File:
[LON-CAPA] /
rat /
lonpage.pm
Revision
1.141:
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Tue Sep 13 12:22:15 2022 UTC (2 years ago) by
raeburn
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MAIN
CVS tags:
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- In course context, switch server to resource's home server opens new tab
when editing published resource, and ca role is loaded, when user's domain
(by default) disallows session hosting of domain's users in resource's domain.
- New arg (skip_enc_check) in redirect args , used by loncommon::headtag()
it true, omit application of check_encrypt().
- New seventh item ($shownsymb) in args for lonhtmlcommon::jump_to_editres()
1: # The LearningOnline Network with CAPA
2: # Page Handler
3: #
4: # $Id: lonpage.pm,v 1.141 2022/09/13 12:22:15 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::lonhtmlcommon;
40: use Apache::lonxml();
41: use Apache::lonlocal;
42: use Apache::lonmenu;
43: use Apache::lonhomework;
44: use Apache::lonparmset;
45: use Apache::lonenc();
46: use HTML::TokeParser;
47: use HTML::Entities();
48: use GDBM_File;
49: use Apache::lonsequence;
50: use lib '/home/httpd/lib/perl/';
51: use LONCAPA;
52:
53:
54: # -------------------------------------------------------------- Module Globals
55: my %hash;
56: my @rows;
57:
58: # ------------------------------------------------------------------ Euclid gcd
59:
60: sub euclid {
61: my ($e,$f)=@_;
62: my $a; my $b; my $r;
63: if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; }
64: while ($r!=0) {
65: $a=$b; $b=$r;
66: $r=$a%$b;
67: }
68: return $b;
69: }
70:
71: # ------------------------------------------------------------ Build page table
72:
73: sub tracetable {
74: my ($sofar,$rid,$beenhere)=@_;
75: my $further=$sofar;
76: my $randomout=0;
77: unless ($env{'request.role.adv'}) {
78: $randomout = $hash{'randomout_'.$rid};
79: }
80: unless ($beenhere=~/\&$rid\&/) {
81: $beenhere.=$rid.'&';
82: unless ($randomout) {
83: if (defined($hash{'is_map_'.$rid})) {
84: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
85: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
86: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
87: $sofar=
88: &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},
89: '&'.$frid.$beenhere);
90: $sofar++;
91: if ($hash{'src_'.$frid}) {
92: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid});
93: if (($brepriv eq '2') || ($brepriv eq 'F')) {
94: if (defined($rows[$sofar])) {
95: $rows[$sofar].='&'.$frid;
96: } else {
97: $rows[$sofar]=$frid;
98: }
99: }
100: }
101: }
102: } else {
103: $sofar++;
104: if ($hash{'src_'.$rid}) {
105: my ($mapid,$resid)=split(/\./,$rid);
106: my $symb = &Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$hash{'src_'.$rid});
107: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid},$symb);
108: if (($brepriv eq '2') || ($brepriv eq 'F')) {
109: if (defined($rows[$sofar])) {
110: $rows[$sofar].='&'.$rid;
111: } else {
112: $rows[$sofar]=$rid;
113: }
114: }
115: }
116: }
117: }
118:
119: if (defined($hash{'to_'.$rid})) {
120: my $mincond=1;
121: my $next='';
122: foreach (split(/\,/,$hash{'to_'.$rid})) {
123: my $thiscond=
124: &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}});
125: if ($thiscond>=$mincond) {
126: if ($next) {
127: $next.=','.$_.':'.$thiscond;
128: } else {
129: $next=$_.':'.$thiscond;
130: }
131: if ($thiscond>$mincond) { $mincond=$thiscond; }
132: }
133: }
134: foreach (split(/\,/,$next)) {
135: my ($linkid,$condval)=split(/\:/,$_);
136: if ($condval>=$mincond) {
137: my $now=&tracetable($sofar,$hash{'goesto_'.$linkid},$beenhere);
138: if ($now>$further) { $further=$now; }
139: }
140: }
141: }
142: }
143: return $further;
144: }
145:
146: # ================================================================ Main Handler
147:
148: sub handler {
149: my $r=shift;
150:
151: # ------------------------------------------- Set document type for header only
152:
153: if ($r->header_only) {
154: if ($env{'browser.mathml'}) {
155: &Apache::loncommon::content_type($r,'text/xml');
156: } else {
157: &Apache::loncommon::content_type($r,'text/html');
158: }
159: $r->send_http_header;
160: return OK;
161: }
162:
163: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
164: ['forceselect','launch']);
165: my $number_of_columns = 1;
166: my $requrl=$r->uri;
167: my $target = $env{'form.grade_target'};
168:
169: # Short term solution: define target as 'tex_answer' when retrieving answers
170: # for resources in a .page when generating printouts.
171: # A better long-term fix would be to modify the way problem rendering, and
172: # answer rendering are retrieved for individual resources when printing a .page,
173: # so rendered problem and answer are sequential for individual resources in
174: # the .page
175: #
176: if ($target eq 'answer') {
177: if ($env{'form.answer_output_mode'} eq 'tex') {
178: $target = 'tex_answer';
179: }
180: }
181: # &Apache::lonnet::logthis("Got a target of $target");
182: if ($target eq 'meta') {
183: &Apache::loncommon::content_type($r,'text/html');
184: $r->send_http_header;
185: return OK;
186: }
187: # ----------------------------------------------------------------- Tie db file
188: if (($env{'request.course.fn'}) && (!$env{'form.forceselect'})) {
189: my $fn=$env{'request.course.fn'};
190: if (-e "$fn.db") {
191: my %buttonshide;
192: my $hostname = $r->hostname();
193: my $lonhost = $r->dir_config('lonHostID');
194: my $ip = &Apache::lonnet::get_host_ip($lonhost);
195: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) {
196: # ------------------------------------------------------------------- Hash tied
197: my $firstres=$hash{'map_start_'.$requrl};
198: my $lastres=$hash{'map_finish_'.$requrl};
199: if (($firstres) && ($lastres)) {
200: # ------------------------------------------------------------- Countdown Timer
201: my $now = time;
202: my ($pagefirstaccess,%hastimeleft,%countdowndisp,%donebutton,
203: %donebtnextra,%buttonbytime,$donetime,$symbtosetdone);
204: my ($pagesymb,$courseid,$domain,$name)=&Apache::lonnet::whichuser();
205: unless ($pagesymb) {
206: $pagesymb=&Apache::lonnet::symbread($requrl);
207: }
208: if ($pagesymb && ($courseid ne '') && ($domain ne '') && ($name ne '')) {
209: my %times=&Apache::lonnet::get('firstaccesstimes',
210: [$courseid."\0".$pagesymb],
211: $domain,$name);
212: if ($times{$courseid."\0".$pagesymb} =~ /^\d+$/) {
213: $pagefirstaccess = $times{$courseid."\0".$pagesymb};
214: if ($pagefirstaccess && $env{'form.LC_interval_done'} eq 'true') {
215: $donetime = $now - $pagefirstaccess;
216: }
217: }
218: }
219:
220: # ----------------------------------------------------------------- Render page
221:
222: @rows=();
223:
224: &tracetable(0,$firstres,'&');
225:
226: # ------------------------------------------------------------ Add to symb list
227:
228: my $i;
229: my %symbhash=();
230: for ($i=0;$i<=$#rows;$i++) {
231: if ($rows[$i]) {
232: my @colcont=split(/\&/,$rows[$i]);
233: foreach my $rid (@colcont) {
234: my ($mapid,$resid)=split(/\./,$rid);
235: $symbhash{$hash{'src_'.$rid}}=
236: [$hash{'src_'.$rid},$resid];
237: if (($donetime) && ($symbtosetdone eq '')) {
238: my $src = $hash{'src_'.$rid};
239: if ($hash{'encrypted_'.$rid}) {
240: $src=&Apache::lonenc::encrypted($src);
241: }
242: my ($mapid,$resid)=split(/\./,$rid);
243: my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$src);
244: if ($src =~ /$LONCAPA::assess_re/) {
245: my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb);
246: if (@interval > 1) {
247: if (($interval[1] eq 'map') && ($pagefirstaccess)) {
248: my ($timelimit) = ($interval[0] =~ /^(\d+)/);
249: if ($timelimit) {
250: if ($pagefirstaccess + $timelimit > $now) {
251: $symbtosetdone = $symb;
252: }
253: }
254: }
255: }
256: }
257: }
258: }
259: }
260: }
261: &Apache::lonnet::symblist($requrl,%symbhash);
262:
263: # ------------------------------------------------------------------ Page parms
264:
265: my $j;
266: my $lcm=1;
267: my $contents=0;
268: my $nforms=0;
269: my $nuploads=0;
270: my $ntimers=0;
271: my %turninpaths;
272: my %multiresps;
273: my $turninparent;
274:
275: my %ssibody=();
276: my %ssibgcolor=();
277: my %ssitext=();
278: my %ssilink=();
279: my %ssivlink=();
280: my %ssialink=();
281: my %cssrefs=();
282: my %httpref=();
283:
284: my %cellemb=();
285: my %cellexternal=();
286:
287: my $allscript='';
288: my $allmeta='';
289:
290: my $isxml=0;
291: my $xmlheader='';
292: my $xmlbody='';
293:
294: # ---------------------------------------------------------- Handle Done button
295:
296: # Set the event timer to zero if the "done button" was clicked.
297: if ($donetime && $symbtosetdone) {
298: &Apache::lonparmset::storeparm_by_symb_inner($symbtosetdone,'0_interval',
299: 2,$donetime,'date_interval',
300: $name,$domain);
301: undef($env{'form.LC_interval_done'});
302: }
303:
304: # --------------------------------------------- Get SSI output, post parameters
305:
306: for ($i=0;$i<=$#rows;$i++) {
307: if ($rows[$i]) {
308: $contents++;
309: my @colcont=split(/\&/,$rows[$i]);
310: $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1));
311: foreach (@colcont) {
312: my $src=$hash{'src_'.$_};
313: my $plainsrc = $src;
314: my $anchor;
315: if ($hash{'ext_'.$_} eq 'true:') {
316: $cellexternal{$_}=($hash{'ext_'.$_} eq 'true:');
317: $src =~ s{^/ext/}{http://};
318: $src =~ s{http://https://}{https://};
319: if ($src =~ /(\#[^#]+)$/) {
320: $anchor = $1;
321: $src =~ s/\#[^#]+$//;
322: }
323: }
324: my $unencsrc = $src;
325: my ($extension)=($src=~/\.(\w+)$/);
326: if ($hash{'encrypted_'.$_}) {
327: $src=&Apache::lonenc::encrypted($src);
328: }
329: my ($mapid,$resid)=split(/\./,$_);
330: my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$plainsrc);
331: unless ($env{'request.role.adv'}) {
332: $buttonshide{$symb} = &Apache::lonnet::EXT("resource.0.buttonshide",$symb);
333: }
334: $cellemb{$_}=
335: &Apache::loncommon::fileembstyle($extension);
336: if ($cellexternal{$_}) {
337: if (($target eq 'tex') || ($target eq 'tex_answer')) {
338: my $shown = $src.$anchor;
339: if (($hash{'encrypted_'.$_}) && (!$env{'request.role.adv'})) {
340: $shown = &mt('URL not shown (encrypted)');
341: }
