# The LearningOnline Network with CAPA
# Routines to control the menu
#
# $Id: lonmenu.pm,v 1.36 2003/02/14 14:30:09 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::Constants qw(:common);
use Apache::loncommon;
use Apache::File;
use vars qw(@desklines $readdesk);
# ============================================================= Start up remote
sub startupremote {
my ($lowerurl)=@_;
if ($ENV{'browser.interface'} eq 'textual') {
return ('<meta HTTP-EQUIV="Refresh" CONTENT="0.5; url='.$lowerurl.'" />');
}
my $configmenu=&rawconfig();
return(<<ENDREMOTESTARTUP);
<script>
function wheelswitch() {
if (window.status=='|') {
window.status='/';
} else {
if (window.status=='/') {
window.status='-';
} else {
if (window.status=='-') {
window.status='\\\\';
} else {
if (window.status=='\\\\') { window.status='|'; }
}
}
}
}
// ---------------------------------------------------------- The wait function
var canceltim;
function wait() {
if ((menuloaded==1) || (tim==1)) {
window.status='Done.';
if (tim==0) {
clearTimeout(canceltim);
$configmenu
window.location='$lowerurl';
} else {
alert("Remote Control timed out. It is possible that it was blocked by pop-up window filters.");
}
} else {
wheelswitch();
setTimeout('wait();',200);
}
}
function main() {
canceltim=setTimeout('tim=1;',60000);
window.status='-';
wait();
}
</script>
ENDREMOTESTARTUP
}
sub setflags() {
return(<<ENDSETFLAGS);
<script>
menuloaded=0;
tim=0;
</script>
ENDSETFLAGS
}
sub maincall() {
if ($ENV{'browser.interface'} eq 'textual') { return ''; }
return(<<ENDMAINCALL);
<script>
main();
</script>
ENDMAINCALL
}
# ================================================================= Reopen menu
sub reopenmenu {
my $nothing='';
if ($ENV{'browser.interface'} eq 'textual') { return ''; }
my $menuname='LCmenu'.$Apache::lonnet::perlvar{'lonHostID'};
if ($ENV{'browser.type'} eq 'explorer') { $nothing='javascript:void(0);'; }
return('window.open("'.$nothing.'","'.$menuname.'","",false);');
}
# =============================================================== Open the menu
sub open {
my $returnval='';
if ($ENV{'browser.interface'} eq 'textual') { return ''; }
my $menuname='LCmenu'.$Apache::lonnet::perlvar{'lonHostID'};
unless (shift eq 'unix') {
# resizing does not work on linux because of virtual desktop sizes
$returnval.=(<<ENDRESIZE);
if (window.screen) {
self.resizeTo(screen.availWidth-215,screen.availHeight-55);
self.moveTo(190,15);
}
ENDRESIZE
}
$returnval.=(<<ENDOPEN);
window.status='Opening LON-CAPA Remote Control';
var menu=window.open("/res/adm/pages/menu.html","$menuname",
"height=350,width=150,scrollbars=no,menubar=no,top=5,left=5,screenX=5,screenY=5");
ENDOPEN
return '<script>'.$returnval.'</script>';
}
# ============================================================ Switch Menu Item
sub switchmenu {
my ($row,$col,$imgsrc,$texttop,$textbot,$action,$description)=@_;
if ($ENV{'browser.interface'} eq 'textual') { return ''; }
my $openwin=&openmenu();
return(<<ENDSMENU);
<script>
var swmenu=$openwin
swmenu.switchbutton($row,$col,"$imgsrc","$texttop","$textbot","$action","$description");
</script>
ENDSMENU
}
# ================================================================== Raw Config
sub clear {
my ($row,$col)=@_;
unless ($ENV{'browser.interface'} eq 'textual') {
return "\n".qq(window.status+='.';swmenu.clearbut($row,$col););
} else { return ''; }
}
# Switch acts on the javascript that is executed when a button is clicked.
# The javascript is usually similar to "go('/adm/roles')" or "cstrgo(..)".
sub switch {
my ($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc)=@_;
$act=~s/\$uname/$uname/g;
$act=~s/\$udom/$udom/g;
unless ($ENV{'browser.interface'} eq 'textual') {
return "\n".
qq(window.status+='.';swmenu.switchbutton($row,$col,"$img","$top","$bot","$act","$desc"););
} else {
my $text=$top.' '.$bot;
$text=~s/\- //;
return '<br /><a href="javascript:'.$act.';">'.$text.'</a> '.$desc;
}
}
sub secondlevel {
my $output='';
my
($uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act,$desc)=@_;
if ($prt eq 'any') {
$output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
} elsif ($prt=~/^r(\w+)/) {
if ($rol eq $1) {
$output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
}
}
return $output;
}
sub openmenu {
my $menuname='LCmenu'.$Apache::lonnet::perlvar{'lonHostID'};
if ($ENV{'browser.interface'} eq 'textual') { return ''; }
if ($ENV{'browser.type'} eq 'explorer') {
return "window.open('javascript:void(0);','".$menuname."');";
} else {
return "window.open('','".$menuname."');";
}
}
sub rawconfig {
my $textualoverride=shift;
my $output='';
unless ($ENV{'browser.interface'} eq 'textual') {
$output.=
"window.status='Opening Remote Control';var swmenu=".&openmenu().
"\nwindow.status='Configuring Remote Control ';";
} else {
unless ($textualoverride) { return ''; }
}
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'};
my $requested_domain = $ENV{'request.role.domain'};
foreach (@desklines) {
my ($row,$col,$pro,$prt,$img,$top,$bot,$act,$desc)=split(/\:/,$_);
$prt=~s/\$uname/$uname/g;
$prt=~s/\$udom/$udom/g;
$prt=~s/\$crs/$crs/g;
$prt=~s/\$requested_domain/$requested_domain/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,$act,$desc);
} elsif ($pro eq 'smp') {
unless ($adv) {
$output.=&secondlevel(
$uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act,$desc);
}
} elsif ($pro eq 'adv') {
if ($adv) {
$output.=&secondlevel(
$uname,$udom,$rol,$crs,$pub,$con,$row,$col,$prt,$img,$top,$bot,$act,$desc);
}
} elsif (($pro=~/p(\w+)/) && ($prt)) {
if (&Apache::lonnet::allowed($1,$prt)) {
$output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
}
} elsif ($pro eq 'course') {
if ($ENV{'request.course.fn'}) {
$output.=switch($uname,$udom,$row,$col,$img,$top,$bot,$act,$desc);
}
} elsif ($pro eq 'author') {
if ($author) {
if ((($prt eq 'rca') && ($ENV{'request.role'}=~/^ca/)) ||
(($prt eq 'rau') && ($ENV{'request.role'}=~/^au/))) {
# Check that we are on the correct machine
my $cadom=$requested_domain;
my $caname=$ENV{'user.name'};
if ($prt eq 'rca') {
($cadom,$caname)=
($ENV{'request.role'}=~/(\w+)\/(\w+)$/);
}
$act =~ s/\$caname/$caname/g;
my $home = &Apache::lonnet::homeserver($caname,$cadom);
if ($home eq $Apache::lonnet::perlvar{'lonHostID'}) {
$output.=switch($caname,$cadom,
$row,$col,$img,$top,$bot,$act,$desc);
}
}
}
}
}
unless ($ENV{'browser.interface'} eq 'textual') {
$output.="\nwindow.status='Synchronizing Time';swmenu.syncclock(1000*".time.");\nwindow.status='Remote Control Configured.';";
}
return $output;
}
# ======================================================================= Close
sub close {
if ($ENV{'browser.interface'} eq 'textual') { return ''; }
my $menuname='LCmenu'.$Apache::lonnet::perlvar{'lonHostID'};
return(<<ENDCLOSE);
<script>
window.status='Accessing Remote Control';
menu=window.open("/adm/rat/empty.html","$menuname",
"height=350,width=150,scrollbars=no,menubar=no");
window.status='Disabling Remote Control';
menu.active=0;
menu.autologout=0;
window.status='Closing Remote Control';
menu.close();
window.status='Done.';
</script>
ENDCLOSE
}
# ====================================================================== Footer
sub footer {
}
# ================================================ Handler when called directly
sub handler {
my $r = shift;
$r->content_type('text/html');
$r->send_http_header;
return OK if $r->header_only;
my $bodytag=&Apache::loncommon::bodytag('Main Menu');
# ------------------------------------------------------------ Print the screen
$r->print(<<ENDHEADER);
<html><head>
<title>LON-CAPA Main Menu</title>
<script>
function go(url) {
window.location=url;
}
function gopost(url) {
window.location=url;
}
</script>
</head>
$bodytag
ENDHEADER
$r->print(&rawconfig(1));
$r->print('</body></html>');
return OK;
}
# ================================================================ Main Program
BEGIN {
if (! defined($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__
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