Annotation of loncom/homework/lonhomework.pm, revision 1.251
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.251 ! albertel 4: # $Id: lonhomework.pm,v 1.250 2006/06/12 18:45:35 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:
247: my $useslots = &Apache::lonnet::EXT("resource.$id.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=
272: (split(':',&Apache::lonnet::EXT("resource.$id.availablestudent")),
273: split(':',&Apache::lonnet::EXT("resource.$id.available")));
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') {
1.231 albertel 313: $got_grade = 1;
1.226 albertel 314: $checkedin = $Apache::lonhomework::history{"resource.0.checkedin"};
315: }
316:
1.235 albertel 317: &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
318:
1.243 albertel 319: # no slot is currently open, and has been checked in for this version
320: # but hasn't got a grade, therefore must be awaiting a grade
321: if (!defined($slot_name)
322: && $checkedin
1.236 albertel 323: && !$got_grade) {
324: return ('WAITING_FOR_GRADE');
325: }
326:
1.226 albertel 327: if ($slotstatus eq 'NOT_IN_A_SLOT'
328: && $checkedin ) {
329:
1.231 albertel 330: if ($got_grade) {
1.209 albertel 331: return ('SHOW_ANSWER');
332: } else {
333: return ('WAITING_FOR_GRADE');
334: }
1.226 albertel 335:
1.207 albertel 336: }
1.235 albertel 337: if ( $is_correct) {
338: return ('SHOW_ANSWER');
339: }
1.225 albertel 340: if ( $status eq 'CANNOT_ANSWER' &&
341: ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) {
342: return ($status,$datemsg);
343: }
344:
1.206 albertel 345: return ($slotstatus,$datemsg,$slot_name,$returned_slot);
1.198 albertel 346: }
1.200 albertel 347:
1.92 bowersj2 348: # JB, 9/24/2002: Any changes in this function may require a change
349: # in lonnavmaps::resource::getDateStatus.
1.53 www 350: sub check_access {
1.145 albertel 351: my ($id) = @_;
352: my $date ='';
353: my $status;
354: my $datemsg = '';
355: my $lastdate = '';
356: my $type;
357: my $passed;
358:
1.204 albertel 359: if ($env{'request.state'} eq "construct") {
360: if ($env{'form.problemstate'}) {
361: if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
362: if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' &&
1.167 albertel 363: lc($Apache::lonhomework::problemstatus) eq 'no')) {
1.168 albertel 364: return ('CANNOT_ANSWER',
1.174 www 365: &mt('is in this state due to author settings.'));
1.167 albertel 366: }
1.165 albertel 367: } else {
1.204 albertel 368: return ($env{'form.problemstate'},
1.174 www 369: &mt('is in this state due to author settings.'));
1.165 albertel 370: }
371: }
1.145 albertel 372: &Apache::lonxml::debug("in construction ignoring dates");
373: $status='CAN_ANSWER';
1.146 albertel 374: $datemsg=&mt('is in under construction');
1.163 albertel 375: # return ($status,$datemsg);
1.145 albertel 376: }
377:
378: &Apache::lonxml::debug("checking for part :$id:");
379: &Apache::lonxml::debug("time:".time);
1.152 albertel 380:
1.212 albertel 381: my ($symb)=&Apache::lonxml::whichuser();
382: &Apache::lonxml::debug("symb:".$symb);
383: #if ($env{'request.state'} ne "construct" && $symb ne '') {
1.204 albertel 384: if ($env{'request.state'} ne "construct") {
1.163 albertel 385: my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));
386: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
387: $status='INVALID_ACCESS';
388: $date=&mt("can not be accessed from your location.");
1.145 albertel 389: return($status,$date);
390: }
1.163 albertel 391:
1.226 albertel 392: foreach my $temp ("opendate","duedate","answerdate") {
1.163 albertel 393: $lastdate = $date;
1.247 albertel 394: if ($temp eq 'duedate') {
395: $date = &due_date($id);
396: } else {
397: $date = &Apache::lonnet::EXT("resource.$id.$temp");
398: }
399:
1.163 albertel 400: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
401: if ($thistype =~ /^(con_lost|no_such_host)/ ||
402: $date =~ /^(con_lost|no_such_host)/) {
403: $status='UNAVAILABLE';
404: $date=&mt("may open later.");
405: return($status,$date);
406: }
407: if ($thistype eq 'date_interval') {
408: if ($temp eq 'opendate') {
409: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
410: }
411: if ($temp eq 'answerdate') {
412: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
413: }
1.145 albertel 414: }
1.163 albertel 415: &Apache::lonxml::debug("found :$date: for :$temp:");
