Annotation of loncom/homework/lonhomework.pm, revision 1.241
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.241 ! albertel 4: # $Id: lonhomework.pm,v 1.240 2006/04/13 19:01:40 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 ($env{'form.grade_target'});
89: }
90: if ($env{'form.webgrade'} &&
91: $Apache::lonhomework::modifygrades eq 'F') {
92: return ('grade','webgrade');
1.145 albertel 93: }
1.204 albertel 94: if ( defined($env{'form.submitted'}) &&
95: ( !defined($env{'form.resetdata'})) &&
96: ( !defined($env{'form.newrandomization'}))) {
1.217 albertel 97: return ('grade', 'web');
1.145 albertel 98: } else {
1.217 albertel 99: return ('web');
1.145 albertel 100: }
1.204 albertel 101: } elsif ($env{'request.state'} eq "construct") {
102: if ( defined($env{'form.grade_target'}) ) {
103: return ($env{'form.grade_target'});
1.145 albertel 104: }
1.204 albertel 105: if ( defined($env{'form.preview'})) {
106: if ( defined($env{'form.submitted'})) {
1.145 albertel 107: return ('grade', 'web');
108: } else {
109: return ('web');
110: }
111: } else {
1.204 albertel 112: if ( $env{'form.problemmode'} eq &mt('View') ||
113: $env{'form.problemmode'} eq &mt('Discard Edits and View')) {
114: if ( defined($env{'form.submitted'}) &&
115: (!defined($env{'form.resetdata'})) &&
116: (!defined($env{'form.newrandomization'}))) {
1.145 albertel 117: return ('grade', 'web','answer');
118: } else {
119: return ('web','answer');
120: }
1.204 albertel 121: } elsif ( $env{'form.problemmode'} eq &mt('Edit') ||
122: $env{'form.problemmode'} eq 'Edit') {
123: if ( $env{'form.submitted'} eq 'edit' ) {
124: if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {
1.145 albertel 125: return ('modified','web','answer');
126: } else {
1.211 albertel 127: return ('modified','no_output_web','edit');
1.145 albertel 128: }
129: } else {
1.211 albertel 130: return ('no_output_web','edit');
1.145 albertel 131: }
132: } else {
133: return ('web');
134: }
135: }
1.15 albertel 136: }
1.145 albertel 137: return ();
1.5 albertel 138: }
139:
1.3 albertel 140: sub setup_vars {
1.145 albertel 141: my ($target) = @_;
142: return ';'
1.11 albertel 143: # return ';$external::target='.$target.';';
1.2 albertel 144: }
145:
1.36 albertel 146: sub createmenu {
1.145 albertel 147: my ($which,$request)=@_;
148: if ($which eq 'grade') {
149: $request->print('<script language="JavaScript">
1.91 albertel 150: hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
1.52 albertel 151: "height=350,width=150,menubar=no");
152: </script>');
1.145 albertel 153: }
1.36 albertel 154: }
155:
1.200 albertel 156: sub proctor_checked_in {
1.226 albertel 157: my ($slot_name,$slot,$type)=@_;
158: my @possible_proctors=split(",",$slot->{'proctor'});
159:
160: my $key;
161: if ($type eq 'Task') {
1.230 albertel 162: my $version=$Apache::lonhomework::history{'resource.0.version'};
163: $key ="resource.$version.0.checkedin";
1.226 albertel 164: } elsif ($type eq 'problem') {
165: $key ='resource.0.checkedin';
166: }
167:
168: foreach my $possible (@possible_proctors) {
169: if ($Apache::lonhomework::history{$key} eq $possible
170: && $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
1.202 albertel 171: return 1;
172: }
173: }
1.226 albertel 174:
1.200 albertel 175: return 0;
176: }
177:
1.52 albertel 178: $Apache::lonxml::browse='';
1.152 albertel 179: sub check_ip_acc {
180: my ($acc)=@_;
1.218 albertel 181: &Apache::lonxml::debug("acc is $acc");
182: if (!defined($acc) || $acc =~ /^\s*$/ || $acc =~/^\s*no\s*$/i) {
183: return 1;
184: }
1.152 albertel 185: my $allowed=0;
186: my $ip=$ENV{'REMOTE_ADDR'};
187: my $name;
188: foreach my $pattern (split(',',$acc)) {
1.233 albertel 189: $pattern =~ s/^\s*//;
190: $pattern =~ s/\s*$//;
1.152 albertel 191: if ($pattern =~ /\*$/) {
192: #35.8.*
193: $pattern=~s/\*//;
194: if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
195: } elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) {
196: #35.8.3.[34-56]
197: my $low=$2;
198: my $high=$3;
199: $pattern=$1;
200: if ($ip =~ /^\Q$pattern\E/) {
201: my $last=(split(/\./,$ip))[3];
202: if ($last <=$high && $last >=$low) { $allowed=1; }
203: }
204: } elsif ($pattern =~ /^\*/) {
205: #*.msu.edu
206: $pattern=~s/\*//;
207: if (!defined($name)) {
208: use Socket;
209: my $netaddr=inet_aton($ip);
210: ($name)=gethostbyaddr($netaddr,AF_INET);
1.158 albertel 211: }
1.152 albertel 212: if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
