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- start_page takes care of registering urls and the loadeventes/ unloadevents needed

    1: # The LearningOnline Network
    2: # Chat
    3: #
    4: # $Id: lonchat.pm,v 1.13 2006/04/10 19:59:53 albertel 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: package Apache::lonchat;
   30: 
   31: use strict;
   32: use Apache::Constants qw(:common :http);
   33: use Apache::loncommon;
   34: use Apache::lonnet;
   35: 
   36: sub handler {
   37:     my $r = shift;
   38:     &Apache::loncommon::content_type($r,'text/html');
   39:     $r->send_http_header;
   40:     return OK if $r->header_only;
   41:     
   42:     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['group']);
   43:     my ($group,$group_elem);
   44:     if (defined($env{'form.group'})) {
   45:         $group = $env{'form.group'};
   46:         $group_elem = '<input type="hidden" name="group" value="'.$group.'" />'; 
   47:         if (! &Apache::lonnet::allowed('pgc',$env{'request.course.id'}.'/'.
   48:                                                                     $group) ) {
   49:             return HTTP_NOT_ACCEPTABLE;
   50:         }
   51:     } else {
   52:         if (! &Apache::lonnet::allowed('plc',$env{'request.course.id'}.
   53:               ($env{'request.course.sec'}?'/'.$env{'request.course.sec'}:'')
   54:                                    )) {
   55:             return HTTP_NOT_ACCEPTABLE;
   56:         }
   57:     }
   58: 
   59:     if ($env{'form.newchat'}) {
   60: 	&Apache::lonnet::chatsend(&Apache::lonfeedback::clear_out_html($env{'form.newchat'}),$env{'form.anonymous'},$group);
   61:     }
   62: # --------------------------------------------------- Print login screen header
   63:     my $latexHelp = Apache::loncommon::helpLatexCheatsheet();
   64:     my %loaditems = (onload => 'this.document.chatentry.newchat.focus();');
   65:     my $start_page = 
   66: 	&Apache::loncommon::start_page('Chat',undef,
   67: 				       {'only_body'   => 1,
   68: 					'add_entries' => \%loaditems,});
   69:     my $end_page = &Apache::loncommon::end_page();
   70:     $r->print(<<ENDDOCUMENT);
   71: $start_page
   72: <form method="post" name="chatentry">
   73: $latexHelp
   74: <input type="text" size="60" name="newchat">
   75: <input value="Post Anonymous" name="anonymous" type="submit">
   76: <input value="Post" name="newentry" type="submit">
   77: $group_elem
   78: </form>
   79: $end_page
   80: ENDDOCUMENT
   81:     return OK;
   82: } 
   83: 
   84: 1;
   85: __END__