Annotation of loncom/homework/lonhomework.pm, revision 1.254
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.254 ! albertel 4: # $Id: lonhomework.pm,v 1.253 2006/06/24 01:28:17 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($env{'form.resetdata'})) &&
100: ( !defined($env{'form.newrandomization'}))) {
1.217 albertel 101: return ('grade', 'web');
1.145 albertel 102: } else {
1.217 albertel 103: return ('web');
1.145 albertel 104: }
1.204 albertel 105: } elsif ($env{'request.state'} eq "construct") {
106: if ( defined($env{'form.grade_target'}) ) {
107: return ($env{'form.grade_target'});
1.145 albertel 108: }
1.204 albertel 109: if ( defined($env{'form.preview'})) {
110: if ( defined($env{'form.submitted'})) {
1.145 albertel 111: return ('grade', 'web');
112: } else {
113: return ('web');
114: }
115: } else {
1.204 albertel 116: if ( $env{'form.problemmode'} eq &mt('View') ||
117: $env{'form.problemmode'} eq &mt('Discard Edits and View')) {
118: if ( defined($env{'form.submitted'}) &&
119: (!defined($env{'form.resetdata'})) &&
120: (!defined($env{'form.newrandomization'}))) {
1.145 albertel 121: return ('grade', 'web','answer');
122: } else {
123: return ('web','answer');
124: }
1.204 albertel 125: } elsif ( $env{'form.problemmode'} eq &mt('Edit') ||
126: $env{'form.problemmode'} eq 'Edit') {
127: if ( $env{'form.submitted'} eq 'edit' ) {
128: if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {
1.145 albertel 129: return ('modified','web','answer');
130: } else {
1.211 albertel 131: return ('modified','no_output_web','edit');
1.145 albertel 132: }
133: } else {
1.211 albertel 134: return ('no_output_web','edit');
1.145 albertel 135: }
136: } else {
137: return ('web');
138: }
139: }
1.15 albertel 140: }
1.145 albertel 141: return ();
1.5 albertel 142: }
143:
1.3 albertel 144: sub setup_vars {
1.145 albertel 145: my ($target) = @_;
146: return ';'
1.11 albertel 147: # return ';$external::target='.$target.';';
1.2 albertel 148: }
149:
1.36 albertel 150: sub createmenu {
1.145 albertel 151: my ($which,$request)=@_;
152: if ($which eq 'grade') {
153: $request->print('<script language="JavaScript">
1.91 albertel 154: hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
1.52 albertel 155: "height=350,width=150,menubar=no");
156: </script>');
1.145 albertel 157: }
1.36 albertel 158: }
159:
1.200 albertel 160: sub proctor_checked_in {
1.226 albertel 161: my ($slot_name,$slot,$type)=@_;
162: my @possible_proctors=split(",",$slot->{'proctor'});
163:
1.248 albertel 164: return 1 if (!@possible_proctors);
165:
1.226 albertel 166: my $key;
167: if ($type eq 'Task') {
1.230 albertel 168: my $version=$Apache::lonhomework::history{'resource.0.version'};
169: $key ="resource.$version.0.checkedin";
1.226 albertel 170: } elsif ($type eq 'problem') {
171: $key ='resource.0.checkedin';
172: }
1.249 albertel 173: # backward compatability, used to be username@domain,
174: # now is username:domain
175: my $who = $Apache::lonhomework::history{$key};
176: if ($who !~ /:/) {
177: $who =~ tr/@/:/;
178: }
1.226 albertel 179: foreach my $possible (@possible_proctors) {
1.249 albertel 180: if ($who eq $possible
1.226 albertel 181: && $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
1.202 albertel 182: return 1;
183: }
184: }
1.226 albertel 185:
1.200 albertel 186: return 0;
187: }
188:
1.52 albertel 189: $Apache::lonxml::browse='';
1.152 albertel 190: sub check_ip_acc {
191: my ($acc)=@_;
1.218 albertel 192: &Apache::lonxml::debug("acc is $acc");
193: if (!defined($acc) || $acc =~ /^\s*$/ || $acc =~/^\s*no\s*$/i) {
194: return 1;
195: }
1.152 albertel 196: my $allowed=0;
197: my $ip=$ENV{'REMOTE_ADDR'};
198: my $name;
199: foreach my $pattern (split(',',$acc)) {
1.233 albertel 200: $pattern =~ s/^\s*//;
201: $pattern =~ s/\s*$//;
1.152 albertel 202: if ($pattern =~ /\*$/) {
203: #35.8.*
204: $pattern=~s/\*//;
205: if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
206: } elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) {
207: #35.8.3.[34-56]
208: my $low=$2;
209: my $high=$3;
210: $pattern=$1;
211: if ($ip =~ /^\Q$pattern\E/) {
212: my $last=(split(/\./,$ip))[3];
213: if ($last <=$high && $last >=$low) { $allowed=1; }
214: }
215: } elsif ($pattern =~ /^\*/) {
216: #*.msu.edu
217: $pattern=~s/\*//;
218: if (!defined($name)) {
219: use Socket;
220: my $netaddr=inet_aton($ip);
221: ($name)=gethostbyaddr($netaddr,AF_INET);
1.158 albertel 222: }
1.152 albertel 223: if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
224: } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
225: #127.0.0.1
226: if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
227: } else {
228: #some.name.com
229: if (!defined($name)) {
230: use Socket;
231: my $netaddr=inet_aton($ip);
232: ($name)=gethostbyaddr($netaddr,AF_INET);
233: }
234: if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
235: }
236: if ($allowed) { last; }
237: }
238: return $allowed;
239: }
1.198 albertel 240:
1.226 albertel 241: sub check_slot_access {
242: my ($id,$type)=@_;
243:
1.207 albertel 244: # does it pass normal muster
1.226 albertel 245: my ($status,$datemsg)=&check_access($id);
246:
1.252 albertel 247: my $useslots = &Apache::lonnet::EXT("resource.0.useslots");
1.251 albertel 248: if ($useslots ne 'resource' && $useslots ne 'map'
249: && $useslots ne 'map_map') {
1.226 albertel 250: return ($status,$datemsg);
251: }
252:
1.200 albertel 253: if ($status eq 'SHOW_ANSWER' ||
254: $status eq 'CLOSED' ||
255: $status eq 'INVALID_ACCESS' ||
256: $status eq 'UNAVAILABLE') {
257: return ($status,$datemsg);
258: }
1.204 albertel 259: if ($env{'request.state'} eq "construct") {
1.203 albertel 260: return ($status,$datemsg);
261: }
1.226 albertel 262:
263: if ($type eq 'Task') {
264: my $version=$Apache::lonhomework::history{'resource.version'};
1.230 albertel 265: if ($Apache::lonhomework::history{"resource.$version.0.checkedin"} &&
266: $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') {
1.226 albertel 267: return ('SHOW_ANSWER');
268: }
1.207 albertel 269: }
1.226 albertel 270:
1.210 albertel 271: my @slots=
1.252 albertel 272: (split(':',&Apache::lonnet::EXT("resource.0.availablestudent")),
273: split(':',&Apache::lonnet::EXT("resource.0.available")));
1.210 albertel 274:
1.200 albertel 275: # if (!@slots) {
276: # return ($status,$datemsg);
277: # }
278: my $slotstatus='NOT_IN_A_SLOT';
1.206 albertel 279: my ($returned_slot,$slot_name);
1.210 albertel 280: foreach my $slot (@slots) {
1.241 albertel 281: $slot =~ s/(^\s*|\s*$)//g;
1.201 albertel 282: &Apache::lonxml::debug("getting $slot");
1.200 albertel 283: my %slot=&Apache::lonnet::get_slot($slot);
1.201 albertel 284: &Apache::lonhomework::showhash(%slot);
1.200 albertel 285: if ($slot{'starttime'} < time &&
286: $slot{'endtime'} > time &&
1.201 albertel 287: &check_ip_acc($slot{'ip'})) {
1.202 albertel 288: &Apache::lonxml::debug("$slot is good");
289: $slotstatus='NEEDS_CHECKIN';
290: $returned_slot=\%slot;
1.206 albertel 291: $slot_name=$slot;
1.200 albertel 292: last;
293: }
294: }
1.202 albertel 295: if ($slotstatus eq 'NEEDS_CHECKIN' &&
1.226 albertel 296: &proctor_checked_in($slot_name,$returned_slot,$type)) {
1.202 albertel 297: &Apache::lonxml::debug("protoctor checked in");
1.200 albertel 298: $slotstatus='CAN_ANSWER';
299: }
1.226 albertel 300:
1.235 albertel 301: my ($is_correct,$got_grade,$checkedin);
1.226 albertel 302: if ($type eq 'Task') {
1.230 albertel 303: my $version=$Apache::lonhomework::history{'resource.0.version'};
1.231 albertel 304: $got_grade =
305: ($Apache::lonhomework::history{"resource.$version.0.status"}
306: =~ /^(?:pass|fail)$/);
1.235 albertel 307: $is_correct =
308: ($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass'
309: || $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ );
1.226 albertel 310: $checkedin =
1.230 albertel 311: $Apache::lonhomework::history{"resource.$version.0.checkedin"};
1.226 albertel 312: } elsif ($type eq 'problem') {
1.252 albertel 313: $got_grade = 1;
314: $checkedin = $Apache::lonhomework::history{"resource.0.checkedin"};
315: $is_correct =
316: ($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/);
1.226 albertel 317: }
318:
1.235 albertel 319: &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
320:
1.243 albertel 321: # no slot is currently open, and has been checked in for this version
322: # but hasn't got a grade, therefore must be awaiting a grade
323: if (!defined($slot_name)
324: && $checkedin
1.236 albertel 325: && !$got_grade) {
326: return ('WAITING_FOR_GRADE');
327: }
328:
1.252 albertel 329: # no slot is currently open, and has been checked in for this version
330: # previous slot is therefore CLOSED, so therefore the problem is
331: if (!defined($slot_name)
332: && $checkedin
333: && $type eq 'problem') {
334: return ('CLOSED',$datemsg);
335: }
336:
1.226 albertel 337: if ($slotstatus eq 'NOT_IN_A_SLOT'
338: && $checkedin ) {
339:
1.231 albertel 340: if ($got_grade) {
1.209 albertel 341: return ('SHOW_ANSWER');
342: } else {
343: return ('WAITING_FOR_GRADE');
344: }
1.226 albertel 345:
1.207 albertel 346: }
1.235 albertel 347: if ( $is_correct) {
348: return ('SHOW_ANSWER');
349: }
1.225 albertel 350: if ( $status eq 'CANNOT_ANSWER' &&
351: ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) {
352: return ($status,$datemsg);
353: }
354:
1.206 albertel 355: return ($slotstatus,$datemsg,$slot_name,$returned_slot);
1.198 albertel 356: }
1.200 albertel 357:
1.92 bowersj2 358: # JB, 9/24/2002: Any changes in this function may require a change
359: # in lonnavmaps::resource::getDateStatus.
1.53 www 360: sub check_access {
1.145 albertel 361: my ($id) = @_;
362: my $date ='';
363: my $status;
364: my $datemsg = '';
365: my $lastdate = '';
366: my $type;
367: my $passed;
368:
1.204 albertel 369: if ($env{'request.state'} eq "construct") {
370: if ($env{'form.problemstate'}) {
371: if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
372: if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' &&
1.167 albertel 373: lc($Apache::lonhomework::problemstatus) eq 'no')) {
1.168 albertel 374: return ('CANNOT_ANSWER',
1.174 www 375: &mt('is in this state due to author settings.'));
1.167 albertel 376: }
1.165 albertel 377: } else {
1.204 albertel 378: return ($env{'form.problemstate'},
1.174 www 379: &mt('is in this state due to author settings.'));
1.165 albertel 380: }
381: }
1.145 albertel 382: &Apache::lonxml::debug("in construction ignoring dates");
383: $status='CAN_ANSWER';
1.146 albertel 384: $datemsg=&mt('is in under construction');
1.163 albertel 385: # return ($status,$datemsg);
1.145 albertel 386: }
387:
388: &Apache::lonxml::debug("checking for part :$id:");
389: &Apache::lonxml::debug("time:".time);
1.152 albertel 390:
1.212 albertel 391: my ($symb)=&Apache::lonxml::whichuser();
392: &Apache::lonxml::debug("symb:".$symb);
393: #if ($env{'request.state'} ne "construct" && $symb ne '') {
1.204 albertel 394: if ($env{'request.state'} ne "construct") {
1.163 albertel 395: my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));
396: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
397: $status='INVALID_ACCESS';
398: $date=&mt("can not be accessed from your location.");
1.145 albertel 399: return($status,$date);
400: }
1.163 albertel 401:
1.226 albertel 402: foreach my $temp ("opendate","duedate","answerdate") {
1.163 albertel 403: $lastdate = $date;
1.247 albertel 404: if ($temp eq 'duedate') {
405: $date = &due_date($id);
406: } else {
407: $date = &Apache::lonnet::EXT("resource.$id.$temp");
408: }
409:
1.163 albertel 410: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
411: if ($thistype =~ /^(con_lost|no_such_host)/ ||
412: $date =~ /^(con_lost|no_such_host)/) {
413: $status='UNAVAILABLE';
414: $date=&mt("may open later.");
415: return($status,$date);
416: }
417: if ($thistype eq 'date_interval') {
418: if ($temp eq 'opendate') {
419: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
420: }
421: if ($temp eq 'answerdate') {
422: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
423: }
1.145 albertel 424: }
1.163 albertel 425: &Apache::lonxml::debug("found :$date: for :$temp:");
426: if ($date eq '') {
427: $date = &mt("an unknown date"); $passed = 0;
428: } elsif ($date eq 'con_lost') {
429: $date = &mt("an indeterminate date"); $passed = 0;
430: } else {
431: if (time < $date) { $passed = 0; } else { $passed = 1; }
432: $date = localtime $date;
1.145 albertel 433: }
1.163 albertel 434: if (!$passed) { $type=$temp; last; }
1.145 albertel 435: }
1.163 albertel 436: &Apache::lonxml::debug("have :$type:$passed:");
437: if ($passed) {
438: $status='SHOW_ANSWER';
439: $datemsg=$date;
440: } elsif ($type eq 'opendate') {
441: $status='CLOSED';
442: $datemsg = &mt("will open on")." $date";
443: } elsif ($type eq 'duedate') {
444: $status='CAN_ANSWER';
445: $datemsg = &mt("is due at")." $date";
446: } elsif ($type eq 'answerdate') {
447: $status='CLOSED';
448: $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
1.145 albertel 449: }
450: }
1.212 albertel 451: if ($status eq 'CAN_ANSWER' ||
452: (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
1.145 albertel 453: #check #tries, and if correct.
454: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
455: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
456: if ( $tries eq '' ) { $tries = '0'; }
1.164 albertel 457: if ( $maxtries eq '' &&
1.204 albertel 458: $env{'request.state'} ne 'construct') { $maxtries = '2'; }
1.164 albertel 459: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
1.145 albertel 460: # if (correct and show prob status) or excused then CANNOT_ANSWER
461: if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
462: &&
463: lc($Apache::lonhomework::problemstatus) ne 'no')
464: ||
465: $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
466: $status = 'CANNOT_ANSWER';
467: }
1.121 albertel 468: }
1.181 albertel 469: if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
1.177 albertel 470: my $interval=&Apache::lonnet::EXT("resource.$id.interval");
471: &Apache::lonxml::debug("looking for interval $interval");
472: if ($interval) {
473: my $first_access=&Apache::lonnet::get_first_access('map');
474: &Apache::lonxml::debug("looking for accesstime $first_access");
475: if (!$first_access) {
476: $status='NOT_YET_VIEWED';
1.247 albertel 477: my $due_date = &due_date($id);
478: $datemsg=&seconds_to_human_length($due_date-time);
1.177 albertel 479: }
480: }
481: }
1.247 albertel 482:
1.133 albertel 483: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
484: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
485: # return ('UNCHECKEDOUT','needs to be checked out');
486: #}
1.54 www 487:
488:
1.145 albertel 489: &Apache::lonxml::debug("sending back :$status:$datemsg:");
490: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
491: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
492: $status='CAN_ANSWER';
1.146 albertel 493: $datemsg=&mt('is closed but you are allowed to view it');
1.145 albertel 494: }
1.106 albertel 495:
1.145 albertel 496: return ($status,$datemsg);
1.20 albertel 497: }
1.247 albertel 498: # this should work exactly like the copy in lonnavmaps.pm
1.246 albertel 499: sub due_date {
1.250 albertel 500: my ($part_id,$symb,$udom,$uname)=@_;
1.246 albertel 501: my $date;
1.250 albertel 502: my $interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
503: $udom,$uname);
1.247 albertel 504: &Apache::lonxml::debug("looking for interval $part_id $symb $interval");
1.250 albertel 505: my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
506: $udom,$uname);
1.247 albertel 507: &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
508: if (defined($interval)) {
1.246 albertel 509: my $first_access=&Apache::lonnet::get_first_access('map',$symb);
1.247 albertel 510: if (defined($first_access)) {
511: $interval = $first_access+$interval;
512: $date = ($interval < $due_date)? $interval : $due_date;
513: } else {
514: $date = $due_date;
515: }
516: } else {
517: $date = $due_date;
1.246 albertel 518: }
519: return $date
520: }
521:
1.192 albertel 522: sub seconds_to_human_length {
523: my ($length)=@_;
524:
525: my $seconds=$length%60; $length=int($length/60);
526: my $minutes=$length%60; $length=int($length/60);
527: my $hours=$length%24; $length=int($length/24);
528: my $days=$length;
529:
530: my $timestr;
531: if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
532: if ($hours > 0) { $timestr.=($timestr?", ":"").
533: &mt('[quant,_1,hour]',$hours); }
534: if ($minutes > 0) { $timestr.=($timestr?", ":"").
535: &mt('[quant,_1,minute]',$minutes); }
536: if ($seconds > 0) { $timestr.=($timestr?", ":"").
537: &mt('[quant,_1,second]',$seconds); }
538: return $timestr;
539: }
540:
1.41 albertel 541: sub showhash {
1.145 albertel 542: my (%hash) = @_;
543: &showhashsubset(\%hash,'.');
544: return '';
1.79 albertel 545: }
546:
1.106 albertel 547: sub showarray {
548: my ($array)=@_;
549: my $string="(";
550: foreach my $elm (@{ $array }) {
1.193 albertel 551: if (ref($elm) eq 'ARRAY') {
552: $string.=&showarray($elm);
553: } elsif (ref($elm) eq 'HASH') {
554: $string.= "HASH --- \n<br />";
555: $string.= &showhashsubset($elm,'.');
1.106 albertel 556: } else {
557: $string.="$elm,"
558: }
559: }
560: chop($string);
561: $string.=")";
562: return $string;
563: }
564:
1.79 albertel 565: sub showhashsubset {
1.145 albertel 566: my ($hash,$keyre) = @_;
567: my $resultkey;
568: foreach $resultkey (sort keys %$hash) {
1.193 albertel 569: if ($resultkey !~ /$keyre/) { next; }
570: if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
571: &Apache::lonxml::debug("$resultkey ---- ".
572: &showarray($$hash{$resultkey}));
573: } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
574: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
575: &showhashsubset($$hash{$resultkey},'.');
576: } else {
577: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.145 albertel 578: }
579: }
580: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
581: return '';
1.41 albertel 582: }
583:
584: sub setuppermissions {
1.204 albertel 585: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
586: my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1.145 albertel 587: if (! $viewgrades &&
1.204 albertel 588: exists($env{'request.course.sec'}) &&
589: $env{'request.course.sec'} !~ /^\s*$/) {
590: $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
591: '/'.$env{'request.course.sec'});
1.145 albertel 592: }
1.244 albertel 593: $Apache::lonhomework::viewgrades = $viewgrades;
594:
1.185 albertel 595: if ($Apache::lonhomework::browse eq 'F' &&
1.204 albertel 596: $env{'form.devalidatecourseresdata'} eq 'on') {
1.185 albertel 597: my (undef,$courseid) = &Apache::lonxml::whichuser();
1.204 albertel 598: &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
599: $env{"course.$courseid.domain"});
1.185 albertel 600: }
1.244 albertel 601:
1.205 albertel 602: my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
603: if (! $modifygrades &&
604: exists($env{'request.course.sec'}) &&
605: $env{'request.course.sec'} !~ /^\s*$/) {
606: $modifygrades =
607: &Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
608: '/'.$env{'request.course.sec'});
609: }
610: $Apache::lonhomework::modifygrades = $modifygrades;
1.244 albertel 611:
612: my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'});
613: if (! $queuegrade &&
614: exists($env{'request.course.sec'}) &&
615: $env{'request.course.sec'} !~ /^\s*$/) {
616: $queuegrade =
617: &Apache::lonnet::allowed('qgr',$env{'request.course.id'}.
