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lonhomework.pm
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Mon Oct 26 20:36:45 2015 UTC (8 years, 7 months ago) by
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Recording "done button" action in "User Notes"
When a student ends an exam by pressing the "done button", that action is recorded as a user note which can be viewed by course personnel on the student's personal information page.
1: # The LearningOnline Network with CAPA
2: # The LON-CAPA Homework handler
3: #
4: # $Id: lonhomework.pm,v 1.359 2015/10/26 20:36:45 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::loncapamath();
53: use Apache::Constants qw(:common);
54: use Apache::loncommon();
55: use Apache::lonparmset();
56: use Apache::lonlocal;
57: use Time::HiRes qw( gettimeofday tv_interval );
58: use HTML::Entities();
59: use File::Copy();
60:
61: # FIXME - improve commenting
62:
63:
64: BEGIN {
65: &Apache::lonxml::register_insert();
66: }
67:
68:
69: =pod
70:
71: =item set_bubble_lines()
72:
73: Called at analysis time to set the bubble lines
74: hash for the problem.. This should be called in the
75: end_problemtype tag in analysis mode.
76:
77: We fetch the hash of part id counters from lonxml
78: and push them into analyze:{part_id.bubble_lines}.
79:
80: =cut
81:
82: sub set_bubble_lines {
83: my %bubble_counters = &Apache::lonxml::get_bubble_line_hash();
84:
85: foreach my $key (keys(%bubble_counters)) {
86: $Apache::lonhomework::analyze{"$key.bubble_lines"} =
87: $bubble_counters{"$key"};
88: }
89: }
90:
91: #
92: # Decides what targets to render for.
93: # Implicit inputs:
94: # Various session environment variables:
95: # request.state - published - is a /res/ resource
96: # uploaded - is a /uploaded/ resource
97: # contruct - is a /priv/ resource
98: # form.grade_target - a form parameter requesting a specific target
99: sub get_target {
100: &Apache::lonxml::debug("request.state = $env{'request.state'}");
101: if( defined($env{'form.grade_target'})) {
102: &Apache::lonxml::debug("form.grade_target= $env{'form.grade_target'}");
103: } else {
104: &Apache::lonxml::debug("form.grade_target <undefined>");
105: }
106: if (($env{'request.state'} eq "published") ||
107: ($env{'request.state'} eq "uploaded")) {
108: if ( defined($env{'form.grade_target'} )
109: && ($env{'form.grade_target'} eq 'tex')) {
110: return ($env{'form.grade_target'});
111: } elsif ( defined($env{'form.grade_target'} )
112: && ($Apache::lonhomework::viewgrades eq 'F' )) {
113: return ($env{'form.grade_target'});
114: } elsif ( $env{'form.grade_target'} eq 'webgrade'
115: && ($Apache::lonhomework::queuegrade eq 'F' )) {
116: return ($env{'form.grade_target'});
117: } elsif ($env{'form.grade_target'} eq 'answer') {
118: if ($env{'form.answer_output_mode'} eq 'tex') {
119: return ($env{'form.grade_target'});
120: }
121: }
122: if ($env{'form.webgrade'} &&
123: ($Apache::lonhomework::modifygrades eq 'F'
124: || $Apache::lonhomework::queuegrade eq 'F' )) {
125: return ('grade','webgrade');
126: }
127: if ( defined($env{'form.submitted'}) &&
128: ( !defined($env{'form.newrandomization'}))) {
129: return ('grade', 'web');
130: } else {
131: return ('web');
132: }
133: } elsif ($env{'request.state'} eq "construct") {
134: #
135: # We are in construction space, editing and testing problems
136: #
137: if ( defined($env{'form.grade_target'}) ) {
138: return ($env{'form.grade_target'});
139: }
140: if ( defined($env{'form.preview'})) {
141: if ( defined($env{'form.submitted'})) {
142: #
143: # We are doing a problem preview
144: #
145: return ('grade', 'web');
146: } else {
147: return ('web');
148: }
149: } else {
150: if ($env{'form.problemstate'} eq 'WEB_GRADE') {
151: return ('grade','webgrade','answer');
152: } elsif ($env{'form.problemmode'} eq 'view') {
153: return ('grade','web','answer');
154: } elsif ($env{'form.problemmode'} eq 'saveview') {
155: return ('modified','web','answer');
156: } elsif ($env{'form.problemmode'} eq 'discard') {
157: return ('web','answer');
158: } elsif (($env{'form.problemmode'} eq 'saveedit') ||
159: ($env{'form.problemmode'} eq 'undo')) {
160: return ('modified','no_output_web','edit');
161: } elsif ($env{'form.problemmode'} eq 'edit') {
162: return ('no_output_web','edit');
163: } else {
164: return ('web');
165: }
166: }
167: #
168: # End of Authoring Space
169: #
170: }
171: #
172: # Huh? We are nowhere, so do nothing.
173: #
174: return ();
175: }
176:
177: sub setup_vars {
178: my ($target) = @_;
179: return ';'
180: # return ';$external::target='.$target.';';
181: }
182:
183: sub proctor_checked_in {
184: my ($slot_name,$slot,$type)=@_;
185: my @possible_proctors=split(",",$slot->{'proctor'});
186:
187: return 1 if (!@possible_proctors);
188:
189: my $key;
190: if ($type eq 'Task') {
191: my $version=$Apache::lonhomework::history{'resource.0.version'};
192: $key ="resource.$version.0.checkedin";
193: } elsif ($type eq 'problem') {
194: $key ='resource.0.checkedin';
195: }
196: # backward compatability, used to be username@domain,
197: # now is username:domain
198: my $who = $Apache::lonhomework::history{$key};
199: if ($who !~ /:/) {
200: $who =~ tr/@/:/;
201: }
202: foreach my $possible (@possible_proctors) {
203: if ($who eq $possible
204: && $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
205: return 1;
206: }
207: }
208:
209: return 0;
210: }
211:
212: sub check_slot_access {
213: my ($id,$type,$symb)=@_;
214:
215: # does it pass normal muster
216: my ($status,$datemsg)=&check_access($id,$symb);
217:
218: my $useslots = &Apache::lonnet::EXT("resource.0.useslots",$symb);
219: if ($useslots ne 'resource' && $useslots ne 'map'
220: && $useslots ne 'map_map') {
221: return ($status,$datemsg);
222: }
223:
224: my $checkin = 'resource.0.checkedin';
225: my $version;
226: if ($type eq 'Task') {
227: $version=$Apache::lonhomework::history{'resource.version'};
228: $checkin = "resource.$version.0.checkedin";
229: }
230: my $checkedin = $Apache::lonhomework::history{$checkin};
231: my ($returned_slot,$slot_name,$checkinslot,$ipused,$blockip,$now,$ip);
232: $now = time;
233: $ip=$env{'request.host'} || $ENV{'REMOTE_ADDR'};
234:
235: if ($checkedin) {
236: $checkinslot = $Apache::lonhomework::history{"$checkin.slot"};
237: my %slot=&Apache::lonnet::get_slot($checkinslot);
238: if ($slot{'iptied'}) {
239: $ipused = $Apache::lonhomework::history{"$checkin.ip"};
240: unless (($ip ne '') && ($ipused eq $ip)) {
241: $blockip = $slot{'iptied'};
242: $slot_name = $checkinslot;
243: $returned_slot = \%slot;
244: }
245: }
246: }
247:
248: if ($status eq 'SHOW_ANSWER') {
249: if ($blockip eq 'answer') {
250: return ('NEED_DIFFERENT_IP','',$slot_name,$returned_slot,$ipused);
251: } else {
252: return ($status,$datemsg);
253: }
254: }
255:
256: if ($status eq 'CLOSED' ||
257: $status eq 'INVALID_ACCESS' ||
258: $status eq 'UNAVAILABLE') {
259: return ($status,$datemsg);
260: }
261: if ($env{'request.state'} eq "construct") {
262: return ($status,$datemsg);
263: }
264:
265: if ($type eq 'Task') {
266: if ($checkedin &&
267: $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') {
268: if ($blockip eq 'answer') {
269: return ('NEED_DIFFERENT_IP','',$slot_name,$returned_slot,$ipused);
270: } else {
271: return ('SHOW_ANSWER');
272: }
273: }
274: }
275:
276: my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent",$symb);
277: my $available = &Apache::lonnet::EXT("resource.0.available",$symb);
278: my @slots= (split(':',$availablestudent),split(':',$available));
279:
280: # if (!@slots) {
281: # return ($status,$datemsg);
282: # }
283: undef($returned_slot);
284: undef($slot_name);
285: my $slotstatus='NOT_IN_A_SLOT';
286: my $num_usable_slots = 0;
287: if (!$symb) {
288: ($symb) = &Apache::lonnet::whichuser();
289: }
290: foreach my $slot (@slots) {
291: $slot =~ s/(^\s*|\s*$)//g;
292: &Apache::lonxml::debug("getting $slot");
293: my %slot=&Apache::lonnet::get_slot($slot);
294: &Apache::lonhomework::showhash(%slot);
295: next if ($slot{'endtime'} < $now);
296: $num_usable_slots ++;
297: if ($slot{'starttime'} < $now &&
298: $slot{'endtime'} > $now &&
299: &Apache::loncommon::check_ip_acc($slot{'ip'})) {
300: if ($slot{'iptied'}) {
301: if ($env{'request.course.id'}) {
302: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
303: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
304: if ($slot eq $checkinslot) {
305: if ($ip eq $ipused) {
306: &Apache::lonxml::debug("$slot is good");
307: $slotstatus ='NEEDS_CHECKIN';
308: } else {
309: $slotstatus = 'NEED_DIFFERENT_IP';
310: $slot_name = $slot;
311: $returned_slot = \%slot;
312: last;
313: }
314: } elsif ($ip) {
315: my $uniqkey = "$slot\0$symb\0$ip";
316: my %used_ip = &Apache::lonnet::get('slot_uniqueips',[$uniqkey],$cdom,$cnum);
317: if ($used_ip{$uniqkey}) {
318: $slotstatus = 'NEED_DIFFERENT_IP';
319: } else {
320: &Apache::lonxml::debug("$slot is good");
321: $slotstatus ='NEEDS_CHECKIN';
322: }
323: }
324: }
325: } else {
326: &Apache::lonxml::debug("$slot is good");
327: $slotstatus='NEEDS_CHECKIN';
328: }
329: if ($slotstatus eq 'NEEDS_CHECKIN') {
330: $returned_slot=\%slot;
331: $slot_name=$slot;
332: last;
333: }
334: }
335: }
336: if ($slotstatus eq 'NEEDS_CHECKIN' &&
337: &proctor_checked_in($slot_name,$returned_slot,$type)) {
338: &Apache::lonxml::debug("proctor checked in");
339: $slotstatus=$status;
340: }
341:
342: my ($is_correct,$got_grade);
343: if ($type eq 'Task') {
344: my $version=$Apache::lonhomework::history{'resource.0.version'};
345: $got_grade =
346: ($Apache::lonhomework::history{"resource.$version.0.status"}
347: =~ /^(?:pass|fail)$/);
348: $is_correct =
349: ($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass'
350: || $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ );
351: } elsif ($type eq 'problem') {
352: $got_grade = 1;
353: $is_correct =
354: ($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/);
355: }
356:
357: &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
358:
359: # no slot is currently open, and has been checked in for this version
360: # but hasn't got a grade, therefore must be awaiting a grade
361: if (!defined($slot_name)
362: && $checkedin
363: && !$got_grade) {
364: return ('WAITING_FOR_GRADE');
365: }
366:
367: # Previously used slot is no longer open, and has been checked in for this version.
368: # However, the problem is not closed, and potentially, another slot might be
369: # used to gain access to it to work on it, until the due date is reached, and the
370: # problem then becomes CLOSED. Therefore return the slotstatus -
371: # (which will be one of: NOT_IN_A_SLOT, RESERVABLE, RESERVABLE_LATER, or NOTRESERVABLE).
372: if (!defined($slot_name) && $type eq 'problem') {
373: if ($slotstatus eq 'NOT_IN_A_SLOT') {
374: if (!$num_usable_slots) {
375: if ($env{'request.course.id'}) {
376: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
377: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
378: unless ($symb) {
379: ($symb)=&Apache::lonnet::whichuser();
380: }
381: $slotstatus = 'NOTRESERVABLE';
382: my ($reservable_now_order,$reservable_now,$reservable_future_order,
383: $reservable_future) =
384: &Apache::loncommon::get_future_slots($cnum,$cdom,$now,$symb);
385: if ((ref($reservable_now_order) eq 'ARRAY') && (ref($reservable_now) eq 'HASH')) {
386: if (@{$reservable_now_order} > 0) {
387: $slotstatus = 'RESERVABLE';
388: $datemsg = $reservable_now->{$reservable_now_order->[-1]}{'endreserve'};
389: }
390: }
391: unless ($slotstatus eq 'RESERVABLE') {
392: if ((ref($reservable_future_order) eq 'ARRAY') && (ref($reservable_future) eq 'HASH')) {
393: if (@{$reservable_future_order} > 0) {
394: $slotstatus = 'RESERVABLE_LATER';
395: $datemsg = $reservable_future->{$reservable_future_order->[0]}{'startreserve'};
396: }
397: }
398: }
399: }
400: }
401: }
402: return ($slotstatus,$datemsg);
403: }
404:
405: if ($slotstatus eq 'NOT_IN_A_SLOT'
406: && $checkedin ) {
407:
408: if ($got_grade) {
409: if ($blockip eq 'answer') {
410: return ('NEED_DIFFERENT_IP','',$slot_name,$returned_slot,$ipused);
411: } else {
412: return ('SHOW_ANSWER');
413: }
414: } else {
415: return ('WAITING_FOR_GRADE');
416: }
417:
418: }
419:
420: if (($is_correct) && ($blockip ne 'answer')) {
421: if ($type eq 'problem') {
422: return ($status);
423: }
424: return ('SHOW_ANSWER');
425: }
426:
427: if ( $status eq 'CANNOT_ANSWER' &&
428: ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT' &&
429: $slotstatus ne 'NEED_DIFFERENT_IP') ) {
430: return ($status,$datemsg);
431: }
432: return ($slotstatus,$datemsg,$slot_name,$returned_slot,$ipused);
433: }
434:
435: # JB, 9/24/2002: Any changes in this function may require a change
436: # in lonnavmaps::resource::getDateStatus.
437: sub check_access {
438: my ($id,$symb) = @_;
439: my $date ='';
440: my $status;
441: my $datemsg = '';
442: my $lastdate = '';
443: my $type;
444: my $passed;
445:
446: if ($env{'request.state'} eq "construct") {
447: if ($env{'form.problemstate'}) {
448: if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
449: if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct'
450: && &hide_problem_status())) {
451: return ('CANNOT_ANSWER',
452: &mt('is in this state due to author settings.'));
453: }
454: } else {
455: return ($env{'form.problemstate'},
456: &mt('is in this state due to author settings.'));
457: }
458: }
459: &Apache::lonxml::debug("in construction ignoring dates");
460: $status='CAN_ANSWER';
461: $datemsg=&mt('is in under construction');
462: # return ($status,$datemsg);
463: }
464:
465: &Apache::lonxml::debug("checking for part :$id:");
466: &Apache::lonxml::debug("time:".time);
467:
468: unless ($symb) {
469: ($symb)=&Apache::lonnet::whichuser();
470: }
471: &Apache::lonxml::debug("symb:".$symb);
472: #if ($env{'request.state'} ne "construct" && $symb ne '') {
473: if ($env{'request.state'} ne "construct") {
474: my $idacc = &Apache::lonnet::EXT("resource.$id.acc",$symb);
475: my $allowed=&Apache::loncommon::check_ip_acc($idacc);
476: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
477: $status='INVALID_ACCESS';
478: $date=&mt("can not be accessed from your location.");
479: return($status,$date);
480: }
481: if ($env{'form.grade_imsexport'}) {
482: if (($env{'request.course.id'}) &&
483: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
484: return ('SHOW_ANSWER');
485: }
486: }
487: foreach my $temp ("opendate","duedate","answerdate") {
488: $lastdate = $date;
489: if ($temp eq 'duedate') {
490: $date = &due_date($id,$symb);
491: } else {
492: $date = &Apache::lonnet::EXT("resource.$id.$temp",$symb);
493: }
494:
495: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type",$symb);
496: if ($thistype =~ /^(con_lost|no_such_host)/ ||
497: $date =~ /^(con_lost|no_such_host)/) {
498: $status='UNAVAILABLE';
499: $date=&mt("may open later.");
500: return($status,$date);
501: }
502: if ($thistype eq 'date_interval') {
503: if ($temp eq 'opendate') {
504: $date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)-$date;
505: }
506: if ($temp eq 'answerdate') {
507: $date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)+$date;
508: }
509: }
510: &Apache::lonxml::debug("found :$date: for :$temp:");
511: if ($date eq '') {
512: $date = &mt("an unknown date"); $passed = 0;
513: } elsif ($date eq 'con_lost') {
514: $date = &mt("an indeterminate date"); $passed = 0;
515: } else {
516: if (time < $date) { $passed = 0; } else { $passed = 1; }
517: $date = &Apache::lonlocal::locallocaltime($date);
518: }
519: if (!$passed) { $type=$temp; last; }
520: }
521: &Apache::lonxml::debug("have :$type:$passed:");
522: if ($passed) {
523: $status='SHOW_ANSWER';
524: $datemsg=$date;
525: } elsif ($type eq 'opendate') {
526: $status='CLOSED';
527: $datemsg = &mt('will open on [_1]',$date);
528: } elsif ($type eq 'duedate') {
529: $status='CAN_ANSWER';
530: $datemsg = &mt('is due at [_1]',$date);
531: } elsif ($type eq 'answerdate') {
532: $status='CLOSED';
533: $datemsg = &mt('was due on [_1], and answers will be available on [_2]',
534: $lastdate,$date);
535: }
536: }
537: if ($status eq 'CAN_ANSWER' ||
538: (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
539: #check #tries, and if correct.
540: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
541: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries",$symb);
542: if ( $tries eq '' ) { $tries = '0'; }
543: if ( $maxtries eq '' &&
544: $env{'request.state'} ne 'construct') { $maxtries = '2'; }
545: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
546: # if (correct and show prob status) or excused then CANNOT_ANSWER
547: if ( ($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/)
548: && (&show_problem_status()) ) {
549: if (($Apache::lonhomework::history{"resource.$id.awarded"} >= 1) ||
550: (&Apache::lonnet::EXT("resource.$id.retrypartial",$symb) !~/^1|on|yes$/i)) {
551: $status = 'CANNOT_ANSWER';
552: }
553: } elsif ($Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
554: $status = 'CANNOT_ANSWER';
555: }
556: if ($status eq 'CANNOT_ANSWER'
557: && &show_answer_problem_status()) {
558: $status = 'SHOW_ANSWER';
559: }
560: }
561: if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
562: my @interval=&Apache::lonnet::EXT("resource.$id.interval",$symb);
563: &Apache::lonxml::debug("looking for interval @interval");
564: if ($interval[0]) {
565: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
566: &Apache::lonxml::debug("looking for accesstime $first_access");
567: if (!$first_access) {
568: $status='NOT_YET_VIEWED';
569: my $due_date = &due_date($id,$symb);
570: my $seconds_left = $due_date - time;
571: if ($seconds_left > $interval[0] || $due_date eq '') {
572: $seconds_left = $interval[0];
573: }
574: $datemsg=&seconds_to_human_length($seconds_left);
575: }
576: }
577: }
578:
579: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
580: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
581: # return ('UNCHECKEDOUT','needs to be checked out');
582: #}
583:
584: &Apache::lonxml::debug("sending back :$status:$datemsg:");
585: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
586: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
587: $status='CAN_ANSWER';
588: $datemsg=&mt('is closed but you are allowed to view it');
589: }
590:
591: return ($status,$datemsg);
592: }
593: # this should work exactly like the copy in lonnavmaps.pm
594: sub due_date {
595: my ($part_id,$symb,$udom,$uname)=@_;
596: my $date;
597: my @interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
598: $udom,$uname);
599: &Apache::lonxml::debug("looking for interval $part_id $symb @interval");
600: my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
601: $udom,$uname);
602: &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
603: if ($interval[0] =~ /\d+/) {
604: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
605: &Apache::lonxml::debug("looking for first_access $first_access ($interval[1])");
606: if (defined($first_access)) {
607: my $interval = $first_access+$interval[0];
608: $date = (!$due_date || $interval < $due_date) ? $interval
609: : $due_date;
610: } else {
611: $date = $due_date;
612: }
613: } else {
614: $date = $due_date;
615: }
616: return $date;
617: }
618:
619: sub seconds_to_human_length {
620: my ($length)=@_;
621:
622: my $seconds=$length%60; $length=int($length/60);
623: my $minutes=$length%60; $length=int($length/60);
624: my $hours=$length%24; $length=int($length/24);
625: my $days=$length;
626:
627: my $timestr;
628: if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
629: if ($hours > 0) { $timestr.=($timestr?", ":"").
630: &mt('[quant,_1,hour]',$hours); }
631: if ($minutes > 0) { $timestr.=($timestr?", ":"").
632: &mt('[quant,_1,minute]',$minutes); }
633: if ($seconds > 0) { $timestr.=($timestr?", ":"").
634: &mt('[quant,_1,second]',$seconds); }
635: return $timestr;
636: }
637:
638: sub showhash {
639: my (%hash) = @_;
640: &showhashsubset(\%hash,'.');
641: return '';
642: }
643:
644: sub showarray {
645: my ($array)=@_;
646: my $string="(";
647: foreach my $elm (@{ $array }) {
648: if (ref($elm) eq 'ARRAY') {
649: $string.=&showarray($elm);
650: } elsif (ref($elm) eq 'HASH') {
651: $string.= "HASH --- \n<br />";
652: $string.= &showhashsubset($elm,'.');
653: } else {
654: $string.="$elm,"
655: }
656: }
657: chop($string);
658: $string.=")";
659: return $string;
660: }
661:
662: sub showhashsubset {
663: my ($hash,$keyre) = @_;
664: my $resultkey;
665: foreach $resultkey (sort(keys(%$hash))) {
666: if ($resultkey !~ /$keyre/) { next; }
667: if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
668: &Apache::lonxml::debug("$resultkey ---- ".
669: &showarray($$hash{$resultkey}));
670: } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
671: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
672: &showhashsubset($$hash{$resultkey},'.');
673: } else {
674: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
675: }
676: }
677: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
678: return '';
679: }
680:
681: sub setuppermissions {
682: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
683: unless ($Apache::lonhomework::browse eq 'F') {
684: $Apache::lonhomework::browse=&Apache::lonnet::allowed('bro',$env{'request.filename'});
685: }
686: my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
687: if (! $viewgrades &&
688: exists($env{'request.course.sec'}) &&
689: $env{'request.course.sec'} !~ /^\s*$/) {
690: $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
691: '/'.$env{'request.course.sec'});
692: }
693: $Apache::lonhomework::viewgrades = $viewgrades;
694:
695: if ($Apache::lonhomework::browse eq 'F' &&
696: $env{'form.devalidatecourseresdata'} eq 'on') {
697: my (undef,$courseid) = &Apache::lonnet::whichuser();
698: &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
699: $env{"course.$courseid.domain"});
700: }
701:
702: my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
703: if (! $modifygrades &&
704: exists($env{'request.course.sec'}) &&
705: $env{'request.course.sec'} !~ /^\s*$/) {
706: $modifygrades =
707: &Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
708: '/'.$env{'request.course.sec'});
709: }
710: $Apache::lonhomework::modifygrades = $modifygrades;
711:
712: my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'});
713: if (! $queuegrade &&
714: exists($env{'request.course.sec'}) &&
715: $env{'request.course.sec'} !~ /^\s*$/) {
716: $queuegrade =
717: &Apache::lonnet::allowed('qgr',$env{'request.course.id'}.
