: $string.= "HASH --- \n<br />";
580: $string.= &showhashsubset($elm,'.');
581: } else {
582: $string.="$elm,"
583: }
584: }
585: chop($string);
586: $string.=")";
587: return $string;
588: }
589:
590: sub showhashsubset {
591: my ($hash,$keyre) = @_;
592: my $resultkey;
593: foreach $resultkey (sort(keys(%$hash))) {
594: if ($resultkey !~ /$keyre/) { next; }
595: if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
596: &Apache::lonxml::debug("$resultkey ---- ".
597: &showarray($$hash{$resultkey}));
598: } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
599: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
600: &showhashsubset($$hash{$resultkey},'.');
601: } else {
602: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
603: }
604: }
605: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
606: return '';
607: }
608:
609: sub setuppermissions {
610: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
611: unless ($Apache::lonhomework::browse eq 'F') {
612: $Apache::lonhomework::browse=&Apache::lonnet::allowed('bro',$env{'request.filename'});
613: }
614: my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
615: if (! $viewgrades &&
616: exists($env{'request.course.sec'}) &&
617: $env{'request.course.sec'} !~ /^\s*$/) {
618: $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
619: '/'.$env{'request.course.sec'});
620: }
621: $Apache::lonhomework::viewgrades = $viewgrades;
622:
623: if ($Apache::lonhomework::browse eq 'F' &&
624: $env{'form.devalidatecourseresdata'} eq 'on') {
625: my (undef,$courseid) = &Apache::lonnet::whichuser();
626: &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
627: $env{"course.$courseid.domain"});
628: }
629:
630: my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
631: if (! $modifygrades &&
632: exists($env{'request.course.sec'}) &&
633: $env{'request.course.sec'} !~ /^\s*$/) {
634: $modifygrades =
635: &Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
636: '/'.$env{'request.course.sec'});
637: }
638: $Apache::lonhomework::modifygrades = $modifygrades;
639:
640: my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'});
641: if (! $queuegrade &&
642: exists($env{'request.course.sec'}) &&
643: $env{'request.course.sec'} !~ /^\s*$/) {
644: $queuegrade =
645: &Apache::lonnet::allowed('qgr',$env{'request.course.id'}.
646: '/'.$env{'request.course.sec'});
647: }
648: $Apache::lonhomework::queuegrade = $queuegrade;
649: return '';
650: }
651:
652: sub unset_permissions {
653: undef($Apache::lonhomework::queuegrade);
654: undef($Apache::lonhomework::modifygrades);
655: undef($Apache::lonhomework::viewgrades);
656: undef($Apache::lonhomework::browse);
657: }
658:
659: sub setupheader {
660: my $request=$_[0];
661: &Apache::loncommon::content_type($request,'text/html');
662: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
663: &Apache::loncommon::no_cache($request);
664: }
665: # $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
666: # 'lastrevisiondate'));
667: $request->send_http_header;
668: return OK if $request->header_only;
669: return ''
670: }
671:
672: sub handle_save_or_undo {
673: my ($request,$problem,$result,$getobjref) = @_;
674:
675: my $file = &Apache::lonnet::filelocation("",$request->uri);
676: my $filebak =$file.".bak";
677: my $filetmp =$file.".tmp";
678: my $error=0;
679: if (($env{'form.problemmode'} eq 'undo') || ($env{'form.problemmode'} eq 'undoxml')) {
680: my $error=0;
681: if (!&File::Copy::copy($file,$filetmp)) { $error=1; }
682: if ((!$error) && (!&File::Copy::copy($filebak,$file))) { $error=1; }
683: if ((!$error) && (!&File::Copy::move($filetmp,$filebak))) { $error=1; }
684: if (!$error) {
685: &Apache::lonxml::info("<p><b>".
686: &mt("Undid changes, Switched [_1] and [_2]",
687: '<span class="LC_filename">'.$filebak.
688: '</span>',
689: '<span class="LC_filename">'.$file.
690: '</span>')."</b></p>");
691: } else {
692: &Apache::lonxml::info("<p><span class=\"LC_error\">".
693: &mt("Unable to undo, unable to switch [_1] and [_2]",
694: '<span class="LC_filename">'.
695: $filebak.'</span>',
696: '<span class="LC_filename">'.
697: $file.'</span>')."</span></p>");
698: $error=1;
699: }
700: } else {
701: &Apache::lonnet::correct_line_ends($result);
702:
703: my $fs=Apache::File->new(">$filebak");
704: if (defined($fs)) {
705: print $fs $$problem;
706: } else {
707: &Apache::lonxml::info("<span class=\"LC_error\">".
708: &mt("Unable to make backup [_1]",
709: '<span class="LC_filename">'.
710: $filebak.'</span>')."</span>");
711: $error=2;
712: }
713: my $fh=Apache::File->new(">$file");
714: if (defined($fh)) {
715: print $fh $$result;
716: if (ref($getobjref) eq 'SCALAR') {
717: if ($file =~ m{([^/]+)\.(html?)$}) {
718: my $fname = $1;
719: my $ext = $2;
720: my $path = $file;
721: $path =~ s/\Q$fname\E\.\Q$ext\E$//;
722: my (%allfiles,%codebase);
723: &Apache::lonnet::extract_embedded_items($file,\%allfiles,
724: \%codebase,$result);
725: if (keys(%allfiles) > 0) {
726: my $url = $request->uri;
727: my $state = <<STATE;
728: <input type="hidden" name="action" value="upload_embedded" />
729: <input type="hidden" name="url" value="$url" />
730: STATE
731: $$getobjref = "<h3>".&mt("Reference Warning")."</h3>".
732: "<p>".&mt("Completed upload of the file. This file contained references to other files.")."</p>".
733: "<p>".&mt("Please select the locations from which the referenced files are to be uploaded.")."</p>".
734: &Apache::loncommon::ask_for_embedded_content($url,$state,\%allfiles,\%codebase,
735: {'error_on_invalid_names' => 1,
736: 'ignore_remote_references' => 1,});
737: }
738: }
739: }
740: } else {
741: &Apache::lonxml::info('<span class="LC_error">'.
742: &mt("Unable to write to [_1]",
743: '<span class="LC_filename">'.
744: $file.'</span>').
745: '</span>');
746: $error|=4;
747: }
748: }
749: return $error;
750: }
751:
752: sub analyze_header {
753: my ($request) = @_;
754: my $js = &Apache::structuretags::setmode_javascript();
755:
756: # Breadcrumbs
757: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
758: 'text' => 'Authoring Space'},
759: {'href' => '',
760: 'text' => 'Problem Testing'},
761: {'href' => '',
762: 'text' => 'Analyzing a problem'}];
763:
764: my $result =
765: &Apache::loncommon::start_page('Analyzing a problem',
766: $js,
767: {'bread_crumbs' => $brcrum,})
768: .&Apache::loncommon::head_subbox(
769: &Apache::loncommon::CSTR_pageheader());
770: $result .=
771: '<form name="lonhomework" method="post" action="'.
772: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
773: '<input type="hidden" name="problemmode" value="'.
774: $env{'form.problemmode'}.'" />'.
775: &Apache::structuretags::remember_problem_state().'
776: <div class="LC_edit_problem_analyze_header">
777: <input type="button" name="submitmode" value="'.&mt("EditXML").'" '.
778: 'onclick="javascript:setmode(this.form,'."'editxml'".')" />
779: <input type="button" name="submitmode" value="'.&mt('Edit').'" '.
780: 'onclick="javascript:setmode(this.form,'."'edit'".')" />
781: <hr />
782: <input type="button" name="submitmode" value="'.&mt("View").'" '.
783: 'onclick="javascript:setmode(this.form,'."'view'".')" />
784: <hr />
785: </div>'
786: .&Apache::lonxml::message_location().
