Annotation of loncom/homework/lonhomework.pm, revision 1.165
1.63 albertel 1: # The LearningOnline Network with CAPA
1.52 albertel 2: # The LON-CAPA Homework handler
1.63 albertel 3: #
1.165 ! albertel 4: # $Id: lonhomework.pm,v 1.164 2004/02/13 21:27:22 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/
1.159 www 27:
1.1 albertel 28:
29: package Apache::lonhomework;
30: use strict;
1.73 albertel 31: use Apache::style();
32: use Apache::lonxml();
33: use Apache::lonnet();
34: use Apache::lonplot();
35: use Apache::inputtags();
36: use Apache::structuretags();
37: use Apache::randomlabel();
38: use Apache::response();
39: use Apache::hint();
40: use Apache::outputtags();
1.83 albertel 41: use Apache::caparesponse();
42: use Apache::radiobuttonresponse();
43: use Apache::optionresponse();
44: use Apache::imageresponse();
45: use Apache::essayresponse();
46: use Apache::externalresponse();
1.106 albertel 47: use Apache::rankresponse();
1.107 albertel 48: use Apache::matchresponse();
1.137 albertel 49: use Apache::chemresponse();
1.26 www 50: use Apache::Constants qw(:common);
1.73 albertel 51: use HTML::Entities();
1.83 albertel 52: use Apache::loncommon();
1.146 albertel 53: use Apache::lonlocal;
1.47 albertel 54: #use Time::HiRes qw( gettimeofday tv_interval );
1.43 albertel 55:
1.69 harris41 56: BEGIN {
1.145 albertel 57: &Apache::lonxml::register_insert();
1.43 albertel 58: }
59:
1.5 albertel 60: sub get_target {
1.145 albertel 61: if (($ENV{'request.state'} eq "published") ||
62: ($ENV{'request.state'} eq "uploaded")) {
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'} )
67: && ($Apache::lonhomework::viewgrades eq 'F' )) {
68: return ($ENV{'form.grade_target'});
69: }
70:
1.62 albertel 71: if ( defined($ENV{'form.submitted'}) &&
1.145 albertel 72: ( !defined($ENV{'form.resetdata'})) &&
73: ( !defined($ENV{'form.newrandomization'}))) {
74: return ('grade', 'web');
75: } else {
76: return ('web');
77: }
78: } elsif ($ENV{'request.state'} eq "construct") {
79: if ( defined($ENV{'form.grade_target'}) ) {
80: return ($ENV{'form.grade_target'});
81: }
82: if ( defined($ENV{'form.preview'})) {
83: if ( defined($ENV{'form.submitted'})) {
84: return ('grade', 'web');
85: } else {
86: return ('web');
87: }
88: } else {
1.150 albertel 89: if ( $ENV{'form.problemmode'} eq &mt('View') ||
90: $ENV{'form.problemmode'} eq &mt('Discard Edits and View')) {
1.145 albertel 91: if ( defined($ENV{'form.submitted'}) &&
92: (!defined($ENV{'form.resetdata'})) &&
93: (!defined($ENV{'form.newrandomization'}))) {
94: return ('grade', 'web','answer');
95: } else {
96: return ('web','answer');
97: }
1.150 albertel 98: } elsif ( $ENV{'form.problemmode'} eq &mt('Edit') ) {
1.145 albertel 99: if ( $ENV{'form.submitted'} eq 'edit' ) {
1.150 albertel 100: if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) {
1.145 albertel 101: return ('modified','web','answer');
102: } else {
103: return ('modified','edit');
104: }
105: } else {
106: return ('edit');
107: }
108: } else {
109: return ('web');
110: }
111: }
1.15 albertel 112: }
1.145 albertel 113: return ();
1.5 albertel 114: }
115:
1.3 albertel 116: sub setup_vars {
1.145 albertel 117: my ($target) = @_;
118: return ';'
1.11 albertel 119: # return ';$external::target='.$target.';';
1.2 albertel 120: }
121:
122: sub send_header {
1.145 albertel 123: my ($request)= @_;
124: $request->print(&Apache::lontexconvert::header());
1.16 albertel 125: # $request->print('<form name='.$ENV{'form.request.prefix'}.'lonhomework method="POST" action="'.$request->uri.'">');
1.2 albertel 126: }
127:
1.36 albertel 128: sub createmenu {
1.145 albertel 129: my ($which,$request)=@_;
