File:
[LON-CAPA] /
rat /
lonpage.pm
Revision
1.101:
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select for diffs
Sun Jun 9 02:59:25 2013 UTC (10 years, 10 months ago) by
raeburn
Branches:
MAIN
CVS tags:
HEAD
- Support toggle between Rich Text/Plain Text for multiple textareas in
a composite page.
- Add prefix to id in textarea tag with a .page to ensure uniqueness
- Javascript functions: containsBlockHtml(), startRichEditor(),
$(document).ready(function() etc only included once.
1: # The LearningOnline Network with CAPA
2: # Page Handler
3: #
4: # $Id: lonpage.pm,v 1.101 2013/06/09 02:59:25 raeburn Exp $
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: #
28: ###
29:
30:
31:
32:
33: package Apache::lonpage;
34:
35: use strict;
36: use Apache::Constants qw(:common :http);
37: use Apache::lonnet;
38: use Apache::loncommon();
39: use Apache::lonxml();
40: use Apache::lonlocal;
41: use Apache::lonmenu;
42: use HTML::TokeParser;
43: use GDBM_File;
44: use Apache::lonsequence;
45: use lib '/home/httpd/lib/perl/';
46: use LONCAPA;
47:
48:
49: # -------------------------------------------------------------- Module Globals
50: my %hash;
51: my @rows;
52:
53: # ------------------------------------------------------------------ Euclid gcd
54:
55: sub euclid {
56: my ($e,$f)=@_;
57: my $a; my $b; my $r;
58: if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; }
59: while ($r!=0) {
60: $a=$b; $b=$r;
61: $r=$a%$b;
62: }
63: return $b;
64: }
65:
66: # ------------------------------------------------------------ Build page table
67:
68: sub tracetable {
69: my ($sofar,$rid,$beenhere)=@_;
70: my $further=$sofar;
71: my $randomout=0;
72: unless ($env{'request.role.adv'}) {
73: $randomout = $hash{'randomout_'.$rid};
74: }
75: unless ($beenhere=~/\&$rid\&/) {
76: $beenhere.=$rid.'&';
77: unless ($randomout) {
78: if (defined($hash{'is_map_'.$rid})) {
79: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
80: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
81: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
82: $sofar=
83: &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},
84: '&'.$frid.$beenhere);
85: $sofar++;
86: if ($hash{'src_'.$frid}) {
87: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid});
88: if (($brepriv eq '2') || ($brepriv eq 'F')) {
89: if (defined($rows[$sofar])) {
90: $rows[$sofar].='&'.$frid;
91: } else {
92: $rows[$sofar]=$frid;
93: }
94: }
95: }
96: }
97: } else {
98: $sofar++;
99: if ($hash{'src_'.$rid}) {
100: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid});
101: if (($brepriv eq '2') || ($brepriv eq 'F')) {
102: if (defined($rows[$sofar])) {
103: $rows[$sofar].='&'.$rid;
104: } else {
105: $rows[$sofar]=$rid;
106: }
107: }
108: }
109: }
110: }
111:
112: if (defined($hash{'to_'.$rid})) {
113: my $mincond=1;
114: my $next='';
115: foreach (split(/\,/,$hash{'to_'.$rid})) {
116: my $thiscond=
117: &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}});
118: if ($thiscond>=$mincond) {
119: if ($next) {
120: $next.=','.$_.':'.$thiscond;
121: } else {
122: $next=$_.':'.$thiscond;
123: }
124: if ($thiscond>$mincond) { $mincond=$thiscond; }
125: }
126: }
127: foreach (split(/\,/,$next)) {
128: my ($linkid,$condval)=split(/\:/,$_);
129: if ($condval>=$mincond) {
130: my $now=&tracetable($sofar,$hash{'goesto_'.$linkid},$beenhere);
131: if ($now>$further) { $further=$now; }
132: }
133: }
134: }
135: }
136: return $further;
137: }
138:
139: # ================================================================ Main Handler
140:
141: sub handler {
142: my $r=shift;
143:
144: # ------------------------------------------- Set document type for header only
145:
146: if ($r->header_only) {
147: if ($env{'browser.mathml'}) {
148: &Apache::loncommon::content_type($r,'text/xml');
149: } else {
150: &Apache::loncommon::content_type($r,'text/html');
151: }
152: $r->send_http_header;
153: return OK;
154: }
155:
156: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
157: ['forceselect','launch']);
158: my $number_of_columns = 1;
159: my $requrl=$r->uri;
160: my $target = $env{'form.grade_target'};
161:
162: # Short term solution: define target as 'tex_answer' when retrieving answers
163: # for resources in a .page when generating printouts.
164: # A better long-term fix would be to modify the way problem rendering, and
165: # answer rendering are retrieved for individual resources when printing a .page,
166: # so rendered problem and answer are sequential for individual resources in
167: # the .page
168: #
169: if ($target eq 'answer') {
170: if ($env{'form.answer_output_mode'} eq 'tex') {
171: $target = 'tex_answer';
172: }
173: }
174: # &Apache::lonnet::logthis("Got a target of $target");
175: if ($target eq 'meta') {
176: &Apache::loncommon::content_type($r,'text/html');
177: $r->send_http_header;
178: return OK;
179: }
180: # ----------------------------------------------------------------- Tie db file
181: if (($env{'request.course.fn'}) && (!$env{'form.forceselect'})) {
182: my $fn=$env{'request.course.fn'};
183: if (-e "$fn.db") {
184: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) {
185: # ------------------------------------------------------------------- Hash tied
186: my $firstres=$hash{'map_start_'.$requrl};
187: my $lastres=$hash{'map_finish_'.$requrl};
188: if (($firstres) && ($lastres)) {
189: # ----------------------------------------------------------------- Render page
190:
191: @rows=();
192:
193: &tracetable(0,$firstres,'&');
194:
195: # ------------------------------------------------------------ Add to symb list
196:
197: my $i;
198: my %symbhash=();
199: for ($i=0;$i<=$#rows;$i++) {
200: if ($rows[$i]) {
201: my @colcont=split(/\&/,$rows[$i]);
202: foreach my $rid (@colcont) {
203: my ($mapid,$resid)=split(/\./,$rid);
204: $symbhash{$hash{'src_'.$rid}}=
205: [$hash{'src_'.$rid},$resid];
206: }
207: }
208: }
209: &Apache::lonnet::symblist($requrl,%symbhash);
210:
211: # ------------------------------------------------------------------ Page parms
212:
213: my $j;
214: my $lcm=1;
215: my $contents=0;
216: my $nforms=0;
217: my $nuploads=0;
218: my %turninpaths;
219: my %multiresps;
220: my $turninparent;
221:
222: my %ssibody=();
223: my %ssibgcolor=();
224: my %ssitext=();
225: my %ssilink=();
226: my %ssivlink=();
227: my %ssialink=();
228:
229: my %cellemb=();
230: my %cellexternal=();
231:
232: my $allscript='';
233: my $allmeta='';
234:
235: my $isxml=0;
236: my $xmlheader='';
237: my $xmlbody='';
238:
239: # --------------------------------------------- Get SSI output, post parameters
240:
241: for ($i=0;$i<=$#rows;$i++) {
242: if ($rows[$i]) {
243: $contents++;
244: my @colcont=split(/\&/,$rows[$i]);
245: $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1));
246: foreach (@colcont) {
247: my $src=$hash{'src_'.$_};
248: my ($extension)=($src=~/\.(\w+)$/);
249: $cellexternal{$_}=($hash{'ext_'.$_} eq 'true:');
250: if ($hash{'encrypted_'.$_}) {
251: $src=&Apache::lonenc::encrypted($src);
252: }
253: $cellemb{$_}=
254: &Apache::loncommon::fileembstyle($extension);
255: if ($cellexternal{$_}) {
256: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
257: $ssibody{$_} = <<ENDEXT;
258: <iframe src="$src" width="100%">No iframe support!</iframe>
259: ENDEXT
260: }
261: } elsif ($cellemb{$_} eq 'ssi') {
