1: # The LearningOnline Network with CAPA
2: # Page Handler
3: #
4: # $Id: lonpage.pm,v 1.142 2022/10/04 20:39:57 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,$id]);
964: # -------------------------------------------------------------------- End page
965: }
966: # ------------------------------------------------------------- End render page
967: } else {
968: if ($hash{'map_type_'.$hash{'map_pc_'.$requrl}} eq 'none') {
969: &Apache::loncommon::content_type($r,'text/html');
970: $r->send_http_header;
971: $r->print(&Apache::loncommon::start_page(undef,undef,
972: {'force_register' => 1,}));
973: my $crstype = &Apache::loncommon::course_type();
974: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
975: $r->print('<span class="LC_warning">'.&mt('Missing composite page file.').'</span><br />'.
976: &mt("You may want to use the $crstype Editor to remove this item."));
977: } else {
978: if ($crstype eq 'Placement') {
979: $r->print('<span class="LC_warning">'.&mt('Missing page').'</span>');
980: } else {
981: $r->print('<span class="LC_info">'.
982: &mt('This resource was unavailable when your '.lc($crstype).' session was loaded').'<br />'.
983: &mt("Please use 'Contents' to list items available in the $crstype.").'</span>');
984: }
985: }
986: $r->print(&Apache::loncommon::end_page());
987: } else {
988: &Apache::loncommon::content_type($r,'text/html');
989: $r->send_http_header;
990: &Apache::lonsequence::viewmap($r,$requrl);
991: }
992: }
993: # ------------------------------------------------------------------ Untie hash
994: unless (untie(%hash)) {
995: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
996: "Could not untie coursemap $fn (browse).</font>");
997: }
998: # -------------------------------------------------------------------- All done
999: return OK;
1000: # ----------------------------------------------- Errors, hash could no be tied
1001: }
1002: }
1003: }
1004: &Apache::loncommon::content_type($r,'text/html');
1005: $r->send_http_header;
1006: &Apache::lonsequence::viewmap($r,$requrl);
1007: return OK;
1008: }
1009:
1010: sub get_buttons {
1011: my ($hash,$rid,$buttonshide,$hostname) = @_;
1012:
1013: my ($mapid,$resid)=split(/\./,$rid);
1014: my $symb=&Apache::lonnet::encode_symb($hash->{'map_id_'.$mapid},
1015: $resid,
1016: $hash->{'src_'.$rid});
1017: my ($aname,$shownsymb);
1018: if (($hash->{'encrypted_'.$rid}) && (!$env{'request.role.adv'})) {
1019: $aname = 'LC_'.$rid;
1020: $shownsymb = &Apache::lonenc::encrypted($symb);
1021: } else {
1022: $shownsymb = $symb;
1023: my $dispsymb = $symb;
1024: if ($symb =~ /\#([^\#]+)$/) {
1025: my $escan = &escape('#');
1026: $dispsymb =~ s/#([^\#]+)$/$escan$1/;
1027: }
1028: $aname = &escape($dispsymb);
1029: }
1030: my $metainfo = '<a name="'.$aname.'"></a>';
1031: unless ($env{'request.role.adv'}) {
1032: if ($buttonshide->{$symb} eq 'yes') {
1033: return $metainfo;
1034: }
1035: }
1036: my $crs_sec = $env{'request.course.id'} . (($env{'request.course.sec'} ne '')
1037: ? "/$env{'request.course.sec'}"
1038: : '');
1039: my $esrc=&Apache::lonnet::declutter($hash->{'src_'.$rid});
1040: if ($hash->{'encrypted_'.$rid}) {
1041: $esrc=&Apache::lonenc::encrypted($esrc);
1042: }
1043: if ($hash->{'src_'.$rid} !~ m-^/uploaded/-
1044: && $hash->{'src_'.$rid} !~ m{^/ext/}
1045: && !$env{'request.enc'}
1046: && ($env{'request.role.adv'}
1047: || !$hash->{'encrypted_'.$rid})) {
1048: $metainfo .= '<a href="'.$hash->{'src_'.$rid}.'.meta'.'" '.
1049: 'target="LONcatInfo">'.
1050: '<img src="/res/adm/pages/catalog.png" class="LC_icon"'.
1051: ' alt="'.&mt('Show Metadata').'"'.
1052: ' title="'.&mt('Show Metadata').'" />'.
1053: '</a>';
1054: }
1055: if (($hash->{'src_'.$rid} !~ m{^/uploaded/}) &&
1056: ($hash->{'src_'.$rid} !~ m{^/ext/})) {
1057: $metainfo .= '<a href="/adm/evaluate?postdata='.
1058: &escape($esrc).
1059: '" target="LONcatInfo">'.
1060: '<img src="/res/adm/pages/eval.png" class="LC_icon"'.
1061: ' alt="'.&mt('Provide my evaluation of this resource').'"'.
1062: ' title="'.&mt('Provide my evaluation of this resource').'" />'.
