File:
[LON-CAPA] /
rat /
lonpage.pm
Revision
1.100:
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Tue Jan 15 14:14:31 2013 UTC (11 years, 3 months ago) by
bisitz
Branches:
MAIN
CVS tags:
HEAD
- Applied 2.10 redesign icons -> Bug #5280
- Added img title re-using existing phrases fitting to the underlying function
- XHTML (alt attr. in img tag)
1: # The LearningOnline Network with CAPA
2: # Page Handler
3: #
4: # $Id: lonpage.pm,v 1.100 2013/01/15 14:14:31 bisitz 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 %posthash=('request.prefix' => $prefix,
268: 'LONCAPA_INTERNAL_no_discussion' => 'true',
269: 'symb' => $symb);
270: if (($env{'form.grade_target'} eq 'tex') ||
271: ($env{'form.answer_output_mode'} eq 'tex')) {
272: $posthash{'grade_target'}=$env{'form.grade_target'};
273: $posthash{'textwidth'}=$env{'form.textwidth'};
274: $posthash{'problem_split'}=$env{'form.problem_split'};
275: $posthash{'latex_type'}=$env{'form.latex_type'};
276: $posthash{'rndseed'}=$env{'form.rndseed'};
277: $posthash{'answer_output_mode'} = $env{'form.answer_output_mode'};
278: }
279: my $submitted=exists($env{'form.all_submit'});
280: if (!$submitted) {
281: foreach my $key (keys(%env)) {
282: if ($key=~/^form.\Q$prefix\Esubmit_/) {
283: $submitted=1;last;
284: }
285: }
286: }
287: if ($submitted) {
288: foreach my $key (keys(%env)) {
289: if ($key=~/^form.\Q$prefix\E/) {
290: my $name=$key;
291: $name=~s/^form.\Q$prefix\E//;
292: $posthash{$name}=$env{$key};
293: }
294: }
295: if (exists($env{'form.all_submit'})) {
296: $posthash{'all_submit'}='yes';
297: }
298: }
299: my $output=Apache::lonnet::ssi($src,%posthash);
300: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
301: if (($target eq 'tex') || ($target eq 'tex_answer')) {
302: $output =~ s/^([^&]+)\\begin{document}//;
303: $output =~ s/\\end{document}//;
304: # $output = '\parbox{\minipagewidth}{ '.$output.' }';
305: #some additional cleanup necessary for LateX (due to limitations of table environment
306: $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g;
307: }
308: my $parser=HTML::TokeParser->new(\$output);
309: my $token;
310: my $thisdir=$src;
311: my $bodydef=0;
312: my $thisxml=0;
313: my @rlinks=();
314: if ($output=~/\?xml/) {
315: $isxml=1;
316: $thisxml=1;
317: $output=~
318: /((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si;
319: $xmlheader=$1;
320: }
321: while ($token=$parser->get_token) {
322: if ($token->[0] eq 'S') {
323: if ($token->[1] eq 'a') {
324: if ($token->[2]->{'href'}) {
325: $rlinks[$#rlinks+1]=
326: $token->[2]->{'href'};
327: }
328: } elsif ($token->[1] eq 'img') {
329: $rlinks[$#rlinks+1]=
330: $token->[2]->{'src'};
331: } elsif ($token->[1] eq 'embed') {
332: $rlinks[$#rlinks+1]=
333: $token->[2]->{'src'};
334: } elsif ($token->[1] eq 'base') {
335: $thisdir=$token->[2]->{'href'};
336: } elsif ($token->[1] eq 'body') {
337: $bodydef=1;
338: $ssibgcolor{$_}=$token->[2]->{'bgcolor'};
339: $ssitext{$_}=$token->[2]->{'text'};
340: $ssilink{$_}=$token->[2]->{'link'};
341: $ssivlink{$_}=$token->[2]->{'vlink'};
342: $ssialink{$_}=$token->[2]->{'alink'};
343: if ($thisxml) {
344: $xmlbody=$token->[4];
345: }
346: } elsif ($token->[1] eq 'meta') {
347: if ($token->[4] !~ m:/>$:) {
348: $allmeta.="\n".$token->[4].'</meta>';
349: } else {
350: $allmeta.="\n".$token->[4];
351: }
352: } elsif (($token->[1] eq 'script') &&
353: ($bodydef==0)) {
354: $allscript.="\n\n"
355: .$parser->get_text('/script');
356: }
357: }
358: }
359: if ($output=~/\<body[^\>]*\>(.*)/si) {
360: $output=$1;
361: }
362: $output=~s/\<\/body\>.*//si;
363: if ($output=~/\<form/si) {
364: $nforms++;
365: $output=~s/\<form[^\>]*\>//gsi;
366: $output=~s/\<\/form[^\>]*\>//gsi;
367: if ($output=~/\<input[^\>]+name\s*=\s*[\'\"]*HWFILE/) {
368: $nuploads++;
369: }
370: $output=~
371: s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi;
372: if ($nuploads) {
373: $output=~
374: s/\<(input[^\>]+name=\"\Q$prefix\EHWFILE[^\>]+)\s*id\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\)]*)\>/\<$1 id="$prefix$2" $3\>/gsi;
375: ($turninpaths{$prefix},$multiresps{$prefix}) =
376: &Apache::loncommon::get_turnedin_filepath($symb,$env{'user.name'},$env{'user.domain'});
377: if ($turninparent eq '') {
378: $turninparent = $turninpaths{$prefix};
379: $turninparent =~ s{(/[^/]+)$}{};
380: }
381: }
382: $output=~
383: s/\<((?:input|select)[^\>]+\Qjavascript:setSubmittedPart\E)\(\s*[\'\"]([^\'\"]+)[\'\"]*\s*\)/\<$1('$2','$prefix')/gsi;
384: }
385: $thisdir=~s/\/[^\/]*$//;
386: foreach (@rlinks) {
387: unless (($_=~/^https?\:\/\//i) ||
388: ($_=~/^\//) ||
389: ($_=~/^javascript:/i) ||
390: ($_=~/^mailto:/i) ||
391: ($_=~/^\#/)) {
392: my $newlocation=
393: &Apache::lonnet::hreflocation($thisdir,$_);
394: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
395: }
396: }
397: # -------------------------------------------------- Deal with Applet codebases
398: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
399: $ssibody{$_}=$output;
400: # ---------------------------------------------------------------- End SSI cell
401: }
402: }
403: }
404: }
405: unless ($contents) {
406: &Apache::loncommon::content_type($r,'text/html');
407: $r->send_http_header;
408: $r->print(&Apache::loncommon::start_page(undef,undef,
409: {'force_register' => 1,}));
410: $r->print(&mt('This page is either empty or it only contains resources that are currently hidden').'. ');
411: $r->print('<br /><br />'.&mt('Please use the LON-CAPA navigation arrows to move to another item in the course').
412: &Apache::loncommon::end_page());
413: } else {
414: # ------------------------------------------------------------------ Build page
415:
416: # ---------------------------------------------------------------- Send headers
417: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
418: if ($isxml) {
419: &Apache::loncommon::content_type($r,'text/xml');
420: } else {
421: &Apache::loncommon::content_type($r,'text/html');
422: }
423: $r->send_http_header;
424: # ------------------------------------------------------------------------ Head
425: if ($allscript) {
426: $allscript =
427: "\n".'<script type="text/javascript">'."\n".
428: $allscript.
429: "\n</script>\n";
430: }
431: if (($nforms) && ($nuploads)) {
432: $allscript .= &Apache::lonhtmlcommon::file_submissionchk_js(\%turninpaths,\%multiresps);
433: }
434: # ------------------------------------------------------------------ Start body
435: $r->print(&Apache::loncommon::start_page(undef,$allscript,
436: {'force_register' => 1,
437: 'bgcolor' => '#ffffff',}));
438: # ------------------------------------------------------------------ Start form
439: if ($nforms) {
440: my $fmtag = '<form name="lonhomework" method="post" enctype="multipart/form-data"';
441: if ($nuploads) {
442: my $multi;
443: if ($nuploads > 1) {
444: $multi = 1;
445: }
446: $fmtag .= 'onsubmit="return file_submission_check(this,'."'$turninparent','$multi'".');"';
447: }
448: $fmtag .= ' action="'.
449: &Apache::lonenc::check_encrypt($requrl)
450: .'">';
451: $r->print($fmtag);
452: }
453: } elsif (($target eq 'tex') || ($target eq 'tex_answer')) {
454: # I think this is not needed as the header
455: # will be put in for each of the page parts
456: # by the londefdef.pm now that we are opening up
457: # the parts of a page.
458: #$r->print('\documentclass{article}
459: # \newcommand{\keephidden}[1]{}
460: # \usepackage[dvips]{graphicx}
461: # \usepackage{epsfig}
462: # \usepackage{calc}
463: # \usepackage{longtable}
464: # \begin{document}');
465: }
466: # ----------------------------------------------------------------- Start table
467: if (($target eq 'tex') || ($target eq 'tex_answer')) {
468: # # $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead ');
469: if ($number_of_columns le $lcm) {$number_of_columns=$lcm;};
470: } else {
471: $r->print('<table width="100%" cols="'.$lcm.'" border="0">');
472: }
473: # generate rows
474: for ($i=0;$i<=$#rows;$i++) {
475: if ($rows[$i]) {
476: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
477: $r->print("\n<tr>");
478: }
479: my @colcont=split(/\&/,$rows[$i]);
480: my $avespan=$lcm/($#colcont+1);
481: for ($j=0;$j<=$#colcont;$j++) {
482: my $rid=$colcont[$j];
483:
484: my $metainfo =&get_buttons(\%hash,$rid).'<br />';
485: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
486: $r->print('<td colspan="'.$avespan.'"');
487: }
488: if (($cellemb{$rid} eq 'ssi') || ($cellexternal{$rid})) {
489: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
490: if ($ssibgcolor{$rid}) {
491: $r->print(' bgcolor="'.
