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- Breadcrumbs trail for uploaded content in nested folders in
  Supplemental Content.
- Breadcrumbs trail for external resource in Supplemental Content.
- lonwrapper.pm
  - more sanity checking in lonwrapper.pm.
  - increase offset for iframe when functions box is populated.

    1: # The LearningOnline Network with CAPA
    2: # Wrapper for external and binary files as standalone resources
    3: #
    4: # $Id: lonwrapper.pm,v 1.42 2012/11/27 23:45:15 raeburn Exp $
    5: #
    6: # Copyright Michigan State University Board of Trustees
    7: #
    8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
    9: #
   10: # LON-CAPA is free software; you can redistribute it and/or modify
   11: # it under the terms of the GNU General Public License as published by
   12: # the Free Software Foundation; either version 2 of the License, or
   13: # (at your option) any later version.
   14: #
   15: # LON-CAPA is distributed in the hope that it will be useful,
   16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
   17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   18: # GNU General Public License for more details.
   19: #
   20: # You should have received a copy of the GNU General Public License
   21: # along with LON-CAPA; if not, write to the Free Software
   22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   23: #
   24: # /home/httpd/html/adm/gpl.txt
   25: #
   26: # http://www.lon-capa.org/
   27: #
   28: 
   29: 
   30: 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 = $_ =~ s|^/ext/|http://|;         
  111:         s|http://https://|https://|;
  112:         s|&colon;|:|g;              
  113:     }
  114: 
  115:     if ($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:             $brcrum =
  130:                 &Apache::lonhtmlcommon::docs_breadcrumbs(undef,$crstype,undef,$env{'form.title'},1);
  131:             if (ref($brcrum) eq 'ARRAY') {
  132:                 my $last = $env{'form.title'};
  133:                 if ($last eq '') {
  134:                     $last = &mt('External Resource');
  135:                 }
  136:                 push(@{$brcrum},
  137:                          {'title' => $last,
  138:                           'text' => $last,
  139:                           'no_mt' => 1,
  140:                          });
  141: 
  142:             }
  143:         }
  144:     }
  145: 
  146: #
  147: # Actual URL
  148: #
  149:     if ($url=~/$LONCAPA::assess_re/) {
  150: #
  151: # This is uploaded homework
  152: #
  153:         $env{'request.state'}='uploaded';
  154:         &Apache::lonhomework::renderpage($r,$url);
  155:     } else {
  156: #
  157: # This is not homework
  158: #
  159:         if ($is_ext) {
  160:             $ENV{'QUERY_STRING'} =~ s/(^|\&)symb=[^\&]*/$1/;
  161:             $ENV{'QUERY_STRING'} =~ s/\&$//;
  162:         }
  163: 
  164:         unless ($ENV{'QUERY_STRING'} eq '') {
  165:             $url.=(($url=~/\?/)?'&':'?').$ENV{'QUERY_STRING'};
  166:         }
  167: 
  168:         # encrypt url if not external
  169:         &Apache::lonenc::check_encrypt(\$url) if $url !~ /^https?\:/ ;
  170: 
  171:         $r->print( wrapper($url,$brcrum) );
  172: 
  173:     } # not just the menu
  174:     
  175:     return OK;
  176: } # handler
  177: 
  178: 1;
  179: __END__
  180: 
  181: =pod
  182: 
  183: =head1 NAME
  184: 
  185: Apache::lonwrapper - External and binary file management.
  186: 
  187: =head1 SYNOPSIS
  188: 
  189: Wrapper for external and binary files as standalone resources. Edit handler for rat maps; TeX content handler.
  190: 
  191: This is part of the LearningOnline Network with CAPA project
  192: described at http://www.lon-capa.org.
  193: 
  194: =head1 Subroutines
  195: 
  196: =over
  197: 
  198: =item wrapper($url,$brcrum)
  199: 
  200: Wraps $url in an iframe and generates a page for it.
  201: $brcrum contains breadcrumbs for unregistered urls
  202: (i.e., external resources in Supplemental Content).
  203: Returns markup for the entire page.
  204: 
  205: =item handler()
  206: 
  207: =back
  208: 
  209: =cut
  210: 
  211: 
  212: 
  213: 
  214: 
  215: 
  216: