1: # The LearningOnline Network with CAPA
2: # The LON-CAPA Homework handler
3: #
4: # $Id: lonhomework.pm,v 1.356 2015/07/17 19:11:09 raeburn 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,$datemsg);
222: }
223:
224: if ($status eq 'SHOW_ANSWER' ||
225: $status eq 'CLOSED' ||
226: $status eq 'INVALID_ACCESS' ||
227: $status eq 'UNAVAILABLE') {
228: return ($status,$datemsg);
229: }
230: if ($env{'request.state'} eq "construct") {
231: return ($status,$datemsg);
232: }
233:
234: if ($type eq 'Task') {
235: my $version=$Apache::lonhomework::history{'resource.version'};
236: if ($Apache::lonhomework::history{"resource.$version.0.checkedin"} &&
237: $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') {
238: return ('SHOW_ANSWER');
239: }
240: }
241:
242: my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent",$symb);
243: my $available = &Apache::lonnet::EXT("resource.0.available",$symb);
244: my @slots= (split(':',$availablestudent),split(':',$available));
245:
246: # if (!@slots) {
247: # return ($status,$datemsg);
248: # }
249: my $slotstatus='NOT_IN_A_SLOT';
250: my ($returned_slot,$slot_name);
251: my $now = time;
252: my $num_usable_slots = 0;
253: foreach my $slot (@slots) {
254: $slot =~ s/(^\s*|\s*$)//g;
255: &Apache::lonxml::debug("getting $slot");
256: my %slot=&Apache::lonnet::get_slot($slot);
257: &Apache::lonhomework::showhash(%slot);
258: next if ($slot{'endtime'} < $now);
259: $num_usable_slots ++;
260: if ($slot{'starttime'} < $now &&
261: $slot{'endtime'} > $now &&
262: &Apache::loncommon::check_ip_acc($slot{'ip'})) {
263: &Apache::lonxml::debug("$slot is good");
264: $slotstatus='NEEDS_CHECKIN';
265: $returned_slot=\%slot;
266: $slot_name=$slot;
267: last;
268: }
269: }
270: if ($slotstatus eq 'NEEDS_CHECKIN' &&
271: &proctor_checked_in($slot_name,$returned_slot,$type)) {
272: &Apache::lonxml::debug("proctor checked in");
273: $slotstatus=$status;
274: }
275:
276: my ($is_correct,$got_grade,$checkedin);
277: if ($type eq 'Task') {
278: my $version=$Apache::lonhomework::history{'resource.0.version'};
279: $got_grade =
280: ($Apache::lonhomework::history{"resource.$version.0.status"}
281: =~ /^(?:pass|fail)$/);
282: $is_correct =
283: ($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass'
284: || $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ );
285: $checkedin =
286: $Apache::lonhomework::history{"resource.$version.0.checkedin"};
287: } elsif ($type eq 'problem') {
288: $got_grade = 1;
289: $checkedin = $Apache::lonhomework::history{"resource.0.checkedin"};
290: $is_correct =
291: ($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/);
292: }
293:
294: &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
295:
296: # no slot is currently open, and has been checked in for this version
297: # but hasn't got a grade, therefore must be awaiting a grade
298: if (!defined($slot_name)
299: && $checkedin
300: && !$got_grade) {
301: return ('WAITING_FOR_GRADE');
302: }
303:
304: # Previously used slot is no longer open, and has been checked in for this version.
305: # However, the problem is not closed, and potentially, another slot might be
306: # used to gain access to it to work on it, until the due date is reached, and the
307: # problem then becomes CLOSED. Therefore return the slotstatus -
308: # (which will be one of: NOT_IN_A_SLOT, RESERVABLE, RESERVABLE_LATER, or NOTRESERVABLE.
309: if (!defined($slot_name) && $type eq 'problem') {
310: if ($slotstatus eq 'NOT_IN_A_SLOT') {
311: if (!$num_usable_slots) {
312: if ($env{'request.course.id'}) {
313: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
314: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
315: unless ($symb) {
316: ($symb)=&Apache::lonnet::whichuser();
317: }
318: $slotstatus = 'NOTRESERVABLE';
319: my ($reservable_now_order,$reservable_now,$reservable_future_order,
320: $reservable_future) =
321: &Apache::loncommon::get_future_slots($cnum,$cdom,$now,$symb);
322: if ((ref($reservable_now_order) eq 'ARRAY') && (ref($reservable_now) eq 'HASH')) {
323: if (@{$reservable_now_order} > 0) {
324: $slotstatus = 'RESERVABLE';
325: $datemsg = $reservable_now->{$reservable_now_order->[-1]}{'endreserve'};
326: }
327: }
328: unless ($slotstatus eq 'RESERVABLE') {
329: if ((ref($reservable_future_order) eq 'ARRAY') && (ref($reservable_future) eq 'HASH')) {
330: if (@{$reservable_future_order} > 0) {
331: $slotstatus = 'RESERVABLE_LATER';
332: $datemsg = $reservable_future->{$reservable_future_order->[0]}{'startreserve'};
333: }
334: }
335: }
336: }
337: }
338: }
339: return ($slotstatus,$datemsg);
340: }
341:
342: if ($slotstatus eq 'NOT_IN_A_SLOT'
343: && $checkedin ) {
344:
345: if ($got_grade) {
346: return ('SHOW_ANSWER');
347: } else {
348: return ('WAITING_FOR_GRADE');
349: }
350:
351: }
352:
353: if ( $is_correct) {
354: if ($type eq 'problem') {
355: return ($status);
356: }
357: return ('SHOW_ANSWER');
358: }
359:
360: if ( $status eq 'CANNOT_ANSWER' &&
361: ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) {
362: return ($status,$datemsg);
363: }
364:
365: return ($slotstatus,$datemsg,$slot_name,$returned_slot);
366: }
367:
368: # JB, 9/24/2002: Any changes in this function may require a change
369: # in lonnavmaps::resource::getDateStatus.
370: sub check_access {
371: my ($id,$symb) = @_;
372: my $date ='';
373: my $status;
374: my $datemsg = '';
375: my $lastdate = '';
376: my $type;
377: my $passed;
378:
379: if ($env{'request.state'} eq "construct") {
380: if ($env{'form.problemstate'}) {
381: if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
382: if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct'
383: && &hide_problem_status())) {
384: return ('CANNOT_ANSWER',
385: &mt('is in this state due to author settings.'));
386: }
387: } else {
388: return ($env{'form.problemstate'},
389: &mt('is in this state due to author settings.'));
390: }
391: }
392: &Apache::lonxml::debug("in construction ignoring dates");
393: $status='CAN_ANSWER';
394: $datemsg=&mt('is in under construction');
395: # return ($status,$datemsg);
396: }
397:
398: &Apache::lonxml::debug("checking for part :$id:");
399: &Apache::lonxml::debug("time:".time);
400:
401: unless ($symb) {
402: ($symb)=&Apache::lonnet::whichuser();
403: }
404: &Apache::lonxml::debug("symb:".$symb);
405: #if ($env{'request.state'} ne "construct" && $symb ne '') {
406: if ($env{'request.state'} ne "construct") {
407: my $idacc = &Apache::lonnet::EXT("resource.$id.acc",$symb);
408: my $allowed=&Apache::loncommon::check_ip_acc($idacc);
409: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
410: $status='INVALID_ACCESS';
411: $date=&mt("can not be accessed from your location.");
412: return($status,$date);
413: }
414: if ($env{'form.grade_imsexport'}) {
415: if (($env{'request.course.id'}) &&
416: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
417: return ('SHOW_ANSWER');
418: }
419: }
420: foreach my $temp ("opendate","duedate","answerdate") {
421: $lastdate = $date;
422: if ($temp eq 'duedate') {
423: $date = &due_date($id,$symb);
424: } else {
425: $date = &Apache::lonnet::EXT("resource.$id.$temp",$symb);
426: }
427:
428: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type",$symb);
429: if ($thistype =~ /^(con_lost|no_such_host)/ ||
430: $date =~ /^(con_lost|no_such_host)/) {
431: $status='UNAVAILABLE';
432: $date=&mt("may open later.");
433: return($status,$date);
434: }
435: if ($thistype eq 'date_interval') {
436: if ($temp eq 'opendate') {
437: $date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)-$date;
438: }
439: if ($temp eq 'answerdate') {
440: $date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)+$date;
441: }
442: }
443: &Apache::lonxml::debug("found :$date: for :$temp:");
444: if ($date eq '') {
445: $date = &mt("an unknown date"); $passed = 0;
446: } elsif ($date eq 'con_lost') {
447: $date = &mt("an indeterminate date"); $passed = 0;
448: } else {
449: if (time < $date) { $passed = 0; } else { $passed = 1; }
450: $date = &Apache::lonlocal::locallocaltime($date);
451: }
452: if (!$passed) { $type=$temp; last; }
453: }
454: &Apache::lonxml::debug("have :$type:$passed:");
455: if ($passed) {
456: $status='SHOW_ANSWER';
457: $datemsg=$date;
458: } elsif ($type eq 'opendate') {
459: $status='CLOSED';
460: $datemsg = &mt('will open on [_1]',$date);
461: } elsif ($type eq 'duedate') {
462: $status='CAN_ANSWER';
463: $datemsg = &mt('is due at [_1]',$date);
464: } elsif ($type eq 'answerdate') {
465: $status='CLOSED';
466: $datemsg = &mt('was due on [_1], and answers will be available on [_2]',
467: $lastdate,$date);
468: }
469: }
470: if ($status eq 'CAN_ANSWER' ||
471: (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
472: #check #tries, and if correct.
473: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
474: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries",$symb);
475: if ( $tries eq '' ) { $tries = '0'; }
476: if ( $maxtries eq '' &&
477: $env{'request.state'} ne 'construct') { $maxtries = '2'; }
478: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
479: # if (correct and show prob status) or excused then CANNOT_ANSWER
480: if ( ($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/)
481: && (&show_problem_status()) ) {
482: if (($Apache::lonhomework::history{"resource.$id.awarded"} >= 1) ||
483: (&Apache::lonnet::EXT("resource.$id.retrypartial",$symb) !~/^1|on|yes$/i)) {
484: $status = 'CANNOT_ANSWER';
485: }
486: } elsif ($Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
487: $status = 'CANNOT_ANSWER';
488: }
489: if ($status eq 'CANNOT_ANSWER'
490: && &show_answer_problem_status()) {
491: $status = 'SHOW_ANSWER';
492: }
493: }
494: if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
495: my @interval=&Apache::lonnet::EXT("resource.$id.interval",$symb);
496: &Apache::lonxml::debug("looking for interval @interval");
497: if ($interval[0]) {
498: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
499: &Apache::lonxml::debug("looking for accesstime $first_access");
500: if (!$first_access) {
501: $status='NOT_YET_VIEWED';
502: my $due_date = &due_date($id,$symb);
503: my $seconds_left = $due_date - time;
504: if ($seconds_left > $interval[0] || $due_date eq '') {
505: $seconds_left = $interval[0];
506: }
507: $datemsg=&seconds_to_human_length($seconds_left);
508: }
509: }
510: }
511:
512: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
513: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
514: # return ('UNCHECKEDOUT','needs to be checked out');
515: #}
516:
517: &Apache::lonxml::debug("sending back :$status:$datemsg:");
518: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
519: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
520: $status='CAN_ANSWER';
521: $datemsg=&mt('is closed but you are allowed to view it');
522: }
523:
524: return ($status,$datemsg);
525: }
526: # this should work exactly like the copy in lonnavmaps.pm
527: sub due_date {
528: my ($part_id,$symb,$udom,$uname)=@_;
529: my $date;
530: my @interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
531: $udom,$uname);
532: &Apache::lonxml::debug("looking for interval $part_id $symb @interval");
533: my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
534: $udom,$uname);
535: &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
536: if ($interval[0] =~ /\d+/) {
537: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
538: &Apache::lonxml::debug("looking for first_access $first_access ($interval[1])");
539: if (defined($first_access)) {
540: my $interval = $first_access+$interval[0];
541: $date = (!$due_date || $interval < $due_date) ? $interval
542: : $due_date;
543: } else {
544: $date = $due_date;
545: }
546: } else {
547: $date = $due_date;
548: }
549: return $date;
550: }
551:
552: sub seconds_to_human_length {
553: my ($length)=@_;
554:
555: my $seconds=$length%60; $length=int($length/60);
556: my $minutes=$length%60; $length=int($length/60);
557: my $hours=$length%24; $length=int($length/24);
558: my $days=$length;
559:
560: my $timestr;
561: if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
562: if ($hours > 0) { $timestr.=($timestr?", ":"").
563: &mt('[quant,_1,hour]',$hours); }
564: if ($minutes > 0) { $timestr.=($timestr?", ":"").
565: &mt('[quant,_1,minute]',$minutes); }
566: if ($seconds > 0) { $timestr.=($timestr?", ":"").
567: &mt('[quant,_1,second]',$seconds); }
568: return $timestr;
569: }
570:
571: sub showhash {
572: my (%hash) = @_;
573: &showhashsubset(\%hash,'.');
574: return '';
575: }
576:
577: sub showarray {
578: my ($array)=@_;
579: my $string="(";
580: foreach my $elm (@{ $array }) {
581: if (ref($elm) eq 'ARRAY') {
582: $string.=&showarray($elm);
583: } elsif (ref($elm) eq 'HASH') {
584: $string.= "HASH --- \n<br />";
585: $string.= &showhashsubset($elm,'.');
586: } else {
587: $string.="$elm,"
588: }
589: }
590: chop($string);
591: $string.=")";
592: return $string;
593: }
594:
595: sub showhashsubset {
596: my ($hash,$keyre) = @_;
597: my $resultkey;
598: foreach $resultkey (sort(keys(%$hash))) {
599: if ($resultkey !~ /$keyre/) { next; }
600: if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
601: &Apache::lonxml::debug("$resultkey ---- ".
602: &showarray($$hash{$resultkey}));
603: } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
604: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
605: &showhashsubset($$hash{$resultkey},'.');
606: } else {
607: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
608: }
609: }
610: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
611: return '';
612: }
613:
614: sub setuppermissions {
615: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
616: unless ($Apache::lonhomework::browse eq 'F') {
617: $Apache::lonhomework::browse=&Apache::lonnet::allowed('bro',$env{'request.filename'});
618: }
619: my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
620: if (! $viewgrades &&
621: exists($env{'request.course.sec'}) &&
622: $env{'request.course.sec'} !~ /^\s*$/) {
623: $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
624: '/'.$env{'request.course.sec'});
625: }
626: $Apache::lonhomework::viewgrades = $viewgrades;
627:
628: if ($Apache::lonhomework::browse eq 'F' &&
629: $env{'form.devalidatecourseresdata'} eq 'on') {
630: my (undef,$courseid) = &Apache::lonnet::whichuser();
631: &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
632: $env{"course.$courseid.domain"});
633: }
634:
635: my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
636: if (! $modifygrades &&
637: exists($env{'request.course.sec'}) &&
638: $env{'request.course.sec'} !~ /^\s*$/) {
639: $modifygrades =
640: &Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
641: '/'.$env{'request.course.sec'});
642: }
643: $Apache::lonhomework::modifygrades = $modifygrades;
644:
645: my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'});
646: if (! $queuegrade &&
647: exists($env{'request.course.sec'}) &&
648: $env{'request.course.sec'} !~ /^\s*$/) {
649: $queuegrade =
650: &Apache::lonnet::allowed('qgr',$env{'request.course.id'}.
651: '/'.$env{'request.course.sec'});
652: }
653: $Apache::lonhomework::queuegrade = $queuegrade;
654: return '';
655: }
656:
657: sub unset_permissions {
658: undef($Apache::lonhomework::queuegrade);
659: undef($Apache::lonhomework::modifygrades);
660: undef($Apache::lonhomework::viewgrades);
661: undef($Apache::lonhomework::browse);
662: }
663:
664: sub setupheader {
665: my $request=$_[0];
666: &Apache::loncommon::content_type($request,'text/html');
667: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
668: &Apache::loncommon::no_cache($request);
669: }
670: # $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
671: # 'lastrevisiondate'));
672: $request->send_http_header;
673: return OK if $request->header_only;
674: return ''
675: }
676:
677: sub handle_save_or_undo {
678: my ($request,$problem,$result,$getobjref) = @_;
679:
680: my $file = &Apache::lonnet::filelocation("",$request->uri);
681: my $filebak =$file.".bak";
682: my $filetmp =$file.".tmp";
683: my $error=0;
684: if (($env{'form.problemmode'} eq 'undo') || ($env{'form.problemmode'} eq 'undoxml')) {
685: my $error=0;
686: if (!&File::Copy::copy($file,$filetmp)) { $error=1; }
687: if ((!$error) && (!&File::Copy::copy($filebak,$file))) { $error=1; }
688: if ((!$error) && (!&File::Copy::move($filetmp,$filebak))) { $error=1; }
689: if (!$error) {
690: &Apache::lonxml::info("<p><b>".
691: &mt("Undid changes, Switched [_1] and [_2]",
692: '<span class="LC_filename">'.$filebak.
693: '</span>',
694: '<span class="LC_filename">'.$file.
695: '</span>')."</b></p>");
696: } else {
697: &Apache::lonxml::info("<p><span class=\"LC_error\">".
698: &mt("Unable to undo, unable to switch [_1] and [_2]",
699: '<span class="LC_filename">'.
700: $filebak.'</span>',
701: '<span class="LC_filename">'.
702: $file.'</span>')."</span></p>");
703: $error=1;
704: }
705: } else {
706: &Apache::lonnet::correct_line_ends($result);
707:
708: my $fs=Apache::File->new(">$filebak");
709: if (defined($fs)) {
710: print $fs $$problem;
711: } else {
712: &Apache::lonxml::info("<span class=\"LC_error\">".
713: &mt("Unable to make backup [_1]",
714: '<span class="LC_filename">'.
715: $filebak.'</span>')."</span>");
716: $error=2;
717: }
718: my $fh=Apache::File->new(">$file");
719: if (defined($fh)) {
720: print $fh $$result;
721: if (ref($getobjref) eq 'SCALAR') {
722: if ($file =~ m{([^/]+)\.(html?)$}) {
723: my $fname = $1;
724: my $ext = $2;
725: my $path = $file;
726: $path =~ s/\Q$fname\E\.\Q$ext\E$//;
727: my (%allfiles,%codebase);
728: &Apache::lonnet::extract_embedded_items($file,\%allfiles,
729: \%codebase,$result);
730: if (keys(%allfiles) > 0) {
731: my $url = $request->uri;
732: my $state = <<STATE;
733: <input type="hidden" name="action" value="upload_embedded" />
734: <input type="hidden" name="url" value="$url" />
735: STATE
736: $$getobjref = "<h3>".&mt("Reference Warning")."</h3>".
737: "<p>".&mt("Completed upload of the file. This file contained references to other files.")."</p>".
738: "<p>".&mt("Please select the locations from which the referenced files are to be uploaded.")."</p>".
739: &Apache::loncommon::ask_for_embedded_content($url,$state,\%allfiles,\%codebase,
740: {'error_on_invalid_names' => 1,
741: 'ignore_remote_references' => 1,});
742: }
743: }
744: }
745: } else {
746: &Apache::lonxml::info('<span class="LC_error">'.
747: &mt("Unable to write to [_1]",
748: '<span class="LC_filename">'.
749: $file.'</span>').
750: '</span>');
751: $error|=4;
752: }
753: }
754: return $error;
755: }
756:
757: sub analyze_header {
758: my ($request) = @_;
759: my $js = &Apache::structuretags::setmode_javascript();
760:
761: # Breadcrumbs
762: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
763: 'text' => 'Authoring Space'},
764: {'href' => '',
765: 'text' => 'Problem Testing'},
766: {'href' => '',
767: 'text' => 'Analyzing a problem'}];
768:
769: my $result =
770: &Apache::loncommon::start_page('Analyzing a problem',
771: $js,
772: {'bread_crumbs' => $brcrum,})
773: .&Apache::loncommon::head_subbox(
774: &Apache::loncommon::CSTR_pageheader());
775: $result .=
776: '<form name="lonhomework" method="post" action="'.
777: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
778: '<input type="hidden" name="problemmode" value="'.
779: $env{'form.problemmode'}.'" />'.
780: &Apache::structuretags::remember_problem_state().'
781: <div class="LC_edit_problem_analyze_header">
782: <input type="button" name="submitmode" value="'.&mt("EditXML").'" '.
783: 'onclick="javascript:setmode(this.form,'."'editxml'".')" />
784: <input type="button" name="submitmode" value="'.&mt('Edit').'" '.
785: 'onclick="javascript:setmode(this.form,'."'edit'".')" />
786: <hr />
787: <input type="button" name="submitmode" value="'.&mt("View").'" '.
788: 'onclick="javascript:setmode(this.form,'."'view'".')" />
789: <hr />
790: </div>'
791: .&Apache::lonxml::message_location().
792: '</form>';
793: &Apache::lonxml::add_messages(\$result);
794: $request->print($result);
795: $request->rflush();
796: }
797:
798: sub analyze_footer {
799: my ($request) = @_;
800: $request->print(&Apache::loncommon::end_page());
801: $request->rflush();
802: }
803:
804: sub analyze {
805: my ($request,$file) = @_;
806: &Apache::lonxml::debug("Analyze");
807: my $result;
808: my %overall;
809: my %seedexample;
810: my %allparts;
811: my $rndseed=$env{'form.rndseed'};
812: &analyze_header($request);
813: my %prog_state=
814: &Apache::lonhtmlcommon::Create_PrgWin($request,$env{'form.numtoanalyze'});
815: for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
816: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,'last problem');
817: if (&Apache::loncommon::connection_aborted($request)) { return; }
818: my $thisseed=$i+$rndseed;
819: my $subresult=&Apache::lonnet::ssi($request->uri,
820: ('grade_target' => 'analyze'),
821: ('rndseed' => $thisseed));
822: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
823: my %analyze=&Apache::lonnet::str2hash($subresult);
824: my @parts;
825: if (ref($analyze{'parts'}) eq 'ARRAY') {
826: @parts=@{ $analyze{'parts'} };
827: }
828: foreach my $part (@parts) {
829: if (!exists($allparts{$part})) {$allparts{$part}=1;};
830: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
831: $analyze{$part.'.type'} eq 'stringresponse' ||
832: $analyze{$part.'.type'} eq 'formularesponse' ) {
833: foreach my $name (keys(%{ $analyze{$part.'.answer'} })) {
834: my $i=0;
835: foreach my $answer_part (@{ $analyze{$part.'.answer'}{$name} }) {
836: push( @{ $overall{$part.'.answer'}[$i] },
837: $answer_part);
838: my $concatanswer= join("\0",@{ $answer_part });
839: if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
840: $answer_part = ['<span class="LC_error">'.&mt('Error').'</span>'];
841: }
842: $seedexample{join("\0",$part,$i,@{$answer_part})}=
843: $thisseed;
844: $i++;
845: }
846: }
847: if (!keys(%{ $analyze{$part.'.answer'} })) {
848: my $answer_part =
849: ['<span class="LC_error">'.&mt('Error').'</span>'];
850: $seedexample{join("\0",$part,0,@{$answer_part})}=
851: $thisseed;
852: push( @{ $overall{$part.'.answer'}[0] },
853: $answer_part);
854: }
855: }
856: }
857: }
858: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,&mt('Analyzing Results'));
859: $request->print('<hr />'
860: .'<h3>'
861: .&mt('List of possible answers')
862: .'</h3>'
863: );
864: foreach my $part (sort(keys(%allparts))) {
865: if ((ref($overall{$part.'.answer'}) eq 'ARRAY') &&
866: (@{$overall{$part.'.answer'}} > 0)) {
867: for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
868: my $num_cols=scalar(@{ $overall{$part.'.answer'}[$i][0] });
869: $request->print(&Apache::loncommon::start_data_table()
870: .&Apache::loncommon::start_data_table_header_row()
871: .'<th colspan="'.($num_cols+1).'">'
872: .&mt('Part').' '.$part
873: );
874: if (scalar(@{ $overall{$part.'.answer'} }) > 1) {
875: $request->print(' '.&mt('Answer [_1]',$i+1));
876: }
877: $request->print('</th>'
878: .&Apache::loncommon::end_data_table_header_row()
879: );
880: my %frequency;
881: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) {
882: $frequency{join("\0",@{ $answer })}++;
883: }
884: $request->print(&Apache::loncommon::start_data_table_header_row()
885: .'<th colspan="'.($num_cols).'">'.&mt('Answer').'</th>'
886: .'<th>'.&mt('Frequency').'<br />'
887: .'('.&mt('click for example').')</th>'
888: .&Apache::loncommon::end_data_table_header_row()
889: );
890: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
891: $request->print(&Apache::loncommon::start_data_table_row()
892: .'<td>'
893: .join('</td><td>',split("\0",$answer))
894: .'</td>'
895: .'<td>'
896: .'<a href="'.$request->uri.'?rndseed='.$seedexample{join("\0",$part,$i,$answer)}.'">'.$frequency{$answer}.'</a>'
897: .'</td>'
898: .&Apache::loncommon::end_data_table_row()
899: );
900: }
901: $request->print(&Apache::loncommon::end_data_table());
902: }
903: } else {
904: $request->print('<p class="LC_warning">'
905: .&mt('Response [_1] is not analyzable at this time.',$part)
906: .'</p>'
907: );
908: }
909: }
910: if (scalar(keys(%allparts)) == 0 ) {
911: $request->print('<p class="LC_warning">'
912: .&mt('Found no analyzable responses in this problem.'
913: .' Currently only Numerical, Formula and String response styles are supported.')
914: .'</p>'
915: );
916: }
917: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
918: &analyze_footer($request);
919: &Apache::lonhomework::showhash(%overall);
920: return $result;
921: }
922:
923: {
924: my $show_problem_status;
925: sub reset_show_problem_status {
926: undef($show_problem_status);
927: }
928:
929: sub set_show_problem_status {
930: my ($new_status) = @_;
931: $show_problem_status = lc($new_status);
932: }
933:
934: sub hide_problem_status {
935: return ($show_problem_status eq 'no'
936: || $show_problem_status eq 'no_feedback_ever');
937: }
938:
939: sub show_problem_status {
940: return ($show_problem_status eq 'yes'
941: || $show_problem_status eq 'answer'
942: || $show_problem_status eq '');
943: }
944:
945: sub show_some_problem_status {
946: return ($show_problem_status eq 'no');
947: }
948:
949: sub show_no_problem_status {
950: return ($show_problem_status eq 'no_feedback_ever');
951: }
952:
953: sub show_answer_problem_status {
954: return ($show_problem_status eq 'answer');
955: }
956: }
957:
958: sub editxmlmode {
959: my ($request,$file) = @_;
960: my $result;
961: my $problem=&Apache::lonnet::getfile($file);
962: if ($problem eq -1) {
963: &Apache::lonxml::error(
964: '<p class="LC_error">'
965: .&mt('Unable to find [_1]',
966: '<span class="LC_filename">'.$file.'</span>')
967: .'</p>');
968:
969: $problem='';
970: }
971: if (($env{'form.problemmode'} eq 'saveeditxml') ||
972: ($env{'form.problemmode'} eq 'saveviewxml') ||
973: ($env{'form.problemmode'} eq 'undoxml')) {
974: my $error=&handle_save_or_undo($request,\$problem,
975: \$env{'form.editxmltext'});
976: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
977: }
978: &Apache::lonhomework::showhashsubset(\%env,'^form');
979: if ($env{'form.problemmode'} eq 'saveviewxml') {
980: &Apache::lonhomework::showhashsubset(\%env,'^form');
981: $env{'form.problemmode'}='view';
982: &renderpage($request,$file);
983: } else {
984: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
985: if ($cols > 80) { $cols = 80; }
986: if ($cols < 70) { $cols = 70; }
987: if ($rows < 20) { $rows = 20; }
988: my $js =
989: &Apache::edit::js_change_detection().
990: &Apache::loncommon::resize_textarea_js().
991: &Apache::structuretags::setmode_javascript().
992: &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
993:
994: # Breadcrumbs
995: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
996: 'text' => 'Authoring Space'},
997: {'href' => '',
998: 'text' => 'Problem Editing'}];
999:
1000: my $start_page =
1001: &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
1002: {'no_auto_mt_title' => 1,
1003: 'only_body' => 0,
1004: 'add_entries' => {
1005: 'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
1006: 'onload' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
1007: },
1008: 'bread_crumbs' => $brcrum,
1009: });
1010:
1011: $result=$start_page
1012: .&Apache::loncommon::head_subbox(
1013: &Apache::loncommon::CSTR_pageheader());
1014: $result.=&renderpage($request,$file,['no_output_web'],1).
1015: '<form '.&Apache::edit::form_change_detection().' name="lonhomework" method="post" action="'.
1016: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1017: &Apache::structuretags::remember_problem_state().'
1018: <div class="LC_edit_problem_header">
1019: <div class="LC_edit_problem_header_title">'.
1020: &mt('Problem Editing').' '.&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').
1021: '</div><div class="LC_edit_actionbar" id="actionbar">';
1022:
1023: $result.='<input type="hidden" name="problemmode" value="saveedit" />'.
1024: &Apache::structuretags::problem_edit_buttons('editxml');
1025: $result.='<div>';
1026:
1027: $result .= '<ol class="LC_primary_menu" style="display:inline-block;font-size:90%;vertical-align:middle;">';
1028:
1029: unless ($env{'environment.nocodemirror'}) {
1030: # dropdown menus
1031: $result .= Apache::lonmenu::create_submenu("#", "",
1032: &mt("Problem Templates"), template_dropdown_datastructure());
1033:
1034: $result .= Apache::lonmenu::create_submenu("#", "",
1035: &mt("Response Types"), responseblock_dropdown_datastructure());
1036:
1037: $result .= Apache::lonmenu::create_submenu("#", "",
1038: &mt("Conditional Blocks"), conditional_scripting_datastructure());
1039:
1040: $result .= Apache::lonmenu::create_submenu("#", "",
1041: &mt("Miscellaneous"), misc_datastructure());
1042: }
1043:
1044: $result .= Apache::lonmenu::create_submenu("#", "",
1045: &mt("Help") . ' <img src="/adm/help/help.png" alt="' . &mt("Help") .
1046: '" style="vertical-align:text-bottom; height: auto; margin:0; "/>',
1047: helpmenu_datastructure(),"");
1048:
1049: $result.="</ol></div>";
1050:
1051: $result .= '</div></div>' .
1052: &Apache::lonxml::message_location() .
1053: &Apache::loncommon::xmleditor_js() .
1054: '<textarea ' . &Apache::edit::element_change_detection() .
1055: ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" ' .
1056: ' name="editxmltext" id="LC_editxmltext">' .
1057: &HTML::Entities::encode($problem,'<>&"') .
1058: '</textarea> <div id="LC_aftertextarea"> </div> </form>';
1059:
1060: my $resource = $env{'request.ambiguous'};
1061: unless($env{'environment.nocodemirror'}){
1062: $result .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined-xml.css">
1063: <script src="/adm/codemirror/codemirror-compressed-xml.js"></script>
1064: <script>
1065: CodeMirror.defineMode("mixedmode", function(config) {
1066: return CodeMirror.multiplexingMode(
1067: CodeMirror.getMode(config, "xml"),
1068: {
1069: open: "\<script type=\"loncapa/perl\"\>", close: "\</script\>",
1070: mode: CodeMirror.getMode(config, "perl"),
1071: delimStyle: "tag",
1072: }
1073: );
1074: });
1075: var cm = CodeMirror.fromTextArea(document.getElementById("LC_editxmltext"),
1076: {
1077: mode: "mixedmode",
1078: lineWrapping: true,
1079: lineNumbers: true,
1080: tabSize: 4,
1081: indentUnit: 4,
1082:
1083: autoCloseTags: true,
1084: autoCloseBrackets: true,
1085: height: "auto",
1086: styleActiveLine: true,
1087:
1088: extraKeys: {
1089: "Tab": "indentMore",
1090: "Shift-Tab": "indentLess",
1091: }
1092: });
1093: restoreScrollPosition("'.$resource.'");
1094: </script>';
1095: }
1096:
1097: $result .= &Apache::loncommon::end_page();
1098: &Apache::lonxml::add_messages(\$result);
1099: $request->print($result);
1100: }
1101: return '';
1102: }
1103:
1104: #
1105: # Render the page in whatever target desired.
1106: #
1107: sub renderpage {
1108: my ($request,$file,$targets,$return_string) = @_;
1109:
1110: my @targets = @{$targets || [&get_target()]};
1111: &Apache::lonhomework::showhashsubset(\%env,'form.');
1112: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1113:
1114: my $overall_result;
1115: foreach my $target (@targets) {
1116: # FIXME need to do something intelligent when a problem goes
1117: # from viewable to not viewable due to map conditions
1118: #&setuppermissions();
1119: #if ( $Apache::lonhomework::browse ne '2'
1120: # && $Apache::lonhomework::browse ne 'F' ) {
1121: # $request->print(" You most likely shouldn't see me.");
1122: #}
1123: #my $t0 = [&gettimeofday()];
1124: my $output=1;
1125: if ($target eq 'no_output_web') {
1126: $target = 'web'; $output=0;
1127: }
1128: my $problem=&Apache::lonnet::getfile($file);
1129: my $result;
1130: if ($problem eq -1) {
1131: $problem='';
1132: my $filename=(split('/',$file))[-1];
1133: my $error =
1134: '<p class="LC_error">'
1135: .&mt('Unable to find [_1]',
1136: '<span class="LC_filename">'.$filename.'</span>')
1137: ."</p>";
1138: $result.=
1139: &Apache::loncommon::simple_error_page($request,'Not available',
1140: $error,{'no_auto_mt_msg' => 1});
1141: return;
1142: }
1143:
1144: my %mystyle;
1145: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
1146: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
1147: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
1148:
1149: &Apache::lonxml::debug("Should be parsing now");
1150: $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
1151: &setup_vars($target),%mystyle);
1152: &finished_parsing();
1153: if (!$output) { $result = ''; }
1154: #$request->print("Result follows:");
1155: if ($target eq 'modified') {
1156: &handle_save_or_undo($request,\$problem,\$result);
1157: } else {
1158: if ($target eq 'analyze') {
1159: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
1160: undef(%Apache::lonhomework::analyze);
1161: }
1162: #my $td=&tv_interval($t0);
1163: #if ( $Apache::lonxml::debug) {
1164: #$result =~ s:</body>::;
1165: #$result.="<br />Spent $td seconds processing target $target\n</body>";
1166: #}
1167: # $request->print($result);
1168: $overall_result.=$result;
1169: # $request->rflush();
1170: }
1171: #$request->print(":Result ends");
1172: #my $td=&tv_interval($t0);
1173: }
1174: if (!$return_string) {
1175: &Apache::lonxml::add_messages(\$overall_result);
1176: $request->print($overall_result);
1177: $request->rflush();
1178: } else {
1179: return $overall_result;
1180: }
1181: }
1182:
1183: sub finished_parsing {
1184: undef($Apache::lonhomework::parsing_a_problem);
1185: undef($Apache::lonhomework::parsing_a_task);
1186: }
1187:
1188: # function extracted from get_template_html
1189: # returns "key" -> list
1190: # key: path of template
1191: # value 1: title
1192: # value 2: category
1193: # value 3: name of help topic ???
1194: sub get_template_list{
1195: my ($extension) = @_;
1196:
1197: my @files = glob($Apache::lonnet::perlvar{'lonIncludes'}.
1198: '/templates/*.'.$extension);
1199: @files = map {[$_,&mt(&Apache::lonnet::metadata($_, 'title')),
1200: (&Apache::lonnet::metadata($_, 'category')?&mt(&Apache::lonnet::metadata($_, 'category')):&mt('Miscellaneous')),
1201: &mt(&Apache::lonnet::metadata($_, 'help'))]} (@files);
1202: @files = sort {$a->[2].$a->[1] cmp $b->[2].$b->[1]} (@files);
1203: return @files;
1204: }
1205:
1206: sub get_template_html {
1207: my ($extension) = @_;
1208: my $result;
1209: my @allnames;
1210: &Apache::lonxml::debug("Looking for :$extension:");
1211: my $glob_extension = $extension;
1212: if ($extension eq 'survey' || $extension eq 'exam') {
1213: $glob_extension = 'problem';
1214: }
1215: my @files = &get_template_list($extension);
1216: my ($midpoint,$seconddiv,$numfiles);
1217: my @noexamplelink = ('blank.problem','blank.library','script.library');
1218: $numfiles = 0;
1219: foreach my $file (@files) {
1220: next if ($file->[1] !~ /\S/);
1221: $numfiles ++;
1222: }
1223: if ($numfiles > 0) {
1224: $result = '<div class="LC_left_float">';
1225: $midpoint = int($numfiles/2);
1226: if ($numfiles%2) {
1227: $midpoint ++;
1228: }
1229: }
1230: my $count = 0;
1231: my $currentcategory='';
1232: my $first = 1;
1233: my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
1234: foreach my $file (@files) {
1235: next if ($file->[1] !~ /\S/);
1236: if ($file->[2] ne $currentcategory) {
1237: $currentcategory=$file->[2];
1238: if ((!$seconddiv) && ($count >= $midpoint)) {
1239: $result .= '</div></div>'."\n".'<div class="LC_left_float">'."\n";
1240: $seconddiv = 1;
1241: } elsif (!$first) {
1242: $result.='</div>'."\n";
1243: } else {
1244: $first = 0;
1245: }
1246: $result.= '<div class="LC_Box">'."\n"
1247: .'<h3 class="LC_hcell">'.$currentcategory.'</h3>'."\n";
1248: $count++;
1249: }
1250: $result .=
1251: '<label><input type="radio" name="template" value="'.$file->[0].'" />'.
1252: $file->[1].'</label>';
1253: if ($file->[3]) {
1254: $result.=&Apache::loncommon::help_open_topic($file->[3]);
1255: }
1256: # Provide example link
1257: my $filename=$file->[0];
1258: $filename=~s{^\Q$londocroot\E}{};
1259: if (!(grep($filename =~ /\Q$_\E$/,@noexamplelink))) {
1260: $result .= ' <span class="LC_fontsize_small">'
1261: .&Apache::loncommon::modal_link(
1262: $filename.'?inhibitmenu=yes',&mt('Example'),600,420,'sample')
1263: .'</span>';
1264: }
1265: $result .= '<br />'."\n";
1266: $count ++;
1267: }
1268: if ($numfiles > 0) {
1269: $result .= '</div></div>'."\n".'<div class="LC_clear_float_footer"></div>'."\n";
1270: }
1271: return $result;
1272: }
1273:
1274: sub newproblem {
1275: my ($request) = @_;
1276:
1277: if ($env{'form.mode'} eq 'blank'){
1278: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1279: &File::Copy::copy('/home/httpd/html/res/adm/includes/templates/blank.problem',$dest);
1280: &renderpage($request,$dest);
1281: return;
1282: }
1283: if ($env{'form.template'}) {
1284: my $file = $env{'form.template'};
1285: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1286: &File::Copy::copy($file,$dest);
1287: &renderpage($request,$dest);
1288: return;
1289: }
1290:
1291: my ($extension) = ($request->uri =~ m/\.(\w+)$/);
1292: &Apache::lonxml::debug("Looking for :$extension:");
1293: my $templatelist=&get_template_html($extension);
1294: if ($env{'form.newfile'} && !$templatelist) {
1295: # no templates found
1296: my $templatefilename =
1297: $request->dir_config('lonIncludes').'/templates/blank.'.$extension;
1298: &Apache::lonxml::debug("$templatefilename");
1299: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1300: &File::Copy::copy($templatefilename,$dest);
1301: &renderpage($request,$dest);
1302: } else {
1303: my $url=&HTML::Entities::encode($request->uri,'<>&"');
1304: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1305: my $errormsg;
1306: my $instructions;
1307: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1308: 'text' => 'Authoring Space'},
1309: {'href' => '',
1310: 'text' => "Create New $extension"}];
1311: my $start_page =
1312: &Apache::loncommon::start_page("Create New $extension",
1313: undef,
1314: {'bread_crumbs' => $brcrum,});
1315: $request->print(
1316: $start_page
1317: .&Apache::loncommon::head_subbox(
1318: &Apache::loncommon::CSTR_pageheader())
1319: .'<h1>'.&mt("Creating a new $extension resource.")."</h1>
1320: $errormsg
1321: ".&mt("The requested file [_1] currently does not exist.",
1322: '<span class="LC_filename">'.$url.'</span>').'
1323: <p class="LC_info">
1324: '.&mt("To create a new $extension, select a template from the".
1325: " list below. Then click on the \"Create $extension\" button.").'
1326: </p><div><form action="'.$url.'" method="post">');
1327:
1328: if (defined($templatelist)) {
1329: $request->print($templatelist);
1330: }
1331: $request->print('<br /><input type="submit" name="newfile" value="'.
1332: &mt("Create $extension").'" />');
1333: $request->print('</form></div>'.&Apache::loncommon::end_page());
1334: }
1335: return;
1336: }
1337:
1338: sub update_construct_style {
1339: if ($env{'request.state'} eq "construct"
1340: && $env{'form.problemmode'} eq 'view'
1341: && defined($env{'form.submitted'})
1342: && !defined($env{'form.resetdata'})
1343: && !defined($env{'form.newrandomization'})) {
1344: if ((!$env{'form.style_file'} && $env{'construct.style'})
1345: ||$env{'form.clear_style_file'}) {
1346: &Apache::lonnet::delenv('construct.style');
1347: } elsif ($env{'form.style_file'}
1348: && $env{'construct.style'} ne $env{'form.style_file'}) {
1349: &Apache::lonnet::appenv({'construct.style' =>
1350: $env{'form.style_file'}});
1351: }
1352: }
1353: }
1354:
1355: #
1356: # Sets interval for current user so time left will be zero, either for the entire folder
1357: # containing the current resource, or just the resource, depending on value of first item
1358: # in interval array retrieved from EXT("resource.0.interval");
1359: #
1360: sub zero_timer {
1361: my ($symb) = @_;
1362: my ($hastimeleft,$first_access,$now);
1363: my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb);
1364: if (@interval > 1) {
1365: if ($interval[1] eq 'course') {
1366: return;
1367: } else {
1368: my $now = time;
1369: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
1370: if ($first_access > 0) {
1371: if ($first_access+$interval[0] > $now) {
1372: my $done_time = $now - $first_access;
1373: my $snum = 1;
1374: if ($interval[1] eq 'map') {
1375: $snum = 2;
1376: }
1377: my $result =
1378: &Apache::lonparmset::storeparm_by_symb_inner($symb,'0_interval',
1379: $snum,$done_time,
1380: 'date_interval',
1381: $env{'user.name'},
1382: $env{'user.domain'});
1383: return $result;
1384: }
1385: }
1386: }
1387: }
1388: return;
1389: }
1390:
1391: sub handler {
1392: #my $t0 = [&gettimeofday()];
1393: my $request=$_[0];
1394:
1395: $Apache::lonxml::request=$request;
1396: $Apache::lonxml::debug=$env{'user.debug'};
1397: $env{'request.uri'}=$request->uri;
1398: &setuppermissions();
1399:
1400: my $file=&Apache::lonnet::filelocation("",$request->uri);
1401:
1402: #check if we know where we are
1403: if ($env{'request.course.fn'} && !&Apache::lonnet::symbread('','',1,1)) {
1404: # if we are browsing we might not be able to know where we are
1405: if ($Apache::lonhomework::browse ne 'F' &&
1406: $env{'request.state'} ne "construct") {
1407: #should know where we are, so ask
1408: &unset_permissions();
1409: $request->internal_redirect('/adm/ambiguous');
1410: return OK;
1411: }
1412: }
1413: if (&setupheader($request)) {
1414: &unset_permissions();
1415: return OK;
1416: }
1417:
1418: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
1419: &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
1420: my ($symb) = &Apache::lonnet::whichuser();
1421: &Apache::lonxml::debug('symb is '.$symb);
1422: if ($env{'request.state'} eq "construct") {
1423: if ( -e $file ) {
1424: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1425: ['problemmode']);
1426: if (!(defined $env{'form.problemmode'})) {
1427: #first visit to problem in construction space
1428: $env{'form.problemmode'}= 'view';
1429: &renderpage($request,$file);
1430: } elsif (($env{'form.problemmode'} eq 'editxml') ||
1431: ($env{'form.problemmode'} eq 'saveeditxml') ||
1432: ($env{'form.problemmode'} eq 'saveviewxml') ||
1433: ($env{'form.problemmode'} eq 'undoxml')) {
1434: &editxmlmode($request,$file);
1435: } elsif ($env{'form.problemmode'} eq 'calcanswers') {
1436: &analyze($request,$file);
1437: } else {
1438: &update_construct_style();
1439: &renderpage($request,$file);
1440: }
1441: } else {
1442: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1443: ['mode']);
1444: # requested file doesn't exist in contruction space
1445: &newproblem($request);
1446: }
1447: } else {
1448: # Set the event timer to zero if the "done button" was clicked. The button is
1449: # part of the doneButton form created in lonmenu.pm
1450: if ($symb && $env{'form.LC_interval_done'} eq 'true') {
1451: &zero_timer($symb);
1452: undef($env{'form.LC_interval_done'});
1453: }
1454: # just render the page normally outside of construction space
1455: &Apache::lonxml::debug("not construct");
1456: &renderpage($request,$file);
1457: }
1458: #my $td=&tv_interval($t0);
1459: #&Apache::lonxml::debug("Spent $td seconds processing");
1460: # always turn off debug messages
1461: $Apache::lonxml::debug=0;
1462: &unset_permissions();
1463: return OK;
1464:
1465: }
1466:
1467: sub template_dropdown_datastructure {
1468: # gathering the all templates and their path, title, category and help topic
1469: my @templates = get_template_list('problem');
1470: # template category => title
1471: my %tmplthash = ();
1472: # template title => path
1473: my %tmpltcontent = ();
1474:
1475: foreach my $template (@templates){
1476: # put in hash if the template is not empty
1477: unless ($template->[1] eq ''){
1478: push(@{$tmplthash{$template->[2]}}, $template->[1]);
1479: push(@{$tmpltcontent{$template->[1]}},$template->[0]);
1480: }
1481: }
1482:
1483: my $catList = [];
1484: foreach my $cat (sort keys %tmplthash) {
1485: my $catItems = [];
1486: foreach my $title (sort @{$tmplthash{$cat}}) {
1487: my $path = $tmpltcontent{$title}->[0];
1488: my $code;
1489: open(FH, "<$path");
1490: while(<FH>){
1491: $code.= $_ unless $_ =~ /(<problem>)|(<\/problem>)/;
1492: }
1493: close(FH);
1494:
1495: if ($code ne '') {
1496: my $href = 'javascript:insertText(\'' . &convert_for_js(&HTML::Entities::encode($code,'<>&"')) . '\')';
1497: my $currItem = [$href, $title, undef];
1498: push @{$catItems}, $currItem;
1499: }
1500: }
1501: push @{$catList}, [$catItems, $cat, undef];
