Annotation of loncom/homework/lonhomework.pm, revision 1.281
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.281 ! albertel 4: # $Id: lonhomework.pm,v 1.280 2007/10/31 01:37:52 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:
1.276 foxr 66: =pod
67:
68: =item set_bubble_lines()
69:
70: Called at analysis time to set the bubble lines
71: hash for the problem.. This should be called in the
72: end_problemtype tag in analysis mode.
73:
74: We fetch the hash of part id counters from lonxml
75: and push them into analyze:{part_id.bubble_lines}.
76:
77: =cut
78:
79: sub set_bubble_lines {
80: my %bubble_counters = &Apache::lonxml::get_bubble_line_hash();
81:
82: foreach my $key (keys(%bubble_counters)) {
83: $Apache::lonhomework::analyze{"$key.bubble_lines"} =
84: $bubble_counters{"$key"};
85: }
86: }
87:
1.188 foxr 88: #
1.189 albertel 89: # Decides what targets to render for.
1.188 foxr 90: # Implicit inputs:
91: # Various session environment variables:
1.189 albertel 92: # request.state - published - is a /res/ resource
93: # uploaded - is a /uploaded/ resource
94: # contruct - is a /priv/ resource
95: # form.grade_target - a form parameter requesting a specific target
1.5 albertel 96: sub get_target {
1.204 albertel 97: &Apache::lonxml::debug("request.state = $env{'request.state'}");
98: if( defined($env{'form.grade_target'})) {
99: &Apache::lonxml::debug("form.grade_target= $env{'form.grade_target'}");
1.188 foxr 100: } else {
1.189 albertel 101: &Apache::lonxml::debug("form.grade_target <undefined>");
1.188 foxr 102: }
1.204 albertel 103: if (($env{'request.state'} eq "published") ||
104: ($env{'request.state'} eq "uploaded")) {
105: if ( defined($env{'form.grade_target'} )
106: && ($env{'form.grade_target'} eq 'tex')) {
107: return ($env{'form.grade_target'});
108: } elsif ( defined($env{'form.grade_target'} )
1.145 albertel 109: && ($Apache::lonhomework::viewgrades eq 'F' )) {
1.207 albertel 110: return ($env{'form.grade_target'});
1.244 albertel 111: } elsif ( $env{'form.grade_target'} eq 'webgrade'
112: && ($Apache::lonhomework::queuegrade eq 'F' )) {
113: return ($env{'form.grade_target'});
1.207 albertel 114: }
115: if ($env{'form.webgrade'} &&
1.244 albertel 116: ($Apache::lonhomework::modifygrades eq 'F'
117: || $Apache::lonhomework::queuegrade eq 'F' )) {
1.207 albertel 118: return ('grade','webgrade');
1.145 albertel 119: }
1.204 albertel 120: if ( defined($env{'form.submitted'}) &&
121: ( !defined($env{'form.newrandomization'}))) {
1.217 albertel 122: return ('grade', 'web');
1.145 albertel 123: } else {
1.217 albertel 124: return ('web');
1.145 albertel 125: }
1.204 albertel 126: } elsif ($env{'request.state'} eq "construct") {
127: if ( defined($env{'form.grade_target'}) ) {
128: return ($env{'form.grade_target'});
1.145 albertel 129: }
1.204 albertel 130: if ( defined($env{'form.preview'})) {
131: if ( defined($env{'form.submitted'})) {
1.145 albertel 132: return ('grade', 'web');
133: } else {
134: return ('web');
135: }
136: } else {
1.267 albertel 137: if ($env{'form.problemstate'} eq 'WEB_GRADE') {
138: #$env{'form.webgrade'} = 'yes';
139: return ('grade','webgrade','answer');
140: } elsif ( $env{'form.problemmode'} eq &mt('View') ||
1.204 albertel 141: $env{'form.problemmode'} eq &mt('Discard Edits and View')) {
142: if ( defined($env{'form.submitted'}) &&
143: (!defined($env{'form.resetdata'})) &&
144: (!defined($env{'form.newrandomization'}))) {
1.145 albertel 145: return ('grade', 'web','answer');
146: } else {
147: return ('web','answer');
148: }
1.204 albertel 149: } elsif ( $env{'form.problemmode'} eq &mt('Edit') ||
150: $env{'form.problemmode'} eq 'Edit') {
151: if ( $env{'form.submitted'} eq 'edit' ) {
1.281 ! albertel 152: if ( $env{'form.submit'} eq &mt('Save and View') ) {
1.145 albertel 153: return ('modified','web','answer');
154: } else {
1.211 albertel 155: return ('modified','no_output_web','edit');
1.145 albertel 156: }
157: } else {
1.211 albertel 158: return ('no_output_web','edit');
1.145 albertel 159: }
160: } else {
161: return ('web');
162: }
163: }
1.15 albertel 164: }
1.145 albertel 165: return ();
1.5 albertel 166: }
167:
1.3 albertel 168: sub setup_vars {
1.145 albertel 169: my ($target) = @_;
170: return ';'
1.11 albertel 171: # return ';$external::target='.$target.';';
1.2 albertel 172: }
173:
1.36 albertel 174: sub createmenu {
1.145 albertel 175: my ($which,$request)=@_;
176: if ($which eq 'grade') {
177: $request->print('<script language="JavaScript">
1.91 albertel 178: hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
1.52 albertel 179: "height=350,width=150,menubar=no");
180: </script>');
1.145 albertel 181: }
1.36 albertel 182: }
183:
1.200 albertel 184: sub proctor_checked_in {
1.226 albertel 185: my ($slot_name,$slot,$type)=@_;
186: my @possible_proctors=split(",",$slot->{'proctor'});
187:
1.248 albertel 188: return 1 if (!@possible_proctors);
189:
1.226 albertel 190: my $key;
191: if ($type eq 'Task') {
1.230 albertel 192: my $version=$Apache::lonhomework::history{'resource.0.version'};
193: $key ="resource.$version.0.checkedin";
1.226 albertel 194: } elsif ($type eq 'problem') {
195: $key ='resource.0.checkedin';
196: }
1.249 albertel 197: # backward compatability, used to be username@domain,
198: # now is username:domain
199: my $who = $Apache::lonhomework::history{$key};
200: if ($who !~ /:/) {
201: $who =~ tr/@/:/;
202: }
1.226 albertel 203: foreach my $possible (@possible_proctors) {
1.249 albertel 204: if ($who eq $possible
1.226 albertel 205: && $Apache::lonhomework::history{$key.'.slot'} eq $slot_name) {
1.202 albertel 206: return 1;
207: }
208: }
1.226 albertel 209:
1.200 albertel 210: return 0;
211: }
212:
1.152 albertel 213: sub check_ip_acc {
214: my ($acc)=@_;
1.218 albertel 215: &Apache::lonxml::debug("acc is $acc");
216: if (!defined($acc) || $acc =~ /^\s*$/ || $acc =~/^\s*no\s*$/i) {
217: return 1;
218: }
1.152 albertel 219: my $allowed=0;
1.272 albertel 220: my $ip=$env{'request.host'} || $ENV{'REMOTE_ADDR'};
221:
1.152 albertel 222: my $name;
223: foreach my $pattern (split(',',$acc)) {
