File:
[LON-CAPA] /
rat /
lonpage.pm
Revision
1.107:
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Tue Dec 30 20:03:19 2014 UTC (9 years, 4 months ago) by
raeburn
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MAIN
CVS tags:
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- Changes in args passed to &edit_mathresponse_button() to support use of
id attributes by LON-CAPA Math editor.
- DragMath implementation now also uses id attributes.
- Support math editor in formularesponse and mathresponse items in
composite pages (.page).
1: # The LearningOnline Network with CAPA
2: # Page Handler
3: #
4: # $Id: lonpage.pm,v 1.107 2014/12/30 20:03:19 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 HTML::TokeParser;
44: use GDBM_File;
45: use Apache::lonsequence;
46: use lib '/home/httpd/lib/perl/';
47: use LONCAPA;
48:
49:
50: # -------------------------------------------------------------- Module Globals
51: my %hash;
52: my @rows;
53:
54: # ------------------------------------------------------------------ Euclid gcd
55:
56: sub euclid {
57: my ($e,$f)=@_;
58: my $a; my $b; my $r;
59: if ($e>$f) { $b=$e; $r=$f; } else { $r=$e; $b=$f; }
60: while ($r!=0) {
61: $a=$b; $b=$r;
62: $r=$a%$b;
63: }
64: return $b;
65: }
66:
67: # ------------------------------------------------------------ Build page table
68:
69: sub tracetable {
70: my ($sofar,$rid,$beenhere)=@_;
71: my $further=$sofar;
72: my $randomout=0;
73: unless ($env{'request.role.adv'}) {
74: $randomout = $hash{'randomout_'.$rid};
75: }
76: unless ($beenhere=~/\&$rid\&/) {
77: $beenhere.=$rid.'&';
78: unless ($randomout) {
79: if (defined($hash{'is_map_'.$rid})) {
80: if ((defined($hash{'map_start_'.$hash{'src_'.$rid}})) &&
81: (defined($hash{'map_finish_'.$hash{'src_'.$rid}}))) {
82: my $frid=$hash{'map_finish_'.$hash{'src_'.$rid}};
83: $sofar=
84: &tracetable($sofar,$hash{'map_start_'.$hash{'src_'.$rid}},
85: '&'.$frid.$beenhere);
86: $sofar++;
87: if ($hash{'src_'.$frid}) {
88: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$frid});
89: if (($brepriv eq '2') || ($brepriv eq 'F')) {
90: if (defined($rows[$sofar])) {
91: $rows[$sofar].='&'.$frid;
92: } else {
93: $rows[$sofar]=$frid;
94: }
95: }
96: }
97: }
98: } else {
99: $sofar++;
100: if ($hash{'src_'.$rid}) {
101: my $brepriv=&Apache::lonnet::allowed('bre',$hash{'src_'.$rid});
102: if (($brepriv eq '2') || ($brepriv eq 'F')) {
103: if (defined($rows[$sofar])) {
104: $rows[$sofar].='&'.$rid;
105: } else {
106: $rows[$sofar]=$rid;
107: }
108: }
109: }
110: }
111: }
112:
113: if (defined($hash{'to_'.$rid})) {
114: my $mincond=1;
115: my $next='';
116: foreach (split(/\,/,$hash{'to_'.$rid})) {
117: my $thiscond=
118: &Apache::lonnet::directcondval($hash{'condid_'.$hash{'undercond_'.$_}});
119: if ($thiscond>=$mincond) {
120: if ($next) {
121: $next.=','.$_.':'.$thiscond;
122: } else {
123: $next=$_.':'.$thiscond;
124: }
125: if ($thiscond>$mincond) { $mincond=$thiscond; }
126: }
127: }
128: foreach (split(/\,/,$next)) {
129: my ($linkid,$condval)=split(/\:/,$_);
130: if ($condval>=$mincond) {
131: my $now=&tracetable($sofar,$hash{'goesto_'.$linkid},$beenhere);
132: if ($now>$further) { $further=$now; }
133: }
134: }
135: }
136: }
137: return $further;
138: }
139:
140: # ================================================================ Main Handler
141:
142: sub handler {
143: my $r=shift;
144:
145: # ------------------------------------------- Set document type for header only
146:
147: if ($r->header_only) {
148: if ($env{'browser.mathml'}) {
149: &Apache::loncommon::content_type($r,'text/xml');
150: } else {
151: &Apache::loncommon::content_type($r,'text/html');
152: }
153: $r->send_http_header;
154: return OK;
155: }
156:
157: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
158: ['forceselect','launch']);
159: my $number_of_columns = 1;
160: my $requrl=$r->uri;
161: my $target = $env{'form.grade_target'};
162:
163: # Short term solution: define target as 'tex_answer' when retrieving answers
164: # for resources in a .page when generating printouts.