416: if ($date eq '') {
417: $date = &mt("an unknown date"); $passed = 0;
418: } elsif ($date eq 'con_lost') {
419: $date = &mt("an indeterminate date"); $passed = 0;
420: } else {
421: if (time < $date) { $passed = 0; } else { $passed = 1; }
422: $date = localtime $date;
1.145 albertel 423: }
1.163 albertel 424: if (!$passed) { $type=$temp; last; }
1.145 albertel 425: }
1.163 albertel 426: &Apache::lonxml::debug("have :$type:$passed:");
427: if ($passed) {
428: $status='SHOW_ANSWER';
429: $datemsg=$date;
430: } elsif ($type eq 'opendate') {
431: $status='CLOSED';
432: $datemsg = &mt("will open on")." $date";
433: } elsif ($type eq 'duedate') {
434: $status='CAN_ANSWER';
435: $datemsg = &mt("is due at")." $date";
436: } elsif ($type eq 'answerdate') {
437: $status='CLOSED';
438: $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
1.145 albertel 439: }
440: }
1.212 albertel 441: if ($status eq 'CAN_ANSWER' ||
442: (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
1.145 albertel 443: #check #tries, and if correct.
444: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
445: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
446: if ( $tries eq '' ) { $tries = '0'; }
1.164 albertel 447: if ( $maxtries eq '' &&
1.204 albertel 448: $env{'request.state'} ne 'construct') { $maxtries = '2'; }
1.164 albertel 449: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
1.145 albertel 450: # if (correct and show prob status) or excused then CANNOT_ANSWER
451: if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
452: &&
453: lc($Apache::lonhomework::problemstatus) ne 'no')
454: ||
455: $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
456: $status = 'CANNOT_ANSWER';
457: }
1.121 albertel 458: }
1.181 albertel 459: if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
1.177 albertel 460: my $interval=&Apache::lonnet::EXT("resource.$id.interval");
461: &Apache::lonxml::debug("looking for interval $interval");
462: if ($interval) {
463: my $first_access=&Apache::lonnet::get_first_access('map');
464: &Apache::lonxml::debug("looking for accesstime $first_access");
465: if (!$first_access) {
466: $status='NOT_YET_VIEWED';
1.247 albertel 467: my $due_date = &due_date($id);
468: $datemsg=&seconds_to_human_length($due_date-time);
1.177 albertel 469: }
470: }
471: }
1.247 albertel 472:
1.133 albertel 473: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
474: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
475: # return ('UNCHECKEDOUT','needs to be checked out');
476: #}
1.54 www 477:
478:
1.145 albertel 479: &Apache::lonxml::debug("sending back :$status:$datemsg:");
480: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
481: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
482: $status='CAN_ANSWER';
1.146 albertel 483: $datemsg=&mt('is closed but you are allowed to view it');
1.145 albertel 484: }
1.106 albertel 485:
1.145 albertel 486: return ($status,$datemsg);
1.20 albertel 487: }
1.247 albertel 488: # this should work exactly like the copy in lonnavmaps.pm
1.246 albertel 489: sub due_date {
1.250 albertel 490: my ($part_id,$symb,$udom,$uname)=@_;
1.246 albertel 491: my $date;
1.250 albertel 492: my $interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
493: $udom,$uname);
1.247 albertel 494: &Apache::lonxml::debug("looking for interval $part_id $symb $interval");
1.250 albertel 495: my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
496: $udom,$uname);
1.247 albertel 497: &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
498: if (defined($interval)) {
1.246 albertel 499: my $first_access=&Apache::lonnet::get_first_access('map',$symb);
1.247 albertel 500: if (defined($first_access)) {
501: $interval = $first_access+$interval;
502: $date = ($interval < $due_date)? $interval : $due_date;
503: } else {
504: $date = $due_date;
505: }
506: } else {
507: $date = $due_date;
1.246 albertel 508: }
509: return $date
510: }
511:
1.192 albertel 512: sub seconds_to_human_length {
513: my ($length)=@_;
514:
515: my $seconds=$length%60; $length=int($length/60);
516: my $minutes=$length%60; $length=int($length/60);
517: my $hours=$length%24; $length=int($length/24);
518: my $days=$length;
519:
520: my $timestr;
521: if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
522: if ($hours > 0) { $timestr.=($timestr?", ":"").