787: '</form>';
788: &Apache::lonxml::add_messages(\$result);
789: $request->print($result);
790: $request->rflush();
791: }
792:
793: sub analyze_footer {
794: my ($request) = @_;
795: $request->print(&Apache::loncommon::end_page());
796: $request->rflush();
797: }
798:
799: sub analyze {
800: my ($request,$file) = @_;
801: &Apache::lonxml::debug("Analyze");
802: my $result;
803: my %overall;
804: my %seedexample;
805: my %allparts;
806: my $rndseed=$env{'form.rndseed'};
807: &analyze_header($request);
808: my %prog_state=
809: &Apache::lonhtmlcommon::Create_PrgWin($request,$env{'form.numtoanalyze'});
810: for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
811: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,'last problem');
812: if (&Apache::loncommon::connection_aborted($request)) { return; }
813: my $thisseed=$i+$rndseed;
814: my $subresult=&Apache::lonnet::ssi($request->uri,
815: ('grade_target' => 'analyze'),
816: ('rndseed' => $thisseed));
817: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
818: my %analyze=&Apache::lonnet::str2hash($subresult);
819: my @parts;
820: if (ref($analyze{'parts'}) eq 'ARRAY') {
821: @parts=@{ $analyze{'parts'} };
822: }
823: foreach my $part (@parts) {
824: if (!exists($allparts{$part})) {$allparts{$part}=1;};
825: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
826: $analyze{$part.'.type'} eq 'stringresponse' ||
827: $analyze{$part.'.type'} eq 'formularesponse' ) {
828: foreach my $name (keys(%{ $analyze{$part.'.answer'} })) {
829: my $i=0;
830: foreach my $answer_part (@{ $analyze{$part.'.answer'}{$name} }) {
831: push( @{ $overall{$part.'.answer'}[$i] },
832: $answer_part);
833: my $concatanswer= join("\0",@{ $answer_part });
834: if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
835: $answer_part = ['<span class="LC_error">'.&mt('Error').'</span>'];
836: }
837: $seedexample{join("\0",$part,$i,@{$answer_part})}=
838: $thisseed;
839: $i++;
840: }
841: }
842: if (!keys(%{ $analyze{$part.'.answer'} })) {
843: my $answer_part =
844: ['<span class="LC_error">'.&mt('Error').'</span>'];
845: $seedexample{join("\0",$part,0,@{$answer_part})}=
846: $thisseed;
847: push( @{ $overall{$part.'.answer'}[0] },
848: $answer_part);
849: }
850: }
851: }
852: }
853: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,&mt('Analyzing Results'));
854: $request->print('<hr />'
855: .'<h3>'
856: .&mt('List of possible answers')
857: .'</h3>'
858: );
859: foreach my $part (sort(keys(%allparts))) {
860: if ((ref($overall{$part.'.answer'}) eq 'ARRAY') &&
861: (@{$overall{$part.'.answer'}} > 0)) {
862: for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
863: my $num_cols=scalar(@{ $overall{$part.'.answer'}[$i][0] });
864: $request->print(&Apache::loncommon::start_data_table()
865: .&Apache::loncommon::start_data_table_header_row()
866: .'<th colspan="'.($num_cols+1).'">'
867: .&mt('Part').' '.$part
868: );
869: if (scalar(@{ $overall{$part.'.answer'} }) > 1) {
870: $request->print(' '.&mt('Answer [_1]',$i+1));
871: }
872: $request->print('</th>'
873: .&Apache::loncommon::end_data_table_header_row()
874: );
875: my %frequency;
876: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) {
877: $frequency{join("\0",@{ $answer })}++;
878: }
879: $request->print(&Apache::loncommon::start_data_table_header_row()
880: .'<th colspan="'.($num_cols).'">'.&mt('Answer').'</th>'
881: .'<th>'.&mt('Frequency').'<br />'
882: .'('.&mt('click for example').')</th>'
883: .&Apache::loncommon::end_data_table_header_row()
884: );
885: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
886: $request->print(&Apache::loncommon::start_data_table_row()
887: .'<td>'
888: .join('</td><td>',split("\0",$answer))
889: .'</td>'
890: .'<td>'
891: .'<a href="'.$request->uri.'?rndseed='.$seedexample{join("\0",$part,$i,$answer)}.'">'.$frequency{$answer}.'</a>'
892: .'</td>'
893: .&Apache::loncommon::end_data_table_row()
894: );
895: }
896: $request->print(&Apache::loncommon::end_data_table());
897: }
898: } else {
899: $request->print('<p class="LC_warning">'
900: .&mt('Response [_1] is not analyzable at this time.',$part)
901: .'</p>'
902: );
903: }
904: }
905: if (scalar(keys(%allparts)) == 0 ) {
906: $request->print('<p class="LC_warning">'
907: .&mt('Found no analyzable responses in this problem.'
908: .' Currently only Numerical, Formula and String response styles are supported.')
909: .'</p>'
910: );
911: }
912: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
913: &analyze_footer($request);
914: &Apache::lonhomework::showhash(%overall);
915: return $result;
916: }
917:
918: {
919: my $show_problem_status;
920: sub reset_show_problem_status {
921: undef($show_problem_status);
922: }
923:
924: sub set_show_problem_status {
925: my ($new_status) = @_;
926: $show_problem_status = lc($new_status);
927: }
928:
929: sub hide_problem_status {
930: return ($show_problem_status eq 'no'
931: || $show_problem_status eq 'no_feedback_ever');
932: }
933:
934: sub show_problem_status {
935: return ($show_problem_status eq 'yes'
936: || $show_problem_status eq 'answer'
937: || $show_problem_status eq '');
938: }
939:
940: sub show_some_problem_status {
941: return ($show_problem_status eq 'no');
942: }
943:
944: sub show_no_problem_status {
945: return ($show_problem_status eq 'no_feedback_ever');
946: }
947:
948: sub show_answer_problem_status {
949: return ($show_problem_status eq 'answer');
950: }
951: }
952:
953: sub editxmlmode {
954: my ($request,$file) = @_;
955: my $result;
956: my $problem=&Apache::lonnet::getfile($file);
957: if ($problem eq -1) {
958: &Apache::lonxml::error(
959: '<p class="LC_error">'
960: .&mt('Unable to find [_1]',
961: '<span class="LC_filename">'.$file.'</span>')
962: .'</p>');
963:
964: $problem='';
965: }
966: if (($env{'form.problemmode'} eq 'saveeditxml') ||
967: ($env{'form.problemmode'} eq 'saveviewxml') ||
968: ($env{'form.problemmode'} eq 'undoxml')) {
969: my $error=&handle_save_or_undo($request,\$problem,
970: \$env{'form.editxmltext'});
971: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
972: }
973: &Apache::lonhomework::showhashsubset(\%env,'^form');
974: if ($env{'form.problemmode'} eq 'saveviewxml') {
975: &Apache::lonhomework::showhashsubset(\%env,'^form');
976: $env{'form.problemmode'}='view';
977: &renderpage($request,$file);
978: } else {
979: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
980: if ($cols > 80) { $cols = 80; }
981: if ($cols < 70) { $cols = 70; }
982: if ($rows < 20) { $rows = 20; }
983: my $js =
984: &Apache::edit::js_change_detection().
985: &Apache::loncommon::resize_textarea_js().
986: &Apache::structuretags::setmode_javascript().
987: &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
988:
989: # Breadcrumbs
990: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
991: 'text' => 'Authoring Space'},
992: {'href' => '',
993: 'text' => 'Problem Editing'}];
994:
995: my $start_page =
996: &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
997: {'no_auto_mt_title' => 1,
998: 'only_body' => 0,
999: 'add_entries' => {
1000: 'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
1001: 'onload' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
1002: },
1003: 'bread_crumbs' => $brcrum,
1004: });
1005:
1006: $result=$start_page
1007: .&Apache::loncommon::head_subbox(
1008: &Apache::loncommon::CSTR_pageheader());
1009: $result.=&renderpage($request,$file,['no_output_web'],1).
1010: '<form '.&Apache::edit::form_change_detection().' name="lonhomework" method="post" action="'.
1011: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1012: &Apache::structuretags::remember_problem_state().'
1013: <div class="LC_edit_problem_header">
1014: <div class="LC_edit_problem_header_title">'.
1015: &mt('Problem Editing').' '.&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').
1016: '</div><div class="LC_edit_actionbar" id="actionbar">';
1017:
1018: $result.='<input type="hidden" name="problemmode" value="saveedit" />'.
1019: &Apache::structuretags::problem_edit_buttons('editxml');
1020: $result.='<div class="LC_edit_problem_discards">';
1021:
1022: unless ($env{'environment.nocodemirror'}) {
1023: # dropdown menues
1024: $result .= '<ol class="LC_primary_menu LC_floatleft">'.
1025: &Apache::lonmenu::create_submenu("#", "", &mt("Insert Menu"), &Apache::structuretags::insert_menu_datastructure(),"").'</ol>';
1026: }
1027: $result .= '<ol class="LC_primary_menu LC_floatleft">'.
1028: Apache::lonmenu::create_submenu("#", "", &mt("Help"), &Apache::structuretags::helpmenu_datastructure(),"").'</ol>';
1029: $result.="</div>";
1030:
1031: $result.='<hr style="clear:both;visibility:hidden" /></div></div>'.&Apache::lonxml::message_location().
1032: &Apache::loncommon::xmleditor_js().
1033: '<textarea '.&Apache::edit::element_change_detection().
1034: ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" '.
1035: ' name="editxmltext" id="LC_editxmltext">'.
1036: &HTML::Entities::encode($problem,'<>&"').'</textarea>
1037: <div id="LC_aftertextarea">
1038: </div>
1039: </form>';
1040: my $resource = $env{'request.ambiguous'};
1041: unless($env{'environment.nocodemirror'}){
1042:
1043: $result .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined-xml.css">
1044: <script src="/adm/codemirror/codemirror-compressed-xml.js"></script>
1045: <script>
1046: CodeMirror.defineMode("mixedmode", function(config) {
1047: return CodeMirror.multiplexingMode(
1048: CodeMirror.getMode(config, "xml"),
1049: {
1050: open: "\<script type=\"loncapa/perl\"\>", close: "\</script\>",
1051: mode: CodeMirror.getMode(config, "perl"),
1052: delimStyle: "tag",
1053: }
1054: );
1055: });
1056: var cm = CodeMirror.fromTextArea(document.getElementById("LC_editxmltext"),
1057: {
1058: mode: "mixedmode",
1059: lineWrapping: true,
1060: lineNumbers: true,
1061: tabSize: 4,
1062: indentUnit: 4,
1063:
1064: autoCloseTags: true,
1065: autoCloseBrackets: true,
1066: height: "auto",
1067: styleActiveLine: true,
1068:
1069: extraKeys: {
1070: "Tab": "indentMore",
1071: "Shift-Tab": "indentLess",
1072: }
1073: });
1074: restoreScrollPosition("'.$resource.'");
1075: </script>';
1076: }
1077: $result .= &Apache::loncommon::end_page();
1078: &Apache::lonxml::add_messages(\$result);
1079: $request->print($result);
1080: }
1081: return '';
1082: }
1083:
1084: #
1085: # Render the page in whatever target desired.
1086: #
1087: sub renderpage {
1088: my ($request,$file,$targets,$return_string) = @_;
1089:
1090: my @targets = @{$targets || [&get_target()]};
1091: &Apache::lonhomework::showhashsubset(\%env,'form.');
1092: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1093:
1094: my $overall_result;
1095: foreach my $target (@targets) {
1096: # FIXME need to do something intelligent when a problem goes
1097: # from viewable to not viewable due to map conditions
1098: #&setuppermissions();
1099: #if ( $Apache::lonhomework::browse ne '2'
1100: # && $Apache::lonhomework::browse ne 'F' ) {
1101: # $request->print(" You most likely shouldn't see me.");
1102: #}
1103: #my $t0 = [&gettimeofday()];
1104: my $output=1;
1105: if ($target eq 'no_output_web') {
1106: $target = 'web'; $output=0;
1107: }
1108: my $problem=&Apache::lonnet::getfile($file);
1109: my $result;
1110: if ($problem eq -1) {
1111: $problem='';
1112: my $filename=(split('/',$file))[-1];
1113: my $error =
1114: '<p class="LC_error">'
1115: .&mt('Unable to find [_1]',
1116: '<span class="LC_filename">'.$filename.'</span>')
1117: ."</p>";
1118: $result.=
1119: &Apache::loncommon::simple_error_page($request,'Not available',
1120: $error,{'no_auto_mt_msg' => 1});
1121: return;
1122: }
1123:
1124: my %mystyle;
1125: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
1126: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
1127: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
1128:
1129: &Apache::lonxml::debug("Should be parsing now");
1130: $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
1131: &setup_vars($target),%mystyle);
1132: &finished_parsing();
1133: if (!$output) { $result = ''; }
1134: #$request->print("Result follows:");
1135: if ($target eq 'modified') {
1136: &handle_save_or_undo($request,\$problem,\$result);
1137: } else {
1138: if ($target eq 'analyze') {
1139: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
1140: undef(%Apache::lonhomework::analyze);
1141: }
1142: #my $td=&tv_interval($t0);
1143: #if ( $Apache::lonxml::debug) {
1144: #$result =~ s:</body>::;
1145: #$result.="<br />Spent $td seconds processing target $target\n</body>";
1146: #}
1147: # $request->print($result);
1148: $overall_result.=$result;
1149: # $request->rflush();
1150: }
1151: #$request->print(":Result ends");
1152: #my $td=&tv_interval($t0);
1153: }
1154: if (!$return_string) {
1155: &Apache::lonxml::add_messages(\$overall_result);
1156: $request->print($overall_result);
1157: $request->rflush();
1158: } else {
1159: return $overall_result;
1160: }
1161: }
1162:
1163: sub finished_parsing {
1164: undef($Apache::lonhomework::parsing_a_problem);
1165: undef($Apache::lonhomework::parsing_a_task);
1166: }
1167:
1168: # function extracted from get_template_html
1169: # returns "key" -> list
1170: # key: path of template
1171: # value 1: title
1172: # value 2: category
1173: # value 3: name of help topic ???
1174: sub get_template_list{
1175: my ($extension) = @_;
1176:
1177: my @files = glob($Apache::lonnet::perlvar{'lonIncludes'}.
1178: '/templates/*.'.$extension);
1179: @files = map {[$_,&mt(&Apache::lonnet::metadata($_, 'title')),
1180: (&Apache::lonnet::metadata($_, 'category')?&mt(&Apache::lonnet::metadata($_, 'category')):&mt('Miscellaneous')),
1181: &mt(&Apache::lonnet::metadata($_, 'help'))]} (@files);
1182: @files = sort {$a->[2].$a->[1] cmp $b->[2].$b->[1]} (@files);
1183: return @files;
1184: }
1185:
1186: sub get_template_html {
1187: my ($extension) = @_;
1188: my $result;
1189: my @allnames;
1190: &Apache::lonxml::debug("Looking for :$extension:");
1191: my $glob_extension = $extension;
1192: if ($extension eq 'survey' || $extension eq 'exam') {
1193: $glob_extension = 'problem';
1194: }
1195: my @files = &get_template_list($extension);
1196: my ($midpoint,$seconddiv,$numfiles);
1197: my @noexamplelink = ('blank.problem','blank.library','script.library');
1198: $numfiles = 0;
1199: foreach my $file (@files) {
1200: next if ($file->[1] !~ /\S/);
1201: $numfiles ++;
1202: }
1203: if ($numfiles > 0) {
1204: $result = '<div class="LC_left_float">';
1205: $midpoint = int($numfiles/2);
1206: if ($numfiles%2) {
1207: $midpoint ++;
1208: }
1209: }
1210: my $count = 0;
1211: my $currentcategory='';
1212: my $first = 1;
1213: my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
1214: foreach my $file (@files) {
1215: next if ($file->[1] !~ /\S/);
1216: if ($file->[2] ne $currentcategory) {
1217: $currentcategory=$file->[2];
1218: if ((!$seconddiv) && ($count >= $midpoint)) {
1219: $result .= '</div></div>'."\n".'<div class="LC_left_float">'."\n";
1220: $seconddiv = 1;
1221: } elsif (!$first) {
1222: $result.='</div>'."\n";
1223: } else {
1224: $first = 0;
1225: }
1226: $result.= '<div class="LC_Box">'."\n"
1227: .'<h3 class="LC_hcell">'.$currentcategory.'</h3>'."\n";
1228: $count++;
1229: }
1230: $result .=
1231: '<label><input type="radio" name="template" value="'.$file->[0].'" />'.