130: if ($which eq 'grade') {
131: $request->print('<script language="JavaScript">
1.91 albertel 132: hwkmenu=window.open("/res/adm/pages/homeworkmenu.html","homeworkremote",
1.52 albertel 133: "height=350,width=150,menubar=no");
134: </script>');
1.145 albertel 135: }
1.36 albertel 136: }
137:
1.2 albertel 138: sub send_footer {
1.145 albertel 139: my ($request)= @_;
1.16 albertel 140: # $request->print('</form>');
1.145 albertel 141: $request->print(&Apache::lontexconvert::footer());
1.2 albertel 142: }
143:
1.52 albertel 144: $Apache::lonxml::browse='';
1.53 www 145:
1.152 albertel 146: sub check_ip_acc {
147: my ($acc)=@_;
1.154 albertel 148: if (!defined($acc) || $acc =~ /^\s*$/) { return 1; }
1.152 albertel 149: my $allowed=0;
150: my $ip=$ENV{'REMOTE_ADDR'};
151: my $name;
152: foreach my $pattern (split(',',$acc)) {
153: if ($pattern =~ /\*$/) {
154: #35.8.*
155: $pattern=~s/\*//;
156: if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
157: } elsif ($pattern =~ /(\d+\.\d+\.\d+)\.\[(\d+)-(\d+)\]$/) {
158: #35.8.3.[34-56]
159: my $low=$2;
160: my $high=$3;
161: $pattern=$1;
162: if ($ip =~ /^\Q$pattern\E/) {
163: my $last=(split(/\./,$ip))[3];
164: if ($last <=$high && $last >=$low) { $allowed=1; }
165: }
166: } elsif ($pattern =~ /^\*/) {
167: #*.msu.edu
168: $pattern=~s/\*//;
169: if (!defined($name)) {
170: use Socket;
171: my $netaddr=inet_aton($ip);
172: ($name)=gethostbyaddr($netaddr,AF_INET);
1.158 albertel 173: }
1.152 albertel 174: if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
175: } elsif ($pattern =~ /\d+\.\d+\.\d+\.\d+/) {
176: #127.0.0.1
177: if ($ip =~ /^\Q$pattern\E/) { $allowed=1; }
178: } else {
179: #some.name.com
180: if (!defined($name)) {
181: use Socket;
182: my $netaddr=inet_aton($ip);
183: ($name)=gethostbyaddr($netaddr,AF_INET);
184: }
185: if ($name =~ /\Q$pattern\E$/i) { $allowed=1; }
186: }
187: if ($allowed) { last; }
188: }
189: return $allowed;
190: }
1.92 bowersj2 191: # JB, 9/24/2002: Any changes in this function may require a change
192: # in lonnavmaps::resource::getDateStatus.
1.53 www 193: sub check_access {
1.145 albertel 194: my ($id) = @_;
195: my $date ='';
196: my $status;
197: my $datemsg = '';
198: my $lastdate = '';
199: my $temp;
200: my $type;
201: my $passed;
202:
203: if ($ENV{'request.state'} eq "construct") {
1.165 ! albertel 204: if (defined($ENV{'form.problemstatus'})) {
! 205: if ($ENV{'form.problemstate'} =~ /^CANNOT_ANSWER/) {
! 206: return ('CANNOT_ANSWER','is in this state by royal decree.');
! 207: } else {
! 208: return ($ENV{'form.problemstate'},
! 209: 'is in this state by royal decree.');
! 210: }
! 211: }
1.145 albertel 212: &Apache::lonxml::debug("in construction ignoring dates");
213: $status='CAN_ANSWER';
1.146 albertel 214: $datemsg=&mt('is in under construction');
1.163 albertel 215: # return ($status,$datemsg);
1.145 albertel 216: }
217:
218: &Apache::lonxml::debug("checking for part :$id:");
219: &Apache::lonxml::debug("time:".time);
1.152 albertel 220:
1.163 albertel 221: if ($ENV{'request.state'} ne "construct") {
222: my $allowed=&check_ip_acc(&Apache::lonnet::EXT("resource.$id.acc"));
223: if (!$allowed && ($Apache::lonhomework::browse ne 'F')) {
224: $status='INVALID_ACCESS';
225: $date=&mt("can not be accessed from your location.");
1.145 albertel 226: return($status,$date);
227: }
1.163 albertel 228:
229: foreach $temp ("opendate","duedate","answerdate") {
230: $lastdate = $date;
231: $date = &Apache::lonnet::EXT("resource.$id.$temp");
232: my $thistype = &Apache::lonnet::EXT("resource.$id.$temp.type");
233: if ($thistype =~ /^(con_lost|no_such_host)/ ||
234: $date =~ /^(con_lost|no_such_host)/) {
235: $status='UNAVAILABLE';
236: $date=&mt("may open later.");
237: return($status,$date);
238: }
239: if ($thistype eq 'date_interval') {
240: if ($temp eq 'opendate') {
241: $date=&Apache::lonnet::EXT("resource.$id.duedate")-$date;
242: }
243: if ($temp eq 'answerdate') {
244: $date=&Apache::lonnet::EXT("resource.$id.duedate")+$date;
245: }
1.145 albertel 246: }
1.163 albertel 247: &Apache::lonxml::debug("found :$date: for :$temp:");
248: if ($date eq '') {
249: $date = &mt("an unknown date"); $passed = 0;
250: } elsif ($date eq 'con_lost') {
251: $date = &mt("an indeterminate date"); $passed = 0;
252: } else {
253: if (time < $date) { $passed = 0; } else { $passed = 1; }
254: $date = localtime $date;
1.145 albertel 255: }
1.163 albertel 256: if (!$passed) { $type=$temp; last; }
1.145 albertel 257: }
1.163 albertel 258: &Apache::lonxml::debug("have :$type:$passed:");
259: if ($passed) {
260: $status='SHOW_ANSWER';
261: $datemsg=$date;
262: } elsif ($type eq 'opendate') {
263: $status='CLOSED';
264: $datemsg = &mt("will open on")." $date";
265: } elsif ($type eq 'duedate') {
266: $status='CAN_ANSWER';
267: $datemsg = &mt("is due at")." $date";
268: } elsif ($type eq 'answerdate') {
269: $status='CLOSED';
270: $datemsg = &mt("was due on")." $lastdate".&mt(", and answers will be available on")." $date";
1.145 albertel 271: }
272: }
273: if ($status eq 'CAN_ANSWER') {
274: #check #tries, and if correct.
275: my $tries = $Apache::lonhomework::history{"resource.$id.tries"};
276: my $maxtries = &Apache::lonnet::EXT("resource.$id.maxtries");
277: if ( $tries eq '' ) { $tries = '0'; }
1.164 albertel 278: if ( $maxtries eq '' &&
279: $ENV{'request.state'} ne 'construct') { $maxtries = '2'; }
280: if ($maxtries && $tries >= $maxtries) { $status = 'CANNOT_ANSWER'; }
1.145 albertel 281: # if (correct and show prob status) or excused then CANNOT_ANSWER
282: if(($Apache::lonhomework::history{"resource.$id.solved"}=~/^correct/
283: &&
284: lc($Apache::lonhomework::problemstatus) ne 'no')
285: ||
286: $Apache::lonhomework::history{"resource.$id.solved"}=~/^excused/) {
287: $status = 'CANNOT_ANSWER';
288: }
1.121 albertel 289: }
1.54 www 290:
1.133 albertel 291: #if (($status ne 'CLOSED') && ($Apache::lonhomework::type eq 'exam') &&
292: # (!$Apache::lonhomework::history{"resource.0.outtoken"})) {
293: # return ('UNCHECKEDOUT','needs to be checked out');
294: #}
1.54 www 295:
296:
1.145 albertel 297: &Apache::lonxml::debug("sending back :$status:$datemsg:");
298: if (($Apache::lonhomework::browse eq 'F') && ($status eq 'CLOSED')) {
299: &Apache::lonxml::debug("should be allowed to browse a resource when closed");
300: $status='CAN_ANSWER';
1.146 albertel 301: $datemsg=&mt('is closed but you are allowed to view it');
1.145 albertel 302: }
1.106 albertel 303:
1.145 albertel 304: return ($status,$datemsg);
1.20 albertel 305: }
306:
1.41 albertel 307: sub showhash {
1.145 albertel 308: my (%hash) = @_;
309: &showhashsubset(\%hash,'.');
310: return '';
1.79 albertel 311: }
312:
1.106 albertel 313: sub showarray {
314: my ($array)=@_;
315: my $string="(";
316: foreach my $elm (@{ $array }) {
317: if (ref($elm)) {
318: if ($elm =~ /ARRAY/ ) {
319: $string.=&showarray($elm);
320: }
321: } else {
322: $string.="$elm,"
323: }
324: }
325: chop($string);
326: $string.=")";
327: return $string;
328: }
329:
1.79 albertel 330: sub showhashsubset {
1.145 albertel 331: my ($hash,$keyre) = @_;
332: my $resultkey;
333: foreach $resultkey (sort keys %$hash) {
334: if ($resultkey =~ /$keyre/) {
335: if (ref($$hash{$resultkey})) {
336: if ($$hash{$resultkey} =~ /ARRAY/ ) {
337: &Apache::lonxml::debug("$resultkey ---- ".
338: &showarray($$hash{$resultkey}));
339: } elsif ($$hash{$resultkey} =~ /HASH/ ) {
340: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
341: &showhashsubset($$hash{$resultkey},'.');
342: } else {
343: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
344: }
345: } else {
346: &Apache::lonxml::debug("$resultkey ---- $$hash{$resultkey}");
347: }
348: }
349: }
350: &Apache::lonxml::debug("\n<br />restored values^</br>\n");
351: return '';
1.41 albertel 352: }
353:
354: sub setuppermissions {
1.145 albertel 355: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
356: my $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
357: if (! $viewgrades &&
358: exists($ENV{'request.course.sec'}) &&
359: $ENV{'request.course.sec'} !~ /^\s*$/) {
360: $viewgrades = &Apache::lonnet::allowed('vgr',$ENV{'request.course.id'}.
1.127 matthew 361: '/'.$ENV{'request.course.sec'});
1.145 albertel 362: }
363: $Apache::lonhomework::viewgrades = $viewgrades;
364: return ''
1.41 albertel 365: }
366:
367: sub setupheader {
1.120 albertel 368: my $request=$_[0];
369: if ($ENV{'browser.mathml'}) {
1.151 www 370: &Apache::loncommon::content_type($request,'text/xml');
1.120 albertel 371: } else {
1.151 www 372: &Apache::loncommon::content_type($request,'text/html');
1.120 albertel 373: }
374: if (!$Apache::lonxml::debug && ($ENV{'REQUEST_METHOD'} eq 'GET')) {
375: &Apache::loncommon::no_cache($request);
376: }
377: $request->send_http_header;
378: return OK if $request->header_only;
379: return ''
1.41 albertel 380: }
1.35 albertel 381:
1.47 albertel 382: sub handle_save_or_undo {
1.145 albertel 383: my ($request,$problem,$result) = @_;
384: my $file = &Apache::lonnet::filelocation("",$request->uri);
385: my $filebak =$file.".bak";
386: my $filetmp =$file.".tmp";
387: my $error=0;
1.156 albertel 388:
389: &Apache::lonnet::correct_line_ends($result);
1.52 albertel 390:
1.150 albertel 391: if ($ENV{'form.Undo'} eq &mt('undo')) {
1.145 albertel 392: my $error=0;
393: if (!copy($file,$filetmp)) { $error=1; }
394: if ((!$error) && (!copy($filebak,$file))) { $error=1; }
395: if ((!$error) && (!move($filetmp,$filebak))) { $error=1; }
396: if (!$error) {
1.146 albertel 397: $request->print("<p><b>".&mt("Undid changes, Switched")." $filebak ".&mt("and")." $file</b></p>");
1.145 albertel 398: } else {
1.146 albertel 399: $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 400: $error=1;
401: }
1.52 albertel 402: } else {
1.145 albertel 403: my $fs=Apache::File->new(">$filebak");
404: if (defined($fs)) {
405: print $fs $$problem;
1.146 albertel 406: $request->print("<b>".&mt("Making Backup to").
407: " $filebak</b><br />");
1.145 albertel 408: } else {
1.146 albertel 409: $request->print("<font color=\"red\" size=\"+1\"><b>".&mt("Unable to make backup")." $filebak</b></font>");
1.145 albertel 410: $error=2;
411: }
412: my $fh=Apache::File->new(">$file");
413: if (defined($fh)) {
414: print $fh $$result;
1.146 albertel 415: $request->print("<b>".&mt("Saving Modifications to").
416: " $file</b><br />");
1.145 albertel 417: } else {
1.146 albertel 418: $request->print("<font color=\"red\" size=\"+1\"><b>".
419: &mt("Unable to write to")." $file</b></font>");
1.145 albertel 420: $error|=4;
421: }
1.52 albertel 422: }
1.145 albertel 423: return $error;
1.64 albertel 424: }
425:
1.101 albertel 426: sub analyze_header {
427: my ($request) = @_;
1.109 albertel 428: my $result.='<html>
1.146 albertel 429: <head><title>'.&mt("Analyzing a problem").'</title></head>
1.109 albertel 430: <body bgcolor="#FFFFFF">
1.101 albertel 431: <form name="lonhomework" method="POST" action="'.