342: my $title=&Apache::lonnet::gettitle($symb);
343: $title = &Apache::lonxml::latex_special_symbols($title);
344: $shown = &Apache::lonxml::latex_special_symbols($shown);
345: $ssibody{$_} = ' \strut \\\\ \textit{'.$title.'} \strut \\\\ '.$shown.'\\\\';
346: } else {
347: my $showsrc = $src;
348: my ($is_pdf,$title,$linktext);
349: if ($unencsrc =~ /\.pdf$/i) {
350: $is_pdf = 1;
351: }
352: if (($hash{'encrypted_'.$_}) && ($symb)) {
353: $title=&Apache::lonnet::gettitle(&Apache::lonenc::encrypted($symb));
354: } else {
355: $title=&Apache::lonnet::gettitle($symb);
356: }
357: if ($env{'browser.mobile'}) {
358: if ($is_pdf) {
359: $linktext = &mt('Link to PDF (for mobile devices)');
360: $ssibody{$_} = &create_extlink($unencsrc,$anchor,$title,$linktext);
361: } else {
362: $linktext = &mt('Link to resource');
363: $ssibody{$_} = &create_extlink($unencsrc,$anchor,$title,$linktext);
364: }
365: } else {
366: my $absolute = $env{'request.use_absolute'};
367: my $uselink = &Apache::loncommon::is_nonframeable($unencsrc,$absolute,$hostname,$ip);
368: if (($uselink) || (($ENV{'SERVER_PORT'} == 443) && ($unencsrc =~ m{^http://}))) {
369: $linktext = &mt('Link to resource');
370: $ssibody{$_} = &create_extlink($unencsrc,$anchor,$title,$linktext);
371: } else {
372: if (($hash{'encrypted_'.$_}) && ($symb) && (!$env{'request.role.adv'})) {
373: $showsrc .= '?symb='.&Apache::lonenc::encrypted($symb);
374: } elsif ($anchor) {
375: $showsrc .= $anchor;
376: }
377: $ssibody{$_} = <<ENDEXT;
378: <iframe src="$showsrc" width="100%" height="300px">No iframe support!</iframe>
379: ENDEXT
380: }
381: }
382: }
383: } elsif ($cellemb{$_} eq 'ssi') {
384: # --------------------------------------------------------- This is an SSI cell
385: my $prefix='p_'.$_.'_';
386: my $idprefix= 'p_'.join('_',($mapid,$resid,''));
387: my %posthash=('request.prefix' => $prefix,
388: 'LONCAPA_INTERNAL_no_discussion' => 'true',
389: 'symb' => $symb);
390: if (($env{'form.grade_target'} eq 'tex') ||
391: ($env{'form.answer_output_mode'} eq 'tex')) {
392: $posthash{'grade_target'}=$env{'form.grade_target'};
393: $posthash{'textwidth'}=$env{'form.textwidth'};
394: $posthash{'problem_split'}=$env{'form.problem_split'};
395: $posthash{'latex_type'}=$env{'form.latex_type'};
396: $posthash{'rndseed'}=$env{'form.rndseed'};
397: $posthash{'answer_output_mode'} = $env{'form.answer_output_mode'};
398: }
399: my $submitted=$env{'form.all_submit_pressed'};
400: if (!$submitted) {
401: foreach my $key (keys(%env)) {
402: if ($key=~/^\Qform.$prefix\Esubmit_(.+)_pressed$/) {
403: if ($env{$key}) {
404: $submitted=1;
405: last;
406: }
407: }
408: }
409: }
410: if ($submitted) {
411: foreach my $key (keys(%env)) {
412: if ($key=~/^\Qform.$prefix\E/) {
413: my $name=$key;
414: $name=~s/^\Qform.$prefix\E//;
415: $posthash{$name}=$env{$key};
416: }
417: }
418: if ($env{'form.all_submit_pressed'}) {
419: $posthash{'all_submit'}='yes';
420: }
421: } elsif ($env{'form.'.$prefix.'markaccess'} eq 'yes') {
422: $posthash{'markaccess'} = $env{'form.'.$prefix.'markaccess'};
423: }
424: my $output=Apache::lonnet::ssi($src,%posthash);
425: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
426: if (($target eq 'tex') || ($target eq 'tex_answer')) {
427: $output =~ s/^([^&]+)\\begin\{document}//;
428: $output =~ s/\\end\{document}//;
429: # $output = '\parbox{\minipagewidth}{ '.$output.' }';
430: #some additional cleanup necessary for LateX (due to limitations of table environment
431: $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g;
432: }
433: my $matheditor;
434: if ($output =~ /\Qjavascript:LC_mathedit_HWVAL_\E/) {
435: $matheditor = 'dragmath';
436: } elsif ($output =~ /LCmathField/) {
437: $matheditor = 'lcmath';
438: }
439: my $parser=HTML::TokeParser->new(\$output);
440: my $token;
441: my $thisdir=$src;
442: my $bodydef=0;
443: my $thisxml=0;
444: my @rlinks=();
445: my @css_hrefs=();
446: if ($output=~/\?xml/) {
447: $isxml=1;
448: $thisxml=1;
449: $output=~
450: /((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si;
451: $xmlheader=$1;
452: }
453: while ($token=$parser->get_token) {
454: if ($token->[0] eq 'S') {
455: if ($token->[1] eq 'a') {
456: if ($token->[2]->{'href'}) {
457: $rlinks[$#rlinks+1]=
458: $token->[2]->{'href'};
459: }
460: } elsif ($token->[1] eq 'img') {
461: $rlinks[$#rlinks+1]=
462: $token->[2]->{'src'};
463: } elsif ($token->[1] eq 'embed') {
464: $rlinks[$#rlinks+1]=
465: $token->[2]->{'src'};
466: } elsif ($token->[1] eq 'base') {
467: $thisdir=$token->[2]->{'href'};
468: } elsif ($token->[1] eq 'body') {
469: $bodydef=1;
470: $ssibgcolor{$_}=$token->[2]->{'bgcolor'};
471: $ssitext{$_}=$token->[2]->{'text'};
472: $ssilink{$_}=$token->[2]->{'link'};
473: $ssivlink{$_}=$token->[2]->{'vlink'};
474: $ssialink{$_}=$token->[2]->{'alink'};
475: if ($thisxml) {
476: $xmlbody=$token->[4];
477: }
478: } elsif ($token->[1] eq 'meta') {
479: if ($token->[4] !~ m:/>$:) {
480: $allmeta.="\n".$token->[4].'</meta>';
481: } else {
482: $allmeta.="\n".$token->[4];
483: }
484: } elsif (($token->[1] eq 'script') &&
485: ($bodydef==0)) {
486: $allscript.="\n\n"
487: .$parser->get_text('/script');
488: } elsif (($token->[1] eq 'link') &&
489: ($bodydef==0)) {
490: if (($token->[2]->{'href'} !~ m{^/adm/}) &&
491: ($token->[2]->{'rel'} eq 'stylesheet')) {
492: $css_hrefs[$#css_hrefs+1]=
493: $token->[2]->{'href'};
494:
495: }
496: }
497: }
498: }
499: if ($output=~/\<body[^\>]*\>(.*)/si) {
500: $output=$1;
501: }
502: $output=~s/\<\/body\>.*//si;
503: if ($output=~/\<form/si) {
504: my $hastimer;
505: $nforms++;
506: $output=~s/\<form[^\>]*\>//gsi;
507: $output=~s/\<\/form[^\>]*\>//gsi;
508: if ($output=~/\<input[^\>]+name\s*=\s*[\'\"]*HWFILE/) {
509: $nuploads++;
510: }
511: if ($output=~/\<input[^\>]+name\s*=\s*[\'\"]*accessbutton/) {
512: $ntimers++;
513: $hastimer = 1;
514: }
515: $output=~
516: s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi;
517: $output=~
518: s/\<((?:input|select|button|textarea)[^\>]+)id\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 id="$idprefix$2" $3\>/gsi;
519: $output=~
520: s/(\Qthis.form.elements['\E)(HW(?:VAL|CHK)_[^']+\'\]\.(?:value=\'|checked))/$1$prefix$2/gsi;
521: if ($hastimer) {
522: $output=~
523: s/\<(input[^\>]+name=\Q"$prefix\Eaccessbutton"[^\>]+)(?:\Qdocument.markaccess.submit();\E)([^\>]*)\>/\<$1pageTimer(this.form,'$prefix')$2\>/gsi;
524: $output=~ s/\<(input[^\>]+name=\Q"$prefix\Emarkaccess"[^\>]+value=["'])(?:yes)(['"][^\>]*)\>/\<$1$2\>/gsi;
525: }
526: if ($matheditor eq 'dragmath') {
527: $output=~
528: s/(\Qjavascript:LC_mathedit_\E)(HWVAL_)([^'"]+?)(\(['"]*)(\QHWVAL_\E\3['"]\)\;void\(0\)\;)/$1$idprefix$2$3$4$idprefix$5/g;
529: $output=~
530: s/(function\s+LC_mathedit_)(HWVAL_)([^'"]+?)(\s+\(LCtextline\))/$1$idprefix$2$3$4/g;
531: } elsif ($matheditor eq 'lcmath') {
532: $output=~
533: s/(var\s+LCmathField\s+=\s+document\.getElementById\(['"])([^'"]+?)(['"]\)\;)/$1$idprefix$2$3/g;
534: }
535: $output=~
536: s/(\Q<div id="msg_\E)(\Qsubmit_\E)([^"]*)(\Q" style="display:none">\E)/<input type="hidden" name="$prefix$2$3_pressed" id="$idprefix$2$3_pressed" value="" \/>$1$idprefix$2$3$4/g;
537: $output=~
538: s/(\Q<td class="LC_status_\E)(\Qsubmit_\E)([^\"]*)(\s*[^\"]*"\>)/$1$idprefix$2$3$4/g;
539: if ($nuploads) {
540: ($turninpaths{$prefix},$multiresps{$prefix}) =
541: &Apache::loncommon::get_turnedin_filepath($symb,$env{'user.name'},$env{'user.domain'});
542: if ($turninparent eq '') {
543: $turninparent = $turninpaths{$prefix};
544: $turninparent =~ s{(/[^/]+)$}{};
545: }
546: }
547: $output=~
548: s/\<((?:input|select)[^\>]+\Qjavascript:setSubmittedPart\E)\(\s*[\'\"]([^\'\"]+)[\'\"]*\s*\)/\<$1('$2','$prefix')/gsi;
549: $output=~
550: s/\<(input[^\>]+\Qonfocus=\"javascript:disableAutoComplete\E)\(\'([^\']+)\'\)(;\")/\<$1('$idprefix$2')$3/gsi;
551: unless ($hastimer) {
552: if ($plainsrc =~ /$LONCAPA::assess_re/) {
553: %Apache::lonhomework::history =
554: &Apache::lonnet::restore($symb,$courseid,$domain,$name);
555: my $type = 'problem';
556: if ($extension eq 'task') {
557: $type = 'Task';
558: }
559: my ($status,$accessmsg,$slot_name,$slot) =
560: &Apache::lonhomework::check_slot_access('0',$type,$symb);
561: undef(%Apache::lonhomework::history);
562: my $probstatus = &Apache::lonnet::EXT("resource.0.problemstatus",$symb);
563: if (($status eq 'CAN_ANSWER') || (($status eq 'CANNOT_ANSWER') &&
564: (($probstatus eq 'no') || ($probstatus eq 'no_feedback_ever'))) ||
565: (($status eq 'NOT_YET_VIEWED') && ($posthash{'markaccess'} eq 'yes'))) {
566: my ($slothastime,$timerhastime);
567: if ($slot_name ne '') {
568: if (ref($slot) eq 'HASH') {
569: if (($slot->{'starttime'} < $now) &&
570: ($slot->{'endtime'} > $now)) {
571: $slothastime = $now - $slot->{'endtime'};
572: }
573: }
574: }
575: my $duedate = &Apache::lonnet::EXT("resource.0.duedate",$symb);
576: my @interval=&Apache::lonnet::EXT("resource.0.interval",$symb);
577: if (@interval > 1) {
578: my $first_access;
579: if ($interval[1] eq 'map') {
580: my $ignorecache;
581: if ($env{'form.'.$prefix.'markaccess'} eq 'yes') {
582: $ignorecache = 1;
583: }
584: $first_access=&Apache::lonnet::get_first_access($interval[1],undef,$pagesymb,$ignorecache);
585: if (($first_access) && (!$pagefirstaccess)) {
586: $pagefirstaccess = $first_access;
587: }
588: } else {
589: $first_access=&Apache::lonnet::get_first_access($interval[1],$symb);
590: }
591: if ($first_access > 0) {
592: my ($timelimit) = ($interval[0] =~ /^(\d+)/);
593: if ($timelimit) {
594: my $timeremains = $timelimit + $first_access - $now;
595: if ($timeremains > 0) {
596: $timerhastime = $timeremains;
597: }
598: }
599: }
600: }
601: if (($duedate && $duedate > $now) ||
602: (!$duedate && $timerhastime > 0) ||
603: ($slot_name ne '' && $slothastime)) {
604: if ((@interval > 1 && $timerhastime) ||
605: ($type eq 'Task' && $slothastime)) {
606: $countdowndisp{$symb} = 'inline';
607: if ((@interval > 1) && ($timerhastime)) {
608: $hastimeleft{$symb} = $timerhastime;
609: if ($pagefirstaccess) {
610: my ($timelimit,$usesdone,$donebuttontext,$proctor,$secret);
611: ($timelimit,my $donesuffix) = split(/_/,$interval[0],2);
612: if ($donesuffix =~ /^done\:([^\:]+)\:(.*)$/) {
613: $usesdone = 'done';
614: $donebuttontext = $1;
615: (undef,$proctor,$secret) = split(/_/,$2);
616: } elsif ($donesuffix =~ /^done(|_.+)$/) {
617: $donebuttontext = &mt('Done');
618: ($usesdone,$proctor,$secret) = split(/_/,$donesuffix);
619: }
620: if ($usesdone eq 'done') {
621: $donebutton{$symb} = $timelimit;
622: push(@{$buttonbytime{$timelimit}},$symb);
623: $donebtnextra{$symb} = {
624: text => $donebuttontext,
625: proctor => $proctor,
626: secret => $secret,
627: type => $interval[1],
628: };
629: }
630: }
631: } else {
632: $hastimeleft{$symb} = $slothastime;
633: }
634: } else {
635: $hastimeleft{$symb} = $duedate - $now;
636: $countdowndisp{$symb} = 'none';
637: }
638: unless ($donebutton{$symb}) {
639: $donebutton{$symb} = 0;
640: }
641: }
642: }
643: }
644: }
645: }
646: $thisdir=~s/\/[^\/]*$//;
647: foreach (@rlinks) {
648: unless (($_=~/^https?\:\/\//i) ||
649: ($_=~/^\//) ||
650: ($_=~/^javascript:/i) ||
651: ($_=~/^mailto:/i) ||
652: ($_=~/^\#/)) {
653: my $newlocation=
654: &Apache::lonnet::hreflocation($thisdir,$_);
655: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
656: }
657: }
658: foreach my $css_href (@css_hrefs) {
659: next if ($css_href eq '');
