Annotation of loncom/homework/lonhomework.pm, revision 1.270
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.270 ! albertel 4: # $Id: lonhomework.pm,v 1.269 2007/08/18 00:01:45 albertel 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();
1.169 albertel 50: use Apache::drawimage();
1.26 www 51: use Apache::Constants qw(:common);
1.73 albertel 52: use HTML::Entities();
1.83 albertel 53: use Apache::loncommon();
1.146 albertel 54: use Apache::lonlocal;
1.179 albertel 55: use Time::HiRes qw( gettimeofday tv_interval );
1.188 foxr 56: use Apache::lonnet();
57:
1.189 albertel 58: # FIXME - improve commenting
1.188 foxr 59:
1.43 albertel 60:
1.69 harris41 61: BEGIN {
1.145 albertel 62: &Apache::lonxml::register_insert();
1.43 albertel 63: }
64:
1.188 foxr 65:
66: #
1.189 albertel 67: # Decides what targets to render for.
1.188 foxr 68: # Implicit inputs:
69: # Various session environment variables:
1.189 albertel 70: # request.state - published - is a /res/ resource
71: # uploaded - is a /uploaded/ resource
72: # contruct - is a /priv/ resource
73: # form.grade_target - a form parameter requesting a specific target
1.5 albertel 74: sub get_target {
1.204 albertel 75: &Apache::lonxml::debug("request.state = $env{'request.state'}");
76: if( defined($env{'form.grade_target'})) {
77: &Apache::lonxml::debug("form.grade_target= $env{'form.grade_target'}");
1.188 foxr 78: } else {
1.189 albertel 79: &Apache::lonxml::debug("form.grade_target <undefined>");
1.188 foxr 80: }
1.204 albertel 81: if (($env{'request.state'} eq "published") ||
82: ($env{'request.state'} eq "uploaded")) {
83: if ( defined($env{'form.grade_target'} )
84: && ($env{'form.grade_target'} eq 'tex')) {
85: return ($env{'form.grade_target'});
86: } elsif ( defined($env{'form.grade_target'} )
1.145 albertel 87: && ($Apache::lonhomework::viewgrades eq 'F' )) {
1.207 albertel 88: return ($env{'form.grade_target'});
1.244 albertel 89: } elsif ( $env{'form.grade_target'} eq 'webgrade'
90: && ($Apache::lonhomework::queuegrade eq 'F' )) {
91: return ($env{'form.grade_target'});
1.207 albertel 92: }
93: if ($env{'form.webgrade'} &&
1.244 albertel 94: ($Apache::lonhomework::modifygrades eq 'F'
95: || $Apache::lonhomework::queuegrade eq 'F' )) {
1.207 albertel 96: return ('grade','webgrade');
1.145 albertel 97: }
1.204 albertel 98: if ( defined($env{'form.submitted'}) &&
99: ( !defined($env{'form.newrandomization'}))) {
1.217 albertel 100: return ('grade', 'web');
1.145 albertel 101: } else {
1.217 albertel 102: return ('web');
1.145 albertel 103: }
1.204 albertel 104: } elsif ($env{'request.state'} eq "construct") {
105: if ( defined($env{'form.grade_target'}) ) {
106: return ($env{'form.grade_target'});
1.145 albertel 107: }
1.204 albertel 108: if ( defined($env{'form.preview'})) {
109: if ( defined($env{'form.submitted'})) {
1.145 albertel 110: return ('grade', 'web');
111: } else {
112: return ('web');
113: }
114: } else {
1.267 albertel 115: if ($env{'form.problemstate'} eq 'WEB_GRADE') {
116: #$env{'form.webgrade'} = 'yes';
117: return ('grade','webgrade','answer');
118: } elsif ( $env{'form.problemmode'} eq &mt('View') ||
1.204 albertel 119: $env{'form.problemmode'} eq &mt('Discard Edits and View')) {
120: if ( defined($env{'form.submitted'}) &&
121: (!defined($env{'form.resetdata'})) &&
122: (!defined($env{'form.newrandomization'}))) {
1.145 albertel 123: return ('grade', 'web','answer');
124: } else {
125: return ('web','answer');
126: }
1.204 albertel 127: } elsif ( $env{'form.problemmode'} eq &mt('Edit') ||
128: $env{'form.problemmode'} eq 'Edit') {
129: if ( $env{'form.submitted'} eq 'edit' ) {
130: if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {
1.145 albertel 131: return ('modified','web','answer');
132: } else {
1.211 albertel 133: return ('modified','no_output_web','edit');
1.145 albertel 134: }
135: } else {
1.211 albertel 136: return ('no_output_web','edit');
1.145 albertel 137: }
138: } else {
139: return ('web');
140: }
141: }
1.15 albertel 142: }
1.145 albertel 143: return ();
1.5 albertel 144: }
145:
1.3 albertel 146: sub setup_vars {
1.145 albertel 147: my ($target) = @_;
148: return ';'
1.11 albertel 149: # return ';$external::target='.$target.';';
1.2 albertel 150: }
151:
1.36 albertel 152: sub createmenu {
1.145 albertel 153: my ($which,$request)=@_;
154: if ($which eq 'grade') {
155: $request->print('<script language="JavaScript">
1.91 albertel 156: hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
1.52 albertel 157: "height=350,width=150,menubar=no");
158: </script>');
1.145 albertel 159: }
1.36 albertel 160: }
161:
1.200 albertel 162: sub proctor_checked_in {
1.226 albertel 163: my ($slot_name,$slot,$type)=@_;
164: my @possible_proctors=split(",",$slot->{'proctor'});
165:
1.248 albertel 166: return 1 if (!@possible_proctors);
167:
1.226 albertel 168: my $key;
169: if ($type eq 'Task') {
1.230 albertel 170: my $version=$Apache::lonhomework::history{'resource.0.version'};
171: $key ="resource.$version.0.checkedin";
1.226 albertel 172: } elsif ($type eq 'problem') {
173: $key ='resource.0.checkedin';
174: }
1.249 albertel 175: # backward compatability, used to be username@domain,
176: # now is username:domain
177: my $who = $Apache::lonhomework::history{$key};
178: if ($who !~ /:/) {
179: $who =~ tr/@/:/;
180: }
1.226 albertel 181: foreach my $possible (@possible_proctors) {
1.249 albertel 182: if ($who eq $possible
1.226 albertel 183: && $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
1.202 albertel 184: return 1;
185: }
186: }
1.226 albertel 187:
1.200 albertel 188: return 0;
189: }
190:
1.52 albertel 191: $Apache::lonxml::browse='';
1.152 albertel 192: sub check_ip_acc {
193: my ($acc)=@_;
1.218 albertel 194: &Apache::lonxml::debug("acc is $acc");
195: if (!defined($acc) || $acc =~ /^\s*$/ || $acc =~/^\s*no\s*$/i) {
196: return 1;
197: }
1.152 albertel 198: my $allowed=0;
199: my $ip=$ENV{'REMOTE_ADDR'};
200: my $name;
201: foreach my $pattern (split(',',$acc)) {
1.233 albertel 202: $pattern =~ s/^\s*//;
203: $pattern =~ s/\s*$//;
1.152 albertel 204: if ($pattern =~ /\*$/) {
205: #35.8.*
206: $pattern=~s/\*//;
207: if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
208: } elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) {
209: #35.8.3.[34-56]
210: my $low=$2;
211: my $high=$3;
212: $pattern=$1;
213: if ($ip =~ /^\Q$pattern\E/) {
214: my $last=(split(/\./,$ip))[3];
215: if ($last <=$high && $last >=$low) { $allowed=1; }
216: }
217: } elsif ($pattern =~ /^\*/) {
218: #*.msu.edu
219: $pattern=~s/\*//;
220: if (!defined($name)) {
221: use Socket;
222: my $netaddr=inet_aton($ip);
223: ($name)=gethostbyaddr($netaddr,AF_INET);
1.158 albertel 224: }
1.152 albertel 225: if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
226: } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
227: #127.0.0.1
228: if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
229: } else {
230: #some.name.com
231: if (!defined($name)) {
232: use Socket;
233: my $netaddr=inet_aton($ip);
234: ($name)=gethostbyaddr($netaddr,AF_INET);
235: }
236: if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
237: }
238: if ($allowed) { last; }
239: }
240: return $allowed;
241: }
1.198 albertel 242:
1.226 albertel 243: sub check_slot_access {
244: my ($id,$type)=@_;
245:
1.207 albertel 246: # does it pass normal muster
1.226 albertel 247: my ($status,$datemsg)=&check_access($id);
248:
1.252 albertel 249: my $useslots = &Apache::lonnet::EXT("resource.0.useslots");
1.251 albertel 250: if ($useslots ne 'resource' && $useslots ne 'map'
251: && $useslots ne 'map_map') {
1.226 albertel 252: return ($status,$datemsg);
253: }
254:
1.200 albertel 255: if ($status eq 'SHOW_ANSWER' ||
256: $status eq 'CLOSED' ||
257: $status eq 'INVALID_ACCESS' ||
258: $status eq 'UNAVAILABLE') {
259: return ($status,$datemsg);
260: }
1.204 albertel 261: if ($env{'request.state'} eq "construct") {
1.203 albertel 262: return ($status,$datemsg);
263: }
1.226 albertel 264:
265: if ($type eq 'Task') {
266: my $version=$Apache::lonhomework::history{'resource.version'};
1.230 albertel 267: if ($Apache::lonhomework::history{"resource.$version.0.checkedin"} &&
268: $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') {
1.226 albertel 269: return ('SHOW_ANSWER');
270: }
1.207 albertel 271: }
1.226 albertel 272:
1.210 albertel 273: my @slots=
1.252 albertel 274: (split(':',&Apache::lonnet::EXT("resource.0.availablestudent")),
275: split(':',&Apache::lonnet::EXT("resource.0.available")));
1.210 albertel 276:
1.200 albertel 277: # if (!@slots) {
278: # return ($status,$datemsg);
279: # }
280: my $slotstatus='NOT_IN_A_SLOT';
1.206 albertel 281: my ($returned_slot,$slot_name);
1.210 albertel 282: foreach my $slot (@slots) {
1.241 albertel 283: $slot =~ s/(^\s*|\s*$)//g;
1.201 albertel 284: &Apache::lonxml::debug("getting $slot");
1.200 albertel 285: my %slot=&Apache::lonnet::get_slot($slot);
1.201 albertel 286: &Apache::lonhomework::showhash(%slot);
1.200 albertel 287: if ($slot{'starttime'} < time &&
288: $slot{'endtime'} > time &&
1.201 albertel 289: &check_ip_acc($slot{'ip'})) {
1.202 albertel 290: &Apache::lonxml::debug("$slot is good");
291: $slotstatus='NEEDS_CHECKIN';
292: $returned_slot=\%slot;
1.206 albertel 293: $slot_name=$slot;
1.200 albertel 294: last;
295: }
296: }
1.202 albertel 297: if ($slotstatus eq 'NEEDS_CHECKIN' &&
1.226 albertel 298: &proctor_checked_in($slot_name,$returned_slot,$type)) {
1.202 albertel 299: &Apache::lonxml::debug("protoctor checked in");
1.200 albertel 300: $slotstatus='CAN_ANSWER';
301: }
1.226 albertel 302:
1.235 albertel 303: my ($is_correct,$got_grade,$checkedin);
1.226 albertel 304: if ($type eq 'Task') {
1.230 albertel 305: my $version=$Apache::lonhomework::history{'resource.0.version'};
1.231 albertel 306: $got_grade =
307: ($Apache::lonhomework::history{"resource.$version.0.status"}
308: =~ /^(?:pass|fail)$/);
1.235 albertel 309: $is_correct =
310: ($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass'
311: || $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ );
1.226 albertel 312: $checkedin =
1.230 albertel 313: $Apache::lonhomework::history{"resource.$version.0.checkedin"};
1.226 albertel 314: } elsif ($type eq 'problem') {
1.252 albertel 315: $got_grade = 1;
316: $checkedin = $Apache::lonhomework::history{"resource.0.checkedin"};
317: $is_correct =
318: ($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/);
1.226 albertel 319: }
320:
1.235 albertel 321: &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
322:
1.243 albertel 323: # no slot is currently open, and has been checked in for this version
324: # but hasn't got a grade, therefore must be awaiting a grade
325: if (!defined($slot_name)
326: && $checkedin
1.236 albertel 327: && !$got_grade) {
328: return ('WAITING_FOR_GRADE');
329: }
330:
1.252 albertel 331: # no slot is currently open, and has been checked in for this version
332: # previous slot is therefore CLOSED, so therefore the problem is
333: if (!defined($slot_name)
334: && $checkedin
335: && $type eq 'problem') {
336: return ('CLOSED',$datemsg);
337: }
338:
1.226 albertel 339: if ($slotstatus eq 'NOT_IN_A_SLOT'
340: && $checkedin ) {
341:
1.231 albertel 342: if ($got_grade) {
1.209 albertel 343: return ('SHOW_ANSWER');
344: } else {
345: return ('WAITING_FOR_GRADE');
346: }
1.226 albertel 347:
1.207 albertel 348: }
1.255 albertel 349:
1.235 albertel 350: if ( $is_correct) {
1.255 albertel 351: if ($type eq 'problem') {
352: return ($status);
353: }
1.235 albertel 354: return ('SHOW_ANSWER');
355: }
1.255 albertel 356:
1.225 albertel 357: if ( $status eq 'CANNOT_ANSWER' &&
358: ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) {
359: return ($status,$datemsg);
360: }
361:
1.206 albertel 362: return ($slotstatus,$datemsg,$slot_name,$returned_slot);
1.198 albertel 363: }
1.200 albertel 364:
1.92 bowersj2 365: # JB, 9/24/2002: Any changes in this function may require a change
366: # in lonnavmaps::resource::getDateStatus.
1.53 www 367: sub check_access {
1.145 albertel 368: my ($id) = @_;
369: my $date ='';
370: my $status;
371: my $datemsg = '';
372: my $lastdate = '';
373: my $type;
374: my $passed;
375:
1.204 albertel 376: if ($env{'request.state'} eq "construct") {
377: if ($env{'form.problemstate'}) {
378: if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
379: if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' &&
1.167 albertel 380: lc($Apache::lonhomework::problemstatus) eq 'no')) {
1.168 albertel 381: return ('CANNOT_ANSWER',
1.174 www 382: &mt('is in this state due to author settings.'));
1.167 albertel 383: }
1.165 albertel 384: } else {
1.204 albertel 385: return ($env{'form.problemstate'},
1.174 www 386: &mt('is in this state due to author settings.'));
1.165 albertel 387: }
388: }
1.145 albertel 389: &Apache::lonxml::debug("in construction ignoring dates");
390: $status='CAN_ANSWER';
1.146 albertel 391: $datemsg=&mt('is in under construction');
1.163 albertel 392: # return ($status,$datemsg);
1.145 albertel 393: }
394:
395: &Apache::lonxml::debug("checking for part :$id:");
396: &Apache::lonxml::debug("time:".time);
1.152 albertel 397:
1.261 albertel 398: my ($symb)=&Apache::lonnet::whichuser();
1.212 albertel 399: &Apache::lonxml::debug("symb:".$symb);
400: #if ($env{'request.state'} ne "construct" && $symb ne '') {
1.204 albertel 401: if ($env{'request.state'} ne "construct") {
1.163 albertel 402: my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));
403: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
404: $status='INVALID_ACCESS';
405: $date=&mt("can not be accessed from your location.");
1.145 albertel 406: return($status,$date);
407: }
1.163 albertel 408:
1.226 albertel 409: foreach my $temp ("opendate","duedate","answerdate") {
1.163 albertel 410: $lastdate = $date;
1.247 albertel 411: if ($temp eq 'duedate') {
412: $date = &due_date($id);
413: } else {
414: $date = &Apache::lonnet::EXT("resource.$id.$temp");
415: }
416:
1.163 albertel 417: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
418: if ($thistype =~ /^(con_lost|no_such_host)/ ||
419: $date =~ /^(con_lost|no_such_host)/) {
420: $status='UNAVAILABLE';
421: $date=&mt("may open later.");
422: return($status,$date);
423: }
424: if ($thistype eq 'date_interval') {
425: if ($temp eq 'opendate') {
426: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
427: }
428: if ($temp eq 'answerdate') {
429: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
430: }
1.145 albertel 431: }
1.163 albertel 432: &Apache::lonxml::debug("found :$date: for :$temp:");
433: if ($date eq '') {
434: $date = &mt("an unknown date"); $passed = 0;
435: } elsif ($date eq 'con_lost') {
436: $date = &mt("an indeterminate date"); $passed = 0;
437: } else {
438: if (time < $date) { $passed = 0; } else { $passed = 1; }
439: $date = localtime $date;
1.145 albertel 440: }
1.163 albertel 441: if (!$passed) { $type=$temp; last; }
1.145 albertel 442: }
1.163 albertel 443: &Apache::lonxml::debug("have :$type:$passed:");
444: if ($passed) {
445: $status='SHOW_ANSWER';
446: $datemsg=$date;
447: } elsif ($type eq 'opendate') {
448: $status='CLOSED';
449: $datemsg = &mt("will open on")." $date";
450: } elsif ($type eq 'duedate') {
451: $status='CAN_ANSWER';
452: $datemsg = &mt("is due at")." $date";
453: } elsif ($type eq 'answerdate') {
454: $status='CLOSED';
455: $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
1.145 albertel 456: }
457: }
1.212 albertel 458: if ($status eq 'CAN_ANSWER' ||
459: (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
1.145 albertel 460: #check #tries, and if correct.
461: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
462: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
463: if ( $tries eq '' ) { $tries = '0'; }
1.164 albertel 464: if ( $maxtries eq '' &&
1.204 albertel 465: $env{'request.state'} ne 'construct') { $maxtries = '2'; }
1.164 albertel 466: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
1.145 albertel 467: # if (correct and show prob status) or excused then CANNOT_ANSWER
468: if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
469: &&
470: lc($Apache::lonhomework::problemstatus) ne 'no')
471: ||
472: $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
473: $status = 'CANNOT_ANSWER';
474: }
1.121 albertel 475: }
1.181 albertel 476: if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
1.177 albertel 477: my $interval=&Apache::lonnet::EXT("resource.$id.interval");
478: &Apache::lonxml::debug("looking for interval $interval");
479: if ($interval) {
480: my $first_access=&Apache::lonnet::get_first_access('map');
481: &Apache::lonxml::debug("looking for accesstime $first_access");
482: if (!$first_access) {
483: $status='NOT_YET_VIEWED';
1.247 albertel 484: my $due_date = &due_date($id);
1.256 albertel 485: my $seconds_left = $due_date - time;
486: if ($seconds_left > $interval || $due_date eq '') {
487: $seconds_left = $interval;
488: }
489: $datemsg=&seconds_to_human_length($seconds_left);
1.177 albertel 490: }
491: }
492: }
1.247 albertel 493:
1.133 albertel 494: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
495: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
496: # return ('UNCHECKEDOUT','needs to be checked out');
497: #}
1.54 www 498:
499:
1.145 albertel 500: &Apache::lonxml::debug("sending back :$status:$datemsg:");
501: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
502: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
503: $status='CAN_ANSWER';
1.146 albertel 504: $datemsg=&mt('is closed but you are allowed to view it');
1.145 albertel 505: }
1.106 albertel 506:
1.145 albertel 507: return ($status,$datemsg);
1.20 albertel 508: }
1.247 albertel 509: # this should work exactly like the copy in lonnavmaps.pm
1.246 albertel 510: sub due_date {
1.250 albertel 511: my ($part_id,$symb,$udom,$uname)=@_;
1.246 albertel 512: my $date;
1.250 albertel 513: my $interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
514: $udom,$uname);
1.247 albertel 515: &Apache::lonxml::debug("looking for interval $part_id $symb $interval");
1.250 albertel 516: my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
517: $udom,$uname);
1.247 albertel 518: &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
1.257 albertel 519: if ($interval =~ /\d+/) {
1.246 albertel 520: my $first_access=&Apache::lonnet::get_first_access('map',$symb);
1.257 albertel 521: &Apache::lonxml::debug("looking for first_access $first_access");
1.247 albertel 522: if (defined($first_access)) {
523: $interval = $first_access+$interval;
524: $date = ($interval < $due_date)? $interval : $due_date;
525: } else {
526: $date = $due_date;
527: }
528: } else {
529: $date = $due_date;
1.246 albertel 530: }
531: return $date
532: }
533:
1.192 albertel 534: sub seconds_to_human_length {
535: my ($length)=@_;
536:
537: my $seconds=$length%60; $length=int($length/60);
538: my $minutes=$length%60; $length=int($length/60);
539: my $hours=$length%24; $length=int($length/24);
540: my $days=$length;
541:
542: my $timestr;
543: if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
544: if ($hours > 0) { $timestr.=($timestr?", ":"").
545: &mt('[quant,_1,hour]',$hours); }
546: if ($minutes > 0) { $timestr.=($timestr?", ":"").
547: &mt('[quant,_1,minute]',$minutes); }
548: if ($seconds > 0) { $timestr.=($timestr?", ":"").
549: &mt('[quant,_1,second]',$seconds); }
550: return $timestr;
551: }
552:
1.41 albertel 553: sub showhash {
1.145 albertel 554: my (%hash) = @_;
555: &showhashsubset(\%hash,'.');
556: return '';
1.79 albertel 557: }
558:
1.106 albertel 559: sub showarray {
560: my ($array)=@_;
561: my $string="(";
562: foreach my $elm (@{ $array }) {
1.193 albertel 563: if (ref($elm) eq 'ARRAY') {
564: $string.=&showarray($elm);
565: } elsif (ref($elm) eq 'HASH') {
566: $string.= "HASH --- \n<br />";
567: $string.= &showhashsubset($elm,'.');
1.106 albertel 568: } else {
569: $string.="$elm,"
570: }
571: }
572: chop($string);
573: $string.=")";
574: return $string;
575: }
576:
1.79 albertel 577: sub showhashsubset {
1.145 albertel 578: my ($hash,$keyre) = @_;
579: my $resultkey;
580: foreach $resultkey (sort keys %$hash) {
1.193 albertel 581: if ($resultkey !~ /$keyre/) { next; }
582: if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
583: &Apache::lonxml::debug("$resultkey ---- ".
584: &showarray($$hash{$resultkey}));
585: } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
586: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
587: &showhashsubset($$hash{$resultkey},'.');
588: } else {
589: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.145 albertel 590: }
591: }
592: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
593: return '';
1.41 albertel 594: }
595:
596: sub setuppermissions {
1.204 albertel 597: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
598: my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1.145 albertel 599: if (! $viewgrades &&
1.204 albertel 600: exists($env{'request.course.sec'}) &&
601: $env{'request.course.sec'} !~ /^\s*$/) {
602: $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
603: '/'.$env{'request.course.sec'});
1.145 albertel 604: }
1.244 albertel 605: $Apache::lonhomework::viewgrades = $viewgrades;
606:
1.185 albertel 607: if ($Apache::lonhomework::browse eq 'F' &&
1.204 albertel 608: $env{'form.devalidatecourseresdata'} eq 'on') {
1.261 albertel 609: my (undef,$courseid) = &Apache::lonnet::whichuser();
1.204 albertel 610: &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
611: $env{"course.$courseid.domain"});
1.185 albertel 612: }
1.244 albertel 613:
1.205 albertel 614: my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
615: if (! $modifygrades &&
616: exists($env{'request.course.sec'}) &&
617: $env{'request.course.sec'} !~ /^\s*$/) {
618: $modifygrades =
619: &Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
620: '/'.$env{'request.course.sec'});
621: }
622: $Apache::lonhomework::modifygrades = $modifygrades;
1.244 albertel 623:
624: my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'});
625: if (! $queuegrade &&
626: exists($env{'request.course.sec'}) &&
627: $env{'request.course.sec'} !~ /^\s*$/) {
628: $queuegrade =
629: &Apache::lonnet::allowed('qgr',$env{'request.course.id'}.