618: '/'.$env{'request.course.sec'});
619: }
620: $Apache::lonhomework::queuegrade = $queuegrade;
1.205 albertel 621: return '';
1.41 albertel 622: }
623:
1.253 albertel 624: sub unset_permissions {
625: undef($Apache::lonhomework::queuegrade);
626: undef($Apache::lonhomework::modifygrades);
627: undef($Apache::lonhomework::viewgrades);
628: undef($Apache::lonhomework::browse);
629: }
630:
1.41 albertel 631: sub setupheader {
1.120 albertel 632: my $request=$_[0];
1.197 albertel 633: &Apache::loncommon::content_type($request,'text/html');
1.120 albertel 634: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
635: &Apache::loncommon::no_cache($request);
636: }
1.196 albertel 637: # $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
638: # 'lastrevisiondate'));
1.120 albertel 639: $request->send_http_header;
640: return OK if $request->header_only;
641: return ''
1.41 albertel 642: }
1.35 albertel 643:
1.47 albertel 644: sub handle_save_or_undo {
1.145 albertel 645: my ($request,$problem,$result) = @_;
646: my $file = &Apache::lonnet::filelocation("",$request->uri);
647: my $filebak =$file.".bak";
648: my $filetmp =$file.".tmp";
649: my $error=0;
1.156 albertel 650:
651: &Apache::lonnet::correct_line_ends($result);
1.52 albertel 652:
1.204 albertel 653: if ($env{'form.Undo'} eq &mt('undo')) {
1.145 albertel 654: my $error=0;
655: if (!copy($file,$filetmp)) { $error=1; }
656: if ((!$error) && (!copy($filebak,$file))) { $error=1; }
657: if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
658: if (!$error) {
1.171 albertel 659: &Apache::lonxml::info("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");
1.145 albertel 660: } else {
1.171 albertel 661: &Apache::lonxml::info("<p><font color=\"red\" size=\"+1\"><b>".&mt("Unable to undo, unable to switch")." $filebak ".&mt("and")." $file</b></font></p>");
1.145 albertel 662: $error=1;
663: }
1.52 albertel 664: } else {
1.145 albertel 665: my $fs=Apache::File->new(">$filebak");
666: if (defined($fs)) {
667: print $fs $$problem;
1.171 albertel 668: &Apache::lonxml::info("<b>".&mt("Making Backup to").
669: " $filebak</b>");
1.145 albertel 670: } else {
1.171 albertel 671: &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");
1.145 albertel 672: $error=2;
673: }
674: my $fh=Apache::File->new(">$file");
675: if (defined($fh)) {
676: print $fh $$result;
1.171 albertel 677: &Apache::lonxml::info("<b>".&mt("Saving Modifications to").
678: " $file</b>");
1.145 albertel 679: } else {
1.171 albertel 680: &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".
681: &mt("Unable to write to")." $file</b></font>");
1.145 albertel 682: $error|=4;
683: }
1.52 albertel 684: }
1.145 albertel 685: return $error;
1.64 albertel 686: }
687:
1.101 albertel 688: sub analyze_header {
689: my ($request) = @_;
1.238 albertel 690: my $result =
1.240 albertel 691: &Apache::loncommon::start_page('Analyzing a problem',undef);
692:
1.238 albertel 693: $result .=
694: &Apache::lonxml::message_location().'
1.101 albertel 695: <form name="lonhomework" method="POST" action="'.
1.204 albertel 696: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.179 albertel 697: &Apache::structuretags::remember_problem_state().'
1.146 albertel 698: <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
699: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.101 albertel 700: <hr />
1.146 albertel 701: <input type="submit" name="submit" value="'.&mt("View").'" />
1.101 albertel 702: <hr />
703: </form>';
1.171 albertel 704: &Apache::lonxml::add_messages(\$result);
1.101 albertel 705: $request->print($result);
706: $request->rflush();
707: }
708:
1.109 albertel 709: sub analyze_footer {
710: my ($request) = @_;
1.237 albertel 711: $request->print(&Apache::loncommon::end_page());
1.109 albertel 712: $request->rflush();
713: }
714:
1.74 albertel 715: sub analyze {
1.101 albertel 716: my ($request,$file) = @_;
717: &Apache::lonxml::debug("Analyze");
718: my $result;
719: my %overall;
1.219 www 720: my %seedexample;
1.101 albertel 721: my %allparts;
1.204 albertel 722: my $rndseed=$env{'form.rndseed'};
1.101 albertel 723: &analyze_header($request);
1.114 albertel 724: my %prog_state=
1.146 albertel 725: &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
726: &mt('Getting Problem Variants'),
1.204 albertel 727: $env{'form.numtoanalyze'},
1.175 albertel 728: 'inline',undef);
1.204 albertel 729: for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
1.114 albertel 730: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
1.146 albertel 731: &mt('last problem'));
1.182 albertel 732: if (&Apache::loncommon::connection_aborted($request)) { return; }
1.219 www 733: my $thisseed=$i+$rndseed;
1.101 albertel 734: my $subresult=&Apache::lonnet::ssi($request->uri,
735: ('grade_target' => 'analyze'),
1.219 www 736: ('rndseed' => $thisseed));
1.101 albertel 737: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
738: my %analyze=&Apache::lonnet::str2hash($subresult);
1.114 albertel 739: my @parts;
740: if (defined(@{ $analyze{'parts'} })) {
741: @parts=@{ $analyze{'parts'} };
742: }
1.101 albertel 743: foreach my $part (@parts) {
744: if (!exists($allparts{$part})) {$allparts{$part}=1;};
1.109 albertel 745: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
746: $analyze{$part.'.type'} eq 'stringresponse' ||
747: $analyze{$part.'.type'} eq 'formularesponse' ) {
1.219 www 748: my $concatanswer=join("\0",@{ $analyze{$part.'.answer'} });