1.145 albertel 432: $ENV{'request.uri'}.'">
1.146 albertel 433: <input type="submit" name="problemmode" value="'.&mt("EditXML").'" />
434: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.101 albertel 435: <hr />
1.146 albertel 436: <input type="submit" name="submit" value="'.&mt("View").'" />
1.101 albertel 437: <hr />
1.146 albertel 438: '.&mt('List of possible answers').':
1.101 albertel 439: </form>';
440: $request->print($result);
441: $request->rflush();
442: }
443:
1.109 albertel 444: sub analyze_footer {
445: my ($request) = @_;
446: my $result='</body></html>';
447: $request->print($result);
448: $request->rflush();
449: }
450:
1.74 albertel 451: sub analyze {
1.101 albertel 452: my ($request,$file) = @_;
453: &Apache::lonxml::debug("Analyze");
454: my $result;
455: my %overall;
456: my %allparts;
457: my $rndseed=$ENV{'form.rndseed'};
458: &analyze_header($request);
1.114 albertel 459: my %prog_state=
1.146 albertel 460: &Apache::lonhtmlcommon::Create_PrgWin($request,&mt('Analyze Progress'),
461: &mt('Getting Problem Variants'),
1.114 albertel 462: $ENV{'form.numtoanalyze'});
1.102 albertel 463: for(my $i=1;$i<$ENV{'form.numtoanalyze'}+1;$i++) {
1.114 albertel 464: &Apache::lonhtmlcommon::Increment_PrgWin($request,\%prog_state,
1.146 albertel 465: &mt('last problem'));
1.101 albertel 466: my $subresult=&Apache::lonnet::ssi($request->uri,
467: ('grade_target' => 'analyze'),
1.130 albertel 468: ('rndseed' => $i+$rndseed));
1.101 albertel 469: (my $garbage,$subresult)=split(/_HASH_REF__/,$subresult,2);
470: my %analyze=&Apache::lonnet::str2hash($subresult);
1.114 albertel 471: my @parts;
472: if (defined(@{ $analyze{'parts'} })) {
473: @parts=@{ $analyze{'parts'} };
474: }
1.101 albertel 475: foreach my $part (@parts) {
476: if (!exists($allparts{$part})) {$allparts{$part}=1;};
1.109 albertel 477: if ($analyze{$part.'.type'} eq 'numericalresponse' ||
478: $analyze{$part.'.type'} eq 'stringresponse' ||
479: $analyze{$part.'.type'} eq 'formularesponse' ) {
1.101 albertel 480: push( @{ $overall{$part.'.answer'} },
481: [@{ $analyze{$part.'.answer'} }]);
482: }
483: }
484: }
1.114 albertel 485: &Apache::lonhtmlcommon::Update_PrgWin($request,\%prog_state,
1.146 albertel 486: &mt('Analyzing Results'));
1.134 albertel 487: foreach my $part (sort(keys(%allparts))) {
1.109 albertel 488: if (defined(@{ $overall{$part.'.answer'} })) {
1.132 albertel 489: my $num_cols=scalar(@{ $overall{$part.'.answer'}->[0] });
1.146 albertel 490: $request->print('<table><tr><td colspan="'.($num_cols+1).'">'.&mt('Part').' '.$part.'</td></tr>');
1.130 albertel 491: my %frequency;
1.109 albertel 492: foreach my $answer (sort {$a->[0] <=> $b->[0]} (@{ $overall{$part.'.answer'} })) {
1.132 albertel 493: $frequency{join("\0",@{ $answer })}++;
1.130 albertel 494: }
1.146 albertel 495: $request->print('<tr><td colspan="'.($num_cols).'">'.&mt('Answer').'</td><td>'.&mt('Frequency').'</td></tr>');
1.132 albertel 496: foreach my $answer (sort {(split("\0",$a))[0] <=> (split("\0",$b))[0]} (keys(%frequency))) {
497: $request->print('<tr><td align="right">'.
498: join('</td><td align="right">',split("\0",$answer)).
1.130 albertel 499: '</td><td>('.$frequency{$answer}.
500: ')</td></tr>');
1.109 albertel 501: }
502: $request->print('</table>');
503: } else {
1.162 albertel 504: $request->print('<p>'.&mt('Response').' '.$part.' '.
1.146 albertel 505: &mt('is not analyzable at this time').'</p>');
1.101 albertel 506: }
507: }
1.130 albertel 508: if (scalar(keys(%allparts)) == 0 ) {
1.162 albertel 509: $request->print('<p>'.&mt('Found no analyzable respones in this problem, currently only Numerical, Formula and String response styles are supported.').'</p>');
1.130 albertel 510: }
1.114 albertel 511: &Apache::lonhtmlcommon::Close_PrgWin($request,\%prog_state);
1.109 albertel 512: &analyze_footer($request);
1.101 albertel 513: &Apache::lonhomework::showhash(%overall);
514: return $result;
1.74 albertel 515: }
516:
1.64 albertel 517: sub editxmlmode {
1.145 albertel 518: my ($request,$file) = @_;
519: my $result;
520: my $problem=&Apache::lonnet::getfile($file);
521: if ($problem eq -1) {
1.146 albertel 522: &Apache::lonxml::error("<b> ".&mt('Unable to find').
