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Annotation of loncom/interface/lonmainmenu.pm, revision 1.10.2.2.6.1

1.1       albertel    1: # The LearningOnline Network with CAPA
                      2: # displays the main menu
                      3: #
1.10.2.2.6.1! raeburn     4: # $Id: lonmainmenu.pm,v 1.10.2.2 2014/05/22 12:47:27 raeburn Exp $
1.1       albertel    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: # There are two parameters controlling the action of this module:
                     30: #
                     31: # browser.interface - if this is 'textual', it overrides the second parameter
                     32: # and goes to screen reader PDA mode
                     33: #
                     34: 
                     35: package Apache::lonmainmenu;
                     36: 
                     37: use strict;
1.10.2.2  raeburn    38: use Apache::Constants qw(:common REDIRECT);
1.1       albertel   39: use Apache::loncommon();
1.2       albertel   40: use Apache::lonnet;
                     41: use Apache::lonmenu();
1.10.2.2.6.1! raeburn    42: use Apache::lonlocal;
1.1       albertel   43: 
                     44: sub handler {
                     45:     my $r = shift;
1.10.2.2  raeburn    46: 
                     47:     # Check for critical messages and redirect if present.
1.10.2.2.6.1! raeburn    48:     my ($redirect,$url) = &Apache::loncommon::critical_redirect(300,'menu');
1.10.2.2  raeburn    49:     if ($redirect) {
                     50:         &Apache::loncommon::content_type($r,'text/html');
                     51:         $r->header_out(Location => $url);
                     52:         return REDIRECT;
                     53:     }
                     54: 
1.1       albertel   55:     &Apache::loncommon::no_cache($r);
                     56:     &Apache::loncommon::content_type($r,'text/html');
                     57:     $r->send_http_header;
                     58:     return OK if $r->header_only;
                     59: 
                     60: # ---- Print the screen, pretend to be in text mode to generate text-based menu
1.8       www        61: # temporarily set interface to "faketextual" and remote to "off", which renders
                     62: # the main menu
1.7       www        63:     $env{'browser.interface'}='faketextual';
1.10.2.1  raeburn    64:     $env{'environment.remote'}='off';
1.6       droeschl   65:     $r->print(&Apache::loncommon::start_page( 'Main Menu',
1.9       droeschl   66:                                                undef,
1.6       droeschl   67:                                               {'bread_crumbs' => 1}));
1.10.2.2.6.1! raeburn    68: #
        !            69: # If menu collection is in effect in course context, and Main Menu is
        !            70: # not included, display message in place of usual menu items.
        !            71: #
        !            72:     if ($env{'request.course.id'}) {
        !            73:         my ($menucoll,$deeplinkmenu,$menuref) =
        !            74:             &Apache::loncommon::menucoll_in_effect();
        !            75:         if ($menucoll) {
        !            76:             if (ref($menuref) eq 'HASH') {
        !            77:                 if ($menuref->{'main'} eq 'n') {
        !            78:                     $r->print('<h3>'.&mt('Main Menu unavailable').'</h3>');
        !            79:                     unless ($deeplinkmenu) {
        !            80:                         my $crstype = &Apache::loncommon::course_type();
        !            81:                         $r->print('<p>'.&mt("Main Menu page is unavailable in this $crstype").'</p>');
        !            82:                     }
        !            83:                     $r->print(&Apache::loncommon::end_page());
        !            84:                     return OK;
        !            85:                 }
        !            86:             }
        !            87:         }
        !            88:     }
1.10      raeburn    89:     $r->print(&Apache::lonmenu::inlinemenu());
1.1       albertel   90:     $r->print(&Apache::loncommon::end_page());
                     91:     return OK;
                     92: }
                     93: 
                     94: 
                     95: 1;
                     96: __END__
                     97: 
                     98: 
                     99: 
                    100: 
                    101: 
                    102: 
                    103: