1: # The LearningOnline Network with CAPA
2: # The LON-CAPA Homework handler
3: #
4: # $Id: lonhomework.pm,v 1.355 2015/06/29 15:42:07 damieng 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,$type)=@_;
214:
215: # does it pass normal muster
216: my ($status,$datemsg)=&check_access($id);
217:
218: my $useslots = &Apache::lonnet::EXT("resource.0.useslots");
219: if ($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");
243: my $available = &Apache::lonnet::EXT("resource.0.available");
244: my @slots= (split(':',$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: my ($symb)=&Apache::lonnet::whichuser();
316: $slotstatus = 'NOTRESERVABLE';
317: my ($reservable_now_order,$reservable_now,$reservable_future_order,
318: $reservable_future) =
319: &Apache::loncommon::get_future_slots($cnum,$cdom,$now,$symb);
320: if ((ref($reservable_now_order) eq 'ARRAY') && (ref($reservable_now) eq 'HASH')) {
321: if (@{$reservable_now_order} > 0) {
322: $slotstatus = 'RESERVABLE';
323: $datemsg = $reservable_now->{$reservable_now_order->[-1]}{'endreserve'};
324: }
325: }
326: unless ($slotstatus eq 'RESERVABLE') {
327: if ((ref($reservable_future_order) eq 'ARRAY') && (ref($reservable_future) eq 'HASH')) {
328: if (@{$reservable_future_order} > 0) {
329: $slotstatus = 'RESERVABLE_LATER';
330: $datemsg = $reservable_future->{$reservable_future_order->[0]}{'startreserve'};
331: }
332: }
333: }
334: }
335: }
336: }
337: return ($slotstatus,$datemsg);
338: }
339:
340: if ($slotstatus eq 'NOT_IN_A_SLOT'
341: && $checkedin ) {
342:
343: if ($got_grade) {
344: return ('SHOW_ANSWER');
345: } else {
346: return ('WAITING_FOR_GRADE');
347: }
348:
349: }
350:
351: if ( $is_correct) {
352: if ($type eq 'problem') {
353: return ($status);
354: }
355: return ('SHOW_ANSWER');
356: }
357:
358: if ( $status eq 'CANNOT_ANSWER' &&
359: ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) {
360: return ($status,$datemsg);
361: }
362:
363: return ($slotstatus,$datemsg,$slot_name,$returned_slot);
364: }
365:
366: # JB, 9/24/2002: Any changes in this function may require a change
367: # in lonnavmaps::resource::getDateStatus.
368: sub check_access {
369: my ($id) = @_;
370: my $date ='';
371: my $status;
372: my $datemsg = '';
373: my $lastdate = '';
374: my $type;
375: my $passed;
376:
377: if ($env{'request.state'} eq "construct") {
378: if ($env{'form.problemstate'}) {
379: if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
380: if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct'
381: && &hide_problem_status())) {
382: return ('CANNOT_ANSWER',
383: &mt('is in this state due to author settings.'));
384: }
385: } else {
386: return ($env{'form.problemstate'},
387: &mt('is in this state due to author settings.'));
388: }
389: }
390: &Apache::lonxml::debug("in construction ignoring dates");
391: $status='CAN_ANSWER';
392: $datemsg=&mt('is in under construction');
393: # return ($status,$datemsg);
394: }
395:
396: &Apache::lonxml::debug("checking for part :$id:");
397: &Apache::lonxml::debug("time:".time);
398:
399: my ($symb)=&Apache::lonnet::whichuser();
400: &Apache::lonxml::debug("symb:".$symb);
401: #if ($env{'request.state'} ne "construct" && $symb ne '') {
402: if ($env{'request.state'} ne "construct") {
403: my $idacc = &Apache::lonnet::EXT("resource.$id.acc");
404: my $allowed=&Apache::loncommon::check_ip_acc($idacc);
405: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
406: $status='INVALID_ACCESS';
407: $date=&mt("can not be accessed from your location.");
408: return($status,$date);
409: }
410: if ($env{'form.grade_imsexport'}) {
411: if (($env{'request.course.id'}) &&
412: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
413: return ('SHOW_ANSWER');
414: }
415: }
416: foreach my $temp ("opendate","duedate","answerdate") {
417: $lastdate = $date;
418: if ($temp eq 'duedate') {
419: $date = &due_date($id);
420: } else {
421: $date = &Apache::lonnet::EXT("resource.$id.$temp");
422: }
423:
424: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
425: if ($thistype =~ /^(con_lost|no_such_host)/ ||
426: $date =~ /^(con_lost|no_such_host)/) {
427: $status='UNAVAILABLE';
428: $date=&mt("may open later.");
429: return($status,$date);
430: }
431: if ($thistype eq 'date_interval') {
432: if ($temp eq 'opendate') {
433: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
434: }
435: if ($temp eq 'answerdate') {
436: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
437: }
438: }
439: &Apache::lonxml::debug("found :$date: for :$temp:");
440: if ($date eq '') {
441: $date = &mt("an unknown date"); $passed = 0;
442: } elsif ($date eq 'con_lost') {
443: $date = &mt("an indeterminate date"); $passed = 0;
444: } else {
445: if (time < $date) { $passed = 0; } else { $passed = 1; }
446: $date = &Apache::lonlocal::locallocaltime($date);
447: }
448: if (!$passed) { $type=$temp; last; }
449: }
450: &Apache::lonxml::debug("have :$type:$passed:");
451: if ($passed) {
452: $status='SHOW_ANSWER';
453: $datemsg=$date;
454: } elsif ($type eq 'opendate') {
455: $status='CLOSED';
456: $datemsg = &mt('will open on [_1]',$date);
457: } elsif ($type eq 'duedate') {
458: $status='CAN_ANSWER';
459: $datemsg = &mt('is due at [_1]',$date);
460: } elsif ($type eq 'answerdate') {
461: $status='CLOSED';
462: $datemsg = &mt('was due on [_1], and answers will be available on [_2]',
463: $lastdate,$date);
464: }
465: }
466: if ($status eq 'CAN_ANSWER' ||
467: (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
468: #check #tries, and if correct.