523: &mt('[quant,_1,hour]',$hours); }
524: if ($minutes > 0) { $timestr.=($timestr?", ":"").
525: &mt('[quant,_1,minute]',$minutes); }
526: if ($seconds > 0) { $timestr.=($timestr?", ":"").
527: &mt('[quant,_1,second]',$seconds); }
528: return $timestr;
529: }
530:
1.41 albertel 531: sub showhash {
1.145 albertel 532: my (%hash) = @_;
533: &showhashsubset(\%hash,'.');
534: return '';
1.79 albertel 535: }
536:
1.106 albertel 537: sub showarray {
538: my ($array)=@_;
539: my $string="(";
540: foreach my $elm (@{ $array }) {
1.193 albertel 541: if (ref($elm) eq 'ARRAY') {
542: $string.=&showarray($elm);
543: } elsif (ref($elm) eq 'HASH') {
544: $string.= "HASH --- \n<br />";
545: $string.= &showhashsubset($elm,'.');
1.106 albertel 546: } else {
547: $string.="$elm,"
548: }
549: }
550: chop($string);
551: $string.=")";
552: return $string;
553: }
554:
1.79 albertel 555: sub showhashsubset {
1.145 albertel 556: my ($hash,$keyre) = @_;
557: my $resultkey;
558: foreach $resultkey (sort keys %$hash) {
1.193 albertel 559: if ($resultkey !~ /$keyre/) { next; }
560: if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
561: &Apache::lonxml::debug("$resultkey ---- ".
562: &showarray($$hash{$resultkey}));
563: } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
564: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
565: &showhashsubset($$hash{$resultkey},'.');
566: } else {
567: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.145 albertel 568: }
569: }
570: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
571: return '';
1.41 albertel 572: }
573:
574: sub setuppermissions {
1.204 albertel 575: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
576: my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1.145 albertel 577: if (! $viewgrades &&
1.204 albertel 578: exists($env{'request.course.sec'}) &&
579: $env{'request.course.sec'} !~ /^\s*$/) {
580: $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
581: '/'.$env{'request.course.sec'});
1.145 albertel 582: }
1.244 albertel 583: $Apache::lonhomework::viewgrades = $viewgrades;
584:
1.185 albertel 585: if ($Apache::lonhomework::browse eq 'F' &&
1.204 albertel 586: $env{'form.devalidatecourseresdata'} eq 'on') {
1.185 albertel 587: my (undef,$courseid) = &Apache::lonxml::whichuser();
1.204 albertel 588: &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
589: $env{"course.$courseid.domain"});
1.185 albertel 590: }
1.244 albertel 591:
1.205 albertel 592: my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
593: if (! $modifygrades &&
594: exists($env{'request.course.sec'}) &&
595: $env{'request.course.sec'} !~ /^\s*$/) {
596: $modifygrades =
597: &Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
598: '/'.$env{'request.course.sec'});
599: }
600: $Apache::lonhomework::modifygrades = $modifygrades;
1.244 albertel 601:
602: my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'});
603: if (! $queuegrade &&
604: exists($env{'request.course.sec'}) &&
605: $env{'request.course.sec'} !~ /^\s*$/) {
606: $queuegrade =
607: &Apache::lonnet::allowed('qgr',$env{'request.course.id'}.