630: '/'.$env{'request.course.sec'});
631: }
632: $Apache::lonhomework::queuegrade = $queuegrade;
1.205 albertel 633: return '';
1.41 albertel 634: }
635:
1.253 albertel 636: sub unset_permissions {
637: undef($Apache::lonhomework::queuegrade);
638: undef($Apache::lonhomework::modifygrades);
639: undef($Apache::lonhomework::viewgrades);
640: undef($Apache::lonhomework::browse);
641: }
642:
1.41 albertel 643: sub setupheader {
1.120 albertel 644: my $request=$_[0];
1.197 albertel 645: &Apache::loncommon::content_type($request,'text/html');
1.120 albertel 646: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
647: &Apache::loncommon::no_cache($request);
648: }
1.196 albertel 649: # $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
650: # 'lastrevisiondate'));
1.120 albertel 651: $request->send_http_header;
652: return OK if $request->header_only;
653: return ''
1.41 albertel 654: }
1.35 albertel 655:
1.47 albertel 656: sub handle_save_or_undo {
1.145 albertel 657: my ($request,$problem,$result) = @_;
658: my $file = &Apache::lonnet::filelocation("",$request->uri);
659: my $filebak =$file.".bak";
660: my $filetmp =$file.".tmp";
661: my $error=0;
1.204 albertel 662: if ($env{'form.Undo'} eq &mt('undo')) {
1.145 albertel 663: my $error=0;
664: if (!copy($file,$filetmp)) { $error=1; }
665: if ((!$error) && (!copy($filebak,$file))) { $error=1; }
666: if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
667: if (!$error) {
1.266 albertel 668: &Apache::lonxml::info("<p><b>".
669: &mt("Undid changes, Switched [_1] and [_2]",
670: '<span class="LC_filename">'.$filebak.
671: '</span>',
672: '<span class="LC_filename">'.$file.
673: '</span>')."</b></p>");
1.145 albertel 674: } else {
1.266 albertel 675: &Apache::lonxml::info("<p><span class=\"LC_error\">".
676: &mt("Unable to undo, unable to switch [_1] and [_2]",
677: '<span class="LC_filename">'.
678: $filebak.'</span>',
679: '<span class="LC_filename">'.
680: $file.'</span>')."</span></p>");
1.145 albertel 681: $error=1;
682: }
1.52 albertel 683: } else {
1.262 banghart 684: &Apache::lonnet::correct_line_ends($result);
1.145 albertel 685: my $fs=Apache::File->new(">$filebak");
686: if (defined($fs)) {
687: print $fs $$problem;
1.266 albertel 688: &Apache::lonxml::info("<b>".&mt("Making Backup to [_1]",
689: '<span class="LC_filename">'.
690: $filebak.'</span>').
691: "</b>");
1.145 albertel 692: } else {
1.266 albertel 693: &Apache::lonxml::info("<span class=\"LC_error\">".
694: &mt("Unable to make backup [_1]",
695: '<span class="LC_filename">'.
696: $filebak.'</span>')."</span>");
1.145 albertel 697: $error=2;
698: }
699: my $fh=Apache::File->new(">$file");
700: if (defined($fh)) {
701: print $fh $$result;
1.266 albertel 702: &Apache::lonxml::info("<b>".&mt("Saving Modifications to [_1]",
703: '<span class="LC_filename">'.
704: $file.'</span>' )."</b>");
1.145 albertel 705: } else {
1.266 albertel 706: &Apache::lonxml::info('<span class="LC_error">'.
707: &mt("Unable to write to [_1]",
708: '<span class="LC_filename">'.
709: $file.'</span>').
710: '</span>');
1.145 albertel 711: $error|=4;
712: }
1.52 albertel 713: }
1.145 albertel 714: return $error;
1.64 albertel 715: }
716:
1.101 albertel 717: sub analyze_header {
718: my ($request) = @_;
1.238 albertel 719: my $result =
1.240 albertel 720: &Apache::loncommon::start_page('Analyzing a problem',undef);
721:
1.238 albertel 722: $result .=
723: &Apache::lonxml::message_location().'
1.101 albertel 724: <form name="lonhomework" method="POST" action="'.
1.204 albertel 725: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.179 albertel 726: &Apache::structuretags::remember_problem_state().'
1.146 albertel 727: <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
728: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.101 albertel 729: <hr />
1.146 albertel 730: <input type="submit" name="submit" value="'.&mt("View").'" />
1.101 albertel 731: <hr />
732: </form>';
1.171 albertel 733: &Apache::lonxml::add_messages(\$result);
1.101 albertel 734: $request->print($result);
735: $request->rflush();
736: }
737:
1.109 albertel 738: sub analyze_footer {
739: my ($request) = @_;
1.237 albertel 740: $request->print(&Apache::loncommon::end_page());
1.109 albertel 741: $request->rflush();
742: }
743:
1.74 albertel 744: sub analyze {
1.101 albertel 745: my ($request,$file) = @_;
746: &Apache::lonxml::debug("Analyze");
747: my $result;
748: my %overall;
1.219 www 749: my %seedexample;
1.101 albertel 750: my %allparts;
1.204 albertel 751: my $rndseed=$env{'form.rndseed'};
1.101 albertel 752: &analyze_header($request);
1.114 albertel 753: my %prog_state=
1.146 albertel 754: &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
755: &mt('Getting Problem Variants'),
1.204 albertel 756: $env{'form.numtoanalyze'},
1.175 albertel 757: 'inline',undef);
1.204 albertel 758: for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
1.114 albertel 759: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
1.146 albertel 760: &mt('last problem'));
1.182 albertel 761: if (&Apache::loncommon::connection_aborted($request)) { return; }
1.219 www 762: my $thisseed=$i+$rndseed;
1.101 albertel 763: my $subresult=&Apache::lonnet::ssi($request->uri,
764: ('grade_target' => 'analyze'),
1.219 www 765: ('rndseed' => $thisseed));
1.101 albertel 766: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
767: my %analyze=&Apache::lonnet::str2hash($subresult);
1.114 albertel 768: my @parts;
769: if (defined(@{ $analyze{'parts'} })) {
770: @parts=@{ $analyze{'parts'} };
771: }
1.101 albertel 772: foreach my $part (@parts) {
773: if (!exists($allparts{$part})) {$allparts{$part}=1;};
1.109 albertel 774: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
775: $analyze{$part.'.type'} eq 'stringresponse' ||
776: $analyze{$part.'.type'} eq 'formularesponse' ) {
1.263 albertel 777: foreach my $name (keys(%{ $analyze{$part.'.answer'} })) {
778: my $i=0;
779: foreach my $answer_part (@{ $analyze{$part.'.answer'}{$name} }) {
780: push( @{ $overall{$part.'.answer'}[$i] },
781: $answer_part);
782: my $concatanswer= join("\0",@{ $answer_part });
783: if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
1.266 albertel 784: $answer_part = ['<span class="LC_error">'.&mt('Error').'</span>'];
1.263 albertel 785: }
786: $seedexample{join("\0",$part,$i,@{$answer_part})}=
787: $thisseed;
788: $i++;
789: }
1.219 www 790: }
1.101 albertel 791: }
792: }
793: }
1.114 albertel 794: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
1.146 albertel 795: &mt('Analyzing Results'));
1.175 albertel 796: $request->print('<hr />'.&mt('List of possible answers').': ');
1.134 albertel 797: foreach my $part (sort(keys(%allparts))) {
1.109 albertel 798: if (defined(@{ $overall{$part.'.answer'} })) {
1.263 albertel 799: for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
800: my $num_cols=scalar(@{ $overall{$part.'.answer'}[$i][0] });
801: $request->print('<table class="thinborder"><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part);
802: if (scalar(@{ $overall{$part.'.answer'} }) > 1) {
803: $request->print(&mt(' Answer [_1]',$i+1));
804: }
805: $request->print('</th></tr>');
806: my %frequency;
807: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) {
808: $frequency{join("\0",@{ $answer })}++;
809: }
810: $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'<br />('
811: .&mt('click for example').')</th></tr>');
812: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
813: $request->print('<tr><td class="center">'.
814: join('</td><td class="center">',split("\0",$answer)).
815: '</td><td class="center"><a href="'.$request->uri.'?rndseed='.$seedexample{join("\0",$part,$i,$answer)}.'">'.$frequency{$answer}.
816: '</a></td></tr>');
817: }
818: $request->print('</table>');
1.109 albertel 819: }
820: } else {
1.162 albertel 821: $request->print('<p>'.&mt('Response').' '.$part.' '.
1.146 albertel 822: &mt('is not analyzable at this time').'</p>');
1.101 albertel 823: }
824: }
1.130 albertel 825: if (scalar(keys(%allparts)) == 0 ) {
1.215 raeburn 826: $request->print('<p>'.&mt('Found no analyzable responses in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
1.130 albertel 827: }
1.114 albertel 828: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1.109 albertel 829: &analyze_footer($request);
1.101 albertel 830: &Apache::lonhomework::showhash(%overall);
831: return $result;
1.74 albertel 832: }
833:
1.64 albertel 834: sub editxmlmode {
1.145 albertel 835: my ($request,$file) = @_;
836: my $result;
837: my $problem=&Apache::lonnet::getfile($file);
838: if ($problem eq -1) {
1.146 albertel 839: &Apache::lonxml::error("<b> ".&mt('Unable to find').
840: " <i>$file</i></b>");
1.145 albertel 841: $problem='';
842: }
1.204 albertel 843: if (defined($env{'form.editxmltext'}) || defined($env{'form.Undo'})) {
1.145 albertel 844: my $error=&handle_save_or_undo($request,\$problem,
1.204 albertel 845: \$env{'form.editxmltext'});
1.145 albertel 846: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
847: }
1.204 albertel 848: &Apache::lonhomework::showhashsubset(\%env,'^form');
849: if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {
850: &Apache::lonhomework::showhashsubset(\%env,'^form');
851: $env{'form.problemmode'}='View';
1.145 albertel 852: &renderpage($request,$file);
853: } else {
854: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1.160 www 855: my $xml_help = '<table><tr><td>'.
856: &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
857: "Problem Editing Help").
858: '</td><td>'.
1.254 albertel 859: &Apache::loncommon::help_open_menu(undef,undef,5,'Authoring').
1.178 albertel 860: '</td></tr></table>';
1.145 albertel 861: if ($cols > 80) { $cols = 80; }
862: if ($cols < 70) { $cols = 70; }
863: if ($rows < 20) { $rows = 20; }
1.269 albertel 864: my $js =
865: &Apache::edit::js_change_detection().
866: &Apache::loncommon::resize_textarea_js();
1.270 ! albertel 867: my $only_body = ($env{'environment.remote'} eq 'off')? 0 : 1;
1.238 albertel 868: my $start_page =
1.269 albertel 869: &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
870: {'no_auto_mt_title' => 1,
1.270 ! albertel 871: 'only_body' => $only_body,
1.269 albertel 872: 'add_entries' => {
873: 'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
874: 'onload' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
875: }});
1.227 albertel 876:
1.238 albertel 877: $result.=$start_page.
1.213 albertel 878: &renderpage($request,$file,['no_output_web'],1).
879: &Apache::lonxml::message_location().'
1.227 albertel 880: <form '.&Apache::edit::form_change_detection().' name="lonhomework" method="POST" action="'.
1.204 albertel 881: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.179 albertel 882: &Apache::structuretags::remember_problem_state().'
1.146 albertel 883: <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
1.170 matthew 884: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
1.232 albertel 885: <input type="submit" '.&Apache::edit::submit_ask_anyway().'name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
1.228 albertel 886: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
1.64 albertel 887: <hr />
1.170 matthew 888: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
889: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
1.64 albertel 890: <hr />
1.110 albertel 891: ' . $xml_help . '
1.269 albertel 892: <textarea '.&Apache::edit::element_change_detection().