749: if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
750: @{$analyze{$part.'.answer'}}=('<font color="red">'.&mt('Error').'</font>');
751: }
1.101 albertel 752: push( @{ $overall{$part.'.answer'} },
753: [@{ $analyze{$part.'.answer'} }]);
1.219 www 754: $seedexample{join("\0",@{ $analyze{$part.'.answer'}})}=$thisseed;
1.101 albertel 755: }
756: }
757: }
1.114 albertel 758: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
1.146 albertel 759: &mt('Analyzing Results'));
1.175 albertel 760: $request->print('<hr />'.&mt('List of possible answers').': ');
1.134 albertel 761: foreach my $part (sort(keys(%allparts))) {
1.109 albertel 762: if (defined(@{ $overall{$part.'.answer'} })) {
1.132 albertel 763: my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] });
1.221 albertel 764: $request->print('<table class="thinborder"><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</th></tr>');
1.130 albertel 765: my %frequency;
1.109 albertel 766: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
1.132 albertel 767: $frequency{join("\0",@{ $answer })}++;
1.130 albertel 768: }
1.219 www 769: $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'<br />('
770: .&mt('click for example').')</th></tr>');
1.132 albertel 771: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
1.220 albertel 772: $request->print('<tr><td class="center">'.
773: join('</td><td class="center">',split("\0",$answer)).
774: '</td><td class="center"><a href="'.$request->uri.'?rndseed='.$seedexample{$answer}.'">'.$frequency{$answer}.
1.219 www 775: '</a></td></tr>');
1.109 albertel 776: }
777: $request->print('</table>');
778: } else {
1.162 albertel 779: $request->print('<p>'.&mt('Response').' '.$part.' '.
1.146 albertel 780: &mt('is not analyzable at this time').'</p>');
1.101 albertel 781: }
782: }
1.130 albertel 783: if (scalar(keys(%allparts)) == 0 ) {
1.215 raeburn 784: $request->print('<p>'.&mt('Found no analyzable responses in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
1.130 albertel 785: }
1.114 albertel 786: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1.109 albertel 787: &analyze_footer($request);
1.101 albertel 788: &Apache::lonhomework::showhash(%overall);
789: return $result;
1.74 albertel 790: }
791:
1.64 albertel 792: sub editxmlmode {
1.145 albertel 793: my ($request,$file) = @_;
794: my $result;
795: my $problem=&Apache::lonnet::getfile($file);
796: if ($problem eq -1) {
1.146 albertel 797: &Apache::lonxml::error("<b> ".&mt('Unable to find').
798: " <i>$file</i></b>");
1.145 albertel 799: $problem='';
800: }
1.204 albertel 801: if (defined($env{'form.editxmltext'}) || defined($env{'form.Undo'})) {
1.145 albertel 802: my $error=&handle_save_or_undo($request,\$problem,
1.204 albertel 803: \$env{'form.editxmltext'});
1.145 albertel 804: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
805: }
1.204 albertel 806: &Apache::lonhomework::showhashsubset(\%env,'^form');
807: if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {
808: &Apache::lonhomework::showhashsubset(\%env,'^form');
809: $env{'form.problemmode'}='View';
1.145 albertel 810: &renderpage($request,$file);
811: } else {
812: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1.160 www 813: my $xml_help = '<table><tr><td>'.
814: &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
815: "Problem Editing Help").
816: '</td><td>'.
1.254 ! albertel 817: &Apache::loncommon::help_open_menu(undef,undef,5,'Authoring').
1.178 albertel 818: '</td></tr></table>';
1.145 albertel 819: if ($cols > 80) { $cols = 80; }
820: if ($cols < 70) { $cols = 70; }
821: if ($rows < 20) { $rows = 20; }
1.238 albertel 822: my $start_page =
823: &Apache::loncommon::start_page("EditXML $file",
1.240 albertel 824: &Apache::edit::js_change_detection());
1.227 albertel 825:
1.238 albertel 826: $result.=$start_page.
1.213 albertel 827: &renderpage($request,$file,['no_output_web'],1).
828: &Apache::lonxml::message_location().'
1.227 albertel 829: <form '.&Apache::edit::form_change_detection().' name="lonhomework" method="POST" action="'.
1.204 albertel 830: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.179 albertel 831: &Apache::structuretags::remember_problem_state().'
1.146 albertel 832: <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
1.170 matthew 833: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
1.232 albertel 834: <input type="submit" '.&Apache::edit::submit_ask_anyway().'name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
1.228 albertel 835: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
1.64 albertel 836: <hr />
1.170 matthew 837: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
838: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
1.64 albertel 839: <hr />
1.110 albertel 840: ' . $xml_help . '
1.227 albertel 841: <textarea '.&Apache::edit::element_change_detection().' style="width:100%" rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
1.229 albertel 842: &HTML::Entities::encode($problem,'<>&"').'</textarea><br />
843: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
844: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
1.238 albertel 845: </form>'.&Apache::loncommon::end_page();
1.171 albertel 846: &Apache::lonxml::add_messages(\$result);
1.145 albertel 847: $request->print($result);
848: }
849: return '';
1.47 albertel 850: }
1.189 albertel 851:
1.188 foxr 852: #
853: # Render the page in whatever target desired.