469: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
470: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
471: if ( $tries eq '' ) { $tries = '0'; }
472: if ( $maxtries eq '' &&
473: $env{'request.state'} ne 'construct') { $maxtries = '2'; }
474: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
475: # if (correct and show prob status) or excused then CANNOT_ANSWER
476: if ( ($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/)
477: && (&show_problem_status()) ) {
478: if (($Apache::lonhomework::history{"resource.$id.awarded"} >= 1) ||
479: (&Apache::lonnet::EXT("resource.$id.retrypartial") !~/^1|on|yes$/i)) {
480: $status = 'CANNOT_ANSWER';
481: }
482: } elsif ($Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
483: $status = 'CANNOT_ANSWER';
484: }
485: if ($status eq 'CANNOT_ANSWER'
486: && &show_answer_problem_status()) {
487: $status = 'SHOW_ANSWER';
488: }
489: }
490: if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
491: my @interval=&Apache::lonnet::EXT("resource.$id.interval");
492: &Apache::lonxml::debug("looking for interval @interval");
493: if ($interval[0]) {
494: my $first_access=&Apache::lonnet::get_first_access($interval[1]);
495: &Apache::lonxml::debug("looking for accesstime $first_access");
496: if (!$first_access) {
497: $status='NOT_YET_VIEWED';
498: my $due_date = &due_date($id);
499: my $seconds_left = $due_date - time;
500: if ($seconds_left > $interval[0] || $due_date eq '') {
501: $seconds_left = $interval[0];
502: }
503: $datemsg=&seconds_to_human_length($seconds_left);
504: }
505: }
506: }
507:
508: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
509: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
510: # return ('UNCHECKEDOUT','needs to be checked out');
511: #}
512:
513: &Apache::lonxml::debug("sending back :$status:$datemsg:");
514: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
515: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
516: $status='CAN_ANSWER';
517: $datemsg=&mt('is closed but you are allowed to view it');
518: }
519:
520: return ($status,$datemsg);
521: }
522: # this should work exactly like the copy in lonnavmaps.pm
523: sub due_date {
524: my ($part_id,$symb,$udom,$uname)=@_;
525: my $date;
526: my @interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
527: $udom,$uname);
528: &Apache::lonxml::debug("looking for interval $part_id $symb @interval");
529: my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
530: $udom,$uname);
531: &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
532: if ($interval[0] =~ /\d+/) {
533: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
534: &Apache::lonxml::debug("looking for first_access $first_access ($interval[1])");
535: if (defined($first_access)) {
536: my $interval = $first_access+$interval[0];
537: $date = (!$due_date || $interval < $due_date) ? $interval
538: : $due_date;
539: } else {
540: $date = $due_date;
541: }
542: } else {
543: $date = $due_date;
544: }
545: return $date;
546: }
547:
548: sub seconds_to_human_length {
549: my ($length)=@_;
550:
551: my $seconds=$length%60; $length=int($length/60);
552: my $minutes=$length%60; $length=int($length/60);
553: my $hours=$length%24; $length=int($length/24);
554: my $days=$length;
555:
556: my $timestr;
557: if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
558: if ($hours > 0) { $timestr.=($timestr?", ":"").
559: &mt('[quant,_1,hour]',$hours); }
560: if ($minutes > 0) { $timestr.=($timestr?", ":"").
561: &mt('[quant,_1,minute]',$minutes); }
562: if ($seconds > 0) { $timestr.=($timestr?", ":"").
563: &mt('[quant,_1,second]',$seconds); }
564: return $timestr;
565: }
566:
567: sub showhash {
568: my (%hash) = @_;
569: &showhashsubset(\%hash,'.');
570: return '';
571: }
572:
573: sub showarray {
574: my ($array)=@_;
575: my $string="(";
576: foreach my $elm (@{ $array }) {
577: if (ref($elm) eq 'ARRAY') {
578: $string.=&showarray($elm);
579: } elsif (ref($elm) eq 'HASH') {
580: $string.= "HASH --- \n<br />";
581: $string.= &showhashsubset($elm,'.');
582: } else {
583: $string.="$elm,"
584: }
585: }
586: chop($string);
587: $string.=")";
588: return $string;
589: }
590:
591: sub showhashsubset {
592: my ($hash,$keyre) = @_;
593: my $resultkey;
594: foreach $resultkey (sort(keys(%$hash))) {
595: if ($resultkey !~ /$keyre/) { next; }
596: if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
597: &Apache::lonxml::debug("$resultkey ---- ".
598: &showarray($$hash{$resultkey}));
599: } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
600: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
601: &showhashsubset($$hash{$resultkey},'.');
602: } else {
603: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
604: }
605: }
606: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
607: return '';
608: }
609:
610: sub setuppermissions {
611: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
612: unless ($Apache::lonhomework::browse eq 'F') {
613: $Apache::lonhomework::browse=&Apache::lonnet::allowed('bro',$env{'request.filename'});
614: }
615: my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
616: if (! $viewgrades &&
617: exists($env{'request.course.sec'}) &&
618: $env{'request.course.sec'} !~ /^\s*$/) {
619: $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
620: '/'.$env{'request.course.sec'});
621: }
622: $Apache::lonhomework::viewgrades = $viewgrades;
623:
624: if ($Apache::lonhomework::browse eq 'F' &&
625: $env{'form.devalidatecourseresdata'} eq 'on') {
626: my (undef,$courseid) = &Apache::lonnet::whichuser();
627: &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
628: $env{"course.$courseid.domain"});
629: }
630:
631: my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
632: if (! $modifygrades &&
633: exists($env{'request.course.sec'}) &&
634: $env{'request.course.sec'} !~ /^\s*$/) {
635: $modifygrades =
636: &Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
637: '/'.$env{'request.course.sec'});
638: }
639: $Apache::lonhomework::modifygrades = $modifygrades;
640:
641: my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'});
642: if (! $queuegrade &&
643: exists($env{'request.course.sec'}) &&
644: $env{'request.course.sec'} !~ /^\s*$/) {
645: $queuegrade =
646: &Apache::lonnet::allowed('qgr',$env{'request.course.id'}.
647: '/'.$env{'request.course.sec'});
648: }
649: $Apache::lonhomework::queuegrade = $queuegrade;
650: return '';
651: }
652:
653: sub unset_permissions {
654: undef($Apache::lonhomework::queuegrade);
655: undef($Apache::lonhomework::modifygrades);
656: undef($Apache::lonhomework::viewgrades);
657: undef($Apache::lonhomework::browse);
658: }
659:
660: sub setupheader {
661: my $request=$_[0];
662: &Apache::loncommon::content_type($request,'text/html');
663: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
664: &Apache::loncommon::no_cache($request);
665: }
666: # $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
667: # 'lastrevisiondate'));
668: $request->send_http_header;
669: return OK if $request->header_only;
670: return ''
671: }
672:
673: sub handle_save_or_undo {
674: my ($request,$problem,$result,$getobjref) = @_;
675:
676: my $file = &Apache::lonnet::filelocation("",$request->uri);
677: my $filebak =$file.".bak";
678: my $filetmp =$file.".tmp";
679: my $error=0;
680: if (($env{'form.problemmode'} eq 'undo') || ($env{'form.problemmode'} eq 'undoxml')) {
681: my $error=0;
682: if (!&File::Copy::copy($file,$filetmp)) { $error=1; }
683: if ((!$error) && (!&File::Copy::copy($filebak,$file))) { $error=1; }
684: if ((!$error) && (!&File::Copy::move($filetmp,$filebak))) { $error=1; }
685: if (!$error) {
686: &Apache::lonxml::info("<p><b>".
687: &mt("Undid changes, Switched [_1] and [_2]",
688: '<span class="LC_filename">'.$filebak.
689: '</span>',
690: '<span class="LC_filename">'.$file.
691: '</span>')."</b></p>");
692: } else {
693: &Apache::lonxml::info("<p><span class=\"LC_error\">".
694: &mt("Unable to undo, unable to switch [_1] and [_2]",
695: '<span class="LC_filename">'.
696: $filebak.'</span>',
697: '<span class="LC_filename">'.
698: $file.'</span>')."</span></p>");
699: $error=1;
700: }
701: } else {
702: &Apache::lonnet::correct_line_ends($result);
703:
704: my $fs=Apache::File->new(">$filebak");
705: if (defined($fs)) {
706: print $fs $$problem;
707: } else {
708: &Apache::lonxml::info("<span class=\"LC_error\">".
709: &mt("Unable to make backup [_1]",
710: '<span class="LC_filename">'.
711: $filebak.'</span>')."</span>");
712: $error=2;
713: }
714: my $fh=Apache::File->new(">$file");
715: if (defined($fh)) {
716: print $fh $$result;
717: if (ref($getobjref) eq 'SCALAR') {
718: if ($file =~ m{([^/]+)\.(html?)$}) {
719: my $fname = $1;
720: my $ext = $2;
721: my $path = $file;
722: $path =~ s/\Q$fname\E\.\Q$ext\E$//;
723: my (%allfiles,%codebase);
724: &Apache::lonnet::extract_embedded_items($file,\%allfiles,
725: \%codebase,$result);
726: if (keys(%allfiles) > 0) {
727: my $url = $request->uri;
728: my $state = <<STATE;
729: <input type="hidden" name="action" value="upload_embedded" />
730: <input type="hidden" name="url" value="$url" />
731: STATE
732: $$getobjref = "<h3>".&mt("Reference Warning")."</h3>".
733: "<p>".&mt("Completed upload of the file. This file contained references to other files.")."</p>".
734: "<p>".&mt("Please select the locations from which the referenced files are to be uploaded.")."</p>".
735: &Apache::loncommon::ask_for_embedded_content($url,$state,\%allfiles,\%codebase,
736: {'error_on_invalid_names' => 1,
737: 'ignore_remote_references' => 1,});
738: }
739: }
740: }
741: } else {
742: &Apache::lonxml::info('<span class="LC_error">'.
743: &mt("Unable to write to [_1]",
744: '<span class="LC_filename">'.
745: $file.'</span>').
746: '</span>');
747: $error|=4;
748: }
749: }
750: return $error;
751: }
752:
753: sub analyze_header {
754: my ($request) = @_;
755: my $js = &Apache::structuretags::setmode_javascript();
756:
757: # Breadcrumbs
758: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
759: 'text' => 'Authoring Space'},
760: {'href' => '',
761: 'text' => 'Problem Testing'},
762: {'href' => '',
763: 'text' => 'Analyzing a problem'}];
764:
765: my $result =
766: &Apache::loncommon::start_page('Analyzing a problem',
767: $js,
768: {'bread_crumbs' => $brcrum,})
769: .&Apache::loncommon::head_subbox(
770: &Apache::loncommon::CSTR_pageheader());
771: $result .=
772: '<form name="lonhomework" method="post" action="'.
773: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
774: '<input type="hidden" name="problemmode" value="'.
775: $env{'form.problemmode'}.'" />'.
776: &Apache::structuretags::remember_problem_state().'
777: <div class="LC_edit_problem_analyze_header">
778: <input type="button" name="submitmode" value="'.&mt("EditXML").'" '.
779: 'onclick="javascript:setmode(this.form,'."'editxml'".')" />
780: <input type="button" name="submitmode" value="'.&mt('Edit').'" '.
781: 'onclick="javascript:setmode(this.form,'."'edit'".')" />
782: <hr />
783: <input type="button" name="submitmode" value="'.&mt("View").'" '.
784: 'onclick="javascript:setmode(this.form,'."'view'".')" />
785: <hr />
786: </div>'
787: .&Apache::lonxml::message_location().