893: ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" '.
894: ' name="editxmltext" id="LC_editxmltext">'.
895: &HTML::Entities::encode($problem,'<>&"').'</textarea>
896: <div id="LC_aftertextarea">
897: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
898: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
899: </div>
1.238 albertel 900: </form>'.&Apache::loncommon::end_page();
1.171 albertel 901: &Apache::lonxml::add_messages(\$result);
1.145 albertel 902: $request->print($result);
903: }
904: return '';
1.47 albertel 905: }
1.189 albertel 906:
1.188 foxr 907: #
908: # Render the page in whatever target desired.
909: #
1.41 albertel 910: sub renderpage {
1.213 albertel 911: my ($request,$file,$targets,$return_string) = @_;
1.52 albertel 912:
1.211 albertel 913: my @targets = @{$targets || [&get_target()]};
1.204 albertel 914: &Apache::lonhomework::showhashsubset(\%env,'form.');
1.145 albertel 915: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1.268 albertel 916:
1.171 albertel 917: my $overall_result;
1.145 albertel 918: foreach my $target (@targets) {
1.183 albertel 919: # FIXME need to do something intelligent when a problem goes
920: # from viewable to not viewable due to map conditions
921: #&setuppermissions();
922: #if ( $Apache::lonhomework::browse ne '2'
923: # && $Apache::lonhomework::browse ne 'F' ) {
924: # $request->print(" You most likely shouldn't see me.");
925: #}
1.145 albertel 926: #my $t0 = [&gettimeofday()];
1.211 albertel 927: my $output=1;
928: if ($target eq 'no_output_web') {
929: $target = 'web'; $output=0;
930: }
1.145 albertel 931: my $problem=&Apache::lonnet::getfile($file);
1.222 albertel 932: my $result;
1.145 albertel 933: if ($problem eq -1) {
1.260 albertel 934: $problem='';
1.222 albertel 935: my $filename=(split('/',$file))[-1];
1.260 albertel 936: my $error =
937: "<b> ".&mt('Unable to find [_1]',
938: ' <span class="LC_filename">'.$filename.'</span>')
939: ."</b>";
940: $result.=
941: &Apache::loncommon::simple_error_page($request,'Not available',
942: $error);
943: return;
1.145 albertel 944: }
1.52 albertel 945:
1.145 albertel 946: my %mystyle;
947: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
948: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
1.204 albertel 949: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
1.145 albertel 950:
951: &Apache::lonxml::debug("Should be parsing now");
1.222 albertel 952: $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
953: &setup_vars($target),%mystyle);
1.145 albertel 954: undef($Apache::lonhomework::parsing_a_problem);
1.214 albertel 955: if (!$output) { $result = ''; }
1.145 albertel 956: #$request->print("Result follows:");
957: if ($target eq 'modified') {
958: &handle_save_or_undo($request,\$problem,\$result);
959: } else {
960: if ($target eq 'analyze') {
961: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
962: undef(%Apache::lonhomework::analyze);
963: }
964: #my $td=&tv_interval($t0);
965: #if ( $Apache::lonxml::debug) {
966: #$result =~ s:</body>::;
967: #$result.="<br />Spent $td seconds processing target $target\n</body>";
968: #}
1.171 albertel 969: # $request->print($result);
970: $overall_result.=$result;
971: # $request->rflush();
1.145 albertel 972: }
973: #$request->print(":Result ends");
974: #my $td=&tv_interval($t0);
1.52 albertel 975: }
1.213 albertel 976: if (!$return_string) {
977: &Apache::lonxml::add_messages(\$overall_result);
978: $request->print($overall_result);
979: $request->rflush();
980: } else {
981: return $overall_result;
982: }
1.41 albertel 983: }
984:
1.42 albertel 985: # with no arg it returns a HTML <option> list of the template titles
986: # with one arg it returns the filename associated with the arg passed
987: sub get_template_list {
1.145 albertel 988: my ($namewanted,$extension) = @_;
989: my $result;
990: my @allnames;
991: &Apache::lonxml::debug("Looking for :$extension:");
992: foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
1.268 albertel 993: &Apache::lonxml::debug("Looking at $file");
1.145 albertel 994: my $name=&Apache::lonnet::metadata($file,'title');
1.268 albertel 995: &Apache::lonxml::debug("Got a name $name");
1.145 albertel 996: if ($namewanted && ($name eq $namewanted)) {
997: $result=$file;
998: last;
999: } else {
1000: if ($name) { push (@allnames, $name); }
1001: }
1002: }
1003: if (@allnames && !$result) {
1.146 albertel 1004: $result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".
1.145 albertel 1005: join('</option><option>',sort(@allnames)).'</option>';
1.42 albertel 1006: }
1.145 albertel 1007: return $result;
1.42 albertel 1008: }
1009:
1010: sub newproblem {
1.65 matthew 1011: my ($request) = @_;
1012: my $extension=$request->uri;
1013: $extension=~s:^.*\.([\w]+)$:$1:;
1014: &Apache::lonxml::debug("Looking for :$extension:");
1.131 albertel 1015: my $templatelist=&get_template_list('',$extension);
1.204 albertel 1016: if ($env{'form.template'} &&
1017: $env{'form.template'} ne "Select a $extension template") {
1.65 matthew 1018: use File::Copy;
1.204 albertel 1019: my $file = &get_template_list($env{'form.template'},$extension);
1.65 matthew 1020: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1021: copy($file,$dest);
1022: &renderpage($request,$dest);
1.204 albertel 1023: } elsif($env{'form.newfile'} && !$templatelist) {
1.131 albertel 1024: # I don't like hard-coded filenames but for now, this will work.
