Annotation of loncom/homework/lonhomework.pm, revision 1.101
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.101 ! albertel 4: # $Id: lonhomework.pm,v 1.100 2002/11/10 15:39:37 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 ( $ENV{'request.state'} eq "published") {
1.90 sakharuk 62: if ( defined($ENV{'form.grade_target'} )
63: && ($ENV{'form.grade_target'} eq 'tex')) {
64: return ($ENV{'form.grade_target'});
65: } elsif ( defined($ENV{'form.grade_target'} )
1.66 albertel 66: && ($Apache::lonhomework::viewgrades == 'F' )) {
67: return ($ENV{'form.grade_target'});
68: }
1.90 sakharuk 69:
1.62 albertel 70: if ( defined($ENV{'form.submitted'})) {
1.52 albertel 71: return ('grade', 'web');
72: } else {
73: return ('web');
74: }
75: } elsif ($ENV{'request.state'} eq "construct") {
1.74 albertel 76: if ( defined($ENV{'form.grade_target'}) ) {
77: return ($ENV{'form.grade_target'});
78: }
1.62 albertel 79: if ( defined($ENV{'form.preview'})) {
80: if ( defined($ENV{'form.submitted'})) {
1.52 albertel 81: return ('grade', 'web');
82: } else {
83: return ('web');
84: }
85: } else {
1.88 albertel 86: if ( $ENV{'form.problemmode'} eq 'View' ||
87: $ENV{'form.problemmode'} eq 'Discard Edits and View') {
1.62 albertel 88: if ( defined($ENV{'form.submitted'}) &&
89: (!defined($ENV{'form.resetdata'})) ) {
1.60 albertel 90: return ('grade', 'web','answer');
1.42 albertel 91: } else {
1.60 albertel 92: return ('web','answer');
1.42 albertel 93: }
1.52 albertel 94: } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {
95: if ( $ENV{'form.submitted'} eq 'edit' ) {
1.80 albertel 96: if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
1.81 albertel 97: return ('modified','web','answer');
1.80 albertel 98: } else {
99: return ('modified','edit');
100: }
1.42 albertel 101: } else {
1.52 albertel 102: return ('edit');
1.42 albertel 103: }
1.52 albertel 104: } else {
105: return ('web');
106: }
1.15 albertel 107: }
1.52 albertel 108: }
109: return ();
1.5 albertel 110: }
111:
1.3 albertel 112: sub setup_vars {
1.52 albertel 113: my ($target) = @_;
114: return ';'
1.11 albertel 115: # return ';$external::target='.$target.';';
1.2 albertel 116: }
117:
118: sub send_header {
1.52 albertel 119: my ($request)= @_;
120: $request->print(&Apache::lontexconvert::header());
1.16 albertel 121: # $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
1.2 albertel 122: }
123:
1.36 albertel 124: sub createmenu {
1.52 albertel 125: my ($which,$request)=@_;
126: if ($which eq 'grade') {
127: $request->print('<script language="JavaScript">
1.91 albertel 128: hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
1.52 albertel 129: "height=350,width=150,menubar=no");
130: </script>');
131: }
1.36 albertel 132: }
133:
1.2 albertel 134: sub send_footer {
1.52 albertel 135: my ($request)= @_;
1.16 albertel 136: # $request->print('</form>');
1.52 albertel 137: $request->print(&Apache::lontexconvert::footer());
1.2 albertel 138: }
139:
1.52 albertel 140: $Apache::lonxml::browse='';
1.53 www 141:
1.92 bowersj2 142: # JB, 9/24/2002: Any changes in this function may require a change
143: # in lonnavmaps::resource::getDateStatus.
1.53 www 144: sub check_access {
1.52 albertel 145: my ($id) = @_;
146: my $date ='';
147: my $status = '';
148: my $datemsg = '';
149: my $lastdate = '';
150: my $temp;
151: my $type;
152: my $passed;
153: &Apache::lonxml::debug("checking for part :$id:");
1.73 albertel 154: &Apache::lonxml::debug("time:".time);
1.52 albertel 155: foreach $temp ("opendate","duedate","answerdate") {
156: $lastdate = $date;
157: $date = &Apache::lonnet::EXT("resource.$id.$temp");
1.87 www 158: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
159: if ($thistype eq 'date_interval') {
160: if ($temp eq 'opendate') {
161: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
162: }
163: if ($temp eq 'answerdate') {
164: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
165: }
166: }
1.52 albertel 167: &Apache::lonxml::debug("found :$date: for :$temp:");
168: if ($date eq '') {
169: $date = "an unknown date"; $passed = 0;
170: } elsif ($date eq 'con_lost') {
171: $date = "an indeterminate date"; $passed = 0;
172: } else {
173: if (time < $date) { $passed = 0; } else { $passed = 1; }
174: $date = localtime $date;
1.51 harris41 175: }
1.52 albertel 176: if (!$passed) { $type=$temp; last; }
177: }
178: &Apache::lonxml::debug("have :$type:$passed:");
179: if ($passed) {
180: $status='SHOW_ANSWER';
181: $datemsg=$date;
182: } elsif ($type eq 'opendate') {
183: $status='CLOSED';
184: $datemsg = "will open on $date";
185: } elsif ($type eq 'duedate') {
186: $status='CAN_ANSWER';
187: $datemsg = "is due at $date";
188: } elsif ($type eq 'answerdate') {
189: $status='CLOSED';
190: $datemsg = "was due on $lastdate, and answers will be available on $date";
191: }
192: if ($status eq 'CAN_ANSWER') {
193: #check #tries
194: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
195: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
196: if ( $tries eq '' ) { $tries = '0'; }
197: if ( $maxtries eq '' ) { $maxtries = '2'; }
198: if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
199: }
1.54 www 200:
1.56 www 201: if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
202: (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
1.54 www 203: return ('UNCHECKEDOUT','needs to be checked out');
204: }
205:
206:
1.52 albertel 207: &Apache::lonxml::debug("sending back :$status:$datemsg:");
208: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
1.91 albertel 209: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
1.52 albertel 210: $status='CAN_ANSWER';
211: $datemsg='is closed but you are allowed to view it';
212: }
213: if ($ENV{'request.state'} eq "construct") {
214: &Apache::lonxml::debug("in construction ignoring dates");
215: $status='CAN_ANSWER';
216: $datemsg='is in under construction';
217: }
218: return ($status,$datemsg);
1.20 albertel 219: }
220:
1.41 albertel 221: sub showhash {
1.52 albertel 222: my (%hash) = @_;
1.99 albertel 223: &showhashsubset(\%hash,'.');
1.79 albertel 224: return '';
225: }
226:
227: sub showhashsubset {
228: my ($hash,$keyre) = @_;
1.52 albertel 229: my $resultkey;
1.79 albertel 230: foreach $resultkey (sort keys %$hash) {
231: if ($resultkey =~ /$keyre/) {
232: if (ref($$hash{$resultkey})) {
233: if ($$hash{$resultkey} =~ /ARRAY/ ) {
234: my $string="$resultkey ---- (";
235: foreach my $elm (@{ $$hash{$resultkey} }) {
236: $string.="$elm,";
237: }
238: chop($string);
239: &Apache::lonxml::debug("$string)");
240: } else {
241: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.73 albertel 242: }
243: } else {
1.79 albertel 244: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.73 albertel 245: }
246: }
1.52 albertel 247: }
248: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
249: return '';
1.41 albertel 250: }
251:
252: sub setuppermissions {
1.52 albertel 253: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
254: $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
255: return ''
1.41 albertel 256: }
257:
258: sub setupheader {
1.52 albertel 259: my $request=$_[0];
260: if ($ENV{'browser.mathml'}) {
261: $request->content_type('text/xml');
262: } else {
263: $request->content_type('text/html');
264: }
1.68 albertel 265: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
266: &Apache::loncommon::no_cache($request);
267: }
1.52 albertel 268: $request->send_http_header;
269: return OK if $request->header_only;
270: return ''
1.41 albertel 271: }
1.35 albertel 272:
1.47 albertel 273: sub handle_save_or_undo {
1.52 albertel 274: my ($request,$problem,$result) = @_;
1.70 albertel 275: my $file = &Apache::lonnet::filelocation("",$request->uri);
276: my $filebak =$file.".bak";
277: my $filetmp =$file.".tmp";
1.64 albertel 278: my $error=0;
1.52 albertel 279:
280: if ($ENV{'form.Undo'} eq 'undo') {
1.70 albertel 281: my $error=0;
282: if (!copy($file,$filetmp)) { $error=1; }
283: if ((!$error) && (!copy($filebak,$file))) { $error=1; }
284: if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
285: if (!$error) {
286: $request->print("<p><b>Undid changes, Switched $filebak and $file</b></p>");
1.52 albertel 287: } else {
1.70 albertel 288: $request->print("<p><font color=\"red\" size=\"+1\"><b>Unable to undo, unable to switch $filebak and $file</b></font></p>");
1.64 albertel 289: $error=1;
1.52 albertel 290: }
291: } else {
1.70 albertel 292: my $fs=Apache::File->new(">$filebak");
1.52 albertel 293: if (defined($fs)) {
294: print $fs $$problem;
1.70 albertel 295: $request->print("<b>Making Backup to $filebak</b><br />");
1.52 albertel 296: } else {
1.70 albertel 297: $request->print("<font color=\"red\" size=\"+1\"><b>Unable to make backup $filebak</b></font>");
1.64 albertel 298: $error=2;
1.52 albertel 299: }
1.70 albertel 300: my $fh=Apache::File->new(">$file");
1.52 albertel 301: if (defined($fh)) {
302: print $fh $$result;
1.70 albertel 303: $request->print("<b>Saving Modifications to $file</b><br />");
1.47 albertel 304: } else {
1.70 albertel 305: $request->print("<font color=\"red\" size=\"+1\"><b>Unable to write to $file</b></font>");
1.64 albertel 306: $error|=4;
1.47 albertel 307: }
1.52 albertel 308: }
1.64 albertel 309: return $error;
310: }
311:
1.101 ! albertel 312: sub analyze_header {
! 313: my ($request) = @_;
! 314: my $result.='<html><body bgcolor="#FFFFFF">
! 315: <form name="lonhomework" method="POST" action="'.
! 316: $ENV{'request.uri'}.'">
! 317: <input type="submit" name="problemmode" value="EditXML" />
! 318: <input type="submit" name="problemmode" value="Edit" />
! 319: <hr />
! 320: <input type="submit" name="submit" value="View" />
! 321: <hr />
! 322: List of possible answers:
! 323: </form>';
! 324: $request->print($result);
! 325: $request->rflush();
! 326: }
! 327:
1.74 albertel 328: sub analyze {
1.101 ! albertel 329: my ($request,$file) = @_;
! 330: &Apache::lonxml::debug("Analyze");
! 331: my $result;
! 332: my %overall;
! 333: my %allparts;
! 334: my $rndseed=$ENV{'form.rndseed'};
! 335: srand($rndseed);
! 336: &analyze_header($request);
! 337: for(my $i;$i<$ENV{'form.numtoanalyze'};$i++) {
! 338: my $subresult=&Apache::lonnet::ssi($request->uri,
! 339: ('grade_target' => 'analyze'),
! 340: ('rndseed' => rand));
! 341: #&Apache::lonxml::debug(":$subresult:");
! 342: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
! 343: my %analyze=&Apache::lonnet::str2hash($subresult);
! 344: &Apache::lonhomework::showhash(%analyze);
! 345: my @parts = @{ $analyze{'parts'} };
! 346: foreach my $part (@parts) {
! 347: if (!exists($allparts{$part})) {$allparts{$part}=1;};
! 348: if ($analyze{$part.'.type'} eq 'numericalresponse') {
! 349: push( @{ $overall{$part.'.answer'} },
! 350: [@{ $analyze{$part.'.answer'} }]);
! 351: }
! 352: }
! 353: }
! 354: foreach my $part (keys(%allparts)) {
! 355: $request->print('<table><tr><td>Part '.$part.'</td></tr>');
! 356: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
! 357: $request->print('<tr><td>'.join('</td><td>',@{ $answer }).
! 358: '</td></tr>');
! 359: }
! 360: }
! 361: &Apache::lonhomework::showhash(%overall);
! 362: return $result;
1.74 albertel 363: }
364:
1.64 albertel 365: sub editxmlmode {
366: my ($request,$file) = @_;
367: my $result;
368: my $problem=&Apache::lonnet::getfile($file);
369: if ($problem == -1) {
370: &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
371: $problem='';
372: }
373: if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) {
374: my $error=&handle_save_or_undo($request,\$problem,
375: \$ENV{'form.editxmltext'});
376: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
377: }
1.80 albertel 378: &Apache::lonhomework::showhashsubset(\%ENV,'^form');
379: if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
380: &Apache::lonhomework::showhashsubset(\%ENV,'^form');
381: $ENV{'form.problemmode'}='View';
382: &renderpage($request,$file);
383: } else {
384: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1.82 bowersj2 385: my $xml_help = Apache::loncommon::help_open_topic("Problem_Editor_XML_Index");
1.80 albertel 386: if ($cols > 80) { $cols = 80; }
1.89 albertel 387: if ($cols < 70) { $cols = 70; }
388: if ($rows < 20) { $rows = 20; }
1.80 albertel 389: $result.='<html><body bgcolor="#FFFFFF">
1.64 albertel 390: <form name="lonhomework" method="POST" action="'.
391: $ENV{'request.uri'}.'">
392: <input type="hidden" name="problemmode" value="EditXML" />
1.80 albertel 393: <input type="submit" name="problemmode" value="Discard Edits and View" />
1.64 albertel 394: <input type="submit" name="problemmode" value="Edit" />
395: <hr />
396: <input type="submit" name="submit" value="Submit Changes" />
1.80 albertel 397: <input type="submit" name="submit" value="Submit Changes and View" />
1.64 albertel 398: <input type="submit" name="Undo" value="undo" />
399: <hr />
1.82 bowersj2 400: ' . $xml_help . ' Problem Help<br>
1.64 albertel 401: <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
1.73 albertel 402: &HTML::Entities::encode($problem).'</textarea>
1.64 albertel 403: </form></body></html>';
1.80 albertel 404: $request->print($result);
405: }
1.64 albertel 406: return '';
1.47 albertel 407: }
408:
1.41 albertel 409: sub renderpage {
1.52 albertel 410: my ($request,$file) = @_;
411:
412: my (@targets) = &get_target();
1.70 albertel 413: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1.52 albertel 414: foreach my $target (@targets) {
415: #my $t0 = [&gettimeofday()];
416: my $problem=&Apache::lonnet::getfile($file);
417: if ($problem == -1) {
418: &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
419: $problem='';
420: }
421:
422: my %mystyle;
423: my $result = '';
1.97 albertel 424: &Apache::inputtags::initialize_inputtags();
425: &Apache::outputtags::initialize_outputtags();
426: &Apache::edit::initialize_edit();
1.74 albertel 427: if ($target eq 'analyze') { %Apache::lonhomework::anaylze=(); }
1.85 albertel 428: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
429: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');}
1.52 albertel 430:
1.70 albertel 431: &Apache::lonxml::debug("Should be parsing now");
1.78 albertel 432: $result = &Apache::lonxml::xmlparse($request, $target, $problem,
1.98 albertel 433: &setup_vars($target),%mystyle);
1.52 albertel 434:
435: #$request->print("Result follows:");
436: if ($target eq 'modified') {
437: &handle_save_or_undo($request,\$problem,\$result);
438: } else {
1.74 albertel 439: if ($target eq 'analyze') {
440: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
1.75 albertel 441: undef(%Apache::lonhomework::analyze);
1.74 albertel 442: }
1.52 albertel 443: #my $td=&tv_interval($t0);
444: #if ( $Apache::lonxml::debug) {
445: #$result =~ s:</body>::;
446: #$result.="<br />Spent $td seconds processing target $target\n</body>";
447: #}
448: $request->print($result);
449: }
450: #$request->print(":Result ends");
451: #my $td=&tv_interval($t0);
452: }
1.41 albertel 453: }
454:
1.42 albertel 455: # with no arg it returns a HTML <option> list of the template titles
456: # with one arg it returns the filename associated with the arg passed
457: sub get_template_list {
1.52 albertel 458: my ($namewanted,$extension) = @_;
459: my $result;
1.85 albertel 460: my @allnames;
1.52 albertel 461: &Apache::lonxml::debug("Looking for :$extension:");
1.91 albertel 462: foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
1.52 albertel 463: my $name=&Apache::lonnet::metadata($file,'title');
464: if ($namewanted && ($name eq $namewanted)) {
465: $result=$file;
466: last;
467: } else {
1.85 albertel 468: push (@allnames, $name);
1.42 albertel 469: }
1.52 albertel 470: }
1.86 albertel 471: if (@allnames && !$result) {
1.85 albertel 472: $result="<option>Select a $extension type</option>\n<option>".
473: join('</option><option>',sort(@allnames)).'</option>';
474: }
1.52 albertel 475: return $result;
1.42 albertel 476: }
477:
478: sub newproblem {
1.65 matthew 479: my ($request) = @_;
480: my $extension=$request->uri;
481: $extension=~s:^.*\.([\w]+)$:$1:;
482: &Apache::lonxml::debug("Looking for :$extension:");
1.85 albertel 483: if ($ENV{'form.template'} &&
484: $ENV{'form.template'} ne "Select a $extension type") {
1.65 matthew 485: use File::Copy;
486: my $file = &get_template_list($ENV{'form.template'},$extension);
487: my $dest = &Apache::lonnet::filelocation("",$request->uri);
488: copy($file,$dest);
489: &renderpage($request,$dest);
490: } elsif($ENV{'form.newfile'}) {
491: # I don't like hard-coded filenames but for now, this will work.
492: use File::Copy;
493: my $templatefilename =
1.66 albertel 494: $request->dir_config('lonIncludes').'/templates/blank.problem';
495: &Apache::lonxml::debug("$templatefilename");
1.65 matthew 496: my $dest = &Apache::lonnet::filelocation("",$request->uri);
497: copy($templatefilename,$dest);
498: &renderpage($request,$dest);
1.85 albertel 499: } else {
1.65 matthew 500: my $templatelist=&get_template_list('',$extension);
501: my $url=$request->uri;
502: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.85 albertel 503: my $instructions;
504: if ($templatelist) { $instructions=", select a template from the pull-down menu below. Then";}
1.65 matthew 505: $request->print(<<ENDNEWPROBLEM);
1.42 albertel 506: <body bgcolor="#FFFFFF">
1.85 albertel 507: The requested file $url doesn\'t exist. <br />
508: To create a new $extension$instructions click on the Create $extension button.