213: } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
214: #127.0.0.1
215: if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
216: } else {
217: #some.name.com
218: if (!defined($name)) {
219: use Socket;
220: my $netaddr=inet_aton($ip);
221: ($name)=gethostbyaddr($netaddr,AF_INET);
222: }
223: if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
224: }
225: if ($allowed) { last; }
226: }
227: return $allowed;
228: }
1.198 albertel 229:
1.226 albertel 230: sub check_slot_access {
231: my ($id,$type)=@_;
232:
1.207 albertel 233: # does it pass normal muster
1.226 albertel 234: my ($status,$datemsg)=&check_access($id);
235:
236: my $useslots = &Apache::lonnet::EXT("resource.$id.useslots");
237: if ($useslots ne 'resource') {
238: return ($status,$datemsg);
239: }
240:
1.200 albertel 241: if ($status eq 'SHOW_ANSWER' ||
242: $status eq 'CLOSED' ||
243: $status eq 'INVALID_ACCESS' ||
244: $status eq 'UNAVAILABLE') {
245: return ($status,$datemsg);
246: }
1.204 albertel 247: if ($env{'request.state'} eq "construct") {
1.203 albertel 248: return ($status,$datemsg);
249: }
1.226 albertel 250:
251: if ($type eq 'Task') {
252: my $version=$Apache::lonhomework::history{'resource.version'};
1.230 albertel 253: if ($Apache::lonhomework::history{"resource.$version.0.checkedin"} &&
254: $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') {
1.226 albertel 255: return ('SHOW_ANSWER');
256: }
1.207 albertel 257: }
1.226 albertel 258:
1.210 albertel 259: my @slots=
260: (split(':',&Apache::lonnet::EXT("resource.$id.availablestudent")),
261: split(':',&Apache::lonnet::EXT("resource.$id.available")));
262:
1.200 albertel 263: # if (!@slots) {
264: # return ($status,$datemsg);
265: # }
266: my $slotstatus='NOT_IN_A_SLOT';
1.206 albertel 267: my ($returned_slot,$slot_name);
1.210 albertel 268: foreach my $slot (@slots) {
1.241 ! albertel 269: $slot =~ s/(^\s*|\s*$)//g;
1.201 albertel 270: &Apache::lonxml::debug("getting $slot");
1.200 albertel 271: my %slot=&Apache::lonnet::get_slot($slot);
1.201 albertel 272: &Apache::lonhomework::showhash(%slot);
1.200 albertel 273: if ($slot{'starttime'} < time &&
274: $slot{'endtime'} > time &&
1.201 albertel 275: &check_ip_acc($slot{'ip'})) {
1.202 albertel 276: &Apache::lonxml::debug("$slot is good");
277: $slotstatus='NEEDS_CHECKIN';
278: $returned_slot=\%slot;
1.206 albertel 279: $slot_name=$slot;
1.200 albertel 280: last;
281: }
282: }
1.202 albertel 283: if ($slotstatus eq 'NEEDS_CHECKIN' &&
1.226 albertel 284: &proctor_checked_in($slot_name,$returned_slot,$type)) {
1.202 albertel 285: &Apache::lonxml::debug("protoctor checked in");
1.200 albertel 286: $slotstatus='CAN_ANSWER';
287: }
1.226 albertel 288:
1.235 albertel 289: my ($is_correct,$got_grade,$checkedin);
1.226 albertel 290: if ($type eq 'Task') {
1.230 albertel 291: my $version=$Apache::lonhomework::history{'resource.0.version'};
1.231 albertel 292: $got_grade =
293: ($Apache::lonhomework::history{"resource.$version.0.status"}
294: =~ /^(?:pass|fail)$/);
1.235 albertel 295: $is_correct =
296: ($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass'
297: || $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ );
1.226 albertel 298: $checkedin =
1.230 albertel 299: $Apache::lonhomework::history{"resource.$version.0.checkedin"};
1.226 albertel 300: } elsif ($type eq 'problem') {
1.231 albertel 301: $got_grade = 1;
1.226 albertel 302: $checkedin = $Apache::lonhomework::history{"resource.0.checkedin"};
303: }
304:
1.235 albertel 305: &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
306:
1.236 albertel 307: # has a current checked in recrd, but hasn't got a grade, must be awaiting
308: # a grade
309: if ($checkedin
310: && !$got_grade) {
311: return ('WAITING_FOR_GRADE');
312: }
313:
1.226 albertel 314: if ($slotstatus eq 'NOT_IN_A_SLOT'
315: && $checkedin ) {
316:
1.231 albertel 317: if ($got_grade) {
1.209 albertel 318: return ('SHOW_ANSWER');
319: } else {
320: return ('WAITING_FOR_GRADE');
321: }
1.226 albertel 322:
1.207 albertel 323: }
1.235 albertel 324: if ( $is_correct) {
325: return ('SHOW_ANSWER');
326: }
1.225 albertel 327: if ( $status eq 'CANNOT_ANSWER' &&
328: ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) {
329: return ($status,$datemsg);
330: }
331:
1.206 albertel 332: return ($slotstatus,$datemsg,$slot_name,$returned_slot);
1.198 albertel 333: }
1.200 albertel 334:
1.92 bowersj2 335: # JB, 9/24/2002: Any changes in this function may require a change
336: # in lonnavmaps::resource::getDateStatus.