660: unless ($css_href =~ m{https?://}) {
661: my $proburl = &Apache::lonnet::clutter($plainsrc);
662: unless ($css_href =~ m{^/}) {
663: my $probdir = $proburl;
664: $probdir=~s/\/[^\/]*$//;
665: $css_href = &Apache::lonnet::hreflocation($probdir,$css_href);
666: }
667: if ($css_href =~ m{^/(res|uploaded)/}) {
668: unless (($env{'httpref.'.$css_href}) ||
669: ($httpref{'httpref.'.$css_href}) ||
670: (&Apache::lonnet::is_on_map($css_href))) {
671: if ($env{'httpref.'.$proburl}) {
672: $proburl = $env{'httpref.'.$proburl};
673: }
674: $httpref{'httpref.'.$css_href} = $proburl;
675: }
676: }
677: }
678: $cssrefs{$css_href} = 1;
679: }
680: # -------------------------------------------------- Deal with Applet codebases
681: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
682: $ssibody{$_}=$output;
683: # ---------------------------------------------------------------- End SSI cell
684: }
685: }
686: }
687: }
688: unless ($contents) {
689: &Apache::loncommon::content_type($r,'text/html');
690: $r->send_http_header;
691: $r->print(&Apache::loncommon::start_page(undef,undef,
692: {'force_register' => 1,}));
693: $r->print(&mt('This page is either empty or it only contains resources that are currently hidden').'. ');
694: $r->print('<br /><br />'.&mt('Please use the LON-CAPA navigation arrows to move to another item in the course').
695: &Apache::loncommon::end_page());
696: } else {
697: # ------------------------------------------------------------------ Build page
698:
699: # ---------------------------------------------------------------- Send headers
700: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
701: if ($isxml) {
702: &Apache::loncommon::content_type($r,'text/xml');
703: } else {
704: &Apache::loncommon::content_type($r,'text/html');
705: }
706: $r->send_http_header;
707: # ------------------------------------------------------------------------ Head
708: if ($allscript) {
709: $allscript =
710: "\n".'<script type="text/javascript">'."\n".
711: $allscript.
712: "\n</script>\n";
713: }
714: if (($nforms) && ($nuploads)) {
715: $allscript .= &Apache::lonhtmlcommon::file_submissionchk_js(\%turninpaths,\%multiresps).
716: '<script type="text/javascript" '.
717: 'src="/res/adm/includes/file_upload.js"></script>';
718: }
719: if (($nforms) && (&Apache::lonhtmlcommon::htmlareabrowser())) {
720: my %textarea_args = (
721: dragmath => 'math',
722: );
723: $allscript .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
724: }
725: if ($ntimers) {
726: $allscript .= '<script type="text/javascript">'."\n".
727: '// <![CDATA['."\n".
728: 'function pageTimer(form,prefix) {'."\n".
729: " form.elements[prefix+'markaccess'].value = 'yes';\n".
730: " form.submit();\n".
731: '}'."\n".
732: '// ]]>'.
733: "\n</script>\n";
734: }
735: &Apache::lonhtmlcommon::clear_breadcrumb_tools();
736: if (keys(%hastimeleft)) {
737: my (%uniquetimes,%uniquedisplays);
738: foreach my $item (values(%hastimeleft)) {
739: if (exists($uniquetimes{$item})) {
740: $uniquetimes{$item} ++;
741: } else {
742: $uniquetimes{$item} = 1;
743: }
744: }
745: if (scalar(keys(%uniquetimes)) == 1) {
746: my (%uniquedisplays,%uniquedones,$currdisp,$donebuttontime,
747: $donebuttonextras);
748: if (keys(%countdowndisp)) {
749: foreach my $item (values(%countdowndisp)) {
750: if (exists($uniquedisplays{$item})) {
751: $uniquedisplays{$item} ++;
752: } else {
753: $uniquedisplays{$item} = 1;
754: }
755: }
756: my @countdowndisplay = keys(%uniquedisplays);
757: if (scalar(@countdowndisplay) == 1) {
758: $currdisp = $countdowndisplay[0];
759: }
760: }
761: if (keys(%donebutton)) {
762: foreach my $item (values(%donebutton)) {
763: if (exists($uniquedones{$item})) {
764: $uniquedones{$item} ++;
765: } else {
766: $uniquedones{$item} = 1;
767: }
768: }
769: my @donebuttons = sort { $ <=> $b } (keys(%uniquedones));
770: if (scalar(@donebuttons) == 1) {
771: if ($donebuttons[0]) {
772: $donebuttontime = $donebuttons[0];
773: if (ref($buttonbytime{$donebuttontime}) eq 'ARRAY') {
774: $donebuttonextras = $donebtnextra{$buttonbytime{$donebuttontime}->[0]};
775: }
776: }
777: }
778: }
779: &add_countdown_timer($currdisp,$donebuttontime,$donebuttonextras);
780: }
781: }
782: my $pagebuttonshide;
783: if (keys(%buttonshide)) {
784: my %uniquebuttonhide;
785: foreach my $item (values(%buttonshide)) {
786: if (exists($uniquebuttonhide{$item})) {
787: $uniquebuttonhide{$item} ++;
788: } else {
789: $uniquebuttonhide{$item} = 1;
790: }
791: }
792: if (keys(%uniquebuttonhide) == 1) {
793: if (lc((keys(%uniquebuttonhide))[0]) eq 'yes') {
794: $pagebuttonshide = 'yes';
795: }
796: }
797: }
798: if (keys(%cssrefs)) {
799: my $links;
800: if (keys(%cssrefs)) {
801: foreach my $css_href (keys(%cssrefs)) {
802: next unless ($css_href =~ m{^(/res/|/uploaded/|https?://)});
803: $links .= '<link rel="stylesheet" type="text/css" href="'.$css_href.'" />'."\n";
804: }
805: }
806: if ($links) {
807: if (keys(%httpref)) {
808: &Apache::lonnet::appenv(\%httpref);
809: }
810: $allscript .= "\n$links";
811: }
812: }
813: # ------------------------------------------------------------------ Start body
814: $r->print(&Apache::loncommon::start_page(undef,$allscript,
815: {'force_register' => 1,
816: 'bgcolor' => '#ffffff',
817: 'hide_buttons' => $pagebuttonshide}));
818: # ------------------------------------------------------------------ Start form
819: if ($nforms) {
820: my $fmtag = '<form name="lonhomework" method="post" enctype="multipart/form-data"';
821: if ($nuploads) {
822: my $multi;
823: if ($nuploads > 1) {
824: $multi = 1;
825: }
826: $fmtag .= 'onsubmit="return file_submission_check(this,'."'$turninparent','$multi'".');"';
827: }
828: $fmtag .= ' action="'.
829: &Apache::lonenc::check_encrypt($requrl)
830: .'" id="LC_page">';
831: $r->print($fmtag);
832: }
833: } elsif (($target eq 'tex') || ($target eq 'tex_answer')) {
834: # I think this is not needed as the header
835: # will be put in for each of the page parts
836: # by the londefdef.pm now that we are opening up
837: # the parts of a page.
838: #$r->print('\documentclass{article}
839: # \newcommand{\keephidden}[1]{}
840: # \usepackage[dvips]{graphicx}
841: # \usepackage{epsfig}
842: # \usepackage{calc}
843: # \usepackage{longtable}
844: # \begin{document}');
845: }
846: # ----------------------------------------------------------------- Start table
847: if (($target eq 'tex') || ($target eq 'tex_answer')) {
848: # # $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead ');
849: if ($number_of_columns le $lcm) {$number_of_columns=$lcm;};
850: } else {
851: $r->print('<table width="100%" cols="'.$lcm.'" border="0">');
852: }
853: # generate rows
854: for ($i=0;$i<=$#rows;$i++) {
855: if ($rows[$i]) {
856: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
857: $r->print("\n<tr>");
858: }
859: my @colcont=split(/\&/,$rows[$i]);
860: my $avespan=$lcm/($#colcont+1);
861: for ($j=0;$j<=$#colcont;$j++) {
862: my $rid=$colcont[$j];
863: my $metainfo =&get_buttons(\%hash,$rid,\%buttonshide,$hostname).'<br />';
864: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
865: $r->print('<td colspan="'.$avespan.'"');
866: }
867: if (($cellemb{$rid} eq 'ssi') || ($cellexternal{$rid})) {
868: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
869: if ($ssibgcolor{$rid}) {
870: $r->print(' bgcolor="'.
871: $ssibgcolor{$rid}.'"');
872: }
873: $r->print('>'.$metainfo.'<font');
874:
875: if ($ssitext{$rid}) {
876: $r->print(' text="'.$ssitext{$rid}.'"');
877: }
878: if ($ssilink{$rid}) {
879: $r->print(' link="'.$ssilink{$rid}.'"');
880: }
881: if ($ssitext{$rid}) {
882: $r->print(' vlink="'.$ssivlink{$rid}.'"');
883: }
884: if ($ssialink{$rid}) {
885: $r->print(' alink="'.$ssialink{$rid}.'"');
886: }
887: $r->print('>');
888: }
889: $r->print($ssibody{$rid});
890: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
891: $r->print('</font>');
892: }
893: if ($env{'course.'.
894: $env{'request.course.id'}.
895: '.pageseparators'} eq 'yes') {
896: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
897: $r->print('<hr />');
898: }
899: }
900: } elsif ($cellemb{$rid} eq 'img') {
901: $r->print('>'.$metainfo.'<img src="'.
902: $hash{'src_'.$rid}.'" />');
903: } elsif ($cellemb{$rid} eq 'emb') {
904: $r->print('>'.$metainfo.'<embed src="'.
905: $hash{'src_'.$rid}.'"></embed>');
906: } elsif (&Apache::lonnet::declutter($hash{'src_'.$rid}) !~/\.(sequence|page)$/) {
907: $r->print($metainfo.'<b>'.$hash{'title_'.$rid}.'</b><br />');
908: unless ($cellemb{$rid} eq 'wrp') {
909: $r->print(&mt('It is recommended that you use an up-to-date virus scanner before handling this file.'));
910: }
911: $r->print('</p><p><table>'.
912: &Apache::londocs::entryline(0,
913: &mt("Click to download or use your browser's Save Link function"),
914: '/'.&Apache::lonnet::declutter($hash{'src_'.$rid})).
915: '</table></p><br />');
916: }
917: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
918: $r->print('</td>');
919: } else {
920: # for (my $incol=1;$incol<=$avespan;$incol++) {
921: # $r->print(' & ');
922: # }
923: }
924: }
925: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
926: $r->print('</tr>');
927: } else {
928: # $r->print('REMOVETHEHEADOFLONGTABLE\\\\');
929: }
930: }
931: }
932: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
933: $r->print("\n</table>");
934: } else {
935: # $r->print('\end{longtable}\strut');
936: }
937: # ---------------------------------------------------------------- Submit, etc.
938: if ($nforms) {
939: my $class;
940: if ($nforms > 1) {
941: $class = ' class="LC_hwk_submit"';
942: if ($ntimers) {
943: $nforms = 1;
944: $class = '';
945: }
946: }
947: $r->print(
948: '<input name="all_submit" value="'.&mt('Submit All').'" type="'.
949: (($nforms>1)?'submit':'hidden').'"'.$class.' id="all_submit" />'.
950: '<input type="hidden" name="all_submit_pressed" '.
951: 'id="all_submit_pressed" value="" />'.
952: '<div id="msg_all_submit" style="display:none">'.
