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Solves unloading of Remote on Explorer on Macs

# The LearningOnline Network with CAPA
# Routines to control the menu
#
# $Id: lonmenu.pm,v 1.18 2002/03/21 17:53:27 www Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
# (TeX Conversion Module
#
# 05/29/00,05/30 Gerd Kortemeyer)
#
# 10/05,05/28,05/30,06/01,06/08,06/09,07/04,08/07 Gerd Kortemeyer
# 02/15/02 Matthew Hall

package Apache::lonmenu;

use strict;
use Apache::lonnet;
use Apache::File;
use vars qw(@desklines $readdesk);
 
# =============================================================== Open the menu

sub open {
#    return(<<ENDOPEN);
#if (window.screen) {
#    self.resizeTo(screen.availWidth-215,screen.availHeight-30);
#    self.moveTo(190,15);
#}
    return(<<ENDOPEN);
<script>
menu=window.open("/res/adm/pages/menu.html","LONCAPAmenu",
"height=350,width=150,scrollbars=no,menubar=no,top=5,left=5,screenX=5,screenY=5");
</script>
ENDOPEN
}

# ============================================================ Switch Menu Item

sub switchmenu {
    my ($row,$col,$imgsrc,$texttop,$textbot,$action)=@_;
    my $openwin=&openmenu();
    return(<<ENDSMENU);
<script>
   swmenu=$openwin
   swmenu.switchbutton($row,$col,"$imgsrc","$texttop","$textbot","$action");
</script>
ENDSMENU
}

# ================================================================== Raw Config

sub clear {
    my ($row,$col)=@_;
    return qq(swmenu.clearbut($row,$col););
}

sub switch {
    my ($uname,$udom,$row,$col,$img,$top,$bot,$act)=@_;
    $act=~s/\$uname/$uname/g;
    $act=~s/\$udom/$udom/g;
    return "\n".
 qq(swmenu.switchbutton($row,$col,"$img","$top","$bot","$act"););
}

sub secondlevel {
    my $output='';
    my 
    ($uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act)=@_;
    if ($prt eq 'any') {
	   $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act);
    } elsif ($prt=~/^r(\w+)/) {
        if ($rol eq $1) {
           $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act);
        }
    }
    return $output;
}

sub openmenu {
    if ($ENV{'browser.type'} eq 'explorer') {
       return "window.open('javascript:void(0);','LONCAPAmenu');";
   } else {
       return "window.open('','LONCAPAmenu');";
   }
}

sub rawconfig {
    my $output="swmenu=".&openmenu();
    my $uname=$ENV{'user.name'};
    my $udom=$ENV{'user.domain'};
    my $adv=$ENV{'user.adv'};
    my $author=$ENV{'user.author'};
    my $crs='';
    if ($ENV{'request.course.id'}) {
       $crs='/'.$ENV{'request.course.id'};
       if ($ENV{'request.course.sec'}) {
	   $crs.='_'.$ENV{'request.course.sec'};
       }
       $crs=~s/\_/\//g;
    }
    my $pub=($ENV{'request.state'} eq 'published');
    my $con=($ENV{'request.state'} eq 'construct');
    my $rol=$ENV{'request.role'};
    foreach (@desklines) {
        my ($row,$col,$pro,$prt,$img,$top,$bot,$act)=split(/\:/,$_);
        $prt=~s/\$uname/$uname/g;
        $prt=~s/\$udom/$udom/g;
        $prt=~s/\$crs/$crs/g; 
        if ($pro eq 'clear') {
	    $output.=&clear($row,$col);
        } elsif ($pro eq 'any') {
               $output.=&secondlevel(
	  $uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act);
	} elsif ($pro eq 'smp') {
            unless ($adv) {
               $output.=&secondlevel(
          $uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act);
            }
        } elsif ($pro eq 'adv') {
            if ($adv) {
               $output.=&secondlevel(
	  $uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act);
            }
        } elsif (($pro=~/p(\w+)/) && ($prt)) {
	    if (&Apache::lonnet::allowed($1,$prt)) {
               $output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act);
            }
        } elsif ($pro eq 'author') {
            if ($author) {
                if (($prt eq 'rca') && ($ENV{'request.role'}=~/^ca/)) {
		    my ($cadom,$caname)=
                               ($ENV{'request.role'}=~/(\w+)\/(\w+)$/);
                    $output.=switch($caname,$cadom,
                                    $row,$col,$img,$top,$bot,$act);
                } elsif ($prt eq 'any') {
                    $output.=switch($ENV{'user.name'},$ENV{'user.domain'},
				    $row,$col,$img,$top,$bot,$act);
                }
            }
        }
    }
    return $output;
}

# ======================================================================= Close

sub close {
    return(<<ENDCLOSE);
<script>
menu=window.open("/adm/rat/empty.html","LONCAPAmenu",
                 "height=350,width=150,scrollbars=no,menubar=no");
menu.close();
</script>
ENDCLOSE
}

# ====================================================================== Footer

sub footer {

}

# ================================================================ Main Program

BEGIN {
  if (! defined($readdesk)) {
   {
    my $config=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.
				  '/mydesk.tab');
    while (my $configline=<$config>) {
       $configline=(split(/\#/,$configline))[0];
       $configline=~s/^\s+//;
       chomp($configline);
       if ($configline) {
          $desklines[$#desklines+1]=$configline;
       }
    }
   }
   $readdesk='done';
  }
}
1;
__END__