Annotation of loncom/homework/lonhomework.pm, revision 1.87
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.87 ! www 4: # $Id: lonhomework.pm,v 1.86 2002/08/16 21:30:08 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/
27: #
1.52 albertel 28: # Guy Albertelli
1.17 www 29: # 11/30 Gerd Kortemeyer
1.56 www 30: # 6/1,8/17,8/18 Gerd Kortemeyer
1.82 bowersj2 31: # 7/18 Jeremy Bowers
1.1 albertel 32:
33: package Apache::lonhomework;
34: use strict;
1.73 albertel 35: use Apache::style();
36: use Apache::lonxml();
37: use Apache::lonnet();
38: use Apache::lonplot();
39: use Apache::inputtags();
40: use Apache::structuretags();
41: use Apache::randomlabel();
42: use Apache::response();
43: use Apache::hint();
44: use Apache::outputtags();
1.83 albertel 45: use Apache::caparesponse();
46: use Apache::radiobuttonresponse();
47: use Apache::optionresponse();
48: use Apache::imageresponse();
49: use Apache::essayresponse();
50: use Apache::externalresponse();
1.26 www 51: use Apache::Constants qw(:common);
1.73 albertel 52: use HTML::Entities();
1.83 albertel 53: use Apache::loncommon();
1.47 albertel 54: #use Time::HiRes qw( gettimeofday tv_interval );
1.43 albertel 55:
1.69 harris41 56: BEGIN {
1.43 albertel 57: &Apache::lonxml::register_insert();
58: }
59:
1.5 albertel 60: sub get_target {
1.52 albertel 61: if ( $ENV{'request.state'} eq "published") {
1.66 albertel 62: if ( defined($ENV{'form.grade_target'})
63: && ($Apache::lonhomework::viewgrades == 'F' )) {
64: return ($ENV{'form.grade_target'});
65: }
1.62 albertel 66: if ( defined($ENV{'form.submitted'})) {
1.52 albertel 67: return ('grade', 'web');
68: } else {
69: return ('web');
70: }
71: } elsif ($ENV{'request.state'} eq "construct") {
1.74 albertel 72: if ( defined($ENV{'form.grade_target'}) ) {
73: return ($ENV{'form.grade_target'});
74: }
1.62 albertel 75: if ( defined($ENV{'form.preview'})) {
76: if ( defined($ENV{'form.submitted'})) {
1.52 albertel 77: return ('grade', 'web');
78: } else {
79: return ('web');
80: }
81: } else {
82: if ( $ENV{'form.problemmode'} eq 'View' ) {
1.62 albertel 83: if ( defined($ENV{'form.submitted'}) &&
84: (!defined($ENV{'form.resetdata'})) ) {
1.60 albertel 85: return ('grade', 'web','answer');
1.42 albertel 86: } else {
1.60 albertel 87: return ('web','answer');
1.42 albertel 88: }
1.52 albertel 89: } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {
90: if ( $ENV{'form.submitted'} eq 'edit' ) {
1.80 albertel 91: if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
1.81 albertel 92: return ('modified','web','answer');
1.80 albertel 93: } else {
94: return ('modified','edit');
95: }
1.42 albertel 96: } else {
1.52 albertel 97: return ('edit');
1.42 albertel 98: }
1.52 albertel 99: } else {
100: return ('web');
101: }
1.15 albertel 102: }
1.52 albertel 103: }
104: return ();
1.5 albertel 105: }
106:
1.3 albertel 107: sub setup_vars {
1.52 albertel 108: my ($target) = @_;
109: return ';'
1.11 albertel 110: # return ';$external::target='.$target.';';
1.2 albertel 111: }
112:
113: sub send_header {
1.52 albertel 114: my ($request)= @_;
115: $request->print(&Apache::lontexconvert::header());
1.16 albertel 116: # $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
1.2 albertel 117: }
118:
1.36 albertel 119: sub createmenu {
1.52 albertel 120: my ($which,$request)=@_;
121: if ($which eq 'grade') {
122: $request->print('<script language="JavaScript">
123: hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
124: "height=350,width=150,menubar=no");
125: </script>');
126: }
1.36 albertel 127: }
128:
1.2 albertel 129: sub send_footer {
1.52 albertel 130: my ($request)= @_;
1.16 albertel 131: # $request->print('</form>');
1.52 albertel 132: $request->print(&Apache::lontexconvert::footer());
1.2 albertel 133: }
134:
1.52 albertel 135: $Apache::lonxml::browse='';
1.53 www 136:
137: sub check_access {
1.52 albertel 138: my ($id) = @_;
139: my $date ='';
140: my $status = '';
141: my $datemsg = '';
142: my $lastdate = '';
143: my $temp;
144: my $type;
145: my $passed;
146: &Apache::lonxml::debug("checking for part :$id:");
1.73 albertel 147: &Apache::lonxml::debug("time:".time);
1.52 albertel 148: foreach $temp ("opendate","duedate","answerdate") {
149: $lastdate = $date;
150: $date = &Apache::lonnet::EXT("resource.$id.$temp");
1.87 ! www 151: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
! 152: if ($thistype eq 'date_interval') {
! 153: if ($temp eq 'opendate') {
! 154: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
! 155: }
! 156: if ($temp eq 'answerdate') {
! 157: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
! 158: }
! 159: }
1.52 albertel 160: &Apache::lonxml::debug("found :$date: for :$temp:");
161: if ($date eq '') {
162: $date = "an unknown date"; $passed = 0;
163: } elsif ($date eq 'con_lost') {
164: $date = "an indeterminate date"; $passed = 0;
165: } else {
166: if (time < $date) { $passed = 0; } else { $passed = 1; }
167: $date = localtime $date;
1.51 harris41 168: }
1.52 albertel 169: if (!$passed) { $type=$temp; last; }
170: }
171: &Apache::lonxml::debug("have :$type:$passed:");
172: if ($passed) {
173: $status='SHOW_ANSWER';
174: $datemsg=$date;
175: } elsif ($type eq 'opendate') {
176: $status='CLOSED';
177: $datemsg = "will open on $date";
178: } elsif ($type eq 'duedate') {
179: $status='CAN_ANSWER';
180: $datemsg = "is due at $date";
181: } elsif ($type eq 'answerdate') {
182: $status='CLOSED';
183: $datemsg = "was due on $lastdate, and answers will be available on $date";
184: }
185: if ($status eq 'CAN_ANSWER') {
186: #check #tries
187: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
188: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
189: if ( $tries eq '' ) { $tries = '0'; }
190: if ( $maxtries eq '' ) { $maxtries = '2'; }
191: if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
192: }
1.54 www 193:
1.56 www 194: if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
195: (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
1.54 www 196: return ('UNCHECKEDOUT','needs to be checked out');
197: }
198:
199:
1.52 albertel 200: &Apache::lonxml::debug("sending back :$status:$datemsg:");
201: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
202: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
203: $status='CAN_ANSWER';
204: $datemsg='is closed but you are allowed to view it';
205: }
206: if ($ENV{'request.state'} eq "construct") {
207: &Apache::lonxml::debug("in construction ignoring dates");
208: $status='CAN_ANSWER';
209: $datemsg='is in under construction';
210: }
211: return ($status,$datemsg);
1.20 albertel 212: }
213:
1.41 albertel 214: sub showhash {
1.52 albertel 215: my (%hash) = @_;
1.79 albertel 216: &showhashsubset(\%hash,'');
217: return '';
218: }
219:
220: sub showhashsubset {
221: my ($hash,$keyre) = @_;
1.52 albertel 222: my $resultkey;
1.79 albertel 223: foreach $resultkey (sort keys %$hash) {
224: if ($resultkey =~ /$keyre/) {
225: if (ref($$hash{$resultkey})) {
226: if ($$hash{$resultkey} =~ /ARRAY/ ) {
227: my $string="$resultkey ---- (";
228: foreach my $elm (@{ $$hash{$resultkey} }) {
229: $string.="$elm,";
230: }
231: chop($string);
232: &Apache::lonxml::debug("$string)");
233: } else {
234: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.73 albertel 235: }
236: } else {
1.79 albertel 237: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.73 albertel 238: }
239: }
1.52 albertel 240: }
241: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
242: return '';
1.41 albertel 243: }
244:
245: sub setuppermissions {
1.52 albertel 246: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
247: $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
248: return ''
1.41 albertel 249: }
250:
251: sub setupheader {
1.52 albertel 252: my $request=$_[0];
253: if ($ENV{'browser.mathml'}) {
254: $request->content_type('text/xml');
255: } else {
256: $request->content_type('text/html');
257: }
1.68 albertel 258: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
259: &Apache::loncommon::no_cache($request);
260: }
1.52 albertel 261: $request->send_http_header;
262: return OK if $request->header_only;
263: return ''
1.41 albertel 264: }
1.35 albertel 265:
1.47 albertel 266: sub handle_save_or_undo {
1.52 albertel 267: my ($request,$problem,$result) = @_;
1.70 albertel 268: my $file = &Apache::lonnet::filelocation("",$request->uri);
269: my $filebak =$file.".bak";
270: my $filetmp =$file.".tmp";
1.64 albertel 271: my $error=0;
1.52 albertel 272:
273: if ($ENV{'form.Undo'} eq 'undo') {
1.70 albertel 274: my $error=0;
275: if (!copy($file,$filetmp)) { $error=1; }
276: if ((!$error) && (!copy($filebak,$file))) { $error=1; }
277: if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
278: if (!$error) {
279: $request->print("<p><b>Undid changes, Switched $filebak and $file</b></p>");
1.52 albertel 280: } else {
1.70 albertel 281: $request->print("<p><font color=\"red\" size=\"+1\"><b>Unable to undo, unable to switch $filebak and $file</b></font></p>");
1.64 albertel 282: $error=1;
1.52 albertel 283: }
284: } else {
1.70 albertel 285: my $fs=Apache::File->new(">$filebak");
1.52 albertel 286: if (defined($fs)) {
287: print $fs $$problem;
1.70 albertel 288: $request->print("<b>Making Backup to $filebak</b><br />");
1.52 albertel 289: } else {
1.70 albertel 290: $request->print("<font color=\"red\" size=\"+1\"><b>Unable to make backup $filebak</b></font>");
1.64 albertel 291: $error=2;
1.52 albertel 292: }
1.70 albertel 293: my $fh=Apache::File->new(">$file");
1.52 albertel 294: if (defined($fh)) {
295: print $fh $$result;
1.70 albertel 296: $request->print("<b>Saving Modifications to $file</b><br />");
1.47 albertel 297: } else {
1.70 albertel 298: $request->print("<font color=\"red\" size=\"+1\"><b>Unable to write to $file</b></font>");
1.64 albertel 299: $error|=4;
1.47 albertel 300: }
1.52 albertel 301: }
1.64 albertel 302: return $error;
303: }
304:
1.74 albertel 305: sub analyze {
306: my ($request,$file) = @_;
307: &Apache::lonxml::debug("Analyze");
308: my $result=&Apache::lonnet::ssi($request->uri,('grade_target' => 'analyze'));
309: &Apache::lonxml::debug(":$result:");
310: (my $garbage,$result)=split(/_HASH_REF__/,$result,2);
311: &showhash(&Apache::lonnet::str2hash($result));
312: return $result;
313: }
314:
1.64 albertel 315: sub editxmlmode {
316: my ($request,$file) = @_;
317: my $result;
318: my $problem=&Apache::lonnet::getfile($file);
319: if ($problem == -1) {
320: &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
321: $problem='';
322: }
323: if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) {
324: my $error=&handle_save_or_undo($request,\$problem,
325: \$ENV{'form.editxmltext'});
326: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
327: }
1.80 albertel 328: &Apache::lonhomework::showhashsubset(\%ENV,'^form');
329: if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
330: &Apache::lonhomework::showhashsubset(\%ENV,'^form');
331: $ENV{'form.problemmode'}='View';
332: &renderpage($request,$file);
333: } else {
334: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1.82 bowersj2 335: my $xml_help = Apache::loncommon::help_open_topic("Problem_Editor_XML_Index");
1.80 albertel 336: if ($cols > 80) { $cols = 80; }
337: $result.='<html><body bgcolor="#FFFFFF">
1.64 albertel 338: <form name="lonhomework" method="POST" action="'.