1.233 albertel 224: $pattern =~ s/^\s*//;
225: $pattern =~ s/\s*$//;
1.152 albertel 226: if ($pattern =~ /\*$/) {
227: #35.8.*
228: $pattern=~s/\*//;
229: if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
230: } elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) {
231: #35.8.3.[34-56]
232: my $low=$2;
233: my $high=$3;
234: $pattern=$1;
235: if ($ip =~ /^\Q$pattern\E/) {
236: my $last=(split(/\./,$ip))[3];
237: if ($last <=$high && $last >=$low) { $allowed=1; }
238: }
239: } elsif ($pattern =~ /^\*/) {
240: #*.msu.edu
241: $pattern=~s/\*//;
242: if (!defined($name)) {
243: use Socket;
244: my $netaddr=inet_aton($ip);
245: ($name)=gethostbyaddr($netaddr,AF_INET);
1.158 albertel 246: }
1.152 albertel 247: if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
248: } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
249: #127.0.0.1
250: if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
251: } else {
252: #some.name.com
253: if (!defined($name)) {
254: use Socket;
255: my $netaddr=inet_aton($ip);
256: ($name)=gethostbyaddr($netaddr,AF_INET);
257: }
258: if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
259: }
260: if ($allowed) { last; }
261: }
262: return $allowed;
263: }
1.198 albertel 264:
1.226 albertel 265: sub check_slot_access {
266: my ($id,$type)=@_;
267:
1.207 albertel 268: # does it pass normal muster
1.226 albertel 269: my ($status,$datemsg)=&check_access($id);
270:
1.252 albertel 271: my $useslots = &Apache::lonnet::EXT("resource.0.useslots");
1.251 albertel 272: if ($useslots ne 'resource' && $useslots ne 'map'
273: && $useslots ne 'map_map') {
1.226 albertel 274: return ($status,$datemsg);
275: }
276:
1.200 albertel 277: if ($status eq 'SHOW_ANSWER' ||
278: $status eq 'CLOSED' ||
279: $status eq 'INVALID_ACCESS' ||
280: $status eq 'UNAVAILABLE') {
281: return ($status,$datemsg);
282: }
1.204 albertel 283: if ($env{'request.state'} eq "construct") {
1.203 albertel 284: return ($status,$datemsg);
285: }
1.226 albertel 286:
287: if ($type eq 'Task') {
288: my $version=$Apache::lonhomework::history{'resource.version'};
1.230 albertel 289: if ($Apache::lonhomework::history{"resource.$version.0.checkedin"} &&
290: $Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass') {
1.226 albertel 291: return ('SHOW_ANSWER');
292: }
1.207 albertel 293: }
1.226 albertel 294:
1.210 albertel 295: my @slots=
1.252 albertel 296: (split(':',&Apache::lonnet::EXT("resource.0.availablestudent")),
297: split(':',&Apache::lonnet::EXT("resource.0.available")));
1.210 albertel 298:
1.200 albertel 299: # if (!@slots) {
300: # return ($status,$datemsg);
301: # }
302: my $slotstatus='NOT_IN_A_SLOT';
1.206 albertel 303: my ($returned_slot,$slot_name);
1.210 albertel 304: foreach my $slot (@slots) {
1.241 albertel 305: $slot =~ s/(^\s*|\s*$)//g;
1.201 albertel 306: &Apache::lonxml::debug("getting $slot");
1.200 albertel 307: my %slot=&Apache::lonnet::get_slot($slot);
1.201 albertel 308: &Apache::lonhomework::showhash(%slot);
1.200 albertel 309: if ($slot{'starttime'} < time &&
310: $slot{'endtime'} > time &&
1.201 albertel 311: &check_ip_acc($slot{'ip'})) {
1.202 albertel 312: &Apache::lonxml::debug("$slot is good");
313: $slotstatus='NEEDS_CHECKIN';
314: $returned_slot=\%slot;
1.206 albertel 315: $slot_name=$slot;
1.200 albertel 316: last;
317: }
318: }
1.202 albertel 319: if ($slotstatus eq 'NEEDS_CHECKIN' &&
1.226 albertel 320: &proctor_checked_in($slot_name,$returned_slot,$type)) {
1.202 albertel 321: &Apache::lonxml::debug("protoctor checked in");
1.200 albertel 322: $slotstatus='CAN_ANSWER';
323: }
1.226 albertel 324:
1.235 albertel 325: my ($is_correct,$got_grade,$checkedin);
1.226 albertel 326: if ($type eq 'Task') {
1.230 albertel 327: my $version=$Apache::lonhomework::history{'resource.0.version'};
1.231 albertel 328: $got_grade =
329: ($Apache::lonhomework::history{"resource.$version.0.status"}
330: =~ /^(?:pass|fail)$/);
1.235 albertel 331: $is_correct =
332: ($Apache::lonhomework::history{"resource.$version.0.status"} eq 'pass'
333: || $Apache::lonhomework::history{"resource.0.solved"} =~ /^correct_/ );
1.226 albertel 334: $checkedin =
1.230 albertel 335: $Apache::lonhomework::history{"resource.$version.0.checkedin"};
1.226 albertel 336: } elsif ($type eq 'problem') {
1.252 albertel 337: $got_grade = 1;
338: $checkedin = $Apache::lonhomework::history{"resource.0.checkedin"};
339: $is_correct =
340: ($Apache::lonhomework::history{"resource.0.solved"} =~/^correct_/);
1.226 albertel 341: }
342:
1.235 albertel 343: &Apache::lonxml::debug(" slot is $slotstatus checkedin ($checkedin) got_grade ($got_grade) is_correct ($is_correct)");
344:
1.243 albertel 345: # no slot is currently open, and has been checked in for this version
346: # but hasn't got a grade, therefore must be awaiting a grade
347: if (!defined($slot_name)
348: && $checkedin
1.236 albertel 349: && !$got_grade) {
350: return ('WAITING_FOR_GRADE');
351: }
352:
1.252 albertel 353: # no slot is currently open, and has been checked in for this version
354: # previous slot is therefore CLOSED, so therefore the problem is
355: if (!defined($slot_name)
356: && $checkedin
357: && $type eq 'problem') {
358: return ('CLOSED',$datemsg);
359: }
360:
1.226 albertel 361: if ($slotstatus eq 'NOT_IN_A_SLOT'
362: && $checkedin ) {
363:
1.231 albertel 364: if ($got_grade) {
1.209 albertel 365: return ('SHOW_ANSWER');
366: } else {
367: return ('WAITING_FOR_GRADE');
368: }
1.226 albertel 369:
1.207 albertel 370: }
1.255 albertel 371:
1.235 albertel 372: if ( $is_correct) {
1.255 albertel 373: if ($type eq 'problem') {
374: return ($status);
375: }
1.235 albertel 376: return ('SHOW_ANSWER');
377: }
1.255 albertel 378:
1.225 albertel 379: if ( $status eq 'CANNOT_ANSWER' &&
380: ($slotstatus ne 'NEEDS_CHECKIN' && $slotstatus ne 'NOT_IN_A_SLOT')) {
381: return ($status,$datemsg);
382: }
383:
1.206 albertel 384: return ($slotstatus,$datemsg,$slot_name,$returned_slot);
1.198 albertel 385: }
1.200 albertel 386:
1.92 bowersj2 387: # JB, 9/24/2002: Any changes in this function may require a change
388: # in lonnavmaps::resource::getDateStatus.
1.53 www 389: sub check_access {
1.145 albertel 390: my ($id) = @_;
391: my $date ='';
392: my $status;
393: my $datemsg = '';
394: my $lastdate = '';
395: my $type;
396: my $passed;
397:
1.204 albertel 398: if ($env{'request.state'} eq "construct") {
399: if ($env{'form.problemstate'}) {
400: if ($env{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
1.277 albertel 401: if ( ! ($env{'form.problemstate'} eq 'CANNOT_ANSWER_correct'
402: && &hide_problem_status())) {
1.168 albertel 403: return ('CANNOT_ANSWER',
1.174 www 404: &mt('is in this state due to author settings.'));
1.167 albertel 405: }
1.165 albertel 406: } else {
1.204 albertel 407: return ($env{'form.problemstate'},
1.174 www 408: &mt('is in this state due to author settings.'));
1.165 albertel 409: }
410: }
1.145 albertel 411: &Apache::lonxml::debug("in construction ignoring dates");
412: $status='CAN_ANSWER';
1.146 albertel 413: $datemsg=&mt('is in under construction');
1.163 albertel 414: # return ($status,$datemsg);
1.145 albertel 415: }
416:
417: &Apache::lonxml::debug("checking for part :$id:");
418: &Apache::lonxml::debug("time:".time);
1.152 albertel 419:
1.261 albertel 420: my ($symb)=&Apache::lonnet::whichuser();
1.212 albertel 421: &Apache::lonxml::debug("symb:".$symb);
422: #if ($env{'request.state'} ne "construct" && $symb ne '') {
1.204 albertel 423: if ($env{'request.state'} ne "construct") {
1.163 albertel 424: my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));
425: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
426: $status='INVALID_ACCESS';
427: $date=&mt("can not be accessed from your location.");
1.145 albertel 428: return($status,$date);
429: }
1.163 albertel 430:
1.226 albertel 431: foreach my $temp ("opendate","duedate","answerdate") {
1.163 albertel 432: $lastdate = $date;
1.247 albertel 433: if ($temp eq 'duedate') {
434: $date = &due_date($id);
435: } else {
436: $date = &Apache::lonnet::EXT("resource.$id.$temp");
437: }
438:
1.163 albertel 439: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
440: if ($thistype =~ /^(con_lost|no_such_host)/ ||
441: $date =~ /^(con_lost|no_such_host)/) {
442: $status='UNAVAILABLE';
443: $date=&mt("may open later.");
444: return($status,$date);
445: }
446: if ($thistype eq 'date_interval') {
447: if ($temp eq 'opendate') {
448: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
449: }
450: if ($temp eq 'answerdate') {
451: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
452: }
1.145 albertel 453: }
1.163 albertel 454: &Apache::lonxml::debug("found :$date: for :$temp:");
455: if ($date eq '') {
456: $date = &mt("an unknown date"); $passed = 0;
457: } elsif ($date eq 'con_lost') {
458: $date = &mt("an indeterminate date"); $passed = 0;
459: } else {
460: if (time < $date) { $passed = 0; } else { $passed = 1; }
1.274 www 461: $date = &Apache::lonlocal::locallocaltime($date);
1.145 albertel 462: }
1.163 albertel 463: if (!$passed) { $type=$temp; last; }
1.145 albertel 464: }
1.163 albertel 465: &Apache::lonxml::debug("have :$type:$passed:");
466: if ($passed) {
467: $status='SHOW_ANSWER';
468: $datemsg=$date;
469: } elsif ($type eq 'opendate') {
470: $status='CLOSED';
471: $datemsg = &mt("will open on")." $date";
472: } elsif ($type eq 'duedate') {
473: $status='CAN_ANSWER';
474: $datemsg = &mt("is due at")." $date";
475: } elsif ($type eq 'answerdate') {
476: $status='CLOSED';
477: $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
1.145 albertel 478: }
479: }
1.212 albertel 480: if ($status eq 'CAN_ANSWER' ||
481: (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED'))) {
1.145 albertel 482: #check #tries, and if correct.