1232: $file->[1].'</label>';
1233: if ($file->[3]) {
1234: $result.=&Apache::loncommon::help_open_topic($file->[3]);
1235: }
1236: # Provide example link
1237: my $filename=$file->[0];
1238: $filename=~s{^\Q$londocroot\E}{};
1239: if (!(grep($filename =~ /\Q$_\E$/,@noexamplelink))) {
1240: $result .= ' <span class="LC_fontsize_small">'
1241: .&Apache::loncommon::modal_link(
1242: $filename.'?inhibitmenu=yes',&mt('Example'),600,420,'sample')
1243: .'</span>';
1244: }
1245: $result .= '<br />'."\n";
1246: $count ++;
1247: }
1248: if ($numfiles > 0) {
1249: $result .= '</div></div>'."\n".'<div class="LC_clear_float_footer"></div>'."\n";
1250: }
1251: return $result;
1252: }
1253:
1254: sub newproblem {
1255: my ($request) = @_;
1256:
1257: if ($env{'form.mode'} eq 'blank'){
1258: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1259: &File::Copy::copy('/home/httpd/html/res/adm/includes/templates/blank.problem',$dest);
1260: &renderpage($request,$dest);
1261: return;
1262: }
1263: if ($env{'form.template'}) {
1264: my $file = $env{'form.template'};
1265: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1266: &File::Copy::copy($file,$dest);
1267: &renderpage($request,$dest);
1268: return;
1269: }
1270:
1271: my ($extension) = ($request->uri =~ m/\.(\w+)$/);
1272: &Apache::lonxml::debug("Looking for :$extension:");
1273: my $templatelist=&get_template_html($extension);
1274: if ($env{'form.newfile'} && !$templatelist) {
1275: # no templates found
1276: my $templatefilename =
1277: $request->dir_config('lonIncludes').'/templates/blank.'.$extension;
1278: &Apache::lonxml::debug("$templatefilename");
1279: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1280: &File::Copy::copy($templatefilename,$dest);
1281: &renderpage($request,$dest);
1282: } else {
1283: my $url=&HTML::Entities::encode($request->uri,'<>&"');
1284: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1285: my $errormsg;
1286: my $instructions;
1287: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1288: 'text' => 'Authoring Space'},
1289: {'href' => '',
1290: 'text' => "Create New $extension"}];
1291: my $start_page =
1292: &Apache::loncommon::start_page("Create New $extension",
1293: undef,
1294: {'bread_crumbs' => $brcrum,});
1295: $request->print(
1296: $start_page
1297: .&Apache::loncommon::head_subbox(
1298: &Apache::loncommon::CSTR_pageheader())
1299: .'<h1>'.&mt("Creating a new $extension resource.")."</h1>
1300: $errormsg
1301: ".&mt("The requested file [_1] currently does not exist.",
1302: '<span class="LC_filename">'.$url.'</span>').'
1303: <p class="LC_info">
1304: '.&mt("To create a new $extension, select a template from the".
1305: " list below. Then click on the \"Create $extension\" button.").'
1306: </p><div><form action="'.$url.'" method="post">');
1307:
1308: if (defined($templatelist)) {
1309: $request->print($templatelist);
1310: }
1311: $request->print('<br /><input type="submit" name="newfile" value="'.