1.53 www 337: sub check_access {
1.145 albertel 338: my ($id) = @_;
339: my $date ='';
340: my $status;
341: my $datemsg = '';
342: my $lastdate = '';
343: my $type;
344: my $passed;
345:
1.204 albertel 346: if ($env{'request.state'} eq "construct") {
347: if ($env{'form.problemstate'}) {
348: if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
349: if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct' &&
1.167 albertel 350: lc($Apache::lonhomework::problemstatus) eq 'no')) {
1.168 albertel 351: return ('CANNOT_ANSWER',
1.174 www 352: &mt('is in this state due to author settings.'));
1.167 albertel 353: }
1.165 albertel 354: } else {
1.204 albertel 355: return ($env{'form.problemstate'},
1.174 www 356: &mt('is in this state due to author settings.'));
1.165 albertel 357: }
358: }
1.145 albertel 359: &Apache::lonxml::debug("in construction ignoring dates");
360: $status='CAN_ANSWER';
1.146 albertel 361: $datemsg=&mt('is in under construction');
1.163 albertel 362: # return ($status,$datemsg);
1.145 albertel 363: }
364:
365: &Apache::lonxml::debug("checking for part :$id:");
366: &Apache::lonxml::debug("time:".time);
1.152 albertel 367:
1.212 albertel 368: my ($symb)=&Apache::lonxml::whichuser();
369: &Apache::lonxml::debug("symb:".$symb);
370: #if ($env{'request.state'} ne "construct" && $symb ne '') {
1.204 albertel 371: if ($env{'request.state'} ne "construct") {
1.163 albertel 372: my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));
373: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
374: $status='INVALID_ACCESS';
375: $date=&mt("can not be accessed from your location.");
1.145 albertel 376: return($status,$date);
377: }
1.163 albertel 378:
1.226 albertel 379: foreach my $temp ("opendate","duedate","answerdate") {
1.163 albertel 380: $lastdate = $date;
381: $date = &Apache::lonnet::EXT("resource.$id.$temp");
382: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
383: if ($thistype =~ /^(con_lost|no_such_host)/ ||
384: $date =~ /^(con_lost|no_such_host)/) {
385: $status='UNAVAILABLE';
386: $date=&mt("may open later.");
387: return($status,$date);
388: }
389: if ($thistype eq 'date_interval') {
390: if ($temp eq 'opendate') {
391: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
392: }
393: if ($temp eq 'answerdate') {
394: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
395: }
1.145 albertel 396: }
1.163 albertel 397: &Apache::lonxml::debug("found :$date: for :$temp:");
398: if ($date eq '') {
399: $date = &mt("an unknown date"); $passed = 0;
400: } elsif ($date eq 'con_lost') {
401: $date = &mt("an indeterminate date"); $passed = 0;
402: } else {
403: if (time < $date) { $passed = 0; } else { $passed = 1; }
404: $date = localtime $date;
1.145 albertel 405: }
1.163 albertel 406: if (!$passed) { $type=$temp; last; }
1.145 albertel 407: }
1.163 albertel 408: &Apache::lonxml::debug("have :$type:$passed:");
409: if ($passed) {
410: $status='SHOW_ANSWER';
411: $datemsg=$date;
412: } elsif ($type eq 'opendate') {
413: $status='CLOSED';
414: $datemsg = &mt("will open on")." $date";
415: } elsif ($type eq 'duedate') {
416: $status='CAN_ANSWER';
417: $datemsg = &mt("is due at")." $date";
418: } elsif ($type eq 'answerdate') {
419: $status='CLOSED';
420: $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
1.145 albertel 421: }
422: }
1.212 albertel 423: if ($status eq 'CAN_ANSWER' ||
424: (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
1.145 albertel 425: #check #tries, and if correct.
426: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
427: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
428: if ( $tries eq '' ) { $tries = '0'; }
1.164 albertel 429: if ( $maxtries eq '' &&
1.204 albertel 430: $env{'request.state'} ne 'construct') { $maxtries = '2'; }
1.164 albertel 431: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
1.145 albertel 432: # if (correct and show prob status) or excused then CANNOT_ANSWER
433: if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
434: &&
435: lc($Apache::lonhomework::problemstatus) ne 'no')
436: ||
437: $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
438: $status = 'CANNOT_ANSWER';
439: }
1.121 albertel 440: }
1.181 albertel 441: if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
1.177 albertel 442: my $interval=&Apache::lonnet::EXT("resource.$id.interval");
443: &Apache::lonxml::debug("looking for interval $interval");
444: if ($interval) {
445: my $first_access=&Apache::lonnet::get_first_access('map');
446: &Apache::lonxml::debug("looking for accesstime $first_access");
447: if (!$first_access) {
448: $status='NOT_YET_VIEWED';
1.192 albertel 449: $datemsg=&seconds_to_human_length($interval);
1.177 albertel 450: } else {
451: my $newdate=localtime($first_access+$interval);
452: if (time > ($first_access+$interval)) {
453: $status='CLOSED';
454: $datemsg = &mt("was due on")." $newdate".&mt(", and answers will be available on")." $date";
455: } else {
456: $datemsg = &mt("is due at")." $newdate";
457: }
458: }
459: }
460: }
1.133 albertel 461: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
462: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
463: # return ('UNCHECKEDOUT','needs to be checked out');
464: #}
1.54 www 465:
466:
1.145 albertel 467: &Apache::lonxml::debug("sending back :$status:$datemsg:");
468: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
469: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
470: $status='CAN_ANSWER';
1.146 albertel 471: $datemsg=&mt('is closed but you are allowed to view it');
1.145 albertel 472: }
1.106 albertel 473:
1.145 albertel 474: return ($status,$datemsg);
1.20 albertel 475: }
476:
1.192 albertel 477: sub seconds_to_human_length {
478: my ($length)=@_;
479:
480: my $seconds=$length%60; $length=int($length/60);
481: my $minutes=$length%60; $length=int($length/60);
482: my $hours=$length%24; $length=int($length/24);
483: my $days=$length;
484:
485: my $timestr;
486: if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
487: if ($hours > 0) { $timestr.=($timestr?", ":"").
488: &mt('[quant,_1,hour]',$hours); }
489: if ($minutes > 0) { $timestr.=($timestr?", ":"").
490: &mt('[quant,_1,minute]',$minutes); }
491: if ($seconds > 0) { $timestr.=($timestr?", ":"").
492: &mt('[quant,_1,second]',$seconds); }
493: return $timestr;
494: }
495:
1.41 albertel 496: sub showhash {
1.145 albertel 497: my (%hash) = @_;
498: &showhashsubset(\%hash,'.');
499: return '';
1.79 albertel 500: }
501:
1.106 albertel 502: sub showarray {
503: my ($array)=@_;
504: my $string="(";
505: foreach my $elm (@{ $array }) {
1.193 albertel 506: if (ref($elm) eq 'ARRAY') {
507: $string.=&showarray($elm);
508: } elsif (ref($elm) eq 'HASH') {
509: $string.= "HASH --- \n<br />";
510: $string.= &showhashsubset($elm,'.');
1.106 albertel 511: } else {
512: $string.="$elm,"
513: }
514: }
515: chop($string);
516: $string.=")";
517: return $string;
518: }
519:
1.79 albertel 520: sub showhashsubset {
1.145 albertel 521: my ($hash,$keyre) = @_;
522: my $resultkey;
523: foreach $resultkey (sort keys %$hash) {
1.193 albertel 524: if ($resultkey !~ /$keyre/) { next; }
525: if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
526: &Apache::lonxml::debug("$resultkey ---- ".
527: &showarray($$hash{$resultkey}));
528: } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
529: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
530: &showhashsubset($$hash{$resultkey},'.');
531: } else {
532: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.145 albertel 533: }
534: }
535: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
536: return '';
1.41 albertel 537: }
538:
539: sub setuppermissions {
1.204 albertel 540: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
541: my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1.145 albertel 542: if (! $viewgrades &&
1.204 albertel 543: exists($env{'request.course.sec'}) &&
544: $env{'request.course.sec'} !~ /^\s*$/) {
545: $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
546: '/'.$env{'request.course.sec'});
1.145 albertel 547: }
1.188 foxr 548: $Apache::lonhomework::viewgrades = $viewgrades; # File global variable...dirt.
1.185 albertel 549: if ($Apache::lonhomework::browse eq 'F' &&
1.204 albertel 550: $env{'form.devalidatecourseresdata'} eq 'on') {
1.185 albertel 551: my (undef,$courseid) = &Apache::lonxml::whichuser();
1.204 albertel 552: &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
553: $env{"course.$courseid.domain"});
1.185 albertel 554: }
1.205 albertel 555: my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
556: if (! $modifygrades &&
557: exists($env{'request.course.sec'}) &&
558: $env{'request.course.sec'} !~ /^\s*$/) {
559: $modifygrades =
560: &Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
561: '/'.$env{'request.course.sec'});
562: }
563: $Apache::lonhomework::modifygrades = $modifygrades;
564: return '';
1.41 albertel 565: }
566:
567: sub setupheader {
1.120 albertel 568: my $request=$_[0];
1.197 albertel 569: &Apache::loncommon::content_type($request,'text/html');
1.120 albertel 570: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
571: &Apache::loncommon::no_cache($request);
572: }
1.196 albertel 573: # $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
574: # 'lastrevisiondate'));
1.120 albertel 575: $request->send_http_header;
576: return OK if $request->header_only;
577: return ''
1.41 albertel 578: }
1.35 albertel 579:
1.47 albertel 580: sub handle_save_or_undo {
1.145 albertel 581: my ($request,$problem,$result) = @_;
582: my $file = &Apache::lonnet::filelocation("",$request->uri);
583: my $filebak =$file.".bak";
584: my $filetmp =$file.".tmp";
585: my $error=0;
1.156 albertel 586:
587: &Apache::lonnet::correct_line_ends($result);
1.52 albertel 588:
1.204 albertel 589: if ($env{'form.Undo'} eq &mt('undo')) {
1.145 albertel 590: my $error=0;
591: if (!copy($file,$filetmp)) { $error=1; }
592: if ((!$error) && (!copy($filebak,$file))) { $error=1; }
593: if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
594: if (!$error) {
1.171 albertel 595: &Apache::lonxml::info("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");
1.145 albertel 596: } else {
1.171 albertel 597: &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 598: $error=1;
599: }
1.52 albertel 600: } else {
1.145 albertel 601: my $fs=Apache::File->new(">$filebak");
602: if (defined($fs)) {
603: print $fs $$problem;
1.171 albertel 604: &Apache::lonxml::info("<b>".&mt("Making Backup to").
605: " $filebak</b>");
1.145 albertel 606: } else {
1.171 albertel 607: &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");
1.145 albertel 608: $error=2;
609: }
610: my $fh=Apache::File->new(">$file");
611: if (defined($fh)) {
612: print $fh $$result;
1.171 albertel 613: &Apache::lonxml::info("<b>".&mt("Saving Modifications to").
614: " $file</b>");
1.145 albertel 615: } else {
1.171 albertel 616: &Apache::lonxml::info("<font color=\"red\" size=\"+1\"><b>".
617: &mt("Unable to write to")." $file</b></font>");
1.145 albertel 618: $error|=4;
619: }
1.52 albertel 620: }
1.145 albertel 621: return $error;
1.64 albertel 622: }
623:
1.101 albertel 624: sub analyze_header {
625: my ($request) = @_;
1.238 albertel 626: my $result =
1.240 albertel 627: &Apache::loncommon::start_page('Analyzing a problem',undef);
628:
1.238 albertel 629: $result .=
630: &Apache::lonxml::message_location().'
1.101 albertel 631: <form name="lonhomework" method="POST" action="'.
1.204 albertel 632: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.179 albertel 633: &Apache::structuretags::remember_problem_state().'
1.146 albertel 634: <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
635: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.101 albertel 636: <hr />
1.146 albertel 637: <input type="submit" name="submit" value="'.&mt("View").'" />
1.101 albertel 638: <hr />
639: </form>';
1.171 albertel 640: &Apache::lonxml::add_messages(\$result);
1.101 albertel 641: $request->print($result);
642: $request->rflush();
643: }
644:
1.109 albertel 645: sub analyze_footer {
646: my ($request) = @_;
1.237 albertel 647: $request->print(&Apache::loncommon::end_page());
1.109 albertel 648: $request->rflush();
649: }
650:
1.74 albertel 651: sub analyze {
1.101 albertel 652: my ($request,$file) = @_;
653: &Apache::lonxml::debug("Analyze");
654: my $result;
655: my %overall;
1.219 www 656: my %seedexample;
1.101 albertel 657: my %allparts;
1.204 albertel 658: my $rndseed=$env{'form.rndseed'};
1.101 albertel 659: &analyze_header($request);
1.114 albertel 660: my %prog_state=
1.146 albertel 661: &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
662: &mt('Getting Problem Variants'),
1.204 albertel 663: $env{'form.numtoanalyze'},
1.175 albertel 664: 'inline',undef);
1.204 albertel 665: for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
1.114 albertel 666: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
1.146 albertel 667: &mt('last problem'));
1.182 albertel 668: if (&Apache::loncommon::connection_aborted($request)) { return; }
1.219 www 669: my $thisseed=$i+$rndseed;
1.101 albertel 670: my $subresult=&Apache::lonnet::ssi($request->uri,
671: ('grade_target' => 'analyze'),
1.219 www 672: ('rndseed' => $thisseed));
1.101 albertel 673: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
674: my %analyze=&Apache::lonnet::str2hash($subresult);
1.114 albertel 675: my @parts;
676: if (defined(@{ $analyze{'parts'} })) {
677: @parts=@{ $analyze{'parts'} };
678: }
1.101 albertel 679: foreach my $part (@parts) {
680: if (!exists($allparts{$part})) {$allparts{$part}=1;};
1.109 albertel 681: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
682: $analyze{$part.'.type'} eq 'stringresponse' ||
683: $analyze{$part.'.type'} eq 'formularesponse' ) {
1.219 www 684: my $concatanswer=join("\0",@{ $analyze{$part.'.answer'} });
685: if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
686: @{$analyze{$part.'.answer'}}=('<font color="red">'.&mt('Error').'</font>');
687: }
1.101 albertel 688: push( @{ $overall{$part.'.answer'} },
689: [@{ $analyze{$part.'.answer'} }]);
1.219 www 690: $seedexample{join("\0",@{ $analyze{$part.'.answer'}})}=$thisseed;
1.101 albertel 691: }
692: }
693: }
1.114 albertel 694: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
1.146 albertel 695: &mt('Analyzing Results'));
1.175 albertel 696: $request->print('<hr />'.&mt('List of possible answers').': ');
1.134 albertel 697: foreach my $part (sort(keys(%allparts))) {
1.109 albertel 698: if (defined(@{ $overall{$part.'.answer'} })) {
1.132 albertel 699: my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] });
1.221 albertel 700: $request->print('<table class="thinborder"><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</th></tr>');
1.130 albertel 701: my %frequency;
1.109 albertel 702: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
1.132 albertel 703: $frequency{join("\0",@{ $answer })}++;
1.130 albertel 704: }
1.219 www 705: $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'<br />('
706: .&mt('click for example').')</th></tr>');
1.132 albertel 707: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
1.220 albertel 708: $request->print('<tr><td class="center">'.
709: join('</td><td class="center">',split("\0",$answer)).
710: '</td><td class="center"><a href="'.$request->uri.'?rndseed='.$seedexample{$answer}.'">'.$frequency{$answer}.
1.219 www 711: '</a></td></tr>');
1.109 albertel 712: }
713: $request->print('</table>');
714: } else {
1.162 albertel 715: $request->print('<p>'.&mt('Response').' '.$part.' '.
1.146 albertel 716: &mt('is not analyzable at this time').'</p>');
1.101 albertel 717: }
718: }
1.130 albertel 719: if (scalar(keys(%allparts)) == 0 ) {
1.215 raeburn 720: $request->print('<p>'.&mt('Found no analyzable responses in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
1.130 albertel 721: }
1.114 albertel 722: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1.109 albertel 723: &analyze_footer($request);
1.101 albertel 724: &Apache::lonhomework::showhash(%overall);
725: return $result;
1.74 albertel 726: }
727:
1.64 albertel 728: sub editxmlmode {
1.145 albertel 729: my ($request,$file) = @_;
730: my $result;
731: my $problem=&Apache::lonnet::getfile($file);
732: if ($problem eq -1) {
1.146 albertel 733: &Apache::lonxml::error("<b> ".&mt('Unable to find').
734: " <i>$file</i></b>");
1.145 albertel 735: $problem='';
736: }
1.204 albertel 737: if (defined($env{'form.editxmltext'}) || defined($env{'form.Undo'})) {
1.145 albertel 738: my $error=&handle_save_or_undo($request,\$problem,
1.204 albertel 739: \$env{'form.editxmltext'});
1.145 albertel 740: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
741: }
1.204 albertel 742: &Apache::lonhomework::showhashsubset(\%env,'^form');
743: if ( $env{'form.submit'} eq &mt('Submit Changes and View') ) {
744: &Apache::lonhomework::showhashsubset(\%env,'^form');
745: $env{'form.problemmode'}='View';
1.145 albertel 746: &renderpage($request,$file);
747: } else {
748: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1.160 www 749: my $xml_help = '<table><tr><td>'.
750: &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
751: "Problem Editing Help").
752: '</td><td>'.
1.178 albertel 753: &Apache::loncommon::help_open_menu('',undef,undef,undef,5,'Authoring').
754: '</td></tr></table>';
1.145 albertel 755: if ($cols > 80) { $cols = 80; }
756: if ($cols < 70) { $cols = 70; }
757: if ($rows < 20) { $rows = 20; }
1.238 albertel 758: my $start_page =
759: &Apache::loncommon::start_page("EditXML $file",
1.240 albertel 760: &Apache::edit::js_change_detection());
1.227 albertel 761:
1.238 albertel 762: $result.=$start_page.
1.213 albertel 763: &renderpage($request,$file,['no_output_web'],1).
764: &Apache::lonxml::message_location().'
1.227 albertel 765: <form '.&Apache::edit::form_change_detection().' name="lonhomework" method="POST" action="'.
1.204 albertel 766: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.179 albertel 767: &Apache::structuretags::remember_problem_state().'
1.146 albertel 768: <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
1.170 matthew 769: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
1.232 albertel 770: <input type="submit" '.&Apache::edit::submit_ask_anyway().'name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
1.228 albertel 771: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
1.64 albertel 772: <hr />
1.170 matthew 773: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
774: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
1.64 albertel 775: <hr />
1.110 albertel 776: ' . $xml_help . '
1.227 albertel 777: <textarea '.&Apache::edit::element_change_detection().' style="width:100%" rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
1.229 albertel 778: &HTML::Entities::encode($problem,'<>&"').'</textarea><br />
779: <input type="submit" name="submit" accesskey="s" value="'.&mt('Submit Changes').'" />
780: <input type="submit" name="submit" accesskey="v" value="'.&mt('Submit Changes and View').'" />
1.238 albertel 781: </form>'.&Apache::loncommon::end_page();
1.171 albertel 782: &Apache::lonxml::add_messages(\$result);
1.145 albertel 783: $request->print($result);
784: }
785: return '';
1.47 albertel 786: }
1.189 albertel 787:
1.188 foxr 788: #
789: # Render the page in whatever target desired.
790: #
1.41 albertel 791: sub renderpage {
1.213 albertel 792: my ($request,$file,$targets,$return_string) = @_;
1.52 albertel 793:
1.211 albertel 794: my @targets = @{$targets || [&get_target()]};
1.204 albertel 795: &Apache::lonhomework::showhashsubset(\%env,'form.');
1.145 albertel 796: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1.171 albertel 797: my $overall_result;
1.145 albertel 798: foreach my $target (@targets) {
1.183 albertel 799: # FIXME need to do something intelligent when a problem goes
800: # from viewable to not viewable due to map conditions
801: #&setuppermissions();
802: #if ( $Apache::lonhomework::browse ne '2'
803: # && $Apache::lonhomework::browse ne 'F' ) {
804: # $request->print(" You most likely shouldn't see me.");
805: #}
1.145 albertel 806: #my $t0 = [&gettimeofday()];
1.211 albertel 807: my $output=1;
808: if ($target eq 'no_output_web') {
809: $target = 'web'; $output=0;
810: }
1.145 albertel 811: my $problem=&Apache::lonnet::getfile($file);
1.222 albertel 812: my $result;
1.145 albertel 813: if ($problem eq -1) {
1.222 albertel 814: my $filename=(split('/',$file))[-1];
815: $result.="<b> ".&mt('Unable to find')." <i>$filename</i></b>";
1.145 albertel 816: $problem='';
817: }
1.52 albertel 818:
1.145 albertel 819: my %mystyle;
820: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
821: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
1.204 albertel 822: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
1.145 albertel 823:
824: &Apache::lonxml::debug("Should be parsing now");
1.222 albertel 825: $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
826: &setup_vars($target),%mystyle);
1.145 albertel 827: undef($Apache::lonhomework::parsing_a_problem);
1.214 albertel 828: if (!$output) { $result = ''; }
1.145 albertel 829: #$request->print("Result follows:");
830: if ($target eq 'modified') {
831: &handle_save_or_undo($request,\$problem,\$result);
832: } else {
833: if ($target eq 'analyze') {
834: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
835: undef(%Apache::lonhomework::analyze);
836: }
837: #my $td=&tv_interval($t0);
838: #if ( $Apache::lonxml::debug) {
839: #$result =~ s:</body>::;
840: #$result.="<br />Spent $td seconds processing target $target\n</body>";
841: #}
1.171 albertel 842: # $request->print($result);
843: $overall_result.=$result;
844: # $request->rflush();
1.145 albertel 845: }
846: #$request->print(":Result ends");
847: #my $td=&tv_interval($t0);
1.52 albertel 848: }
1.213 albertel 849: if (!$return_string) {
850: &Apache::lonxml::add_messages(\$overall_result);
851: $request->print($overall_result);
852: $request->rflush();
853: } else {
854: return $overall_result;
855: }
1.41 albertel 856: }
857:
1.42 albertel 858: # with no arg it returns a HTML <option> list of the template titles
859: # with one arg it returns the filename associated with the arg passed
860: sub get_template_list {
1.145 albertel 861: my ($namewanted,$extension) = @_;
862: my $result;
863: my @allnames;
864: &Apache::lonxml::debug("Looking for :$extension:");
865: foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
866: my $name=&Apache::lonnet::metadata($file,'title');
867: if ($namewanted && ($name eq $namewanted)) {
868: $result=$file;
869: last;
870: } else {
871: if ($name) { push (@allnames, $name); }
872: }
873: }
874: if (@allnames && !$result) {
1.146 albertel 875: $result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".
1.145 albertel 876: join('</option><option>',sort(@allnames)).'</option>';
1.42 albertel 877: }
1.145 albertel 878: return $result;
1.42 albertel 879: }
880:
881: sub newproblem {
1.65 matthew 882: my ($request) = @_;
883: my $extension=$request->uri;
884: $extension=~s:^.*\.([\w]+)$:$1:;
885: &Apache::lonxml::debug("Looking for :$extension:");
1.131 albertel 886: my $templatelist=&get_template_list('',$extension);
1.204 albertel 887: if ($env{'form.template'} &&
888: $env{'form.template'} ne "Select a $extension template") {
1.65 matthew 889: use File::Copy;
1.204 albertel 890: my $file = &get_template_list($env{'form.template'},$extension);
1.65 matthew 891: my $dest = &Apache::lonnet::filelocation("",$request->uri);
892: copy($file,$dest);
893: &renderpage($request,$dest);
1.204 albertel 894: } elsif($env{'form.newfile'} && !$templatelist) {
1.131 albertel 895: # I don't like hard-coded filenames but for now, this will work.