339: $ENV{'request.uri'}.'">
340: <input type="hidden" name="problemmode" value="EditXML" />
1.80 albertel 341: <input type="submit" name="problemmode" value="Discard Edits and View" />
1.64 albertel 342: <input type="submit" name="problemmode" value="Edit" />
343: <hr />
344: <input type="submit" name="submit" value="Submit Changes" />
1.80 albertel 345: <input type="submit" name="submit" value="Submit Changes and View" />
1.64 albertel 346: <input type="submit" name="Undo" value="undo" />
347: <hr />
1.82 bowersj2 348: ' . $xml_help . ' Problem Help<br>
1.64 albertel 349: <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
1.73 albertel 350: &HTML::Entities::encode($problem).'</textarea>
1.64 albertel 351: </form></body></html>';
1.80 albertel 352: $request->print($result);
353: }
1.64 albertel 354: return '';
1.47 albertel 355: }
356:
1.41 albertel 357: sub renderpage {
1.52 albertel 358: my ($request,$file) = @_;
359:
360: my (@targets) = &get_target();
1.70 albertel 361: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1.52 albertel 362: foreach my $target (@targets) {
363: #my $t0 = [&gettimeofday()];
364: my $problem=&Apache::lonnet::getfile($file);
365: if ($problem == -1) {
366: &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
367: $problem='';
368: }
369:
370: my %mystyle;
371: my $result = '';
372: &Apache::inputtags::initialize_inputtags;
373: &Apache::edit::initialize_edit;
1.74 albertel 374: if ($target eq 'analyze') { %Apache::lonhomework::anaylze=(); }
1.52 albertel 375: if ($target eq 'web') {
1.76 albertel 376: my ($symb)=&Apache::lonxml::whichuser();
377: if ($symb eq '') {
1.52 albertel 378: if ($ENV{'request.state'} eq "construct") {
1.36 albertel 379: } else {
1.84 bowersj2 380: my $help = Apache::loncommon::help_open_topic("Ambiguous_Reference");
381: $request->print("Browsing or <a href=\"/adm/ambiguous\">ambiguous</a> reference, submissions ignored $help<br />");
1.51 harris41 382: }
1.52 albertel 383: }
384: #if ($Apache::lonhomework::viewgrades eq 'F') {&createmenu('grade',$request); }
385: }
1.85 albertel 386: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
387: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');}
1.52 albertel 388:
389: my $default=&Apache::lonnet::getfile('/home/httpd/html/res/adm/includes/default_homework.lcpm');
390: if ($default == -1) {
391: &Apache::lonxml::error("<b>Unable to find <i>default_homework.lcpm</i></b>");
392: $default='';
393: }
1.70 albertel 394: &Apache::lonxml::debug("Should be parsing now");
1.78 albertel 395: $result = &Apache::lonxml::xmlparse($request, $target, $problem,
1.52 albertel 396: $default.&setup_vars($target),%mystyle);
397:
398: #$request->print("Result follows:");
399: if ($target eq 'modified') {
400: &handle_save_or_undo($request,\$problem,\$result);
401: } else {
1.74 albertel 402: if ($target eq 'analyze') {
403: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
1.75 albertel 404: undef(%Apache::lonhomework::analyze);
1.74 albertel 405: }
1.52 albertel 406: #my $td=&tv_interval($t0);
407: #if ( $Apache::lonxml::debug) {
408: #$result =~ s:</body>::;
409: #$result.="<br />Spent $td seconds processing target $target\n</body>";
410: #}
411: $request->print($result);
412: }
413: #$request->print(":Result ends");
414: #my $td=&tv_interval($t0);
415: }
1.41 albertel 416: }
417:
1.42 albertel 418: # with no arg it returns a HTML <option> list of the template titles
419: # with one arg it returns the filename associated with the arg passed
420: sub get_template_list {
1.52 albertel 421: my ($namewanted,$extension) = @_;
422: my $result;
1.85 albertel 423: my @allnames;
1.52 albertel 424: &Apache::lonxml::debug("Looking for :$extension:");
425: foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
426: my $name=&Apache::lonnet::metadata($file,'title');
427: if ($namewanted && ($name eq $namewanted)) {
428: $result=$file;
429: last;
430: } else {
1.85 albertel 431: push (@allnames, $name);
1.42 albertel 432: }
1.52 albertel 433: }
1.86 albertel 434: if (@allnames && !$result) {
1.85 albertel 435: $result="<option>Select a $extension type</option>\n<option>".
436: join('</option><option>',sort(@allnames)).'</option>';
437: }
1.52 albertel 438: return $result;
1.42 albertel 439: }
440:
441: sub newproblem {
1.65 matthew 442: my ($request) = @_;
443: my $extension=$request->uri;
444: $extension=~s:^.*\.([\w]+)$:$1:;
445: &Apache::lonxml::debug("Looking for :$extension:");
1.85 albertel 446: if ($ENV{'form.template'} &&
447: $ENV{'form.template'} ne "Select a $extension type") {
1.65 matthew 448: use File::Copy;
449: my $file = &get_template_list($ENV{'form.template'},$extension);
450: my $dest = &Apache::lonnet::filelocation("",$request->uri);
451: copy($file,$dest);
452: &renderpage($request,$dest);
453: } elsif($ENV{'form.newfile'}) {
454: # I don't like hard-coded filenames but for now, this will work.