953: &mt('Processing your submission ...').'</div></form>');
954: }
955: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
956: $r->print(&Apache::loncommon::end_page({'discussion'
957: => 1,}));
958: } else {
959: $r->print('\end{document}'.$number_of_columns);
960: }
961: &Apache::lonnet::symblist($requrl,%symbhash);
962: my ($map,$id,$url)=&Apache::lonnet::decode_symb(&Apache::lonnet::symbread());
963: &Apache::lonnet::symblist($map,'last_known'=>[$url,$id]);
964: # -------------------------------------------------------------------- End page
965: }
966: # ------------------------------------------------------------- End render page
967: } else {
968: &Apache::loncommon::content_type($r,'text/html');
969: $r->send_http_header;
970: &Apache::lonsequence::viewmap($r,$requrl);
971: }
972: # ------------------------------------------------------------------ Untie hash
973: unless (untie(%hash)) {
974: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
975: "Could not untie coursemap $fn (browse).</font>");
976: }
977: # -------------------------------------------------------------------- All done
978: return OK;
979: # ----------------------------------------------- Errors, hash could no be tied
980: }
981: }
982: }
983: &Apache::loncommon::content_type($r,'text/html');
984: $r->send_http_header;
985: &Apache::lonsequence::viewmap($r,$requrl);
986: return OK;
987: }
988:
989: sub get_buttons {
990: my ($hash,$rid,$buttonshide,$hostname) = @_;
991:
992: my ($mapid,$resid)=split(/\./,$rid);
993: my $symb=&Apache::lonnet::encode_symb($hash->{'map_id_'.$mapid},
994: $resid,
995: $hash->{'src_'.$rid});
996: my ($aname,$shownsymb);
997: if (($hash->{'encrypted_'.$rid}) && (!$env{'request.role.adv'})) {
998: $aname = 'LC_'.$rid;
999: $shownsymb = &Apache::lonenc::encrypted($symb);
1000: } else {
1001: $shownsymb = $symb;
1002: my $dispsymb = $symb;
1003: if ($symb =~ /\#([^\#]+)$/) {
1004: my $escan = &escape('#');
1005: $dispsymb =~ s/#([^\#]+)$/$escan$1/;
1006: }
1007: $aname = &escape($dispsymb);
1008: }
1009: my $metainfo = '<a name="'.$aname.'"></a>';
1010: unless ($env{'request.role.adv'}) {
1011: if ($buttonshide->{$symb} eq 'yes') {
1012: return $metainfo;
1013: }
1014: }
1015: my $crs_sec = $env{'request.course.id'} . (($env{'request.course.sec'} ne '')
1016: ? "/$env{'request.course.sec'}"
1017: : '');
1018: my $esrc=&Apache::lonnet::declutter($hash->{'src_'.$rid});
1019: if ($hash->{'encrypted_'.$rid}) {
1020: $esrc=&Apache::lonenc::encrypted($esrc);
1021: }
1022: if ($hash->{'src_'.$rid} !~ m-^/uploaded/-
1023: && $hash->{'src_'.$rid} !~ m{^/ext/}
1024: && !$env{'request.enc'}
1025: && ($env{'request.role.adv'}
1026: || !$hash->{'encrypted_'.$rid})) {
1027: $metainfo .= '<a href="'.$hash->{'src_'.$rid}.'.meta'.'" '.
1028: 'target="LONcatInfo">'.
1029: '<img src="/res/adm/pages/catalog.png" class="LC_icon"'.
1030: ' alt="'.&mt('Show Metadata').'"'.
1031: ' title="'.&mt('Show Metadata').'" />'.
1032: '</a>';
1033: }
1034: if (($hash->{'src_'.$rid} !~ m{^/uploaded/}) &&
1035: ($hash->{'src_'.$rid} !~ m{^/ext/})) {
1036: $metainfo .= '<a href="/adm/evaluate?postdata='.
1037: &escape($esrc).
1038: '" target="LONcatInfo">'.
1039: '<img src="/res/adm/pages/eval.png" class="LC_icon"'.
1040: ' alt="'.&mt('Provide my evaluation of this resource').'"'.
1041: ' title="'.&mt('Provide my evaluation of this resource').'" />'.
1042: '</a>';
1043: }
1044: if (($hash->{'src_'.$rid}=~/$LONCAPA::assess_re/) &&
1045: ($hash->{'src_'.$rid} !~ m-^/uploaded/-)) {
1046:
1047: if ((&Apache::lonnet::allowed('mgr',$crs_sec)) ||
1048: (&Apache::lonnet::allowed('vgr',$crs_sec))) {
1049: $metainfo.=
1050: '<a href="/adm/grades?symb='.&escape($symb).
1051: # '&command=submission" target="LONcatInfo">'.
1052: '&command=submission">'.
1053: '<img src="/adm/lonMisc/subm_button.png" class="LC_icon"'.
1054: ' alt="'.&mt('View Submissions for a Student or a Group of Students').'"'.
1055: ' title="'.&mt('View Submissions for a Student or a Group of Students').'" />'.
1056: '</a>';
1057: }
1058: if (&Apache::lonnet::allowed('mgr',$crs_sec)) {
1059: $metainfo.=
1060: '<a href="/adm/grades?symb='.&escape($symb).
1061: # '&command=gradingmenu" target="LONcatInfo">'.
1062: '&command=gradingmenu">'.
1063: '<img src="/res/adm/pages/pgrd.png" class="LC_icon"'.
1064: ' alt="'.&mt('Content Grades').'"'.
1065: ' title="'.&mt('Content Grades').'" />'.
1066: '</a>';
1067: }
1068: if ((&Apache::lonnet::allowed('opa',$crs_sec)) ||
1069: (&Apache::lonnet::allowed('vpa',$crs_sec))) {
1070: $metainfo.=
1071: '<a href="/adm/parmset?symb='.&escape($symb).
1072: # '" target="LONcatInfo">'.
1073: '" >'.
1074: '<img src="/adm/lonMisc/pprm_button.png" class="LC_icon"'.
1075: ' alt="'.&mt('Content Settings').'"'.
1076: ' title="'.&mt('Content Settings').'" />'.
1077: '</a>';
1078: }
1079: }
1080: if ($env{'request.course.id'}) {
1081: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1082: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1083: my $file=&Apache::lonnet::declutter($hash->{'src_'.$rid});
1084: my $editbutton = '';
1085: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1086: my ($cfile,$home,$switchserver,$forceedit,$forceview) =
1087: &Apache::lonnet::can_edit_resource($file,$cnum,$cdom,$hash->{'src_'.$rid},$symb);
1088: if ($cfile ne '') {
1089: my $jscall = &Apache::lonhtmlcommon::jump_to_editres($cfile,$home,$switchserver,
1090: $forceedit,1,$symb,$shownsymb,
1091: undef,&escape($env{'form.title'}),
1092: $hostname);
1093: if ($jscall) {
1094: $editbutton = 1;
1095: my $icon = 'pcstr.png';
1096: my $label = &mt('Edit');
1097: my $title = &mt('Edit this resource');
1098: my $pic = '<img src="'.&Apache::loncommon::lonhttpdurl('/res/adm/pages/'.$icon).'"'.
