Annotation of loncom/homework/lonhomework.pm, revision 1.106
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.106 ! albertel 4: # $Id: lonhomework.pm,v 1.105 2002/12/11 15:33:55 www 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();
1.106 ! albertel 51: use Apache::rankresponse();
1.26 www 52: use Apache::Constants qw(:common);
1.73 albertel 53: use HTML::Entities();
1.83 albertel 54: use Apache::loncommon();
1.47 albertel 55: #use Time::HiRes qw( gettimeofday tv_interval );
1.43 albertel 56:
1.69 harris41 57: BEGIN {
1.43 albertel 58: &Apache::lonxml::register_insert();
59: }
60:
1.5 albertel 61: sub get_target {
1.52 albertel 62: if ( $ENV{'request.state'} eq "published") {
1.90 sakharuk 63: if ( defined($ENV{'form.grade_target'} )
64: && ($ENV{'form.grade_target'} eq 'tex')) {
65: return ($ENV{'form.grade_target'});
66: } elsif ( defined($ENV{'form.grade_target'} )
1.66 albertel 67: && ($Apache::lonhomework::viewgrades == 'F' )) {
68: return ($ENV{'form.grade_target'});
69: }
1.90 sakharuk 70:
1.62 albertel 71: if ( defined($ENV{'form.submitted'})) {
1.52 albertel 72: return ('grade', 'web');
73: } else {
74: return ('web');
75: }
76: } elsif ($ENV{'request.state'} eq "construct") {
1.74 albertel 77: if ( defined($ENV{'form.grade_target'}) ) {
78: return ($ENV{'form.grade_target'});
79: }
1.62 albertel 80: if ( defined($ENV{'form.preview'})) {
81: if ( defined($ENV{'form.submitted'})) {
1.52 albertel 82: return ('grade', 'web');
83: } else {
84: return ('web');
85: }
86: } else {
1.88 albertel 87: if ( $ENV{'form.problemmode'} eq 'View' ||
88: $ENV{'form.problemmode'} eq 'Discard Edits and View') {
1.62 albertel 89: if ( defined($ENV{'form.submitted'}) &&
90: (!defined($ENV{'form.resetdata'})) ) {
1.60 albertel 91: return ('grade', 'web','answer');
1.42 albertel 92: } else {
1.60 albertel 93: return ('web','answer');
1.42 albertel 94: }
1.52 albertel 95: } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {
96: if ( $ENV{'form.submitted'} eq 'edit' ) {
1.80 albertel 97: if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
1.81 albertel 98: return ('modified','web','answer');
1.80 albertel 99: } else {
100: return ('modified','edit');
101: }
1.42 albertel 102: } else {
1.52 albertel 103: return ('edit');
1.42 albertel 104: }
1.52 albertel 105: } else {
106: return ('web');
107: }
1.15 albertel 108: }
1.52 albertel 109: }
110: return ();
1.5 albertel 111: }
112:
1.3 albertel 113: sub setup_vars {
1.52 albertel 114: my ($target) = @_;
115: return ';'
1.11 albertel 116: # return ';$external::target='.$target.';';
1.2 albertel 117: }
118:
119: sub send_header {
1.52 albertel 120: my ($request)= @_;
121: $request->print(&Apache::lontexconvert::header());
1.16 albertel 122: # $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
1.2 albertel 123: }
124:
1.36 albertel 125: sub createmenu {
1.52 albertel 126: my ($which,$request)=@_;
127: if ($which eq 'grade') {
128: $request->print('<script language="JavaScript">
1.91 albertel 129: hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
1.52 albertel 130: "height=350,width=150,menubar=no");
131: </script>');
132: }
1.36 albertel 133: }
134:
1.2 albertel 135: sub send_footer {
1.52 albertel 136: my ($request)= @_;
1.16 albertel 137: # $request->print('</form>');
1.52 albertel 138: $request->print(&Apache::lontexconvert::footer());
1.2 albertel 139: }
140:
1.52 albertel 141: $Apache::lonxml::browse='';
1.53 www 142:
1.92 bowersj2 143: # JB, 9/24/2002: Any changes in this function may require a change
144: # in lonnavmaps::resource::getDateStatus.