854: #
1.41 albertel 855: sub renderpage {
1.213 albertel 856: my ($request,$file,$targets,$return_string) = @_;
1.52 albertel 857:
1.211 albertel 858: my @targets = @{$targets || [&get_target()]};
1.204 albertel 859: &Apache::lonhomework::showhashsubset(\%env,'form.');
1.145 albertel 860: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1.171 albertel 861: my $overall_result;
1.145 albertel 862: foreach my $target (@targets) {
1.183 albertel 863: # FIXME need to do something intelligent when a problem goes
864: # from viewable to not viewable due to map conditions
865: #&setuppermissions();
866: #if ( $Apache::lonhomework::browse ne '2'
867: # && $Apache::lonhomework::browse ne 'F' ) {
868: # $request->print(" You most likely shouldn't see me.");
869: #}
1.145 albertel 870: #my $t0 = [&gettimeofday()];
1.211 albertel 871: my $output=1;
872: if ($target eq 'no_output_web') {
873: $target = 'web'; $output=0;
874: }
1.145 albertel 875: my $problem=&Apache::lonnet::getfile($file);
1.222 albertel 876: my $result;
1.145 albertel 877: if ($problem eq -1) {
1.222 albertel 878: my $filename=(split('/',$file))[-1];
879: $result.="<b> ".&mt('Unable to find')." <i>$filename</i></b>";
1.145 albertel 880: $problem='';
881: }
1.52 albertel 882:
1.145 albertel 883: my %mystyle;
884: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
885: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
1.204 albertel 886: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
1.145 albertel 887:
888: &Apache::lonxml::debug("Should be parsing now");
1.222 albertel 889: $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
890: &setup_vars($target),%mystyle);
1.145 albertel 891: undef($Apache::lonhomework::parsing_a_problem);
1.214 albertel 892: if (!$output) { $result = ''; }
1.145 albertel 893: #$request->print("Result follows:");
894: if ($target eq 'modified') {
895: &handle_save_or_undo($request,\$problem,\$result);
896: } else {
897: if ($target eq 'analyze') {
898: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
899: undef(%Apache::lonhomework::analyze);
900: }
901: #my $td=&tv_interval($t0);
902: #if ( $Apache::lonxml::debug) {
903: #$result =~ s:</body>::;
904: #$result.="<br />Spent $td seconds processing target $target\n</body>";
905: #}
1.171 albertel 906: # $request->print($result);
907: $overall_result.=$result;
908: # $request->rflush();
1.145 albertel 909: }
910: #$request->print(":Result ends");
911: #my $td=&tv_interval($t0);
1.52 albertel 912: }
1.213 albertel 913: if (!$return_string) {
914: &Apache::lonxml::add_messages(\$overall_result);
915: $request->print($overall_result);
916: $request->rflush();
917: } else {
918: return $overall_result;
919: }
1.41 albertel 920: }
921:
1.42 albertel 922: # with no arg it returns a HTML <option> list of the template titles
923: # with one arg it returns the filename associated with the arg passed
924: sub get_template_list {
1.145 albertel 925: my ($namewanted,$extension) = @_;
926: my $result;
927: my @allnames;
928: &Apache::lonxml::debug("Looking for :$extension:");
929: foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
930: my $name=&Apache::lonnet::metadata($file,'title');
931: if ($namewanted && ($name eq $namewanted)) {
932: $result=$file;
933: last;
934: } else {
935: if ($name) { push (@allnames, $name); }
936: }
937: }
938: if (@allnames && !$result) {
1.146 albertel 939: $result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".
1.145 albertel 940: join('</option><option>',sort(@allnames)).'</option>';
1.42 albertel 941: }
1.145 albertel 942: return $result;
1.42 albertel 943: }
944:
945: sub newproblem {
1.65 matthew 946: my ($request) = @_;
947: my $extension=$request->uri;
948: $extension=~s:^.*\.([\w]+)$:$1:;
949: &Apache::lonxml::debug("Looking for :$extension:");
1.131 albertel 950: my $templatelist=&get_template_list('',$extension);
1.204 albertel 951: if ($env{'form.template'} &&
952: $env{'form.template'} ne "Select a $extension template") {
1.65 matthew 953: use File::Copy;
1.204 albertel 954: my $file = &get_template_list($env{'form.template'},$extension);
1.65 matthew 955: my $dest = &Apache::lonnet::filelocation("",$request->uri);
956: copy($file,$dest);
957: &renderpage($request,$dest);
1.204 albertel 958: } elsif($env{'form.newfile'} && !$templatelist) {
1.131 albertel 959: # I don't like hard-coded filenames but for now, this will work.
960: use File::Copy;
961: my $templatefilename =
962: $request->dir_config('lonIncludes').'/templates/blank.problem';
963: &Apache::lonxml::debug("$templatefilename");
964: my $dest = &Apache::lonnet::filelocation("",$request->uri);
965: copy($templatefilename,$dest);
966: &renderpage($request,$dest);
1.85 albertel 967: } else {
1.176 albertel 968: my $url=&HTML::Entities::encode($request->uri,'<>&"');
969: my $shownurl=$url;
1.157 albertel 970: $shownurl=~s-^/~-/priv/-;
1.65 matthew 971: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.128 albertel 972: my $errormsg;
1.204 albertel 973: if ($env{'form.newfile'}) {
1.146 albertel 974: $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";
1.128 albertel 975: }
1.85 albertel 976: my $instructions;
1.240 albertel 977: my $start_page =
978: &Apache::loncommon::start_page("Create New $extension");
1.146 albertel 979: if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}
1.147 albertel 980: my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',
1.146 albertel 981: 'resource' => 'resource',
982: 'requested' => 'The requested file',
983: 'not exist' => 'currently does not exist',
984: 'createnew' => 'To create a new',
985: 'click' => 'click on the',
986: 'Create' => 'Create',
987: 'button' => 'button');
1.65 matthew 988: $request->print(<<ENDNEWPROBLEM);
1.240 albertel 989: $start_page
1.148 albertel 990: <h1>$lt{'create'} $extension $lt{'resource'}</h1>
1.128 albertel 991: $errormsg
1.157 albertel 992: $lt{'requested'} <tt>$shownurl</tt> $lt{'not exist'}.
1.105 www 993: <p>
1.146 albertel 994: <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>
1.105 www 995: </p>
996: <p><form action="$url" method="POST">
1.42 albertel 997: ENDNEWPROBLEM
1.85 albertel 998: if (defined($templatelist)) {
999: $request->print("<select name=\"template\">$templatelist</select>");
1000: }
1.146 albertel 1001: $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />");
1.238 albertel 1002: $request->print("</form></p>".&Apache::loncommon::end_page());
1.65 matthew 1003: }
1004: return '';
1.42 albertel 1005: }
1006:
1.41 albertel 1007: sub handler {
1.145 albertel 1008: #my $t0 = [&gettimeofday()];
1009: my $request=$_[0];
1.223 albertel 1010: $Apache::lonxml::request=$request;
1.204 albertel 1011: $Apache::lonxml::debug=$env{'user.debug'};
1012: $env{'request.uri'}=$request->uri;
1.180 albertel 1013: &setuppermissions();
1.145 albertel 1014: # some times multiple problemmodes are submitted, need to select
1015: # the last one
1.204 albertel 1016: if ( defined($env{'form.problemmode'}) && ref($env{'form.problemmode'}) ) {
1017: my $mode=$env{'form.problemmode'}->[-1];
1018: undef $env{'form.problemmode'};
1019: $env{'form.problemmode'}=$mode;
1.145 albertel 1020: }
1.193 albertel 1021:
1.145 albertel 1022: my $file=&Apache::lonnet::filelocation("",$request->uri);
1023:
1024: #check if we know where we are
1.204 albertel 1025: if ($env{'request.course.fn'} && !&Apache::lonnet::symbread()) {
1.145 albertel 1026: # if we are browsing we might not be able to know where we are
1.173 albertel 1027: if ($Apache::lonhomework::browse ne 'F' &&
1.204 albertel 1028: $env{'request.state'} ne "construct") {
1.145 albertel 1029: #should know where we are, so ask
1.253 albertel 1030: &unset_permissions();
1031: $request->internal_redirect('/adm/ambiguous');
1032: return OK;
1.145 albertel 1033: }
1034: }
1.253 albertel 1035: if (&setupheader($request)) {
1036: &unset_permissions();
1037: return OK;
1038: }
1.244 albertel 1039: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
1.204 albertel 1040: &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
1.145 albertel 1041: my ($symb) = &Apache::lonxml::whichuser();
1042: &Apache::lonxml::debug('symb is '.$symb);
1.204 albertel 1043: if ($env{'request.state'} eq "construct") {
1.145 albertel 1044: if ( -e $file ) {
1045: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1046: ['problemmode']);
1.204 albertel 1047: if (!(defined $env{'form.problemmode'})) {
1.145 albertel 1048: #first visit to problem in construction space
1.204 albertel 1049: $env{'form.problemmode'}='View';
1.145 albertel 1050: &renderpage($request,$file);
1.204 albertel 1051: } elsif ($env{'form.problemmode'} eq &mt('EditXML') ||
1052: $env{'form.problemmode'} eq 'EditXML') {
1.145 albertel 1053: &editxmlmode($request,$file);
1.204 albertel 1054: } elsif ($env{'form.problemmode'} eq &mt('Calculate answers')) {
1.145 albertel 1055: &analyze($request,$file);
1056: } else {
1057: &renderpage($request,$file);
1058: }
1059: } else {
1060: # requested file doesn't exist in contruction space
1061: &newproblem($request);
1062: }
1063: } else {
1064: # just render the page normally outside of construction space
1065: &Apache::lonxml::debug("not construct");
1.52 albertel 1066: &renderpage($request,$file);
1.41 albertel 1067: }
1.145 albertel 1068: #my $td=&tv_interval($t0);
1069: #&Apache::lonxml::debug("Spent $td seconds processing");
1070: # always turn off debug messages
1071: $Apache::lonxml::debug=0;
1.253 albertel 1072: &unset_permissions();
1.145 albertel 1073: return OK;
1.52 albertel 1074:
1.1 albertel 1075: }
1076:
1077: 1;
1078: __END__
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