Annotation of loncom/homework/lonhomework.pm, revision 1.151
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.151 ! www 4: # $Id: lonhomework.pm,v 1.150 2003/09/19 20:29:29 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();
1.106 albertel 51: use Apache::rankresponse();
1.107 albertel 52: use Apache::matchresponse();
1.137 albertel 53: use Apache::chemresponse();
1.26 www 54: use Apache::Constants qw(:common);
1.73 albertel 55: use HTML::Entities();
1.83 albertel 56: use Apache::loncommon();
1.146 albertel 57: use Apache::lonlocal;
1.47 albertel 58: #use Time::HiRes qw( gettimeofday tv_interval );
1.43 albertel 59:
1.69 harris41 60: BEGIN {
1.145 albertel 61: &Apache::lonxml::register_insert();
1.43 albertel 62: }
63:
1.5 albertel 64: sub get_target {
1.145 albertel 65: if (($ENV{'request.state'} eq "published") ||
66: ($ENV{'request.state'} eq "uploaded")) {
67: if ( defined($ENV{'form.grade_target'} )
68: && ($ENV{'form.grade_target'} eq 'tex')) {
69: return ($ENV{'form.grade_target'});
70: } elsif ( defined($ENV{'form.grade_target'} )
71: && ($Apache::lonhomework::viewgrades eq 'F' )) {
72: return ($ENV{'form.grade_target'});
73: }
74:
1.62 albertel 75: if ( defined($ENV{'form.submitted'}) &&
1.145 albertel 76: ( !defined($ENV{'form.resetdata'})) &&
77: ( !defined($ENV{'form.newrandomization'}))) {
78: return ('grade', 'web');
79: } else {
80: return ('web');
81: }
82: } elsif ($ENV{'request.state'} eq "construct") {
83: if ( defined($ENV{'form.grade_target'}) ) {
84: return ($ENV{'form.grade_target'});
85: }
86: if ( defined($ENV{'form.preview'})) {
87: if ( defined($ENV{'form.submitted'})) {
88: return ('grade', 'web');
89: } else {
90: return ('web');
91: }
92: } else {
1.150 albertel 93: if ( $ENV{'form.problemmode'} eq &mt('View') ||
94: $ENV{'form.problemmode'} eq &mt('Discard Edits and View')) {
1.145 albertel 95: if ( defined($ENV{'form.submitted'}) &&
96: (!defined($ENV{'form.resetdata'})) &&
97: (!defined($ENV{'form.newrandomization'}))) {
98: return ('grade', 'web','answer');
99: } else {
100: return ('web','answer');
101: }
1.150 albertel 102: } elsif ( $ENV{'form.problemmode'} eq &mt('Edit') ) {
1.145 albertel 103: if ( $ENV{'form.submitted'} eq 'edit' ) {
1.150 albertel 104: if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) {
1.145 albertel 105: return ('modified','web','answer');
106: } else {
107: return ('modified','edit');
108: }
109: } else {
110: return ('edit');
111: }
112: } else {
113: return ('web');
114: }
115: }
1.15 albertel 116: }
1.145 albertel 117: return ();
1.5 albertel 118: }
119:
1.3 albertel 120: sub setup_vars {
1.145 albertel 121: my ($target) = @_;
122: return ';'
1.11 albertel 123: # return ';$external::target='.$target.';';
1.2 albertel 124: }
125:
126: sub send_header {
1.145 albertel 127: my ($request)= @_;
128: $request->print(&Apache::lontexconvert::header());
1.16 albertel 129: # $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
1.2 albertel 130: }
131:
1.36 albertel 132: sub createmenu {
1.145 albertel 133: my ($which,$request)=@_;
134: if ($which eq 'grade') {
135: $request->print('<script language="JavaScript">
1.91 albertel 136: hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
1.52 albertel 137: "height=350,width=150,menubar=no");
138: </script>');
1.145 albertel 139: }
1.36 albertel 140: }
141:
1.2 albertel 142: sub send_footer {
1.145 albertel 143: my ($request)= @_;
1.16 albertel 144: # $request->print('</form>');
1.145 albertel 145: $request->print(&Apache::lontexconvert::footer());
1.2 albertel 146: }
147:
1.52 albertel 148: $Apache::lonxml::browse='';
1.53 www 149:
1.92 bowersj2 150: # JB, 9/24/2002: Any changes in this function may require a change
151: # in lonnavmaps::resource::getDateStatus.
1.53 www 152: sub check_access {
1.145 albertel 153: my ($id) = @_;
154: my $date ='';
155: my $status;
156: my $datemsg = '';
157: my $lastdate = '';
158: my $temp;
159: my $type;
160: my $passed;
161:
162: if ($ENV{'request.state'} eq "construct") {
163: &Apache::lonxml::debug("in construction ignoring dates");
164: $status='CAN_ANSWER';
1.146 albertel 165: $datemsg=&mt('is in under construction');
1.145 albertel 166: return ($status,$datemsg);
167: }
168:
169: &Apache::lonxml::debug("checking for part :$id:");
170: &Apache::lonxml::debug("time:".time);
171: foreach $temp ("opendate","duedate","answerdate") {
172: $lastdate = $date;
173: $date = &Apache::lonnet::EXT("resource.$id.$temp");
174: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
175: if ($thistype =~ /^(con_lost|no_such_host)/ ||
176: $date =~ /^(con_lost|no_such_host)/) {
177: $status='UNAVAILABLE';
1.146 albertel 178: $date=&mt("may open later.");
1.145 albertel 179: return($status,$date);
180: }
181: if ($thistype eq 'date_interval') {
182: if ($temp eq 'opendate') {
183: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
184: }
185: if ($temp eq 'answerdate') {
186: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
187: }
188: }
189: &Apache::lonxml::debug("found :$date: for :$temp:");
190: if ($date eq '') {
1.146 albertel 191: $date = &mt("an unknown date"); $passed = 0;
1.145 albertel 192: } elsif ($date eq 'con_lost') {
1.146 albertel 193: $date = &mt("an indeterminate date"); $passed = 0;
1.145 albertel 194: } else {
195: if (time < $date) { $passed = 0; } else { $passed = 1; }
196: $date = localtime $date;
197: }
198: if (!$passed) { $type=$temp; last; }
1.51 harris41 199: }
1.145 albertel 200: &Apache::lonxml::debug("have :$type:$passed:");
201: if ($passed) {
202: $status='SHOW_ANSWER';
203: $datemsg=$date;
204: } elsif ($type eq 'opendate') {
205: $status='CLOSED';
1.146 albertel 206: $datemsg = &mt("will open on")." $date";
1.145 albertel 207: } elsif ($type eq 'duedate') {
208: $status='CAN_ANSWER';
1.146 albertel 209: $datemsg = &mt("is due at")." $date";
1.145 albertel 210: } elsif ($type eq 'answerdate') {
211: $status='CLOSED';
1.146 albertel 212: $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
1.145 albertel 213: }
214: if ($status eq 'CAN_ANSWER') {
215: #check #tries, and if correct.
216: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
217: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
218: if ( $tries eq '' ) { $tries = '0'; }
219: if ( $maxtries eq '' ) { $maxtries = '2'; }
220: if ($tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
221: # if (correct and show prob status) or excused then CANNOT_ANSWER
222: if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
223: &&
224: lc($Apache::lonhomework::problemstatus) ne 'no')
225: ||
226: $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
227: $status = 'CANNOT_ANSWER';
228: }
1.121 albertel 229: }
1.54 www 230:
1.133 albertel 231: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
232: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
233: # return ('UNCHECKEDOUT','needs to be checked out');
234: #}
1.54 www 235:
236:
1.145 albertel 237: &Apache::lonxml::debug("sending back :$status:$datemsg:");
238: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
239: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
240: $status='CAN_ANSWER';
1.146 albertel 241: $datemsg=&mt('is closed but you are allowed to view it');
1.145 albertel 242: }
1.106 albertel 243:
1.145 albertel 244: return ($status,$datemsg);
1.20 albertel 245: }
246:
1.41 albertel 247: sub showhash {
1.145 albertel 248: my (%hash) = @_;
249: &showhashsubset(\%hash,'.');
250: return '';
1.79 albertel 251: }
252:
1.106 albertel 253: sub showarray {
254: my ($array)=@_;
255: my $string="(";
256: foreach my $elm (@{ $array }) {
257: if (ref($elm)) {
258: if ($elm =~ /ARRAY/ ) {
259: $string.=&showarray($elm);
260: }
261: } else {
262: $string.="$elm,"
263: }
264: }
265: chop($string);
266: $string.=")";
267: return $string;
268: }
269:
1.79 albertel 270: sub showhashsubset {
1.145 albertel 271: my ($hash,$keyre) = @_;
272: my $resultkey;
273: foreach $resultkey (sort keys %$hash) {
274: if ($resultkey =~ /$keyre/) {
275: if (ref($$hash{$resultkey})) {
276: if ($$hash{$resultkey} =~ /ARRAY/ ) {
277: &Apache::lonxml::debug("$resultkey ---- ".
278: &showarray($$hash{$resultkey}));
279: } elsif ($$hash{$resultkey} =~ /HASH/ ) {
280: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
281: &showhashsubset($$hash{$resultkey},'.');
282: } else {
283: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
284: }
285: } else {
286: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
287: }
288: }
289: }
290: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
291: return '';
1.41 albertel 292: }
293:
294: sub setuppermissions {
1.145 albertel 295: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
296: my $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
297: if (! $viewgrades &&
298: exists($ENV{'request.course.sec'}) &&
299: $ENV{'request.course.sec'} !~ /^\s*$/) {
300: $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}.
1.127 matthew 301: '/'.$ENV{'request.course.sec'});
1.145 albertel 302: }
303: $Apache::lonhomework::viewgrades = $viewgrades;
304: return ''
1.41 albertel 305: }
306:
307: sub setupheader {
1.120 albertel 308: my $request=$_[0];
309: if ($ENV{'browser.mathml'}) {
1.151 ! www 310: &Apache::loncommon::content_type($request,'text/xml');
1.120 albertel 311: } else {
1.151 ! www 312: &Apache::loncommon::content_type($request,'text/html');
1.120 albertel 313: }
314: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
315: &Apache::loncommon::no_cache($request);
316: }
317: $request->send_http_header;
318: return OK if $request->header_only;
319: return ''
1.41 albertel 320: }
1.35 albertel 321:
1.47 albertel 322: sub handle_save_or_undo {
1.145 albertel 323: my ($request,$problem,$result) = @_;
324: my $file = &Apache::lonnet::filelocation("",$request->uri);
325: my $filebak =$file.".bak";
326: my $filetmp =$file.".tmp";
327: my $error=0;
1.52 albertel 328:
1.150 albertel 329: if ($ENV{'form.Undo'} eq &mt('undo')) {
1.145 albertel 330: my $error=0;
331: if (!copy($file,$filetmp)) { $error=1; }
332: if ((!$error) && (!copy($filebak,$file))) { $error=1; }
333: if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
334: if (!$error) {
1.146 albertel 335: $request->print("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");
1.145 albertel 336: } else {
1.146 albertel 337: $request->print("<p><font color=\"red\" size=\"+1\"><b>".&mt("Unable to undo, unable to switch")." $filebak ".&mt("and")." $file</b></font></p>");
1.145 albertel 338: $error=1;
339: }
1.52 albertel 340: } else {
1.145 albertel 341: my $fs=Apache::File->new(">$filebak");
342: if (defined($fs)) {
343: print $fs $$problem;
1.146 albertel 344: $request->print("<b>".&mt("Making Backup to").
345: " $filebak</b><br />");
1.145 albertel 346: } else {
1.146 albertel 347: $request->print("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");
1.145 albertel 348: $error=2;
349: }
350: my $fh=Apache::File->new(">$file");
351: if (defined($fh)) {
352: print $fh $$result;
1.146 albertel 353: $request->print("<b>".&mt("Saving Modifications to").
354: " $file</b><br />");
1.145 albertel 355: } else {
1.146 albertel 356: $request->print("<font color=\"red\" size=\"+1\"><b>".
357: &mt("Unable to write to")." $file</b></font>");
1.145 albertel 358: $error|=4;
359: }
1.52 albertel 360: }
1.145 albertel 361: return $error;
1.64 albertel 362: }
363:
1.101 albertel 364: sub analyze_header {
365: my ($request) = @_;
1.109 albertel 366: my $result.='<html>
1.146 albertel 367: <head><title>'.&mt("Analyzing a problem").'</title></head>
1.109 albertel 368: <body bgcolor="#FFFFFF">
1.101 albertel 369: <form name="lonhomework" method="POST" action="'.
1.145 albertel 370: $ENV{'request.uri'}.'">
1.146 albertel 371: <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
372: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.101 albertel 373: <hr />
1.146 albertel 374: <input type="submit" name="submit" value="'.&mt("View").'" />
1.101 albertel 375: <hr />
1.146 albertel 376: '.&mt('List of possible answers').':
1.101 albertel 377: </form>';
378: $request->print($result);
379: $request->rflush();
380: }
381:
1.109 albertel 382: sub analyze_footer {
383: my ($request) = @_;
384: my $result='</body></html>';
385: $request->print($result);
386: $request->rflush();
387: }
388:
1.74 albertel 389: sub analyze {
1.101 albertel 390: my ($request,$file) = @_;
391: &Apache::lonxml::debug("Analyze");
392: my $result;
393: my %overall;
394: my %allparts;
395: my $rndseed=$ENV{'form.rndseed'};
396: &analyze_header($request);
1.114 albertel 397: my %prog_state=
1.146 albertel 398: &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
399: &mt('Getting Problem Variants'),
1.114 albertel 400: $ENV{'form.numtoanalyze'});
1.102 albertel 401: for(my $i=1;$i<$ENV{'form.numtoanalyze'}+1;$i++) {
1.114 albertel 402: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
1.146 albertel 403: &mt('last problem'));
1.101 albertel 404: my $subresult=&Apache::lonnet::ssi($request->uri,
405: ('grade_target' => 'analyze'),
1.130 albertel 406: ('rndseed' => $i+$rndseed));
1.101 albertel 407: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
408: my %analyze=&Apache::lonnet::str2hash($subresult);
1.114 albertel 409: my @parts;
410: if (defined(@{ $analyze{'parts'} })) {
411: @parts=@{ $analyze{'parts'} };
412: }
1.101 albertel 413: foreach my $part (@parts) {
414: if (!exists($allparts{$part})) {$allparts{$part}=1;};
1.109 albertel 415: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
416: $analyze{$part.'.type'} eq 'stringresponse' ||
417: $analyze{$part.'.type'} eq 'formularesponse' ) {
1.101 albertel 418: push( @{ $overall{$part.'.answer'} },
419: [@{ $analyze{$part.'.answer'} }]);
420: }
421: }
422: }
1.114 albertel 423: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
1.146 albertel 424: &mt('Analyzing Results'));
1.134 albertel 425: foreach my $part (sort(keys(%allparts))) {
1.109 albertel 426: if (defined(@{ $overall{$part.'.answer'} })) {
1.132 albertel 427: my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] });
1.146 albertel 428: $request->print('<table><tr><td colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</td></tr>');
1.130 albertel 429: my %frequency;
1.109 albertel 430: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
1.132 albertel 431: $frequency{join("\0",@{ $answer })}++;
1.130 albertel 432: }
1.146 albertel 433: $request->print('<tr><td colspan="'.($num_cols).'">'.&mt('Answer').'</td><td>'.&mt('Frequency').'</td></tr>');
1.132 albertel 434: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
435: $request->print('<tr><td align="right">'.
436: join('</td><td align="right">',split("\0",$answer)).
1.130 albertel 437: '</td><td>('.$frequency{$answer}.
438: ')</td></tr>');
1.109 albertel 439: }
440: $request->print('</table>');
441: } else {
1.146 albertel 442: $request->print('<p>'.&mt('Part').' '.$part.' '.
443: &mt('is not analyzable at this time').'</p>');
1.101 albertel 444: }
445: }
1.130 albertel 446: if (scalar(keys(%allparts)) == 0 ) {
1.149 www 447: $request->print('<p>'.&mt('Found no analyzable parts in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
1.130 albertel 448: }
1.114 albertel 449: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1.109 albertel 450: &analyze_footer($request);
1.101 albertel 451: &Apache::lonhomework::showhash(%overall);
452: return $result;
1.74 albertel 453: }
454:
1.64 albertel 455: sub editxmlmode {
1.145 albertel 456: my ($request,$file) = @_;
457: my $result;
458: my $problem=&Apache::lonnet::getfile($file);
459: if ($problem eq -1) {
1.146 albertel 460: &Apache::lonxml::error("<b> ".&mt('Unable to find').
461: " <i>$file</i></b>");
1.145 albertel 462: $problem='';
463: }
464: if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) {
465: my $error=&handle_save_or_undo($request,\$problem,
466: \$ENV{'form.editxmltext'});
467: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
468: }
1.80 albertel 469: &Apache::lonhomework::showhashsubset(\%ENV,'^form');
1.150 albertel 470: if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) {
1.145 albertel 471: &Apache::lonhomework::showhashsubset(\%ENV,'^form');
472: $ENV{'form.problemmode'}='View';
473: &renderpage($request,$file);
474: } else {
475: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
476: my $xml_help = Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
477: "Problem Editing Help");
478: if ($cols > 80) { $cols = 80; }
479: if ($cols < 70) { $cols = 70; }
480: if ($rows < 20) { $rows = 20; }
481: $result.='<html><body bgcolor="#FFFFFF">
1.64 albertel 482: <form name="lonhomework" method="POST" action="'.
1.145 albertel 483: $ENV{'request.uri'}.'">
1.146 albertel 484: <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
485: <input type="submit" name="problemmode" value="'.&mt('Discard Edits and View').'" />
486: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.64 albertel 487: <hr />
1.146 albertel 488: <input type="submit" name="submit" value="'.&mt('Submit Changes').'" />
489: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />
490: <input type="submit" name="Undo" value="'.&mt('undo').'" />
1.64 albertel 491: <hr />
1.110 albertel 492: ' . $xml_help . '
1.64 albertel 493: <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
1.145 albertel 494: &HTML::Entities::encode($problem).'</textarea>
1.64 albertel 495: </form></body></html>';
1.145 albertel 496: $request->print($result);
497: }
498: return '';
1.47 albertel 499: }
500:
1.41 albertel 501: sub renderpage {
1.145 albertel 502: my ($request,$file) = @_;
1.52 albertel 503:
1.145 albertel 504: my (@targets) = &get_target();
505: &Apache::lonxml::debug("Running targets ".join(':',@targets));
506: foreach my $target (@targets) {
507: #my $t0 = [&gettimeofday()];
508: my $problem=&Apache::lonnet::getfile($file);
509: if ($problem eq -1) {
1.146 albertel 510: &Apache::lonxml::error("<b> ".&mt('Unable to find')." <i>$file</i></b>");
1.145 albertel 511: $problem='';
512: }
1.52 albertel 513:
1.145 albertel 514: my %mystyle;
515: my $result = '';
516: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
517: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
518: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');}
519:
520: &Apache::lonxml::debug("Should be parsing now");
521: $result = &Apache::lonxml::xmlparse($request, $target, $problem,
522: &setup_vars($target),%mystyle);
523: undef($Apache::lonhomework::parsing_a_problem);
524: #$request->print("Result follows:");
525: if ($target eq 'modified') {
526: &handle_save_or_undo($request,\$problem,\$result);
527: } else {
528: if ($target eq 'analyze') {
529: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
530: undef(%Apache::lonhomework::analyze);
531: }
532: #my $td=&tv_interval($t0);
533: #if ( $Apache::lonxml::debug) {
534: #$result =~ s:</body>::;
535: #$result.="<br />Spent $td seconds processing target $target\n</body>";
536: #}
537: $request->print($result);
538: $request->rflush();
539: }
540: #$request->print(":Result ends");
541: #my $td=&tv_interval($t0);
1.52 albertel 542: }
1.41 albertel 543: }
544:
1.42 albertel 545: # with no arg it returns a HTML <option> list of the template titles
546: # with one arg it returns the filename associated with the arg passed
547: sub get_template_list {
1.145 albertel 548: my ($namewanted,$extension) = @_;
549: my $result;
550: my @allnames;
551: &Apache::lonxml::debug("Looking for :$extension:");
552: foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
553: my $name=&Apache::lonnet::metadata($file,'title');
554: if ($namewanted && ($name eq $namewanted)) {
555: $result=$file;
556: last;
557: } else {
558: if ($name) { push (@allnames, $name); }
559: }
560: }
561: if (@allnames && !$result) {
1.146 albertel 562: $result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".