718: '/'.$env{'request.course.sec'});
719: }
720: $Apache::lonhomework::queuegrade = $queuegrade;
721: return '';
722: }
723:
724: sub unset_permissions {
725: undef($Apache::lonhomework::queuegrade);
726: undef($Apache::lonhomework::modifygrades);
727: undef($Apache::lonhomework::viewgrades);
728: undef($Apache::lonhomework::browse);
729: }
730:
731: sub setupheader {
732: my $request=$_[0];
733: &Apache::loncommon::content_type($request,'text/html');
734: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
735: &Apache::loncommon::no_cache($request);
736: }
737: # $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
738: # 'lastrevisiondate'));
739: $request->send_http_header;
740: return OK if $request->header_only;
741: return ''
742: }
743:
744: sub handle_save_or_undo {
745: my ($request,$problem,$result,$getobjref) = @_;
746:
747: my $file = &Apache::lonnet::filelocation("",$request->uri);
748: my $filebak =$file.".bak";
749: my $filetmp =$file.".tmp";
750: my $error=0;
751: if (($env{'form.problemmode'} eq 'undo') || ($env{'form.problemmode'} eq 'undoxml')) {
752: my $error=0;
753: if (!&File::Copy::copy($file,$filetmp)) { $error=1; }
754: if ((!$error) && (!&File::Copy::copy($filebak,$file))) { $error=1; }
755: if ((!$error) && (!&File::Copy::move($filetmp,$filebak))) { $error=1; }
756: if (!$error) {
757: &Apache::lonxml::info("<p><b>".
758: &mt("Undid changes, Switched [_1] and [_2]",
759: '<span class="LC_filename">'.$filebak.
760: '</span>',
761: '<span class="LC_filename">'.$file.
762: '</span>')."</b></p>");
763: } else {
764: &Apache::lonxml::info("<p><span class=\"LC_error\">".
765: &mt("Unable to undo, unable to switch [_1] and [_2]",
766: '<span class="LC_filename">'.
767: $filebak.'</span>',
768: '<span class="LC_filename">'.
769: $file.'</span>')."</span></p>");
770: $error=1;
771: }
772: } else {
773: &Apache::lonnet::correct_line_ends($result);
774:
775: my $fs=Apache::File->new(">$filebak");
776: if (defined($fs)) {
777: print $fs $$problem;
778: } else {
779: &Apache::lonxml::info("<span class=\"LC_error\">".
780: &mt("Unable to make backup [_1]",
781: '<span class="LC_filename">'.
782: $filebak.'</span>')."</span>");
783: $error=2;
784: }
785: my $fh=Apache::File->new(">$file");
786: if (defined($fh)) {
787: print $fh $$result;
788: if (ref($getobjref) eq 'SCALAR') {
789: if ($file =~ m{([^/]+)\.(html?)$}) {
790: my $fname = $1;
791: my $ext = $2;
792: my $path = $file;
793: $path =~ s/\Q$fname\E\.\Q$ext\E$//;
794: my (%allfiles,%codebase);
795: &Apache::lonnet::extract_embedded_items($file,\%allfiles,
796: \%codebase,$result);
797: if (keys(%allfiles) > 0) {
798: my $url = $request->uri;
799: my $state = <<STATE;
800: <input type="hidden" name="action" value="upload_embedded" />
801: <input type="hidden" name="url" value="$url" />
802: STATE
803: $$getobjref = "<h3>".&mt("Reference Warning")."</h3>".
804: "<p>".&mt("Completed upload of the file. This file contained references to other files.")."</p>".
805: "<p>".&mt("Please select the locations from which the referenced files are to be uploaded.")."</p>".
806: &Apache::loncommon::ask_for_embedded_content($url,$state,\%allfiles,\%codebase,
807: {'error_on_invalid_names' => 1,
808: 'ignore_remote_references' => 1,});
809: }
810: }
811: }
812: } else {
813: &Apache::lonxml::info('<span class="LC_error">'.
814: &mt("Unable to write to [_1]",
815: '<span class="LC_filename">'.
816: $file.'</span>').
817: '</span>');
818: $error|=4;
819: }
820: }
821: return $error;
822: }
823:
824: sub analyze_header {
825: my ($request) = @_;
826: my $js = &Apache::structuretags::setmode_javascript();
827:
828: # Breadcrumbs
829: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
830: 'text' => 'Authoring Space'},
831: {'href' => '',
832: 'text' => 'Problem Testing'},
833: {'href' => '',
834: 'text' => 'Analyzing a problem'}];
835:
836: my $result =
837: &Apache::loncommon::start_page('Analyzing a problem',
838: $js,
839: {'bread_crumbs' => $brcrum,})
840: .&Apache::loncommon::head_subbox(
841: &Apache::loncommon::CSTR_pageheader());
842: $result .=
843: '<form name="lonhomework" method="post" action="'.
844: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
845: '<input type="hidden" name="problemmode" value="'.
846: $env{'form.problemmode'}.'" />'.
847: &Apache::structuretags::remember_problem_state().'
848: <div class="LC_edit_problem_analyze_header">
849: <input type="button" name="submitmode" value="'.&mt("EditXML").'" '.
850: 'onclick="javascript:setmode(this.form,'."'editxml'".')" />
851: <input type="button" name="submitmode" value="'.&mt('Edit').'" '.
852: 'onclick="javascript:setmode(this.form,'."'edit'".')" />
853: <hr />
854: <input type="button" name="submitmode" value="'.&mt("View").'" '.
855: 'onclick="javascript:setmode(this.form,'."'view'".')" />
856: <hr />
857: </div>'
858: .&Apache::lonxml::message_location().