608: '/'.$env{'request.course.sec'});
609: }
610: $Apache::lonhomework::queuegrade = $queuegrade;
1.205 albertel 611: return '';
1.41 albertel 612: }
613:
614: sub setupheader {
1.120 albertel 615: my $request=$_[0];
1.197 albertel 616: &Apache::loncommon::content_type($request,'text/html');
1.120 albertel 617: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
618: &Apache::loncommon::no_cache($request);
619: }
1.196 albertel 620: # $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
621: # 'lastrevisiondate'));
1.120 albertel 622: $request->send_http_header;
623: return OK if $request->header_only;
624: return ''
1.41 albertel 625: }
1.35 albertel 626:
1.47 albertel 627: sub handle_save_or_undo {
1.145 albertel 628: my ($request,$problem,$result) = @_;
629: my $file = &Apache::lonnet::filelocation("",$request->uri);
630: my $filebak =$file.".bak";
631: my $filetmp =$file.".tmp";
632: my $error=0;
1.156 albertel 633:
634: &Apache::lonnet::correct_line_ends($result);
1.52 albertel 635:
1.204 albertel 636: if ($env{'form.Undo'} eq &mt('undo')) {
1.145 albertel 637: my $error=0;
638: if (!copy($file,$filetmp)) { $error=1; }
639: if ((!$error) && (!copy($filebak,$file))) { $error=1; }
640: if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
641: if (!$error) {
1.171 albertel 642: &Apache::lonxml::info("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");
1.145 albertel 643: } else {
1.171 albertel 644: &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 645: $error=1;
646: }
1.52 albertel 647: } else {
1.145 albertel 648: my $fs=Apache::File->new(">$filebak");
649: if (defined($fs)) {
650: print $fs $$problem;
1.171 albertel 651: &Apache::lonxml::info("<b>".&mt("Making Backup to").
652: " $filebak</b>");
1.145 albertel 653: } else {
1.171 albertel 654: &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");
1.145 albertel 655: $error=2;
656: }
657: my $fh=Apache::File->new(">$file");
658: if (defined($fh)) {
659: print $fh $$result;
1.171 albertel 660: &Apache::lonxml::info("<b>".&mt("Saving Modifications to").
661: " $file</b>");
1.145 albertel 662: } else {
1.171 albertel 663: &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".
664: &mt("Unable to write to")." $file</b></font>");
1.145 albertel 665: $error|=4;
666: }
1.52 albertel 667: }
1.145 albertel 668: return $error;
1.64 albertel 669: }
670:
1.101 albertel 671: sub analyze_header {
672: my ($request) = @_;
1.238 albertel 673: my $result =
1.240 albertel 674: &Apache::loncommon::start_page('Analyzing a problem',undef);
675:
1.238 albertel 676: $result .=
677: &Apache::lonxml::message_location().'
1.101 albertel 678: <form name="lonhomework" method="POST" action="'.
1.204 albertel 679: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.179 albertel 680: &Apache::structuretags::remember_problem_state().'
1.146 albertel 681: <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
682: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.101 albertel 683: <hr />
1.146 albertel 684: <input type="submit" name="submit" value="'.&mt("View").'" />
1.101 albertel 685: <hr />
686: </form>';
1.171 albertel 687: &Apache::lonxml::add_messages(\$result);
1.101 albertel 688: $request->print($result);
689: $request->rflush();
690: }
691:
1.109 albertel 692: sub analyze_footer {
693: my ($request) = @_;
1.237 albertel 694: $request->print(&Apache::loncommon::end_page());
1.109 albertel 695: $request->rflush();
696: }
697:
1.74 albertel 698: sub analyze {
1.101 albertel 699: my ($request,$file) = @_;
700: &Apache::lonxml::debug("Analyze");
701: my $result;
702: my %overall;
1.219 www 703: my %seedexample;
1.101 albertel 704: my %allparts;
1.204 albertel 705: my $rndseed=$env{'form.rndseed'};
1.101 albertel 706: &analyze_header($request);
1.114 albertel 707: my %prog_state=
1.146 albertel 708: &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
709: &mt('Getting Problem Variants'),
1.204 albertel 710: $env{'form.numtoanalyze'},
1.175 albertel 711: 'inline',undef);
1.204 albertel 712: for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
1.114 albertel 713: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