492: $ssibgcolor{$rid}.'"');
493: }
494: $r->print('>'.$metainfo.'<font');
495:
496: if ($ssitext{$rid}) {
497: $r->print(' text="'.$ssitext{$rid}.'"');
498: }
499: if ($ssilink{$rid}) {
500: $r->print(' link="'.$ssilink{$rid}.'"');
501: }
502: if ($ssitext{$rid}) {
503: $r->print(' vlink="'.$ssivlink{$rid}.'"');
504: }
505: if ($ssialink{$rid}) {
506: $r->print(' alink="'.$ssialink{$rid}.'"');
507: }
508: $r->print('>');
509: }
510: unless (($cellexternal{$rid}) &&
511: ($target eq 'tex') && ($target eq 'tex_answer')) {
512: $r->print($ssibody{$rid});
513: }
514: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
515: $r->print('</font>');
516: }
517: if ($env{'course.'.
518: $env{'request.course.id'}.
519: '.pageseparators'} eq 'yes') {
520: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
521: $r->print('<hr />');
522: }
523: }
524: } elsif ($cellemb{$rid} eq 'img') {
525: $r->print('>'.$metainfo.'<img src="'.
526: $hash{'src_'.$rid}.'" />');
527: } elsif ($cellemb{$rid} eq 'emb') {
528: $r->print('>'.$metainfo.'<embed src="'.
529: $hash{'src_'.$rid}.'"></embed>');
530: } elsif (&Apache::lonnet::declutter($hash{'src_'.$rid}) !~/\.(sequence|page)$/) {
531: $r->print($metainfo.'<b>'.$hash{'title_'.$rid}.'</b><br />'.
532: &mt('It is recommended that you use an up-to-date virus scanner before handling this file.').'</p><p><table>'.
533: &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 />');
534: }
535: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
536: $r->print('</td>');
537: } else {
538: # for (my $incol=1;$incol<=$avespan;$incol++) {
539: # $r->print(' & ');
540: # }
541: }
542: }
543: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
544: $r->print('</tr>');
545: } else {
546: # $r->print('REMOVETHEHEADOFLONGTABLE\\\\');
547: }
548: }
549: }
550: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
551: $r->print("\n</table>");
552: } else {
553: # $r->print('\end{longtable}\strut');
554: }
555: # ---------------------------------------------------------------- Submit, etc.
556: if ($nforms) {
557: $r->print(
558: '<input name="all_submit" value="Submit All" type="'.
559: (($nforms>1)?'submit':'hidden').'"></input></form>');
560: }
561: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
562: $r->print(&Apache::loncommon::end_page({'discussion'
563: => 1,}));
564: } else {
565: $r->print('\end{document}'.$number_of_columns);
566: }
567: &Apache::lonnet::symblist($requrl,%symbhash);
568: my ($map,$id,$url)=&Apache::lonnet::decode_symb(&Apache::lonnet::symbread());
569: &Apache::lonnet::symblist($map,'last_known'=>[$url,$id]);
570: # -------------------------------------------------------------------- End page
571: }
572: # ------------------------------------------------------------- End render page
573: } else {
574: &Apache::loncommon::content_type($r,'text/html');
575: $r->send_http_header;
576: &Apache::lonsequence::viewmap($r,$requrl);
577: }
578: # ------------------------------------------------------------------ Untie hash
579: unless (untie(%hash)) {
580: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
581: "Could not untie coursemap $fn (browse).</font>");
582: }
583: # -------------------------------------------------------------------- All done
584: return OK;
585: # ----------------------------------------------- Errors, hash could no be tied
586: }
587: }
588: }
589: &Apache::loncommon::content_type($r,'text/html');
590: $r->send_http_header;
591: &Apache::lonsequence::viewmap($r,$requrl);
592: return OK;
593: }
594:
595: sub get_buttons {
596: my ($hash,$rid) = @_;
597:
598: my $metainfo = '';
599: my $esrc=&Apache::lonnet::declutter($hash->{'src_'.$rid});
600: my ($mapid,$resid)=split(/\./,$rid);
601: my $symb=&Apache::lonnet::encode_symb($hash->{'map_id_'.$mapid},
602: $resid,
603: $hash->{'src_'.$rid});
604: if ($hash->{'encrypted_'.$rid}) {
605: $symb=&Apache::lonenc::encrypted($symb);
606: $esrc=&Apache::lonenc::encrypted($esrc);
607: }
608: if ($hash->{'src_'.$rid} !~ m-^/uploaded/-
609: && $hash->{'src_'.$rid} !~ m{^https?://}
610: && !$env{'request.enc'}
611: && ($env{'request.role.adv'}
612: || !$hash->{'encrypted_'.$rid})) {
613: $metainfo .='<a name="'.&escape($symb).'" />'.
614: '<a href="'.$hash->{'src_'.$rid}.'.meta'.'" target="LONcatInfo">'.
615: '<img src="/res/adm/pages/catalog.png" class="LC_icon"'.
616: ' alt="'.&mt('Show Metadata').'"'.
617: ' title="'.&mt('Show Metadata').'" />'.
618: '</a>';
619: }
620: if (($hash->{'src_'.$rid} !~ m{^/uploaded/}) &&
621: ($hash->{'src_'.$rid} !~ m{^https?://})) {
622: $metainfo .= '<a href="/adm/evaluate?postdata='.
623: &escape($esrc).
624: '" target="LONcatInfo">'.
625: '<img src="/res/adm/pages/eval.png" class="LC_icon"'.
626: ' alt="'.&mt('Provide my evaluation of this resource').'"'.
627: ' title="'.&mt('Provide my evaluation of this resource').'" />'.
628: '</a>';
629: }
630: if (($hash->{'src_'.$rid}=~/$LONCAPA::assess_re/) &&
631: ($hash->{'src_'.$rid} !~ m-^/uploaded/-)) {
632:
633: if (&Apache::lonnet::allowed('mgr',$env{'request.course.id'})) {
634: $metainfo.=
635: '<a href="/adm/grades?symb='.&escape($symb).
636: # '&command=submission" target="LONcatInfo">'.
637: '&command=submission">'.
638: '<img src="/adm/lonMisc/subm_button.png" class="LC_icon"'.
639: ' alt="'.&mt('View Submissions for a Student or a Group of Students').'"'.
640: ' title="'.&mt('View Submissions for a Student or a Group of Students').'" />'.
641: '</a>'.
642: '<a href="/adm/grades?symb='.&escape($symb).
643: # '&command=gradingmenu" target="LONcatInfo">'.
644: '&command=gradingmenu">'.
645: '<img src="/res/adm/pages/pgrd.png" class="LC_icon"'.
646: ' alt="'.&mt('Content Grades').'"'.
647: ' title="'.&mt('Content Grades').'" />'.
648: '</a>';
649: }
650: if (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
651: $metainfo.=
652: '<a href="/adm/parmset?symb='.&escape($symb).
653: # '" target="LONcatInfo">'.
654: '" >'.
655: '<img src="/adm/lonMisc/pprm_button.png" class="LC_icon"'.
656: ' alt="'.&mt('Content Settings').'"'.
657: ' title="'.&mt('Content Settings').'" />'.
658: '</a>';
659: }
660: }
661: return $metainfo;
662: }
663:
664: 1;
665: __END__
666:
667:
668: =head1 NAME
669:
670: Apache::lonpage - Page Handler
671:
672: =head1 SYNOPSIS
673:
674: Invoked by /etc/httpd/conf/srm.conf:
675:
676: <LocationMatch "^/res/.*\.page$>
677: SetHandler perl-script
678: PerlHandler Apache::lonpage
679: </LocationMatch>
680:
681: =head1 INTRODUCTION
682:
683: This module renders a .page resource.
684:
685: This is part of the LearningOnline Network with CAPA project
686: described at http://www.lon-capa.org.
687:
688: =head1 HANDLER SUBROUTINE
689:
690: This routine is called by Apache and mod_perl.
691:
692: =over 4
693:
694: =item *
695:
696: set document type for header only
697:
698: =item *
699:
700: tie db file
701:
702: =item *
703:
704: render page
705:
706: =item *
707:
708: add to symb list
709:
710: =item *
711:
712: page parms
713:
714: =item *
715:
716: Get SSI output, post parameters
717:
718: =item *
719:
720: SSI cell rendering
721:
722: =item *
723:
724: Deal with Applet codebases
725:
726: =item *
727:
728: Build page
729:
730: =item *
731:
732: send headers
733:
734: =item *
735:
736: start body
737:
738: =item *
739:
740: start form
741:
742: =item *
743:
744: start table
745:
746: =item *
747:
748: submit element, etc, render page, untie hash
749:
750: =back
751:
752: =head1 OTHER SUBROUTINES
753:
754: =over 4
755:
756: =item *
757:
758: euclid() : Euclid's method for determining the greatest common denominator.
759:
760: =item *
761:
762: tracetable() : Build page table.
763:
764: =back
765:
766: =cut
767:
768:
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