262: # --------------------------------------------------------- This is an SSI cell
263: my ($mapid,$resid)=split(/\./,$_);
264: my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$src);
265:
266: my $prefix=$_.'_';
267: my $idprefix= join('_',($mapid,$resid,''));
268: my %posthash=('request.prefix' => $prefix,
269: 'LONCAPA_INTERNAL_no_discussion' => 'true',
270: 'symb' => $symb);
271: if (($env{'form.grade_target'} eq 'tex') ||
272: ($env{'form.answer_output_mode'} eq 'tex')) {
273: $posthash{'grade_target'}=$env{'form.grade_target'};
274: $posthash{'textwidth'}=$env{'form.textwidth'};
275: $posthash{'problem_split'}=$env{'form.problem_split'};
276: $posthash{'latex_type'}=$env{'form.latex_type'};
277: $posthash{'rndseed'}=$env{'form.rndseed'};
278: $posthash{'answer_output_mode'} = $env{'form.answer_output_mode'};
279: }
280: my $submitted=exists($env{'form.all_submit'});
281: if (!$submitted) {
282: foreach my $key (keys(%env)) {
283: if ($key=~/^form.\Q$prefix\Esubmit_/) {
284: $submitted=1;last;
285: }
286: }
287: }
288: if ($submitted) {
289: foreach my $key (keys(%env)) {
290: if ($key=~/^form.\Q$prefix\E/) {
291: my $name=$key;
292: $name=~s/^form.\Q$prefix\E//;
293: $posthash{$name}=$env{$key};
294: }
295: }
296: if (exists($env{'form.all_submit'})) {
297: $posthash{'all_submit'}='yes';
298: }
299: }
300: my $output=Apache::lonnet::ssi($src,%posthash);
301: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
302: if (($target eq 'tex') || ($target eq 'tex_answer')) {
303: $output =~ s/^([^&]+)\\begin{document}//;
304: $output =~ s/\\end{document}//;
305: # $output = '\parbox{\minipagewidth}{ '.$output.' }';
306: #some additional cleanup necessary for LateX (due to limitations of table environment
307: $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g;
308: }
309: my $parser=HTML::TokeParser->new(\$output);
310: my $token;
311: my $thisdir=$src;
312: my $bodydef=0;
313: my $thisxml=0;
314: my @rlinks=();
315: if ($output=~/\?xml/) {
316: $isxml=1;
317: $thisxml=1;
318: $output=~
319: /((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si;
320: $xmlheader=$1;
321: }
322: while ($token=$parser->get_token) {
323: if ($token->[0] eq 'S') {
324: if ($token->[1] eq 'a') {
325: if ($token->[2]->{'href'}) {
326: $rlinks[$#rlinks+1]=
327: $token->[2]->{'href'};
328: }
329: } elsif ($token->[1] eq 'img') {
330: $rlinks[$#rlinks+1]=
331: $token->[2]->{'src'};
332: } elsif ($token->[1] eq 'embed') {
333: $rlinks[$#rlinks+1]=
334: $token->[2]->{'src'};
335: } elsif ($token->[1] eq 'base') {
336: $thisdir=$token->[2]->{'href'};
337: } elsif ($token->[1] eq 'body') {
338: $bodydef=1;
339: $ssibgcolor{$_}=$token->[2]->{'bgcolor'};
340: $ssitext{$_}=$token->[2]->{'text'};
341: $ssilink{$_}=$token->[2]->{'link'};
342: $ssivlink{$_}=$token->[2]->{'vlink'};
343: $ssialink{$_}=$token->[2]->{'alink'};
344: if ($thisxml) {
345: $xmlbody=$token->[4];
346: }
347: } elsif ($token->[1] eq 'meta') {
348: if ($token->[4] !~ m:/>$:) {
349: $allmeta.="\n".$token->[4].'</meta>';
350: } else {
351: $allmeta.="\n".$token->[4];
352: }
353: } elsif (($token->[1] eq 'script') &&
354: ($bodydef==0)) {
355: $allscript.="\n\n"
356: .$parser->get_text('/script');
357: }
358: }
359: }
360: if ($output=~/\<body[^\>]*\>(.*)/si) {
361: $output=$1;
362: }
363: $output=~s/\<\/body\>.*//si;
364: if ($output=~/\<form/si) {
365: $nforms++;
366: $output=~s/\<form[^\>]*\>//gsi;
367: $output=~s/\<\/form[^\>]*\>//gsi;
368: if ($output=~/\<input[^\>]+name\s*=\s*[\'\"]*HWFILE/) {
369: $nuploads++;
370: }
371: $output=~
372: s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi;
373: $output=~
374: s/\<((?:input|select|button|textarea)[^\>]+)id\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 id="$idprefix$2" $3\>/gsi;
375: if ($nuploads) {
376: $output=~
377: s/\<(input[^\>]+name=\"\Q$prefix\EHWFILE[^\>]+)\s*id\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\)]*)\>/\<$1 id="$prefix$2" $3\>/gsi;
378: ($turninpaths{$prefix},$multiresps{$prefix}) =
379: &Apache::loncommon::get_turnedin_filepath($symb,$env{'user.name'},$env{'user.domain'});
380: if ($turninparent eq '') {
381: $turninparent = $turninpaths{$prefix};
382: $turninparent =~ s{(/[^/]+)$}{};
383: }
384: }
385: $output=~
386: s/\<((?:input|select)[^\>]+\Qjavascript:setSubmittedPart\E)\(\s*[\'\"]([^\'\"]+)[\'\"]*\s*\)/\<$1('$2','$prefix')/gsi;
387: }
388: $thisdir=~s/\/[^\/]*$//;
389: foreach (@rlinks) {
390: unless (($_=~/^https?\:\/\//i) ||
391: ($_=~/^\//) ||
392: ($_=~/^javascript:/i) ||
393: ($_=~/^mailto:/i) ||
394: ($_=~/^\#/)) {
395: my $newlocation=
396: &Apache::lonnet::hreflocation($thisdir,$_);
397: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
398: }
399: }
400: # -------------------------------------------------- Deal with Applet codebases
401: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
402: $ssibody{$_}=$output;
403: # ---------------------------------------------------------------- End SSI cell
404: }
405: }
406: }
407: }
408: unless ($contents) {
409: &Apache::loncommon::content_type($r,'text/html');
410: $r->send_http_header;
411: $r->print(&Apache::loncommon::start_page(undef,undef,
412: {'force_register' => 1,}));
413: $r->print(&mt('This page is either empty or it only contains resources that are currently hidden').'. ');
414: $r->print('<br /><br />'.&mt('Please use the LON-CAPA navigation arrows to move to another item in the course').
415: &Apache::loncommon::end_page());
416: } else {
417: # ------------------------------------------------------------------ Build page
418:
419: # ---------------------------------------------------------------- Send headers
420: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
421: if ($isxml) {
422: &Apache::loncommon::content_type($r,'text/xml');
423: } else {
424: &Apache::loncommon::content_type($r,'text/html');
425: }
426: $r->send_http_header;
427: # ------------------------------------------------------------------------ Head
428: if ($allscript) {
429: $allscript =
430: "\n".'<script type="text/javascript">'."\n".
431: $allscript.