788: '</form>';
789: &Apache::lonxml::add_messages(\$result);
790: $request->print($result);
791: $request->rflush();
792: }
793:
794: sub analyze_footer {
795: my ($request) = @_;
796: $request->print(&Apache::loncommon::end_page());
797: $request->rflush();
798: }
799:
800: sub analyze {
801: my ($request,$file) = @_;
802: &Apache::lonxml::debug("Analyze");
803: my $result;
804: my %overall;
805: my %seedexample;
806: my %allparts;
807: my $rndseed=$env{'form.rndseed'};
808: &analyze_header($request);
809: my %prog_state=
810: &Apache::lonhtmlcommon::Create_PrgWin($request,$env{'form.numtoanalyze'});
811: for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
812: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,'last problem');
813: if (&Apache::loncommon::connection_aborted($request)) { return; }
814: my $thisseed=$i+$rndseed;
815: my $subresult=&Apache::lonnet::ssi($request->uri,
816: ('grade_target' => 'analyze'),
817: ('rndseed' => $thisseed));
818: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
819: my %analyze=&Apache::lonnet::str2hash($subresult);
820: my @parts;
821: if (ref($analyze{'parts'}) eq 'ARRAY') {
822: @parts=@{ $analyze{'parts'} };
823: }
824: foreach my $part (@parts) {
825: if (!exists($allparts{$part})) {$allparts{$part}=1;};
826: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
827: $analyze{$part.'.type'} eq 'stringresponse' ||
828: $analyze{$part.'.type'} eq 'formularesponse' ) {
829: foreach my $name (keys(%{ $analyze{$part.'.answer'} })) {
830: my $i=0;
831: foreach my $answer_part (@{ $analyze{$part.'.answer'}{$name} }) {
832: push( @{ $overall{$part.'.answer'}[$i] },
833: $answer_part);
834: my $concatanswer= join("\0",@{ $answer_part });
835: if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
836: $answer_part = ['<span class="LC_error">'.&mt('Error').'</span>'];
837: }
838: $seedexample{join("\0",$part,$i,@{$answer_part})}=
839: $thisseed;
840: $i++;
841: }
842: }
843: if (!keys(%{ $analyze{$part.'.answer'} })) {
844: my $answer_part =
845: ['<span class="LC_error">'.&mt('Error').'</span>'];
846: $seedexample{join("\0",$part,0,@{$answer_part})}=
847: $thisseed;
848: push( @{ $overall{$part.'.answer'}[0] },
849: $answer_part);
850: }
851: }
852: }
853: }
854: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,&mt('Analyzing Results'));
855: $request->print('<hr />'
856: .'<h3>'
857: .&mt('List of possible answers')
858: .'</h3>'
859: );
860: foreach my $part (sort(keys(%allparts))) {
861: if ((ref($overall{$part.'.answer'}) eq 'ARRAY') &&
862: (@{$overall{$part.'.answer'}} > 0)) {
863: for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
864: my $num_cols=scalar(@{ $overall{$part.'.answer'}[$i][0] });
865: $request->print(&Apache::loncommon::start_data_table()
866: .&Apache::loncommon::start_data_table_header_row()
867: .'<th colspan="'.($num_cols+1).'">'
868: .&mt('Part').' '.$part
869: );
870: if (scalar(@{ $overall{$part.'.answer'} }) > 1) {
871: $request->print(' '.&mt('Answer [_1]',$i+1));
872: }
873: $request->print('</th>'
874: .&Apache::loncommon::end_data_table_header_row()
875: );
876: my %frequency;
877: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) {
878: $frequency{join("\0",@{ $answer })}++;
879: }
880: $request->print(&Apache::loncommon::start_data_table_header_row()
881: .'<th colspan="'.($num_cols).'">'.&mt('Answer').'</th>'
882: .'<th>'.&mt('Frequency').'<br />'
883: .'('.&mt('click for example').')</th>'
884: .&Apache::loncommon::end_data_table_header_row()
885: );
886: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
887: $request->print(&Apache::loncommon::start_data_table_row()
888: .'<td>'
889: .join('</td><td>',split("\0",$answer))
890: .'</td>'
891: .'<td>'
892: .'<a href="'.$request->uri.'?rndseed='.$seedexample{join("\0",$part,$i,$answer)}.'">'.$frequency{$answer}.'</a>'
893: .'</td>'
894: .&Apache::loncommon::end_data_table_row()
895: );
896: }
897: $request->print(&Apache::loncommon::end_data_table());
898: }
899: } else {
900: $request->print('<p class="LC_warning">'
901: .&mt('Response [_1] is not analyzable at this time.',$part)
902: .'</p>'
903: );
904: }
905: }
906: if (scalar(keys(%allparts)) == 0 ) {
907: $request->print('<p class="LC_warning">'
908: .&mt('Found no analyzable responses in this problem.'
909: .' Currently only Numerical, Formula and String response styles are supported.')
910: .'</p>'
911: );
912: }
913: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
914: &analyze_footer($request);
915: &Apache::lonhomework::showhash(%overall);
916: return $result;
917: }
918:
919: {
920: my $show_problem_status;
921: sub reset_show_problem_status {
922: undef($show_problem_status);
923: }
924:
925: sub set_show_problem_status {
926: my ($new_status) = @_;
927: $show_problem_status = lc($new_status);
928: }
929:
930: sub hide_problem_status {
931: return ($show_problem_status eq 'no'
932: || $show_problem_status eq 'no_feedback_ever');
933: }
934:
935: sub show_problem_status {
936: return ($show_problem_status eq 'yes'
937: || $show_problem_status eq 'answer'
938: || $show_problem_status eq '');
939: }
940:
941: sub show_some_problem_status {
942: return ($show_problem_status eq 'no');
943: }
944:
945: sub show_no_problem_status {
946: return ($show_problem_status eq 'no_feedback_ever');
947: }
948:
949: sub show_answer_problem_status {
950: return ($show_problem_status eq 'answer');
951: }
952: }
953:
954: sub editxmlmode {
955: my ($request,$file) = @_;
956: my $result;
957: my $problem=&Apache::lonnet::getfile($file);
958: if ($problem eq -1) {
959: &Apache::lonxml::error(
960: '<p class="LC_error">'
961: .&mt('Unable to find [_1]',
962: '<span class="LC_filename">'.$file.'</span>')
963: .'</p>');
964:
965: $problem='';
966: }
967: if (($env{'form.problemmode'} eq 'saveeditxml') ||
968: ($env{'form.problemmode'} eq 'saveviewxml') ||
969: ($env{'form.problemmode'} eq 'undoxml')) {
970: my $error=&handle_save_or_undo($request,\$problem,
971: \$env{'form.editxmltext'});
972: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
973: }
974: &Apache::lonhomework::showhashsubset(\%env,'^form');
975: if ($env{'form.problemmode'} eq 'saveviewxml') {
976: &Apache::lonhomework::showhashsubset(\%env,'^form');
977: $env{'form.problemmode'}='view';
978: &renderpage($request,$file);
979: } else {
980: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
981: if ($cols > 80) { $cols = 80; }
982: if ($cols < 70) { $cols = 70; }
983: if ($rows < 20) { $rows = 20; }
984: my $js =
985: &Apache::edit::js_change_detection().
986: &Apache::loncommon::resize_textarea_js().
987: &Apache::structuretags::setmode_javascript().
988: &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
989:
990: # Breadcrumbs
991: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
992: 'text' => 'Authoring Space'},
993: {'href' => '',
994: 'text' => 'Problem Editing'}];
995:
996: my $start_page =
997: &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
998: {'no_auto_mt_title' => 1,
999: 'only_body' => 0,
1000: 'add_entries' => {
1001: 'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
1002: 'onload' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
1003: },
1004: 'bread_crumbs' => $brcrum,
1005: });
1006:
1007: $result=$start_page
1008: .&Apache::loncommon::head_subbox(
1009: &Apache::loncommon::CSTR_pageheader());
1010: $result.=&renderpage($request,$file,['no_output_web'],1).
1011: '<form '.&Apache::edit::form_change_detection().' name="lonhomework" method="post" action="'.
1012: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1013: &Apache::structuretags::remember_problem_state().'
1014: <div class="LC_edit_problem_header">
1015: <div class="LC_edit_problem_header_title">'.
1016: &mt('Problem Editing').' '.&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').
1017: '</div><div class="LC_edit_actionbar" id="actionbar">';
1018:
1019: $result.='<input type="hidden" name="problemmode" value="saveedit" />'.
1020: &Apache::structuretags::problem_edit_buttons('editxml');
1021: $result.='<div>';
1022:
1023: $result .= '<ol class="LC_primary_menu" style="display:inline-block;font-size:90%;vertical-align:middle;">';
1024:
1025: unless ($env{'environment.nocodemirror'}) {
1026: # dropdown menus
1027: $result .= Apache::lonmenu::create_submenu("#", "",
1028: &mt("Problem Templates"), template_dropdown_datastructure());
1029:
1030: $result .= Apache::lonmenu::create_submenu("#", "",
1031: &mt("Response Types"), responseblock_dropdown_datastructure());
1032:
1033: $result .= Apache::lonmenu::create_submenu("#", "",
1034: &mt("Conditional Blocks"), conditional_scripting_datastructure());
1035:
1036: $result .= Apache::lonmenu::create_submenu("#", "",
1037: &mt("Miscellaneous"), misc_datastructure());
1038: }
1039:
1040: $result .= Apache::lonmenu::create_submenu("#", "",
1041: &mt("Help") . ' <img src="/adm/help/help.png" alt="' . &mt("Help") .
1042: '" style="vertical-align:text-bottom; height: auto; margin:0; "/>',
1043: helpmenu_datastructure(),"");
1044:
1045: $result.="</ol></div>";
1046:
1047: $result .= '</div></div>' .
1048: &Apache::lonxml::message_location() .
1049: &Apache::loncommon::xmleditor_js() .
1050: '<textarea ' . &Apache::edit::element_change_detection() .
1051: ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" ' .
1052: ' name="editxmltext" id="LC_editxmltext">' .
1053: &HTML::Entities::encode($problem,'<>&"') .
1054: '</textarea> <div id="LC_aftertextarea"> </div> </form>';
1055:
1056: my $resource = $env{'request.ambiguous'};
1057: unless($env{'environment.nocodemirror'}){
1058: $result .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined-xml.css">
1059: <script src="/adm/codemirror/codemirror-compressed-xml.js"></script>
1060: <script>
1061: CodeMirror.defineMode("mixedmode", function(config) {
1062: return CodeMirror.multiplexingMode(
1063: CodeMirror.getMode(config, "xml"),
1064: {
1065: open: "\<script type=\"loncapa/perl\"\>", close: "\</script\>",
1066: mode: CodeMirror.getMode(config, "perl"),
1067: delimStyle: "tag",
1068: }
1069: );
1070: });
1071: var cm = CodeMirror.fromTextArea(document.getElementById("LC_editxmltext"),
1072: {
1073: mode: "mixedmode",
1074: lineWrapping: true,
1075: lineNumbers: true,
1076: tabSize: 4,
1077: indentUnit: 4,
1078:
1079: autoCloseTags: true,
1080: autoCloseBrackets: true,
1081: height: "auto",
1082: styleActiveLine: true,
1083:
1084: extraKeys: {
1085: "Tab": "indentMore",
1086: "Shift-Tab": "indentLess",
1087: }
1088: });
1089: restoreScrollPosition("'.$resource.'");
1090: </script>';
1091: }
1092:
1093: $result .= &Apache::loncommon::end_page();
1094: &Apache::lonxml::add_messages(\$result);
1095: $request->print($result);
1096: }
1097: return '';
1098: }
1099:
1100: #
1101: # Render the page in whatever target desired.
1102: #
1103: sub renderpage {
1104: my ($request,$file,$targets,$return_string) = @_;
1105:
1106: my @targets = @{$targets || [&get_target()]};
1107: &Apache::lonhomework::showhashsubset(\%env,'form.');
1108: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1109:
1110: my $overall_result;
1111: foreach my $target (@targets) {
1112: # FIXME need to do something intelligent when a problem goes
1113: # from viewable to not viewable due to map conditions
1114: #&setuppermissions();
1115: #if ( $Apache::lonhomework::browse ne '2'
1116: # && $Apache::lonhomework::browse ne 'F' ) {
1117: # $request->print(" You most likely shouldn't see me.");
1118: #}
1119: #my $t0 = [&gettimeofday()];
1120: my $output=1;
1121: if ($target eq 'no_output_web') {
1122: $target = 'web'; $output=0;
1123: }
1124: my $problem=&Apache::lonnet::getfile($file);
1125: my $result;
1126: if ($problem eq -1) {
1127: $problem='';
1128: my $filename=(split('/',$file))[-1];
1129: my $error =
1130: '<p class="LC_error">'
1131: .&mt('Unable to find [_1]',
1132: '<span class="LC_filename">'.$filename.'</span>')
1133: ."</p>";
1134: $result.=
1135: &Apache::loncommon::simple_error_page($request,'Not available',
1136: $error,{'no_auto_mt_msg' => 1});
1137: return;
1138: }
1139:
1140: my %mystyle;
1141: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
1142: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
1143: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
1144:
1145: &Apache::lonxml::debug("Should be parsing now");
1146: $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
1147: &setup_vars($target),%mystyle);
1148: &finished_parsing();
1149: if (!$output) { $result = ''; }
1150: #$request->print("Result follows:");
1151: if ($target eq 'modified') {
1152: &handle_save_or_undo($request,\$problem,\$result);
1153: } else {
1154: if ($target eq 'analyze') {
1155: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
1156: undef(%Apache::lonhomework::analyze);
1157: }
1158: #my $td=&tv_interval($t0);
1159: #if ( $Apache::lonxml::debug) {
1160: #$result =~ s:</body>::;
1161: #$result.="<br />Spent $td seconds processing target $target\n</body>";
1162: #}
1163: # $request->print($result);
1164: $overall_result.=$result;
1165: # $request->rflush();
1166: }
1167: #$request->print(":Result ends");
1168: #my $td=&tv_interval($t0);
1169: }
1170: if (!$return_string) {
1171: &Apache::lonxml::add_messages(\$overall_result);
1172: $request->print($overall_result);
1173: $request->rflush();
1174: } else {
1175: return $overall_result;
1176: }
1177: }
1178:
1179: sub finished_parsing {
1180: undef($Apache::lonhomework::parsing_a_problem);
1181: undef($Apache::lonhomework::parsing_a_task);
1182: }
1183:
1184: # function extracted from get_template_html
1185: # returns "key" -> list
1186: # key: path of template
1187: # value 1: title
1188: # value 2: category
1189: # value 3: name of help topic ???
1190: sub get_template_list{
1191: my ($extension) = @_;
1192:
1193: my @files = glob($Apache::lonnet::perlvar{'lonIncludes'}.
1194: '/templates/*.'.$extension);
1195: @files = map {[$_,&mt(&Apache::lonnet::metadata($_, 'title')),
1196: (&Apache::lonnet::metadata($_, 'category')?&mt(&Apache::lonnet::metadata($_, 'category')):&mt('Miscellaneous')),
1197: &mt(&Apache::lonnet::metadata($_, 'help'))]} (@files);
1198: @files = sort {$a->[2].$a->[1] cmp $b->[2].$b->[1]} (@files);
1199: return @files;
1200: }
1201:
1202: sub get_template_html {
1203: my ($extension) = @_;
1204: my $result;
1205: my @allnames;
1206: &Apache::lonxml::debug("Looking for :$extension:");
1207: my $glob_extension = $extension;
1208: if ($extension eq 'survey' || $extension eq 'exam') {
1209: $glob_extension = 'problem';
1210: }
1211: my @files = &get_template_list($extension);
1212: my ($midpoint,$seconddiv,$numfiles);
1213: my @noexamplelink = ('blank.problem','blank.library','script.library');
1214: $numfiles = 0;
1215: foreach my $file (@files) {
1216: next if ($file->[1] !~ /\S/);
1217: $numfiles ++;
1218: }
1219: if ($numfiles > 0) {
1220: $result = '<div class="LC_left_float">';
1221: $midpoint = int($numfiles/2);
1222: if ($numfiles%2) {
1223: $midpoint ++;
1224: }
1225: }
1226: my $count = 0;
1227: my $currentcategory='';
1228: my $first = 1;
1229: my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
1230: foreach my $file (@files) {
1231: next if ($file->[1] !~ /\S/);
1232: if ($file->[2] ne $currentcategory) {
1233: $currentcategory=$file->[2];
1234: if ((!$seconddiv) && ($count >= $midpoint)) {
1235: $result .= '</div></div>'."\n".'<div class="LC_left_float">'."\n";
1236: $seconddiv = 1;
1237: } elsif (!$first) {
1238: $result.='</div>'."\n";
1239: } else {
1240: $first = 0;
1241: }
1242: $result.= '<div class="LC_Box">'."\n"
1243: .'<h3 class="LC_hcell">'.$currentcategory.'</h3>'."\n";
1244: $count++;
1245: }
1246: $result .=
1247: '<label><input type="radio" name="template" value="'.$file->[0].'" />'.
1248: $file->[1].'</label>';
1249: if ($file->[3]) {
1250: $result.=&Apache::loncommon::help_open_topic($file->[3]);
1251: }
1252: # Provide example link
1253: my $filename=$file->[0];
1254: $filename=~s{^\Q$londocroot\E}{};
1255: if (!(grep($filename =~ /\Q$_\E$/,@noexamplelink))) {
1256: $result .= ' <span class="LC_fontsize_small">'
1257: .&Apache::loncommon::modal_link(
1258: $filename.'?inhibitmenu=yes',&mt('Example'),600,420,'sample')
1259: .'</span>';
1260: }
1261: $result .= '<br />'."\n";
1262: $count ++;
1263: }
1264: if ($numfiles > 0) {
1265: $result .= '</div></div>'."\n".'<div class="LC_clear_float_footer"></div>'."\n";
1266: }
1267: return $result;
1268: }
1269:
1270: sub newproblem {
1271: my ($request) = @_;
1272:
1273: if ($env{'form.mode'} eq 'blank'){
1274: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1275: &File::Copy::copy('/home/httpd/html/res/adm/includes/templates/blank.problem',$dest);
1276: &renderpage($request,$dest);
1277: return;
1278: }
1279: if ($env{'form.template'}) {
1280: my $file = $env{'form.template'};
1281: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1282: &File::Copy::copy($file,$dest);
1283: &renderpage($request,$dest);
1284: return;
1285: }
1286:
1287: my ($extension) = ($request->uri =~ m/\.(\w+)$/);
1288: &Apache::lonxml::debug("Looking for :$extension:");
1289: my $templatelist=&get_template_html($extension);
1290: if ($env{'form.newfile'} && !$templatelist) {
1291: # no templates found
1292: my $templatefilename =
1293: $request->dir_config('lonIncludes').'/templates/blank.'.$extension;
1294: &Apache::lonxml::debug("$templatefilename");
1295: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1296: &File::Copy::copy($templatefilename,$dest);
1297: &renderpage($request,$dest);
1298: } else {
1299: my $url=&HTML::Entities::encode($request->uri,'<>&"');
1300: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1301: my $errormsg;
1302: my $instructions;
1303: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1304: 'text' => 'Authoring Space'},
1305: {'href' => '',
1306: 'text' => "Create New $extension"}];
1307: my $start_page =
1308: &Apache::loncommon::start_page("Create New $extension",
1309: undef,
1310: {'bread_crumbs' => $brcrum,});
1311: $request->print(
1312: $start_page
1313: .&Apache::loncommon::head_subbox(
1314: &Apache::loncommon::CSTR_pageheader())
1315: .'<h1>'.&mt("Creating a new $extension resource.")."</h1>
1316: $errormsg
1317: ".&mt("The requested file [_1] currently does not exist.",
1318: '<span class="LC_filename">'.$url.'</span>').'