1.42 albertel 509: <form action="$url" method="POST">
510: ENDNEWPROBLEM
1.85 albertel 511: if (defined($templatelist)) {
512: $request->print("<select name=\"template\">$templatelist</select>");
513: }
514: $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"Create $extension\" />");
515: $request->print("</form></body>");
1.65 matthew 516: }
517: return '';
1.42 albertel 518: }
519:
520: sub view_or_edit_menu {
1.52 albertel 521: my ($request) = @_;
522: my $url=$request->uri;
523: $request->print(<<EDITMENU);
1.42 albertel 524: <body bgcolor="#FFFFFF">
525: <form action="$url" method="POST">
526: Would you like to <input type="submit" name="problemmode" value="View"> or
527: <input type="submit" name="problemmode" value="Edit"> the problem.
528: </form>
529: </body>
530: EDITMENU
531: }
532:
1.41 albertel 533: sub handler {
1.52 albertel 534: #my $t0 = [&gettimeofday()];
535: my $request=$_[0];
1.41 albertel 536:
1.95 albertel 537: # if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;}
538: $Apache::lonxml::debug=$ENV{'user.debug'};
1.41 albertel 539:
540: if (&setupheader($request)) { return OK; }
1.52 albertel 541: $ENV{'request.uri'}=$request->uri;
1.41 albertel 542:
543: #setup permissions
1.52 albertel 544: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
545: $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
546: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
1.71 albertel 547: # some times multiple problemmodes are submitted, need to select
548: # the last one
1.80 albertel 549: &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
1.72 albertel 550: if ( defined($ENV{'form.problemmode'}) &&
1.77 albertel 551: ref($ENV{'form.problemmode'}) ) {
1.80 albertel 552: &Apache::lonxml::debug("Problem Mode ".join(",",@$ENV{'form.problemmode'}));
1.72 albertel 553: my $mode=$ENV{'form.problemmode'}->[-1];
1.71 albertel 554: undef $ENV{'form.problemmode'};
1.72 albertel 555: $ENV{'form.problemmode'}=$mode;
1.71 albertel 556: }
1.64 albertel 557: &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
1.52 albertel 558: my $file=&Apache::lonnet::filelocation("",$request->uri);
559:
560: #check if we know where we are
561: if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) {
562: # if we are browsing we might not be able to know where we are
563: if ($Apache::lonhomework::browse ne 'F') {
564: #should know where we are, so ask
565: $request->internal_redirect('/adm/ambiguous'); return;
1.41 albertel 566: }
1.52 albertel 567: }
1.41 albertel 568:
1.52 albertel 569: if ($ENV{'request.state'} eq "construct") {
1.62 albertel 570: if ($ENV{'form.resetdata'} eq 'Reset Submissions') {
571: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
572: &Apache::lonnet::tmpreset($symb,'',$domain,$name);
573: }
1.52 albertel 574: if ( -e $file ) {
575: if (!(defined $ENV{'form.problemmode'})) {
576: #first visit to problem in construction space
1.64 albertel 577: #&view_or_edit_menu($request);
578: $ENV{'form.problemmode'}='View';
579: &renderpage($request,$file);
580: } elsif ($ENV{'form.problemmode'} eq 'EditXML') {
581: &editxmlmode($request,$file);
1.74 albertel 582: } elsif ($ENV{'form.problemmode'} eq 'Answer Distribution') {
583: &analyze($request,$file);
1.52 albertel 584: } else {
585: &renderpage($request,$file);
1.41 albertel 586: }
587: } else {
1.52 albertel 588: # requested file doesn't exist in contruction space
589: &newproblem($request);
1.41 albertel 590: }
1.52 albertel 591: } else {
592: # just render the page normally outside of construction space
1.74 albertel 593: &Apache::lonxml::debug("not construct");
1.52 albertel 594: &renderpage($request,$file);
595: }
596: #my $td=&tv_interval($t0);
597: #&Apache::lonxml::debug("Spent $td seconds processing");
598: # &Apache::lonhomework::send_footer($request);
599: # always turn off debug messages
600: $Apache::lonxml::debug=0;
601: return OK;
602:
1.1 albertel 603: }
604:
605: 1;
606: __END__
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