432: "\n</script>\n";
433: }
434: if (($nforms) && ($nuploads)) {
435: $allscript .= &Apache::lonhtmlcommon::file_submissionchk_js(\%turninpaths,\%multiresps);
436: }
437: if (($nforms) && (&Apache::lonhtmlcommon::htmlareabrowser())) {
438: my %textarea_args = (
439: dragmath => 'math',
440: );
441: $allscript .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
442: }
443: # ------------------------------------------------------------------ Start body
444: $r->print(&Apache::loncommon::start_page(undef,$allscript,
445: {'force_register' => 1,
446: 'bgcolor' => '#ffffff',}));
447: # ------------------------------------------------------------------ Start form
448: if ($nforms) {
449: my $fmtag = '<form name="lonhomework" method="post" enctype="multipart/form-data"';
450: if ($nuploads) {
451: my $multi;
452: if ($nuploads > 1) {
453: $multi = 1;
454: }
455: $fmtag .= 'onsubmit="return file_submission_check(this,'."'$turninparent','$multi'".');"';
456: }
457: $fmtag .= ' action="'.
458: &Apache::lonenc::check_encrypt($requrl)
459: .'">';
460: $r->print($fmtag);
461: }
462: } elsif (($target eq 'tex') || ($target eq 'tex_answer')) {
463: # I think this is not needed as the header
464: # will be put in for each of the page parts
465: # by the londefdef.pm now that we are opening up
466: # the parts of a page.
467: #$r->print('\documentclass{article}
468: # \newcommand{\keephidden}[1]{}
469: # \usepackage[dvips]{graphicx}
470: # \usepackage{epsfig}
471: # \usepackage{calc}
472: # \usepackage{longtable}
473: # \begin{document}');
474: }
475: # ----------------------------------------------------------------- Start table
476: if (($target eq 'tex') || ($target eq 'tex_answer')) {
477: # # $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead ');
478: if ($number_of_columns le $lcm) {$number_of_columns=$lcm;};
479: } else {
480: $r->print('<table width="100%" cols="'.$lcm.'" border="0">');
481: }
482: # generate rows
483: for ($i=0;$i<=$#rows;$i++) {
484: if ($rows[$i]) {
485: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
486: $r->print("\n<tr>");
487: }
488: my @colcont=split(/\&/,$rows[$i]);
489: my $avespan=$lcm/($#colcont+1);
490: for ($j=0;$j<=$#colcont;$j++) {
491: my $rid=$colcont[$j];
492:
493: my $metainfo =&get_buttons(\%hash,$rid).'<br />';
494: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
495: $r->print('<td colspan="'.$avespan.'"');
496: }
497: if (($cellemb{$rid} eq 'ssi') || ($cellexternal{$rid})) {
498: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
499: if ($ssibgcolor{$rid}) {
500: $r->print(' bgcolor="'.
501: $ssibgcolor{$rid}.'"');
502: }
503: $r->print('>'.$metainfo.'<font');
504:
505: if ($ssitext{$rid}) {
506: $r->print(' text="'.$ssitext{$rid}.'"');
507: }
508: if ($ssilink{$rid}) {
509: $r->print(' link="'.$ssilink{$rid}.'"');
510: }
511: if ($ssitext{$rid}) {
512: $r->print(' vlink="'.$ssivlink{$rid}.'"');
513: }
514: if ($ssialink{$rid}) {
515: $r->print(' alink="'.$ssialink{$rid}.'"');
516: }
517: $r->print('>');
518: }
519: unless (($cellexternal{$rid}) &&
520: ($target eq 'tex') && ($target eq 'tex_answer')) {
521: $r->print($ssibody{$rid});
522: }
523: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
524: $r->print('</font>');
525: }
526: if ($env{'course.'.
527: $env{'request.course.id'}.
528: '.pageseparators'} eq 'yes') {
529: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
530: $r->print('<hr />');
531: }
532: }
533: } elsif ($cellemb{$rid} eq 'img') {
534: $r->print('>'.$metainfo.'<img src="'.
535: $hash{'src_'.$rid}.'" />');
536: } elsif ($cellemb{$rid} eq 'emb') {
537: $r->print('>'.$metainfo.'<embed src="'.