483: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
484: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
485: if ( $tries eq '' ) { $tries = '0'; }
1.164 albertel 486: if ( $maxtries eq '' &&
1.204 albertel 487: $env{'request.state'} ne 'construct') { $maxtries = '2'; }
1.164 albertel 488: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
1.145 albertel 489: # if (correct and show prob status) or excused then CANNOT_ANSWER
490: if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
491: &&
1.277 albertel 492: &show_problem_status())
1.145 albertel 493: ||
494: $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
495: $status = 'CANNOT_ANSWER';
496: }
1.121 albertel 497: }
1.181 albertel 498: if ($status eq 'CAN_ANSWER' || $status eq 'CANNOT_ANSWER') {
1.177 albertel 499: my $interval=&Apache::lonnet::EXT("resource.$id.interval");
500: &Apache::lonxml::debug("looking for interval $interval");
501: if ($interval) {
502: my $first_access=&Apache::lonnet::get_first_access('map');
503: &Apache::lonxml::debug("looking for accesstime $first_access");
504: if (!$first_access) {
505: $status='NOT_YET_VIEWED';
1.247 albertel 506: my $due_date = &due_date($id);
1.256 albertel 507: my $seconds_left = $due_date - time;
508: if ($seconds_left > $interval || $due_date eq '') {
509: $seconds_left = $interval;
510: }
511: $datemsg=&seconds_to_human_length($seconds_left);
1.177 albertel 512: }
513: }
514: }
1.247 albertel 515:
1.133 albertel 516: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
517: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
518: # return ('UNCHECKEDOUT','needs to be checked out');
519: #}
1.54 www 520:
521:
1.145 albertel 522: &Apache::lonxml::debug("sending back :$status:$datemsg:");
523: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
524: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
525: $status='CAN_ANSWER';
1.146 albertel 526: $datemsg=&mt('is closed but you are allowed to view it');
1.145 albertel 527: }
1.106 albertel 528:
1.145 albertel 529: return ($status,$datemsg);
1.20 albertel 530: }
1.247 albertel 531: # this should work exactly like the copy in lonnavmaps.pm
1.246 albertel 532: sub due_date {
1.250 albertel 533: my ($part_id,$symb,$udom,$uname)=@_;
1.246 albertel 534: my $date;
1.250 albertel 535: my $interval= &Apache::lonnet::EXT("resource.$part_id.interval",$symb,
536: $udom,$uname);
1.247 albertel 537: &Apache::lonxml::debug("looking for interval $part_id $symb $interval");
1.250 albertel 538: my $due_date= &Apache::lonnet::EXT("resource.$part_id.duedate",$symb,
539: $udom,$uname);
1.247 albertel 540: &Apache::lonxml::debug("looking for due_date $part_id $symb $due_date");
1.257 albertel 541: if ($interval =~ /\d+/) {
1.246 albertel 542: my $first_access=&Apache::lonnet::get_first_access('map',$symb);
1.257 albertel 543: &Apache::lonxml::debug("looking for first_access $first_access");
1.247 albertel 544: if (defined($first_access)) {
545: $interval = $first_access+$interval;
546: $date = ($interval < $due_date)? $interval : $due_date;
547: } else {
548: $date = $due_date;
549: }
550: } else {
551: $date = $due_date;
1.246 albertel 552: }
553: return $date
554: }
555:
1.192 albertel 556: sub seconds_to_human_length {
557: my ($length)=@_;
558:
559: my $seconds=$length%60; $length=int($length/60);
560: my $minutes=$length%60; $length=int($length/60);
561: my $hours=$length%24; $length=int($length/24);
562: my $days=$length;
563:
564: my $timestr;
565: if ($days > 0) { $timestr.=&mt('[quant,_1,day]',$days); }
566: if ($hours > 0) { $timestr.=($timestr?", ":"").
567: &mt('[quant,_1,hour]',$hours); }
568: if ($minutes > 0) { $timestr.=($timestr?", ":"").
569: &mt('[quant,_1,minute]',$minutes); }
570: if ($seconds > 0) { $timestr.=($timestr?", ":"").
571: &mt('[quant,_1,second]',$seconds); }
572: return $timestr;
573: }
574:
1.41 albertel 575: sub showhash {
1.145 albertel 576: my (%hash) = @_;
577: &showhashsubset(\%hash,'.');
578: return '';
1.79 albertel 579: }
580:
1.106 albertel 581: sub showarray {
582: my ($array)=@_;
583: my $string="(";
584: foreach my $elm (@{ $array }) {
1.193 albertel 585: if (ref($elm) eq 'ARRAY') {
586: $string.=&showarray($elm);
587: } elsif (ref($elm) eq 'HASH') {
588: $string.= "HASH --- \n<br />";
589: $string.= &showhashsubset($elm,'.');
1.106 albertel 590: } else {
591: $string.="$elm,"
592: }
593: }
594: chop($string);
595: $string.=")";
596: return $string;
597: }
598:
1.79 albertel 599: sub showhashsubset {
1.145 albertel 600: my ($hash,$keyre) = @_;
601: my $resultkey;
602: foreach $resultkey (sort keys %$hash) {
1.193 albertel 603: if ($resultkey !~ /$keyre/) { next; }
604: if (ref($$hash{$resultkey}) eq 'ARRAY' ) {
605: &Apache::lonxml::debug("$resultkey ---- ".
606: &showarray($$hash{$resultkey}));
607: } elsif (ref($$hash{$resultkey}) eq 'HASH' ) {
608: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
609: &showhashsubset($$hash{$resultkey},'.');
610: } else {
611: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.145 albertel 612: }
613: }
614: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
615: return '';
1.41 albertel 616: }
617:
618: sub setuppermissions {
1.204 albertel 619: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$env{'request.filename'});
620: my $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
1.145 albertel 621: if (! $viewgrades &&
1.204 albertel 622: exists($env{'request.course.sec'}) &&
623: $env{'request.course.sec'} !~ /^\s*$/) {
624: $viewgrades = &Apache::lonnet::allowed('vgr',$env{'request.course.id'}.
625: '/'.$env{'request.course.sec'});
1.145 albertel 626: }
1.244 albertel 627: $Apache::lonhomework::viewgrades = $viewgrades;
628:
1.185 albertel 629: if ($Apache::lonhomework::browse eq 'F' &&
1.204 albertel 630: $env{'form.devalidatecourseresdata'} eq 'on') {
1.261 albertel 631: my (undef,$courseid) = &Apache::lonnet::whichuser();
1.204 albertel 632: &Apache::lonnet::devalidatecourseresdata($env{"course.$courseid.num"},
633: $env{"course.$courseid.domain"});
1.185 albertel 634: }
1.244 albertel 635:
1.205 albertel 636: my $modifygrades = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
637: if (! $modifygrades &&
638: exists($env{'request.course.sec'}) &&
639: $env{'request.course.sec'} !~ /^\s*$/) {
640: $modifygrades =
641: &Apache::lonnet::allowed('mgr',$env{'request.course.id'}.
642: '/'.$env{'request.course.sec'});
643: }
644: $Apache::lonhomework::modifygrades = $modifygrades;
1.244 albertel 645:
646: my $queuegrade = &Apache::lonnet::allowed('mqg',$env{'request.course.id'});
647: if (! $queuegrade &&
648: exists($env{'request.course.sec'}) &&
649: $env{'request.course.sec'} !~ /^\s*$/) {
650: $queuegrade =
651: &Apache::lonnet::allowed('qgr',$env{'request.course.id'}.
652: '/'.$env{'request.course.sec'});
653: }
654: $Apache::lonhomework::queuegrade = $queuegrade;
1.205 albertel 655: return '';
1.41 albertel 656: }
657:
1.253 albertel 658: sub unset_permissions {
659: undef($Apache::lonhomework::queuegrade);
660: undef($Apache::lonhomework::modifygrades);
661: undef($Apache::lonhomework::viewgrades);
662: undef($Apache::lonhomework::browse);
663: }
664:
1.41 albertel 665: sub setupheader {
1.120 albertel 666: my $request=$_[0];
1.197 albertel 667: &Apache::loncommon::content_type($request,'text/html');
1.120 albertel 668: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
669: &Apache::loncommon::no_cache($request);
670: }
1.196 albertel 671: # $request->set_last_modified(&Apache::lonnet::metadata($request->uri,
672: # 'lastrevisiondate'));
1.120 albertel 673: $request->send_http_header;
674: return OK if $request->header_only;
675: return ''
1.41 albertel 676: }
1.35 albertel 677:
1.47 albertel 678: sub handle_save_or_undo {
1.145 albertel 679: my ($request,$problem,$result) = @_;
680: my $file = &Apache::lonnet::filelocation("",$request->uri);
681: my $filebak =$file.".bak";
682: my $filetmp =$file.".tmp";
683: my $error=0;
1.204 albertel 684: if ($env{'form.Undo'} eq &mt('undo')) {
1.145 albertel 685: my $error=0;
686: if (!copy($file,$filetmp)) { $error=1; }
687: if ((!$error) && (!copy($filebak,$file))) { $error=1; }
688: if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
689: if (!$error) {
1.266 albertel 690: &Apache::lonxml::info("<p><b>".
691: &mt("Undid changes, Switched [_1] and [_2]",
692: '<span class="LC_filename">'.$filebak.
693: '</span>',
694: '<span class="LC_filename">'.$file.
695: '</span>')."</b></p>");
1.145 albertel 696: } else {
1.266 albertel 697: &Apache::lonxml::info("<p><span class=\"LC_error\">".
698: &mt("Unable to undo, unable to switch [_1] and [_2]",
699: '<span class="LC_filename">'.
700: $filebak.'</span>',
701: '<span class="LC_filename">'.
702: $file.'</span>')."</span></p>");
1.145 albertel 703: $error=1;
704: }
1.52 albertel 705: } else {
1.262 banghart 706: &Apache::lonnet::correct_line_ends($result);
1.145 albertel 707: my $fs=Apache::File->new(">$filebak");
708: if (defined($fs)) {
709: print $fs $$problem;
1.266 albertel 710: &Apache::lonxml::info("<b>".&mt("Making Backup to [_1]",
711: '<span class="LC_filename">'.
712: $filebak.'</span>').
713: "</b>");
1.145 albertel 714: } else {
1.266 albertel 715: &Apache::lonxml::info("<span class=\"LC_error\">".
716: &mt("Unable to make backup [_1]",
717: '<span class="LC_filename">'.
718: $filebak.'</span>')."</span>");
1.145 albertel 719: $error=2;
720: }
721: my $fh=Apache::File->new(">$file");
722: if (defined($fh)) {
723: print $fh $$result;
1.266 albertel 724: &Apache::lonxml::info("<b>".&mt("Saving Modifications to [_1]",
725: '<span class="LC_filename">'.
726: $file.'</span>' )."</b>");
1.145 albertel 727: } else {
1.266 albertel 728: &Apache::lonxml::info('<span class="LC_error">'.
729: &mt("Unable to write to [_1]",
730: '<span class="LC_filename">'.
731: $file.'</span>').
732: '</span>');
1.145 albertel 733: $error|=4;
734: }
1.52 albertel 735: }
1.145 albertel 736: return $error;
1.64 albertel 737: }
738:
1.101 albertel 739: sub analyze_header {
740: my ($request) = @_;
1.238 albertel 741: my $result =
1.240 albertel 742: &Apache::loncommon::start_page('Analyzing a problem',undef);
743:
1.238 albertel 744: $result .=
745: &Apache::lonxml::message_location().'
1.101 albertel 746: <form name="lonhomework" method="POST" action="'.
1.204 albertel 747: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.179 albertel 748: &Apache::structuretags::remember_problem_state().'
1.278 albertel 749: <div class="LC_edit_problem_analyze_header">
1.146 albertel 750: <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
751: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.278 albertel 752: <hr class="LC_edit_problem_divide" />
753:
1.146 albertel 754: <input type="submit" name="submit" value="'.&mt("View").'" />
1.278 albertel 755: <hr class="LC_edit_problem_divide" />
756: </div>
1.101 albertel 757: </form>';
1.171 albertel 758: &Apache::lonxml::add_messages(\$result);
1.101 albertel 759: $request->print($result);
760: $request->rflush();
761: }
762:
1.109 albertel 763: sub analyze_footer {
764: my ($request) = @_;
1.237 albertel 765: $request->print(&Apache::loncommon::end_page());
1.109 albertel 766: $request->rflush();
767: }
768:
1.74 albertel 769: sub analyze {
1.101 albertel 770: my ($request,$file) = @_;
771: &Apache::lonxml::debug("Analyze");
772: my $result;
773: my %overall;
1.219 www 774: my %seedexample;
1.101 albertel 775: my %allparts;
1.204 albertel 776: my $rndseed=$env{'form.rndseed'};
1.101 albertel 777: &analyze_header($request);
1.114 albertel 778: my %prog_state=
1.146 albertel 779: &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
780: &mt('Getting Problem Variants'),
1.204 albertel 781: $env{'form.numtoanalyze'},
1.175 albertel 782: 'inline',undef);
1.204 albertel 783: for(my $i=1;$i<$env{'form.numtoanalyze'}+1;$i++) {
1.114 albertel 784: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
1.146 albertel 785: &mt('last problem'));
1.182 albertel 786: if (&Apache::loncommon::connection_aborted($request)) { return; }
1.219 www 787: my $thisseed=$i+$rndseed;
1.101 albertel 788: my $subresult=&Apache::lonnet::ssi($request->uri,
789: ('grade_target' => 'analyze'),
1.219 www 790: ('rndseed' => $thisseed));
1.101 albertel 791: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
792: my %analyze=&Apache::lonnet::str2hash($subresult);
1.114 albertel 793: my @parts;
794: if (defined(@{ $analyze{'parts'} })) {
795: @parts=@{ $analyze{'parts'} };
796: }
1.101 albertel 797: foreach my $part (@parts) {
798: if (!exists($allparts{$part})) {$allparts{$part}=1;};
1.109 albertel 799: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
800: $analyze{$part.'.type'} eq 'stringresponse' ||
801: $analyze{$part.'.type'} eq 'formularesponse' ) {
1.263 albertel 802: foreach my $name (keys(%{ $analyze{$part.'.answer'} })) {
803: my $i=0;
804: foreach my $answer_part (@{ $analyze{$part.'.answer'}{$name} }) {
805: push( @{ $overall{$part.'.answer'}[$i] },
806: $answer_part);
807: my $concatanswer= join("\0",@{ $answer_part });
808: if (($concatanswer eq '') || ($concatanswer=~/^\@/)) {
1.266 albertel 809: $answer_part = ['<span class="LC_error">'.&mt('Error').'</span>'];
1.263 albertel 810: }
811: $seedexample{join("\0",$part,$i,@{$answer_part})}=
812: $thisseed;
813: $i++;
814: }
1.219 www 815: }
1.275 albertel 816: if (!keys(%{ $analyze{$part.'.answer'} })) {
817: my $answer_part =
818: ['<span class="LC_error">'.&mt('Error').'</span>'];
819: $seedexample{join("\0",$part,0,@{$answer_part})}=
820: $thisseed;
821: push( @{ $overall{$part.'.answer'}[0] },
822: $answer_part);
823: }
1.101 albertel 824: }
825: }
826: }
1.114 albertel 827: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
1.146 albertel 828: &mt('Analyzing Results'));
1.278 albertel 829: $request->print('<hr class="LC_edit_problem_divide" />'.&mt('List of possible answers').': ');
1.134 albertel 830: foreach my $part (sort(keys(%allparts))) {
1.109 albertel 831: if (defined(@{ $overall{$part.'.answer'} })) {
1.263 albertel 832: for (my $i=0;$i<scalar(@{ $overall{$part.'.answer'} });$i++) {
833: my $num_cols=scalar(@{ $overall{$part.'.answer'}[$i][0] });
834: $request->print('<table class="thinborder"><tr><th colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part);
835: if (scalar(@{ $overall{$part.'.answer'} }) > 1) {
836: $request->print(&mt(' Answer [_1]',$i+1));
837: }
838: $request->print('</th></tr>');
839: my %frequency;
840: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'}[$i] })) {
841: $frequency{join("\0",@{ $answer })}++;
842: }
843: $request->print('<tr><th colspan="'.($num_cols).'">'.&mt('Answer').'</th><th>'.&mt('Frequency').'<br />('
844: .&mt('click for example').')</th></tr>');
845: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
846: $request->print('<tr><td class="center">'.
847: join('</td><td class="center">',split("\0",$answer)).
848: '</td><td class="center"><a href="'.$request->uri.'?rndseed='.$seedexample{join("\0",$part,$i,$answer)}.'">'.$frequency{$answer}.
849: '</a></td></tr>');
850: }
851: $request->print('</table>');
1.109 albertel 852: }
853: } else {
1.162 albertel 854: $request->print('<p>'.&mt('Response').' '.$part.' '.
1.146 albertel 855: &mt('is not analyzable at this time').'</p>');
1.101 albertel 856: }
857: }
1.130 albertel 858: if (scalar(keys(%allparts)) == 0 ) {
1.215 raeburn 859: $request->print('<p>'.&mt('Found no analyzable responses in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
1.130 albertel 860: }
1.114 albertel 861: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1.109 albertel 862: &analyze_footer($request);
1.101 albertel 863: &Apache::lonhomework::showhash(%overall);
864: return $result;
1.74 albertel 865: }
866:
1.277 albertel 867: {
868: my $show_problem_status;
869: sub reset_show_problem_status {
870: undef($show_problem_status);
871: }
872:
873: sub set_show_problem_status {
874: my ($new_status) = @_;
875: $show_problem_status = lc($new_status);
876: }
877:
878: sub hide_problem_status {
879: return ($show_problem_status eq 'no'
880: || $show_problem_status eq 'no_feedback_ever');
881: }
882:
883: sub show_problem_status {
884: return ($show_problem_status eq 'yes'
885: || $show_problem_status eq '');
886: }
887:
888: sub show_some_problem_status {
889: return ($show_problem_status eq 'no');
890: }
891:
892: sub show_no_problem_status {
893: return ($show_problem_status eq 'no_feedback_ever');
894: }
895: }
896:
1.64 albertel 897: sub editxmlmode {
1.145 albertel 898: my ($request,$file) = @_;
899: my $result;
900: my $problem=&Apache::lonnet::getfile($file);
901: if ($problem eq -1) {
1.146 albertel 902: &Apache::lonxml::error("<b> ".&mt('Unable to find').
903: " <i>$file</i></b>");
1.145 albertel 904: $problem='';
905: }
1.204 albertel 906: if (defined($env{'form.editxmltext'}) || defined($env{'form.Undo'})) {
1.145 albertel 907: my $error=&handle_save_or_undo($request,\$problem,
1.204 albertel 908: \$env{'form.editxmltext'});
1.145 albertel 909: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
910: }
1.204 albertel 911: &Apache::lonhomework::showhashsubset(\%env,'^form');
1.281 ! albertel 912: if ( $env{'form.submit'} eq &mt('Save and View') ) {
1.204 albertel 913: &Apache::lonhomework::showhashsubset(\%env,'^form');
914: $env{'form.problemmode'}='View';
1.145 albertel 915: &renderpage($request,$file);
916: } else {
917: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1.160 www 918: my $xml_help = '<table><tr><td>'.
919: &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
920: "Problem Editing Help").
921: '</td><td>'.
1.254 albertel 922: &Apache::loncommon::help_open_menu(undef,undef,5,'Authoring').
1.178 albertel 923: '</td></tr></table>';
1.145 albertel 924: if ($cols > 80) { $cols = 80; }
925: if ($cols < 70) { $cols = 70; }
926: if ($rows < 20) { $rows = 20; }
1.269 albertel 927: my $js =
928: &Apache::edit::js_change_detection().
929: &Apache::loncommon::resize_textarea_js();
1.270 albertel 930: my $only_body = ($env{'environment.remote'} eq 'off')? 0 : 1;
1.238 albertel 931: my $start_page =
1.269 albertel 932: &Apache::loncommon::start_page(&mt("EditXML [_1]",$file),$js,
933: {'no_auto_mt_title' => 1,
1.270 albertel 934: 'only_body' => $only_body,
1.269 albertel 935: 'add_entries' => {
936: 'onresize' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
937: 'onload' => q[resize_textarea('LC_editxmltext','LC_aftertextarea')],
938: }});
1.227 albertel 939:
1.238 albertel 940: $result.=$start_page.
1.213 albertel 941: &renderpage($request,$file,['no_output_web'],1).
1.281 ! albertel 942: '<form '.&Apache::edit::form_change_detection().' name="lonhomework" method="POST" action="'.
1.204 albertel 943: &HTML::Entities::encode($env{'request.uri'},'<>&"').'">'.
1.179 albertel 944: &Apache::structuretags::remember_problem_state().'
1.278 albertel 945: <div class="LC_edit_problem_editxml_header">
1.280 albertel 946: <table class="LC_edit_problem_header_title"><tr><td>
947: '.&mt('Problem Editing').&Apache::loncommon::help_open_topic('Problem_Editor_XML_Index').'
948: </td><td align="right">
949: '.&Apache::loncommon::helpLatexCheatsheet().'