1312: &mt("Create $extension").'" />');
1313: $request->print('</form></div>'.&Apache::loncommon::end_page());
1314: }
1315: return;
1316: }
1317:
1318: sub update_construct_style {
1319: if ($env{'request.state'} eq "construct"
1320: && $env{'form.problemmode'} eq 'view'
1321: && defined($env{'form.submitted'})
1322: && !defined($env{'form.resetdata'})
1323: && !defined($env{'form.newrandomization'})) {
1324: if ((!$env{'form.style_file'} && $env{'construct.style'})
1325: ||$env{'form.clear_style_file'}) {
1326: &Apache::lonnet::delenv('construct.style');
1327: } elsif ($env{'form.style_file'}
1328: && $env{'construct.style'} ne $env{'form.style_file'}) {
1329: &Apache::lonnet::appenv({'construct.style' =>
1330: $env{'form.style_file'}});
1331: }
1332: }
1333: }
1334:
1335: #
1336: # Sets interval for current user so time left will be zero, either for the entire folder
1337: # containing the current resource, or just the resource, depending on value of first item
1338: # in interval array retrieved from EXT("resource.0.interval");
1339: #
1340: sub zero_timer {
1341: my ($symb) = @_;
1342: my ($hastimeleft,$first_access,$now);
1343: my @interval=&Apache::lonnet::EXT("resource.0.interval");
1344: if (@interval > 1) {
1345: if ($interval[1] eq 'course') {
1346: return;
1347: } else {
1348: my $now = time;
1349: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
1350: if ($first_access > 0) {
1351: if ($first_access+$interval[0] > $now) {
1352: my $done_time = $now - $first_access;
1353: my $snum = 1;
1354: if ($interval[1] eq 'map') {
1355: $snum = 2;
1356: }
1357: my $result =
1358: &Apache::lonparmset::storeparm_by_symb_inner($symb,'0_interval',
1359: $snum,$done_time,
1360: 'date_interval',
1361: $env{'user.name'},
1362: $env{'user.domain'});
1363: return $result;
1364: }
1365: }
1366: }
1367: }
1368: return;
1369: }
1370:
1371: sub handler {
1372: #my $t0 = [&gettimeofday()];
1373: my $request=$_[0];
1374:
1375: $Apache::lonxml::request=$request;
1376: $Apache::lonxml::debug=$env{'user.debug'};
1377: $env{'request.uri'}=$request->uri;
1378: &setuppermissions();
1379:
1380: my $file=&Apache::lonnet::filelocation("",$request->uri);
1381:
1382: #check if we know where we are
1383: if ($env{'request.course.fn'} && !&Apache::lonnet::symbread()) {
1384: # if we are browsing we might not be able to know where we are
1385: if ($Apache::lonhomework::browse ne 'F' &&
1386: $env{'request.state'} ne "construct") {
1387: #should know where we are, so ask
1388: &unset_permissions();
1389: $request->internal_redirect('/adm/ambiguous');
1390: return OK;
1391: }
1392: }
1393: if (&setupheader($request)) {
1394: &unset_permissions();
1395: return OK;
1396: }
1397:
1398: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
1399: &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
1400: my ($symb) = &Apache::lonnet::whichuser();
1401: &Apache::lonxml::debug('symb is '.$symb);
1402: if ($env{'request.state'} eq "construct") {
1403: if ( -e $file ) {
1404: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1405: ['problemmode']);
1406: if (!(defined $env{'form.problemmode'})) {
1407: #first visit to problem in construction space
1408: $env{'form.problemmode'}= 'view';
1409: &renderpage($request,$file);
1410: } elsif (($env{'form.problemmode'} eq 'editxml') ||
1411: ($env{'form.problemmode'} eq 'saveeditxml') ||
1412: ($env{'form.problemmode'} eq 'saveviewxml') ||
1413: ($env{'form.problemmode'} eq 'undoxml')) {
1414: &editxmlmode($request,$file);
1415: } elsif ($env{'form.problemmode'} eq 'calcanswers') {
1416: &analyze($request,$file);
1417: } else {
1418: &update_construct_style();
1419: &renderpage($request,$file);
1420: }
1421: } else {
1422: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1423: ['mode']);
1424: # requested file doesn't exist in contruction space
1425: &newproblem($request);
1426: }
1427: } else {
1428: # Set the event timer to zero if the "done button" was clicked. The button is
1429: # part of the doneButton form created in lonmenu.pm
1430: if ($symb && $env{'form.LC_interval_done'} eq 'true') {
1431: &zero_timer($symb);
1432: undef($env{'form.LC_interval_done'});
1433: }
1434: # just render the page normally outside of construction space
1435: &Apache::lonxml::debug("not construct");
1436: &renderpage($request,$file);
1437: }
1438: #my $td=&tv_interval($t0);
1439: #&Apache::lonxml::debug("Spent $td seconds processing");
1440: # always turn off debug messages
1441: $Apache::lonxml::debug=0;
1442: &unset_permissions();
1443: return OK;
1444:
1445: }
1446:
1447: 1;
1448: __END__
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