455: use File::Copy;
456: my $templatefilename =
1.66 albertel 457: $request->dir_config('lonIncludes').'/templates/blank.problem';
458: &Apache::lonxml::debug("$templatefilename");
1.65 matthew 459: my $dest = &Apache::lonnet::filelocation("",$request->uri);
460: copy($templatefilename,$dest);
461: &renderpage($request,$dest);
1.85 albertel 462: } else {
1.65 matthew 463: my $templatelist=&get_template_list('',$extension);
464: my $url=$request->uri;
465: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.85 albertel 466: my $instructions;
467: if ($templatelist) { $instructions=", select a template from the pull-down menu below. Then";}
1.65 matthew 468: $request->print(<<ENDNEWPROBLEM);
1.42 albertel 469: <body bgcolor="#FFFFFF">
1.85 albertel 470: The requested file $url doesn\'t exist. <br />
471: To create a new $extension$instructions click on the Create $extension button.
1.42 albertel 472: <form action="$url" method="POST">
473: ENDNEWPROBLEM
1.85 albertel 474: if (defined($templatelist)) {
475: $request->print("<select name=\"template\">$templatelist</select>");
476: }
477: $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"Create $extension\" />");
478: $request->print("</form></body>");
1.65 matthew 479: }
480: return '';
1.42 albertel 481: }
482:
483: sub view_or_edit_menu {
1.52 albertel 484: my ($request) = @_;
485: my $url=$request->uri;
486: $request->print(<<EDITMENU);
1.42 albertel 487: <body bgcolor="#FFFFFF">
488: <form action="$url" method="POST">
489: Would you like to <input type="submit" name="problemmode" value="View"> or
490: <input type="submit" name="problemmode" value="Edit"> the problem.
491: </form>
492: </body>
493: EDITMENU
494: }
495:
1.41 albertel 496: sub handler {
1.52 albertel 497: #my $t0 = [&gettimeofday()];
498: my $request=$_[0];
1.41 albertel 499:
1.52 albertel 500: if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;}
1.41 albertel 501:
502: if (&setupheader($request)) { return OK; }
1.52 albertel 503: $ENV{'request.uri'}=$request->uri;
1.41 albertel 504:
505: #setup permissions
1.52 albertel 506: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
507: $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
508: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
1.71 albertel 509: # some times multiple problemmodes are submitted, need to select
510: # the last one
1.80 albertel 511: &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
1.72 albertel 512: if ( defined($ENV{'form.problemmode'}) &&
1.77 albertel 513: ref($ENV{'form.problemmode'}) ) {
1.80 albertel 514: &Apache::lonxml::debug("Problem Mode ".join(",",@$ENV{'form.problemmode'}));
1.72 albertel 515: my $mode=$ENV{'form.problemmode'}->[-1];
1.71 albertel 516: undef $ENV{'form.problemmode'};
1.72 albertel 517: $ENV{'form.problemmode'}=$mode;
1.71 albertel 518: }
1.64 albertel 519: &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
1.52 albertel 520: my $file=&Apache::lonnet::filelocation("",$request->uri);
521:
522: #check if we know where we are
523: if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) {
524: # if we are browsing we might not be able to know where we are
525: if ($Apache::lonhomework::browse ne 'F') {
526: #should know where we are, so ask
527: $request->internal_redirect('/adm/ambiguous'); return;
1.41 albertel 528: }
1.52 albertel 529: }
1.41 albertel 530:
1.52 albertel 531: if ($ENV{'request.state'} eq "construct") {
1.62 albertel 532: if ($ENV{'form.resetdata'} eq 'Reset Submissions') {
533: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
534: &Apache::lonnet::tmpreset($symb,'',$domain,$name);
535: }
1.52 albertel 536: if ( -e $file ) {
537: if (!(defined $ENV{'form.problemmode'})) {
538: #first visit to problem in construction space
1.64 albertel 539: #&view_or_edit_menu($request);
540: $ENV{'form.problemmode'}='View';
541: &renderpage($request,$file);
542: } elsif ($ENV{'form.problemmode'} eq 'EditXML') {
543: &editxmlmode($request,$file);
1.74 albertel 544: } elsif ($ENV{'form.problemmode'} eq 'Answer Distribution') {
545: &analyze($request,$file);
1.52 albertel 546: } else {
547: &renderpage($request,$file);
1.41 albertel 548: }
549: } else {
1.52 albertel 550: # requested file doesn't exist in contruction space
551: &newproblem($request);
1.41 albertel 552: }
1.52 albertel 553: } else {
554: # just render the page normally outside of construction space
1.74 albertel 555: &Apache::lonxml::debug("not construct");
1.52 albertel 556: &renderpage($request,$file);
557: }
558: #my $td=&tv_interval($t0);
559: #&Apache::lonxml::debug("Spent $td seconds processing");
560: # &Apache::lonhomework::send_footer($request);
561: # always turn off debug messages
562: $Apache::lonxml::debug=0;
563: return OK;
564:
1.1 albertel 565: }
566:
567: 1;
568: __END__
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