1063: '</a>';
1064: }
1065: if (($hash->{'src_'.$rid}=~/$LONCAPA::assess_re/) &&
1066: ($hash->{'src_'.$rid} !~ m-^/uploaded/-)) {
1067:
1068: if ((&Apache::lonnet::allowed('mgr',$crs_sec)) ||
1069: (&Apache::lonnet::allowed('vgr',$crs_sec))) {
1070: $metainfo.=
1071: '<a href="/adm/grades?symb='.&escape($symb).
1072: # '&command=submission" target="LONcatInfo">'.
1073: '&command=submission">'.
1074: '<img src="/adm/lonMisc/subm_button.png" class="LC_icon"'.
1075: ' alt="'.&mt('View Submissions for a Student or a Group of Students').'"'.
1076: ' title="'.&mt('View Submissions for a Student or a Group of Students').'" />'.
1077: '</a>';
1078: }
1079: if (&Apache::lonnet::allowed('mgr',$crs_sec)) {
1080: $metainfo.=
1081: '<a href="/adm/grades?symb='.&escape($symb).
1082: # '&command=gradingmenu" target="LONcatInfo">'.
1083: '&command=gradingmenu">'.
1084: '<img src="/res/adm/pages/pgrd.png" class="LC_icon"'.
1085: ' alt="'.&mt('Content Grades').'"'.
1086: ' title="'.&mt('Content Grades').'" />'.
1087: '</a>';
1088: }
1089: if ((&Apache::lonnet::allowed('opa',$crs_sec)) ||
1090: (&Apache::lonnet::allowed('vpa',$crs_sec))) {
1091: $metainfo.=
1092: '<a href="/adm/parmset?symb='.&escape($symb).
1093: # '" target="LONcatInfo">'.
1094: '" >'.
1095: '<img src="/adm/lonMisc/pprm_button.png" class="LC_icon"'.
1096: ' alt="'.&mt('Content Settings').'"'.
1097: ' title="'.&mt('Content Settings').'" />'.
1098: '</a>';
1099: }
1100: }
1101: if ($env{'request.course.id'}) {
1102: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
1103: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
1104: my $file=&Apache::lonnet::declutter($hash->{'src_'.$rid});
1105: my $editbutton = '';
1106: if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
1107: my ($cfile,$home,$switchserver,$forceedit,$forceview) =
1108: &Apache::lonnet::can_edit_resource($file,$cnum,$cdom,$hash->{'src_'.$rid},$symb);
1109: if ($cfile ne '') {
1110: my $jscall = &Apache::lonhtmlcommon::jump_to_editres($cfile,$home,$switchserver,
1111: $forceedit,1,$symb,$shownsymb,
1112: undef,&escape($env{'form.title'}),
1113: $hostname);
1114: if ($jscall) {
1115: $editbutton = 1;
1116: my $icon = 'pcstr.png';
1117: my $label = &mt('Edit');
1118: my $title = &mt('Edit this resource');
1119: my $pic = '<img src="'.&Apache::loncommon::lonhttpdurl('/res/adm/pages/'.$icon).'"'.
1120: ' class="LC_icon" alt="'.$label.'" title="'.$title.'" />';
1121: $metainfo .= ' <a href="javascript:'.$jscall.';">'.$pic.'</a>';
1122: }
1123: }
1124: }
1125: if ((!$editbutton) && ($file=~/$LONCAPA::assess_re/)) {
1126: my $url = &Apache::lonnet::clutter($file);
1127: my $viewsrcbutton;
1128: if ((&Apache::lonnet::allowed('cre','/')) &&
1129: (&Apache::lonnet::metadata($url,'sourceavail') eq 'open')) {
1130: $viewsrcbutton = 1;
1131: } elsif (&Apache::lonnet::allowed('vxc',$crs_sec)) {
1132: if ($url =~ m{^\Q/res/$cdom/\E($LONCAPA::match_username)/}) {
1133: my $auname = $1;
1134: if (($env{'request.course.adhocsrcaccess'} ne '') &&
1135: (grep(/^\Q$auname\E$/,split(/,/,$env{'request.course.adhocsrcaccess'})))) {
1136: $viewsrcbutton = 1;
1137: } elsif ((&Apache::lonnet::metadata($url,'sourceavail') eq 'open') &&
1138: (&Apache::lonnet::allowed('bre',$crs_sec))) {
1139: $viewsrcbutton = 1;
1140: }
1141: }
1142: }
1143: if ($viewsrcbutton) {
1144: my $icon = 'pcstr.png';
1145: my $label = &mt('View Source');
1146: my $title = &mt('View source code');
1147: my $jsrid = $rid;
1148: $jsrid =~ s/\./_/g;
1149: my $showurl = &escape(&Apache::lonenc::check_encrypt($url));
1150: my $pic = '<img src="'.&Apache::loncommon::lonhttpdurl('/res/adm/pages/'.$icon).'"'.
1151: ' class="LC_icon" alt="'.$label.'" title="'.$title.'" />';
1152: $metainfo .= ' <a href="javascript:open_source_'.$jsrid.'();">'.$pic.'</a>'."\n".
