Annotation of loncom/homework/lonhomework.pm, revision 1.146
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.146 ! albertel 4: # $Id: lonhomework.pm,v 1.145 2003/09/18 19:59:15 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 {
93: if ( $ENV{'form.problemmode'} eq 'View' ||
94: $ENV{'form.problemmode'} eq 'Discard Edits and View') {
95: if ( defined($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: }
102: } elsif ( $ENV{'form.problemmode'} eq 'Edit' ) {
103: if ( $ENV{'form.submitted'} eq 'edit' ) {
104: if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
105: return ('modified','web','answer');
106: } else {
107: return ('modified','edit');
108: }
109: } else {
110: return ('edit');
111: }
112: } else {
113: return ('web');
114: }
115: }
1.15 albertel 116: }
1.145 albertel 117: return ();
1.5 albertel 118: }
119:
1.3 albertel 120: sub setup_vars {
1.145 albertel 121: my ($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'}) {
310: $request->content_type('text/xml');
311: } else {
312: $request->content_type('text/html');
313: }
314: $request->content_encoding('UTF-8');
315: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
316: &Apache::loncommon::no_cache($request);
317: }
318: $request->send_http_header;
319: return OK if $request->header_only;
320: return ''
1.41 albertel 321: }
1.35 albertel 322:
1.47 albertel 323: sub handle_save_or_undo {
1.145 albertel 324: my ($request,$problem,$result) = @_;
325: my $file = &Apache::lonnet::filelocation("",$request->uri);
326: my $filebak =$file.".bak";
327: my $filetmp =$file.".tmp";
328: my $error=0;
1.52 albertel 329:
1.145 albertel 330: if ($ENV{'form.Undo'} eq 'undo') {
331: my $error=0;
332: if (!copy($file,$filetmp)) { $error=1; }
333: if ((!$error) && (!copy($filebak,$file))) { $error=1; }
334: if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
335: if (!$error) {
1.146 ! albertel 336: $request->print("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");
1.145 albertel 337: } else {
1.146 ! albertel 338: $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 339: $error=1;
340: }
1.52 albertel 341: } else {
1.145 albertel 342: my $fs=Apache::File->new(">$filebak");
343: if (defined($fs)) {
344: print $fs $$problem;
1.146 ! albertel 345: $request->print("<b>".&mt("Making Backup to").
! 346: " $filebak</b><br />");
1.145 albertel 347: } else {
1.146 ! albertel 348: $request->print("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");
1.145 albertel 349: $error=2;
350: }
351: my $fh=Apache::File->new(">$file");
352: if (defined($fh)) {
353: print $fh $$result;
1.146 ! albertel 354: $request->print("<b>".&mt("Saving Modifications to").
! 355: " $file</b><br />");
1.145 albertel 356: } else {
1.146 ! albertel 357: $request->print("<font color=\"red\" size=\"+1\"><b>".
! 358: &mt("Unable to write to")." $file</b></font>");
1.145 albertel 359: $error|=4;
360: }
1.52 albertel 361: }
1.145 albertel 362: return $error;
1.64 albertel 363: }
364:
1.101 albertel 365: sub analyze_header {
366: my ($request) = @_;
1.109 albertel 367: my $result.='<html>
1.146 ! albertel 368: <head><title>'.&mt("Analyzing a problem").'</title></head>
1.109 albertel 369: <body bgcolor="#FFFFFF">
1.101 albertel 370: <form name="lonhomework" method="POST" action="'.
1.145 albertel 371: $ENV{'request.uri'}.'">
1.146 ! albertel 372: <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
! 373: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.101 albertel 374: <hr />
1.146 ! albertel 375: <input type="submit" name="submit" value="'.&mt("View").'" />
1.101 albertel 376: <hr />
1.146 ! albertel 377: '.&mt('List of possible answers').':
1.101 albertel 378: </form>';
379: $request->print($result);
380: $request->rflush();
381: }
382:
1.109 albertel 383: sub analyze_footer {
384: my ($request) = @_;
385: my $result='</body></html>';
386: $request->print($result);
387: $request->rflush();
388: }
389:
1.74 albertel 390: sub analyze {
1.101 albertel 391: my ($request,$file) = @_;
392: &Apache::lonxml::debug("Analyze");
393: my $result;
394: my %overall;
395: my %allparts;
396: my $rndseed=$ENV{'form.rndseed'};
397: &analyze_header($request);
1.114 albertel 398: my %prog_state=
1.146 ! albertel 399: &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
! 400: &mt('Getting Problem Variants'),
1.114 albertel 401: $ENV{'form.numtoanalyze'});
1.102 albertel 402: for(my $i=1;$i<$ENV{'form.numtoanalyze'}+1;$i++) {
1.114 albertel 403: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
1.146 ! albertel 404: &mt('last problem'));
1.101 albertel 405: my $subresult=&Apache::lonnet::ssi($request->uri,
406: ('grade_target' => 'analyze'),
1.130 albertel 407: ('rndseed' => $i+$rndseed));
1.101 albertel 408: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
409: my %analyze=&Apache::lonnet::str2hash($subresult);
1.114 albertel 410: my @parts;
411: if (defined(@{ $analyze{'parts'} })) {
412: @parts=@{ $analyze{'parts'} };
413: }
1.101 albertel 414: foreach my $part (@parts) {
415: if (!exists($allparts{$part})) {$allparts{$part}=1;};
1.109 albertel 416: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
417: $analyze{$part.'.type'} eq 'stringresponse' ||
418: $analyze{$part.'.type'} eq 'formularesponse' ) {
1.101 albertel 419: push( @{ $overall{$part.'.answer'} },
420: [@{ $analyze{$part.'.answer'} }]);
421: }
422: }
423: }
1.114 albertel 424: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
1.146 ! albertel 425: &mt('Analyzing Results'));
1.134 albertel 426: foreach my $part (sort(keys(%allparts))) {
1.109 albertel 427: if (defined(@{ $overall{$part.'.answer'} })) {
1.132 albertel 428: my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] });
1.146 ! albertel 429: $request->print('<table><tr><td colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</td></tr>');
1.130 albertel 430: my %frequency;
1.109 albertel 431: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
1.132 albertel 432: $frequency{join("\0",@{ $answer })}++;
1.130 albertel 433: }
1.146 ! albertel 434: $request->print('<tr><td colspan="'.($num_cols).'">'.&mt('Answer').'</td><td>'.&mt('Frequency').'</td></tr>');
1.132 albertel 435: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
436: $request->print('<tr><td align="right">'.
437: join('</td><td align="right">',split("\0",$answer)).
1.130 albertel 438: '</td><td>('.$frequency{$answer}.
439: ')</td></tr>');
1.109 albertel 440: }
441: $request->print('</table>');
442: } else {
1.146 ! albertel 443: $request->print('<p>'.&mt('Part').' '.$part.' '.
! 444: &mt('is not analyzable at this time').'</p>');
1.101 albertel 445: }
446: }
1.130 albertel 447: if (scalar(keys(%allparts)) == 0 ) {
1.146 ! albertel 448: $request->print('<p>'.&mt('Found no analyzable parts in this problem,
1.130 albertel 449: currently only Numerical, Formula and String response
1.146 ! albertel 450: styles are supported.').'</p>');
1.130 albertel 451: }
1.114 albertel 452: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1.109 albertel 453: &analyze_footer($request);
1.101 albertel 454: &Apache::lonhomework::showhash(%overall);
455: return $result;
1.74 albertel 456: }
457:
1.64 albertel 458: sub editxmlmode {
1.145 albertel 459: my ($request,$file) = @_;
460: my $result;
461: my $problem=&Apache::lonnet::getfile($file);
462: if ($problem eq -1) {
1.146 ! albertel 463: &Apache::lonxml::error("<b> ".&mt('Unable to find').
! 464: " <i>$file</i></b>");
1.145 albertel 465: $problem='';
466: }
467: if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) {
468: my $error=&handle_save_or_undo($request,\$problem,
469: \$ENV{'form.editxmltext'});
470: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
471: }
1.80 albertel 472: &Apache::lonhomework::showhashsubset(\%ENV,'^form');
1.145 albertel 473: if ( $ENV{'form.submit'} eq 'Submit Changes and View' ) {
474: &Apache::lonhomework::showhashsubset(\%ENV,'^form');
475: $ENV{'form.problemmode'}='View';
476: &renderpage($request,$file);
477: } else {
478: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
479: my $xml_help = Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
480: "Problem Editing Help");
481: if ($cols > 80) { $cols = 80; }
482: if ($cols < 70) { $cols = 70; }
483: if ($rows < 20) { $rows = 20; }
484: $result.='<html><body bgcolor="#FFFFFF">
1.64 albertel 485: <form name="lonhomework" method="POST" action="'.
1.145 albertel 486: $ENV{'request.uri'}.'">
1.146 ! albertel 487: <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
! 488: <input type="submit" name="problemmode" value="'.&mt('Discard Edits and View').'" />
! 489: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.64 albertel 490: <hr />
1.146 ! albertel 491: <input type="submit" name="submit" value="'.&mt('Submit Changes').'" />
! 492: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />
! 493: <input type="submit" name="Undo" value="'.&mt('undo').'" />
1.64 albertel 494: <hr />
1.110 albertel 495: ' . $xml_help . '
1.64 albertel 496: <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
1.145 albertel 497: &HTML::Entities::encode($problem).'</textarea>
1.64 albertel 498: </form></body></html>';
1.145 albertel 499: $request->print($result);
500: }
501: return '';
1.47 albertel 502: }
503:
1.41 albertel 504: sub renderpage {
1.145 albertel 505: my ($request,$file) = @_;
1.52 albertel 506:
1.145 albertel 507: my (@targets) = &get_target();
508: &Apache::lonxml::debug("Running targets ".join(':',@targets));
509: foreach my $target (@targets) {
510: #my $t0 = [&gettimeofday()];
511: my $problem=&Apache::lonnet::getfile($file);
512: if ($problem eq -1) {
1.146 ! albertel 513: &Apache::lonxml::error("<b> ".&mt('Unable to find')." <i>$file</i></b>");
1.145 albertel 514: $problem='';
515: }
1.52 albertel 516:
1.145 albertel 517: my %mystyle;
518: my $result = '';
519: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
520: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
521: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');}
522:
523: &Apache::lonxml::debug("Should be parsing now");
524: $result = &Apache::lonxml::xmlparse($request, $target, $problem,
525: &setup_vars($target),%mystyle);
526: undef($Apache::lonhomework::parsing_a_problem);
527: #$request->print("Result follows:");
528: if ($target eq 'modified') {
529: &handle_save_or_undo($request,\$problem,\$result);
530: } else {
531: if ($target eq 'analyze') {
532: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
533: undef(%Apache::lonhomework::analyze);
534: }
535: #my $td=&tv_interval($t0);
536: #if ( $Apache::lonxml::debug) {
537: #$result =~ s:</body>::;
538: #$result.="<br />Spent $td seconds processing target $target\n</body>";
539: #}
540: $request->print($result);
541: $request->rflush();
542: }
543: #$request->print(":Result ends");
544: #my $td=&tv_interval($t0);
1.52 albertel 545: }
1.41 albertel 546: }
547:
1.42 albertel 548: # with no arg it returns a HTML <option> list of the template titles
549: # with one arg it returns the filename associated with the arg passed
550: sub get_template_list {
1.145 albertel 551: my ($namewanted,$extension) = @_;
552: my $result;
553: my @allnames;
554: &Apache::lonxml::debug("Looking for :$extension:");
555: foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
556: my $name=&Apache::lonnet::metadata($file,'title');
557: if ($namewanted && ($name eq $namewanted)) {
558: $result=$file;
559: last;
560: } else {
561: if ($name) { push (@allnames, $name); }
562: }
563: }
564: if (@allnames && !$result) {
1.146 ! albertel 565: $result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".