1099: ' class="LC_icon" alt="'.$label.'" title="'.$title.'" />';
1100: $metainfo .= ' <a href="javascript:'.$jscall.';">'.$pic.'</a>';
1101: }
1102: }
1103: }
1104: if ((!$editbutton) && ($file=~/$LONCAPA::assess_re/)) {
1105: my $url = &Apache::lonnet::clutter($file);
1106: my $viewsrcbutton;
1107: if ((&Apache::lonnet::allowed('cre','/')) &&
1108: (&Apache::lonnet::metadata($url,'sourceavail') eq 'open')) {
1109: $viewsrcbutton = 1;
1110: } elsif (&Apache::lonnet::allowed('vxc',$crs_sec)) {
1111: if ($url =~ m{^\Q/res/$cdom/\E($LONCAPA::match_username)/}) {
1112: my $auname = $1;
1113: if (($env{'request.course.adhocsrcaccess'} ne '') &&
1114: (grep(/^\Q$auname\E$/,split(/,/,$env{'request.course.adhocsrcaccess'})))) {
1115: $viewsrcbutton = 1;
1116: } elsif ((&Apache::lonnet::metadata($url,'sourceavail') eq 'open') &&
1117: (&Apache::lonnet::allowed('bre',$crs_sec))) {
1118: $viewsrcbutton = 1;
1119: }
1120: }
1121: }
1122: if ($viewsrcbutton) {
1123: my $icon = 'pcstr.png';
1124: my $label = &mt('View Source');
1125: my $title = &mt('View source code');
1126: my $jsrid = $rid;
1127: $jsrid =~ s/\./_/g;
1128: my $showurl = &escape(&Apache::lonenc::check_encrypt($url));
1129: my $pic = '<img src="'.&Apache::loncommon::lonhttpdurl('/res/adm/pages/'.$icon).'"'.
1130: ' class="LC_icon" alt="'.$label.'" title="'.$title.'" />';
1131: $metainfo .= ' <a href="javascript:open_source_'.$jsrid.'();">'.$pic.'</a>'."\n".
1132: '<script type="text/javascript">'."\n".
1133: "function open_source_$jsrid() {\n".
1134: " sourcewin=window.open('/adm/source?inhibitmenu=yes&viewonly=1&filename=$showurl','LONsource',".
1135: "'height=500,width=600,resizable=yes,location=no,menubar=no,toolbar=no,scrollbars=yes');\n".
1136: "}\n".
1137: "</script>\n";
1138: }
1139: }
1140: }
1141: return $metainfo;
1142: }
1143:
1144: sub add_countdown_timer {
1145: my ($currdisp,$donebuttontime,$donebuttonextras) = @_;
1146: my ($collapse,$expand,$alttxt,$title,$donebutton);
1147: if ($currdisp eq 'inline') {
1148: $collapse = '► ';
1149: } else {
1150: $expand = '◄ ';
1151: }
1152: if ($donebuttontime) {
1153: my ($type,$proctor,$donebuttontext);
1154: if (ref($donebuttonextras) eq 'HASH') {
1155: $proctor = $donebuttonextras->{'proctor'};
1156: $donebuttontext = $donebuttonextras->{'text'};
1157: $type = $donebuttonextras->{'type'};
1158: } else {
1159: $donebuttontext = &mt('Done');
1160: $type = 'map';
1161: }
1162: $donebutton =
1163: &Apache::lonmenu::done_button_js($type,'','',$proctor,$donebuttontext);
1164: }
1165: unless ($env{'environment.icons'} eq 'iconsonly') {
1166: $alttxt = &mt('Timer');
1167: $title = $alttxt.' ';
1168: }
1169: my $desc = &mt('Countdown to due date/time');
1170: my $output = <<END;
1171: $donebutton
1172: <a href="javascript:toggleCountdown();" class="LC_menubuttons_link">
1173: <span id="ddcountcollapse" class="LC_menubuttons_inline_text">
1174: $collapse
1175: </span></a>
1176: <span id="duedatecountdown" class="LC_menubuttons_inline_text" style="display: $currdisp;"></span>
1177: <a href="javascript:toggleCountdown();" class="LC_menubuttons_link">
1178: <span id="ddcountexpand" class="LC_menubuttons_inline_text" >$expand</span>
1179: <img src="/res/adm/pages/timer.png" title="$desc" class="LC_icon" alt="$alttxt" /><span class="LC_menubuttons_inline_text">$title</span></a>
1180: END
1181: &Apache::lonhtmlcommon::add_breadcrumb_tool('tools',$output);
1182: return;
1183: }
1184:
1185: sub create_extlink {
1186: my ($url,$anchor,$title,$linktext) = @_;
1187: my $shownlink;
1188: unless ($title eq '') {
1189: $shownlink = '<span style="font-weight:bold;">'.$title.'</span><br />';
1190: }
1191: my $dest = &HTML::Entities::encode($url.$anchor,'&<>"');
1192: $shownlink .= '<a href="'.$dest.'">'.$linktext.'</a>';
1193: return $shownlink;
1194: }
1195:
1196: 1;
1197: __END__
1198:
1199:
1200: =head1 NAME
1201:
1202: Apache::lonpage - Page Handler
1203:
1204: =head1 SYNOPSIS
1205:
1206: Invoked by /etc/httpd/conf/srm.conf:
1207:
1208: <LocationMatch "^/res/.*\.page$>
1209: SetHandler perl-script
1210: PerlHandler Apache::lonpage
1211: </LocationMatch>
1212:
1213: =head1 INTRODUCTION
1214:
1215: This module renders a .page resource.
1216:
1217: This is part of the LearningOnline Network with CAPA project
1218: described at http://www.lon-capa.org.
1219:
1220: =head1 HANDLER SUBROUTINE
1221:
1222: This routine is called by Apache and mod_perl.
1223:
1224: =over 4
1225:
1226: =item *
1227:
1228: set document type for header only
1229:
1230: =item *
1231:
1232: tie db file
1233:
1234: =item *
1235:
1236: render page
1237:
1238: =item *
1239:
1240: add to symb list
1241:
1242: =item *
1243:
1244: page parms
1245:
1246: =item *
1247:
1248: Get SSI output, post parameters
1249:
1250: =item *
1251:
1252: SSI cell rendering
1253:
1254: =item *
1255:
1256: Deal with Applet codebases
1257:
1258: =item *
1259:
1260: Build page
1261:
1262: =item *
1263:
1264: send headers
1265:
1266: =item *
1267:
1268: start body
1269:
1270: =item *
1271:
1272: start form
1273:
1274: =item *
1275:
1276: start table
1277:
1278: =item *
1279:
1280: submit element, etc, render page, untie hash
1281:
1282: =back
1283:
1284: =head1 OTHER SUBROUTINES
1285:
1286: =over 4
1287:
1288: =item *
1289:
1290: euclid() : Euclid's method for determining the greatest common denominator.
1291:
1292: =item *
1293:
1294: tracetable() : Build page table.
1295:
1296: =back
1297:
1298: =cut
1299:
1300:
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