523: " <i>$file</i></b>");
1.145 albertel 524: $problem='';
525: }
526: if (defined($ENV{'form.editxmltext'}) || defined($ENV{'form.Undo'})) {
527: my $error=&handle_save_or_undo($request,\$problem,
528: \$ENV{'form.editxmltext'});
529: if (!$error) { $problem=&Apache::lonnet::getfile($file); }
530: }
1.80 albertel 531: &Apache::lonhomework::showhashsubset(\%ENV,'^form');
1.150 albertel 532: if ( $ENV{'form.submit'} eq &mt('Submit Changes and View') ) {
1.145 albertel 533: &Apache::lonhomework::showhashsubset(\%ENV,'^form');
534: $ENV{'form.problemmode'}='View';
535: &renderpage($request,$file);
536: } else {
537: my ($rows,$cols) = &Apache::edit::textarea_sizes(\$problem);
1.160 www 538: my $xml_help = '<table><tr><td>'.
539: &Apache::loncommon::helpLatexCheatsheet("Problem_Editor_XML_Index",
540: "Problem Editing Help").
541: '</td><td>'.
542: &Apache::loncommon::help_open_faq(5).
543: &Apache::loncommon::help_open_bug('Authoring').'</td></tr></table>';
1.145 albertel 544: if ($cols > 80) { $cols = 80; }
545: if ($cols < 70) { $cols = 70; }
546: if ($rows < 20) { $rows = 20; }
547: $result.='<html><body bgcolor="#FFFFFF">
1.64 albertel 548: <form name="lonhomework" method="POST" action="'.
1.145 albertel 549: $ENV{'request.uri'}.'">
1.146 albertel 550: <input type="hidden" name="problemmode" value="'.&mt('EditXML').'" />
551: <input type="submit" name="problemmode" value="'.&mt('Discard Edits and View').'" />
552: <input type="submit" name="problemmode" value="'.&mt('Edit').'" />
1.64 albertel 553: <hr />
1.146 albertel 554: <input type="submit" name="submit" value="'.&mt('Submit Changes').'" />
555: <input type="submit" name="submit" value="'.&mt('Submit Changes and View').'" />
556: <input type="submit" name="Undo" value="'.&mt('undo').'" />
1.64 albertel 557: <hr />
1.110 albertel 558: ' . $xml_help . '
1.64 albertel 559: <textarea rows="'.$rows.'" cols="'.$cols.'" name="editxmltext">'.
1.145 albertel 560: &HTML::Entities::encode($problem).'</textarea>
1.64 albertel 561: </form></body></html>';
1.145 albertel 562: $request->print($result);
563: }
564: return '';
1.47 albertel 565: }
566:
1.41 albertel 567: sub renderpage {
1.145 albertel 568: my ($request,$file) = @_;
1.52 albertel 569:
1.145 albertel 570: my (@targets) = &get_target();
1.161 albertel 571: &Apache::lonhomework::showhashsubset(\%ENV,'form.');
1.145 albertel 572: &Apache::lonxml::debug("Running targets ".join(':',@targets));
573: foreach my $target (@targets) {
574: #my $t0 = [&gettimeofday()];
575: my $problem=&Apache::lonnet::getfile($file);
576: if ($problem eq -1) {
1.146 albertel 577: &Apache::lonxml::error("<b> ".&mt('Unable to find')." <i>$file</i></b>");
1.145 albertel 578: $problem='';
579: }
1.52 albertel 580:
1.145 albertel 581: my %mystyle;
582: my $result = '';
583: if ($target eq 'analyze') { %Apache::lonhomework::analyze=(); }
584: if ($target eq 'answer') { &showhash(%Apache::lonhomework::history); }
585: if ($target eq 'web') {&Apache::lonhomework::showhashsubset(\%ENV,'^form');}
586:
587: &Apache::lonxml::debug("Should be parsing now");
588: $result = &Apache::lonxml::xmlparse($request, $target, $problem,
589: &setup_vars($target),%mystyle);
590: undef($Apache::lonhomework::parsing_a_problem);
591: #$request->print("Result follows:");
592: if ($target eq 'modified') {
593: &handle_save_or_undo($request,\$problem,\$result);
594: } else {
595: if ($target eq 'analyze') {
596: $result=&Apache::lonnet::hashref2str(\%Apache::lonhomework::analyze);
597: undef(%Apache::lonhomework::analyze);
598: }
599: #my $td=&tv_interval($t0);
600: #if ( $Apache::lonxml::debug) {
601: #$result =~ s:</body>::;
602: #$result.="<br />Spent $td seconds processing target $target\n</body>";
603: #}
604: $request->print($result);
605: $request->rflush();
606: }
607: #$request->print(":Result ends");
608: #my $td=&tv_interval($t0);
1.52 albertel 609: }
1.41 albertel 610: }
611:
1.42 albertel 612: # with no arg it returns a HTML <option> list of the template titles
613: # with one arg it returns the filename associated with the arg passed
614: sub get_template_list {
1.145 albertel 615: my ($namewanted,$extension) = @_;
616: my $result;
617: my @allnames;
618: &Apache::lonxml::debug("Looking for :$extension:");
619: foreach my $file (</home/httpd/html/res/adm/includes/templates/*.$extension>) {
620: my $name=&Apache::lonnet::metadata($file,'title');
621: if ($namewanted && ($name eq $namewanted)) {
622: $result=$file;
623: last;
624: } else {
625: if ($name) { push (@allnames, $name); }
626: }
627: }
628: if (@allnames && !$result) {
1.146 albertel 629: $result="<option>".&mt("Select a")." $extension ".&mt('template')."</option>\n<option>".