1319: <p class="LC_info">
1320: '.&mt("To create a new $extension, select a template from the".
1321: " list below. Then click on the \"Create $extension\" button.").'
1322: </p><div><form action="'.$url.'" method="post">');
1323:
1324: if (defined($templatelist)) {
1325: $request->print($templatelist);
1326: }
1327: $request->print('<br /><input type="submit" name="newfile" value="'.
1328: &mt("Create $extension").'" />');
1329: $request->print('</form></div>'.&Apache::loncommon::end_page());
1330: }
1331: return;
1332: }
1333:
1334: sub update_construct_style {
1335: if ($env{'request.state'} eq "construct"
1336: && $env{'form.problemmode'} eq 'view'
1337: && defined($env{'form.submitted'})
1338: && !defined($env{'form.resetdata'})
1339: && !defined($env{'form.newrandomization'})) {
1340: if ((!$env{'form.style_file'} && $env{'construct.style'})
1341: ||$env{'form.clear_style_file'}) {
1342: &Apache::lonnet::delenv('construct.style');
1343: } elsif ($env{'form.style_file'}
1344: && $env{'construct.style'} ne $env{'form.style_file'}) {
1345: &Apache::lonnet::appenv({'construct.style' =>
1346: $env{'form.style_file'}});
1347: }
1348: }
1349: }
1350:
1351: #
1352: # Sets interval for current user so time left will be zero, either for the entire folder
1353: # containing the current resource, or just the resource, depending on value of first item
1354: # in interval array retrieved from EXT("resource.0.interval");
1355: #
1356: sub zero_timer {
1357: my ($symb) = @_;
1358: my ($hastimeleft,$first_access,$now);
1359: my @interval=&Apache::lonnet::EXT("resource.0.interval");
1360: if (@interval > 1) {
1361: if ($interval[1] eq 'course') {
1362: return;
1363: } else {
1364: my $now = time;
1365: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
1366: if ($first_access > 0) {
1367: if ($first_access+$interval[0] > $now) {
1368: my $done_time = $now - $first_access;
1369: my $snum = 1;
1370: if ($interval[1] eq 'map') {
1371: $snum = 2;
1372: }
1373: my $result =
1374: &Apache::lonparmset::storeparm_by_symb_inner($symb,'0_interval',
1375: $snum,$done_time,
1376: 'date_interval',
1377: $env{'user.name'},
1378: $env{'user.domain'});
1379: return $result;
1380: }
1381: }
1382: }
1383: }
1384: return;
1385: }
1386:
1387: sub handler {
1388: #my $t0 = [&gettimeofday()];
1389: my $request=$_[0];
1390:
1391: $Apache::lonxml::request=$request;
1392: $Apache::lonxml::debug=$env{'user.debug'};
1393: $env{'request.uri'}=$request->uri;
1394: &setuppermissions();
1395:
1396: my $file=&Apache::lonnet::filelocation("",$request->uri);
1397:
1398: #check if we know where we are
1399: if ($env{'request.course.fn'} && !&Apache::lonnet::symbread('','',1,1)) {
1400: # if we are browsing we might not be able to know where we are
1401: if ($Apache::lonhomework::browse ne 'F' &&
1402: $env{'request.state'} ne "construct") {
1403: #should know where we are, so ask
1404: &unset_permissions();
1405: $request->internal_redirect('/adm/ambiguous');
1406: return OK;
1407: }
1408: }
1409: if (&setupheader($request)) {
1410: &unset_permissions();
1411: return OK;
1412: }
1413:
1414: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
1415: &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
1416: my ($symb) = &Apache::lonnet::whichuser();
1417: &Apache::lonxml::debug('symb is '.$symb);
1418: if ($env{'request.state'} eq "construct") {
1419: if ( -e $file ) {
1420: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1421: ['problemmode']);
1422: if (!(defined $env{'form.problemmode'})) {
1423: #first visit to problem in construction space
1424: $env{'form.problemmode'}= 'view';
1425: &renderpage($request,$file);
1426: } elsif (($env{'form.problemmode'} eq 'editxml') ||
1427: ($env{'form.problemmode'} eq 'saveeditxml') ||
1428: ($env{'form.problemmode'} eq 'saveviewxml') ||
1429: ($env{'form.problemmode'} eq 'undoxml')) {
1430: &editxmlmode($request,$file);
1431: } elsif ($env{'form.problemmode'} eq 'calcanswers') {
1432: &analyze($request,$file);
1433: } else {
1434: &update_construct_style();
1435: &renderpage($request,$file);
1436: }
1437: } else {
1438: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1439: ['mode']);
1440: # requested file doesn't exist in contruction space
1441: &newproblem($request);
1442: }
1443: } else {
1444: # Set the event timer to zero if the "done button" was clicked. The button is
1445: # part of the doneButton form created in lonmenu.pm
1446: if ($symb && $env{'form.LC_interval_done'} eq 'true') {
1447: &zero_timer($symb);
1448: undef($env{'form.LC_interval_done'});
1449: }
1450: # just render the page normally outside of construction space
1451: &Apache::lonxml::debug("not construct");
1452: &renderpage($request,$file);
1453: }
1454: #my $td=&tv_interval($t0);
1455: #&Apache::lonxml::debug("Spent $td seconds processing");
1456: # always turn off debug messages
1457: $Apache::lonxml::debug=0;
1458: &unset_permissions();
1459: return OK;
1460:
1461: }
1462:
1463: sub template_dropdown_datastructure {
1464: # gathering the all templates and their path, title, category and help topic
1465: my @templates = get_template_list('problem');
1466: # template category => title
1467: my %tmplthash = ();
1468: # template title => path
1469: my %tmpltcontent = ();
1470:
1471: foreach my $template (@templates){
1472: # put in hash if the template is not empty
1473: unless ($template->[1] eq ''){
1474: push(@{$tmplthash{$template->[2]}}, $template->[1]);
1475: push(@{$tmpltcontent{$template->[1]}},$template->[0]);
1476: }
1477: }
1478:
1479: my $catList = [];
1480: foreach my $cat (sort keys %tmplthash) {
1481: my $catItems = [];
1482: foreach my $title (sort @{$tmplthash{$cat}}) {
1483: my $path = $tmpltcontent{$title}->[0];
1484: my $code;
1485: open(FH, "<$path");
1486: while(<FH>){
1487: $code.= $_ unless $_ =~ /(<problem>)|(<\/problem>)/;
1488: }
1489: close(FH);
1490:
1491: if ($code ne '') {
1492: my $href = 'javascript:insertText(\'' . &convert_for_js(&HTML::Entities::encode($code,'<>&"')) . '\')';
1493: my $currItem = [$href, $title, undef];
1494: push @{$catItems}, $currItem;
1495: }
1496: }
1497: push @{$catList}, [$catItems, $cat, undef];
