1: # The LearningOnline Network with CAPA
2: # Wrapper for external and binary files as standalone resources
3: #
4: # $Id: lonwrapper.pm,v 1.43 2012/11/29 20:13:49 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: package Apache::lonwrapper;
31:
32: use strict;
33: use Apache::Constants qw(:common);
34: use Apache::lonenc();
35: use Apache::lonnet;
36: use Apache::lonlocal;
37: use Apache::loncommon();
38: use Apache::lonhtmlcommon();
39: use Apache::lonextresedit();
40:
41: # ================================================================ Main Handler
42: sub wrapper {
43: my ($url,$brcrum) = @_;
44:
45: my $forcereg;
46: unless ($env{'form.folderpath'}) {
47: $forcereg = 1;
48: }
49:
50: my $args = {'bgcolor' => '#FFFFFF'};
51: if ($forcereg) {
52: $args->{'force_register'} = $forcereg;
53: }
54: if (ref($brcrum) eq 'ARRAY') {
55: $args->{'bread_crumbs'} = $brcrum;
56: }
57:
58: my $startpage = Apache::loncommon::start_page('Menu',undef,$args);
59: my $endpage = Apache::loncommon::end_page();
60:
61: my $script = Apache::lonhtmlcommon::scripttag(<<SCRIPT );
62: \$(document).ready( function() {
63: \$(window).unbind('resize').resize(function(){
64: var header;
65: var offset = 5;
66: var height = 0;
67: var hdrtop = 0;
68: if (\$('div.LC_head_subbox:first').length) {
69: header = \$('div.LC_head_subbox:first');
70: offset = 9;
71: } else {
72: if (\$('#LC_breadcrumbs').length) {
73: header = \$('#LC_breadcrumbs');
74: }
75: }
76: if (header.length) {
77: height = header.height();
78: hdrtop = header.position().top;
79: }
80: var pos = height + hdrtop + offset;
81: \$('.LC_iframecontainer').css('top', pos);
82: });
83: });
84: window.onload = function(){ \$(window).trigger('resize') };
85: SCRIPT
86:
87: # javascript will position the iframe if window was resized (or zoomed)
88: return <<ENDFRAME;
89: $startpage
90: $script
91: <div class="LC_iframecontainer">
92: <iframe src="$url">No iframe support!</iframe>
93: </div>
94: $endpage
95: ENDFRAME
96: }
97:
98: sub handler {
99: my $r=shift;
100: &Apache::loncommon::content_type($r,'text/html');
101: $r->send_http_header;
102:
103: return OK if $r->header_only;
104:
105: my $url = $r->uri;
106: my ($is_ext,$brcrum);
107:
108: for ($url){
109: s|^/adm/wrapper||;
110: $is_ext = $_ =~ s|^/ext/|http://|;
111: s|http://https://|https://|;
112: s|:|:|g;
113: }
114:
115: if ($is_ext) {
116: &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
117: ['forceedit','register','folderpath','symb','idx','title']);
118: if (($env{'form.forceedit'}) &&
119: (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) &&
120: (($env{'form.folderpath'} =~ /^supplemental/) ||
121: ($env{'form.symb'} =~ /^uploaded/))) {
122: $r->print(
123: &Apache::lonextresedit::display_editor($url,$env{'form.folderpath'},
124: $env{'form.symb'},
125: $env{'form.idx'}));
126: return OK;
127: } elsif ($env{'form.folderpath'} =~ /^supplemental/) {
128: my $crstype = &Apache::loncommon::course_type();
129: my $title = $env{'form.title'};
130: if ($title eq '') {
131: $title = &mt('External Resource');
132: }
133: $brcrum =
134: &Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$title,1);
135: }
136: }
137:
138: #
139: # Actual URL
140: #
141: if ($url=~/$LONCAPA::assess_re/) {
142: #
143: # This is uploaded homework
144: #
145: $env{'request.state'}='uploaded';
146: &Apache::lonhomework::renderpage($r,$url);
147: } else {
148: #
149: # This is not homework
150: #
151: if ($is_ext) {
152: $ENV{'QUERY_STRING'} =~ s/(^|\&)symb=[^\&]*/$1/;
153: $ENV{'QUERY_STRING'} =~ s/\&$//;
154: }
155:
156: unless ($ENV{'QUERY_STRING'} eq '') {
157: $url.=(($url=~/\?/)?'&':'?').$ENV{'QUERY_STRING'};
158: }
159:
160: # encrypt url if not external
161: &Apache::lonenc::check_encrypt(\$url) if $url !~ /^https?\:/ ;
162:
163: $r->print( wrapper($url,$brcrum) );
164:
165: } # not just the menu
166:
167: return OK;
168: } # handler
169:
170: 1;
171: __END__
172:
173: =pod
174:
175: =head1 NAME
176:
177: Apache::lonwrapper - External and binary file management.
178:
179: =head1 SYNOPSIS
180:
181: Wrapper for external and binary files as standalone resources. Edit handler for rat maps; TeX content handler.
182:
183: This is part of the LearningOnline Network with CAPA project
184: described at http://www.lon-capa.org.
185:
186: =head1 Subroutines
187:
188: =over
189:
190: =item wrapper($url,$brcrum)
191:
192: Wraps $url in an iframe and generates a page for it.
193: $brcrum contains breadcrumbs for unregistered urls
194: (i.e., external resources in Supplemental Content).
195: Returns markup for the entire page.
196:
197: =item handler()
198:
199: =back
200:
201: =cut
202:
203:
204:
205:
206:
207:
208:
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