859: '</form>';
860: &Apache::lonxml::add_messages(\$result);
861: $request->print($result);
862: $request->rflush();
863: }
864:
865: sub analyze_footer {
866: my ($request) = @_;
867: $request->print(&Apache::loncommon::end_page());
868: $request->rflush();
869: }
870:
871: sub analyze {
872: my ($request,$file) = @_;
873: &Apache::lonxml::debug("Analyze");
874: my $result;
875: my %overall;
876: my %seedexample;
877: my %allparts;
878: my $rndseed=$env{'form.rndseed'};
879: &analyze_header($request);
880: my %prog_state=
881: &Apache::lonhtmlcommon::Create_PrgWin($request,$env{'form.numtoanalyze'});
882: for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
883: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,'last problem');
884: if (&Apache::loncommon::connection_aborted($request)) { return; }
885: my $thisseed=$i+$rndseed;
886: my $subresult=&Apache::lonnet::ssi($request->uri,
887: ('grade_target' => 'analyze'),
888: ('rndseed' => $thisseed));
889: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
890: my %analyze=&Apache::lonnet::str2hash($subresult);
891: my @parts;
892: if (ref($analyze{'parts'}) eq 'ARRAY') {
893: @parts=@{ $analyze{'parts'} };
894: }
895: foreach my $part (@parts) {
896: if (!exists($allparts{$part})) {$allparts{$part}=1;};
897: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
898: $analyze{$part.'.type'} eq 'stringresponse' ||
899: $analyze{$part.'.type'} eq 'formularesponse' ) {
900: foreach my $name (keys(%{ $analyze{$part.'.answer'} })) {
901: my $i=0;
902: foreach my $answer_part (@{ $analyze{$part.'.answer'}{$name} }) {
903: push( @{ $overall{$part.'.answer'}[$i] },
904: $answer_part);
905: my $concatanswer= join("\0",@{ $answer_part });
906: if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
907: $answer_part = ['<span class="LC_error">'.&mt('Error').'</span>'];
908: }
909: $seedexample{join("\0",$part,$i,@{$answer_part})}=
910: $thisseed;
911: $i++;
912: }
913: }
914: if (!keys(%{ $analyze{$part.'.answer'} })) {
915: my $answer_part =
916: ['<span class="LC_error">'.&mt('Error').'</span>'];
917: $seedexample{join("\0",$part,0,@{$answer_part})}=
918: $thisseed;
919: push( @{ $overall{$part.'.answer'}[0] },
920: $answer_part);
921: }
922: }
923: }
924: }
925: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,&mt('Analyzing Results'));
926: $request->print('<hr />'
927: .'<h3>'
928: .&mt('List of possible answers')
929: .'</h3>'
930: );
931: foreach my $part (sort(keys(%allparts))) {
932: if ((ref($overall{$part.'.answer'}) eq 'ARRAY') &&
933: (@{$overall{$part.'.answer'}} > 0)) {
934: for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
935: my $num_cols=scalar(@{ $overall{$part.'.answer'}[$i][0] });
936: $request->print(&Apache::loncommon::start_data_table()
937: .&Apache::loncommon::start_data_table_header_row()
938: .'<th colspan="'.($num_cols+1).'">'
939: .&mt('Part').' '.$part
940: );
941: if (scalar(@{ $overall{$part.'.answer'} }) > 1) {
942: $request->print(' '.&mt('Answer [_1]',$i+1));
943: }
944: $request->print('</th>'
945: .&Apache::loncommon::end_data_table_header_row()
946: );
947: my %frequency;
948: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) {
949: $frequency{join("\0",@{ $answer })}++;
950: }
951: $request->print(&Apache::loncommon::start_data_table_header_row()
952: .'<th colspan="'.($num_cols).'">'.&mt('Answer').'</th>'
953: .'<th>'.&mt('Frequency').'<br />'
954: .'('.&mt('click for example').')</th>'
955: .&Apache::loncommon::end_data_table_header_row()
956: );
957: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
958: $request->print(&Apache::loncommon::start_data_table_row()
959: .'<td>'
960: .join('</td><td>',split("\0",$answer))
961: .'</td>'
962: .'<td>'
963: .'<a href="'.$request->uri.'?rndseed='.$seedexample{join("\0",$part,$i,$answer)}.'">'.$frequency{$answer}.'</a>'
964: .'</td>'
965: .&Apache::loncommon::end_data_table_row()
966: );
967: }
968: $request->print(&Apache::loncommon::end_data_table());
969: }
970: } else {
971: $request->print('<p class="LC_warning">'
972: .&mt('Response [_1] is not analyzable at this time.',$part)
973: .'</p>'
974: );
975: }
976: }
977: if (scalar(keys(%allparts)) == 0 ) {
978: $request->print('<p class="LC_warning">'
979: .&mt('Found no analyzable responses in this problem.'
980: .' Currently only Numerical, Formula and String response styles are supported.')
981: .'</p>'
982: );
983: }
984: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
985: &analyze_footer($request);
986: &Apache::lonhomework::showhash(%overall);
987: return $result;
988: }
989:
990: {
991: my $show_problem_status;
992: sub reset_show_problem_status {
993: undef($show_problem_status);
994: }
995:
996: sub set_show_problem_status {
997: my ($new_status) = @_;
998: $show_problem_status = lc($new_status);
999: }
1000:
1001: sub hide_problem_status {
1002: return ($show_problem_status eq 'no'
1003: || $show_problem_status eq 'no_feedback_ever');
1004: }
1005:
1006: sub show_problem_status {
1007: return ($show_problem_status eq 'yes'
1008: || $show_problem_status eq 'answer'
1009: || $show_problem_status eq '');
1010: }
1011:
1012: sub show_some_problem_status {
1013: return ($show_problem_status eq 'no');
1014: }
1015:
1016: sub show_no_problem_status {
1017: return ($show_problem_status eq 'no_feedback_ever');
1018: }
1019:
1020: sub show_answer_problem_status {
1021: return ($show_problem_status eq 'answer');
1022: }
1023: }
1024:
1025: sub editxmlmode {
1026: my ($request,$file) = @_;
1027: my $result;
1028: my $problem=&Apache::lonnet::getfile($file);
1029: if ($problem eq -1) {
1030: &Apache::lonxml::error(
1031: '<p class="LC_error">'
1032: .&mt('Unable to find [_1]',
1033: '<span class="LC_filename">'.$file.'</span>')
1034: .'</p>');
1035:
1036: $problem='';
1037: }
1038: if (($env{'form.problemmode'} eq 'saveeditxml') ||
1039: ($env{'form.problemmode'} eq 'saveviewxml') ||
1040: ($env{'form.problemmode'} eq 'undoxml')) {
1041: my $error=&handle_save_or_undo($request,\$problem,
1042: \$env{'form.editxmltext'});
1043: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
1044: }
1045: &Apache::lonhomework::showhashsubset(\%env,'^form');
1046: if ($env{'form.problemmode'} eq 'saveviewxml') {
1047: &Apache::lonhomework::showhashsubset(\%env,'^form');
1048: $env{'form.problemmode'}='view';
1049: &renderpage($request,$file);
1050: } else {
1051: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1052: if ($cols > 80) { $cols = 80; }
1053: if ($cols < 70) { $cols = 70; }
1054: if ($rows < 20) { $rows = 20; }
1055: my $js =
1056: &Apache::edit::js_change_detection().
1057: &Apache::loncommon::resize_textarea_js().
1058: &Apache::structuretags::setmode_javascript().
1059: &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
1060:
1061: # Breadcrumbs
1062: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1063: 'text' => 'Authoring Space'},
1064: {'href' => '',
1065: 'text' => 'Problem Editing'}];
1066:
1067: my $start_page =
1068: &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
1069: {'no_auto_mt_title' => 1,
1070: 'only_body' => 0,
1071: 'add_entries' => {
1072: 'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
1073: 'onload' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
1074: },
1075: 'bread_crumbs' => $brcrum,
1076: });
1077:
1078: $result=$start_page
1079: .&Apache::loncommon::head_subbox(
1080: &Apache::loncommon::CSTR_pageheader());
1081: $result.=&renderpage($request,$file,['no_output_web'],1).
1082: '<form '.&Apache::edit::form_change_detection().' name="lonhomework" method="post" action="'.
1083: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1084: &Apache::structuretags::remember_problem_state().'
1085: <div class="LC_edit_problem_header">
1086: <div class="LC_edit_problem_header_title">'.
1087: &mt('Problem Editing').' '.&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').
1088: '</div><div class="LC_edit_actionbar" id="actionbar">';
1089:
1090: $result.='<input type="hidden" name="problemmode" value="saveedit" />'.
1091: &Apache::structuretags::problem_edit_buttons('editxml');
1092: $result.='<div>';
1093:
1094: $result .= '<ol class="LC_primary_menu" style="display:inline-block;font-size:90%;vertical-align:middle;">';
1095:
1096: unless ($env{'environment.nocodemirror'}) {
1097: # dropdown menus
1098: $result .= Apache::lonmenu::create_submenu("#", "",
1099: &mt("Problem Templates"), template_dropdown_datastructure());
1100:
1101: $result .= Apache::lonmenu::create_submenu("#", "",
1102: &mt("Response Types"), responseblock_dropdown_datastructure());
1103:
1104: $result .= Apache::lonmenu::create_submenu("#", "",
1105: &mt("Conditional Blocks"), conditional_scripting_datastructure());
1106:
1107: $result .= Apache::lonmenu::create_submenu("#", "",
1108: &mt("Miscellaneous"), misc_datastructure());
1109: }
1110:
1111: $result .= Apache::lonmenu::create_submenu("#", "",
1112: &mt("Help") . ' <img src="/adm/help/help.png" alt="' . &mt("Help") .