1498: }
1499:
1500: return $catList;
1501: }
1502:
1503: sub responseblock_dropdown_datastructure {
1504:
1505: my $mathCat = [
1506: [
1507: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_formularesponse())) . "\')", &mt("Formula Response"), undef],
1508: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_functionplotresponse())) . "\')", &mt("Function Plot Response"), undef],
1509: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_mathresponse())) . "\')", &mt("Math Response"), undef],
1510: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_numericalresponse())) . "\')", &mt("Numerical Response"), undef]
1511: ],
1512: &mt("Math"),
1513: undef
1514: ];
1515:
1516: my $miscCat = [
1517: [
1518: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_imageresponse())) . "\')", &mt("Click on Image"), undef],
1519: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_customresponse())) . "\')", &mt("Custom Response"), undef],
1520: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_externalresponse())) . "\')", &mt("External Response"), undef],
1521: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_matchresponse())) . "\')", &mt("Match Two Lists"), undef],
1522: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_radiobuttonresponse())) . "\')", &mt("One out of N statements"), undef],
1523: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_optionresponse())) . "\')", &mt("Select from Options"), undef],
1524: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_rankresponse())) . "\')", &mt("Rank Values"), undef]
1525: ],
1526: &mt("Miscellaneous"),
1527: undef
1528: ];
1529:
1530: my $chemCat = [
1531: [
1532: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_reactionresponse())) . "\')", &mt("Chemical Reaction"), undef],
1533: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicresponse())) . "\')", &mt("Organic Chemical Structure"), undef]
1534: ],
1535: &mt("Chemistry"),
1536: undef
1537: ];
1538:
1539: my $textCat = [
1540: [
1541: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_stringresponse())) . "\')", &mt("String Response"), undef],
1542: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_essayresponse())) . "\')", &mt("Essay"), undef]
1543: ],
1544: &mt("Text"),
1545: undef
1546: ];
1547:
1548: return [$mathCat, $miscCat, $chemCat, $textCat];
1549: }
1550:
1551:
1552: sub conditional_scripting_datastructure {
1553: # TODO: corresponding routines should be used for the javascript:insertText parts
1554: # instead of the placeholder routine default_xml_tag with the tags
1555: # e.g. &default_xml_tag("postanswerdate") should be replaced with a routine which
1556: # returns the corresponding content for this case
1557:
1558: #TODO translated is currently temporarily here, another solution should be found where the
1559: # needed string can be retrieved
1560:
1561: my $translatedTag = '
1562: <translated>
1563: <lang which="en"></lang>
1564: <lang which="default"></lang>
1565: </translated>';
1566: return [
1567: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode($translatedTag)) . "\')", &mt("Translated Block"), undef],
1568: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("block"))) . "\')", &mt("Conditional Block"), undef],
1569: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("postanswerdate"))) . "\')", &mt("After Answer Date Block"), undef],
1570: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("preduedate"))) . "\')", &mt("Before Due Date Block"), undef],
1571: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("solved"))) . "\')", &mt("Block For After Solved"), undef],
1572: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("notsolved"))) . "\')", &mt("Block For When Not Solved"), undef]
1573: ];
1574: }
1575:
1576: sub misc_datastructure {
1577: return [
1578: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_img())) . "\')", &mt("Image"), undef],
1579: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::lonplot::insert_gnuplot())) . "\')", &mt("GNU Plot"), undef],
1580: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicstructure())) . "\')", &mt("Organic Structure"), undef],
1581: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_script())) . "\')", &mt("Script Block"), undef],
1582: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("allow"))) . "\')", &mt("File Dependencies"), undef],
1583: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("import"))) . "\')", &mt("Import a File"), undef],
1584: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::londefdef::insert_meta())) . "\')", &mt("Custom Metadata"), undef],
1585: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("part"))) . "\')", &mt("Problem Part"), undef]
1586: ];
1587: }
1588:
1589: # helper routine for the datastructure building subroutines
1590: sub default_xml_tag {
1591: my ($tag) = @_;
1592: return "\n<$tag></$tag>";
1593: }
1594:
1595:
1596: sub helpmenu_datastructure {
1597:
1598: my $width = 500;
1599: my $height = 600;
1600:
1601: my $helpers = [
1602: ['Problem_LON-CAPA_Functions', &mt('Script Functions')],
1603: ['Greek_Symbols', &mt('Greek Symbols')],
1604: ['Other_Symbols', &mt('Other Symbols')],
1605: ['Authoring_Output_Tags', &mt('Output Tags')],
1606: ['Authoring_Multilingual_Problems',
1607: &mt('How to create problems in different languages')]
1608: ];
1609:
1610: my $help_structure = [];
1611:
1612: foreach my $count (0..(scalar(@{$helpers})-1)) {
1613: my $filename = $helpers->[$count]->[0];
1614: my $title = $helpers->[$count]->[1];
1615: my $href = &HTML::Entities::encode("javascript:openMyModal('/adm/help/$filename.hlp',$width,$height,'yes');");
1616: push @{$help_structure}, [$href, $title, undef];
1617: }
1618:
1619: return $help_structure;
1620: }
1621:
1622: # we need substitution to not break javascript code
1623: sub convert_for_js {
1624: my $return = shift;
1625: $return =~ s|script|ESCAPEDSCRIPT|g;
1626: $return =~ s|\\|\\\\|g;
1627: $return =~ s|\n|\\r\\n|g;
1628: $return =~ s|'|\\'|g;
1629: $return =~ s|'|\\'|g;
1630: return $return;
1631: }
1632:
1633: 1;
1634: __END__
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