1.145 albertel 566: join('</option><option>',sort(@allnames)).'</option>';
1.42 albertel 567: }
1.145 albertel 568: return $result;
1.42 albertel 569: }
570:
571: sub newproblem {
1.65 matthew 572: my ($request) = @_;
573: my $extension=$request->uri;
574: $extension=~s:^.*\.([\w]+)$:$1:;
575: &Apache::lonxml::debug("Looking for :$extension:");
1.131 albertel 576: my $templatelist=&get_template_list('',$extension);
1.85 albertel 577: if ($ENV{'form.template'} &&
1.128 albertel 578: $ENV{'form.template'} ne "Select a $extension template") {
1.65 matthew 579: use File::Copy;
580: my $file = &get_template_list($ENV{'form.template'},$extension);
581: my $dest = &Apache::lonnet::filelocation("",$request->uri);
582: copy($file,$dest);
583: &renderpage($request,$dest);
1.131 albertel 584: } elsif($ENV{'form.newfile'} && !$templatelist) {
585: # I don't like hard-coded filenames but for now, this will work.
586: use File::Copy;
587: my $templatefilename =
588: $request->dir_config('lonIncludes').'/templates/blank.problem';
589: &Apache::lonxml::debug("$templatefilename");
590: my $dest = &Apache::lonnet::filelocation("",$request->uri);
591: copy($templatefilename,$dest);
592: &renderpage($request,$dest);
1.85 albertel 593: } else {
1.65 matthew 594: my $url=$request->uri;
595: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.128 albertel 596: my $errormsg;
597: if ($ENV{'form.newfile'}) {
1.146 ! albertel 598: $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";
1.128 albertel 599: }
1.85 albertel 600: my $instructions;
1.146 ! albertel 601: if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}
! 602: my %lt=&texthash( 'create' => 'Creating a new',
! 603: 'resource' => 'resource',
! 604: 'requested' => 'The requested file',
! 605: 'not exist' => 'currently does not exist',
! 606: 'createnew' => 'To create a new',
! 607: 'click' => 'click on the',
! 608: 'Create' => 'Create',
! 609: 'button' => 'button');
1.65 matthew 610: $request->print(<<ENDNEWPROBLEM);
1.42 albertel 611: <body bgcolor="#FFFFFF">
1.146 ! albertel 612: <h1>$lt{'create'} $extension <{'resource'}</h1>
1.128 albertel 613: $errormsg
1.146 ! albertel 614: $lt{'requested'} <tt>$url</tt> $lt{'not exist'}.
1.105 www 615: <p>
1.146 ! albertel 616: <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>
1.105 www 617: </p>
618: <p><form action="$url" method="POST">
1.42 albertel 619: ENDNEWPROBLEM
1.85 albertel 620: if (defined($templatelist)) {
621: $request->print("<select name=\"template\">$templatelist</select>");
622: }
1.146 ! albertel 623: $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />");
1.105 www 624: $request->print("</form></p></body>");
1.65 matthew 625: }
626: return '';
1.42 albertel 627: }
628:
629: sub view_or_edit_menu {
1.145 albertel 630: my ($request) = @_;
631: my $url=$request->uri;
1.146 ! albertel 632: my %lt=&texthash( 'would' => 'Would you like to',
! 633: 'view' => 'View',
! 634: 'Edit' => 'edit',
! 635: 'or' => 'or',
! 636: 'the problem' => 'the problem');
1.145 albertel 637: $request->print(<<EDITMENU);
1.42 albertel 638: <body bgcolor="#FFFFFF">
639: <form action="$url" method="POST">
1.146 ! albertel 640: $lt{'would'} <input type="submit" name="problemmode" value="<{'view'}">
! 641: <{'or'} <input type="submit" name="problemmode" value="<{'Edit'}">
! 642: <{'the problem'}.