1113: '" style="vertical-align:text-bottom; height: auto; margin:0; "/>',
1114: helpmenu_datastructure(),"");
1115:
1116: $result.="</ol></div>";
1117:
1118: $result .= '</div></div>' .
1119: &Apache::lonxml::message_location() .
1120: &Apache::loncommon::xmleditor_js() .
1121: '<textarea ' . &Apache::edit::element_change_detection() .
1122: ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" ' .
1123: ' name="editxmltext" id="LC_editxmltext">' .
1124: &HTML::Entities::encode($problem,'<>&"') .
1125: '</textarea> <div id="LC_aftertextarea"> </div> </form>';
1126:
1127: my $resource = $env{'request.ambiguous'};
1128: unless($env{'environment.nocodemirror'}){
1129: $result .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined-xml.css">
1130: <script src="/adm/codemirror/codemirror-compressed-xml.js"></script>
1131: <script>
1132: CodeMirror.defineMode("mixedmode", function(config) {
1133: return CodeMirror.multiplexingMode(
1134: CodeMirror.getMode(config, "xml"),
1135: {
1136: open: "\<script type=\"loncapa/perl\"\>", close: "\</script\>",
1137: mode: CodeMirror.getMode(config, "perl"),
1138: delimStyle: "tag",
1139: }
1140: );
1141: });
1142: var cm = CodeMirror.fromTextArea(document.getElementById("LC_editxmltext"),
1143: {
1144: mode: "mixedmode",
1145: lineWrapping: true,
1146: lineNumbers: true,
1147: tabSize: 4,
1148: indentUnit: 4,
1149:
1150: autoCloseTags: true,
1151: autoCloseBrackets: true,
1152: height: "auto",
1153: styleActiveLine: true,
1154:
1155: extraKeys: {
1156: "Tab": "indentMore",
1157: "Shift-Tab": "indentLess",
1158: }
1159: });
1160: restoreScrollPosition("'.$resource.'");
1161: </script>';
1162: }
1163:
1164: $result .= &Apache::loncommon::end_page();
1165: &Apache::lonxml::add_messages(\$result);
1166: $request->print($result);
1167: }
1168: return '';
1169: }
1170:
1171: #
1172: # Render the page in whatever target desired.
1173: #
1174: sub renderpage {
1175: my ($request,$file,$targets,$return_string) = @_;
1176:
1177: my @targets = @{$targets || [&get_target()]};
1178: &Apache::lonhomework::showhashsubset(\%env,'form.');
1179: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1180:
1181: my $overall_result;
1182: foreach my $target (@targets) {
1183: # FIXME need to do something intelligent when a problem goes
1184: # from viewable to not viewable due to map conditions
1185: #&setuppermissions();
1186: #if ( $Apache::lonhomework::browse ne '2'
1187: # && $Apache::lonhomework::browse ne 'F' ) {
1188: # $request->print(" You most likely shouldn't see me.");
1189: #}
1190: #my $t0 = [&gettimeofday()];
1191: my $output=1;
1192: if ($target eq 'no_output_web') {
1193: $target = 'web'; $output=0;
1194: }
1195: my $problem=&Apache::lonnet::getfile($file);
1196: my $result;
1197: if ($problem eq -1) {
1198: $problem='';
1199: my $filename=(split('/',$file))[-1];
1200: my $error =
1201: '<p class="LC_error">'
1202: .&mt('Unable to find [_1]',
1203: '<span class="LC_filename">'.$filename.'</span>')
1204: ."</p>";
1205: $result.=
1206: &Apache::loncommon::simple_error_page($request,'Not available',
1207: $error,{'no_auto_mt_msg' => 1});
1208: return;
1209: }
1210:
1211: my %mystyle;
1212: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
1213: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
1214: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
1215:
1216: &Apache::lonxml::debug("Should be parsing now");
1217: $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
1218: &setup_vars($target),%mystyle);
1219: &finished_parsing();
1220: if (!$output) { $result = ''; }
1221: #$request->print("Result follows:");
1222: if ($target eq 'modified') {
1223: &handle_save_or_undo($request,\$problem,\$result);
1224: } else {
1225: if ($target eq 'analyze') {
1226: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
1227: undef(%Apache::lonhomework::analyze);
1228: }
1229: #my $td=&tv_interval($t0);
1230: #if ( $Apache::lonxml::debug) {
1231: #$result =~ s:</body>::;
1232: #$result.="<br />Spent $td seconds processing target $target\n</body>";
1233: #}
1234: # $request->print($result);
1235: $overall_result.=$result;
1236: # $request->rflush();
1237: }
1238: #$request->print(":Result ends");
1239: #my $td=&tv_interval($t0);
1240: }
1241: if (!$return_string) {
1242: &Apache::lonxml::add_messages(\$overall_result);
1243: $request->print($overall_result);
1244: $request->rflush();
1245: } else {
1246: return $overall_result;
1247: }
1248: }
1249:
1250: sub finished_parsing {
1251: undef($Apache::lonhomework::parsing_a_problem);
1252: undef($Apache::lonhomework::parsing_a_task);
1253: }
1254:
1255: # function extracted from get_template_html
1256: # returns "key" -> list
1257: # key: path of template
1258: # value 1: title
1259: # value 2: category
1260: # value 3: name of help topic ???
1261: sub get_template_list{
1262: my ($extension) = @_;
1263:
1264: my @files = glob($Apache::lonnet::perlvar{'lonIncludes'}.
1265: '/templates/*.'.$extension);
1266: @files = map {[$_,&mt(&Apache::lonnet::metadata($_, 'title')),
1267: (&Apache::lonnet::metadata($_, 'category')?&mt(&Apache::lonnet::metadata($_, 'category')):&mt('Miscellaneous')),
1268: &mt(&Apache::lonnet::metadata($_, 'help'))]} (@files);
1269: @files = sort {$a->[2].$a->[1] cmp $b->[2].$b->[1]} (@files);
1270: return @files;
1271: }
1272:
1273: sub get_template_html {
1274: my ($extension) = @_;
1275: my $result;
1276: my @allnames;
1277: &Apache::lonxml::debug("Looking for :$extension:");
1278: my $glob_extension = $extension;
1279: if ($extension eq 'survey' || $extension eq 'exam') {
1280: $glob_extension = 'problem';
1281: }
1282: my @files = &get_template_list($extension);
1283: my ($midpoint,$seconddiv,$numfiles);
1284: my @noexamplelink = ('blank.problem','blank.library','script.library');
1285: $numfiles = 0;
1286: foreach my $file (@files) {
1287: next if ($file->[1] !~ /\S/);
1288: $numfiles ++;
1289: }
1290: if ($numfiles > 0) {
1291: $result = '<div class="LC_left_float">';
1292: $midpoint = int($numfiles/2);
1293: if ($numfiles%2) {
1294: $midpoint ++;
1295: }
1296: }
1297: my $count = 0;
1298: my $currentcategory='';
1299: my $first = 1;
1300: my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
1301: foreach my $file (@files) {
1302: next if ($file->[1] !~ /\S/);
1303: if ($file->[2] ne $currentcategory) {
1304: $currentcategory=$file->[2];
1305: if ((!$seconddiv) && ($count >= $midpoint)) {
1306: $result .= '</div></div>'."\n".'<div class="LC_left_float">'."\n";
1307: $seconddiv = 1;
1308: } elsif (!$first) {
1309: $result.='</div>'."\n";
1310: } else {
1311: $first = 0;
1312: }
1313: $result.= '<div class="LC_Box">'."\n"
1314: .'<h3 class="LC_hcell">'.$currentcategory.'</h3>'."\n";
1315: $count++;
1316: }
1317: $result .=
1318: '<label><input type="radio" name="template" value="'.$file->[0].'" />'.
