Annotation of loncom/homework/lonhomework.pm, revision 1.344.2.10.4.4
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.344.2.10.4. (raeburn 4:): # $Id: lonhomework.pm,v 1.344.2.10.4.3 2023/09/07 16:35:29 raeburn Exp $
1.63 albertel 5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
1.159 www 27:
1.1 albertel 28:
29: package Apache::lonhomework;
30: use strict;
1.73 albertel 31: use Apache::style();
32: use Apache::lonxml();
1.204 albertel 33: use Apache::lonnet;
1.73 albertel 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();
1.83 albertel 41: use Apache::caparesponse();
42: use Apache::radiobuttonresponse();
43: use Apache::optionresponse();
44: use Apache::imageresponse();
45: use Apache::essayresponse();
46: use Apache::externalresponse();
1.106 albertel 47: use Apache::rankresponse();
1.107 albertel 48: use Apache::matchresponse();
1.137 albertel 49: use Apache::chemresponse();
1.321 www 50: use Apache::functionplotresponse();
1.169 albertel 51: use Apache::drawimage();
1.344.2.10.4. (raeburn 52:): use Apache::loncourseuser();
53:): use Apache::grades();
1.26 www 54: use Apache::Constants qw(:common);
1.83 albertel 55: use Apache::loncommon();
1.344.2.10.4. (raeburn 56:): use Apache::lonparmset();
57:): use Apache::lonnavmaps();
1.146 albertel 58: use Apache::lonlocal;
1.344.2.10.4. (raeburn 59:): use LONCAPA qw(:DEFAULT :match);
60:): use LONCAPA::ltiutils();
1.179 albertel 61: use Time::HiRes qw( gettimeofday tv_interval );
1.282 albertel 62: use HTML::Entities();
63: use File::Copy();
1.188 foxr 64:
1.189 albertel 65: # FIXME - improve commenting
1.188 foxr 66:
1.344.2.10.4. (raeburn 67:): my $registered_cleanup;
1.43 albertel 68:
1.69 harris41 69: BEGIN {
1.145 albertel 70: &Apache::lonxml::register_insert();
1.43 albertel 71: }
72:
1.188 foxr 73:
1.276 foxr 74: =pod
75:
76: =item set_bubble_lines()
77:
78: Called at analysis time to set the bubble lines
79: hash for the problem.. This should be called in the
80: end_problemtype tag in analysis mode.
81:
82: We fetch the hash of part id counters from lonxml
83: and push them into analyze:{part_id.bubble_lines}.
84:
85: =cut
86:
87: sub set_bubble_lines {
88: my %bubble_counters = &Apache::lonxml::get_bubble_line_hash();
89:
90: foreach my $key (keys(%bubble_counters)) {
91: $Apache::lonhomework::analyze{"$key.bubble_lines"} =
92: $bubble_counters{"$key"};
93: }
94: }
95:
1.301 jms 96: #
97: # Decides what targets to render for.
98: # Implicit inputs:
99: # Various session environment variables:
100: # request.state - published - is a /res/ resource
101: # uploaded - is a /uploaded/ resource
102: # contruct - is a /priv/ resource
103: # form.grade_target - a form parameter requesting a specific target
1.5 albertel 104: sub get_target {
1.204 albertel 105: &Apache::lonxml::debug("request.state = $env{'request.state'}");
106: if( defined($env{'form.grade_target'})) {
107: &Apache::lonxml::debug("form.grade_target= $env{'form.grade_target'}");
1.188 foxr 108: } else {
1.189 albertel 109: &Apache::lonxml::debug("form.grade_target <undefined>");
1.188 foxr 110: }
1.204 albertel 111: if (($env{'request.state'} eq "published") ||
112: ($env{'request.state'} eq "uploaded")) {
113: if ( defined($env{'form.grade_target'} )
114: && ($env{'form.grade_target'} eq 'tex')) {
115: return ($env{'form.grade_target'});
116: } elsif ( defined($env{'form.grade_target'} )
1.145 albertel 117: && ($Apache::lonhomework::viewgrades eq 'F' )) {
1.207 albertel 118: return ($env{'form.grade_target'});
1.244 albertel 119: } elsif ( $env{'form.grade_target'} eq 'webgrade'
120: && ($Apache::lonhomework::queuegrade eq 'F' )) {
121: return ($env{'form.grade_target'});
1.320 raeburn 122: } elsif ($env{'form.grade_target'} eq 'answer') {
123: if ($env{'form.answer_output_mode'} eq 'tex') {
124: return ($env{'form.grade_target'});
125: }
126: }
1.207 albertel 127: if ($env{'form.webgrade'} &&
1.244 albertel 128: ($Apache::lonhomework::modifygrades eq 'F'
129: || $Apache::lonhomework::queuegrade eq 'F' )) {
1.207 albertel 130: return ('grade','webgrade');
1.145 albertel 131: }
1.204 albertel 132: if ( defined($env{'form.submitted'}) &&
133: ( !defined($env{'form.newrandomization'}))) {
1.217 albertel 134: return ('grade', 'web');
1.145 albertel 135: } else {
1.217 albertel 136: return ('web');
1.145 albertel 137: }
1.204 albertel 138: } elsif ($env{'request.state'} eq "construct") {
1.323 www 139: #
140: # We are in construction space, editing and testing problems
141: #
1.204 albertel 142: if ( defined($env{'form.grade_target'}) ) {
143: return ($env{'form.grade_target'});
1.145 albertel 144: }
1.204 albertel 145: if ( defined($env{'form.preview'})) {
146: if ( defined($env{'form.submitted'})) {
1.323 www 147: #
148: # We are doing a problem preview
149: #
1.145 albertel 150: return ('grade', 'web');
151: } else {
152: return ('web');
153: }
154: } else {
1.267 albertel 155: if ($env{'form.problemstate'} eq 'WEB_GRADE') {
156: return ('grade','webgrade','answer');
1.324 www 157: } elsif ($env{'form.problemmode'} eq 'view') {
158: return ('grade','web','answer');
1.323 www 159: } elsif ($env{'form.problemmode'} eq 'saveview') {
160: return ('modified','web','answer');
161: } elsif ($env{'form.problemmode'} eq 'discard') {
162: return ('web','answer');
163: } elsif (($env{'form.problemmode'} eq 'saveedit') ||
164: ($env{'form.problemmode'} eq 'undo')) {
165: return ('modified','no_output_web','edit');
166: } elsif ($env{'form.problemmode'} eq 'edit') {
167: return ('no_output_web','edit');
1.145 albertel 168: } else {
169: return ('web');
170: }
1.323 www 171: }
172: #
1.338 raeburn 173: # End of Authoring Space
1.323 www 174: #
1.15 albertel 175: }
1.323 www 176: #
177: # Huh? We are nowhere, so do nothing.
178: #
1.145 albertel 179: return ();
1.5 albertel 180: }
181:
1.3 albertel 182: sub setup_vars {
1.145 albertel 183: my ($target) = @_;
184: return ';'
1.11 albertel 185: # return ';$external::target='.$target.';';
1.2 albertel 186: }
187:
1.200 albertel 188: sub proctor_checked_in {
1.226 albertel 189: my ($slot_name,$slot,$type)=@_;
190: my @possible_proctors=split(",",$slot->{'proctor'});
191:
1.248 albertel 192: return 1 if (!@possible_proctors);
193:
1.226 albertel 194: my $key;
195: if ($type eq 'Task') {
1.230 albertel 196: my $version=$Apache::lonhomework::history{'resource.0.version'};
197: $key ="resource.$version.0.checkedin";
1.344.2.10.4. (raeburn 198:): } elsif (($type eq 'problem') || ($type eq 'tool')) {
1.226 albertel 199: $key ='resource.0.checkedin';
200: }
1.249 albertel 201: # backward compatability, used to be username@domain,
202: # now is username:domain
203: my $who = $Apache::lonhomework::history{$key};
204: if ($who !~ /:/) {
205: $who =~ tr/@/:/;
206: }
1.226 albertel 207: foreach my $possible (@possible_proctors) {
1.249 albertel 208: if ($who eq $possible
1.226 albertel 209: && $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
1.202 albertel 210: return 1;
211: }
212: }
1.200 albertel 213: return 0;
214: }
215:
1.226 albertel 216: sub check_slot_access {
1.344.2.4 raeburn 217: my ($id,$type,$symb,$partlist)=@_;
1.226 albertel 218:
1.207 albertel 219: # does it pass normal muster
1.344.2.4 raeburn 220: my ($status,$datemsg)=&check_access($id,$symb);
1.344.2.10.4. (raeburn 221:):
1.344.2.4 raeburn 222: my $useslots = &Apache::lonnet::EXT("resource.0.useslots",$symb);
1.251 albertel 223: if ($useslots ne 'resource' && $useslots ne 'map'
224: && $useslots ne 'map_map') {
1.226 albertel 225: return ($status,$datemsg);
226: }
227:
1.200 albertel 228: if ($status eq 'SHOW_ANSWER' ||
229: $status eq 'CLOSED' ||
230: $status eq 'INVALID_ACCESS' ||
231: $status eq 'UNAVAILABLE') {
232: return ($status,$datemsg);
233: }
1.204 albertel 234: if ($env{'request.state'} eq "construct") {
1.203 albertel 235: return ($status,$datemsg);
236: }
1.226 albertel 237:
238: if ($type eq 'Task') {
239: my $version=$Apache::lonhomework::history{'resource.version'};
1.230 albertel 240: if ($Apache::lonhomework::history{"resource.$version.0.checkedin"} &&
241: $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') {
1.226 albertel 242: return ('SHOW_ANSWER');
243: }
1.344.2.10 raeburn 244: } elsif (($type eq 'problem') &&
245: ($Apache::lonhomework::browse eq 'F') &&
246: ($ENV{'REMOTE_ADDR'} eq '127.0.0.1') &&
247: ($env{'form.grade_courseid'} eq $env{'request.course.id'}) &&
248: (&Apache::lonnet::allowed('mgr',$env{'request.course.id'}))) {
249: return ($status,$datemsg);
1.207 albertel 250: }
1.226 albertel 251:
1.344.2.4 raeburn 252: my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent",$symb);
253: my $available = &Apache::lonnet::EXT("resource.0.available",$symb);
1.288 raeburn 254: my @slots= (split(':',$availablestudent),split(':',$available));
1.210 albertel 255:
1.200 albertel 256: # if (!@slots) {
257: # return ($status,$datemsg);
258: # }
259: my $slotstatus='NOT_IN_A_SLOT';
1.206 albertel 260: my ($returned_slot,$slot_name);
1.334 raeburn 261: my $now = time;
262: my $num_usable_slots = 0;
1.344.2.4 raeburn 263: unless ($symb) {
264: ($symb) = &Apache::lonnet::whichuser();
265: }
1.210 albertel 266: foreach my $slot (@slots) {
1.241 albertel 267: $slot =~ s/(^\s*|\s*$)//g;
1.201 albertel 268: &Apache::lonxml::debug("getting $slot");
1.200 albertel 269: my %slot=&Apache::lonnet::get_slot($slot);
1.201 albertel 270: &Apache::lonhomework::showhash(%slot);
1.334 raeburn 271: next if ($slot{'endtime'} < $now);
272: $num_usable_slots ++;
273: if ($slot{'starttime'} < $now &&
274: $slot{'endtime'} > $now &&
1.297 raeburn 275: &Apache::loncommon::check_ip_acc($slot{'ip'})) {
1.202 albertel 276: &Apache::lonxml::debug("$slot is good");
277: $slotstatus='NEEDS_CHECKIN';
278: $returned_slot=\%slot;
1.206 albertel 279: $slot_name=$slot;
1.200 albertel 280: last;
1.334 raeburn 281: }
1.200 albertel 282: }
1.202 albertel 283: if ($slotstatus eq 'NEEDS_CHECKIN' &&
1.226 albertel 284: &proctor_checked_in($slot_name,$returned_slot,$type)) {
1.322 raeburn 285: &Apache::lonxml::debug("proctor checked in");
286: $slotstatus=$status;
1.200 albertel 287: }
1.226 albertel 288:
1.344.2.4 raeburn 289: my ($is_correct,$got_grade,$checkin,$checkinslot,$checkedin,$consumed_uniq);
1.226 albertel 290: if ($type eq 'Task') {
1.230 albertel 291: my $version=$Apache::lonhomework::history{'resource.0.version'};
1.344.2.4 raeburn 292: $checkin = "resource.$version.0.checkedin";
1.231 albertel 293: $got_grade =
294: ($Apache::lonhomework::history{"resource.$version.0.status"}
295: =~ /^(?:pass|fail)$/);
1.235 albertel 296: $is_correct =
297: ($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass'
298: || $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ );
1.226 albertel 299: $checkedin =
1.230 albertel 300: $Apache::lonhomework::history{"resource.$version.0.checkedin"};
1.344.2.10.4. (raeburn 301:): } elsif (($type eq 'problem') || ($type eq 'tool')) {
1.344.2.4 raeburn 302: $checkin = 'resource.0.checkedin';
303: $checkedin = $Apache::lonhomework::history{$checkin};
1.344.2.3 raeburn 304: }
305: if ($checkedin) {
306: $checkinslot = $Apache::lonhomework::history{"$checkin.slot"};
307: my %slot=&Apache::lonnet::get_slot($checkinslot);
308: $consumed_uniq = $slot{'uniqueperiod'};
309: }
1.344.2.10.4. (raeburn 310:): if (($type eq 'problem') || ($type eq 'tool')) {
1.344.2.3 raeburn 311: if ((ref($partlist) eq 'ARRAY') && (@{$partlist} > 0)) {
312: my ($numcorrect,$numgraded) = (0,0);
313: foreach my $part (@{$partlist}) {
314: my $currtries = $Apache::lonhomework::history{"resource.$part.tries"};
315: my $maxtries = &Apache::lonnet::EXT("resource.$part.maxtries",$symb);
316: my $probstatus = &Apache::structuretags::get_problem_status($part);
317: my $earlyout;
318: unless (($probstatus eq 'no') ||
319: ($probstatus eq 'no_feedback_ever')) {
320: if ($Apache::lonhomework::history{"resource.$part.solved"} =~/^correct_/) {
321: $numcorrect ++;
322: } else {
323: $earlyout = 1;
324: }
325: }
1.344.2.10 raeburn 326: if ($currtries == $maxtries) {
1.344.2.3 raeburn 327: $earlyout = 1;
328: } else {
329: $numgraded ++;
330: }
331: last if ($earlyout);
332: }
333: my $numparts = scalar(@{$partlist});
334: if ($numparts == $numcorrect) {
335: $is_correct = 1;
336: }
337: if ($numparts == $numgraded) {
338: $got_grade = 1;
339: }
340: } else {
341: my $currtries = $Apache::lonhomework::history{"resource.0.tries"};
342: my $maxtries = &Apache::lonnet::EXT("resource.0.maxtries",$symb);
343: my $probstatus = &Apache::structuretags::get_problem_status('0');
344: unless (($probstatus eq 'no') ||
345: ($probstatus eq 'no_feedback_ever')) {
346: $is_correct =
347: ($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/);
348: }
349: unless (($currtries == $maxtries) || ($is_correct)) {
350: $got_grade = 1;
351: }
352: }
1.226 albertel 353: }
354:
1.235 albertel 355: &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
356:
1.243 albertel 357: # no slot is currently open, and has been checked in for this version
358: # but hasn't got a grade, therefore must be awaiting a grade
359: if (!defined($slot_name)
360: && $checkedin
1.236 albertel 361: && !$got_grade) {
362: return ('WAITING_FOR_GRADE');
363: }
364:
1.309 raeburn 365: # Previously used slot is no longer open, and has been checked in for this version.
366: # However, the problem is not closed, and potentially, another slot might be
367: # used to gain access to it to work on it, until the due date is reached, and the
368: # problem then becomes CLOSED. Therefore return the slotstatus -
1.344.2.10.4. (raeburn 369:): # (which will be one of: NOT_IN_A_SLOT, RESERVABLE, RESERVABLE_LATER, or NOTRESERVABLE).
370:):
371:): if (!defined($slot_name) && (($type eq 'problem') || ($type eq 'tool'))) {
1.334 raeburn 372: if ($slotstatus eq 'NOT_IN_A_SLOT') {
373: if (!$num_usable_slots) {
374: if ($env{'request.course.id'}) {
375: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
376: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
377: $slotstatus = 'NOTRESERVABLE';
378: my ($reservable_now_order,$reservable_now,$reservable_future_order,
379: $reservable_future) =
380: &Apache::loncommon::get_future_slots($cnum,$cdom,$now,$symb);
381: if ((ref($reservable_now_order) eq 'ARRAY') && (ref($reservable_now) eq 'HASH')) {
382: if (@{$reservable_now_order} > 0) {
1.344.2.3 raeburn 383: if ((!$checkedin) || (ref($consumed_uniq) ne 'ARRAY')) {
384: $slotstatus = 'RESERVABLE';
385: $datemsg = $reservable_now->{$reservable_now_order->[-1]}{'endreserve'};
386: } else {
387: my ($uniqstart,$uniqend,$useslot);
388: if (ref($consumed_uniq) eq 'ARRAY') {
389: ($uniqstart,$uniqend)=@{$consumed_uniq};
390: }
391: foreach my $slot (reverse(@{$reservable_now_order})) {
392: if ($reservable_now->{$slot}{'uniqueperiod'} =~ /^(\d+)\,(\d+)$/) {
393: my ($new_uniq_start,$new_uniq_end) = ($1,$2);
394: next if (!
395: ($uniqstart < $new_uniq_start && $uniqend < $new_uniq_start) ||
396: ($uniqstart > $new_uniq_end && $uniqend > $new_uniq_end ));
397: }
398: $useslot = $slot;
399: last;
400: }
401: if ($useslot) {
402: $slotstatus = 'RESERVABLE';
403: $datemsg = $reservable_now->{$useslot}{'endreserve'};
404: }
405: }
1.334 raeburn 406: }
407: }
408: unless ($slotstatus eq 'RESERVABLE') {
409: if ((ref($reservable_future_order) eq 'ARRAY') && (ref($reservable_future) eq 'HASH')) {
410: if (@{$reservable_future_order} > 0) {
1.344.2.3 raeburn 411: if ((!$checkedin) || (ref($consumed_uniq) ne 'ARRAY')) {
412: $slotstatus = 'RESERVABLE_LATER';
413: $datemsg = $reservable_future->{$reservable_future_order->[0]}{'startreserve'};
414: } else {
415: my ($uniqstart,$uniqend,$useslot);
416: if (ref($consumed_uniq) eq 'ARRAY') {
417: ($uniqstart,$uniqend)=@{$consumed_uniq};
418: }
419: foreach my $slot (@{$reservable_future_order}) {
420: if ($reservable_future->{$slot}{'uniqueperiod'} =~ /^(\d+),(\d+)$/) {
421: my ($new_uniq_start,$new_uniq_end) = ($1,$2);
422: next if (!
423: ($uniqstart < $new_uniq_start && $uniqend < $new_uniq_start) ||
424: ($uniqstart > $new_uniq_end && $uniqend > $new_uniq_end ));
425: }
426: $useslot = $slot;
427: last;
428: }
429: if ($useslot) {
430: $slotstatus = 'RESERVABLE_LATER';
431: $datemsg = $reservable_future->{$useslot}{'startreserve'};
432: }
433: }
1.334 raeburn 434: }
435: }
436: }
437: }
438: }
439: }
440: return ($slotstatus,$datemsg);
1.252 albertel 441: }
442:
1.226 albertel 443: if ($slotstatus eq 'NOT_IN_A_SLOT'
444: && $checkedin ) {
445:
1.231 albertel 446: if ($got_grade) {
1.209 albertel 447: return ('SHOW_ANSWER');
448: } else {
449: return ('WAITING_FOR_GRADE');
450: }
1.226 albertel 451:
1.207 albertel 452: }
1.255 albertel 453:
1.235 albertel 454: if ( $is_correct) {
1.344.2.10.4. (raeburn 455:): if (($type eq 'problem') || ($type eq 'tool')) {
1.255 albertel 456: return ($status);
457: }
1.235 albertel 458: return ('SHOW_ANSWER');
459: }
1.255 albertel 460:
1.225 albertel 461: if ( $status eq 'CANNOT_ANSWER' &&
462: ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) {
463: return ($status,$datemsg);
464: }
465:
1.206 albertel 466: return ($slotstatus,$datemsg,$slot_name,$returned_slot);
1.198 albertel 467: }
1.200 albertel 468:
1.301 jms 469: # JB, 9/24/2002: Any changes in this function may require a change
470: # in lonnavmaps::resource::getDateStatus.