1.145 albertel 630: join('</option><option>',sort(@allnames)).'</option>';
1.42 albertel 631: }
1.145 albertel 632: return $result;
1.42 albertel 633: }
634:
635: sub newproblem {
1.65 matthew 636: my ($request) = @_;
637: my $extension=$request->uri;
638: $extension=~s:^.*\.([\w]+)$:$1:;
639: &Apache::lonxml::debug("Looking for :$extension:");
1.131 albertel 640: my $templatelist=&get_template_list('',$extension);
1.85 albertel 641: if ($ENV{'form.template'} &&
1.128 albertel 642: $ENV{'form.template'} ne "Select a $extension template") {
1.65 matthew 643: use File::Copy;
644: my $file = &get_template_list($ENV{'form.template'},$extension);
645: my $dest = &Apache::lonnet::filelocation("",$request->uri);
646: copy($file,$dest);
647: &renderpage($request,$dest);
1.131 albertel 648: } elsif($ENV{'form.newfile'} && !$templatelist) {
649: # I don't like hard-coded filenames but for now, this will work.
650: use File::Copy;
651: my $templatefilename =
652: $request->dir_config('lonIncludes').'/templates/blank.problem';
653: &Apache::lonxml::debug("$templatefilename");
654: my $dest = &Apache::lonnet::filelocation("",$request->uri);
655: copy($templatefilename,$dest);
656: &renderpage($request,$dest);
1.85 albertel 657: } else {
1.65 matthew 658: my $url=$request->uri;
1.157 albertel 659: my $shownurl=$url;
660: $shownurl=~s-^/~-/priv/-;
1.65 matthew 661: my $dest = &Apache::lonnet::filelocation("",$request->uri);
1.128 albertel 662: my $errormsg;
663: if ($ENV{'form.newfile'}) {
1.146 albertel 664: $errormsg='<p><font color="red">'.&mt('You did not select a template.').'</font></p>'."\n";
1.128 albertel 665: }
1.85 albertel 666: my $instructions;
1.159 www 667: my $bodytag=&Apache::loncommon::bodytag(undef,undef,undef,1);
1.146 albertel 668: if ($templatelist) { $instructions=&mt(", select a template from the pull-down menu below.").'<br />'.&mt("Then");}
1.147 albertel 669: my %lt=&Apache::lonlocal::texthash( 'create' => 'Creating a new',
1.146 albertel 670: 'resource' => 'resource',
671: 'requested' => 'The requested file',
672: 'not exist' => 'currently does not exist',
673: 'createnew' => 'To create a new',
674: 'click' => 'click on the',
675: 'Create' => 'Create',
676: 'button' => 'button');
1.65 matthew 677: $request->print(<<ENDNEWPROBLEM);
1.159 www 678: $bodytag
1.148 albertel 679: <h1>$lt{'create'} $extension $lt{'resource'}</h1>
1.128 albertel 680: $errormsg
1.157 albertel 681: $lt{'requested'} <tt>$shownurl</tt> $lt{'not exist'}.
1.105 www 682: <p>
1.146 albertel 683: <b>$lt{'createnew'} $extension$instructions $lt{'click'} "$lt{'Create'} $extension" $lt{'button'}.</b>
1.105 www 684: </p>
685: <p><form action="$url" method="POST">
1.42 albertel 686: ENDNEWPROBLEM
1.85 albertel 687: if (defined($templatelist)) {
688: $request->print("<select name=\"template\">$templatelist</select>");
689: }
1.146 albertel 690: $request->print("<br /><input type=\"submit\" name=\"newfile\" value=\"".&mt('Create')." $extension\" />");
1.105 www 691: $request->print("</form></p></body>");
1.65 matthew 692: }
693: return '';
1.42 albertel 694: }
695:
696: sub view_or_edit_menu {
1.145 albertel 697: my ($request) = @_;
698: my $url=$request->uri;
1.147 albertel 699: my %lt=&Apache::lonlocal::texthash( 'would' => 'Would you like to',
1.146 albertel 700: 'view' => 'View',
701: 'Edit' => 'edit',
702: 'or' => 'or',
703: 'the problem' => 'the problem');
1.145 albertel 704: $request->print(<<EDITMENU);
1.42 albertel 705: <body bgcolor="#FFFFFF">
706: <form action="$url" method="POST">
1.146 albertel 707: $lt{'would'} <input type="submit" name="problemmode" value="<{'view'}">
708: <{'or'} <input type="submit" name="problemmode" value="<{'Edit'}">
709: <{'the problem'}.