1319: $file->[1].'</label>';
1320: if ($file->[3]) {
1321: $result.=&Apache::loncommon::help_open_topic($file->[3]);
1322: }
1323: # Provide example link
1324: my $filename=$file->[0];
1325: $filename=~s{^\Q$londocroot\E}{};
1326: if (!(grep($filename =~ /\Q$_\E$/,@noexamplelink))) {
1327: $result .= ' <span class="LC_fontsize_small">'
1328: .&Apache::loncommon::modal_link(
1329: $filename.'?inhibitmenu=yes',&mt('Example'),600,420,'sample')
1330: .'</span>';
1331: }
1332: $result .= '<br />'."\n";
1333: $count ++;
1334: }
1335: if ($numfiles > 0) {
1336: $result .= '</div></div>'."\n".'<div class="LC_clear_float_footer"></div>'."\n";
1337: }
1338: return $result;
1339: }
1340:
1341: sub newproblem {
1342: my ($request) = @_;
1343:
1344: if ($env{'form.mode'} eq 'blank'){
1345: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1346: &File::Copy::copy('/home/httpd/html/res/adm/includes/templates/blank.problem',$dest);
1347: &renderpage($request,$dest);
1348: return;
1349: }
1350: if ($env{'form.template'}) {
1351: my $file = $env{'form.template'};
1352: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1353: &File::Copy::copy($file,$dest);
1354: &renderpage($request,$dest);
1355: return;
1356: }
1357:
1358: my ($extension) = ($request->uri =~ m/\.(\w+)$/);
1359: &Apache::lonxml::debug("Looking for :$extension:");
1360: my $templatelist=&get_template_html($extension);
1361: if ($env{'form.newfile'} && !$templatelist) {
1362: # no templates found
1363: my $templatefilename =
1364: $request->dir_config('lonIncludes').'/templates/blank.'.$extension;
1365: &Apache::lonxml::debug("$templatefilename");
1366: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1367: &File::Copy::copy($templatefilename,$dest);
1368: &renderpage($request,$dest);
1369: } else {
1370: my $url=&HTML::Entities::encode($request->uri,'<>&"');
1371: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1372: my $errormsg;
1373: my $instructions;
1374: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1375: 'text' => 'Authoring Space'},
1376: {'href' => '',
1377: 'text' => "Create New $extension"}];
1378: my $start_page =
1379: &Apache::loncommon::start_page("Create New $extension",
1380: undef,
1381: {'bread_crumbs' => $brcrum,});
1382: $request->print(
1383: $start_page
1384: .&Apache::loncommon::head_subbox(
1385: &Apache::loncommon::CSTR_pageheader())
1386: .'<h1>'.&mt("Creating a new $extension resource.")."</h1>
1387: $errormsg
1388: ".&mt("The requested file [_1] currently does not exist.",
1389: '<span class="LC_filename">'.$url.'</span>').'
1390: <p class="LC_info">
1391: '.&mt("To create a new $extension, select a template from the".
1392: " list below. Then click on the \"Create $extension\" button.").'
1393: </p><div><form action="'.$url.'" method="post">');
1394:
1395: if (defined($templatelist)) {
1396: $request->print($templatelist);
1397: }
1398: $request->print('<br /><input type="submit" name="newfile" value="'.
1399: &mt("Create $extension").'" />');
1400: $request->print('</form></div>'.&Apache::loncommon::end_page());
1401: }
1402: return;
1403: }
1404:
1405: sub update_construct_style {
1406: if ($env{'request.state'} eq "construct"
1407: && $env{'form.problemmode'} eq 'view'
1408: && defined($env{'form.submitted'})
1409: && !defined($env{'form.resetdata'})
1410: && !defined($env{'form.newrandomization'})) {
1411: if ((!$env{'form.style_file'} && $env{'construct.style'})
1412: ||$env{'form.clear_style_file'}) {
1413: &Apache::lonnet::delenv('construct.style');
1414: } elsif ($env{'form.style_file'}
1415: && $env{'construct.style'} ne $env{'form.style_file'}) {
1416: &Apache::lonnet::appenv({'construct.style' =>
1417: $env{'form.style_file'}});
1418: }
1419: }
1420: }
1421:
1422: #
1423: # Sets interval for current user so time left will be zero, either for the entire folder
1424: # containing the current resource, or just the resource, depending on value of first item
1425: # in interval array retrieved from EXT("resource.0.interval");
1426: #
1427: sub zero_timer {
1428: my ($symb) = @_;
1429: my ($hastimeleft,$first_access,$now);
1430: my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb);
1431: if (@interval > 1) {
1432: if ($interval[1] eq 'course') {
1433: return;
1434: } else {
1435: my $now = time;
1436: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
1437: if ($first_access > 0) {
1438: my ($timelimit) = split(/_/,$interval[0]);
1439: if ($first_access+$timelimit > $now) {
1440: my $done_time = $now - $first_access;
1441: my $snum = 1;
1442: if ($interval[1] eq 'map') {
1443: $snum = 2;
1444: }
1445: my $result =
1446: &Apache::lonparmset::storeparm_by_symb_inner($symb,'0_interval',
1447: $snum,$done_time,
1448: 'date_interval',
1449: $env{'user.name'},
1450: $env{'user.domain'});
1451: # Record action in "User Notes"
1452: &Apache::lonmsg::store_instructor_comment(
1453: 'Pressed Done button for symb:<br />'.$symb,
1454: $env{'user.name'}, $env{'user.domain'});
1455: return $result;
1456: }
1457: }
1458: }
1459: }
1460: return;
1461: }
1462:
1463: sub handler {
1464: #my $t0 = [&gettimeofday()];
1465: my $request=$_[0];
1466:
1467: $Apache::lonxml::request=$request;
1468: $Apache::lonxml::debug=$env{'user.debug'};
1469: $env{'request.uri'}=$request->uri;
1470: &setuppermissions();
1471:
1472: my $file=&Apache::lonnet::filelocation("",$request->uri);
1473:
1474: #check if we know where we are
1475: if ($env{'request.course.fn'} && !&Apache::lonnet::symbread('','',1,1)) {
1476: # if we are browsing we might not be able to know where we are
1477: if ($Apache::lonhomework::browse ne 'F' &&
1478: $env{'request.state'} ne "construct") {
1479: #should know where we are, so ask
1480: &unset_permissions();
1481: $request->internal_redirect('/adm/ambiguous');
1482: return OK;
1483: }
1484: }
1485: if (&setupheader($request)) {
1486: &unset_permissions();
1487: return OK;
1488: }
1489:
1490: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
1491: &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
1492: my ($symb) = &Apache::lonnet::whichuser();
1493: &Apache::lonxml::debug('symb is '.$symb);
1494: if ($env{'request.state'} eq "construct") {
1495: if ( -e $file ) {
1496: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1497: ['problemmode']);
1498: if (!(defined $env{'form.problemmode'})) {
1499: #first visit to problem in construction space
1500: $env{'form.problemmode'}= 'view';
1501: &renderpage($request,$file);
1502: } elsif (($env{'form.problemmode'} eq 'editxml') ||
1503: ($env{'form.problemmode'} eq 'saveeditxml') ||
1504: ($env{'form.problemmode'} eq 'saveviewxml') ||
1505: ($env{'form.problemmode'} eq 'undoxml')) {
1506: &editxmlmode($request,$file);
1507: } elsif ($env{'form.problemmode'} eq 'calcanswers') {
1508: &analyze($request,$file);
1509: } else {
1510: &update_construct_style();
1511: &renderpage($request,$file);
1512: }
1513: } else {
1514: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1515: ['mode']);
1516: # requested file doesn't exist in contruction space
1517: &newproblem($request);
1518: }
1519: } else {
1520: # Set the event timer to zero if the "done button" was clicked. The button is
1521: # part of the doneButton form created in lonmenu.pm
1522: if ($symb && $env{'form.LC_interval_done'} eq 'true') {
1523: &zero_timer($symb);
1524: undef($env{'form.LC_interval_done'});
1525: }
1526: # just render the page normally outside of construction space
1527: &Apache::lonxml::debug("not construct");
1528: &renderpage($request,$file);
1529: }
1530: #my $td=&tv_interval($t0);