896: use File::Copy;
897: my $templatefilename =
898: $request->dir_config('lonIncludes').'/templates/blank.problem';
899: &Apache::lonxml::debug("$templatefilename");
900: my $dest = &Apache::lonnet::filelocation("",$request->uri);
901: copy($templatefilename,$dest);
902: &renderpage($request,$dest);
1.85 albertel 903: } else {
1.176 albertel 904: my $url=&HTML::Entities::encode($request->uri,'<>&"');
905: my $shownurl=$url;
1.157 albertel 906: $shownurl=~s-^/~-/priv/-;
1.65 matthew 907: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.128 albertel 908: my $errormsg;
1.204 albertel 909: if ($env{'form.newfile'}) {
1.146 albertel 910: $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";
1.128 albertel 911: }
1.85 albertel 912: my $instructions;
1.240 albertel 913: my $start_page =
914: &Apache::loncommon::start_page("Create New $extension");
1.146 albertel 915: if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}
1.147 albertel 916: my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',
1.146 albertel 917: 'resource' => 'resource',
918: 'requested' => 'The requested file',
919: 'not exist' => 'currently does not exist',
920: 'createnew' => 'To create a new',
921: 'click' => 'click on the',
922: 'Create' => 'Create',
923: 'button' => 'button');
1.65 matthew 924: $request->print(<<ENDNEWPROBLEM);
1.240 albertel 925: $start_page
1.148 albertel 926: <h1>$lt{'create'} $extension $lt{'resource'}</h1>
1.128 albertel 927: $errormsg
1.157 albertel 928: $lt{'requested'} <tt>$shownurl</tt> $lt{'not exist'}.
1.105 www 929: <p>
1.146 albertel 930: <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>
1.105 www 931: </p>
932: <p><form action="$url" method="POST">
1.42 albertel 933: ENDNEWPROBLEM
1.85 albertel 934: if (defined($templatelist)) {
935: $request->print("<select name=\"template\">$templatelist</select>");
936: }
1.146 albertel 937: $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />");
1.238 albertel 938: $request->print("</form></p>".&Apache::loncommon::end_page());
1.65 matthew 939: }
940: return '';
1.42 albertel 941: }
942:
1.41 albertel 943: sub handler {
1.145 albertel 944: #my $t0 = [&gettimeofday()];
945: my $request=$_[0];
1.223 albertel 946: $Apache::lonxml::request=$request;
1.204 albertel 947: $Apache::lonxml::debug=$env{'user.debug'};
948: $env{'request.uri'}=$request->uri;
1.180 albertel 949: &setuppermissions();
1.145 albertel 950: # some times multiple problemmodes are submitted, need to select
951: # the last one
1.204 albertel 952: if ( defined($env{'form.problemmode'}) && ref($env{'form.problemmode'}) ) {
953: my $mode=$env{'form.problemmode'}->[-1];
954: undef $env{'form.problemmode'};
955: $env{'form.problemmode'}=$mode;
1.145 albertel 956: }
1.193 albertel 957:
1.145 albertel 958: my $file=&Apache::lonnet::filelocation("",$request->uri);
959:
960: #check if we know where we are
1.204 albertel 961: if ($env{'request.course.fn'} && !&Apache::lonnet::symbread()) {
1.145 albertel 962: # if we are browsing we might not be able to know where we are
1.173 albertel 963: if ($Apache::lonhomework::browse ne 'F' &&
1.204 albertel 964: $env{'request.state'} ne "construct") {
1.145 albertel 965: #should know where we are, so ask
1.190 albertel 966: $request->internal_redirect('/adm/ambiguous'); return OK;
1.145 albertel 967: }
968: }
1.187 albertel 969: if (&setupheader($request)) { return OK; }
1.193 albertel 970: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
1.204 albertel 971: &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
1.145 albertel 972: my ($symb) = &Apache::lonxml::whichuser();
973: &Apache::lonxml::debug('symb is '.$symb);
1.204 albertel 974: if ($env{'request.state'} eq "construct") {
1.145 albertel 975: if ( -e $file ) {
976: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
977: ['problemmode']);
1.204 albertel 978: if (!(defined $env{'form.problemmode'})) {
1.145 albertel 979: #first visit to problem in construction space
1.204 albertel 980: $env{'form.problemmode'}='View';
1.145 albertel 981: &renderpage($request,$file);
1.204 albertel 982: } elsif ($env{'form.problemmode'} eq &mt('EditXML') ||
983: $env{'form.problemmode'} eq 'EditXML') {
1.145 albertel 984: &editxmlmode($request,$file);
1.204 albertel 985: } elsif ($env{'form.problemmode'} eq &mt('Calculate answers')) {
1.145 albertel 986: &analyze($request,$file);
987: } else {
988: &renderpage($request,$file);
989: }
990: } else {
991: # requested file doesn't exist in contruction space
992: &newproblem($request);
993: }
994: } else {
995: # just render the page normally outside of construction space
996: &Apache::lonxml::debug("not construct");
1.52 albertel 997: &renderpage($request,$file);
1.41 albertel 998: }
1.145 albertel 999: #my $td=&tv_interval($t0);
1000: #&Apache::lonxml::debug("Spent $td seconds processing");
1001: # always turn off debug messages
1002: $Apache::lonxml::debug=0;
1003: return OK;
1.52 albertel 1004:
1.1 albertel 1005: }
1006:
1007: 1;
1008: __END__
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