1.53 www 471: sub check_access {
1.344.2.4 raeburn 472: my ($id,$symb) = @_;
1.145 albertel 473: my $date ='';
474: my $status;
475: my $datemsg = '';
476: my $lastdate = '';
477: my $type;
478: my $passed;
479:
1.204 albertel 480: if ($env{'request.state'} eq "construct") {
481: if ($env{'form.problemstate'}) {
482: if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
1.277 albertel 483: if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct'
484: && &hide_problem_status())) {
1.168 albertel 485: return ('CANNOT_ANSWER',
1.174 www 486: &mt('is in this state due to author settings.'));
1.167 albertel 487: }
1.165 albertel 488: } else {
1.204 albertel 489: return ($env{'form.problemstate'},
1.174 www 490: &mt('is in this state due to author settings.'));
1.165 albertel 491: }
492: }
1.145 albertel 493: &Apache::lonxml::debug("in construction ignoring dates");
494: $status='CAN_ANSWER';
1.146 albertel 495: $datemsg=&mt('is in under construction');
1.163 albertel 496: # return ($status,$datemsg);
1.145 albertel 497: }
498:
499: &Apache::lonxml::debug("checking for part :$id:");
500: &Apache::lonxml::debug("time:".time);
1.152 albertel 501:
1.344.2.4 raeburn 502: unless ($symb) {
503: ($symb)=&Apache::lonnet::whichuser();
504: }
1.212 albertel 505: &Apache::lonxml::debug("symb:".$symb);
506: #if ($env{'request.state'} ne "construct" && $symb ne '') {
1.204 albertel 507: if ($env{'request.state'} ne "construct") {
1.344.2.4 raeburn 508: my $idacc = &Apache::lonnet::EXT("resource.$id.acc",$symb);
1.297 raeburn 509: my $allowed=&Apache::loncommon::check_ip_acc($idacc);
1.163 albertel 510: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
511: $status='INVALID_ACCESS';
512: $date=&mt("can not be accessed from your location.");
1.145 albertel 513: return($status,$date);
514: }
1.327 raeburn 515: if ($env{'form.grade_imsexport'}) {
516: if (($env{'request.course.id'}) &&
517: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
518: return ('SHOW_ANSWER');
519: }
520: }
1.226 albertel 521: foreach my $temp ("opendate","duedate","answerdate") {
1.163 albertel 522: $lastdate = $date;
1.247 albertel 523: if ($temp eq 'duedate') {
1.344.2.4 raeburn 524: $date = &due_date($id,$symb);
1.247 albertel 525: } else {
1.344.2.4 raeburn 526: $date = &Apache::lonnet::EXT("resource.$id.$temp",$symb);
1.247 albertel 527: }
528:
1.344.2.4 raeburn 529: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type",$symb);
1.163 albertel 530: if ($thistype =~ /^(con_lost|no_such_host)/ ||
531: $date =~ /^(con_lost|no_such_host)/) {
532: $status='UNAVAILABLE';
533: $date=&mt("may open later.");
534: return($status,$date);
535: }
536: if ($thistype eq 'date_interval') {
537: if ($temp eq 'opendate') {
1.344.2.4 raeburn 538: $date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)-$date;
1.163 albertel 539: }
540: if ($temp eq 'answerdate') {
1.344.2.4 raeburn 541: $date=&Apache::lonnet::EXT("resource.$id.duedate",$symb)+$date;
1.163 albertel 542: }
1.145 albertel 543: }
1.163 albertel 544: &Apache::lonxml::debug("found :$date: for :$temp:");
545: if ($date eq '') {
546: $date = &mt("an unknown date"); $passed = 0;
547: } elsif ($date eq 'con_lost') {
548: $date = &mt("an indeterminate date"); $passed = 0;
549: } else {
550: if (time < $date) { $passed = 0; } else { $passed = 1; }
1.274 www 551: $date = &Apache::lonlocal::locallocaltime($date);
1.145 albertel 552: }
1.163 albertel 553: if (!$passed) { $type=$temp; last; }
1.145 albertel 554: }
1.163 albertel 555: &Apache::lonxml::debug("have :$type:$passed:");
556: if ($passed) {
557: $status='SHOW_ANSWER';
558: $datemsg=$date;
559: } elsif ($type eq 'opendate') {
560: $status='CLOSED';
1.343 bisitz 561: $datemsg = &mt('will open on [_1]',$date);
1.163 albertel 562: } elsif ($type eq 'duedate') {
563: $status='CAN_ANSWER';
1.343 bisitz 564: $datemsg = &mt('is due at [_1]',$date);
1.163 albertel 565: } elsif ($type eq 'answerdate') {
566: $status='CLOSED';
1.343 bisitz 567: $datemsg = &mt('was due on [_1], and answers will be available on [_2]',
568: $lastdate,$date);
1.145 albertel 569: }
570: }
1.212 albertel 571: if ($status eq 'CAN_ANSWER' ||
572: (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
1.145 albertel 573: #check #tries, and if correct.
574: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
1.344.2.4 raeburn 575: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries",$symb);
1.145 albertel 576: if ( $tries eq '' ) { $tries = '0'; }
1.164 albertel 577: if ( $maxtries eq '' &&
1.204 albertel 578: $env{'request.state'} ne 'construct') { $maxtries = '2'; }
1.164 albertel 579: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
1.145 albertel 580: # if (correct and show prob status) or excused then CANNOT_ANSWER
1.331 raeburn 581: if ( ($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/)
582: && (&show_problem_status()) ) {
1.333 raeburn 583: if (($Apache::lonhomework::history{"resource.$id.awarded"} >= 1) ||
1.344.2.4 raeburn 584: (&Apache::lonnet::EXT("resource.$id.retrypartial",$symb) !~/^1|on|yes$/i)) {
1.331 raeburn 585: $status = 'CANNOT_ANSWER';
586: }
587: } elsif ($Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
1.145 albertel 588: $status = 'CANNOT_ANSWER';
589: }
1.285 albertel 590: if ($status eq 'CANNOT_ANSWER'
591: && &show_answer_problem_status()) {
592: $status = 'SHOW_ANSWER';
593: }
1.121 albertel 594: }
1.181 albertel 595: if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
1.344.2.4 raeburn 596: my @interval=&Apache::lonnet::EXT("resource.$id.interval",$symb);
1.286 albertel 597: &Apache::lonxml::debug("looking for interval @interval");
598: if ($interval[0]) {
1.344.2.4 raeburn 599: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
1.177 albertel 600: &Apache::lonxml::debug("looking for accesstime $first_access");
601: if (!$first_access) {
602: $status='NOT_YET_VIEWED';
1.344.2.4 raeburn 603: my $due_date = &due_date($id,$symb);
1.256 albertel 604: my $seconds_left = $due_date - time;
1.286 albertel 605: if ($seconds_left > $interval[0] || $due_date eq '') {
606: $seconds_left = $interval[0];
1.256 albertel 607: }
608: $datemsg=&seconds_to_human_length($seconds_left);
1.177 albertel 609: }
610: }
611: }
1.247 albertel 612:
1.133 albertel 613: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
614: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
615: # return ('UNCHECKEDOUT','needs to be checked out');
616: #}
1.54 www 617:
1.145 albertel 618: &Apache::lonxml::debug("sending back :$status:$datemsg:");
619: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
620: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
621: $status='CAN_ANSWER';
1.146 albertel 622: $datemsg=&mt('is closed but you are allowed to view it');
1.145 albertel 623: }
1.106 albertel 624:
1.145 albertel 625: return ($status,$datemsg);
1.20 albertel 626: }
1.301 jms 627: # this should work exactly like the copy in lonnavmaps.pm
1.246 albertel 628: sub due_date {
1.250 albertel 629: my ($part_id,$symb,$udom,$uname)=@_;
1.246 albertel 630: my $date;
1.286 albertel 631: my @interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
1.250 albertel 632: $udom,$uname);
1.286 albertel 633: &Apache::lonxml::debug("looking for interval $part_id $symb @interval");
1.250 albertel 634: my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
635: $udom,$uname);
1.247 albertel 636: &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
1.286 albertel 637: if ($interval[0] =~ /\d+/) {
638: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
639: &Apache::lonxml::debug("looking for first_access $first_access ($interval[1])");
1.247 albertel 640: if (defined($first_access)) {
1.286 albertel 641: my $interval = $first_access+$interval[0];
1.283 albertel 642: $date = (!$due_date || $interval < $due_date) ? $interval
643: : $due_date;
1.247 albertel 644: } else {
645: $date = $due_date;
646: }
647: } else {
648: $date = $due_date;
1.246 albertel 649: }
1.344.2.1 raeburn 650: return $date;
1.246 albertel 651: }
652:
1.192 albertel 653: sub seconds_to_human_length {
654: my ($length)=@_;
655:
656: my $seconds=$length%60; $length=int($length/60);
657: my $minutes=$length%60; $length=int($length/60);
658: my $hours=$length%24; $length=int($length/24);
659: my $days=$length;
660:
661: my $timestr;
662: if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
663: if ($hours > 0) { $timestr.=($timestr?", ":"").
664: &mt('[quant,_1,hour]',$hours); }
665: if ($minutes > 0) { $timestr.=($timestr?", ":"").
666: &mt('[quant,_1,minute]',$minutes); }
667: if ($seconds > 0) { $timestr.=($timestr?", ":"").
668: &mt('[quant,_1,second]',$seconds); }
669: return $timestr;
670: }
671:
1.41 albertel 672: sub showhash {
1.145 albertel 673: my (%hash) = @_;
674: &showhashsubset(\%hash,'.');
675: return '';
1.79 albertel 676: }
677:
1.106 albertel 678: sub showarray {
679: my ($array)=@_;
680: my $string="(";
681: foreach my $elm (@{ $array }) {
1.193 albertel 682: if (ref($elm) eq 'ARRAY') {
683: $string.=&showarray($elm);
684: } elsif (ref($elm) eq 'HASH') {
685: $string.= "HASH --- \n<br />";
686: $string.= &showhashsubset($elm,'.');
1.106 albertel 687: } else {
688: $string.="$elm,"
689: }
690: }
691: chop($string);
692: $string.=")";
693: return $string;
694: }
695:
1.79 albertel 696: sub showhashsubset {
1.145 albertel 697: my ($hash,$keyre) = @_;
698: my $resultkey;
1.344.2.1 raeburn 699: foreach $resultkey (sort(keys(%$hash))) {
1.193 albertel 700: if ($resultkey !~ /$keyre/) { next; }
701: if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
702: &Apache::lonxml::debug("$resultkey ---- ".
703: &showarray($$hash{$resultkey}));
704: } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
705: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
706: &showhashsubset($$hash{$resultkey},'.');
707: } else {
708: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.145 albertel 709: }
710: }
711: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
712: return '';
1.41 albertel 713: }
714:
715: sub setuppermissions {
1.204 albertel 716: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
1.337 raeburn 717: unless ($Apache::lonhomework::browse eq 'F') {
718: $Apache::lonhomework::browse=&Apache::lonnet::allowed('bro',$env{'request.filename'});
719: }
1.204 albertel 720: my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1.145 albertel 721: if (! $viewgrades &&
1.204 albertel 722: exists($env{'request.course.sec'}) &&
723: $env{'request.course.sec'} !~ /^\s*$/) {
724: $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
725: '/'.$env{'request.course.sec'});
1.344.2.10.4. (raeburn 726:): if ($viewgrades) {
727:): $Apache::lonhomework::viewgradessec = $env{'request.course.sec'};
728:): }
1.145 albertel 729: }
1.244 albertel 730: $Apache::lonhomework::viewgrades = $viewgrades;
731:
1.185 albertel 732: if ($Apache::lonhomework::browse eq 'F' &&
1.204 albertel 733: $env{'form.devalidatecourseresdata'} eq 'on') {
1.261 albertel 734: my (undef,$courseid) = &Apache::lonnet::whichuser();
1.204 albertel 735: &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
736: $env{"course.$courseid.domain"});
1.185 albertel 737: }
1.244 albertel 738:
1.205 albertel 739: my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
740: if (! $modifygrades &&
741: exists($env{'request.course.sec'}) &&
742: $env{'request.course.sec'} !~ /^\s*$/) {
743: $modifygrades =
744: &Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
745: '/'.$env{'request.course.sec'});
1.344.2.10.4. (raeburn 746:): if ($modifygrades) {
747:): $Apache::lonhomework::modifygradessec = $env{'request.course.sec'};
748:): }
1.205 albertel 749: }
750: $Apache::lonhomework::modifygrades = $modifygrades;
1.244 albertel 751:
752: my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'});
753: if (! $queuegrade &&
754: exists($env{'request.course.sec'}) &&
755: $env{'request.course.sec'} !~ /^\s*$/) {
756: $queuegrade =
757: &Apache::lonnet::allowed('qgr',$env{'request.course.id'}.
758: '/'.$env{'request.course.sec'});
759: }
760: $Apache::lonhomework::queuegrade = $queuegrade;
1.205 albertel 761: return '';
1.41 albertel 762: }
763:
1.253 albertel 764: sub unset_permissions {
765: undef($Apache::lonhomework::queuegrade);
766: undef($Apache::lonhomework::modifygrades);
1.344.2.10.4. (raeburn 767:): undef($Apache::lonhomework::modifygradessec);
1.253 albertel 768: undef($Apache::lonhomework::viewgrades);
1.344.2.10.4. (raeburn 769:): undef($Apache::lonhomework::viewgradessec);
1.253 albertel 770: undef($Apache::lonhomework::browse);
771: }
772:
1.41 albertel 773: sub setupheader {
1.120 albertel 774: my $request=$_[0];
1.197 albertel 775: &Apache::loncommon::content_type($request,'text/html');
1.120 albertel 776: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
777: &Apache::loncommon::no_cache($request);
778: }
1.196 albertel 779: # $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
780: # 'lastrevisiondate'));
1.120 albertel 781: $request->send_http_header;
782: return OK if $request->header_only;
783: return ''
1.41 albertel 784: }
1.35 albertel 785:
1.47 albertel 786: sub handle_save_or_undo {
1.338 raeburn 787: my ($request,$problem,$result,$getobjref) = @_;
1.323 www 788:
1.145 albertel 789: my $file = &Apache::lonnet::filelocation("",$request->uri);
790: my $filebak =$file.".bak";
791: my $filetmp =$file.".tmp";
792: my $error=0;
1.323 www 793: if (($env{'form.problemmode'} eq 'undo') || ($env{'form.problemmode'} eq 'undoxml')) {
1.145 albertel 794: my $error=0;
1.284 albertel 795: if (!&File::Copy::copy($file,$filetmp)) { $error=1; }
796: if ((!$error) && (!&File::Copy::copy($filebak,$file))) { $error=1; }
797: if ((!$error) && (!&File::Copy::move($filetmp,$filebak))) { $error=1; }
1.145 albertel 798: if (!$error) {
1.266 albertel 799: &Apache::lonxml::info("<p><b>".
800: &mt("Undid changes, Switched [_1] and [_2]",
801: '<span class="LC_filename">'.$filebak.
802: '</span>',
803: '<span class="LC_filename">'.$file.
804: '</span>')."</b></p>");
1.145 albertel 805: } else {
1.266 albertel 806: &Apache::lonxml::info("<p><span class=\"LC_error\">".
807: &mt("Unable to undo, unable to switch [_1] and [_2]",
808: '<span class="LC_filename">'.
809: $filebak.'</span>',
810: '<span class="LC_filename">'.
811: $file.'</span>')."</span></p>");
1.145 albertel 812: $error=1;
813: }
1.52 albertel 814: } else {
1.262 banghart 815: &Apache::lonnet::correct_line_ends($result);
1.323 www 816:
1.145 albertel 817: my $fs=Apache::File->new(">$filebak");
818: if (defined($fs)) {
819: print $fs $$problem;
820: } else {
1.266 albertel 821: &Apache::lonxml::info("<span class=\"LC_error\">".
822: &mt("Unable to make backup [_1]",
823: '<span class="LC_filename">'.
824: $filebak.'</span>')."</span>");
1.145 albertel 825: $error=2;
826: }
827: my $fh=Apache::File->new(">$file");
828: if (defined($fh)) {
829: print $fh $$result;
1.338 raeburn 830: if (ref($getobjref) eq 'SCALAR') {
831: if ($file =~ m{([^/]+)\.(html?)$}) {
832: my $fname = $1;
833: my $ext = $2;
834: my $path = $file;
835: $path =~ s/\Q$fname\E\.\Q$ext\E$//;
836: my (%allfiles,%codebase);
837: &Apache::lonnet::extract_embedded_items($file,\%allfiles,
838: \%codebase,$result);
839: if (keys(%allfiles) > 0) {
840: my $url = $request->uri;
841: my $state = <<STATE;
842: <input type="hidden" name="action" value="upload_embedded" />
843: <input type="hidden" name="url" value="$url" />
844: STATE
845: $$getobjref = "<h3>".&mt("Reference Warning")."</h3>".
846: "<p>".&mt("Completed upload of the file. This file contained references to other files.")."</p>".
847: "<p>".&mt("Please select the locations from which the referenced files are to be uploaded.")."</p>".
848: &Apache::loncommon::ask_for_embedded_content($url,$state,\%allfiles,\%codebase,
849: {'error_on_invalid_names' => 1,
850: 'ignore_remote_references' => 1,});
851: }
852: }
853: }
1.145 albertel 854: } else {
1.266 albertel 855: &Apache::lonxml::info('<span class="LC_error">'.
856: &mt("Unable to write to [_1]",
857: '<span class="LC_filename">'.
858: $file.'</span>').
859: '</span>');
1.145 albertel 860: $error|=4;
861: }
1.52 albertel 862: }
1.145 albertel 863: return $error;
1.64 albertel 864: }
865:
1.101 albertel 866: sub analyze_header {
867: my ($request) = @_;
1.344.2.10.4. (raeburn 868:): my $js = &Apache::lonxml::setmode_javascript();
1.312 bisitz 869:
870: # Breadcrumbs
1.330 raeburn 871: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1.338 raeburn 872: 'text' => 'Authoring Space'},
1.312 bisitz 873: {'href' => '',
874: 'text' => 'Problem Testing'},
875: {'href' => '',
876: 'text' => 'Analyzing a problem'}];
877:
1.238 albertel 878: my $result =
1.312 bisitz 879: &Apache::loncommon::start_page('Analyzing a problem',
880: $js,
881: {'bread_crumbs' => $brcrum,})
1.311 bisitz 882: .&Apache::loncommon::head_subbox(
883: &Apache::loncommon::CSTR_pageheader());
1.238 albertel 884: $result .=
1.344.2.5 raeburn 885: '<form name="lonhomework" method="post" action="'.
1.204 albertel 886: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.289 raeburn 887: '<input type="hidden" name="problemmode" value="'.
888: $env{'form.problemmode'}.'" />'.
1.179 albertel 889: &Apache::structuretags::remember_problem_state().'
1.278 albertel 890: <div class="LC_edit_problem_analyze_header">
1.289 raeburn 891: <input type="button" name="submitmode" value="'.&mt("EditXML").'" '.
892: 'onclick="javascript:setmode(this.form,'."'editxml'".')" />
893: <input type="button" name="submitmode" value="'.&mt('Edit').'" '.
894: 'onclick="javascript:setmode(this.form,'."'edit'".')" />
1.313 bisitz 895: <hr />
1.289 raeburn 896: <input type="button" name="submitmode" value="'.&mt("View").'" '.
897: 'onclick="javascript:setmode(this.form,'."'view'".')" />
1.313 bisitz 898: <hr />
1.344.2.5 raeburn 899: </div>'
900: .&Apache::lonxml::message_location().'
1.101 albertel 901: </form>';
1.171 albertel 902: &Apache::lonxml::add_messages(\$result);
1.101 albertel 903: $request->print($result);
904: $request->rflush();
905: }
906:
1.109 albertel 907: sub analyze_footer {
908: my ($request) = @_;
1.237 albertel 909: $request->print(&Apache::loncommon::end_page());
1.109 albertel 910: $request->rflush();
911: }
912:
1.74 albertel 913: sub analyze {
1.101 albertel 914: my ($request,$file) = @_;
915: &Apache::lonxml::debug("Analyze");
916: my $result;
917: my %overall;
1.219 www 918: my %seedexample;
1.101 albertel 919: my %allparts;
1.204 albertel 920: my $rndseed=$env{'form.rndseed'};
1.101 albertel 921: &analyze_header($request);
1.114 albertel 922: my %prog_state=
1.335 www 923: &Apache::lonhtmlcommon::Create_PrgWin($request,$env{'form.numtoanalyze'});
1.204 albertel 924: for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
1.335 www 925: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,'last problem');
1.182 albertel 926: if (&Apache::loncommon::connection_aborted($request)) { return; }
1.219 www 927: my $thisseed=$i+$rndseed;
1.101 albertel 928: my $subresult=&Apache::lonnet::ssi($request->uri,
929: ('grade_target' => 'analyze'),
1.219 www 930: ('rndseed' => $thisseed));
1.101 albertel 931: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
932: my %analyze=&Apache::lonnet::str2hash($subresult);
1.114 albertel 933: my @parts;
1.336 raeburn 934: if (ref($analyze{'parts'}) eq 'ARRAY') {
1.114 albertel 935: @parts=@{ $analyze{'parts'} };
936: }
1.101 albertel 937: foreach my $part (@parts) {
938: if (!exists($allparts{$part})) {$allparts{$part}=1;};
1.109 albertel 939: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
940: $analyze{$part.'.type'} eq 'stringresponse' ||
941: $analyze{$part.'.type'} eq 'formularesponse' ) {
1.263 albertel 942: foreach my $name (keys(%{ $analyze{$part.'.answer'} })) {
943: my $i=0;
944: foreach my $answer_part (@{ $analyze{$part.'.answer'}{$name} }) {
945: push( @{ $overall{$part.'.answer'}[$i] },
946: $answer_part);
947: my $concatanswer= join("\0",@{ $answer_part });
948: if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
1.266 albertel 949: $answer_part = ['<span class="LC_error">'.&mt('Error').'</span>'];
1.263 albertel 950: }
951: $seedexample{join("\0",$part,$i,@{$answer_part})}=
952: $thisseed;
953: $i++;
954: }
1.219 www 955: }
1.275 albertel 956: if (!keys(%{ $analyze{$part.'.answer'} })) {
957: my $answer_part =
958: ['<span class="LC_error">'.&mt('Error').'</span>'];
959: $seedexample{join("\0",$part,0,@{$answer_part})}=
960: $thisseed;
961: push( @{ $overall{$part.'.answer'}[0] },
962: $answer_part);
963: }
1.101 albertel 964: }
965: }
966: }
1.335 www 967: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,&mt('Analyzing Results'));
1.313 bisitz 968: $request->print('<hr />'
1.308 bisitz 969: .'<h3>'
970: .&mt('List of possible answers')
971: .'</h3>'
972: );
1.134 albertel 973: foreach my $part (sort(keys(%allparts))) {
1.336 raeburn 974: if ((ref($overall{$part.'.answer'}) eq 'ARRAY') &&
975: (@{$overall{$part.'.answer'}} > 0)) {
1.263 albertel 976: for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
977: my $num_cols=scalar(@{ $overall{$part.'.answer'}[$i][0] });
1.308 bisitz 978: $request->print(&Apache::loncommon::start_data_table()
979: .&Apache::loncommon::start_data_table_header_row()
980: .'<th colspan="'.($num_cols+1).'">'
981: .&mt('Part').' '.$part
982: );
1.263 albertel 983: if (scalar(@{ $overall{$part.'.answer'} }) > 1) {
1.308 bisitz 984: $request->print(' '.&mt('Answer [_1]',$i+1));
1.263 albertel 985: }
1.308 bisitz 986: $request->print('</th>'
987: .&Apache::loncommon::end_data_table_header_row()
988: );
1.263 albertel 989: my %frequency;
990: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) {
991: $frequency{join("\0",@{ $answer })}++;
992: }
1.308 bisitz 993: $request->print(&Apache::loncommon::start_data_table_header_row()
994: .'<th colspan="'.($num_cols).'">'.&mt('Answer').'</th>'
995: .'<th>'.&mt('Frequency').'<br />'
996: .'('.&mt('click for example').')</th>'
997: .&Apache::loncommon::end_data_table_header_row()
998: );
1.263 albertel 999: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
1.308 bisitz 1000: $request->print(&Apache::loncommon::start_data_table_row()
1001: .'<td>'
1002: .join('</td><td>',split("\0",$answer))
1003: .'</td>'
1004: .'<td>'
1005: .'<a href="'.$request->uri.'?rndseed='.$seedexample{join("\0",$part,$i,$answer)}.'">'.$frequency{$answer}.'</a>'
1006: .'</td>'
1007: .&Apache::loncommon::end_data_table_row()
1008: );
1.263 albertel 1009: }
1.308 bisitz 1010: $request->print(&Apache::loncommon::end_data_table());
1.109 albertel 1011: }
1012: } else {
1.307 bisitz 1013: $request->print('<p class="LC_warning">'
1014: .&mt('Response [_1] is not analyzable at this time.',$part)
1015: .'</p>'
1016: );
1.101 albertel 1017: }
1018: }
1.130 albertel 1019: if (scalar(keys(%allparts)) == 0 ) {
1.307 bisitz 1020: $request->print('<p class="LC_warning">'
1021: .&mt('Found no analyzable responses in this problem.'
1022: .' Currently only Numerical, Formula and String response styles are supported.')
1023: .'</p>'
1024: );
1.130 albertel 1025: }
1.114 albertel 1026: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1.109 albertel 1027: &analyze_footer($request);
1.101 albertel 1028: &Apache::lonhomework::showhash(%overall);
1029: return $result;
1.74 albertel 1030: }
1031:
1.277 albertel 1032: {
1033: my $show_problem_status;
1034: sub reset_show_problem_status {
1035: undef($show_problem_status);
1036: }
1037:
1038: sub set_show_problem_status {
1039: my ($new_status) = @_;
1040: $show_problem_status = lc($new_status);
1041: }
1042:
1043: sub hide_problem_status {
1044: return ($show_problem_status eq 'no'
1045: || $show_problem_status eq 'no_feedback_ever');
1046: }
1047:
1048: sub show_problem_status {
1049: return ($show_problem_status eq 'yes'
1.285 albertel 1050: || $show_problem_status eq 'answer'
1.277 albertel 1051: || $show_problem_status eq '');
1052: }
1053:
1054: sub show_some_problem_status {
1055: return ($show_problem_status eq 'no');
1056: }
1057:
1058: sub show_no_problem_status {
1059: return ($show_problem_status eq 'no_feedback_ever');
1060: }
1.285 albertel 1061:
1062: sub show_answer_problem_status {
1063: return ($show_problem_status eq 'answer');
1064: }
1.277 albertel 1065: }
1066:
1.64 albertel 1067: sub editxmlmode {
1.145 albertel 1068: my ($request,$file) = @_;
1069: my $result;
1070: my $problem=&Apache::lonnet::getfile($file);
1071: if ($problem eq -1) {
1.305 bisitz 1072: &Apache::lonxml::error(
1.328 bisitz 1073: '<p class="LC_error">'
1.305 bisitz 1074: .&mt('Unable to find [_1]',
1075: '<span class="LC_filename">'.$file.'</span>')
1.328 bisitz 1076: .'</p>');
1.305 bisitz 1077:
1.145 albertel 1078: $problem='';
1079: }
1.323 www 1080: if (($env{'form.problemmode'} eq 'saveeditxml') ||
1.344.2.10.4. (raeburn 1081:): ($env{'form.problemmode'} eq 'saveviewxml') ||
1.323 www 1082: ($env{'form.problemmode'} eq 'undoxml')) {
1.145 albertel 1083: my $error=&handle_save_or_undo($request,\$problem,
1.204 albertel 1084: \$env{'form.editxmltext'});
1.145 albertel 1085: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
1086: }
1.204 albertel 1087: &Apache::lonhomework::showhashsubset(\%env,'^form');
1.323 www 1088: if ($env{'form.problemmode'} eq 'saveviewxml') {
1.204 albertel 1089: &Apache::lonhomework::showhashsubset(\%env,'^form');
1.289 raeburn 1090: $env{'form.problemmode'}='view';
1.145 albertel 1091: &renderpage($request,$file);
1092: } else {
1093: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1094: if ($cols > 80) { $cols = 80; }
1095: if ($cols < 70) { $cols = 70; }
1096: if ($rows < 20) { $rows = 20; }
1.269 albertel 1097: my $js =
1098: &Apache::edit::js_change_detection().
1.289 raeburn 1099: &Apache::loncommon::resize_textarea_js().
1.344.2.10.4. (raeburn 1100:): &Apache::lonxml::setmode_javascript().
1.298 foxr 1101: &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
1.312 bisitz 1102:
1103: # Breadcrumbs
1.330 raeburn 1104: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1.338 raeburn 1105: 'text' => 'Authoring Space'},
1.312 bisitz 1106: {'href' => '',
1107: 'text' => 'Problem Editing'}];
1108:
1.238 albertel 1109: my $start_page =
1.269 albertel 1110: &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
1111: {'no_auto_mt_title' => 1,
1.318 droeschl 1112: 'only_body' => 0,
1.269 albertel 1113: 'add_entries' => {
1114: 'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
1115: 'onload' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
1.323 www 1116: },
1.312 bisitz 1117: 'bread_crumbs' => $brcrum,
1.323 www 1118: });
1.311 bisitz 1119:
1120: $result=$start_page
1121: .&Apache::loncommon::head_subbox(
1122: &Apache::loncommon::CSTR_pageheader());
1123: $result.=&renderpage($request,$file,['no_output_web'],1).
1.310 bisitz 1124: '<form '.&Apache::edit::form_change_detection().' name="lonhomework" method="post" action="'.
1.204 albertel 1125: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.179 albertel 1126: &Apache::structuretags::remember_problem_state().'
1.344.2.5 raeburn 1127: <div class="LC_edit_problem_header">
1128: <div class="LC_edit_problem_header_title">'.
1129: &mt('Problem Editing').' '.&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').
1.344.2.7 raeburn 1130: '</div><div class="LC_edit_actionbar" id="actionbar">';
1.323 www 1131:
1.344.2.5 raeburn 1132: $result.='<input type="hidden" name="problemmode" value="saveedit" />'.
1.323 www 1133: &Apache::structuretags::problem_edit_buttons('editxml');
1.344.2.5 raeburn 1134: $result.='<div>';
1135:
1136: $result .= '<ol class="LC_primary_menu" style="display:inline-block;font-size:90%;vertical-align:middle;">';
1137:
1138: unless ($env{'environment.nocodemirror'}) {
1139: # dropdown menus
1140: $result .= Apache::lonmenu::create_submenu("#", "",
1141: &mt("Problem Templates"), template_dropdown_datastructure());
1142:
1143: $result .= Apache::lonmenu::create_submenu("#", "",
1144: &mt("Response Types"), responseblock_dropdown_datastructure());
1145:
1146: $result .= Apache::lonmenu::create_submenu("#", "",
1147: &mt("Conditional Blocks"), conditional_scripting_datastructure());
1148:
1149: $result .= Apache::lonmenu::create_submenu("#", "",
1150: &mt("Miscellaneous"), misc_datastructure());
1151: }
1152:
1.344.2.7 raeburn 1153: $result .= Apache::lonmenu::create_submenu("#", "",
1.344.2.5 raeburn 1154: &mt("Help") . ' <img src="/adm/help/help.png" alt="' . &mt("Help") .
1155: '" style="vertical-align:text-bottom; height: auto; margin:0; "/>',
1156: helpmenu_datastructure(),"");
1157:
1158: $result.="</ol></div>";
1159:
1160: $result .= '</div></div>' .
1161: &Apache::lonxml::message_location() .
1162: &Apache::loncommon::xmleditor_js() .
1163: '<textarea ' . &Apache::edit::element_change_detection() .
1164: ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" ' .
1165: ' name="editxmltext" id="LC_editxmltext">' .
1166: &HTML::Entities::encode($problem,'<>&"') .
1167: '</textarea> <div id="LC_aftertextarea"> </div> </form>';
1168:
1169: my $resource = $env{'request.ambiguous'};
1170: unless($env{'environment.nocodemirror'}){
1171: $result .= '<link rel="stylesheet" href="/adm/codemirror/codemirror-combined-xml.css">
1172: <script src="/adm/codemirror/codemirror-compressed-xml.js"></script>
1173: <script>
1174: CodeMirror.defineMode("mixedmode", function(config) {
1175: return CodeMirror.multiplexingMode(
1176: CodeMirror.getMode(config, "xml"),
1177: {
1178: open: "\<script type=\"loncapa/perl\"\>", close: "\</script\>",
1179: mode: CodeMirror.getMode(config, "perl"),
1180: delimStyle: "tag",
1181: }
1182: );
1183: });
1184: var cm = CodeMirror.fromTextArea(document.getElementById("LC_editxmltext"),
1185: {
1186: mode: "mixedmode",
1187: lineWrapping: true,
1188: lineNumbers: true,
1189: tabSize: 4,
1190: indentUnit: 4,
1191:
1192: autoCloseTags: true,
1193: autoCloseBrackets: true,
1194: height: "auto",
1195: styleActiveLine: true,
1196:
1197: extraKeys: {
1198: "Tab": "indentMore",
1199: "Shift-Tab": "indentLess",
1200: }
1201: });
1202: restoreScrollPosition("'.$resource.'");
1203: </script>';
1204: }
1205:
1206: $result .= &Apache::loncommon::end_page();
1207: &Apache::lonxml::add_messages(\$result);
1208: $request->print($result);
1.145 albertel 1209: }
1210: return '';
1.47 albertel 1211: }
1.189 albertel 1212:
1.301 jms 1213: #
1214: # Render the page in whatever target desired.
1215: #
1.41 albertel 1216: sub renderpage {
1.344.2.10.4. (raeburn 1217:): my ($request,$file,$targets,$return_string,$donebuttonmsg,$viewasuser,$symb) = @_;
1.52 albertel 1218:
1.211 albertel 1219: my @targets = @{$targets || [&get_target()]};
1.204 albertel 1220: &Apache::lonhomework::showhashsubset(\%env,'form.');
1.145 albertel 1221: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1.268 albertel 1222:
1.171 albertel 1223: my $overall_result;
1.145 albertel 1224: foreach my $target (@targets) {
1.183 albertel 1225: # FIXME need to do something intelligent when a problem goes
1226: # from viewable to not viewable due to map conditions
1227: #&setuppermissions();
1228: #if ( $Apache::lonhomework::browse ne '2'
1229: # && $Apache::lonhomework::browse ne 'F' ) {
1230: # $request->print(" You most likely shouldn't see me.");
1231: #}
1.145 albertel 1232: #my $t0 = [&gettimeofday()];
1.211 albertel 1233: my $output=1;
1234: if ($target eq 'no_output_web') {
1235: $target = 'web'; $output=0;
1236: }
1.145 albertel 1237: my $problem=&Apache::lonnet::getfile($file);
1.222 albertel 1238: my $result;
1.145 albertel 1239: if ($problem eq -1) {
1.260 albertel 1240: $problem='';
1.222 albertel 1241: my $filename=(split('/',$file))[-1];
1.260 albertel 1242: my $error =
1.339 bisitz 1243: &mt('Unable to find [_1]',
1244: '<span class="LC_filename">'.$filename.'</span>');
1.260 albertel 1245: $result.=
1246: &Apache::loncommon::simple_error_page($request,'Not available',
1.340 bisitz 1247: $error,{'no_auto_mt_msg' => 1});
1.260 albertel 1248: return;
1.145 albertel 1249: }
1.52 albertel 1250:
1.145 albertel 1251: my %mystyle;
1252: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
1253: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
1.204 albertel 1254: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
1.145 albertel 1255:
1.344.2.10.4. (raeburn 1256:): if (($target eq 'web') && ($viewasuser ne '') && ($symb ne '')) {
1257:): $env{'request.user_in_effect'} = $viewasuser;
1258:): }
1259:):
1.145 albertel 1260: &Apache::lonxml::debug("Should be parsing now");
1.222 albertel 1261: $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
1262: &setup_vars($target),%mystyle);
1.273 albertel 1263: &finished_parsing();
1.214 albertel 1264: if (!$output) { $result = ''; }
1.145 albertel 1265: #$request->print("Result follows:");
1266: if ($target eq 'modified') {
1267: &handle_save_or_undo($request,\$problem,\$result);
1268: } else {
1269: if ($target eq 'analyze') {
1270: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
1271: undef(%Apache::lonhomework::analyze);
1.344.2.10.4. (raeburn 1272:): } elsif ($target eq 'web') {
1273:): if ($donebuttonmsg) {
1274:): $result =~ s{</body>}{};
1275:): $result.= &Apache::loncommon::confirmwrapper(&Apache::lonhtmlcommon::confirm_success($donebuttonmsg,1))."\n</body>";
1276:): }
1.145 albertel 1277: }
1278: #my $td=&tv_interval($t0);
1279: #if ( $Apache::lonxml::debug) {
1280: #$result =~ s:</body>::;
1281: #$result.="<br />Spent $td seconds processing target $target\n</body>";
1282: #}
1.171 albertel 1283: # $request->print($result);
1284: $overall_result.=$result;
1.344.2.10.4. (raeburn 1285:): if (($target eq 'web') && ($viewasuser ne '') && ($symb ne '')) {
1286:): my ($vuname,$vudom) = split(/:/,$viewasuser);
1287:): $overall_result .= &Apache::grades::view_as_user($symb,$vuname,$vudom).
1288:): '</body></html>';
1289:): }
1.171 albertel 1290: # $request->rflush();
1.145 albertel 1291: }
1.344.2.10.4. (raeburn 1292:): if (($target eq 'web') && ($viewasuser ne '') && ($symb ne '')) {
1293:): undef($env{'request.user_in_effect'});
1294:): }
1.145 albertel 1295: #$request->print(":Result ends");
1296: #my $td=&tv_interval($t0);
1.52 albertel 1297: }
1.213 albertel 1298: if (!$return_string) {
1299: &Apache::lonxml::add_messages(\$overall_result);
1.344.2.10.4. (raeburn 1300:): $request->print($overall_result);
1301:): $request->rflush();
1.213 albertel 1302: } else {
1303: return $overall_result;
1304: }
1.41 albertel 1305: }
1306:
1.273 albertel 1307: sub finished_parsing {
1308: undef($Apache::lonhomework::parsing_a_problem);
1309: undef($Apache::lonhomework::parsing_a_task);
1310: }
1311:
1.344.2.5 raeburn 1312: # function extracted from get_template_html
1313: # returns "key" -> list
1314: # key: path of template
1315: # value 1: title
1316: # value 2: category
1317: # value 3: name of help topic ???
1.42 albertel 1318: sub get_template_list {
1.282 albertel 1319: my ($extension) = @_;
1.344.2.5 raeburn 1320:
1321: my @files = glob($Apache::lonnet::perlvar{'lonIncludes'}.
1322: '/templates/*.'.$extension);
1323: @files = map {[$_,&mt(&Apache::lonnet::metadata($_, 'title')),
1324: (&Apache::lonnet::metadata($_, 'category')?&mt(&Apache::lonnet::metadata($_, 'category')):&mt('Miscellaneous')),
1325: &mt(&Apache::lonnet::metadata($_, 'help'))]} (@files);
1326: @files = sort {$a->[2].$a->[1] cmp $b->[2].$b->[1]} (@files);
1327: return @files;
1328: }
1329:
1330: sub get_template_html {
1331: my ($extension) = @_;
1.145 albertel 1332: my $result;
1333: my @allnames;
1334: &Apache::lonxml::debug("Looking for :$extension:");
1.282 albertel 1335: my $glob_extension = $extension;
1336: if ($extension eq 'survey' || $extension eq 'exam') {
1.344.2.5 raeburn 1337: $glob_extension = 'problem';
1.282 albertel 1338: }
1.344.2.5 raeburn 1339: my @files = &get_template_list($extension);
1.287 raeburn 1340: my ($midpoint,$seconddiv,$numfiles);
1.341 bisitz 1341: my @noexamplelink = ('blank.problem','blank.library','script.library');
1.287 raeburn 1342: $numfiles = 0;
1343: foreach my $file (@files) {
1344: next if ($file->[1] !~ /\S/);
1345: $numfiles ++;
1346: }
1347: if ($numfiles > 0) {
1348: $result = '<div class="LC_left_float">';
1349: $midpoint = int($numfiles/2);
1350: if ($numfiles%2) {
1351: $midpoint ++;
1352: }
1353: }
1354: my $count = 0;
1.292 www 1355: my $currentcategory='';
1.314 bisitz 1356: my $first = 1;
1.329 raeburn 1357: my $londocroot = $Apache::lonnet::perlvar{'lonDocRoot'};
1.282 albertel 1358: foreach my $file (@files) {
1359: next if ($file->[1] !~ /\S/);
1.292 www 1360: if ($file->[2] ne $currentcategory) {
1361: $currentcategory=$file->[2];
1362: if ((!$seconddiv) && ($count >= $midpoint)) {
1.314 bisitz 1363: $result .= '</div></div>'."\n".'<div class="LC_left_float">'."\n";
1.292 www 1364: $seconddiv = 1;
1.314 bisitz 1365: } elsif (!$first) {
1366: $result.='</div>'."\n";
1367: } else {
1368: $first = 0;
1.292 www 1369: }
1.314 bisitz 1370: $result.= '<div class="LC_Box">'."\n"
1371: .'<h3 class="LC_hcell">'.$currentcategory.'</h3>'."\n";
1.293 www 1372: $count++;
1.292 www 1373: }
1.282 albertel 1374: $result .=
1375: '<label><input type="radio" name="template" value="'.$file->[0].'" />'.
1.292 www 1376: $file->[1].'</label>';
1377: if ($file->[3]) {
1378: $result.=&Apache::loncommon::help_open_topic($file->[3]);
1379: }
1.341 bisitz 1380: # Provide example link
1.292 www 1381: my $filename=$file->[0];
1.329 raeburn 1382: $filename=~s{^\Q$londocroot\E}{};
1.344 raeburn 1383: if (!(grep($filename =~ /\Q$_\E$/,@noexamplelink))) {
1384: $result .= ' <span class="LC_fontsize_small">'
1385: .&Apache::loncommon::modal_link(
1386: $filename.'?inhibitmenu=yes',&mt('Example'),600,420,'sample')
1387: .'</span>';
1388: }
1.341 bisitz 1389: $result .= '<br />'."\n";
1.287 raeburn 1390: $count ++;
1391: }
1392: if ($numfiles > 0) {
1.314 bisitz 1393: $result .= '</div></div>'."\n".'<div class="LC_clear_float_footer"></div>'."\n";
1.42 albertel 1394: }
1.145 albertel 1395: return $result;
1.42 albertel 1396: }
1397:
1398: sub newproblem {
1.65 matthew 1399: my ($request) = @_;
1.282 albertel 1400:
1.344.2.5 raeburn 1401: if ($env{'form.mode'} eq 'blank'){
1402: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1403: my $templatefilename =
1404: $request->dir_config('lonIncludes').'/templates/blank.problem';
1405: &File::Copy::copy($templatefilename,$dest);
1406: &renderpage($request,$dest);
1407: return;
1.344.2.7 raeburn 1408: }
1.344.2.8 raeburn 1409: my $errormsg;
1.282 albertel 1410: if ($env{'form.template'}) {
1.344.2.8 raeburn 1411: my $file;
1412: my ($extension) = ($env{'form.template'} =~ /\.(\w+)$/);
1413: if ($extension) {
1414: my @files = &get_template_list($extension);
1415: foreach my $poss (@files) {
1416: if (ref($poss) eq 'ARRAY') {
1417: if ($env{'form.template'} eq $poss->[0]) {
1418: $file = $env{'form.template'};
1419: last;
1420: }
1421: }
1422: }
1423: if ($file) {
1424: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1425: &File::Copy::copy($file,$dest);
1426: &renderpage($request,$dest);
1427: return;
1428: } else {
1429: $errormsg = '<p class="LC_error">'.&mt('Invalid template file.').'</p>';
1430: }
1431: } else {
1432: $errormsg = '<p class="LC_error">'.&mt('Invalid template file; template needs to be a .problem, .library, or .task file.').'</p>';
1433: }
1.282 albertel 1434: }
1435:
1436: my ($extension) = ($request->uri =~ m/\.(\w+)$/);
1437: &Apache::lonxml::debug("Looking for :$extension:");
1.344.2.5 raeburn 1438: my $templatelist=&get_template_html($extension);
1.282 albertel 1439: if ($env{'form.newfile'} && !$templatelist) {
1440: # no templates found
1.131 albertel 1441: my $templatefilename =
1.258 albertel 1442: $request->dir_config('lonIncludes').'/templates/blank.'.$extension;
1.131 albertel 1443: &Apache::lonxml::debug("$templatefilename");
1444: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.282 albertel 1445: &File::Copy::copy($templatefilename,$dest);
1.131 albertel 1446: &renderpage($request,$dest);
1.85 albertel 1447: } else {
1.176 albertel 1448: my $url=&HTML::Entities::encode($request->uri,'<>&"');
1.65 matthew 1449: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.85 albertel 1450: my $instructions;
1.330 raeburn 1451: my $brcrum = [{'href' => &Apache::loncommon::authorspace($request->uri),
1.338 raeburn 1452: 'text' => 'Authoring Space'},
1.312 bisitz 1453: {'href' => '',
1454: 'text' => "Create New $extension"}];
1.240 albertel 1455: my $start_page =
1.312 bisitz 1456: &Apache::loncommon::start_page("Create New $extension",
1457: undef,
1458: {'bread_crumbs' => $brcrum,});
1.311 bisitz 1459: $request->print(
1460: $start_page
1461: .&Apache::loncommon::head_subbox(
1462: &Apache::loncommon::CSTR_pageheader())
1463: .'<h1>'.&mt("Creating a new $extension resource.")."</h1>
1.128 albertel 1464: $errormsg
1.258 albertel 1465: ".&mt("The requested file [_1] currently does not exist.",
1.329 raeburn 1466: '<span class="LC_filename">'.$url.'</span>').'
1.314 bisitz 1467: <p class="LC_info">
1468: '.&mt("To create a new $extension, select a template from the".
1469: " list below. Then click on the \"Create $extension\" button.").'
1470: </p><div><form action="'.$url.'" method="post">');
1.258 albertel 1471:
1.85 albertel 1472: if (defined($templatelist)) {
1.282 albertel 1473: $request->print($templatelist);
1.85 albertel 1474: }
1.282 albertel 1475: $request->print('<br /><input type="submit" name="newfile" value="'.
1476: &mt("Create $extension").'" />');
1.314 bisitz 1477: $request->print('</form></div>'.&Apache::loncommon::end_page());
1.65 matthew 1478: }
1.282 albertel 1479: return;
1.42 albertel 1480: }
1481:
1.268 albertel 1482: sub update_construct_style {
1483: if ($env{'request.state'} eq "construct"
1.289 raeburn 1484: && $env{'form.problemmode'} eq 'view'
1.268 albertel 1485: && defined($env{'form.submitted'})
1486: && !defined($env{'form.resetdata'})
1487: && !defined($env{'form.newrandomization'})) {
1488: if ((!$env{'form.style_file'} && $env{'construct.style'})
1489: ||$env{'form.clear_style_file'}) {
1.303 raeburn 1490: &Apache::lonnet::delenv('construct.style');
1.268 albertel 1491: } elsif ($env{'form.style_file'}
1492: && $env{'construct.style'} ne $env{'form.style_file'}) {
1.291 raeburn 1493: &Apache::lonnet::appenv({'construct.style' =>
1494: $env{'form.style_file'}});
1.268 albertel 1495: }
1496: }
1497: }
1498:
1.344.2.10.4. (raeburn 1499:): #
1500:): # Sets interval for current user so time left will be zero, either for the entire folder
1501:): # containing the current resource, or just the resource, depending on value of first item
1502:): # in interval array retrieved from EXT("resource.0.interval");
1503:): #
1504:): sub zero_timer {
1505:): my ($symb) = @_;
1506:): my ($hastimeleft,$first_access,$now);
1507:): my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb);
1508:): if (@interval > 1) {
1509:): if ($interval[1] eq 'course') {
1510:): return ('fail',&mt('Ending of timed events not supported for intervals set course-wide'));
1511:): } else {
1512:): my $now = time;
1513:): my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
1514:): if ($first_access > 0) {
1515:): my ($timelimit,$donesuffix) = split(/_/,$interval[0],2);
1516:): if ($donesuffix =~ /^done(?:|\:[^\:]+\:)(.*)$/) {
1517:): my ($dummy,$proctor,$secret) = split(/_/,$1);
1518:): if (($proctor) && ($secret ne '')) {
1519:): my $key = $env{'form.LC_interval_done_proctorpass'};
1520:): $key =~ s/^\s+//;
1521:): $key =~ s/\s+$//;
1522:): if ($env{'form.LC_interval_done_proctorpass'} ne $secret) {
1523:): return ('fail',
1524:): &mt('Incorrect key entered by proctor'));
1525:): }
1526:): }
1527:): if ($first_access+$timelimit > $now) {
1528:): my $done_time = $now - $first_access;
1529:): my $snum = 1;
1530:): if ($interval[1] eq 'map') {
1531:): $snum = 2;
1532:): }
1533:): my $result =
1534:): &Apache::lonparmset::storeparm_by_symb_inner($symb,'0_interval',
1535:): $snum,$done_time,
1536:): 'date_interval',
1537:): $env{'user.name'},
1538:): $env{'user.domain'});
1539:): if ($result eq '') {
1540:): # Record action in "User Notes"
1541:): &Apache::lonmsg::store_instructor_comment(
1542:): 'Pressed Done button for symb:<br />'.$symb,
1543:): $env{'user.name'}, $env{'user.domain'});
1544:): return ('ok');
1545:): } else {
1546:): return ('fail',&mt('Error ending timed event: [_1]',$result));
1547:): }
1548:): } else {
1549:): return ('fail',&mt('Timed event already ended'));
1550:): }
1551:): } else {
1552:): return ('fail',&mt('Timed event can not be ended before the time limit'));
1553:): }
1554:): } else {
1555:): return ('fail',&mt('Timer not yet started for this timed event'));
1556:): }
1557:): }
1558:): } else {
1559:): return ('fail',&mt('No timer in use'));
1560:): }
1561:): return();
1562:): }
1.268 albertel 1563:
1.41 albertel 1564: sub handler {
1.145 albertel 1565: #my $t0 = [&gettimeofday()];
1566: my $request=$_[0];
1.223 albertel 1567: $Apache::lonxml::request=$request;
1.204 albertel 1568: $Apache::lonxml::debug=$env{'user.debug'};
1569: $env{'request.uri'}=$request->uri;
1.180 albertel 1570: &setuppermissions();
1.193 albertel 1571:
1.145 albertel 1572: my $file=&Apache::lonnet::filelocation("",$request->uri);
1573:
1574: #check if we know where we are
1.344.2.10.4. (raeburn 1575:): if ($env{'request.course.fn'} && !&Apache::lonnet::symbread('','',1,1)) {
1.145 albertel 1576: # if we are browsing we might not be able to know where we are
1.344.2.10.4. (raeburn 1577:): if ($Apache::lonhomework::browse ne 'F' &&
1.204 albertel 1578: $env{'request.state'} ne "construct") {
1.145 albertel 1579: #should know where we are, so ask
1.253 albertel 1580: &unset_permissions();
1581: $request->internal_redirect('/adm/ambiguous');
1582: return OK;
1.145 albertel 1583: }
1584: }
1.253 albertel 1585: if (&setupheader($request)) {
1586: &unset_permissions();
1587: return OK;
1588: }
1.344.2.10.4. (raeburn 1589:):
1.244 albertel 1590: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
1.204 albertel 1591: &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
1.261 albertel 1592: my ($symb) = &Apache::lonnet::whichuser();
1.145 albertel 1593: &Apache::lonxml::debug('symb is '.$symb);
1.204 albertel 1594: if ($env{'request.state'} eq "construct") {
1.145 albertel 1595: if ( -e $file ) {
1596: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1597: ['problemmode']);
1.204 albertel 1598: if (!(defined $env{'form.problemmode'})) {
1.145 albertel 1599: #first visit to problem in construction space
1.289 raeburn 1600: $env{'form.problemmode'}= 'view';
1.145 albertel 1601: &renderpage($request,$file);
1.323 www 1602: } elsif (($env{'form.problemmode'} eq 'editxml') ||
1603: ($env{'form.problemmode'} eq 'saveeditxml') ||
1604: ($env{'form.problemmode'} eq 'saveviewxml') ||
1605: ($env{'form.problemmode'} eq 'undoxml')) {
1.145 albertel 1606: &editxmlmode($request,$file);
1.289 raeburn 1607: } elsif ($env{'form.problemmode'} eq 'calcanswers') {
1.145 albertel 1608: &analyze($request,$file);
1609: } else {
1.268 albertel 1610: &update_construct_style();
1.145 albertel 1611: &renderpage($request,$file);
1612: }
1613: } else {
1.344.2.5 raeburn 1614: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1615: ['mode']);
1.145 albertel 1616: # requested file doesn't exist in contruction space
1617: &newproblem($request);
1618: }
1619: } else {
1.344.2.10.4. (raeburn 1620:): # Set the event timer to zero if the "done button" was clicked. The button is
1621:): # part of the doneButton form created in lonmenu.pm
1622:): my ($donebuttonresult,$donemsg,$viewasuser);
1623:): if ($symb && $env{'form.LC_interval_done'} eq 'true') {
1624:): ($donebuttonresult,$donemsg) = &zero_timer($symb);
1625:): undef($env{'form.LC_interval_done'});
1626:): undef($env{'form.LC_interval_done_proctorpass'});
1627:): }
1628:): if (($env{'form.LC_viewas'} ne '') && $symb && $env{'request.course.id'} &&
1629:): ($Apache::lonhomework::viewgrades || $Apache::lonhomework::modifygrades)) {
1630:): if ($env{'form.LC_viewas'} =~ /^($match_username):($match_domain)$/) {
1631:): my ($possuname,$possudom) = ($1,$2);
1632:): my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1633:): my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1634:): my ($canview,$posssec);
1635:): if ($env{'request.course.sec'} ne '') {
1636:): if ($Apache::lonhomework::modifygradessec eq $env{'request.course.sec'}) {
1637:): $canview = 'section';
1638:): $posssec = $env{'request.course.sec'};
1639:): } elsif ($Apache::lonhomework::viewgradessec eq $env{'request.course.sec'}) {
1640:): $canview = 'section';
1641:): $posssec = $env{'request.course.sec'};
1642:): }
1643:): }
1644:): my $crstype = &Apache::loncommon::course_type();
1645:): if (&Apache::loncourseuser::is_course_user($possudom,$possuname,$cdom,$cnum,
1646:): $canview,$crstype,$posssec)) {
1647:): $viewasuser = $possuname.':'.$possudom;
1648:): }
1649:): }
1650:): undef($env{'form.LC_viewas'});
1651:): }
1.145 albertel 1652: # just render the page normally outside of construction space
1653: &Apache::lonxml::debug("not construct");
1.344.2.10.4. (raeburn 1654:): undef(@Apache::lonhomework::ltipassback);
1655:): &renderpage($request,$file,undef,undef,$donemsg,$viewasuser,$symb);
1656:): if (@Apache::lonhomework::ltipassback) {
1657:): unless ($registered_cleanup) {
1658:): my $handlers = $request->get_handlers('PerlCleanupHandler');
1659:): $request->set_handlers('PerlCleanupHandler' =>
1660:): [\&do_ltipassback,@{$handlers}]);
1661:): }
1662:): }
1.41 albertel 1663: }
1.145 albertel 1664: #my $td=&tv_interval($t0);
1665: #&Apache::lonxml::debug("Spent $td seconds processing");
1666: # always turn off debug messages
1667: $Apache::lonxml::debug=0;
1.253 albertel 1668: &unset_permissions();
1.145 albertel 1669: return OK;
1.52 albertel 1670:
1.1 albertel 1671: }
1672:
1.344.2.5 raeburn 1673: sub template_dropdown_datastructure {
1674: # gathering the all templates and their path, title, category and help topic
1675: my @templates = get_template_list('problem');
1676: # template category => title
1677: my %tmplthash = ();
1678: # template title => path
1679: my %tmpltcontent = ();
1680:
1681: foreach my $template (@templates){
1682: # put in hash if the template is not empty
1683: unless ($template->[1] eq ''){
1684: push(@{$tmplthash{$template->[2]}}, $template->[1]);
1685: push(@{$tmpltcontent{$template->[1]}},$template->[0]);
1686: }
1687: }
1688:
1689: my $catList = [];
1690: foreach my $cat (sort keys %tmplthash) {
1691: my $catItems = [];
1692: foreach my $title (sort @{$tmplthash{$cat}}) {
1693: my $path = $tmpltcontent{$title}->[0];
1694: my $code;
1695: open(FH, "<$path");
1696: while(<FH>){
1697: $code.= $_ unless $_ =~ /(<problem>)|(<\/problem>)/;
1698: }
1699: close(FH);
1700:
1701: if ($code ne '') {
1702: my $href = 'javascript:insertText(\'' . &convert_for_js(&HTML::Entities::encode($code,'<>&"')) . '\')';
1703: my $currItem = [$href, $title, undef];