538: $hash{'src_'.$rid}.'"></embed>');
539: } elsif (&Apache::lonnet::declutter($hash{'src_'.$rid}) !~/\.(sequence|page)$/) {
540: $r->print($metainfo.'<b>'.$hash{'title_'.$rid}.'</b><br />'.
541: &mt('It is recommended that you use an up-to-date virus scanner before handling this file.').'</p><p><table>'.
542: &Apache::londocs::entryline(0,&mt("Click to download or use your browser's Save Link function"),'/'.&Apache::lonnet::declutter($hash{'src_'.$rid})).'</table></p><br />');
543: }
544: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
545: $r->print('</td>');
546: } else {
547: # for (my $incol=1;$incol<=$avespan;$incol++) {
548: # $r->print(' & ');
549: # }
550: }
551: }
552: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
553: $r->print('</tr>');
554: } else {
555: # $r->print('REMOVETHEHEADOFLONGTABLE\\\\');
556: }
557: }
558: }
559: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
560: $r->print("\n</table>");
561: } else {
562: # $r->print('\end{longtable}\strut');
563: }
564: # ---------------------------------------------------------------- Submit, etc.
565: if ($nforms) {
566: $r->print(
567: '<input name="all_submit" value="Submit All" type="'.
568: (($nforms>1)?'submit':'hidden').'"></input></form>');
569: }
570: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
571: $r->print(&Apache::loncommon::end_page({'discussion'
572: => 1,}));
573: } else {
574: $r->print('\end{document}'.$number_of_columns);
575: }
576: &Apache::lonnet::symblist($requrl,%symbhash);
577: my ($map,$id,$url)=&Apache::lonnet::decode_symb(&Apache::lonnet::symbread());
578: &Apache::lonnet::symblist($map,'last_known'=>[$url,$id]);
579: # -------------------------------------------------------------------- End page
580: }
581: # ------------------------------------------------------------- End render page
582: } else {
583: &Apache::loncommon::content_type($r,'text/html');
584: $r->send_http_header;
585: &Apache::lonsequence::viewmap($r,$requrl);
586: }
587: # ------------------------------------------------------------------ Untie hash
588: unless (untie(%hash)) {
589: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
590: "Could not untie coursemap $fn (browse).</font>");
591: }
592: # -------------------------------------------------------------------- All done
593: return OK;
594: # ----------------------------------------------- Errors, hash could no be tied
595: }
596: }
597: }
598: &Apache::loncommon::content_type($r,'text/html');
599: $r->send_http_header;
600: &Apache::lonsequence::viewmap($r,$requrl);
601: return OK;
602: }
603:
604: sub get_buttons {
605: my ($hash,$rid) = @_;
606:
607: my $metainfo = '';
608: my $esrc=&Apache::lonnet::declutter($hash->{'src_'.$rid});
609: my ($mapid,$resid)=split(/\./,$rid);
610: my $symb=&Apache::lonnet::encode_symb($hash->{'map_id_'.$mapid},
611: $resid,
612: $hash->{'src_'.$rid});
613: if ($hash->{'encrypted_'.$rid}) {
614: $symb=&Apache::lonenc::encrypted($symb);
615: $esrc=&Apache::lonenc::encrypted($esrc);
616: }
617: if ($hash->{'src_'.$rid} !~ m-^/uploaded/-
618: && $hash->{'src_'.$rid} !~ m{^https?://}
619: && !$env{'request.enc'}
620: && ($env{'request.role.adv'}
621: || !$hash->{'encrypted_'.$rid})) {
622: $metainfo .='<a name="'.&escape($symb).'" />'.
623: '<a href="'.$hash->{'src_'.$rid}.'.meta'.'" target="LONcatInfo">'.
624: '<img src="/res/adm/pages/catalog.png" class="LC_icon"'.
625: ' alt="'.&mt('Show Metadata').'"'.
626: ' title="'.&mt('Show Metadata').'" />'.