1.146 albertel 714: &mt('last problem'));
1.182 albertel 715: if (&Apache::loncommon::connection_aborted($request)) { return; }
1.219 www 716: my $thisseed=$i+$rndseed;
1.101 albertel 717: my $subresult=&Apache::lonnet::ssi($request->uri,
718: ('grade_target' => 'analyze'),
1.219 www 719: ('rndseed' => $thisseed));
1.101 albertel 720: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
721: my %analyze=&Apache::lonnet::str2hash($subresult);
1.114 albertel 722: my @parts;
723: if (defined(@{ $analyze{'parts'} })) {
724: @parts=@{ $analyze{'parts'} };
725: }
1.101 albertel 726: foreach my $part (@parts) {
727: if (!exists($allparts{$part})) {$allparts{$part}=1;};
1.109 albertel 728: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
729: $analyze{$part.'.type'} eq 'stringresponse' ||
730: $analyze{$part.'.type'} eq 'formularesponse' ) {
1.219 www 731: my $concatanswer=join("\0",@{ $analyze{$part.'.answer'} });
732: if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
733: @{$analyze{$part.'.answer'}}=('<font color="red">'.&mt('Error').'</font>');
734: }
1.101 albertel 735: push( @{ $overall{$part.'.answer'} },
736: [@{ $analyze{$part.'.answer'} }]);
1.219 www 737: $seedexample{join("\0",@{ $analyze{$part.'.answer'}})}=$thisseed;
1.101 albertel 738: }
739: }
740: }
1.114 albertel 741: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
1.146 albertel 742: &mt('Analyzing Results'));
1.175 albertel 743: $request->print('<hr />'.&mt('List of possible answers').': ');
1.134 albertel 744: foreach my $part (sort(keys(%allparts))) {
1.109 albertel 745: if (defined(@{ $overall{$part.'.answer'} })) {
1.132 albertel 746: my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] });
1.221 albertel 747: $request->print('<table class="thinborder"><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</th></tr>');
1.130 albertel 748: my %frequency;
1.109 albertel 749: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
1.132 albertel 750: $frequency{join("\0",@{ $answer })}++;
1.130 albertel 751: }
1.219 www 752: $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'<br />('
753: .&mt('click for example').')</th></tr>');
1.132 albertel 754: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
1.220 albertel 755: $request->print('<tr><td class="center">'.
756: join('</td><td class="center">',split("\0",$answer)).
757: '</td><td class="center"><a href="'.$request->uri.'?rndseed='.$seedexample{$answer}.'">'.$frequency{$answer}.
1.219 www 758: '</a></td></tr>');
1.109 albertel 759: }
760: $request->print('</table>');
761: } else {
1.162 albertel 762: $request->print('<p>'.&mt('Response').' '.$part.' '.
1.146 albertel 763: &mt('is not analyzable at this time').'</p>');
1.101 albertel 764: }
765: }
1.130 albertel 766: if (scalar(keys(%allparts)) == 0 ) {
1.215 raeburn 767: $request->print('<p>'.&mt('Found no analyzable responses in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
1.130 albertel 768: }
1.114 albertel 769: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1.109 albertel 770: &analyze_footer($request);
1.101 albertel 771: &Apache::lonhomework::showhash(%overall);
772: return $result;
1.74 albertel 773: }
774:
1.64 albertel 775: sub editxmlmode {
1.145 albertel 776: my ($request,$file) = @_;
777: my $result;
778: my $problem=&Apache::lonnet::getfile($file);
779: if ($problem eq -1) {
1.146 albertel 780: &Apache::lonxml::error("<b> ".&mt('Unable to find').
781: " <i>$file</i></b>");
1.145 albertel 782: $problem='';
783: }
1.204 albertel 784: if (defined($env{'form.editxmltext'}) || defined($env{'form.Undo'})) {
1.145 albertel 785: my $error=&handle_save_or_undo($request,\$problem,
1.204 albertel 786: \$env{'form.editxmltext'});
1.145 albertel 787: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
788: }
1.204 albertel 789: &Apache::lonhomework::showhashsubset(\%env,'^form');
790: if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {
791: &Apache::lonhomework::showhashsubset(\%env,'^form');
792: $env{'form.problemmode'}='View';
1.145 albertel 793: &renderpage($request,$file);
794: } else {
795: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1.160 www 796: my $xml_help = '<table><tr><td>'.
797: &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
798: "Problem Editing Help").
799: '</td><td>'.
1.178 albertel 800: &Apache::loncommon::help_open_menu('',undef,undef,undef,5,'Authoring').
801: '</td></tr></table>';
1.145 albertel 802: if ($cols > 80) { $cols = 80; }
803: if ($cols < 70) { $cols = 70; }
804: if ($rows < 20) { $rows = 20; }
1.238 albertel 805: my $start_page =
806: &Apache::loncommon::start_page("EditXML $file",
1.240 albertel 807: &Apache::edit::js_change_detection());
1.227 albertel 808:
1.238 albertel 809: $result.=$start_page.
1.213 albertel 810: &renderpage($request,$file,['no_output_web'],1).
811: &Apache::lonxml::message_location().'
1.227 albertel 812: <form '.&Apache::edit::form_change_detection().' name="lonhomework" method="POST" action="'.
1.204 albertel 813: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.179 albertel 814: &Apache::structuretags::remember_problem_state().'
1.146 albertel 815: <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
1.170 matthew 816: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
1.232 albertel 817: <input type="submit" '.&Apache::edit::submit_ask_anyway().'name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
1.228 albertel 818: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
1.64 albertel 819: <hr />
1.170 matthew 820: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
821: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
1.64 albertel 822: <hr />
1.110 albertel 823: ' . $xml_help . '
1.227 albertel 824: <textarea '.&Apache::edit::element_change_detection().' style="width:100%" rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
1.229 albertel 825: &HTML::Entities::encode($problem,'<>&"').'</textarea><br />
826: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
827: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
1.238 albertel 828: </form>'.&Apache::loncommon::end_page();
1.171 albertel 829: &Apache::lonxml::add_messages(\$result);
1.145 albertel 830: $request->print($result);
831: }
832: return '';
1.47 albertel 833: }
1.189 albertel 834:
1.188 foxr 835: #
836: # Render the page in whatever target desired.
837: #
1.41 albertel 838: sub renderpage {
1.213 albertel 839: my ($request,$file,$targets,$return_string) = @_;
1.52 albertel 840:
1.211 albertel 841: my @targets = @{$targets || [&get_target()]};
1.204 albertel 842: &Apache::lonhomework::showhashsubset(\%env,'form.');
1.145 albertel 843: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1.171 albertel 844: my $overall_result;
1.145 albertel 845: foreach my $target (@targets) {
1.183 albertel 846: # FIXME need to do something intelligent when a problem goes
847: # from viewable to not viewable due to map conditions
848: #&setuppermissions();
849: #if ( $Apache::lonhomework::browse ne '2'
850: # && $Apache::lonhomework::browse ne 'F' ) {
851: # $request->print(" You most likely shouldn't see me.");
852: #}
1.145 albertel 853: #my $t0 = [&gettimeofday()];
1.211 albertel 854: my $output=1;
855: if ($target eq 'no_output_web') {
856: $target = 'web'; $output=0;
857: }
1.145 albertel 858: my $problem=&Apache::lonnet::getfile($file);
1.222 albertel 859: my $result;
1.145 albertel 860: if ($problem eq -1) {
1.222 albertel 861: my $filename=(split('/',$file))[-1];
862: $result.="<b> ".&mt('Unable to find')." <i>$filename</i></b>";
1.145 albertel 863: $problem='';
864: }
1.52 albertel 865:
1.145 albertel 866: my %mystyle;
867: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
868: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
1.204 albertel 869: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
1.145 albertel 870:
871: &Apache::lonxml::debug("Should be parsing now");
1.222 albertel 872: $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
873: &setup_vars($target),%mystyle);
1.145 albertel 874: undef($Apache::lonhomework::parsing_a_problem);
1.214 albertel 875: if (!$output) { $result = ''; }
1.145 albertel 876: #$request->print("Result follows:");
877: if ($target eq 'modified') {
878: &handle_save_or_undo($request,\$problem,\$result);
879: } else {
880: if ($target eq 'analyze') {
881: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
882: undef(%Apache::lonhomework::analyze);
883: }
884: #my $td=&tv_interval($t0);
885: #if ( $Apache::lonxml::debug) {
886: #$result =~ s:</body>::;
887: #$result.="<br />Spent $td seconds processing target $target\n</body>";
888: #}
1.171 albertel 889: # $request->print($result);
890: $overall_result.=$result;
891: # $request->rflush();
1.145 albertel 892: }
893: #$request->print(":Result ends");
894: #my $td=&tv_interval($t0);
1.52 albertel 895: }
1.213 albertel 896: if (!$return_string) {
897: &Apache::lonxml::add_messages(\$overall_result);
898: $request->print($overall_result);
899: $request->rflush();
900: } else {
901: return $overall_result;
902: }
1.41 albertel 903: }
904:
1.42 albertel 905: # with no arg it returns a HTML <option> list of the template titles
906: # with one arg it returns the filename associated with the arg passed
907: sub get_template_list {
1.145 albertel 908: my ($namewanted,$extension) = @_;
909: my $result;
910: my @allnames;
911: &Apache::lonxml::debug("Looking for :$extension:");
912: foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
913: my $name=&Apache::lonnet::metadata($file,'title');
914: if ($namewanted && ($name eq $namewanted)) {
915: $result=$file;
916: last;
917: } else {
918: if ($name) { push (@allnames, $name); }
919: }
920: }
921: if (@allnames && !$result) {
1.146 albertel 922: $result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".
1.145 albertel 923: join('</option><option>',sort(@allnames)).'</option>';
1.42 albertel 924: }
1.145 albertel 925: return $result;
1.42 albertel 926: }
927:
928: sub newproblem {
1.65 matthew 929: my ($request) = @_;
930: my $extension=$request->uri;
931: $extension=~s:^.*\.([\w]+)$:$1:;
932: &Apache::lonxml::debug("Looking for :$extension:");
1.131 albertel 933: my $templatelist=&get_template_list('',$extension);
1.204 albertel 934: if ($env{'form.template'} &&
935: $env{'form.template'} ne "Select a $extension template") {
1.65 matthew 936: use File::Copy;
1.204 albertel 937: my $file = &get_template_list($env{'form.template'},$extension);
1.65 matthew 938: my $dest = &Apache::lonnet::filelocation("",$request->uri);
939: copy($file,$dest);
940: &renderpage($request,$dest);
1.204 albertel 941: } elsif($env{'form.newfile'} && !$templatelist) {
1.131 albertel 942: # I don't like hard-coded filenames but for now, this will work.
943: use File::Copy;
944: my $templatefilename =
945: $request->dir_config('lonIncludes').'/templates/blank.problem';
946: &Apache::lonxml::debug("$templatefilename");
947: my $dest = &Apache::lonnet::filelocation("",$request->uri);
948: copy($templatefilename,$dest);
949: &renderpage($request,$dest);
1.85 albertel 950: } else {
1.176 albertel 951: my $url=&HTML::Entities::encode($request->uri,'<>&"');
952: my $shownurl=$url;
1.157 albertel 953: $shownurl=~s-^/~-/priv/-;
1.65 matthew 954: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.128 albertel 955: my $errormsg;
1.204 albertel 956: if ($env{'form.newfile'}) {
1.146 albertel 957: $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";
1.128 albertel 958: }
1.85 albertel 959: my $instructions;
1.240 albertel 960: my $start_page =
961: &Apache::loncommon::start_page("Create New $extension");
1.146 albertel 962: if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}
1.147 albertel 963: my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',
1.146 albertel 964: 'resource' => 'resource',
965: 'requested' => 'The requested file',
966: 'not exist' => 'currently does not exist',
967: 'createnew' => 'To create a new',
968: 'click' => 'click on the',
969: 'Create' => 'Create',
970: 'button' => 'button');
1.65 matthew 971: $request->print(<<ENDNEWPROBLEM);
1.240 albertel 972: $start_page
1.148 albertel 973: <h1>$lt{'create'} $extension $lt{'resource'}</h1>
1.128 albertel 974: $errormsg
1.157 albertel 975: $lt{'requested'} <tt>$shownurl</tt> $lt{'not exist'}.
