File:
[LON-CAPA] /
rat /
lonpage.pm
Revision
1.96:
download - view:
text,
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select for diffs
Thu Jul 28 03:14:09 2011 UTC (12 years, 9 months ago) by
raeburn
Branches:
MAIN
CVS tags:
HEAD
- Bug 6459.
- Overwriting previously submitted file in "turned_in" portfolio.
- Prompt to confirm overwrite now supported for resources in .page.
- &file_delchk_js() and &file_overwritechk_js() routines in structuretags.pm
moved to a consolidated routine: &file_submissionchk_js() in lonhtmlcommon.pm
to facilitate re-use.
- Calls to &file_overwritechk_js() omitted from individual resources if
enclosing map is .page. Single call from lonpage.pm instead (with
refs to hashes with information about paths and numbers of response items
in resources in .page included there.
- Pop-up confirmations for overwrite and/or deletions supported for both
"Submit Answer" and "Submit All" button presses.
- Triggers for multiple response items aggregated into one pop-up
for overwrites, and one for deletions (if applicable).
- Generation of pop-up to confirm deletions in a .task now uses same mechanism
(separate file_delchk_js() eliminated).`
1: # The LearningOnline Network with CAPA
2: # Page Handler
3: #
4: # $Id: lonpage.pm,v 1.96 2011/07/28 03:14:09 raeburn Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: ###
29:
30:
31:
32:
33: package Apache::lonpage;
34:
35: use strict;
36: use Apache::Constants qw(:common :http);
37: use Apache::lonnet;
38: use Apache::loncommon();
39: use Apache::lonxml();
40: use Apache::lonlocal;
41: use Apache::lonmenu;
42: use HTML::TokeParser;
43: use GDBM_File;
44: use Apache::lonsequence;
45: use lib '/home/httpd/lib/perl/';
46: use LONCAPA;
47:
48:
49: # -------------------------------------------------------------- Module Globals
50: my %hash;
51: my @rows;
52:
53: # ------------------------------------------------------------------ Euclid gcd
54:
55: sub euclid {
56: my ($e,$f)=@_;
57: my $a; my $b; my $r;
58: if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; }
59: while ($r!=0) {
60: $a=$b; $b=$r;
61: $r=$a%$b;
62: }
63: return $b;
64: }
65:
66: # ------------------------------------------------------------ Build page table
67:
68: sub tracetable {
69: my ($sofar,$rid,$beenhere)=@_;
70: my $further=$sofar;
71: my $randomout=0;
72: unless ($env{'request.role.adv'}) {
73: $randomout = $hash{'randomout_'.$rid};
74: }
75: unless ($beenhere=~/\&$rid\&/) {
76: $beenhere.=$rid.'&';
77: unless ($randomout) {
78: if (defined($hash{'is_map_'.$rid})) {
79: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
80: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
81: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
82: $sofar=
83: &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},
84: '&'.$frid.$beenhere);
85: $sofar++;
86: if ($hash{'src_'.$frid}) {
87: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid});
88: if (($brepriv eq '2') || ($brepriv eq 'F')) {
89: if (defined($rows[$sofar])) {
90: $rows[$sofar].='&'.$frid;
91: } else {
92: $rows[$sofar]=$frid;
93: }
94: }
95: }
96: }
97: } else {
98: $sofar++;
99: if ($hash{'src_'.$rid}) {
100: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid});
101: if (($brepriv eq '2') || ($brepriv eq 'F')) {
102: if (defined($rows[$sofar])) {
103: $rows[$sofar].='&'.$rid;
104: } else {
105: $rows[$sofar]=$rid;
106: }
107: }
108: }
109: }
110: }
111:
112: if (defined($hash{'to_'.$rid})) {
113: my $mincond=1;
114: my $next='';
115: foreach (split(/\,/,$hash{'to_'.$rid})) {
116: my $thiscond=
117: &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}});
118: if ($thiscond>=$mincond) {
119: if ($next) {
120: $next.=','.$_.':'.$thiscond;
121: } else {
122: $next=$_.':'.$thiscond;
123: }
124: if ($thiscond>$mincond) { $mincond=$thiscond; }
125: }
126: }
127: foreach (split(/\,/,$next)) {
128: my ($linkid,$condval)=split(/\:/,$_);
129: if ($condval>=$mincond) {
130: my $now=&tracetable($sofar,$hash{'goesto_'.$linkid},$beenhere);
131: if ($now>$further) { $further=$now; }
132: }
133: }
134: }
135: }
136: return $further;
137: }
138:
139: # ================================================================ Main Handler
140:
141: sub handler {
142: my $r=shift;
143:
144: # ------------------------------------------- Set document type for header only
145:
146: if ($r->header_only) {
147: if ($env{'browser.mathml'}) {
148: &Apache::loncommon::content_type($r,'text/xml');
149: } else {
150: &Apache::loncommon::content_type($r,'text/html');
151: }
152: $r->send_http_header;
153: return OK;
154: }
155:
156: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
157: ['forceselect','launch']);
158: my $number_of_columns = 1;
159: my $requrl=$r->uri;
160: my $target = $env{'form.grade_target'};
161:
162: # Short term solution: define target as 'tex_answer' when retrieving answers
163: # for resources in a .page when generating printouts.