1.53 www 145: sub check_access {
1.52 albertel 146: my ($id) = @_;
147: my $date ='';
1.103 albertel 148: my $status;
1.52 albertel 149: my $datemsg = '';
150: my $lastdate = '';
151: my $temp;
152: my $type;
153: my $passed;
1.106 ! albertel 154:
! 155: if ($ENV{'request.state'} eq "construct") {
! 156: &Apache::lonxml::debug("in construction ignoring dates");
! 157: $status='CAN_ANSWER';
! 158: $datemsg='is in under construction';
! 159: return ($status,$datemsg);
! 160: }
! 161:
1.52 albertel 162: &Apache::lonxml::debug("checking for part :$id:");
1.73 albertel 163: &Apache::lonxml::debug("time:".time);
1.52 albertel 164: foreach $temp ("opendate","duedate","answerdate") {
165: $lastdate = $date;
166: $date = &Apache::lonnet::EXT("resource.$id.$temp");
1.87 www 167: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
1.103 albertel 168: if ($thistype =~ /^(con_lost|no_such_host)/ ||
169: $date =~ /^(con_lost|no_such_host)/) {
170: $status='UNAVAILABLE';
171: $date="may open later.";
172: return($status,$date);
173: }
1.87 www 174: if ($thistype eq 'date_interval') {
175: if ($temp eq 'opendate') {
176: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
177: }
178: if ($temp eq 'answerdate') {
179: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
180: }
181: }
1.52 albertel 182: &Apache::lonxml::debug("found :$date: for :$temp:");
183: if ($date eq '') {
184: $date = "an unknown date"; $passed = 0;
185: } elsif ($date eq 'con_lost') {
186: $date = "an indeterminate date"; $passed = 0;
187: } else {
188: if (time < $date) { $passed = 0; } else { $passed = 1; }
189: $date = localtime $date;
1.51 harris41 190: }
1.52 albertel 191: if (!$passed) { $type=$temp; last; }
192: }
193: &Apache::lonxml::debug("have :$type:$passed:");
194: if ($passed) {
195: $status='SHOW_ANSWER';
196: $datemsg=$date;
197: } elsif ($type eq 'opendate') {
198: $status='CLOSED';
199: $datemsg = "will open on $date";
200: } elsif ($type eq 'duedate') {
201: $status='CAN_ANSWER';
202: $datemsg = "is due at $date";
203: } elsif ($type eq 'answerdate') {
204: $status='CLOSED';
205: $datemsg = "was due on $lastdate, and answers will be available on $date";
206: }
207: if ($status eq 'CAN_ANSWER') {
208: #check #tries
209: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
210: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
211: if ( $tries eq '' ) { $tries = '0'; }
212: if ( $maxtries eq '' ) { $maxtries = '2'; }
213: if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
214: }
1.54 www 215:
1.56 www 216: if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
217: (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
1.54 www 218: return ('UNCHECKEDOUT','needs to be checked out');
219: }
220:
221:
1.52 albertel 222: &Apache::lonxml::debug("sending back :$status:$datemsg:");
223: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
1.91 albertel 224: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
1.52 albertel 225: $status='CAN_ANSWER';
226: $datemsg='is closed but you are allowed to view it';
227: }
1.106 ! albertel 228:
1.52 albertel 229: return ($status,$datemsg);
1.20 albertel 230: }
231:
1.41 albertel 232: sub showhash {
1.52 albertel 233: my (%hash) = @_;
1.99 albertel 234: &showhashsubset(\%hash,'.');
1.79 albertel 235: return '';
236: }
237:
1.106 ! albertel 238: sub showarray {
! 239: my ($array)=@_;
! 240: my $string="(";
! 241: foreach my $elm (@{ $array }) {
! 242: if (ref($elm)) {
! 243: if ($elm =~ /ARRAY/ ) {
! 244: $string.=&showarray($elm);
! 245: }
! 246: } else {
! 247: $string.="$elm,"
! 248: }
! 249: }
! 250: chop($string);
! 251: $string.=")";
! 252: return $string;
! 253: }
! 254:
1.79 albertel 255: sub showhashsubset {
256: my ($hash,$keyre) = @_;
1.52 albertel 257: my $resultkey;
1.79 albertel 258: foreach $resultkey (sort keys %$hash) {
259: if ($resultkey =~ /$keyre/) {
260: if (ref($$hash{$resultkey})) {
261: if ($$hash{$resultkey} =~ /ARRAY/ ) {
1.106 ! albertel 262: &Apache::lonxml::debug("$resultkey ---- ".
! 263: &showarray($$hash{$resultkey}));
! 264: } elsif ($$hash{$resultkey} =~ /HASH/ ) {
! 265: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
! 266: &showhashsubset($$hash{$resultkey},'.');
1.79 albertel 267: } else {
1.106 ! albertel 268: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.73 albertel 269: }
270: } else {
1.79 albertel 271: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
1.73 albertel 272: }
273: }
1.52 albertel 274: }
275: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
276: return '';
1.41 albertel 277: }
278:
279: sub setuppermissions {
1.52 albertel 280: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
281: $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
282: return ''
1.41 albertel 283: }
284:
285: sub setupheader {
1.52 albertel 286: my $request=$_[0];
287: if ($ENV{'browser.mathml'}) {
288: $request->content_type('text/xml');
289: } else {
290: $request->content_type('text/html');
291: }
1.68 albertel 292: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
293: &Apache::loncommon::no_cache($request);
294: }
1.52 albertel 295: $request->send_http_header;
296: return OK if $request->header_only;
297: return ''
1.41 albertel 298: }
1.35 albertel 299:
1.47 albertel 300: sub handle_save_or_undo {
1.52 albertel 301: my ($request,$problem,$result) = @_;
1.70 albertel 302: my $file = &Apache::lonnet::filelocation("",$request->uri);
303: my $filebak =$file.".bak";
304: my $filetmp =$file.".tmp";
1.64 albertel 305: my $error=0;
1.52 albertel 306:
307: if ($ENV{'form.Undo'} eq 'undo') {
1.70 albertel 308: my $error=0;
309: if (!copy($file,$filetmp)) { $error=1; }
310: if ((!$error) && (!copy($filebak,$file))) { $error=1; }
311: if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
312: if (!$error) {
313: $request->print("<p><b>Undid changes, Switched $filebak and $file</b></p>");
1.52 albertel 314: } else {
1.70 albertel 315: $request->print("<p><font color=\"red\" size=\"+1\"><b>Unable to undo, unable to switch $filebak and $file</b></font></p>");
1.64 albertel 316: $error=1;
1.52 albertel 317: }
318: } else {
1.70 albertel 319: my $fs=Apache::File->new(">$filebak");
1.52 albertel 320: if (defined($fs)) {
321: print $fs $$problem;
1.70 albertel 322: $request->print("<b>Making Backup to $filebak</b><br />");
1.52 albertel 323: } else {
1.70 albertel 324: $request->print("<font color=\"red\" size=\"+1\"><b>Unable to make backup $filebak</b></font>");
1.64 albertel 325: $error=2;
1.52 albertel 326: }
1.70 albertel 327: my $fh=Apache::File->new(">$file");
1.52 albertel 328: if (defined($fh)) {
329: print $fh $$result;
1.70 albertel 330: $request->print("<b>Saving Modifications to $file</b><br />");
1.47 albertel 331: } else {
1.70 albertel 332: $request->print("<font color=\"red\" size=\"+1\"><b>Unable to write to $file</b></font>");
1.64 albertel 333: $error|=4;
1.47 albertel 334: }
1.52 albertel 335: }
1.64 albertel 336: return $error;
337: }
338:
1.101 albertel 339: sub analyze_header {
340: my ($request) = @_;
341: my $result.='<html><body bgcolor="#FFFFFF">
342: <form name="lonhomework" method="POST" action="'.
343: $ENV{'request.uri'}.'">
344: <input type="submit" name="problemmode" value="EditXML" />
345: <input type="submit" name="problemmode" value="Edit" />
346: <hr />
347: <input type="submit" name="submit" value="View" />
348: <hr />
349: List of possible answers:
350: </form>';
351: $request->print($result);
352: $request->rflush();
353: }
354:
1.74 albertel 355: sub analyze {
1.101 albertel 356: my ($request,$file) = @_;
357: &Apache::lonxml::debug("Analyze");
358: my $result;
359: my %overall;
360: my %allparts;
361: my $rndseed=$ENV{'form.rndseed'};
362: &analyze_header($request);
1.102 albertel 363: for(my $i=1;$i<$ENV{'form.numtoanalyze'}+1;$i++) {
1.101 albertel 364: my $subresult=&Apache::lonnet::ssi($request->uri,
365: ('grade_target' => 'analyze'),
1.102 albertel 366: ('rndseed' => $i));
367: &Apache::lonxml::debug(":$subresult:");
1.101 albertel 368: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
369: my %analyze=&Apache::lonnet::str2hash($subresult);
370: &Apache::lonhomework::showhash(%analyze);
371: my @parts = @{ $analyze{'parts'} };
372: foreach my $part (@parts) {
373: if (!exists($allparts{$part})) {$allparts{$part}=1;};
374: if ($analyze{$part.'.type'} eq 'numericalresponse') {
375: push( @{ $overall{$part.'.answer'} },
376: [@{ $analyze{$part.'.answer'} }]);
377: }
378: }
379: }
380: foreach my $part (keys(%allparts)) {
381: $request->print('<table><tr><td>Part '.$part.'</td></tr>');
382: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
383: $request->print('<tr><td>'.join('</td><td>',@{ $answer }).
384: '</td></tr>');
385: }
386: }
387: &Apache::lonhomework::showhash(%overall);
388: return $result;
1.74 albertel 389: }
390:
1.64 albertel 391: sub editxmlmode {
392: my ($request,$file) = @_;
393: my $result;
394: my $problem=&Apache::lonnet::getfile($file);
395: if ($problem == -1) {
396: &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
397: $problem='';
398: }
399: if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) {
400: my $error=&handle_save_or_undo($request,\$problem,
401: \$ENV{'form.editxmltext'});
402: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
403: }
1.80 albertel 404: &Apache::lonhomework::showhashsubset(\%ENV,'^form');
405: if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
406: &Apache::lonhomework::showhashsubset(\%ENV,'^form');
407: $ENV{'form.problemmode'}='View';
408: &renderpage($request,$file);
409: } else {
410: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1.82 bowersj2 411: my $xml_help = Apache::loncommon::help_open_topic("Problem_Editor_XML_Index");
1.80 albertel 412: if ($cols > 80) { $cols = 80; }
1.89 albertel 413: if ($cols < 70) { $cols = 70; }
414: if ($rows < 20) { $rows = 20; }
1.80 albertel 415: $result.='<html><body bgcolor="#FFFFFF">
1.64 albertel 416: <form name="lonhomework" method="POST" action="'.
417: $ENV{'request.uri'}.'">
418: <input type="hidden" name="problemmode" value="EditXML" />
1.80 albertel 419: <input type="submit" name="problemmode" value="Discard Edits and View" />
1.64 albertel 420: <input type="submit" name="problemmode" value="Edit" />
421: <hr />
422: <input type="submit" name="submit" value="Submit Changes" />
1.80 albertel 423: <input type="submit" name="submit" value="Submit Changes and View" />
1.64 albertel 424: <input type="submit" name="Undo" value="undo" />
425: <hr />
1.82 bowersj2 426: ' . $xml_help . ' Problem Help<br>
1.64 albertel 427: <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
1.73 albertel 428: &HTML::Entities::encode($problem).'</textarea>
1.64 albertel 429: </form></body></html>';
1.80 albertel 430: $request->print($result);
431: }
1.64 albertel 432: return '';
1.47 albertel 433: }
434:
1.41 albertel 435: sub renderpage {
1.52 albertel 436: my ($request,$file) = @_;
437:
438: my (@targets) = &get_target();
1.70 albertel 439: &Apache::lonxml::debug("Running targets ".join(':',@targets));
1.52 albertel 440: foreach my $target (@targets) {
441: #my $t0 = [&gettimeofday()];
442: my $problem=&Apache::lonnet::getfile($file);
443: if ($problem == -1) {
444: &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
445: $problem='';
446: }
447:
448: my %mystyle;
449: my $result = '';
1.97 albertel 450: &Apache::inputtags::initialize_inputtags();
451: &Apache::outputtags::initialize_outputtags();
452: &Apache::edit::initialize_edit();
1.74 albertel 453: if ($target eq 'analyze') { %Apache::lonhomework::anaylze=(); }
1.85 albertel 454: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
455: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');}
1.52 albertel 456:
1.70 albertel 457: &Apache::lonxml::debug("Should be parsing now");
1.78 albertel 458: $result = &Apache::lonxml::xmlparse($request, $target, $problem,
1.98 albertel 459: &setup_vars($target),%mystyle);
1.52 albertel 460:
461: #$request->print("Result follows:");
462: if ($target eq 'modified') {
463: &handle_save_or_undo($request,\$problem,\$result);
464: } else {
1.74 albertel 465: if ($target eq 'analyze') {
466: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
1.75 albertel 467: undef(%Apache::lonhomework::analyze);
1.74 albertel 468: }
1.52 albertel 469: #my $td=&tv_interval($t0);
470: #if ( $Apache::lonxml::debug) {
471: #$result =~ s:</body>::;
472: #$result.="<br />Spent $td seconds processing target $target\n</body>";
473: #}
474: $request->print($result);
475: }
476: #$request->print(":Result ends");
477: #my $td=&tv_interval($t0);
478: }
1.41 albertel 479: }
480:
1.42 albertel 481: # with no arg it returns a HTML <option> list of the template titles
482: # with one arg it returns the filename associated with the arg passed
483: sub get_template_list {
1.52 albertel 484: my ($namewanted,$extension) = @_;
485: my $result;
1.85 albertel 486: my @allnames;
1.52 albertel 487: &Apache::lonxml::debug("Looking for :$extension:");
1.91 albertel 488: foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
1.52 albertel 489: my $name=&Apache::lonnet::metadata($file,'title');
490: if ($namewanted && ($name eq $namewanted)) {
491: $result=$file;
492: last;
493: } else {
1.104 www 494: if ($name) { push (@allnames, $name); }
1.42 albertel 495: }
1.52 albertel 496: }
1.86 albertel 497: if (@allnames && !$result) {
1.85 albertel 498: $result="<option>Select a $extension type</option>\n<option>".
499: join('</option><option>',sort(@allnames)).'</option>';
500: }
1.52 albertel 501: return $result;
1.42 albertel 502: }
503:
504: sub newproblem {
1.65 matthew 505: my ($request) = @_;
506: my $extension=$request->uri;
507: $extension=~s:^.*\.([\w]+)$:$1:;
508: &Apache::lonxml::debug("Looking for :$extension:");
1.85 albertel 509: if ($ENV{'form.template'} &&
510: $ENV{'form.template'} ne "Select a $extension type") {
1.65 matthew 511: use File::Copy;
512: my $file = &get_template_list($ENV{'form.template'},$extension);
513: my $dest = &Apache::lonnet::filelocation("",$request->uri);
514: copy($file,$dest);
515: &renderpage($request,$dest);
516: } elsif($ENV{'form.newfile'}) {
517: # I don't like hard-coded filenames but for now, this will work.
518: use File::Copy;
519: my $templatefilename =
1.66 albertel 520: $request->dir_config('lonIncludes').'/templates/blank.problem';
521: &Apache::lonxml::debug("$templatefilename");
1.65 matthew 522: my $dest = &Apache::lonnet::filelocation("",$request->uri);
523: copy($templatefilename,$dest);
524: &renderpage($request,$dest);
1.85 albertel 525: } else {
1.65 matthew 526: my $templatelist=&get_template_list('',$extension);
527: my $url=$request->uri;
528: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.85 albertel 529: my $instructions;
1.105 www 530: if ($templatelist) { $instructions=", select a template from the pull-down menu below.<br />Then";}
1.65 matthew 531: $request->print(<<ENDNEWPROBLEM);
1.42 albertel 532: <body bgcolor="#FFFFFF">
1.105 www 533: <h1>Creating a new $extension resource</h1>
534: The requested file <tt>$url</tt> currently does not exist.
535: <p>
536: To create a new $extension$instructions click on the "Create $extension" button.