627: '</a>';
628: }
629: if (($hash->{'src_'.$rid} !~ m{^/uploaded/}) &&
630: ($hash->{'src_'.$rid} !~ m{^https?://})) {
631: $metainfo .= '<a href="/adm/evaluate?postdata='.
632: &escape($esrc).
633: '" target="LONcatInfo">'.
634: '<img src="/res/adm/pages/eval.png" class="LC_icon"'.
635: ' alt="'.&mt('Provide my evaluation of this resource').'"'.
636: ' title="'.&mt('Provide my evaluation of this resource').'" />'.
637: '</a>';
638: }
639: if (($hash->{'src_'.$rid}=~/$LONCAPA::assess_re/) &&
640: ($hash->{'src_'.$rid} !~ m-^/uploaded/-)) {
641:
642: if (&Apache::lonnet::allowed('mgr',$env{'request.course.id'})) {
643: $metainfo.=
644: '<a href="/adm/grades?symb='.&escape($symb).
645: # '&command=submission" target="LONcatInfo">'.
646: '&command=submission">'.
647: '<img src="/adm/lonMisc/subm_button.png" class="LC_icon"'.
648: ' alt="'.&mt('View Submissions for a Student or a Group of Students').'"'.
649: ' title="'.&mt('View Submissions for a Student or a Group of Students').'" />'.
650: '</a>'.
651: '<a href="/adm/grades?symb='.&escape($symb).
652: # '&command=gradingmenu" target="LONcatInfo">'.
653: '&command=gradingmenu">'.
654: '<img src="/res/adm/pages/pgrd.png" class="LC_icon"'.
655: ' alt="'.&mt('Content Grades').'"'.
656: ' title="'.&mt('Content Grades').'" />'.
657: '</a>';
658: }
659: if (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
660: $metainfo.=
661: '<a href="/adm/parmset?symb='.&escape($symb).
662: # '" target="LONcatInfo">'.
663: '" >'.
664: '<img src="/adm/lonMisc/pprm_button.png" class="LC_icon"'.
665: ' alt="'.&mt('Content Settings').'"'.
666: ' title="'.&mt('Content Settings').'" />'.
667: '</a>';
668: }
669: }
670: return $metainfo;
671: }
672:
673: 1;
674: __END__
675:
676:
677: =head1 NAME
678:
679: Apache::lonpage - Page Handler
680:
681: =head1 SYNOPSIS
682:
683: Invoked by /etc/httpd/conf/srm.conf:
684:
685: <LocationMatch "^/res/.*\.page$>
686: SetHandler perl-script
687: PerlHandler Apache::lonpage
688: </LocationMatch>
689:
690: =head1 INTRODUCTION
691:
692: This module renders a .page resource.
693:
694: This is part of the LearningOnline Network with CAPA project
695: described at http://www.lon-capa.org.
696:
697: =head1 HANDLER SUBROUTINE
698:
699: This routine is called by Apache and mod_perl.
700:
701: =over 4
702:
703: =item *
704:
705: set document type for header only
706:
707: =item *
708:
709: tie db file
710:
711: =item *
712:
713: render page
714:
715: =item *
716:
717: add to symb list
718:
719: =item *
720:
721: page parms
722:
723: =item *
724:
725: Get SSI output, post parameters
726:
727: =item *
728:
729: SSI cell rendering
730:
731: =item *
732:
733: Deal with Applet codebases
734:
735: =item *
736:
737: Build page
738:
739: =item *
740:
741: send headers
742:
743: =item *
744:
745: start body
746:
747: =item *
748:
749: start form
750:
751: =item *
752:
753: start table
754:
755: =item *
756:
757: submit element, etc, render page, untie hash
758:
759: =back
760:
761: =head1 OTHER SUBROUTINES
762:
763: =over 4
764:
765: =item *
766:
767: euclid() : Euclid's method for determining the greatest common denominator.
768:
769: =item *
770:
771: tracetable() : Build page table.
772:
773: =back
774:
775: =cut
776:
777:
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