165: # A better long-term fix would be to modify the way problem rendering, and
166: # answer rendering are retrieved for individual resources when printing a .page,
167: # so rendered problem and answer are sequential for individual resources in
168: # the .page
169: #
170: if ($target eq 'answer') {
171: if ($env{'form.answer_output_mode'} eq 'tex') {
172: $target = 'tex_answer';
173: }
174: }
175: # &Apache::lonnet::logthis("Got a target of $target");
176: if ($target eq 'meta') {
177: &Apache::loncommon::content_type($r,'text/html');
178: $r->send_http_header;
179: return OK;
180: }
181: # ----------------------------------------------------------------- Tie db file
182: if (($env{'request.course.fn'}) && (!$env{'form.forceselect'})) {
183: my $fn=$env{'request.course.fn'};
184: if (-e "$fn.db") {
185: if (tie(%hash,'GDBM_File',"$fn.db",&GDBM_READER(),0640)) {
186: # ------------------------------------------------------------------- Hash tied
187: my $firstres=$hash{'map_start_'.$requrl};
188: my $lastres=$hash{'map_finish_'.$requrl};
189: if (($firstres) && ($lastres)) {
190: # ----------------------------------------------------------------- Render page
191:
192: @rows=();
193:
194: &tracetable(0,$firstres,'&');
195:
196: # ------------------------------------------------------------ Add to symb list
197:
198: my $i;
199: my %symbhash=();
200: for ($i=0;$i<=$#rows;$i++) {
201: if ($rows[$i]) {
202: my @colcont=split(/\&/,$rows[$i]);
203: foreach my $rid (@colcont) {
204: my ($mapid,$resid)=split(/\./,$rid);
205: $symbhash{$hash{'src_'.$rid}}=
206: [$hash{'src_'.$rid},$resid];
207: }
208: }
209: }
210: &Apache::lonnet::symblist($requrl,%symbhash);
211:
212: # ------------------------------------------------------------------ Page parms
213:
214: my $j;
215: my $lcm=1;
216: my $contents=0;
217: my $nforms=0;
218: my $nuploads=0;
219: my %turninpaths;
220: my %multiresps;
221: my $turninparent;
222:
223: my %ssibody=();
224: my %ssibgcolor=();
225: my %ssitext=();
226: my %ssilink=();
227: my %ssivlink=();
228: my %ssialink=();
229:
230: my %cellemb=();
231: my %cellexternal=();
232:
233: my $allscript='';
234: my $allmeta='';
235:
236: my $isxml=0;
237: my $xmlheader='';
238: my $xmlbody='';
239:
240: # --------------------------------------------- Get SSI output, post parameters
241:
242: for ($i=0;$i<=$#rows;$i++) {
243: if ($rows[$i]) {
244: $contents++;
245: my @colcont=split(/\&/,$rows[$i]);
246: $lcm*=($#colcont+1)/euclid($lcm,($#colcont+1));
247: foreach (@colcont) {
248: my $src=$hash{'src_'.$_};
249: my ($extension)=($src=~/\.(\w+)$/);
250: $cellexternal{$_}=($hash{'ext_'.$_} eq 'true:');
251: if ($hash{'encrypted_'.$_}) {
252: $src=&Apache::lonenc::encrypted($src);
253: }
254: $cellemb{$_}=
255: &Apache::loncommon::fileembstyle($extension);
256: if ($cellexternal{$_}) {
257: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
258: $ssibody{$_} = <<ENDEXT;
259: <iframe src="$src" width="100%">No iframe support!</iframe>
260: ENDEXT
261: }
262: } elsif ($cellemb{$_} eq 'ssi') {
263: # --------------------------------------------------------- This is an SSI cell
264: my ($mapid,$resid)=split(/\./,$_);
265: my $symb=&Apache::lonnet::encode_symb($hash{'map_id_'.$mapid},$resid,$src);
266:
267: my $prefix=$_.'_';
268: my $idprefix= join('_',($mapid,$resid,''));
269: my %posthash=('request.prefix' => $prefix,
270: 'LONCAPA_INTERNAL_no_discussion' => 'true',
271: 'symb' => $symb);
272: if (($env{'form.grade_target'} eq 'tex') ||
273: ($env{'form.answer_output_mode'} eq 'tex')) {
274: $posthash{'grade_target'}=$env{'form.grade_target'};
275: $posthash{'textwidth'}=$env{'form.textwidth'};
276: $posthash{'problem_split'}=$env{'form.problem_split'};
277: $posthash{'latex_type'}=$env{'form.latex_type'};
278: $posthash{'rndseed'}=$env{'form.rndseed'};
279: $posthash{'answer_output_mode'} = $env{'form.answer_output_mode'};
280: }
281: my $submitted=exists($env{'form.all_submit'});
282: if (!$submitted) {
283: foreach my $key (keys(%env)) {
284: if ($key=~/^form.\Q$prefix\Esubmit_/) {
285: $submitted=1;last;
286: }
287: }
288: }
289: if ($submitted) {
290: foreach my $key (keys(%env)) {
291: if ($key=~/^form.\Q$prefix\E/) {
292: my $name=$key;
293: $name=~s/^form.\Q$prefix\E//;
294: $posthash{$name}=$env{$key};
295: }
296: }
297: if (exists($env{'form.all_submit'})) {
298: $posthash{'all_submit'}='yes';
299: }
300: }
301: my $output=Apache::lonnet::ssi($src,%posthash);
302: $output=~s|//(\s*<!--)? BEGIN LON-CAPA Internal.+?// END LON-CAPA Internal\s*(-->)?\s||gs;
303: if (($target eq 'tex') || ($target eq 'tex_answer')) {
304: $output =~ s/^([^&]+)\\begin{document}//;
305: $output =~ s/\\end{document}//;
306: # $output = '\parbox{\minipagewidth}{ '.$output.' }';
307: #some additional cleanup necessary for LateX (due to limitations of table environment
308: $output =~ s/(\\vskip\s*\d+mm)\s*(\\\\)+/$1/g;
309: }
310: my $matheditor;
311: if ($output =~ /\Qjavascript:LC_mathedit_HWVAL_\E/) {
312: $matheditor = 'dragmath';
313: } elsif ($output =~ /LCmathField/) {
314: $matheditor = 'lcmath';
315: }
316: my $parser=HTML::TokeParser->new(\$output);
317: my $token;
318: my $thisdir=$src;
319: my $bodydef=0;
320: my $thisxml=0;
321: my @rlinks=();
322: if ($output=~/\?xml/) {
323: $isxml=1;
324: $thisxml=1;
325: $output=~
326: /((?:\<(?:\?xml|\!DOC|html)[^\>]*(?:\>|\>\]\>)\s*)+)\<body[^\>]*\>/si;
327: $xmlheader=$1;
328: }
329: while ($token=$parser->get_token) {
330: if ($token->[0] eq 'S') {
331: if ($token->[1] eq 'a') {
332: if ($token->[2]->{'href'}) {
333: $rlinks[$#rlinks+1]=
334: $token->[2]->{'href'};
335: }
336: } elsif ($token->[1] eq 'img') {
337: $rlinks[$#rlinks+1]=
338: $token->[2]->{'src'};
339: } elsif ($token->[1] eq 'embed') {
340: $rlinks[$#rlinks+1]=
341: $token->[2]->{'src'};
342: } elsif ($token->[1] eq 'base') {
343: $thisdir=$token->[2]->{'href'};
344: } elsif ($token->[1] eq 'body') {
345: $bodydef=1;
346: $ssibgcolor{$_}=$token->[2]->{'bgcolor'};
347: $ssitext{$_}=$token->[2]->{'text'};
348: $ssilink{$_}=$token->[2]->{'link'};
349: $ssivlink{$_}=$token->[2]->{'vlink'};
350: $ssialink{$_}=$token->[2]->{'alink'};
351: if ($thisxml) {
352: $xmlbody=$token->[4];
353: }
354: } elsif ($token->[1] eq 'meta') {
355: if ($token->[4] !~ m:/>$:) {
356: $allmeta.="\n".$token->[4].'</meta>';
357: } else {
358: $allmeta.="\n".$token->[4];
359: }
360: } elsif (($token->[1] eq 'script') &&
361: ($bodydef==0)) {
362: $allscript.="\n\n"
363: .$parser->get_text('/script');
364: }
365: }
366: }
367: if ($output=~/\<body[^\>]*\>(.*)/si) {
368: $output=$1;
369: }
370: $output=~s/\<\/body\>.*//si;
371: if ($output=~/\<form/si) {
372: $nforms++;
373: $output=~s/\<form[^\>]*\>//gsi;
374: $output=~s/\<\/form[^\>]*\>//gsi;
375: if ($output=~/\<input[^\>]+name\s*=\s*[\'\"]*HWFILE/) {
376: $nuploads++;
377: }
378: $output=~
379: s/\<((?:input|select|button|textarea)[^\>]+)name\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 name="$prefix$2" $3\>/gsi;
380: $output=~
381: s/\<((?:input|select|button|textarea)[^\>]+)id\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\>]*)\>/\<$1 id="$idprefix$2" $3\>/gsi;
382: if ($matheditor eq 'dragmath') {
383: $output=~
384: s/(\Qjavascript:LC_mathedit_\E)(HWVAL_)([^'"]+?)(\(['"]*)(\QHWVAL_\E\3['"]\)\;void\(0\)\;)/$1$idprefix$2$3$4$idprefix$5/g;
385: $output=~
386: s/(function\s+LC_mathedit_)(HWVAL_)([^'"]+?)(\s+\(LCtextline\))/$1$idprefix$2$3$4/g;
387: } elsif ($matheditor eq 'lcmath') {
388: $output=~
389: s/(var\s+LCmathField\s+=\s+document\.getElementById\(['"])([^'"]+?)(['"]\)\;)/$1$idprefix$2$3/g;
390: }
391: $output=~
392: s/(\Q<div id="msg_\E)(\Qsubmit_\E)([^"]*)(\Q" style="display:none">\E)/<input type="hidden" name="$prefix$2$3_pressed" id="$idprefix$2$3_pressed" value="" \/>$1$idprefix$2$3$4/g;
393: $output=~
394: s/(\Q<td class="LC_status_\E)(\Qsubmit_\E)([^\"]*)(\s*[^\"]*"\>)/$1$idprefix$2$3$4/g;
395: if ($nuploads) {
396: $output=~
397: s/\<(input[^\>]+name=\"\Q$prefix\EHWFILE[^\>]+)\s*id\s*\=\s*[\'\"]*([^\'\"]+)[\'\"]*([^\)]*)\>/\<$1 id="$prefix$2" $3\>/gsi;
398: ($turninpaths{$prefix},$multiresps{$prefix}) =
399: &Apache::loncommon::get_turnedin_filepath($symb,$env{'user.name'},$env{'user.domain'});
400: if ($turninparent eq '') {
401: $turninparent = $turninpaths{$prefix};
402: $turninparent =~ s{(/[^/]+)$}{};
403: }
404: }
405: $output=~
406: s/\<((?:input|select)[^\>]+\Qjavascript:setSubmittedPart\E)\(\s*[\'\"]([^\'\"]+)[\'\"]*\s*\)/\<$1('$2','$prefix')/gsi;
407: }
408: $thisdir=~s/\/[^\/]*$//;
409: foreach (@rlinks) {
410: unless (($_=~/^https?\:\/\//i) ||
411: ($_=~/^\//) ||
412: ($_=~/^javascript:/i) ||
413: ($_=~/^mailto:/i) ||
414: ($_=~/^\#/)) {
415: my $newlocation=
416: &Apache::lonnet::hreflocation($thisdir,$_);
417: $output=~s/(\"|\'|\=\s*)$_(\"|\'|\s|\>)/$1$newlocation$2/;
418: }
419: }
420: # -------------------------------------------------- Deal with Applet codebases
421: $output=~s/(\<applet[^\>]+)(codebase\=[^\S\>]+)*([^\>]*)\>/$1.($2?$2:' codebase="'.$thisdir.'"').$3.'>'/gei;
422: $ssibody{$_}=$output;
423: # ---------------------------------------------------------------- End SSI cell
424: }
425: }
426: }
427: }
428: unless ($contents) {
429: &Apache::loncommon::content_type($r,'text/html');
430: $r->send_http_header;
431: $r->print(&Apache::loncommon::start_page(undef,undef,
432: {'force_register' => 1,}));
433: $r->print(&mt('This page is either empty or it only contains resources that are currently hidden').'. ');
434: $r->print('<br /><br />'.&mt('Please use the LON-CAPA navigation arrows to move to another item in the course').
435: &Apache::loncommon::end_page());
436: } else {
437: # ------------------------------------------------------------------ Build page
438:
439: # ---------------------------------------------------------------- Send headers
440: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
441: if ($isxml) {
442: &Apache::loncommon::content_type($r,'text/xml');
443: } else {
444: &Apache::loncommon::content_type($r,'text/html');
445: }
446: $r->send_http_header;
447: # ------------------------------------------------------------------------ Head
448: if ($allscript) {
449: $allscript =
450: "\n".'<script type="text/javascript">'."\n".
451: $allscript.
452: "\n</script>\n";
453: }
454: if (($nforms) && ($nuploads)) {
455: $allscript .= &Apache::lonhtmlcommon::file_submissionchk_js(\%turninpaths,\%multiresps);
456: }
457: if (($nforms) && (&Apache::lonhtmlcommon::htmlareabrowser())) {
458: my %textarea_args = (
459: dragmath => 'math',
460: );
461: $allscript .= &Apache::lonhtmlcommon::htmlareaselectactive(\%textarea_args);
462: }
463: # ------------------------------------------------------------------ Start body
464: $r->print(&Apache::loncommon::start_page(undef,$allscript,
465: {'force_register' => 1,
466: 'bgcolor' => '#ffffff',}));
467: # ------------------------------------------------------------------ Start form
468: if ($nforms) {
469: my $fmtag = '<form name="lonhomework" method="post" enctype="multipart/form-data"';
470: if ($nuploads) {
471: my $multi;
472: if ($nuploads > 1) {
473: $multi = 1;
474: }
475: $fmtag .= 'onsubmit="return file_submission_check(this,'."'$turninparent','$multi'".');"';
476: }
477: $fmtag .= ' action="'.
478: &Apache::lonenc::check_encrypt($requrl)
479: .'" id="LC_page">';
480: $r->print($fmtag);
481: }
482: } elsif (($target eq 'tex') || ($target eq 'tex_answer')) {
483: # I think this is not needed as the header
484: # will be put in for each of the page parts
485: # by the londefdef.pm now that we are opening up
486: # the parts of a page.
487: #$r->print('\documentclass{article}
488: # \newcommand{\keephidden}[1]{}
489: # \usepackage[dvips]{graphicx}
490: # \usepackage{epsfig}
491: # \usepackage{calc}
492: # \usepackage{longtable}
493: # \begin{document}');
494: }
495: # ----------------------------------------------------------------- Start table
496: if (($target eq 'tex') || ($target eq 'tex_answer')) {
497: # # $r->print('\begin{longtable}INSERTTHEHEADOFLONGTABLE\endfirsthead\endhead ');
498: if ($number_of_columns le $lcm) {$number_of_columns=$lcm;};
499: } else {
500: $r->print('<table width="100%" cols="'.$lcm.'" border="0">');
501: }
502: # generate rows
503: for ($i=0;$i<=$#rows;$i++) {
504: if ($rows[$i]) {
505: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
506: $r->print("\n<tr>");
507: }
508: my @colcont=split(/\&/,$rows[$i]);
509: my $avespan=$lcm/($#colcont+1);
510: for ($j=0;$j<=$#colcont;$j++) {
511: my $rid=$colcont[$j];
512: my $metainfo =&get_buttons(\%hash,$rid).'<br />';
513: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
514: $r->print('<td colspan="'.$avespan.'"');
515: }
516: if (($cellemb{$rid} eq 'ssi') || ($cellexternal{$rid})) {
517: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
518: if ($ssibgcolor{$rid}) {
519: $r->print(' bgcolor="'.
520: $ssibgcolor{$rid}.'"');
521: }
522: $r->print('>'.$metainfo.'<font');
523:
524: if ($ssitext{$rid}) {
525: $r->print(' text="'.$ssitext{$rid}.'"');
526: }
527: if ($ssilink{$rid}) {
528: $r->print(' link="'.$ssilink{$rid}.'"');
529: }
530: if ($ssitext{$rid}) {
531: $r->print(' vlink="'.$ssivlink{$rid}.'"');
532: }
533: if ($ssialink{$rid}) {
534: $r->print(' alink="'.$ssialink{$rid}.'"');
535: }
536: $r->print('>');
537: }
538: unless (($cellexternal{$rid}) &&
539: ($target eq 'tex') && ($target eq 'tex_answer')) {
540: $r->print($ssibody{$rid});
541: }
542: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
543: $r->print('</font>');
544: }
545: if ($env{'course.'.
546: $env{'request.course.id'}.
547: '.pageseparators'} eq 'yes') {
548: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
549: $r->print('<hr />');
550: }
551: }
552: } elsif ($cellemb{$rid} eq 'img') {
553: $r->print('>'.$metainfo.'<img src="'.
554: $hash{'src_'.$rid}.'" />');
555: } elsif ($cellemb{$rid} eq 'emb') {
556: $r->print('>'.$metainfo.'<embed src="'.
557: $hash{'src_'.$rid}.'"></embed>');
558: } elsif (&Apache::lonnet::declutter($hash{'src_'.$rid}) !~/\.(sequence|page)$/) {
559: $r->print($metainfo.'<b>'.$hash{'title_'.$rid}.'</b><br />');
560: unless ($cellemb{$rid} eq 'wrp') {
561: $r->print(&mt('It is recommended that you use an up-to-date virus scanner before handling this file.'));
562: }
563: $r->print('</p><p><table>'.
564: &Apache::londocs::entryline(0,
565: &mt("Click to download or use your browser's Save Link function"),
566: '/'.&Apache::lonnet::declutter($hash{'src_'.$rid})).
567: '</table></p><br />');
568: }
569: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
570: $r->print('</td>');
571: } else {
572: # for (my $incol=1;$incol<=$avespan;$incol++) {
573: # $r->print(' & ');
574: # }
575: }
576: }
577: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
578: $r->print('</tr>');
579: } else {
580: # $r->print('REMOVETHEHEADOFLONGTABLE\\\\');
581: }
582: }
583: }
584: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
585: $r->print("\n</table>");
586: } else {
587: # $r->print('\end{longtable}\strut');
588: }
589: # ---------------------------------------------------------------- Submit, etc.
590: if ($nforms) {
591: my $class;
592: if ($nforms > 1) {
593: $class = ' class="LC_hwk_submit"';
594: }
595: $r->print(
596: '<input name="all_submit" value="'.&mt('Submit All').'" type="'.