950: </td></tr>
951: </table>
952: <div class="LC_edit_problem_discards">
953: <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
954: <input type="submit" name="problemmode" accesskey="d" value="'.&mt('Discard Edits and View').'" />
955: <input type="submit" '.&Apache::edit::submit_ask_anyway().'name="problemmode" accesskey="e" value="'.&mt('Edit').'" />
956: <input type="submit" name="Undo" accesskey="u" value="'.&mt('undo').'" />
957: </div>
958: <div class="LC_edit_problem_saves">
959: <input type="submit" name="submit" accesskey="s" value="'.&mt('Save').'" />
960: <input type="submit" name="submit" accesskey="v" value="'.&mt('Save and View').'" />
961: </div>
962: <hr class="LC_edit_problem_divide" />
1.281 ! albertel 963: '.&Apache::lonxml::message_location().'
1.278 albertel 964: </div>
1.280 albertel 965: ' . '
1.269 albertel 966: <textarea '.&Apache::edit::element_change_detection().
967: ' rows="'.$rows.'" cols="'.$cols.'" style="width:100%" '.
968: ' name="editxmltext" id="LC_editxmltext">'.
969: &HTML::Entities::encode($problem,'<>&"').'</textarea>
970: <div id="LC_aftertextarea">
971: </div>
1.238 albertel 972: </form>'.&Apache::loncommon::end_page();
1.171 albertel 973: &Apache::lonxml::add_messages(\$result);
1.145 albertel 974: $request->print($result);
975: }
976: return '';
1.47 albertel 977: }
1.189 albertel 978:
1.188 foxr 979: #
980: # Render the page in whatever target desired.
981: #
1.41 albertel 982: sub renderpage {
1.213 albertel 983: my ($request,$file,$targets,$return_string) = @_;
1.52 albertel 984:
1.211 albertel 985: my @targets = @{$targets || [&get_target()]};
1.204 albertel 986: &Apache::lonhomework::showhashsubset(\%env,'form.');
1.145 albertel 987: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1.268 albertel 988:
1.171 albertel 989: my $overall_result;
1.145 albertel 990: foreach my $target (@targets) {
1.183 albertel 991: # FIXME need to do something intelligent when a problem goes
992: # from viewable to not viewable due to map conditions
993: #&setuppermissions();
994: #if ( $Apache::lonhomework::browse ne '2'
995: # && $Apache::lonhomework::browse ne 'F' ) {
996: # $request->print(" You most likely shouldn't see me.");
997: #}
1.145 albertel 998: #my $t0 = [&gettimeofday()];
1.211 albertel 999: my $output=1;
1000: if ($target eq 'no_output_web') {
1001: $target = 'web'; $output=0;
1002: }
1.145 albertel 1003: my $problem=&Apache::lonnet::getfile($file);
1.222 albertel 1004: my $result;
1.145 albertel 1005: if ($problem eq -1) {
1.260 albertel 1006: $problem='';
1.222 albertel 1007: my $filename=(split('/',$file))[-1];
1.260 albertel 1008: my $error =
1009: "<b> ".&mt('Unable to find [_1]',
1010: ' <span class="LC_filename">'.$filename.'</span>')
1011: ."</b>";
1012: $result.=
1013: &Apache::loncommon::simple_error_page($request,'Not available',
1014: $error);
1015: return;
1.145 albertel 1016: }
1.52 albertel 1017:
1.145 albertel 1018: my %mystyle;
1019: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
1020: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
1.204 albertel 1021: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%env,'^form');}
1.145 albertel 1022:
1023: &Apache::lonxml::debug("Should be parsing now");
1.222 albertel 1024: $result .= &Apache::lonxml::xmlparse($request, $target, $problem,
1025: &setup_vars($target),%mystyle);
1.273 albertel 1026: &finished_parsing();
1.214 albertel 1027: if (!$output) { $result = ''; }
1.145 albertel 1028: #$request->print("Result follows:");
1029: if ($target eq 'modified') {
1030: &handle_save_or_undo($request,\$problem,\$result);
1031: } else {
1032: if ($target eq 'analyze') {
1033: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
1034: undef(%Apache::lonhomework::analyze);
1035: }
1036: #my $td=&tv_interval($t0);
1037: #if ( $Apache::lonxml::debug) {
1038: #$result =~ s:</body>::;
1039: #$result.="<br />Spent $td seconds processing target $target\n</body>";
1040: #}
1.171 albertel 1041: # $request->print($result);
1042: $overall_result.=$result;
1043: # $request->rflush();
1.145 albertel 1044: }
1045: #$request->print(":Result ends");
1046: #my $td=&tv_interval($t0);
1.52 albertel 1047: }
1.213 albertel 1048: if (!$return_string) {
1049: &Apache::lonxml::add_messages(\$overall_result);
1050: $request->print($overall_result);
1051: $request->rflush();
1052: } else {
1053: return $overall_result;
1054: }
1.41 albertel 1055: }
1056:
1.273 albertel 1057: sub finished_parsing {
1058: undef($Apache::lonhomework::parsing_a_problem);
1059: undef($Apache::lonhomework::parsing_a_task);
1060: }
1061:
1.42 albertel 1062: # with no arg it returns a HTML <option> list of the template titles
1063: # with one arg it returns the filename associated with the arg passed
1064: sub get_template_list {
1.145 albertel 1065: my ($namewanted,$extension) = @_;
1066: my $result;
1067: my @allnames;
1068: &Apache::lonxml::debug("Looking for :$extension:");
1069: foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
1.268 albertel 1070: &Apache::lonxml::debug("Looking at $file");
1.145 albertel 1071: my $name=&Apache::lonnet::metadata($file,'title');
1.268 albertel 1072: &Apache::lonxml::debug("Got a name $name");
1.145 albertel 1073: if ($namewanted && ($name eq $namewanted)) {
1074: $result=$file;
1075: last;
1076: } else {
1077: if ($name) { push (@allnames, $name); }
1078: }
1079: }
1080: if (@allnames && !$result) {
1.146 albertel 1081: $result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".
1.145 albertel 1082: join('</option><option>',sort(@allnames)).'</option>';
1.42 albertel 1083: }
1.145 albertel 1084: return $result;
1.42 albertel 1085: }
1086:
1087: sub newproblem {
1.65 matthew 1088: my ($request) = @_;
1089: my $extension=$request->uri;
1090: $extension=~s:^.*\.([\w]+)$:$1:;
1091: &Apache::lonxml::debug("Looking for :$extension:");
1.131 albertel 1092: my $templatelist=&get_template_list('',$extension);
1.204 albertel 1093: if ($env{'form.template'} &&
1094: $env{'form.template'} ne "Select a $extension template") {
1.65 matthew 1095: use File::Copy;
1.204 albertel 1096: my $file = &get_template_list($env{'form.template'},$extension);
1.65 matthew 1097: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1098: copy($file,$dest);
1099: &renderpage($request,$dest);
1.204 albertel 1100: } elsif($env{'form.newfile'} && !$templatelist) {
1.131 albertel 1101: # I don't like hard-coded filenames but for now, this will work.