1704: push @{$catItems}, $currItem;
1705: }
1706: }
1707: push @{$catList}, [$catItems, $cat, undef];
1708: }
1709:
1710: return $catList;
1711: }
1712:
1713: sub responseblock_dropdown_datastructure {
1714:
1.344.2.6 raeburn 1715: my $mathCat = [
1716: [
1.344.2.5 raeburn 1717: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_formularesponse())) . "\')", &mt("Formula Response"), undef],
1718: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_functionplotresponse())) . "\')", &mt("Function Plot Response"), undef],
1719: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_mathresponse())) . "\')", &mt("Math Response"), undef],
1720: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_numericalresponse())) . "\')", &mt("Numerical Response"), undef]
1.344.2.6 raeburn 1721: ],
1722: &mt("Math"),
1723: undef
1.344.2.5 raeburn 1724: ];
1725:
1.344.2.6 raeburn 1726: my $miscCat = [
1727: [
1.344.2.5 raeburn 1728: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_imageresponse())) . "\')", &mt("Click on Image"), undef],
1729: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_customresponse())) . "\')", &mt("Custom Response"), undef],
1730: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_externalresponse())) . "\')", &mt("External Response"), undef],
1731: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_matchresponse())) . "\')", &mt("Match Two Lists"), undef],
1732: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_radiobuttonresponse())) . "\')", &mt("One out of N statements"), undef],
1733: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_optionresponse())) . "\')", &mt("Select from Options"), undef],
1734: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_rankresponse())) . "\')", &mt("Rank Values"), undef]
1735: ],
1736: &mt("Miscellaneous"),
1737: undef
1738: ];
1739:
1.344.2.6 raeburn 1740: my $chemCat = [
1741: [
1.344.2.5 raeburn 1742: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_reactionresponse())) . "\')", &mt("Chemical Reaction"), undef],
1743: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicresponse())) . "\')", &mt("Organic Chemical Structure"), undef]
1.344.2.6 raeburn 1744: ],
1745: &mt("Chemistry"),
1746: undef
1747: ];
1748:
1749: my $textCat = [
1750: [
1751: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_stringresponse())) . "\')", &mt("String Response"), undef],
1752: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_essayresponse())) . "\')", &mt("Essay"), undef]
1753: ],
1754: &mt("Text"),
1755: undef
1756: ];
1.344.2.5 raeburn 1757:
1758: return [$mathCat, $miscCat, $chemCat, $textCat];
1759: }
1760:
1761:
1762: sub conditional_scripting_datastructure {
1763: # TODO: corresponding routines should be used for the javascript:insertText parts
1764: # instead of the placeholder routine default_xml_tag with the tags
1765: # e.g. &default_xml_tag("postanswerdate") should be replaced with a routine which
1766: # returns the corresponding content for this case
1767:
1768: #TODO translated is currently temporarily here, another solution should be found where the
1769: # needed string can be retrieved
1770:
1.344.2.6 raeburn 1771: my $translatedTag = '
1.344.2.5 raeburn 1772: <translated>
1773: <lang which="en"></lang>
1774: <lang which="default"></lang>
1775: </translated>';
1776: return [
1.344.2.6 raeburn 1777: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode($translatedTag)) . "\')", &mt("Translated Block"), undef],
1778: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("block"))) . "\')", &mt("Conditional Block"), undef],
1779: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("postanswerdate"))) . "\')", &mt("After Answer Date Block"), undef],
1780: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("preduedate"))) . "\')", &mt("Before Due Date Block"), undef],
1781: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("solved"))) . "\')", &mt("Block For After Solved"), undef],
1782: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("notsolved"))) . "\')", &mt("Block For When Not Solved"), undef]
1.344.2.5 raeburn 1783: ];
1784: }
1785:
1786: sub misc_datastructure {
1787: return [
1788: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_img())) . "\')", &mt("Image"), undef],
1789: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::lonplot::insert_gnuplot())) . "\')", &mt("GNU Plot"), undef],
1790: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_organicstructure())) . "\')", &mt("Organic Structure"), undef],
1791: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::edit::insert_script())) . "\')", &mt("Script Block"), undef],
1792: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("allow"))) . "\')", &mt("File Dependencies"), undef],
1793: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("import"))) . "\')", &mt("Import a File"), undef],
1794: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&Apache::londefdef::insert_meta())) . "\')", &mt("Custom Metadata"), undef],
1795: ["javascript:insertText(\'" . &convert_for_js(&HTML::Entities::encode(&default_xml_tag("part"))) . "\')", &mt("Problem Part"), undef]
1796: ];
1797: }
1798:
1799: # helper routine for the datastructure building subroutines
1800: sub default_xml_tag {
1.344.2.6 raeburn 1801: my ($tag) = @_;
1802: return "\n<$tag></$tag>";
1.344.2.5 raeburn 1803: }
1804:
1805: sub helpmenu_datastructure {
1806:
1.344.2.8 raeburn 1807: # filename, title, width, height
1.344.2.6 raeburn 1808: my $helpers = [
1.344.2.9 raeburn 1809: ['Problem_LON-CAPA_Functions.hlp', &mt('Script Functions'), 800, 600],
1.344.2.8 raeburn 1810: ['Greek_Symbols.hlp', &mt('Greek Symbols'), 500, 600],
1811: ['Other_Symbols.hlp', &mt('Other Symbols'), 500, 600],
1812: ['Authoring_Output_Tags.hlp', &mt('Output Tags'), 800, 600],
1813: ['Authoring_Multilingual_Problems.hlp', &mt('Languages'), 800, 600],
1.344.2.6 raeburn 1814: ];
1815:
1816: my $help_structure = [];
1817:
1818: foreach my $count (0..(scalar(@{$helpers})-1)) {
1819: my $filename = $helpers->[$count]->[0];
1820: my $title = $helpers->[$count]->[1];
1.344.2.8 raeburn 1821: my $width = $helpers->[$count]->[2];
1822: my $height = $helpers->[$count]->[3];
1823: if ($width eq '') {
1824: $width = 500;
1825: }
1826: if ($height eq '') {
1827: $height = 600;
1828: }
1829: my $href = &HTML::Entities::encode("javascript:openMyModal('/adm/help/$filename',$width,$height,'yes');");
1.344.2.6 raeburn 1830: push @{$help_structure}, [$href, $title, undef];
1831: }
1.344.2.5 raeburn 1832:
1.344.2.6 raeburn 1833: return $help_structure;
1.344.2.5 raeburn 1834: }
1835:
1836: # we need substitution to not break javascript code
1837: sub convert_for_js {
1838: my $return = shift;
1.344.2.6 raeburn 1839: $return =~ s|script|ESCAPEDSCRIPT|g;
1840: $return =~ s|\\|\\\\|g;
1841: $return =~ s|\n|\\r\\n|g;
1842: $return =~ s|'|\\'|g;
1843: $return =~ s|'|\\'|g;
1.344.2.5 raeburn 1844: return $return;
1845: }
1846:
1.344.2.10.4. (raeburn 1847:): sub do_ltipassback {
1848:): if (@Apache::lonhomework::ltipassback) {
1849:): foreach my $item (@Apache::lonhomework::ltipassback) {
1850:): if (ref($item) eq 'HASH') {
1851:): if ((ref($item->{'lti'}) eq 'HASH') && ($item->{'cid'} =~ /^($match_domain)_($match_courseid)$/)) {
1852:): my ($cdom,$cnum) = ($1,$2);
1853:): my $msgformat = $item->{'lti'}->{'passbackformat'};
1854:): my $sigmethod = 'HMAC-SHA1';
1855:): my $ltinum = $item->{'ltinum'};
1856:): my $id = $item->{'pbid'};
1857:): my $url = $item->{'pburl'};
1858:): my $type = $item->{'pbtype'};
1859:): my $scope = $item->{'scope'};
1860:): my $map = $item->{'ltimap'};
1861:): my $symb = $item->{'ltisymb'};
1862:): my $uname = $item->{'uname'};
1863:): my $udom = $item->{'udom'};
1864:): my $keynum = $item->{'lti'}->{'cipher'};
1865:): my $crsdef = $item->{'crsdef'};
1866:): my $scoretype = $item->{'format'};
1867:): my ($total,$possible);
1868:): if ($scope eq 'resource') {
1869:): $total = $item->{'total'};
1870:): $possible = $item->{'possible'};
1871:): } elsif ($scope eq 'map') {
1872:): ($total,$possible) = &get_lti_score($uname,$udom,$map);
1873:): } elsif ($scope eq 'course') {
1874:): ($total,$possible) = &get_lti_score($uname,$udom);
1875:): }
1876:): if (($id ne '') && ($url ne '') && ($possible)) {
1877:): &LONCAPA::ltiutils::send_grade($cdom,$cnum,$crsdef,$type,$ltinum,$keynum,$id,$url,$scoretype,$sigmethod,$msgformat,$total,$possible);
1878:): }
1879:): }
1880:): }
1881:): }
1882:): undef(@Apache::lonhomework::ltipassback);
1883:): }
1884:): }
1885:):
1886:): sub get_lti_score {
1887:): my ($uname,$udom,$mapurl) = @_;
1888:): my $navmap = Apache::lonnavmaps::navmap->new($uname,$udom);
1889:): if (ref($navmap)) {
1890:): my $iterator;
1891:): if ($mapurl ne '') {
1892:): my $map = $navmap->getResourceByUrl($mapurl);
1893:): my $firstres = $map->map_start();
1894:): my $finishres = $map->map_finish();
1895:): $iterator = $navmap->getIterator($firstres,$finishres,undef,1);
1896:): } else {
1897:): $iterator = $navmap->getIterator(undef,undef,undef,1);
1898:): }
1899:): if (ref($iterator)) {
1900:): my $depth = 1;
1901:): my $total = 0;
1902:): my $possible = 0;
1903:): $iterator->next(); # ignore first BEGIN_MAP
1904:): my $curRes = $iterator->next();
1905:): while ( $depth > 0 ) {
1906:): if ($curRes == $iterator->BEGIN_MAP()) {$depth++;}
1907:): if ($curRes == $iterator->END_MAP()) { $depth--; }
1908:): if (ref($curRes) && $curRes->is_gradable() && !$curRes->randomout) {
1909:): my $parts = $curRes->parts();
1910:): foreach my $part (@{$parts}) {
1911:): next if ($curRes->solved($part) eq 'excused');
1912:): $total += $curRes->weight($part) * $curRes->awarded($part);
1913:): $possible += $curRes->weight($part);
1914:): }
1915:): }
1916:): $curRes = $iterator->next();
1917:): }
1918:): if ($total > $possible) {
1919:): $total = $possible;
1920:): }
1921:): return ($total,$possible);
1922:): }
1923:): }
1924:): return;
1925:): }
1926:):
1.1 albertel 1927: 1;
1928: __END__
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