164: # A better long-term fix would be to modify the way problem rendering, and
165: # answer rendering are retrieved for individual resources when printing a .page,
166: # so rendered problem and answer are sequential for individual resources in
167: # the .page
168: #
169: if ($target eq 'answer') {
170: if ($env{'form.answer_output_mode'} eq 'tex') {
171: $target = 'tex_answer';
172: }
173: }
174: # &Apache::lonnet::logthis("Got a target of $target");
175: if ($target eq 'meta') {
176: &Apache::loncommon::content_type($r,'text/html');
177: $r->send_http_header;
178: return OK;
179: }
180: # ----------------------------------------------------------------- Tie db file
181: if (($env{'request.course.fn'}) && (!$env{'form.forceselect'})) {
182: my $fn=$env{'request.course.fn'};
183: if (-e "$fn.db") {
184: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) {
185: # ------------------------------------------------------------------- Hash tied
186: my $firstres=$hash{'map_start_'.$requrl};
187: my $lastres=$hash{'map_finish_'.$requrl};
188: if (($firstres) && ($lastres)) {
189: # ----------------------------------------------------------------- Render page
190:
191: @rows=();
192:
193: &tracetable(0,$firstres,'&');
194:
195: # ------------------------------------------------------------ Add to symb list
196:
197: my $i;
198: my %symbhash=();
199: for ($i=0;$i<=$#rows;$i++) {
200: if ($rows[$i]) {
201: my @colcont=split(/\&/,$rows[$i]);
202: foreach my $rid (@colcont) {
203: my ($mapid,$resid)=split(/\./,$rid);
204: $symbhash{$hash{'src_'.$rid}}=
205: [$hash{'src_'.$rid},$resid];
206: }
207: }
208: }
209: &Apache::lonnet::symblist($requrl,%symbhash);
210:
211: # ------------------------------------------------------------------ Page parms
212:
213: my $j;
214: my $lcm=1;
215: my $contents=0;
216: my $nforms=0;
217: my $nuploads=0;
218: my %turninpaths;
219: my %multiresps;
220: my $turninparent;
221:
222: my %ssibody=();
223: my %ssibgcolor=();
224: my %ssitext=();
225: my %ssilink=();
226: my %ssivlink=();
227: my %ssialink=();
228:
229: my %cellemb=();
230:
231: my $allscript='';
232: my $allmeta='';
233:
234: my $isxml=0;
235: my $xmlheader='';
236: my $xmlbody='';
237:
238: # --------------------------------------------- Get SSI output, post parameters
239:
240: for ($i=0;$i<=$#rows;$i++) {
241: if ($rows[$i]) {
242: $contents++;
243: my @colcont=split(/\&/,$rows[$i]);
244: $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1));
245: foreach (@colcont) {
246: my $src=$hash{'src_'.$_};
247: my ($extension)=($src=~/\.(\w+)$/);
248: if ($hash{'encrypted_'.$_}) {
249: $src=&Apache::lonenc::encrypted($src);
250: }
251: $cellemb{$_}=
252: &Apache::loncommon::fileembstyle($extension);
253: if ($cellemb{$_} eq 'ssi') {
254: # --------------------------------------------------------- This is an SSI cell
255: my ($mapid,$resid)=split(/\./,$_);
256: my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$src);
257:
258: my $prefix=$_.'_';
259: my %posthash=('request.prefix' => $prefix,
260: 'LONCAPA_INTERNAL_no_discussion' => 'true',
261: 'symb' => $symb);
262: if (($env{'form.grade_target'} eq 'tex') ||
263: ($env{'form.answer_output_mode'} eq 'tex')) {
264: $posthash{'grade_target'}=$env{'form.grade_target'};
265: $posthash{'textwidth'}=$env{'form.textwidth'};
266: $posthash{'problem_split'}=$env{'form.problem_split'};
267: $posthash{'latex_type'}=$env{'form.latex_type'};
268: $posthash{'rndseed'}=$env{'form.rndseed'};
269: $posthash{'answer_output_mode'} = $env{'form.answer_output_mode'};
270: }
271: my $submitted=exists($env{'form.all_submit'});
272: if (!$submitted) {
273: foreach my $key (keys(%env)) {
274: if ($key=~/^form.\Q$prefix\Esubmit_/) {
275: $submitted=1;last;
276: }
277: }
278: }
279: if ($submitted) {
280: foreach my $key (keys(%env)) {
281: if ($key=~/^form.\Q$prefix\E/) {
282: my $name=$key;
283: $name=~s/^form.\Q$prefix\E//;
284: $posthash{$name}=$env{$key};
285: }
286: }
287: if (exists($env{'form.all_submit'})) {
288: $posthash{'all_submit'}='yes';
289: }
290: }
291: my $output=Apache::lonnet::ssi($src,%posthash);
292: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
293: if (($target eq 'tex') || ($target eq 'tex_answer')) {
294: $output =~ s/^([^&]+)\\begin{document}//;
295: $output =~ s/\\end{document}//;
296: # $output = '\parbox{\minipagewidth}{ '.$output.' }';
297: #some additional cleanup necessary for LateX (due to limitations of table environment
298: $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g;
299: }
300: my $parser=HTML::TokeParser->new(\$output);
301: my $token;
302: my $thisdir=$src;
303: my $bodydef=0;
304: my $thisxml=0;
305: my @rlinks=();
306: if ($output=~/\?xml/) {
307: $isxml=1;
308: $thisxml=1;
309: $output=~
310: /((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si;
311: $xmlheader=$1;
312: }
313: while ($token=$parser->get_token) {
314: if ($token->[0] eq 'S') {
315: if ($token->[1] eq 'a') {
316: if ($token->[2]->{'href'}) {
317: $rlinks[$#rlinks+1]=
318: $token->[2]->{'href'};
319: }
320: } elsif ($token->[1] eq 'img') {
321: $rlinks[$#rlinks+1]=
322: $token->[2]->{'src'};
323: } elsif ($token->[1] eq 'embed') {
324: $rlinks[$#rlinks+1]=
325: $token->[2]->{'src'};
326: } elsif ($token->[1] eq 'base') {
327: $thisdir=$token->[2]->{'href'};
328: } elsif ($token->[1] eq 'body') {
329: $bodydef=1;
330: $ssibgcolor{$_}=$token->[2]->{'bgcolor'};
331: $ssitext{$_}=$token->[2]->{'text'};
332: $ssilink{$_}=$token->[2]->{'link'};
333: $ssivlink{$_}=$token->[2]->{'vlink'};
334: $ssialink{$_}=$token->[2]->{'alink'};
335: if ($thisxml) {
336: $xmlbody=$token->[4];
337: }
338: } elsif ($token->[1] eq 'meta') {
339: if ($token->[4] !~ m:/>$:) {
340: $allmeta.="\n".$token->[4].'</meta>';
341: } else {
342: $allmeta.="\n".$token->[4];
343: }
344: } elsif (($token->[1] eq 'script') &&
345: ($bodydef==0)) {
346: $allscript.="\n\n"
347: .$parser->get_text('/script');
348: }
349: }
350: }
351: if ($output=~/\<body[^\>]*\>(.*)/si) {
352: $output=$1;
353: }
354: $output=~s/\<\/body\>.*//si;
355: if ($output=~/\<form/si) {
356: $nforms++;
357: $output=~s/\<form[^\>]*\>//gsi;
358: $output=~s/\<\/form[^\>]*\>//gsi;
359: if ($output=~/\<input[^\>]+name\s*=\s*[\'\"]*HWFILE/) {
360: $nuploads++;
361: }
362: $output=~
363: s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi;
364: if ($nuploads) {
365: $output=~
366: s/\<(input[^\>]+name=\"\Q$prefix\EHWFILE[^\>]+)\s*id\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\)]*)\>/\<$1 id="$prefix$2" $3\>/gsi;
367: ($turninpaths{$prefix},$multiresps{$prefix}) =
368: &Apache::loncommon::get_turnedin_filepath($symb,$env{'user.name'},$env{'user.domain'});
369: if ($turninparent eq '') {
370: $turninparent = $turninpaths{$prefix};
371: $turninparent =~ s{(/[^/]+)$}{};
372: }
373: }
374: $output=~
375: s/\<((?:input|select)[^\>]+\Qjavascript:setSubmittedPart\E)\(\s*[\'\"]([^\'\"]+)[\'\"]*\s*\)/\<$1('$2','$prefix')/gsi;
376: }
377: $thisdir=~s/\/[^\/]*$//;
378: foreach (@rlinks) {
379: unless (($_=~/^https?\:\/\//i) ||
380: ($_=~/^\//) ||
381: ($_=~/^javascript:/i) ||
382: ($_=~/^mailto:/i) ||
383: ($_=~/^\#/)) {
384: my $newlocation=
385: &Apache::lonnet::hreflocation($thisdir,$_);
386: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
387: }
388: }
389: # -------------------------------------------------- Deal with Applet codebases
390: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
391: $ssibody{$_}=$output;
392: # ---------------------------------------------------------------- End SSI cell
393: }
394: }
395: }
396: }
397: unless ($contents) {
398: &Apache::loncommon::content_type($r,'text/html');
399: $r->send_http_header;
400: $r->print(&Apache::loncommon::start_page(undef,undef,
401: {'force_register' => 1,}));
402: $r->print(&mt('This page is either empty or it only contains resources that are currently hidden').'. ');
403: $r->print('<br /><br />'.&mt('Please use the LON-CAPA navigation arrows to move to another item in the course').
404: &Apache::loncommon::end_page());
405: } else {
406: # ------------------------------------------------------------------ Build page
407:
408: # ---------------------------------------------------------------- Send headers
409: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
410: if ($isxml) {
411: &Apache::loncommon::content_type($r,'text/xml');
412: } else {
413: &Apache::loncommon::content_type($r,'text/html');
414: }
415: $r->send_http_header;
416: # ------------------------------------------------------------------------ Head
417: if ($allscript) {
418: $allscript =
419: "\n".'<script type="text/javascript">'."\n".
420: $allscript.
421: "\n</script>\n";
422: }
423: if (($nforms) && ($nuploads)) {
424: $allscript .= &Apache::lonhtmlcommon::file_submissionchk_js(\%turninpaths,\%multiresps);
425: }
426: # ------------------------------------------------------------------ Start body
427: $r->print(&Apache::loncommon::start_page(undef,$allscript,
428: {'force_register' => 1,
429: 'bgcolor' => '#ffffff',}));
430: # ------------------------------------------------------------------ Start form
431: if ($nforms) {
432: my $fmtag = '<form name="lonhomework" method="post" enctype="multipart/form-data"';
433: if ($nuploads) {
434: my $multi;
435: if ($nuploads > 1) {
436: $multi = 1;
437: }
438: $fmtag .= 'onsubmit="return file_submission_check(this,'."'$turninparent','$multi'".');"';
439: }
440: $fmtag .= ' action="'.
441: &Apache::lonenc::check_encrypt($requrl)
442: .'">';
443: $r->print($fmtag);
444: }
445: } elsif (($target eq 'tex') || ($target eq 'tex_answer')) {
446: # I think this is not needed as the header
447: # will be put in for each of the page parts
448: # by the londefdef.pm now that we are opening up
449: # the parts of a page.
450: #$r->print('\documentclass{article}
451: # \newcommand{\keephidden}[1]{}
452: # \usepackage[dvips]{graphicx}
453: # \usepackage{epsfig}
454: # \usepackage{calc}
455: # \usepackage{longtable}
456: # \begin{document}');
457: }
458: # ----------------------------------------------------------------- Start table
459: if (($target eq 'tex') || ($target eq 'tex_answer')) {
460: # # $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead ');
461: if ($number_of_columns le $lcm) {$number_of_columns=$lcm;};
462: } else {
463: $r->print('<table width="100%" cols="'.$lcm.'" border="0">');
464: }
465: # generate rows
466: for ($i=0;$i<=$#rows;$i++) {
467: if ($rows[$i]) {
468: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
469: $r->print("\n<tr>");
470: }
471: my @colcont=split(/\&/,$rows[$i]);
472: my $avespan=$lcm/($#colcont+1);
473: for ($j=0;$j<=$#colcont;$j++) {
474: my $rid=$colcont[$j];
475:
476: my $metainfo =&get_buttons(\%hash,$rid).'<br />';
477: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
478: $r->print('<td colspan="'.$avespan.'"');
479: }
480: if ($cellemb{$rid} eq 'ssi') {
481: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
482: if ($ssibgcolor{$rid}) {
483: $r->print(' bgcolor="'.
484: $ssibgcolor{$rid}.'"');
485: }
486: $r->print('>'.$metainfo.'<font');
487:
488: if ($ssitext{$rid}) {
489: $r->print(' text="'.$ssitext{$rid}.'"');
490: }
491: if ($ssilink{$rid}) {
492: $r->print(' link="'.$ssilink{$rid}.'"');
493: }
494: if ($ssitext{$rid}) {
495: $r->print(' vlink="'.$ssivlink{$rid}.'"');
496: }
497: if ($ssialink{$rid}) {
498: $r->print(' alink="'.$ssialink{$rid}.'"');
499: }
500: $r->print('>');
501: }
502: $r->print($ssibody{$rid});
503: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
504: $r->print('</font>');
505: }
506: if ($env{'course.'.
507: $env{'request.course.id'}.
508: '.pageseparators'} eq 'yes') {
509: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
510: $r->print('<hr />');
511: }
512: }
513: } elsif ($cellemb{$rid} eq 'img') {
514: $r->print('>'.$metainfo.'<img src="'.
515: $hash{'src_'.$rid}.'" />');
516: } elsif ($cellemb{$rid} eq 'emb') {
517: $r->print('>'.$metainfo.'<embed src="'.
518: $hash{'src_'.$rid}.'"></embed>');
519: } elsif (&Apache::lonnet::declutter($hash{'src_'.$rid}) !~/\.(sequence|page)$/) {
520: $r->print($metainfo.'<b>'.$hash{'title_'.$rid}.'</b><br />'.
521: &mt('It is recommended that you use an up-to-date virus scanner before handling this file.').'</p><p><table>'.
522: &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 />');
523: }
524: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
525: $r->print('</td>');
526: } else {
527: # for (my $incol=1;$incol<=$avespan;$incol++) {
528: # $r->print(' & ');
529: # }
530: }
531: }
532: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
533: $r->print('</tr>');
534: } else {
535: # $r->print('REMOVETHEHEADOFLONGTABLE\\\\');
536: }
537: }
538: }
539: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
540: $r->print("\n</table>");
541: } else {
542: # $r->print('\end{longtable}\strut');
543: }
544: # ---------------------------------------------------------------- Submit, etc.
545: if ($nforms) {
546: $r->print(
547: '<input name="all_submit" value="Submit All" type="'.
548: (($nforms>1)?'submit':'hidden').'"></input></form>');
549: }
550: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
551: $r->print(&Apache::loncommon::end_page({'discussion'
552: => 1,}));
553: } else {
554: $r->print('\end{document}'.$number_of_columns);
555: }
556: &Apache::lonnet::symblist($requrl,%symbhash);
557: my ($map,$id,$url)=&Apache::lonnet::decode_symb(&Apache::lonnet::symbread());
558: &Apache::lonnet::symblist($map,'last_known'=>[$url,$id]);
559: # -------------------------------------------------------------------- End page
560: }
561: # ------------------------------------------------------------- End render page
562: } else {
563: &Apache::loncommon::content_type($r,'text/html');
564: $r->send_http_header;
565: &Apache::lonsequence::viewmap($r,$requrl);
566: }
567: # ------------------------------------------------------------------ Untie hash
568: unless (untie(%hash)) {
569: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
570: "Could not untie coursemap $fn (browse).</font>");
571: }
572: # -------------------------------------------------------------------- All done
573: return OK;
574: # ----------------------------------------------- Errors, hash could no be tied
575: }
576: }
577: }
578: &Apache::loncommon::content_type($r,'text/html');
579: $r->send_http_header;
580: &Apache::lonsequence::viewmap($r,$requrl);
581: return OK;
582: }
583:
584: sub get_buttons {
585: my ($hash,$rid) = @_;
586:
587: my $metainfo = '';
588: my $esrc=&Apache::lonnet::declutter($hash->{'src_'.$rid});
589: my ($mapid,$resid)=split(/\./,$rid);
590: my $symb=&Apache::lonnet::encode_symb($hash->{'map_id_'.$mapid},
591: $resid,
592: $hash->{'src_'.$rid});
593: if ($hash->{'encrypted_'.$rid}) {
594: $symb=&Apache::lonenc::encrypted($symb);
595: $esrc=&Apache::lonenc::encrypted($esrc);
596: }
597: if ($hash->{'src_'.$rid} !~ m-^/uploaded/-
598: && !$env{'request.enc'}
599: && ($env{'request.role.adv'}
600: || !$hash->{'encrypted_'.$rid})) {
601: $metainfo .='<a name="'.&escape($symb).'" />'.
602: '<a href="'.$hash->{'src_'.$rid}.'.meta'.'" target="LONcatInfo">'.
603: '<img src="/adm/lonMisc/cat_button.png" class="LC_icon" />'.
604: '</a>';
605: }
606: $metainfo .= '<a href="/adm/evaluate?postdata='.
607: &escape($esrc).
608: '" target="LONcatInfo">'.
609: '<img src="/adm/lonMisc/eval_button.png" class="LC_icon" />'.
610: '</a>';
611: if (($hash->{'src_'.$rid}=~/\.(problem|exam|quiz|assess|survey|form)$/) &&
612: ($hash->{'src_'.$rid} !~ m-^/uploaded/-)) {
613:
614: if (&Apache::lonnet::allowed('mgr',$env{'request.course.id'})) {
615: $metainfo.=
616: '<a href="/adm/grades?symb='.&escape($symb).
617: # '&command=submission" target="LONcatInfo">'.
618: '&command=submission">'.
619: '<img src="/adm/lonMisc/subm_button.png" class="LC_icon" />'.
620: '</a>'.
621: '<a href="/adm/grades?symb='.&escape($symb).
622: # '&command=gradingmenu" target="LONcatInfo">'.
623: '&command=gradingmenu">'.
624: '<img src="/adm/lonMisc/pgrd_button.png" class="LC_icon" />'.
625: '</a>';
626: }
627: if (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
628: $metainfo.=
629: '<a href="/adm/parmset?symb='.&escape($symb).
630: # '" target="LONcatInfo">'.
631: '" >'.
632: '<img src="/adm/lonMisc/pprm_button.png" class="LC_icon" />'.
633: '</a>';
634: }
635: }
636: return $metainfo;
637: }
638:
639: 1;
640: __END__
641:
642:
643: =head1 NAME
644:
645: Apache::lonpage - Page Handler
646:
647: =head1 SYNOPSIS
648:
649: Invoked by /etc/httpd/conf/srm.conf:
650:
651: <LocationMatch "^/res/.*\.page$>
652: SetHandler perl-script
653: PerlHandler Apache::lonpage
654: </LocationMatch>
655:
656: =head1 INTRODUCTION
657:
658: This module renders a .page resource.
659:
660: This is part of the LearningOnline Network with CAPA project
661: described at http://www.lon-capa.org.
662:
663: =head1 HANDLER SUBROUTINE
664:
665: This routine is called by Apache and mod_perl.
666:
667: =over 4
668:
669: =item *
670:
671: set document type for header only
672:
673: =item *
674:
675: tie db file
676:
677: =item *
678:
679: render page
680:
681: =item *
682:
683: add to symb list
684:
685: =item *
686:
687: page parms
688:
689: =item *
690:
691: Get SSI output, post parameters
692:
693: =item *
694:
695: SSI cell rendering
696:
697: =item *
698:
699: Deal with Applet codebases
700:
701: =item *
702:
703: Build page
704:
705: =item *
706:
707: send headers
708:
709: =item *
710:
711: start body
712:
713: =item *
714:
715: start form
716:
717: =item *
718:
719: start table
720:
721: =item *
722:
723: submit element, etc, render page, untie hash
724:
725: =back
726:
727: =head1 OTHER SUBROUTINES
728:
729: =over 4
730:
731: =item *
732:
733: euclid() : Euclid's method for determining the greatest common denominator.
734:
735: =item *
736:
737: tracetable() : Build page table.
738:
739: =back
740:
741: =cut
742:
743:
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