1.145 albertel 563: join('</option><option>',sort(@allnames)).'</option>';
1.42 albertel 564: }
1.145 albertel 565: return $result;
1.42 albertel 566: }
567:
568: sub newproblem {
1.65 matthew 569: my ($request) = @_;
570: my $extension=$request->uri;
571: $extension=~s:^.*\.([\w]+)$:$1:;
572: &Apache::lonxml::debug("Looking for :$extension:");
1.131 albertel 573: my $templatelist=&get_template_list('',$extension);
1.85 albertel 574: if ($ENV{'form.template'} &&
1.128 albertel 575: $ENV{'form.template'} ne "Select a $extension template") {
1.65 matthew 576: use File::Copy;
577: my $file = &get_template_list($ENV{'form.template'},$extension);
578: my $dest = &Apache::lonnet::filelocation("",$request->uri);
579: copy($file,$dest);
580: &renderpage($request,$dest);
1.131 albertel 581: } elsif($ENV{'form.newfile'} && !$templatelist) {
582: # I don't like hard-coded filenames but for now, this will work.
583: use File::Copy;
584: my $templatefilename =
585: $request->dir_config('lonIncludes').'/templates/blank.problem';
586: &Apache::lonxml::debug("$templatefilename");
587: my $dest = &Apache::lonnet::filelocation("",$request->uri);
588: copy($templatefilename,$dest);
589: &renderpage($request,$dest);
1.85 albertel 590: } else {
1.65 matthew 591: my $url=$request->uri;
592: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.128 albertel 593: my $errormsg;
594: if ($ENV{'form.newfile'}) {
1.146 albertel 595: $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";
1.128 albertel 596: }
1.85 albertel 597: my $instructions;
1.146 albertel 598: if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}
1.147 albertel 599: my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',
1.146 albertel 600: 'resource' => 'resource',
601: 'requested' => 'The requested file',
602: 'not exist' => 'currently does not exist',
603: 'createnew' => 'To create a new',
604: 'click' => 'click on the',
605: 'Create' => 'Create',
606: 'button' => 'button');
1.65 matthew 607: $request->print(<<ENDNEWPROBLEM);
1.42 albertel 608: <body bgcolor="#FFFFFF">
1.148 albertel 609: <h1>$lt{'create'} $extension $lt{'resource'}</h1>
1.128 albertel 610: $errormsg
1.146 albertel 611: $lt{'requested'} <tt>$url</tt> $lt{'not exist'}.
1.105 www 612: <p>
1.146 albertel 613: <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>
1.105 www 614: </p>
615: <p><form action="$url" method="POST">
1.42 albertel 616: ENDNEWPROBLEM
1.85 albertel 617: if (defined($templatelist)) {
618: $request->print("<select name=\"template\">$templatelist</select>");
619: }
1.146 albertel 620: $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />");
1.105 www 621: $request->print("</form></p></body>");
1.65 matthew 622: }
623: return '';
1.42 albertel 624: }
625:
626: sub view_or_edit_menu {
1.145 albertel 627: my ($request) = @_;
628: my $url=$request->uri;
1.147 albertel 629: my %lt=&Apache::lonlocal::texthash( 'would' => 'Would you like to',
1.146 albertel 630: 'view' => 'View',
631: 'Edit' => 'edit',
632: 'or' => 'or',
633: 'the problem' => 'the problem');
1.145 albertel 634: $request->print(<<EDITMENU);
1.42 albertel 635: <body bgcolor="#FFFFFF">
636: <form action="$url" method="POST">
1.146 albertel 637: $lt{'would'} <input type="submit" name="problemmode" value="<{'view'}">
638: <{'or'} <input type="submit" name="problemmode" value="<{'Edit'}">
639: <{'the problem'}.