537: </p>
538: <p><form action="$url" method="POST">
1.42 albertel 539: ENDNEWPROBLEM
1.85 albertel 540: if (defined($templatelist)) {
541: $request->print("<select name=\"template\">$templatelist</select>");
542: }
543: $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"Create $extension\" />");
1.105 www 544: $request->print("</form></p></body>");
1.65 matthew 545: }
546: return '';
1.42 albertel 547: }
548:
549: sub view_or_edit_menu {
1.52 albertel 550: my ($request) = @_;
551: my $url=$request->uri;
552: $request->print(<<EDITMENU);
1.42 albertel 553: <body bgcolor="#FFFFFF">
554: <form action="$url" method="POST">
555: Would you like to <input type="submit" name="problemmode" value="View"> or
556: <input type="submit" name="problemmode" value="Edit"> the problem.
557: </form>
558: </body>
559: EDITMENU
560: }
561:
1.41 albertel 562: sub handler {
1.52 albertel 563: #my $t0 = [&gettimeofday()];
564: my $request=$_[0];
1.41 albertel 565:
1.95 albertel 566: # if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;}
567: $Apache::lonxml::debug=$ENV{'user.debug'};
1.41 albertel 568:
569: if (&setupheader($request)) { return OK; }
1.52 albertel 570: $ENV{'request.uri'}=$request->uri;
1.41 albertel 571:
572: #setup permissions
1.52 albertel 573: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
574: $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
575: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
1.71 albertel 576: # some times multiple problemmodes are submitted, need to select
577: # the last one
1.80 albertel 578: &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
1.72 albertel 579: if ( defined($ENV{'form.problemmode'}) &&
1.77 albertel 580: ref($ENV{'form.problemmode'}) ) {
1.80 albertel 581: &Apache::lonxml::debug("Problem Mode ".join(",",@$ENV{'form.problemmode'}));
1.72 albertel 582: my $mode=$ENV{'form.problemmode'}->[-1];
1.71 albertel 583: undef $ENV{'form.problemmode'};
1.72 albertel 584: $ENV{'form.problemmode'}=$mode;
1.71 albertel 585: }
1.64 albertel 586: &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
1.52 albertel 587: my $file=&Apache::lonnet::filelocation("",$request->uri);
588:
589: #check if we know where we are
590: if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) {
591: # if we are browsing we might not be able to know where we are
592: if ($Apache::lonhomework::browse ne 'F') {
593: #should know where we are, so ask
594: $request->internal_redirect('/adm/ambiguous'); return;
1.41 albertel 595: }
1.52 albertel 596: }
1.41 albertel 597:
1.52 albertel 598: if ($ENV{'request.state'} eq "construct") {
1.62 albertel 599: if ($ENV{'form.resetdata'} eq 'Reset Submissions') {
600: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
601: &Apache::lonnet::tmpreset($symb,'',$domain,$name);
602: }
1.52 albertel 603: if ( -e $file ) {
604: if (!(defined $ENV{'form.problemmode'})) {
605: #first visit to problem in construction space
1.64 albertel 606: #&view_or_edit_menu($request);
607: $ENV{'form.problemmode'}='View';
608: &renderpage($request,$file);
609: } elsif ($ENV{'form.problemmode'} eq 'EditXML') {
610: &editxmlmode($request,$file);
1.74 albertel 611: } elsif ($ENV{'form.problemmode'} eq 'Answer Distribution') {
612: &analyze($request,$file);
1.52 albertel 613: } else {
614: &renderpage($request,$file);
1.41 albertel 615: }
616: } else {
1.52 albertel 617: # requested file doesn't exist in contruction space
618: &newproblem($request);
1.41 albertel 619: }
1.52 albertel 620: } else {
621: # just render the page normally outside of construction space
1.74 albertel 622: &Apache::lonxml::debug("not construct");
1.52 albertel 623: &renderpage($request,$file);
624: }
625: #my $td=&tv_interval($t0);
626: #&Apache::lonxml::debug("Spent $td seconds processing");
627: # &Apache::lonhomework::send_footer($request);
628: # always turn off debug messages
629: $Apache::lonxml::debug=0;
630: return OK;
631:
1.1 albertel 632: }
633:
634: 1;
635: __END__
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