1531: #&Apache::lonxml::debug("Spent $td seconds processing");
1532: # always turn off debug messages
1533: $Apache::lonxml::debug=0;
1534: &unset_permissions();
1535: return OK;
1536:
1537: }
1538:
1539: sub template_dropdown_datastructure {
1540: # gathering the all templates and their path, title, category and help topic
1541: my @templates = get_template_list('problem');
1542: # template category => title
1543: my %tmplthash = ();
1544: # template title => path
1545: my %tmpltcontent = ();
1546:
1547: foreach my $template (@templates){
1548: # put in hash if the template is not empty
1549: unless ($template->[1] eq ''){
1550: push(@{$tmplthash{$template->[2]}}, $template->[1]);
1551: push(@{$tmpltcontent{$template->[1]}},$template->[0]);
1552: }
1553: }
1554:
1555: my $catList = [];
1556: foreach my $cat (sort keys %tmplthash) {
1557: my $catItems = [];
1558: foreach my $title (sort @{$tmplthash{$cat}}) {
1559: my $path = $tmpltcontent{$title}->[0];
1560: my $code;
1561: open(FH, "<$path");
1562: while(<FH>){
1563: $code.= $_ unless $_ =~ /(<problem>)|(<\/problem>)/;
1564: }
1565: close(FH);
1566:
1567: if ($code ne '') {
1568: my $href = 'javascript:insertText(\'' . &convert_for_js(&HTML::Entities::encode($code,'<>&"')) . '\')';
1569: my $currItem = [$href, $title, undef];
1570: push @{$catItems}, $currItem;
1571: }
1572: }
1573: push @{$catList}, [$catItems, $cat, undef];
1574: }
1575:
1576: return $catList;
1577: }
1578:
1579: sub responseblock_dropdown_datastructure {
1580:
1581: my $mathCat = [
1582: [
1583: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_formularesponse())) . "\')", &mt("Formula Response"), undef],
1584: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_functionplotresponse())) . "\')", &mt("Function Plot Response"), undef],
1585: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_mathresponse())) . "\')", &mt("Math Response"), undef],
1586: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_numericalresponse())) . "\')", &mt("Numerical Response"), undef]
1587: ],
1588: &mt("Math"),
1589: undef
1590: ];
1591:
1592: my $miscCat = [
1593: [
1594: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_imageresponse())) . "\')", &mt("Click on Image"), undef],
1595: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_customresponse())) . "\')", &mt("Custom Response"), undef],
1596: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_externalresponse())) . "\')", &mt("External Response"), undef],
1597: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_matchresponse())) . "\')", &mt("Match Two Lists"), undef],
1598: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_radiobuttonresponse())) . "\')", &mt("One out of N statements"), undef],
1599: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_optionresponse())) . "\')", &mt("Select from Options"), undef],
1600: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_rankresponse())) . "\')", &mt("Rank Values"), undef]
1601: ],
1602: &mt("Miscellaneous"),
1603: undef
1604: ];
1605:
1606: my $chemCat = [
1607: [
1608: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_reactionresponse())) . "\')", &mt("Chemical Reaction"), undef],
1609: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicresponse())) . "\')", &mt("Organic Chemical Structure"), undef]
1610: ],
1611: &mt("Chemistry"),
1612: undef
1613: ];
1614:
1615: my $textCat = [
1616: [
1617: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_stringresponse())) . "\')", &mt("String Response"), undef],
1618: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_essayresponse())) . "\')", &mt("Essay"), undef]
1619: ],
1620: &mt("Text"),
1621: undef
1622: ];
1623:
1624: return [$mathCat, $miscCat, $chemCat, $textCat];
1625: }
1626:
1627:
1628: sub conditional_scripting_datastructure {
1629: # TODO: corresponding routines should be used for the javascript:insertText parts
1630: # instead of the placeholder routine default_xml_tag with the tags
1631: # e.g. &default_xml_tag("postanswerdate") should be replaced with a routine which
1632: # returns the corresponding content for this case
1633:
1634: #TODO translated is currently temporarily here, another solution should be found where the
1635: # needed string can be retrieved
1636:
1637: my $translatedTag = '
1638: <translated>
1639: <lang which="en"></lang>
1640: <lang which="default"></lang>
1641: </translated>';
1642: return [
1643: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode($translatedTag)) . "\')", &mt("Translated Block"), undef],
1644: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("block"))) . "\')", &mt("Conditional Block"), undef],
1645: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("postanswerdate"))) . "\')", &mt("After Answer Date Block"), undef],
1646: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("preduedate"))) . "\')", &mt("Before Due Date Block"), undef],
1647: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("solved"))) . "\')", &mt("Block For After Solved"), undef],
1648: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("notsolved"))) . "\')", &mt("Block For When Not Solved"), undef]
1649: ];
1650: }
1651:
1652: sub misc_datastructure {
1653: return [
1654: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_img())) . "\')", &mt("Image"), undef],
1655: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::lonplot::insert_gnuplot())) . "\')", &mt("GNU Plot"), undef],
1656: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicstructure())) . "\')", &mt("Organic Structure"), undef],
1657: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_script())) . "\')", &mt("Script Block"), undef],
1658: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("allow"))) . "\')", &mt("File Dependencies"), undef],
1659: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("import"))) . "\')", &mt("Import a File"), undef],
1660: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::londefdef::insert_meta())) . "\')", &mt("Custom Metadata"), undef],
1661: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("part"))) . "\')", &mt("Problem Part"), undef]
1662: ];
1663: }
1664:
1665: # helper routine for the datastructure building subroutines
1666: sub default_xml_tag {
1667: my ($tag) = @_;
1668: return "\n<$tag></$tag>";
1669: }
1670:
1671:
1672: sub helpmenu_datastructure {
1673:
1674: my $width = 500;
1675: my $height = 600;
1676:
1677: my $helpers = [
1678: ['Problem_LON-CAPA_Functions', &mt('Script Functions')],
1679: ['Greek_Symbols', &mt('Greek Symbols')],
1680: ['Other_Symbols', &mt('Other Symbols')],
1681: ['Authoring_Output_Tags', &mt('Output Tags')],
1682: ['Authoring_Multilingual_Problems',
1683: &mt('How to create problems in different languages')]
1684: ];
1685:
1686: my $help_structure = [];
1687:
1688: foreach my $count (0..(scalar(@{$helpers})-1)) {
1689: my $filename = $helpers->[$count]->[0];
1690: my $title = $helpers->[$count]->[1];
1691: my $href = &HTML::Entities::encode("javascript:openMyModal('/adm/help/$filename.hlp',$width,$height,'yes');");
1692: push @{$help_structure}, [$href, $title, undef];
1693: }
1694:
1695: return $help_structure;
1696: }
1697:
1698: # we need substitution to not break javascript code
1699: sub convert_for_js {
1700: my $return = shift;
1701: $return =~ s|script|ESCAPEDSCRIPT|g;
1702: $return =~ s|\\|\\\\|g;
1703: $return =~ s|\n|\\r\\n|g;
1704: $return =~ s|'|\\'|g;
1705: $return =~ s|'|\\'|g;
1706: return $return;
1707: }
1708:
1709: 1;
1710: __END__
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