1.42 albertel 640: </form>
641: </body>
642: EDITMENU
643: }
644:
1.41 albertel 645: sub handler {
1.145 albertel 646: #my $t0 = [&gettimeofday()];
647: my $request=$_[0];
648:
649: $Apache::lonxml::debug=$ENV{'user.debug'};
1.41 albertel 650:
1.145 albertel 651: if (&setupheader($request)) { return OK; }
652: $ENV{'request.uri'}=$request->uri;
1.41 albertel 653:
1.145 albertel 654: #setup permissions
655: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
656: $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
657: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
658: # some times multiple problemmodes are submitted, need to select
659: # the last one
660: &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
661: if ( defined($ENV{'form.problemmode'}) &&
662: ref($ENV{'form.problemmode'}) ) {
663: &Apache::lonxml::debug("Problem Mode ".join(",",@$ENV{'form.problemmode'}));
664: my $mode=$ENV{'form.problemmode'}->[-1];
665: undef $ENV{'form.problemmode'};
666: $ENV{'form.problemmode'}=$mode;
667: }
668: &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
669: my $file=&Apache::lonnet::filelocation("",$request->uri);
670:
671: #check if we know where we are
672: if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) {
673: # if we are browsing we might not be able to know where we are
674: if ($Apache::lonhomework::browse ne 'F') {
675: #should know where we are, so ask
676: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
677: &Apache::lonnet::cleanenv();
678: }
679: $request->internal_redirect('/adm/ambiguous'); return;
680: }
681: }
1.41 albertel 682:
1.145 albertel 683: my ($symb) = &Apache::lonxml::whichuser();
684: &Apache::lonxml::debug('symb is '.$symb);
685: if ($ENV{'request.state'} eq "construct" || $symb eq '') {
1.150 albertel 686: if ($ENV{'form.resetdata'} eq &mt('Reset Submissions') ||
687: $ENV{'form.resetdata'} eq &mt('New Problem Variation') ||
688: $ENV{'form.newrandomization'} eq &mt('New Randomization')) {
1.145 albertel 689: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
690: &Apache::lonnet::tmpreset($symb,'',$domain,$name);
691: &Apache::lonxml::debug("Attempt reset");
692: }
693: }
694: if ($ENV{'request.state'} eq "construct") {
695: if ( -e $file ) {
696: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
697: ['problemmode']);
698: if (!(defined $ENV{'form.problemmode'})) {
699: #first visit to problem in construction space
700: #&view_or_edit_menu($request);
701: $ENV{'form.problemmode'}='View';
702: &renderpage($request,$file);
1.150 albertel 703: } elsif ($ENV{'form.problemmode'} eq &mt('EditXML')) {
1.145 albertel 704: &editxmlmode($request,$file);
1.150 albertel 705: } elsif ($ENV{'form.problemmode'} eq &mt('Calculate answers')) {
1.145 albertel 706: &analyze($request,$file);
707: } else {
708: &renderpage($request,$file);
709: }
710: } else {
711: # requested file doesn't exist in contruction space
712: &newproblem($request);
713: }
714: } else {
715: # just render the page normally outside of construction space
716: &Apache::lonxml::debug("not construct");
1.52 albertel 717: &renderpage($request,$file);
1.41 albertel 718: }
1.145 albertel 719: #my $td=&tv_interval($t0);
720: #&Apache::lonxml::debug("Spent $td seconds processing");
721: # &Apache::lonhomework::send_footer($request);
722: # always turn off debug messages
723: $Apache::lonxml::debug=0;
724: return OK;
1.52 albertel 725:
1.1 albertel 726: }
727:
728: 1;
729: __END__
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