1025: use File::Copy;
1026: my $templatefilename =
1.258 albertel 1027: $request->dir_config('lonIncludes').'/templates/blank.'.$extension;
1.131 albertel 1028: &Apache::lonxml::debug("$templatefilename");
1029: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1030: copy($templatefilename,$dest);
1031: &renderpage($request,$dest);
1.85 albertel 1032: } else {
1.176 albertel 1033: my $url=&HTML::Entities::encode($request->uri,'<>&"');
1034: my $shownurl=$url;
1.157 albertel 1035: $shownurl=~s-^/~-/priv/-;
1.65 matthew 1036: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.128 albertel 1037: my $errormsg;
1.204 albertel 1038: if ($env{'form.newfile'}) {
1.266 albertel 1039: $errormsg='<p><span class="LC_error">'.&mt('You did not select a template.').'</span></p>'."\n";
1.128 albertel 1040: }
1.85 albertel 1041: my $instructions;
1.240 albertel 1042: my $start_page =
1043: &Apache::loncommon::start_page("Create New $extension");
1.258 albertel 1044: $request->print("
1.240 albertel 1045: $start_page
1.258 albertel 1046: <h1>".&mt("Creating a new $extension resource.")."</h1>
1.128 albertel 1047: $errormsg
1.258 albertel 1048: ".&mt("The requested file [_1] currently does not exist.",
1049: "<tt>$shownurl</tt>")."
1.105 www 1050: <p>
1.258 albertel 1051: <b>
1052: ".&mt("To create a new $extension, select a template from the".
1053: "pull-down menu below. Then click on the \"Create $extension\" button.")."</b>
1.259 albertel 1054: </p><form action=\"$url\" method=\"POST\">");
1.258 albertel 1055:
1.85 albertel 1056: if (defined($templatelist)) {
1057: $request->print("<select name=\"template\">$templatelist</select>");
1058: }
1.146 albertel 1059: $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />");
1.238 albertel 1060: $request->print("</form></p>".&Apache::loncommon::end_page());
1.65 matthew 1061: }
1062: return '';
1.42 albertel 1063: }
1064:
1.268 albertel 1065: sub update_construct_style {
1066: if ($env{'request.state'} eq "construct"
1067: && $env{'form.problemmode'} eq &mt('View')
1068: && defined($env{'form.submitted'})
1069: && !defined($env{'form.resetdata'})
1070: && !defined($env{'form.newrandomization'})) {
1071: if ((!$env{'form.style_file'} && $env{'construct.style'})
1072: ||$env{'form.clear_style_file'}) {
1073: &Apache::lonnet::delenv('construct\\.style');
1074: } elsif ($env{'form.style_file'}
1075: && $env{'construct.style'} ne $env{'form.style_file'}) {
1076: &Apache::lonnet::appenv('construct.style' =>
1077: $env{'form.style_file'});
1078: }
1079: }
1080: }
1081:
1082:
1.41 albertel 1083: sub handler {
1.145 albertel 1084: #my $t0 = [&gettimeofday()];
1085: my $request=$_[0];
1.223 albertel 1086: $Apache::lonxml::request=$request;
1.204 albertel 1087: $Apache::lonxml::debug=$env{'user.debug'};
1088: $env{'request.uri'}=$request->uri;
1.180 albertel 1089: &setuppermissions();
1.145 albertel 1090: # some times multiple problemmodes are submitted, need to select
1091: # the last one
1.204 albertel 1092: if ( defined($env{'form.problemmode'}) && ref($env{'form.problemmode'}) ) {
1093: my $mode=$env{'form.problemmode'}->[-1];
1094: undef $env{'form.problemmode'};
1095: $env{'form.problemmode'}=$mode;
1.145 albertel 1096: }
1.193 albertel 1097:
1.145 albertel 1098: my $file=&Apache::lonnet::filelocation("",$request->uri);
1099:
1100: #check if we know where we are
1.204 albertel 1101: if ($env{'request.course.fn'} && !&Apache::lonnet::symbread()) {
1.145 albertel 1102: # if we are browsing we might not be able to know where we are
1.173 albertel 1103: if ($Apache::lonhomework::browse ne 'F' &&
1.204 albertel 1104: $env{'request.state'} ne "construct") {
1.145 albertel 1105: #should know where we are, so ask
1.253 albertel 1106: &unset_permissions();
1107: $request->internal_redirect('/adm/ambiguous');
1108: return OK;
1.145 albertel 1109: }
1110: }
1.253 albertel 1111: if (&setupheader($request)) {
1112: &unset_permissions();
1113: return OK;
1114: }
1.244 albertel 1115: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
1.204 albertel 1116: &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
1.261 albertel 1117: my ($symb) = &Apache::lonnet::whichuser();
1.145 albertel 1118: &Apache::lonxml::debug('symb is '.$symb);
1.204 albertel 1119: if ($env{'request.state'} eq "construct") {
1.145 albertel 1120: if ( -e $file ) {
1121: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1122: ['problemmode']);
1.204 albertel 1123: if (!(defined $env{'form.problemmode'})) {
1.145 albertel 1124: #first visit to problem in construction space
1.204 albertel 1125: $env{'form.problemmode'}='View';
1.145 albertel 1126: &renderpage($request,$file);
1.204 albertel 1127: } elsif ($env{'form.problemmode'} eq &mt('EditXML') ||
1128: $env{'form.problemmode'} eq 'EditXML') {
1.145 albertel 1129: &editxmlmode($request,$file);
1.204 albertel 1130: } elsif ($env{'form.problemmode'} eq &mt('Calculate answers')) {
1.145 albertel 1131: &analyze($request,$file);
1132: } else {
1.268 albertel 1133: &update_construct_style();
1.145 albertel 1134: &renderpage($request,$file);
1135: }
1136: } else {
1137: # requested file doesn't exist in contruction space
1138: &newproblem($request);
1139: }
1140: } else {
1141: # just render the page normally outside of construction space
1142: &Apache::lonxml::debug("not construct");
1.52 albertel 1143: &renderpage($request,$file);
1.41 albertel 1144: }
1.145 albertel 1145: #my $td=&tv_interval($t0);
1146: #&Apache::lonxml::debug("Spent $td seconds processing");
1147: # always turn off debug messages
1148: $Apache::lonxml::debug=0;
1.253 albertel 1149: &unset_permissions();
1.145 albertel 1150: return OK;
1.52 albertel 1151:
1.1 albertel 1152: }
1153:
1154: 1;
1155: __END__
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