1102: use File::Copy;
1103: my $templatefilename =
1.258 albertel 1104: $request->dir_config('lonIncludes').'/templates/blank.'.$extension;
1.131 albertel 1105: &Apache::lonxml::debug("$templatefilename");
1106: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1107: copy($templatefilename,$dest);
1108: &renderpage($request,$dest);
1.85 albertel 1109: } else {
1.176 albertel 1110: my $url=&HTML::Entities::encode($request->uri,'<>&"');
1111: my $shownurl=$url;
1.157 albertel 1112: $shownurl=~s-^/~-/priv/-;
1.65 matthew 1113: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.128 albertel 1114: my $errormsg;
1.204 albertel 1115: if ($env{'form.newfile'}) {
1.266 albertel 1116: $errormsg='<p><span class="LC_error">'.&mt('You did not select a template.').'</span></p>'."\n";
1.128 albertel 1117: }
1.85 albertel 1118: my $instructions;
1.240 albertel 1119: my $start_page =
1120: &Apache::loncommon::start_page("Create New $extension");
1.258 albertel 1121: $request->print("
1.240 albertel 1122: $start_page
1.258 albertel 1123: <h1>".&mt("Creating a new $extension resource.")."</h1>
1.128 albertel 1124: $errormsg
1.258 albertel 1125: ".&mt("The requested file [_1] currently does not exist.",
1126: "<tt>$shownurl</tt>")."
1.105 www 1127: <p>
1.258 albertel 1128: <b>
1129: ".&mt("To create a new $extension, select a template from the".
1130: "pull-down menu below. Then click on the \"Create $extension\" button.")."</b>
1.259 albertel 1131: </p><form action=\"$url\" method=\"POST\">");
1.258 albertel 1132:
1.85 albertel 1133: if (defined($templatelist)) {
1134: $request->print("<select name=\"template\">$templatelist</select>");
1135: }
1.146 albertel 1136: $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />");
1.238 albertel 1137: $request->print("</form></p>".&Apache::loncommon::end_page());
1.65 matthew 1138: }
1139: return '';
1.42 albertel 1140: }
1141:
1.268 albertel 1142: sub update_construct_style {
1143: if ($env{'request.state'} eq "construct"
1144: && $env{'form.problemmode'} eq &mt('View')
1145: && defined($env{'form.submitted'})
1146: && !defined($env{'form.resetdata'})
1147: && !defined($env{'form.newrandomization'})) {
1148: if ((!$env{'form.style_file'} && $env{'construct.style'})
1149: ||$env{'form.clear_style_file'}) {
1150: &Apache::lonnet::delenv('construct\\.style');
1151: } elsif ($env{'form.style_file'}
1152: && $env{'construct.style'} ne $env{'form.style_file'}) {
1153: &Apache::lonnet::appenv('construct.style' =>
1154: $env{'form.style_file'});
1155: }
1156: }
1157: }
1158:
1159:
1.41 albertel 1160: sub handler {
1.145 albertel 1161: #my $t0 = [&gettimeofday()];
1162: my $request=$_[0];
1.223 albertel 1163: $Apache::lonxml::request=$request;
1.204 albertel 1164: $Apache::lonxml::debug=$env{'user.debug'};
1165: $env{'request.uri'}=$request->uri;
1.180 albertel 1166: &setuppermissions();
1.145 albertel 1167: # some times multiple problemmodes are submitted, need to select
1168: # the last one
1.204 albertel 1169: if ( defined($env{'form.problemmode'}) && ref($env{'form.problemmode'}) ) {
1170: my $mode=$env{'form.problemmode'}->[-1];
1171: undef $env{'form.problemmode'};
1172: $env{'form.problemmode'}=$mode;
1.145 albertel 1173: }
1.193 albertel 1174:
1.145 albertel 1175: my $file=&Apache::lonnet::filelocation("",$request->uri);
1176:
1177: #check if we know where we are
1.204 albertel 1178: if ($env{'request.course.fn'} && !&Apache::lonnet::symbread()) {
1.145 albertel 1179: # if we are browsing we might not be able to know where we are
1.173 albertel 1180: if ($Apache::lonhomework::browse ne 'F' &&
1.204 albertel 1181: $env{'request.state'} ne "construct") {
1.145 albertel 1182: #should know where we are, so ask
1.253 albertel 1183: &unset_permissions();
1184: $request->internal_redirect('/adm/ambiguous');
1185: return OK;
1.145 albertel 1186: }
1187: }
1.253 albertel 1188: if (&setupheader($request)) {
1189: &unset_permissions();
1190: return OK;
1191: }
1.244 albertel 1192: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:$Apache::lonhomework::modifygrades:$Apache::lonhomework::queuegrade");
1.204 albertel 1193: &Apache::lonxml::debug("Problem Mode ".$env{'form.problemmode'});
1.261 albertel 1194: my ($symb) = &Apache::lonnet::whichuser();
1.145 albertel 1195: &Apache::lonxml::debug('symb is '.$symb);
1.204 albertel 1196: if ($env{'request.state'} eq "construct") {
1.145 albertel 1197: if ( -e $file ) {
1198: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
1199: ['problemmode']);
1.204 albertel 1200: if (!(defined $env{'form.problemmode'})) {
1.145 albertel 1201: #first visit to problem in construction space
1.204 albertel 1202: $env{'form.problemmode'}='View';
1.145 albertel 1203: &renderpage($request,$file);
1.204 albertel 1204: } elsif ($env{'form.problemmode'} eq &mt('EditXML') ||
1205: $env{'form.problemmode'} eq 'EditXML') {
1.145 albertel 1206: &editxmlmode($request,$file);
1.204 albertel 1207: } elsif ($env{'form.problemmode'} eq &mt('Calculate answers')) {
1.145 albertel 1208: &analyze($request,$file);
1209: } else {
1.268 albertel 1210: &update_construct_style();
1.145 albertel 1211: &renderpage($request,$file);
1212: }
1213: } else {
1214: # requested file doesn't exist in contruction space
1215: &newproblem($request);
1216: }
1217: } else {
1218: # just render the page normally outside of construction space
1219: &Apache::lonxml::debug("not construct");
1.52 albertel 1220: &renderpage($request,$file);
1.41 albertel 1221: }
1.145 albertel 1222: #my $td=&tv_interval($t0);
1223: #&Apache::lonxml::debug("Spent $td seconds processing");
1224: # always turn off debug messages
1225: $Apache::lonxml::debug=0;
1.253 albertel 1226: &unset_permissions();
1.145 albertel 1227: return OK;
1.52 albertel 1228:
1.1 albertel 1229: }
1230:
1231: 1;
1232: __END__
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