1.42 albertel 710: </form>
711: </body>
712: EDITMENU
713: }
714:
1.41 albertel 715: sub handler {
1.145 albertel 716: #my $t0 = [&gettimeofday()];
717: my $request=$_[0];
718:
719: $Apache::lonxml::debug=$ENV{'user.debug'};
720: if (&setupheader($request)) { return OK; }
721: $ENV{'request.uri'}=$request->uri;
1.41 albertel 722:
1.145 albertel 723: #setup permissions
724: $Apache::lonhomework::browse= &Apache::lonnet::allowed('bre',$ENV{'request.filename'});
725: $Apache::lonhomework::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
726: &Apache::lonxml::debug("Permissions:$Apache::lonhomework::browse:$Apache::lonhomework::viewgrades:");
727: # some times multiple problemmodes are submitted, need to select
728: # the last one
729: &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
730: if ( defined($ENV{'form.problemmode'}) &&
731: ref($ENV{'form.problemmode'}) ) {
732: &Apache::lonxml::debug("Problem Mode ".join(",",@$ENV{'form.problemmode'}));
733: my $mode=$ENV{'form.problemmode'}->[-1];
734: undef $ENV{'form.problemmode'};
735: $ENV{'form.problemmode'}=$mode;
736: }
737: &Apache::lonxml::debug("Problem Mode ".$ENV{'form.problemmode'});
738: my $file=&Apache::lonnet::filelocation("",$request->uri);
739:
740: #check if we know where we are
741: if ($ENV{'request.course.fn'} && !&Apache::lonnet::symbread()) {
742: # if we are browsing we might not be able to know where we are
743: if ($Apache::lonhomework::browse ne 'F') {
744: #should know where we are, so ask
745: if ( &Apache::lonnet::mod_perl_version() == 2 ) {
746: &Apache::lonnet::cleanenv();
747: }
748: $request->internal_redirect('/adm/ambiguous'); return;
749: }
750: }
1.41 albertel 751:
1.145 albertel 752: my ($symb) = &Apache::lonxml::whichuser();
753: &Apache::lonxml::debug('symb is '.$symb);
754: if ($ENV{'request.state'} eq "construct" || $symb eq '') {
1.150 albertel 755: if ($ENV{'form.resetdata'} eq &mt('Reset Submissions') ||
756: $ENV{'form.resetdata'} eq &mt('New Problem Variation') ||
757: $ENV{'form.newrandomization'} eq &mt('New Randomization')) {
1.145 albertel 758: my ($symb,$courseid,$domain,$name) = &Apache::lonxml::whichuser();
759: &Apache::lonnet::tmpreset($symb,'',$domain,$name);
760: &Apache::lonxml::debug("Attempt reset");
761: }
762: }
763: if ($ENV{'request.state'} eq "construct") {
764: if ( -e $file ) {
765: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
766: ['problemmode']);
767: if (!(defined $ENV{'form.problemmode'})) {
768: #first visit to problem in construction space
769: #&view_or_edit_menu($request);
770: $ENV{'form.problemmode'}='View';
771: &renderpage($request,$file);
1.150 albertel 772: } elsif ($ENV{'form.problemmode'} eq &mt('EditXML')) {
1.145 albertel 773: &editxmlmode($request,$file);
1.150 albertel 774: } elsif ($ENV{'form.problemmode'} eq &mt('Calculate answers')) {
1.145 albertel 775: &analyze($request,$file);
776: } else {
777: &renderpage($request,$file);
778: }
779: } else {
780: # requested file doesn't exist in contruction space
781: &newproblem($request);
782: }
783: } else {
784: # just render the page normally outside of construction space
785: &Apache::lonxml::debug("not construct");
1.52 albertel 786: &renderpage($request,$file);
1.41 albertel 787: }
1.145 albertel 788: #my $td=&tv_interval($t0);
789: #&Apache::lonxml::debug("Spent $td seconds processing");
790: # &Apache::lonhomework::send_footer($request);
791: # always turn off debug messages
792: $Apache::lonxml::debug=0;
793: return OK;
1.52 albertel 794:
1.1 albertel 795: }
796:
797: 1;
798: __END__
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