1153: '<script type="text/javascript">'."\n".
1154: "function open_source_$jsrid() {\n".
1155: " sourcewin=window.open('/adm/source?inhibitmenu=yes&viewonly=1&filename=$showurl','LONsource',".
1156: "'height=500,width=600,resizable=yes,location=no,menubar=no,toolbar=no,scrollbars=yes');\n".
1157: "}\n".
1158: "</script>\n";
1159: }
1160: }
1161: }
1162: return $metainfo;
1163: }
1164:
1165: sub add_countdown_timer {
1166: my ($currdisp,$donebuttontime,$donebuttonextras) = @_;
1167: my ($collapse,$expand,$alttxt,$title,$donebutton);
1168: if ($currdisp eq 'inline') {
1169: $collapse = '► ';
1170: } else {
1171: $expand = '◄ ';
1172: }
1173: if ($donebuttontime) {
1174: my ($type,$proctor,$donebuttontext);
1175: if (ref($donebuttonextras) eq 'HASH') {
1176: $proctor = $donebuttonextras->{'proctor'};
1177: $donebuttontext = $donebuttonextras->{'text'};
1178: $type = $donebuttonextras->{'type'};
1179: } else {
1180: $donebuttontext = &mt('Done');
1181: $type = 'map';
1182: }
1183: $donebutton =
1184: &Apache::lonmenu::done_button_js($type,'','',$proctor,$donebuttontext);
1185: }
1186: unless ($env{'environment.icons'} eq 'iconsonly') {
1187: $alttxt = &mt('Timer');
1188: $title = $alttxt.' ';
1189: }
1190: my $desc = &mt('Countdown to due date/time');
1191: my $output = <<END;
1192: $donebutton
1193: <a href="javascript:toggleCountdown();" class="LC_menubuttons_link">
1194: <span id="ddcountcollapse" class="LC_menubuttons_inline_text">
1195: $collapse
1196: </span></a>
1197: <span id="duedatecountdown" class="LC_menubuttons_inline_text" style="display: $currdisp;"></span>
1198: <a href="javascript:toggleCountdown();" class="LC_menubuttons_link">
1199: <span id="ddcountexpand" class="LC_menubuttons_inline_text" >$expand</span>
1200: <img src="/res/adm/pages/timer.png" title="$desc" class="LC_icon" alt="$alttxt" /><span class="LC_menubuttons_inline_text">$title</span></a>
1201: END
1202: &Apache::lonhtmlcommon::add_breadcrumb_tool('tools',$output);
1203: return;
1204: }
1205:
1206: sub create_extlink {
1207: my ($url,$anchor,$title,$linktext) = @_;
1208: my $shownlink;
1209: unless ($title eq '') {
1210: $shownlink = '<span style="font-weight:bold;">'.$title.'</span><br />';
1211: }
1212: my $dest = &HTML::Entities::encode($url.$anchor,'&<>"');
1213: $shownlink .= '<a href="'.$dest.'">'.$linktext.'</a>';
1214: return $shownlink;
1215: }
1216:
1217: 1;
1218: __END__
1219:
1220:
1221: =head1 NAME
1222:
1223: Apache::lonpage - Page Handler
1224:
1225: =head1 SYNOPSIS
1226:
1227: Invoked by /etc/httpd/conf/srm.conf:
1228:
1229: <LocationMatch "^/res/.*\.page$>
1230: SetHandler perl-script
1231: PerlHandler Apache::lonpage
1232: </LocationMatch>
1233:
1234: =head1 INTRODUCTION
1235:
1236: This module renders a .page resource.
1237:
1238: This is part of the LearningOnline Network with CAPA project
1239: described at http://www.lon-capa.org.
1240:
1241: =head1 HANDLER SUBROUTINE
1242:
1243: This routine is called by Apache and mod_perl.
1244:
1245: =over 4
1246:
1247: =item *
1248:
1249: set document type for header only
1250:
1251: =item *
1252:
1253: tie db file
1254:
1255: =item *
1256:
1257: render page
1258:
1259: =item *
1260:
1261: add to symb list
1262:
1263: =item *
1264:
1265: page parms
1266:
1267: =item *
1268:
1269: Get SSI output, post parameters
1270:
1271: =item *
1272:
1273: SSI cell rendering
1274:
1275: =item *
1276:
1277: Deal with Applet codebases
1278:
1279: =item *
1280:
1281: Build page
1282:
1283: =item *
1284:
1285: send headers
1286:
1287: =item *
1288:
1289: start body
1290:
1291: =item *
1292:
1293: start form
1294:
1295: =item *
1296:
1297: start table
1298:
1299: =item *
1300:
1301: submit element, etc, render page, untie hash
1302:
1303: =back
1304:
1305: =head1 OTHER SUBROUTINES
1306:
1307: =over 4
1308:
1309: =item *
1310:
1311: euclid() : Euclid's method for determining the greatest common denominator.
1312:
1313: =item *
1314:
1315: tracetable() : Build page table.
1316:
1317: =back
1318:
1319: =cut
1320:
1321:
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