1.105 www 976: <p>
1.146 albertel 977: <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>
1.105 www 978: </p>
979: <p><form action="$url" method="POST">
1.42 albertel 980: ENDNEWPROBLEM
1.85 albertel 981: if (defined($templatelist)) {
982: $request->print("<select name=\"template\">$templatelist</select>");
983: }
1.146 albertel 984: $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />");
1.238 albertel 985: $request->print("</form></p>".&Apache::loncommon::end_page());
1.65 matthew 986: }
987: return '';
1.42 albertel 988: }
989:
1.41 albertel 990: sub handler {
1.145 albertel 991: #my $t0 = [&gettimeofday()];
992: my $request=$_[0];
1.223 albertel 993: $Apache::lonxml::request=$request;
1.204 albertel 994: $Apache::lonxml::debug=$env{'user.debug'};
995: $env{'request.uri'}=$request->uri;
1.180 albertel 996: &setuppermissions();
1.145 albertel 997: # some times multiple problemmodes are submitted, need to select
998: # the last one
1.204 albertel 999: if ( defined($env{'form.problemmode'}) && ref($env{'form.problemmode'}) ) {
1000: my $mode=$env{'form.problemmode'}->[-1];
1001: undef $env{'form.problemmode'};
1002: $env{'form.problemmode'}=$mode;
1.145 albertel 1003: }
1.193 albertel 1004:
1.145 albertel 1005: my $file=&Apache::lonnet::filelocation("",$request->uri);
1006:
1007: #check if we know where we are
1.204 albertel 1008: if ($env{'request.course.fn'} && !&Apache::lonnet::symbread()) {
1.145 albertel 1009: # if we are browsing we might not be able to know where we are
1.173 albertel 1010: if ($Apache::lonhomework::browse ne 'F' &&
1.204 albertel 1011: $env{'request.state'} ne "construct") {
1.145 albertel 1012: #should know where we are, so ask
1.190 albertel 1013: $request->internal_redirect('/adm/ambiguous'); return OK;
1.145 albertel 1014: }
1015: }
1.187 albertel 1016: if (&setupheader($request)) { return OK; }
1.244 albertel 1017: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
1.204 albertel 1018: &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
1.145 albertel 1019: my ($symb) = &Apache::lonxml::whichuser();
1020: &Apache::lonxml::debug('symb is '.$symb);
1.204 albertel 1021: if ($env{'request.state'} eq "construct") {
1.145 albertel 1022: if ( -e $file ) {
1023: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1024: ['problemmode']);
1.204 albertel 1025: if (!(defined $env{'form.problemmode'})) {
1.145 albertel 1026: #first visit to problem in construction space
1.204 albertel 1027: $env{'form.problemmode'}='View';
1.145 albertel 1028: &renderpage($request,$file);
1.204 albertel 1029: } elsif ($env{'form.problemmode'} eq &mt('EditXML') ||
1030: $env{'form.problemmode'} eq 'EditXML') {
1.145 albertel 1031: &editxmlmode($request,$file);
1.204 albertel 1032: } elsif ($env{'form.problemmode'} eq &mt('Calculate answers')) {
1.145 albertel 1033: &analyze($request,$file);
1034: } else {
1035: &renderpage($request,$file);
1036: }
1037: } else {
1038: # requested file doesn't exist in contruction space
1039: &newproblem($request);
1040: }
1041: } else {
1042: # just render the page normally outside of construction space
1043: &Apache::lonxml::debug("not construct");
1.52 albertel 1044: &renderpage($request,$file);
1.41 albertel 1045: }
1.145 albertel 1046: #my $td=&tv_interval($t0);
1047: #&Apache::lonxml::debug("Spent $td seconds processing");
1048: # always turn off debug messages
1049: $Apache::lonxml::debug=0;
1050: return OK;
1.52 albertel 1051:
1.1 albertel 1052: }
1053:
1054: 1;
1055: __END__
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