597: (($nforms>1)?'submit':'hidden').'"'.$class.' id="all_submit" />'.
598: '<div id="msg_all_submit" style="display:none">'.
599: &mt('Processing your submission ...').'</div></form>');
600: }
601: unless (($target eq 'tex') || ($target eq 'tex_answer')) {
602: $r->print(&Apache::loncommon::end_page({'discussion'
603: => 1,}));
604: } else {
605: $r->print('\end{document}'.$number_of_columns);
606: }
607: &Apache::lonnet::symblist($requrl,%symbhash);
608: my ($map,$id,$url)=&Apache::lonnet::decode_symb(&Apache::lonnet::symbread());
609: &Apache::lonnet::symblist($map,'last_known'=>[$url,$id]);
610: # -------------------------------------------------------------------- End page
611: }
612: # ------------------------------------------------------------- End render page
613: } else {
614: &Apache::loncommon::content_type($r,'text/html');
615: $r->send_http_header;
616: &Apache::lonsequence::viewmap($r,$requrl);
617: }
618: # ------------------------------------------------------------------ Untie hash
619: unless (untie(%hash)) {
620: &Apache::lonnet::logthis("<font color=blue>WARNING: ".
621: "Could not untie coursemap $fn (browse).</font>");
622: }
623: # -------------------------------------------------------------------- All done
624: return OK;
625: # ----------------------------------------------- Errors, hash could no be tied
626: }
627: }
628: }
629: &Apache::loncommon::content_type($r,'text/html');
630: $r->send_http_header;
631: &Apache::lonsequence::viewmap($r,$requrl);
632: return OK;
633: }
634:
635: sub get_buttons {
636: my ($hash,$rid) = @_;
637:
638: my $metainfo = '';
639: my $esrc=&Apache::lonnet::declutter($hash->{'src_'.$rid});
640: my ($mapid,$resid)=split(/\./,$rid);
641: my $symb=&Apache::lonnet::encode_symb($hash->{'map_id_'.$mapid},
642: $resid,
643: $hash->{'src_'.$rid});
644: if ($hash->{'encrypted_'.$rid}) {
645: $symb=&Apache::lonenc::encrypted($symb);
646: $esrc=&Apache::lonenc::encrypted($esrc);
647: }
648: if ($hash->{'src_'.$rid} !~ m-^/uploaded/-
649: && $hash->{'src_'.$rid} !~ m{^https?://}
650: && !$env{'request.enc'}
651: && ($env{'request.role.adv'}
652: || !$hash->{'encrypted_'.$rid})) {
653: $metainfo .='<a name="'.&escape($symb).'" />'.
654: '<a href="'.$hash->{'src_'.$rid}.'.meta'.'" target="LONcatInfo">'.
655: '<img src="/res/adm/pages/catalog.png" class="LC_icon"'.
656: ' alt="'.&mt('Show Metadata').'"'.
657: ' title="'.&mt('Show Metadata').'" />'.
658: '</a>';
659: }
660: if (($hash->{'src_'.$rid} !~ m{^/uploaded/}) &&
661: ($hash->{'src_'.$rid} !~ m{^https?://})) {
662: $metainfo .= '<a href="/adm/evaluate?postdata='.
663: &escape($esrc).
664: '" target="LONcatInfo">'.
665: '<img src="/res/adm/pages/eval.png" class="LC_icon"'.
666: ' alt="'.&mt('Provide my evaluation of this resource').'"'.
667: ' title="'.&mt('Provide my evaluation of this resource').'" />'.
668: '</a>';
669: }
670: if (($hash->{'src_'.$rid}=~/$LONCAPA::assess_re/) &&
671: ($hash->{'src_'.$rid} !~ m-^/uploaded/-)) {
672:
673: if (&Apache::lonnet::allowed('mgr',$env{'request.course.id'})) {
674: $metainfo.=
675: '<a href="/adm/grades?symb='.&escape($symb).
676: # '&command=submission" target="LONcatInfo">'.
677: '&command=submission">'.