1502: }
1503:
1504: return $catList;
1505: }
1506:
1507: sub responseblock_dropdown_datastructure {
1508:
1509: my $mathCat = [
1510: [
1511: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_formularesponse())) . "\')", &mt("Formula Response"), undef],
1512: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_functionplotresponse())) . "\')", &mt("Function Plot Response"), undef],
1513: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_mathresponse())) . "\')", &mt("Math Response"), undef],
1514: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_numericalresponse())) . "\')", &mt("Numerical Response"), undef]
1515: ],
1516: &mt("Math"),
1517: undef
1518: ];
1519:
1520: my $miscCat = [
1521: [
1522: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_imageresponse())) . "\')", &mt("Click on Image"), undef],
1523: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_customresponse())) . "\')", &mt("Custom Response"), undef],
1524: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_externalresponse())) . "\')", &mt("External Response"), undef],
1525: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_matchresponse())) . "\')", &mt("Match Two Lists"), undef],
1526: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_radiobuttonresponse())) . "\')", &mt("One out of N statements"), undef],
1527: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_optionresponse())) . "\')", &mt("Select from Options"), undef],
1528: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_rankresponse())) . "\')", &mt("Rank Values"), undef]
1529: ],
1530: &mt("Miscellaneous"),
1531: undef
1532: ];
1533:
1534: my $chemCat = [
1535: [
1536: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_reactionresponse())) . "\')", &mt("Chemical Reaction"), undef],
1537: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicresponse())) . "\')", &mt("Organic Chemical Structure"), undef]
1538: ],
1539: &mt("Chemistry"),
1540: undef
1541: ];
1542:
1543: my $textCat = [
1544: [
1545: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_stringresponse())) . "\')", &mt("String Response"), undef],
1546: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_essayresponse())) . "\')", &mt("Essay"), undef]
1547: ],
1548: &mt("Text"),
1549: undef
1550: ];
1551:
1552: return [$mathCat, $miscCat, $chemCat, $textCat];
1553: }
1554:
1555:
1556: sub conditional_scripting_datastructure {
1557: # TODO: corresponding routines should be used for the javascript:insertText parts
1558: # instead of the placeholder routine default_xml_tag with the tags
1559: # e.g. &default_xml_tag("postanswerdate") should be replaced with a routine which
1560: # returns the corresponding content for this case
1561:
1562: #TODO translated is currently temporarily here, another solution should be found where the
1563: # needed string can be retrieved
1564:
1565: my $translatedTag = '
1566: <translated>
1567: <lang which="en"></lang>
1568: <lang which="default"></lang>
1569: </translated>';
1570: return [
1571: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode($translatedTag)) . "\')", &mt("Translated Block"), undef],
1572: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("block"))) . "\')", &mt("Conditional Block"), undef],
1573: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("postanswerdate"))) . "\')", &mt("After Answer Date Block"), undef],
1574: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("preduedate"))) . "\')", &mt("Before Due Date Block"), undef],
1575: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("solved"))) . "\')", &mt("Block For After Solved"), undef],
1576: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("notsolved"))) . "\')", &mt("Block For When Not Solved"), undef]
1577: ];
1578: }
1579:
1580: sub misc_datastructure {
1581: return [
1582: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_img())) . "\')", &mt("Image"), undef],
1583: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::lonplot::insert_gnuplot())) . "\')", &mt("GNU Plot"), undef],
1584: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicstructure())) . "\')", &mt("Organic Structure"), undef],
1585: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_script())) . "\')", &mt("Script Block"), undef],
1586: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("allow"))) . "\')", &mt("File Dependencies"), undef],
1587: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("import"))) . "\')", &mt("Import a File"), undef],
1588: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::londefdef::insert_meta())) . "\')", &mt("Custom Metadata"), undef],
1589: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("part"))) . "\')", &mt("Problem Part"), undef]
1590: ];
1591: }
1592:
1593: # helper routine for the datastructure building subroutines
1594: sub default_xml_tag {
1595: my ($tag) = @_;
1596: return "\n<$tag></$tag>";
1597: }
1598:
1599:
1600: sub helpmenu_datastructure {
1601:
1602: my $width = 500;
1603: my $height = 600;
1604:
1605: my $helpers = [
1606: ['Problem_LON-CAPA_Functions', &mt('Script Functions')],
1607: ['Greek_Symbols', &mt('Greek Symbols')],
1608: ['Other_Symbols', &mt('Other Symbols')],
1609: ['Authoring_Output_Tags', &mt('Output Tags')],
1610: ['Authoring_Multilingual_Problems',
1611: &mt('How to create problems in different languages')]
1612: ];
1613:
1614: my $help_structure = [];
1615:
1616: foreach my $count (0..(scalar(@{$helpers})-1)) {
1617: my $filename = $helpers->[$count]->[0];
1618: my $title = $helpers->[$count]->[1];
1619: my $href = &HTML::Entities::encode("javascript:openMyModal('/adm/help/$filename.hlp',$width,$height,'yes');");
1620: push @{$help_structure}, [$href, $title, undef];
1621: }
1622:
1623: return $help_structure;
1624: }
1625:
1626: # we need substitution to not break javascript code
1627: sub convert_for_js {
1628: my $return = shift;
1629: $return =~ s|script|ESCAPEDSCRIPT|g;
1630: $return =~ s|\\|\\\\|g;
1631: $return =~ s|\n|\\r\\n|g;
1632: $return =~ s|'|\\'|g;
1633: $return =~ s|'|\\'|g;
1634: return $return;
1635: }
1636:
1637: 1;
1638: __END__
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