1.42 albertel 643: </form>
644: </body>
645: EDITMENU
646: }
647:
1.41 albertel 648: sub handler {
1.145 albertel 649: #my $t0 = [&gettimeofday()];
650: my $request=$_[0];
651:
652: $Apache::lonxml::debug=$ENV{'user.debug'};
1.41 albertel 653:
1.145 albertel 654: if (&setupheader($request)) { return OK; }
655: $ENV{'request.uri'}=$request->uri;
1.41 albertel 656:
1.145 albertel 657: #setup permissions
658: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
659: $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
660: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
661: # some times multiple problemmodes are submitted, need to select
662: # the last one
663: &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
664: if ( defined($ENV{'form.problemmode'}) &&
665: ref($ENV{'form.problemmode'}) ) {
666: &Apache::lonxml::debug("Problem Mode ".join(",",@$ENV{'form.problemmode'}));
667: my $mode=$ENV{'form.problemmode'}->[-1];
668: undef $ENV{'form.problemmode'};
669: $ENV{'form.problemmode'}=$mode;
670: }
671: &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
672: my $file=&Apache::lonnet::filelocation("",$request->uri);
673:
674: #check if we know where we are
675: if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) {
676: # if we are browsing we might not be able to know where we are
677: if ($Apache::lonhomework::browse ne 'F') {
678: #should know where we are, so ask
679: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
680: &Apache::lonnet::cleanenv();
681: }
682: $request->internal_redirect('/adm/ambiguous'); return;
683: }
684: }
1.41 albertel 685:
1.145 albertel 686: my ($symb) = &Apache::lonxml::whichuser();
687: &Apache::lonxml::debug('symb is '.$symb);
688: if ($ENV{'request.state'} eq "construct" || $symb eq '') {
689: if ($ENV{'form.resetdata'} eq 'Reset Submissions' ||
690: $ENV{'form.resetdata'} eq 'New Problem Variation' ||
691: $ENV{'form.newrandomization'} eq 'New Randomization') {
692: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
693: &Apache::lonnet::tmpreset($symb,'',$domain,$name);
694: &Apache::lonxml::debug("Attempt reset");
695: }
696: }
697: if ($ENV{'request.state'} eq "construct") {
698: if ( -e $file ) {
699: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
700: ['problemmode']);
701: if (!(defined $ENV{'form.problemmode'})) {
702: #first visit to problem in construction space
703: #&view_or_edit_menu($request);
704: $ENV{'form.problemmode'}='View';
705: &renderpage($request,$file);
706: } elsif ($ENV{'form.problemmode'} eq 'EditXML') {
707: &editxmlmode($request,$file);
708: } elsif ($ENV{'form.problemmode'} eq 'Calculate answers') {
709: &analyze($request,$file);
710: } else {
711: &renderpage($request,$file);
712: }
713: } else {
714: # requested file doesn't exist in contruction space
715: &newproblem($request);
716: }
717: } else {
718: # just render the page normally outside of construction space
719: &Apache::lonxml::debug("not construct");
1.52 albertel 720: &renderpage($request,$file);
1.41 albertel 721: }
1.145 albertel 722: #my $td=&tv_interval($t0);
723: #&Apache::lonxml::debug("Spent $td seconds processing");
724: # &Apache::lonhomework::send_footer($request);
725: # always turn off debug messages
726: $Apache::lonxml::debug=0;
727: return OK;
1.52 albertel 728:
1.1 albertel 729: }
730:
731: 1;
732: __END__
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