678: '<img src="/adm/lonMisc/subm_button.png" class="LC_icon"'.
679: ' alt="'.&mt('View Submissions for a Student or a Group of Students').'"'.
680: ' title="'.&mt('View Submissions for a Student or a Group of Students').'" />'.
681: '</a>'.
682: '<a href="/adm/grades?symb='.&escape($symb).
683: # '&command=gradingmenu" target="LONcatInfo">'.
684: '&command=gradingmenu">'.
685: '<img src="/res/adm/pages/pgrd.png" class="LC_icon"'.
686: ' alt="'.&mt('Content Grades').'"'.
687: ' title="'.&mt('Content Grades').'" />'.
688: '</a>';
689: }
690: if (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
691: $metainfo.=
692: '<a href="/adm/parmset?symb='.&escape($symb).
693: # '" target="LONcatInfo">'.
694: '" >'.
695: '<img src="/adm/lonMisc/pprm_button.png" class="LC_icon"'.
696: ' alt="'.&mt('Content Settings').'"'.
697: ' title="'.&mt('Content Settings').'" />'.
698: '</a>';
699: }
700: }
701: if (($env{'request.course.id'}) && (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
702: my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
703: my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
704: my $file=&Apache::lonnet::declutter($hash->{'src_'.$rid});
705: my ($cfile,$home,$switchserver,$forceedit,$forceview) =
706: &Apache::lonnet::can_edit_resource($file,$cnum,$cdom,$hash->{'src_'.$rid},$symb);
707: if ($cfile ne '') {
708: my $jscall = &Apache::lonhtmlcommon::jump_to_editres($cfile,$home,$switchserver,
709: $forceedit,1,$symb,undef,
710: &escape($env{'form.title'}));
711: if ($jscall) {
712: my $icon = 'pcstr.png';
713: my $label = &mt('Edit');
714: my $title = &mt('Edit this resource');
715: my $pic = '<img src="'.&Apache::loncommon::lonhttpdurl('/res/adm/pages/'.$icon).'"'.
716: ' class="LC_icon" alt="'.$label.'" title="'.$title.'" />';
717: $metainfo .= ' <a href="javascript:'.$jscall.';">'.$pic.'</a>';
718: }
719: }
720: }
721: return $metainfo;
722: }
723:
724: 1;
725: __END__
726:
727:
728: =head1 NAME
729:
730: Apache::lonpage - Page Handler
731:
732: =head1 SYNOPSIS
733:
734: Invoked by /etc/httpd/conf/srm.conf:
735:
736: <LocationMatch "^/res/.*\.page$>
737: SetHandler perl-script
738: PerlHandler Apache::lonpage
739: </LocationMatch>
740:
741: =head1 INTRODUCTION
742:
743: This module renders a .page resource.
744:
745: This is part of the LearningOnline Network with CAPA project
746: described at http://www.lon-capa.org.
747:
748: =head1 HANDLER SUBROUTINE
749:
750: This routine is called by Apache and mod_perl.
751:
752: =over 4
753:
754: =item *
755:
756: set document type for header only
757:
758: =item *
759:
760: tie db file
761:
762: =item *
763:
764: render page
765:
766: =item *
767:
768: add to symb list
769:
770: =item *
771:
772: page parms
773:
774: =item *
775:
776: Get SSI output, post parameters
777:
778: =item *
779:
780: SSI cell rendering
781:
782: =item *
783:
784: Deal with Applet codebases
785:
786: =item *
787:
788: Build page
789:
790: =item *
791:
792: send headers
793:
794: =item *
795:
796: start body
797:
798: =item *
799:
800: start form
801:
802: =item *
803:
804: start table
805:
806: =item *
807:
808: submit element, etc, render page, untie hash
809:
810: =back
811:
812: =head1 OTHER SUBROUTINES
813:
814: =over 4
815:
816: =item *
817:
818: euclid() : Euclid's method for determining the greatest common denominator.
819:
820: =item *
821:
822: tracetable() : Build page table.
823:
824: =back
825:
826: =cut
827:
828:
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