Annotation of loncom/homework/lonhomework.pm, revision 1.300
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.300 ! jms 4: # $Id: lonhomework.pm,v 1.299 2008/11/19 18:34:56 jms 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:
1.300 ! jms 28: =pod
! 29:
! 30: =head1 NAME
! 31:
! 32: Apache::lonhomework.pm
! 33:
! 34: =head1 SYNOPSIS
! 35:
! 36: handles requests for output, evaluation, and
! 37: alteration of a homework resource
! 38:
! 39: This is part of the LearningOnline Network with CAPA project
! 40: described at http://www.lon-capa.org.
! 41:
! 42:
! 43: =head1 NOTABLE SUBROUTINES
! 44:
! 45: =cut
! 46:
1.1 albertel 47:
48: package Apache::lonhomework;
49: use strict;
1.73 albertel 50: use Apache::style();
51: use Apache::lonxml();
1.204 albertel 52: use Apache::lonnet;
1.73 albertel 53: use Apache::lonplot();
54: use Apache::inputtags();
55: use Apache::structuretags();
56: use Apache::randomlabel();
57: use Apache::response();
58: use Apache::hint();
59: use Apache::outputtags();
1.83 albertel 60: use Apache::caparesponse();
61: use Apache::radiobuttonresponse();
62: use Apache::optionresponse();
63: use Apache::imageresponse();
64: use Apache::essayresponse();
65: use Apache::externalresponse();
1.106 albertel 66: use Apache::rankresponse();
1.107 albertel 67: use Apache::matchresponse();
1.137 albertel 68: use Apache::chemresponse();
1.169 albertel 69: use Apache::drawimage();
1.26 www 70: use Apache::Constants qw(:common);
1.83 albertel 71: use Apache::loncommon();
1.146 albertel 72: use Apache::lonlocal;
1.179 albertel 73: use Time::HiRes qw( gettimeofday tv_interval );
1.282 albertel 74: use HTML::Entities();
75: use File::Copy();
1.188 foxr 76:
1.189 albertel 77: # FIXME - improve commenting
1.188 foxr 78:
1.43 albertel 79:
1.69 harris41 80: BEGIN {
1.145 albertel 81: &Apache::lonxml::register_insert();
1.43 albertel 82: }
83:
1.188 foxr 84:
1.276 foxr 85: =pod
86:
87: =item set_bubble_lines()
88:
89: Called at analysis time to set the bubble lines
90: hash for the problem.. This should be called in the
91: end_problemtype tag in analysis mode.
92:
93: We fetch the hash of part id counters from lonxml
94: and push them into analyze:{part_id.bubble_lines}.
95:
96: =cut
97:
98: sub set_bubble_lines {
99: my %bubble_counters = &Apache::lonxml::get_bubble_line_hash();
100:
101: foreach my $key (keys(%bubble_counters)) {
102: $Apache::lonhomework::analyze{"$key.bubble_lines"} =
103: $bubble_counters{"$key"};
104: }
105: }
106:
1.299 jms 107: =pod
108:
109: =item get_target()
110:
111: Decides what targets to render for.
112: Implicit inputs:
113: Various session environment variables:
114: request.state - published - is a /res/ resource
115: uploaded - is a /uploaded/ resource
116: contruct - is a /priv/ resource
117: form.grade_target - a form parameter requesting a specific target
118:
119: =cut
120:
1.5 albertel 121: sub get_target {
1.204 albertel 122: &Apache::lonxml::debug("request.state = $env{'request.state'}");
123: if( defined($env{'form.grade_target'})) {
124: &Apache::lonxml::debug("form.grade_target= $env{'form.grade_target'}");
1.188 foxr 125: } else {
1.189 albertel 126: &Apache::lonxml::debug("form.grade_target <undefined>");
1.188 foxr 127: }
1.204 albertel 128: if (($env{'request.state'} eq "published") ||
129: ($env{'request.state'} eq "uploaded")) {
130: if ( defined($env{'form.grade_target'} )
131: && ($env{'form.grade_target'} eq 'tex')) {
132: return ($env{'form.grade_target'});
133: } elsif ( defined($env{'form.grade_target'} )
1.145 albertel 134: && ($Apache::lonhomework::viewgrades eq 'F' )) {
1.207 albertel 135: return ($env{'form.grade_target'});
1.244 albertel 136: } elsif ( $env{'form.grade_target'} eq 'webgrade'
137: && ($Apache::lonhomework::queuegrade eq 'F' )) {
138: return ($env{'form.grade_target'});
1.207 albertel 139: }
140: if ($env{'form.webgrade'} &&
1.244 albertel 141: ($Apache::lonhomework::modifygrades eq 'F'
142: || $Apache::lonhomework::queuegrade eq 'F' )) {
1.207 albertel 143: return ('grade','webgrade');
1.145 albertel 144: }
1.204 albertel 145: if ( defined($env{'form.submitted'}) &&
146: ( !defined($env{'form.newrandomization'}))) {
1.217 albertel 147: return ('grade', 'web');
1.145 albertel 148: } else {
1.217 albertel 149: return ('web');
1.145 albertel 150: }
1.204 albertel 151: } elsif ($env{'request.state'} eq "construct") {
152: if ( defined($env{'form.grade_target'}) ) {
153: return ($env{'form.grade_target'});
1.145 albertel 154: }
1.204 albertel 155: if ( defined($env{'form.preview'})) {
156: if ( defined($env{'form.submitted'})) {
1.145 albertel 157: return ('grade', 'web');
158: } else {
159: return ('web');
160: }
161: } else {
1.267 albertel 162: if ($env{'form.problemstate'} eq 'WEB_GRADE') {
163: #$env{'form.webgrade'} = 'yes';
164: return ('grade','webgrade','answer');
1.289 raeburn 165: } elsif (($env{'form.problemmode'} eq 'view') ||
166: ($env{'form.problemmode'} eq 'discard')) {
1.204 albertel 167: if ( defined($env{'form.submitted'}) &&
168: (!defined($env{'form.resetdata'})) &&
169: (!defined($env{'form.newrandomization'}))) {
1.145 albertel 170: return ('grade', 'web','answer');
171: } else {
172: return ('web','answer');
173: }
1.289 raeburn 174: } elsif ($env{'form.problemmode'} eq 'edit') {
1.204 albertel 175: if ( $env{'form.submitted'} eq 'edit' ) {
1.289 raeburn 176: if ( $env{'form.submitbutton'} eq &mt('Save and View') ) {
1.145 albertel 177: return ('modified','web','answer');
178: } else {
1.211 albertel 179: return ('modified','no_output_web','edit');
1.145 albertel 180: }
181: } else {
1.211 albertel 182: return ('no_output_web','edit');
1.145 albertel 183: }
184: } else {
185: return ('web');
186: }
187: }
1.15 albertel 188: }
1.145 albertel 189: return ();
1.5 albertel 190: }
191:
1.3 albertel 192: sub setup_vars {
1.145 albertel 193: my ($target) = @_;
194: return ';'
1.11 albertel 195: # return ';$external::target='.$target.';';
1.2 albertel 196: }
197:
1.36 albertel 198: sub createmenu {
1.145 albertel 199: my ($which,$request)=@_;
200: if ($which eq 'grade') {
201: $request->print('<script language="JavaScript">
1.91 albertel 202: hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
1.52 albertel 203: "height=350,width=150,menubar=no");
204: </script>');
1.145 albertel 205: }
1.36 albertel 206: }
207:
1.200 albertel 208: sub proctor_checked_in {
1.226 albertel 209: my ($slot_name,$slot,$type)=@_;
210: my @possible_proctors=split(",",$slot->{'proctor'});
211:
1.248 albertel 212: return 1 if (!@possible_proctors);
213:
1.226 albertel 214: my $key;
215: if ($type eq 'Task') {
1.230 albertel 216: my $version=$Apache::lonhomework::history{'resource.0.version'};
217: $key ="resource.$version.0.checkedin";
1.226 albertel 218: } elsif ($type eq 'problem') {
219: $key ='resource.0.checkedin';
220: }
1.249 albertel 221: # backward compatability, used to be username@domain,
222: # now is username:domain
223: my $who = $Apache::lonhomework::history{$key};
224: if ($who !~ /:/) {
225: $who =~ tr/@/:/;
226: }
1.226 albertel 227: foreach my $possible (@possible_proctors) {
1.249 albertel 228: if ($who eq $possible
1.226 albertel 229: && $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
1.202 albertel 230: return 1;
231: }
232: }
1.226 albertel 233:
1.200 albertel 234: return 0;
235: }
236:
1.226 albertel 237: sub check_slot_access {
238: my ($id,$type)=@_;
239:
1.207 albertel 240: # does it pass normal muster
1.226 albertel 241: my ($status,$datemsg)=&check_access($id);
242:
1.252 albertel 243: my $useslots = &Apache::lonnet::EXT("resource.0.useslots");
1.251 albertel 244: if ($useslots ne 'resource' && $useslots ne 'map'
245: && $useslots ne 'map_map') {
1.226 albertel 246: return ($status,$datemsg);
247: }
248:
1.200 albertel 249: if ($status eq 'SHOW_ANSWER' ||
250: $status eq 'CLOSED' ||
251: $status eq 'INVALID_ACCESS' ||
252: $status eq 'UNAVAILABLE') {
253: return ($status,$datemsg);
254: }
1.204 albertel 255: if ($env{'request.state'} eq "construct") {
1.203 albertel 256: return ($status,$datemsg);
257: }
1.226 albertel 258:
259: if ($type eq 'Task') {
260: my $version=$Apache::lonhomework::history{'resource.version'};
1.230 albertel 261: if ($Apache::lonhomework::history{"resource.$version.0.checkedin"} &&
262: $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') {
1.226 albertel 263: return ('SHOW_ANSWER');
264: }
1.207 albertel 265: }
1.226 albertel 266:
1.288 raeburn 267: my $availablestudent = &Apache::lonnet::EXT("resource.0.availablestudent");
268: my $available = &Apache::lonnet::EXT("resource.0.available");
269: my @slots= (split(':',$availablestudent),split(':',$available));
1.210 albertel 270:
1.200 albertel 271: # if (!@slots) {
272: # return ($status,$datemsg);
273: # }
274: my $slotstatus='NOT_IN_A_SLOT';
1.206 albertel 275: my ($returned_slot,$slot_name);
1.210 albertel 276: foreach my $slot (@slots) {
1.241 albertel 277: $slot =~ s/(^\s*|\s*$)//g;
1.201 albertel 278: &Apache::lonxml::debug("getting $slot");
1.200 albertel 279: my %slot=&Apache::lonnet::get_slot($slot);
1.201 albertel 280: &Apache::lonhomework::showhash(%slot);
1.200 albertel 281: if ($slot{'starttime'} < time &&
282: $slot{'endtime'} > time &&
1.297 raeburn 283: &Apache::loncommon::check_ip_acc($slot{'ip'})) {
1.202 albertel 284: &Apache::lonxml::debug("$slot is good");
285: $slotstatus='NEEDS_CHECKIN';
286: $returned_slot=\%slot;
1.206 albertel 287: $slot_name=$slot;
1.200 albertel 288: last;
289: }
290: }
1.202 albertel 291: if ($slotstatus eq 'NEEDS_CHECKIN' &&
1.226 albertel 292: &proctor_checked_in($slot_name,$returned_slot,$type)) {
1.202 albertel 293: &Apache::lonxml::debug("protoctor checked in");
1.200 albertel 294: $slotstatus='CAN_ANSWER';
295: }
1.226 albertel 296:
1.235 albertel 297: my ($is_correct,$got_grade,$checkedin);
1.226 albertel 298: if ($type eq 'Task') {
1.230 albertel 299: my $version=$Apache::lonhomework::history{'resource.0.version'};
1.231 albertel 300: $got_grade =
301: ($Apache::lonhomework::history{"resource.$version.0.status"}
302: =~ /^(?:pass|fail)$/);
1.235 albertel 303: $is_correct =
304: ($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass'
305: || $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ );
1.226 albertel 306: $checkedin =
1.230 albertel 307: $Apache::lonhomework::history{"resource.$version.0.checkedin"};
1.226 albertel 308: } elsif ($type eq 'problem') {
1.252 albertel 309: $got_grade = 1;
310: $checkedin = $Apache::lonhomework::history{"resource.0.checkedin"};
311: $is_correct =
312: ($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/);
1.226 albertel 313: }
314:
1.235 albertel 315: &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
316:
1.243 albertel 317: # no slot is currently open, and has been checked in for this version
318: # but hasn't got a grade, therefore must be awaiting a grade
319: if (!defined($slot_name)
320: && $checkedin
1.236 albertel 321: && !$got_grade) {
322: return ('WAITING_FOR_GRADE');
323: }
324:
1.252 albertel 325: # no slot is currently open, and has been checked in for this version
326: # previous slot is therefore CLOSED, so therefore the problem is
327: if (!defined($slot_name)
328: && $checkedin
329: && $type eq 'problem') {
330: return ('CLOSED',$datemsg);
331: }
332:
1.226 albertel 333: if ($slotstatus eq 'NOT_IN_A_SLOT'
334: && $checkedin ) {
335:
1.231 albertel 336: if ($got_grade) {
1.209 albertel 337: return ('SHOW_ANSWER');
338: } else {
339: return ('WAITING_FOR_GRADE');
340: }
1.226 albertel 341:
1.207 albertel 342: }
1.255 albertel 343:
1.235 albertel 344: if ( $is_correct) {
1.255 albertel 345: if ($type eq 'problem') {
346: return ($status);
347: }
1.235 albertel 348: return ('SHOW_ANSWER');
349: }
1.255 albertel 350:
1.225 albertel 351: if ( $status eq 'CANNOT_ANSWER' &&
352: ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) {
353: return ($status,$datemsg);
354: }
355:
1.206 albertel 356: return ($slotstatus,$datemsg,$slot_name,$returned_slot);
1.198 albertel 357: }
1.200 albertel 358:
1.299 jms 359:
360: =pod
361:
362: =item check_access()
363:
364: JB, 9/24/2002: Any changes in this function may require a change
365: in lonnavmaps::resource::getDateStatus.
366:
367: =cut
368:
1.53 www 369: sub check_access {
1.145 albertel 370: my ($id) = @_;
371: my $date ='';
372: my $status;
373: my $datemsg = '';
374: my $lastdate = '';
375: my $type;
376: my $passed;
377:
1.204 albertel 378: if ($env{'request.state'} eq "construct") {
379: if ($env{'form.problemstate'}) {
380: if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
1.277 albertel 381: if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct'
382: && &hide_problem_status())) {
1.168 albertel 383: return ('CANNOT_ANSWER',
1.174 www 384: &mt('is in this state due to author settings.'));
1.167 albertel 385: }
1.165 albertel 386: } else {
1.204 albertel 387: return ($env{'form.problemstate'},
1.174 www 388: &mt('is in this state due to author settings.'));
1.165 albertel 389: }
390: }
1.145 albertel 391: &Apache::lonxml::debug("in construction ignoring dates");
392: $status='CAN_ANSWER';
1.146 albertel 393: $datemsg=&mt('is in under construction');
1.163 albertel 394: # return ($status,$datemsg);
1.145 albertel 395: }
396:
397: &Apache::lonxml::debug("checking for part :$id:");
398: &Apache::lonxml::debug("time:".time);
1.152 albertel 399:
1.261 albertel 400: my ($symb)=&Apache::lonnet::whichuser();
1.212 albertel 401: &Apache::lonxml::debug("symb:".$symb);
402: #if ($env{'request.state'} ne "construct" && $symb ne '') {
1.204 albertel 403: if ($env{'request.state'} ne "construct") {
1.288 raeburn 404: my $idacc = &Apache::lonnet::EXT("resource.$id.acc");
1.297 raeburn 405: my $allowed=&Apache::loncommon::check_ip_acc($idacc);
1.163 albertel 406: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
407: $status='INVALID_ACCESS';
408: $date=&mt("can not be accessed from your location.");
1.145 albertel 409: return($status,$date);
410: }
1.163 albertel 411:
1.226 albertel 412: foreach my $temp ("opendate","duedate","answerdate") {
1.163 albertel 413: $lastdate = $date;
1.247 albertel 414: if ($temp eq 'duedate') {
415: $date = &due_date($id);
416: } else {
417: $date = &Apache::lonnet::EXT("resource.$id.$temp");
418: }
419:
1.163 albertel 420: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
421: if ($thistype =~ /^(con_lost|no_such_host)/ ||
422: $date =~ /^(con_lost|no_such_host)/) {
423: $status='UNAVAILABLE';
424: $date=&mt("may open later.");
425: return($status,$date);
426: }
427: if ($thistype eq 'date_interval') {
428: if ($temp eq 'opendate') {
429: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
430: }
431: if ($temp eq 'answerdate') {
432: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
433: }
1.145 albertel 434: }
1.163 albertel 435: &Apache::lonxml::debug("found :$date: for :$temp:");
436: if ($date eq '') {
437: $date = &mt("an unknown date"); $passed = 0;
438: } elsif ($date eq 'con_lost') {
439: $date = &mt("an indeterminate date"); $passed = 0;
440: } else {
441: if (time < $date) { $passed = 0; } else { $passed = 1; }
1.274 www 442: $date = &Apache::lonlocal::locallocaltime($date);
1.145 albertel 443: }
1.163 albertel 444: if (!$passed) { $type=$temp; last; }
1.145 albertel 445: }
1.163 albertel 446: &Apache::lonxml::debug("have :$type:$passed:");
447: if ($passed) {
448: $status='SHOW_ANSWER';
449: $datemsg=$date;
450: } elsif ($type eq 'opendate') {
451: $status='CLOSED';
452: $datemsg = &mt("will open on")." $date";
453: } elsif ($type eq 'duedate') {
454: $status='CAN_ANSWER';
455: $datemsg = &mt("is due at")." $date";
456: } elsif ($type eq 'answerdate') {
457: $status='CLOSED';
458: $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
1.145 albertel 459: }
460: }
1.212 albertel 461: if ($status eq 'CAN_ANSWER' ||
462: (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
1.145 albertel 463: #check #tries, and if correct.
464: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
465: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
466: if ( $tries eq '' ) { $tries = '0'; }
1.164 albertel 467: if ( $maxtries eq '' &&
1.204 albertel 468: $env{'request.state'} ne 'construct') { $maxtries = '2'; }
1.164 albertel 469: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
1.145 albertel 470: # if (correct and show prob status) or excused then CANNOT_ANSWER
471: if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
472: &&
1.277 albertel 473: &show_problem_status())
1.145 albertel 474: ||
475: $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
476: $status = 'CANNOT_ANSWER';
477: }
1.285 albertel 478: if ($status eq 'CANNOT_ANSWER'
479: && &show_answer_problem_status()) {
480: $status = 'SHOW_ANSWER';
481: }
1.121 albertel 482: }
1.181 albertel 483: if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
1.286 albertel 484: my @interval=&Apache::lonnet::EXT("resource.$id.interval");
485: &Apache::lonxml::debug("looking for interval @interval");
486: if ($interval[0]) {
487: my $first_access=&Apache::lonnet::get_first_access($interval[1]);
1.177 albertel 488: &Apache::lonxml::debug("looking for accesstime $first_access");
489: if (!$first_access) {
490: $status='NOT_YET_VIEWED';
1.247 albertel 491: my $due_date = &due_date($id);
1.256 albertel 492: my $seconds_left = $due_date - time;
1.286 albertel 493: if ($seconds_left > $interval[0] || $due_date eq '') {
494: $seconds_left = $interval[0];
1.256 albertel 495: }
496: $datemsg=&seconds_to_human_length($seconds_left);
1.177 albertel 497: }
498: }
499: }
1.247 albertel 500:
1.133 albertel 501: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
502: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
503: # return ('UNCHECKEDOUT','needs to be checked out');
504: #}
1.54 www 505:
506:
1.145 albertel 507: &Apache::lonxml::debug("sending back :$status:$datemsg:");
508: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
509: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
510: $status='CAN_ANSWER';
1.146 albertel 511: $datemsg=&mt('is closed but you are allowed to view it');
1.145 albertel 512: }
1.106 albertel 513:
1.145 albertel 514: return ($status,$datemsg);
1.20 albertel 515: }
1.299 jms 516:
517:
518: =pod
519:
520: =item due_date()
521:
522: this should work exactly like the copy in lonnavmaps.pm
523:
524: =cut
525:
1.246 albertel 526: sub due_date {
1.250 albertel 527: my ($part_id,$symb,$udom,$uname)=@_;
1.246 albertel 528: my $date;
1.286 albertel 529: my @interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
1.250 albertel 530: $udom,$uname);
1.286 albertel 531: &Apache::lonxml::debug("looking for interval $part_id $symb @interval");
1.250 albertel 532: my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
533: $udom,$uname);
1.247 albertel 534: &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
1.286 albertel 535: if ($interval[0] =~ /\d+/) {
536: my $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
537: &Apache::lonxml::debug("looking for first_access $first_access ($interval[1])");
1.247 albertel 538: if (defined($first_access)) {
1.286 albertel 539: my $interval = $first_access+$interval[0];
1.283 albertel 540: $date = (!$due_date || $interval < $due_date) ? $interval
541: : $due_date;
1.247 albertel 542: } else {
543: $date = $due_date;
544: }
545: } else {
546: $date = $due_date;
1.246 albertel 547: }
548: return $date
549: }
550:
1.192 albertel 551: sub seconds_to_human_length {
552: my ($length)=@_;
553:
554: my $seconds=$length%60; $length=int($length/60);
555: my $minutes=$length%60; $length=int($length/60);
556: my $hours=$length%24; $length=int($length/24);
557: my $days=$length;
558:
559: my $timestr;
560: if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
561: if ($hours > 0) { $timestr.=($timestr?", ":"").
562: &mt('[quant,_1,hour]',$hours); }
563: if ($minutes > 0) { $timestr.=($timestr?", ":"").
564: &mt('[quant,_1,minute]',$minutes); }
565: if ($seconds > 0) { $timestr.=($timestr?", ":"").
566: &mt('[quant,_1,second]',$seconds); }
567: return $timestr;
568: }
569:
1.41 albertel 570: sub showhash {
1.145 albertel 571: my (%hash) = @_;
572: &showhashsubset(\%hash,'.');
573: return '';
1.79 albertel 574: }
575:
1.106 albertel 576: sub showarray {
577: my ($array)=@_;
578: my $string="(";
579: foreach my $elm (@{ $array }) {
1.193 albertel 580: if (ref($elm) eq 'ARRAY') {
581: $string.=&showarray($elm);
582: } elsif (ref($elm) eq 'HASH') {
583: $string.= "HASH --- \n<br />";
584: $string.= &showhashsubset($elm,'.');
1.106 albertel 585: } else {
586: $string.="$elm,"
587: }
588: }
589: chop($string);
590: $string.=")";
591: return $string;
592: }
593:
1.79 albertel 594: sub showhashsubset {
1.145 albertel 595: my ($hash,$keyre) = @_;
596: my $resultkey;
597: foreach $resultkey (sort keys %$hash) {
1.193 albertel 598: if ($resultkey !~ /$keyre/) { next; }
599: if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
600: &Apache::lonxml::debug("$resultkey ---- ".
601: &showarray($$hash{$resultkey}));
602: } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
603: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
604: &showhashsubset($$hash{$resultkey},'.');
605: } else {
606: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.145 albertel 607: }
608: }
609: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
610: return '';
1.41 albertel 611: }
612:
613: sub setuppermissions {
1.204 albertel 614: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
615: my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1.145 albertel 616: if (! $viewgrades &&
1.204 albertel 617: exists($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'});
1.145 albertel 621: }
1.244 albertel 622: $Apache::lonhomework::viewgrades = $viewgrades;
623:
1.185 albertel 624: if ($Apache::lonhomework::browse eq 'F' &&
1.204 albertel 625: $env{'form.devalidatecourseresdata'} eq 'on') {
1.261 albertel 626: my (undef,$courseid) = &Apache::lonnet::whichuser();
1.204 albertel 627: &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
628: $env{"course.$courseid.domain"});
1.185 albertel 629: }
1.244 albertel 630:
1.205 albertel 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;
1.244 albertel 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 = $queuegrade;
1.205 albertel 650: return '';
1.41 albertel 651: }
652:
1.253 albertel 653: sub unset_permissions {
654: undef($Apache::lonhomework::queuegrade);
655: undef($Apache::lonhomework::modifygrades);
656: undef($Apache::lonhomework::viewgrades);
657: undef($Apache::lonhomework::browse);
658: }
659:
1.41 albertel 660: sub setupheader {
1.120 albertel 661: my $request=$_[0];
1.197 albertel 662: &Apache::loncommon::content_type($request,'text/html');
1.120 albertel 663: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
664: &Apache::loncommon::no_cache($request);
665: }
1.196 albertel 666: # $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
667: # 'lastrevisiondate'));
1.120 albertel 668: $request->send_http_header;
669: return OK if $request->header_only;
670: return ''
1.41 albertel 671: }
1.35 albertel 672:
1.47 albertel 673: sub handle_save_or_undo {
1.145 albertel 674: my ($request,$problem,$result) = @_;
675: my $file = &Apache::lonnet::filelocation("",$request->uri);
676: my $filebak =$file.".bak";
677: my $filetmp =$file.".tmp";
678: my $error=0;
1.204 albertel 679: if ($env{'form.Undo'} eq &mt('undo')) {
1.145 albertel 680: my $error=0;
1.284 albertel 681: if (!&File::Copy::copy($file,$filetmp)) { $error=1; }
682: if ((!$error) && (!&File::Copy::copy($filebak,$file))) { $error=1; }
683: if ((!$error) && (!&File::Copy::move($filetmp,$filebak))) { $error=1; }
1.145 albertel 684: if (!$error) {
1.266 albertel 685: &Apache::lonxml::info("<p><b>".
686: &mt("Undid changes, Switched [_1] and [_2]",
687: '<span class="LC_filename">'.$filebak.
688: '</span>',
689: '<span class="LC_filename">'.$file.
690: '</span>')."</b></p>");
1.145 albertel 691: } else {
1.266 albertel 692: &Apache::lonxml::info("<p><span class=\"LC_error\">".
693: &mt("Unable to undo, unable to switch [_1] and [_2]",
694: '<span class="LC_filename">'.
695: $filebak.'</span>',
696: '<span class="LC_filename">'.
697: $file.'</span>')."</span></p>");
1.145 albertel 698: $error=1;
699: }
1.52 albertel 700: } else {
1.262 banghart 701: &Apache::lonnet::correct_line_ends($result);
1.145 albertel 702: my $fs=Apache::File->new(">$filebak");
703: if (defined($fs)) {
704: print $fs $$problem;
705: } else {
1.266 albertel 706: &Apache::lonxml::info("<span class=\"LC_error\">".
707: &mt("Unable to make backup [_1]",
708: '<span class="LC_filename">'.
709: $filebak.'</span>')."</span>");
1.145 albertel 710: $error=2;
711: }
712: my $fh=Apache::File->new(">$file");
713: if (defined($fh)) {
714: print $fh $$result;
715: } else {
1.266 albertel 716: &Apache::lonxml::info('<span class="LC_error">'.
717: &mt("Unable to write to [_1]",
718: '<span class="LC_filename">'.
719: $file.'</span>').
720: '</span>');
1.145 albertel 721: $error|=4;
722: }
1.52 albertel 723: }
1.145 albertel 724: return $error;
1.64 albertel 725: }
726:
1.101 albertel 727: sub analyze_header {
728: my ($request) = @_;
1.289 raeburn 729: my $js = &Apache::structuretags::setmode_javascript();
1.238 albertel 730: my $result =
1.289 raeburn 731: &Apache::loncommon::start_page('Analyzing a problem',$js);
1.240 albertel 732:
1.238 albertel 733: $result .=
734: &Apache::lonxml::message_location().'
1.101 albertel 735: <form name="lonhomework" method="POST" action="'.
1.204 albertel 736: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.289 raeburn 737: '<input type="hidden" name="problemmode" value="'.
738: $env{'form.problemmode'}.'" />'.
1.179 albertel 739: &Apache::structuretags::remember_problem_state().'
1.278 albertel 740: <div class="LC_edit_problem_analyze_header">
1.289 raeburn 741: <input type="button" name="submitmode" value="'.&mt("EditXML").'" '.
742: 'onclick="javascript:setmode(this.form,'."'editxml'".')" />
743: <input type="button" name="submitmode" value="'.&mt('Edit').'" '.
744: 'onclick="javascript:setmode(this.form,'."'edit'".')" />
1.278 albertel 745: <hr class="LC_edit_problem_divide" />
1.289 raeburn 746: <input type="button" name="submitmode" value="'.&mt("View").'" '.
747: 'onclick="javascript:setmode(this.form,'."'view'".')" />
1.278 albertel 748: <hr class="LC_edit_problem_divide" />
749: </div>
1.101 albertel 750: </form>';
1.171 albertel 751: &Apache::lonxml::add_messages(\$result);
1.101 albertel 752: $request->print($result);
753: $request->rflush();
754: }
755:
1.109 albertel 756: sub analyze_footer {
757: my ($request) = @_;
1.237 albertel 758: $request->print(&Apache::loncommon::end_page());
1.109 albertel 759: $request->rflush();
760: }
761:
1.74 albertel 762: sub analyze {
1.101 albertel 763: my ($request,$file) = @_;
764: &Apache::lonxml::debug("Analyze");
765: my $result;
766: my %overall;
1.219 www 767: my %seedexample;
1.101 albertel 768: my %allparts;
1.204 albertel 769: my $rndseed=$env{'form.rndseed'};
1.101 albertel 770: &analyze_header($request);
1.114 albertel 771: my %prog_state=
1.146 albertel 772: &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
773: &mt('Getting Problem Variants'),
1.204 albertel 774: $env{'form.numtoanalyze'},
1.175 albertel 775: 'inline',undef);
1.204 albertel 776: for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
1.114 albertel 777: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
1.146 albertel 778: &mt('last problem'));
1.182 albertel 779: if (&Apache::loncommon::connection_aborted($request)) { return; }
1.219 www 780: my $thisseed=$i+$rndseed;
1.101 albertel 781: my $subresult=&Apache::lonnet::ssi($request->uri,
782: ('grade_target' => 'analyze'),
1.219 www 783: ('rndseed' => $thisseed));
1.101 albertel 784: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
785: my %analyze=&Apache::lonnet::str2hash($subresult);
1.114 albertel 786: my @parts;
787: if (defined(@{ $analyze{'parts'} })) {
788: @parts=@{ $analyze{'parts'} };
789: }
1.101 albertel 790: foreach my $part (@parts) {
791: if (!exists($allparts{$part})) {$allparts{$part}=1;};
1.109 albertel 792: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
793: $analyze{$part.'.type'} eq 'stringresponse' ||
794: $analyze{$part.'.type'} eq 'formularesponse' ) {
1.263 albertel 795: foreach my $name (keys(%{ $analyze{$part.'.answer'} })) {
796: my $i=0;
797: foreach my $answer_part (@{ $analyze{$part.'.answer'}{$name} }) {
798: push( @{ $overall{$part.'.answer'}[$i] },
799: $answer_part);
800: my $concatanswer= join("\0",@{ $answer_part });
801: if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
1.266 albertel 802: $answer_part = ['<span class="LC_error">'.&mt('Error').'</span>'];
1.263 albertel 803: }
804: $seedexample{join("\0",$part,$i,@{$answer_part})}=
805: $thisseed;
806: $i++;
807: }
1.219 www 808: }
1.275 albertel 809: if (!keys(%{ $analyze{$part.'.answer'} })) {
810: my $answer_part =
811: ['<span class="LC_error">'.&mt('Error').'</span>'];
812: $seedexample{join("\0",$part,0,@{$answer_part})}=
813: $thisseed;
814: push( @{ $overall{$part.'.answer'}[0] },
815: $answer_part);
816: }
1.101 albertel 817: }
818: }
819: }
1.114 albertel 820: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
1.146 albertel 821: &mt('Analyzing Results'));
1.278 albertel 822: $request->print('<hr class="LC_edit_problem_divide" />'.&mt('List of possible answers').': ');
1.134 albertel 823: foreach my $part (sort(keys(%allparts))) {
1.109 albertel 824: if (defined(@{ $overall{$part.'.answer'} })) {
1.263 albertel 825: for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
826: my $num_cols=scalar(@{ $overall{$part.'.answer'}[$i][0] });
827: $request->print('<table class="thinborder"><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part);
828: if (scalar(@{ $overall{$part.'.answer'} }) > 1) {
829: $request->print(&mt(' Answer [_1]',$i+1));
830: }
831: $request->print('</th></tr>');
832: my %frequency;
833: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) {
834: $frequency{join("\0",@{ $answer })}++;
835: }
836: $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'<br />('
837: .&mt('click for example').')</th></tr>');
838: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
839: $request->print('<tr><td class="center">'.
840: join('</td><td class="center">',split("\0",$answer)).
841: '</td><td class="center"><a href="'.$request->uri.'?rndseed='.$seedexample{join("\0",$part,$i,$answer)}.'">'.$frequency{$answer}.
842: '</a></td></tr>');
843: }
844: $request->print('</table>');
1.109 albertel 845: }
846: } else {
1.162 albertel 847: $request->print('<p>'.&mt('Response').' '.$part.' '.
1.146 albertel 848: &mt('is not analyzable at this time').'</p>');
1.101 albertel 849: }
850: }
1.130 albertel 851: if (scalar(keys(%allparts)) == 0 ) {
1.215 raeburn 852: $request->print('<p>'.&mt('Found no analyzable responses in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
1.130 albertel 853: }
1.114 albertel 854: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1.109 albertel 855: &analyze_footer($request);
1.101 albertel 856: &Apache::lonhomework::showhash(%overall);
857: return $result;
1.74 albertel 858: }
859:
1.277 albertel 860: {
861: my $show_problem_status;
862: sub reset_show_problem_status {
863: undef($show_problem_status);
864: }
865:
866: sub set_show_problem_status {
867: my ($new_status) = @_;
868: $show_problem_status = lc($new_status);
869: }
870:
871: sub hide_problem_status {
872: return ($show_problem_status eq 'no'
873: || $show_problem_status eq 'no_feedback_ever');
874: }
875:
876: sub show_problem_status {
877: return ($show_problem_status eq 'yes'
1.285 albertel 878: || $show_problem_status eq 'answer'
1.277 albertel 879: || $show_problem_status eq '');
880: }
881:
882: sub show_some_problem_status {
883: return ($show_problem_status eq 'no');
884: }
885:
886: sub show_no_problem_status {
887: return ($show_problem_status eq 'no_feedback_ever');
888: }
1.285 albertel 889:
890: sub show_answer_problem_status {
891: return ($show_problem_status eq 'answer');
892: }
1.277 albertel 893: }
894:
1.64 albertel 895: sub editxmlmode {
1.145 albertel 896: my ($request,$file) = @_;
897: my $result;
898: my $problem=&Apache::lonnet::getfile($file);
899: if ($problem eq -1) {
1.146 albertel 900: &Apache::lonxml::error("<b> ".&mt('Unable to find').
901: " <i>$file</i></b>");
1.145 albertel 902: $problem='';
903: }
1.204 albertel 904: if (defined($env{'form.editxmltext'}) || defined($env{'form.Undo'})) {
1.145 albertel 905: my $error=&handle_save_or_undo($request,\$problem,
1.204 albertel 906: \$env{'form.editxmltext'});
1.145 albertel 907: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
908: }
1.204 albertel 909: &Apache::lonhomework::showhashsubset(\%env,'^form');
1.289 raeburn 910: if ( $env{'form.submitbutton'} eq &mt('Save and View') ) {
1.204 albertel 911: &Apache::lonhomework::showhashsubset(\%env,'^form');
1.289 raeburn 912: $env{'form.problemmode'}='view';
1.145 albertel 913: &renderpage($request,$file);
914: } else {
915: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1.160 www 916: my $xml_help = '<table><tr><td>'.
917: &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
918: "Problem Editing Help").
919: '</td><td>'.
1.254 albertel 920: &Apache::loncommon::help_open_menu(undef,undef,5,'Authoring').
1.178 albertel 921: '</td></tr></table>';
1.145 albertel 922: if ($cols > 80) { $cols = 80; }
923: if ($cols < 70) { $cols = 70; }
924: if ($rows < 20) { $rows = 20; }
1.269 albertel 925: my $js =
926: &Apache::edit::js_change_detection().
1.289 raeburn 927: &Apache::loncommon::resize_textarea_js().
1.296 raeburn 928: &Apache::structuretags::setmode_javascript().
1.298 foxr 929: &Apache::lonhtmlcommon::dragmath_js("EditMathPopup");
1.270 albertel 930: my $only_body = ($env{'environment.remote'} eq 'off')? 0 : 1;
1.296 raeburn 931: my $dragmath_button =
932: &Apache::lonhtmlcommon::dragmath_button("LC_editxmltext",1);
1.238 albertel 933: my $start_page =
1.269 albertel 934: &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
935: {'no_auto_mt_title' => 1,
1.270 albertel 936: 'only_body' => $only_body,
1.269 albertel 937: 'add_entries' => {
938: 'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
939: 'onload' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
940: }});
1.238 albertel 941: $result.=$start_page.
1.213 albertel 942: &renderpage($request,$file,['no_output_web'],1).
1.281 albertel 943: '<form '.&Apache::edit::form_change_detection().' name="lonhomework" method="POST" action="'.
1.204 albertel 944: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.179 albertel 945: &Apache::structuretags::remember_problem_state().'
1.278 albertel 946: <div class="LC_edit_problem_editxml_header">
1.280 albertel 947: <table class="LC_edit_problem_header_title"><tr><td>
948: '.&mt('Problem Editing').&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').'
949: </td><td align="right">
950: '.&Apache::loncommon::helpLatexCheatsheet().'
951: </td></tr>
952: </table>
953: <div class="LC_edit_problem_discards">
1.289 raeburn 954: <input type="hidden" name="problemmode" value="editxml" />
1.294 foxr 955:
1.289 raeburn 956: <input type="button" name="submitmode" accesskey="d" value="'.&mt('Discard Edits and View').'" '.
957: 'onclick="javascript:setmode(this.form,'."'discard'".')" />
958: <input type="button" '.&Apache::edit::submit_ask_anyway('setmode(this.form,'."'edit'".')').'name="submitmode" accesskey="e" value="'.&mt('Edit').'" />
1.280 albertel 959: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
1.296 raeburn 960: '.$dragmath_button.'
1.280 albertel 961: </div>
962: <div class="LC_edit_problem_saves">
1.289 raeburn 963: <input type="submit" name="submitbutton" accesskey="s" value="'.&mt('Save').'" />
1.296 raeburn 964: <input type="submit" name="submitbutton" accesskey="v" value="'.&mt('Save and View').'" />
1.280 albertel 965: </div>
966: <hr class="LC_edit_problem_divide" />
1.281 albertel 967: '.&Apache::lonxml::message_location().'
1.278 albertel 968: </div>
1.280 albertel 969: ' . '
1.269 albertel 970: <textarea '.&Apache::edit::element_change_detection().
971: ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" '.
972: ' name="editxmltext" id="LC_editxmltext">'.
973: &HTML::Entities::encode($problem,'<>&"').'</textarea>
974: <div id="LC_aftertextarea">
975: </div>
1.238 albertel 976: </form>'.&Apache::loncommon::end_page();
1.171 albertel 977: &Apache::lonxml::add_messages(\$result);
1.145 albertel 978: $request->print($result);
979: }
980: return '';
1.47 albertel 981: }
1.189 albertel 982:
1.299 jms 983: =pod
984:
985: =item renderpage()
986:
987: Render the page in whatever target desired.
988:
989: =cut
990:
1.41 albertel 991: sub renderpage {
1.213 albertel 992: my ($request,$file,$targets,$return_string) = @_;
1.52 albertel 993:
1.211 albertel 994: my @targets = @{$targets || [&get_target()]};
1.204 albertel 995: &Apache::lonhomework::showhashsubset(\%env,'form.');
1.145 albertel 996: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1.268 albertel 997:
1.171 albertel 998: my $overall_result;
1.145 albertel 999: foreach my $target (@targets) {
1.183 albertel 1000: # FIXME need to do something intelligent when a problem goes
1001: # from viewable to not viewable due to map conditions
1002: #&setuppermissions();
1003: #if ( $Apache::lonhomework::browse ne '2'
1004: # && $Apache::lonhomework::browse ne 'F' ) {
1005: # $request->print(" You most likely shouldn't see me.");
1006: #}
1.145 albertel 1007: #my $t0 = [&gettimeofday()];
1.211 albertel 1008: my $output=1;
1009: if ($target eq 'no_output_web') {
1010: $target = 'web'; $output=0;
1011: }
1.145 albertel 1012: my $problem=&Apache::lonnet::getfile($file);
1.222 albertel 1013: my $result;
1.145 albertel 1014: if ($problem eq -1) {
1.260 albertel 1015: $problem='';
1.222 albertel 1016: my $filename=(split('/',$file))[-1];
1.260 albertel 1017: my $error =
1018: "<b> ".&mt('Unable to find [_1]',
1019: ' <span class="LC_filename">'.$filename.'</span>')
1020: ."</b>";
1021: $result.=
1022: &Apache::loncommon::simple_error_page($request,'Not available',
1023: $error);
1024: return;
1.145 albertel 1025: }
1.52 albertel 1026:
1.145 albertel 1027: my %mystyle;
1028: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
1029: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
1.204 albertel 1030: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
1.145 albertel 1031:
1032: &Apache::lonxml::debug("Should be parsing now");
1.222 albertel 1033: $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
1034: &setup_vars($target),%mystyle);
1.273 albertel 1035: &finished_parsing();
1.214 albertel 1036: if (!$output) { $result = ''; }
1.145 albertel 1037: #$request->print("Result follows:");
1038: if ($target eq 'modified') {
1039: &handle_save_or_undo($request,\$problem,\$result);
1040: } else {
1041: if ($target eq 'analyze') {
1042: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
1043: undef(%Apache::lonhomework::analyze);
1044: }
1045: #my $td=&tv_interval($t0);
1046: #if ( $Apache::lonxml::debug) {
1047: #$result =~ s:</body>::;
1048: #$result.="<br />Spent $td seconds processing target $target\n</body>";
1049: #}
1.171 albertel 1050: # $request->print($result);
1051: $overall_result.=$result;
1052: # $request->rflush();
1.145 albertel 1053: }
1054: #$request->print(":Result ends");
1055: #my $td=&tv_interval($t0);
1.52 albertel 1056: }
1.213 albertel 1057: if (!$return_string) {
1058: &Apache::lonxml::add_messages(\$overall_result);
1059: $request->print($overall_result);
1060: $request->rflush();
1061: } else {
1062: return $overall_result;
1063: }
1.41 albertel 1064: }
1065:
1.273 albertel 1066: sub finished_parsing {
1067: undef($Apache::lonhomework::parsing_a_problem);
1068: undef($Apache::lonhomework::parsing_a_task);
1069: }
1070:
1.42 albertel 1071: sub get_template_list {
1.282 albertel 1072: my ($extension) = @_;
1.145 albertel 1073: my $result;
1074: my @allnames;
1075: &Apache::lonxml::debug("Looking for :$extension:");
1.282 albertel 1076: my $glob_extension = $extension;
1077: if ($extension eq 'survey' || $extension eq 'exam') {
1078: $glob_extension = 'problem';
1079: }
1080: my @files = glob($Apache::lonnet::perlvar{'lonIncludes'}.
1081: '/templates/*.'.$glob_extension);
1.292 www 1082: @files = map {[$_,&mt(&Apache::lonnet::metadata($_, 'title')),
1083: (&Apache::lonnet::metadata($_, 'category')?&mt(&Apache::lonnet::metadata($_, 'category')):&mt('Miscellaneous')),
1084: &mt(&Apache::lonnet::metadata($_, 'help'))]} (@files);
1085: @files = sort {$a->[2].$a->[1] cmp $b->[2].$b->[1]} (@files);
1.287 raeburn 1086: my ($midpoint,$seconddiv,$numfiles);
1087: $numfiles = 0;
1088: foreach my $file (@files) {
1089: next if ($file->[1] !~ /\S/);
1090: $numfiles ++;
1091: }
1092: if ($numfiles > 0) {
1093: $result = '<div class="LC_left_float">';
1094: $midpoint = int($numfiles/2);
1095: if ($numfiles%2) {
1096: $midpoint ++;
1097: }
1098: }
1099: my $count = 0;
1.292 www 1100: my $currentcategory='';
1.282 albertel 1101: foreach my $file (@files) {
1102: next if ($file->[1] !~ /\S/);
1.292 www 1103: if ($file->[2] ne $currentcategory) {
1104: $currentcategory=$file->[2];
1105: if ((!$seconddiv) && ($count >= $midpoint)) {
1106: $result .= '</div>'."\n".'<div class="LC_left_float">'."\n";
1107: $seconddiv = 1;
1108: }
1109: $result.='<h3>'.$currentcategory.'</h3>';
1.293 www 1110: $count++;
1.292 www 1111: }
1.282 albertel 1112: $result .=
1113: '<label><input type="radio" name="template" value="'.$file->[0].'" />'.
1.292 www 1114: $file->[1].'</label>';
1115: if ($file->[3]) {
1116: $result.=&Apache::loncommon::help_open_topic($file->[3]);
1117: }
1118: my $filename=$file->[0];
1119: $filename=~s/^\/home\/httpd\/html//;
1120: $result.=' <font size="-2"><a href="'.$filename.'" target="sample">'.&mt('Example').'</font></a><br />'."\n";
1.287 raeburn 1121: $count ++;
1122: }
1123: if ($numfiles > 0) {
1124: $result .= '</div>'."\n".'<div class="LC_clear_float_footer"></div>'."\n";
1.42 albertel 1125: }
1.145 albertel 1126: return $result;
1.42 albertel 1127: }
1128:
1129: sub newproblem {
1.65 matthew 1130: my ($request) = @_;
1.282 albertel 1131:
1132: if ($env{'form.template'}) {
1133: my $file = $env{'form.template'};
1.65 matthew 1134: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.282 albertel 1135: &File::Copy::copy($file,$dest);
1.65 matthew 1136: &renderpage($request,$dest);
1.282 albertel 1137: return;
1138: }
1139:
1140: my ($extension) = ($request->uri =~ m/\.(\w+)$/);
1141: &Apache::lonxml::debug("Looking for :$extension:");
1142: my $templatelist=&get_template_list($extension);
1143: if ($env{'form.newfile'} && !$templatelist) {
1144: # no templates found
1.131 albertel 1145: my $templatefilename =
1.258 albertel 1146: $request->dir_config('lonIncludes').'/templates/blank.'.$extension;
1.131 albertel 1147: &Apache::lonxml::debug("$templatefilename");
1148: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.282 albertel 1149: &File::Copy::copy($templatefilename,$dest);
1.131 albertel 1150: &renderpage($request,$dest);
1.85 albertel 1151: } else {
1.176 albertel 1152: my $url=&HTML::Entities::encode($request->uri,'<>&"');
1153: my $shownurl=$url;
1.157 albertel 1154: $shownurl=~s-^/~-/priv/-;
1.65 matthew 1155: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.128 albertel 1156: my $errormsg;
1.85 albertel 1157: my $instructions;
1.240 albertel 1158: my $start_page =
1159: &Apache::loncommon::start_page("Create New $extension");
1.258 albertel 1160: $request->print("
1.240 albertel 1161: $start_page
1.258 albertel 1162: <h1>".&mt("Creating a new $extension resource.")."</h1>
1.128 albertel 1163: $errormsg
1.258 albertel 1164: ".&mt("The requested file [_1] currently does not exist.",
1165: "<tt>$shownurl</tt>")."
1.105 www 1166: <p>
1.258 albertel 1167: <b>
1168: ".&mt("To create a new $extension, select a template from the".
1.282 albertel 1169: " list below. Then click on the \"Create $extension\" button.")."</b>
1.259 albertel 1170: </p><form action=\"$url\" method=\"POST\">");
1.258 albertel 1171:
1.85 albertel 1172: if (defined($templatelist)) {
1.282 albertel 1173: $request->print($templatelist);
1.85 albertel 1174: }
1.282 albertel 1175: $request->print('<br /><input type="submit" name="newfile" value="'.
1176: &mt("Create $extension").'" />');
1.238 albertel 1177: $request->print("</form></p>".&Apache::loncommon::end_page());
1.65 matthew 1178: }
1.282 albertel 1179: return;
1.42 albertel 1180: }
1181:
1.268 albertel 1182: sub update_construct_style {
1183: if ($env{'request.state'} eq "construct"
1.289 raeburn 1184: && $env{'form.problemmode'} eq 'view'
1.268 albertel 1185: && defined($env{'form.submitted'})
1186: && !defined($env{'form.resetdata'})
1187: && !defined($env{'form.newrandomization'})) {
1188: if ((!$env{'form.style_file'} && $env{'construct.style'})
1189: ||$env{'form.clear_style_file'}) {
1190: &Apache::lonnet::delenv('construct\\.style');
1191: } elsif ($env{'form.style_file'}
1192: && $env{'construct.style'} ne $env{'form.style_file'}) {
1.291 raeburn 1193: &Apache::lonnet::appenv({'construct.style' =>
1194: $env{'form.style_file'}});
1.268 albertel 1195: }
1196: }
1197: }
1198:
1199:
1.41 albertel 1200: sub handler {
1.145 albertel 1201: #my $t0 = [&gettimeofday()];
1202: my $request=$_[0];
1.223 albertel 1203: $Apache::lonxml::request=$request;
1.204 albertel 1204: $Apache::lonxml::debug=$env{'user.debug'};
1205: $env{'request.uri'}=$request->uri;
1.180 albertel 1206: &setuppermissions();
1.193 albertel 1207:
1.145 albertel 1208: my $file=&Apache::lonnet::filelocation("",$request->uri);
1209:
1210: #check if we know where we are
1.204 albertel 1211: if ($env{'request.course.fn'} && !&Apache::lonnet::symbread()) {
1.145 albertel 1212: # if we are browsing we might not be able to know where we are
1.173 albertel 1213: if ($Apache::lonhomework::browse ne 'F' &&
1.204 albertel 1214: $env{'request.state'} ne "construct") {
1.145 albertel 1215: #should know where we are, so ask
1.253 albertel 1216: &unset_permissions();
1217: $request->internal_redirect('/adm/ambiguous');
1218: return OK;
1.145 albertel 1219: }
1220: }
1.253 albertel 1221: if (&setupheader($request)) {
1222: &unset_permissions();
1223: return OK;
1224: }
1.244 albertel 1225: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
1.204 albertel 1226: &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
1.261 albertel 1227: my ($symb) = &Apache::lonnet::whichuser();
1.145 albertel 1228: &Apache::lonxml::debug('symb is '.$symb);
1.204 albertel 1229: if ($env{'request.state'} eq "construct") {
1.145 albertel 1230: if ( -e $file ) {
1231: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1232: ['problemmode']);
1.204 albertel 1233: if (!(defined $env{'form.problemmode'})) {
1.145 albertel 1234: #first visit to problem in construction space
1.289 raeburn 1235: $env{'form.problemmode'}= 'view';
1.145 albertel 1236: &renderpage($request,$file);
1.289 raeburn 1237: } elsif ($env{'form.problemmode'} eq 'editxml') {
1.145 albertel 1238: &editxmlmode($request,$file);
1.289 raeburn 1239: } elsif ($env{'form.problemmode'} eq 'calcanswers') {
1.145 albertel 1240: &analyze($request,$file);
1241: } else {
1.268 albertel 1242: &update_construct_style();
1.145 albertel 1243: &renderpage($request,$file);
1244: }
1245: } else {
1246: # requested file doesn't exist in contruction space
1247: &newproblem($request);
1248: }
1249: } else {
1250: # just render the page normally outside of construction space
1251: &Apache::lonxml::debug("not construct");
1.52 albertel 1252: &renderpage($request,$file);
1.41 albertel 1253: }
1.145 albertel 1254: #my $td=&tv_interval($t0);
1255: #&Apache::lonxml::debug("Spent $td seconds processing");
1256: # always turn off debug messages
1257: $Apache::lonxml::debug=0;
1.253 albertel 1258: &unset_permissions();
1.145 albertel 1259: return OK;
1.52 albertel 1260:
1.1 albertel 1261: }
1262:
1263: 1;
1264: __END__
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