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# Copyright (c) 1995-1998 Nick Ing-Simmons. All rights reserved.
# This program is free software; you can redistribute it and/or
# modify it under the same terms as Perl itself.
package Tk::Optionmenu;
require Tk::Menubutton;
require Tk::Menu;
use vars qw($VERSION @ISA);
$VERSION = '3.015'; # $Id: //depot/Tk8/Tk/Optionmenu.pm#15$
use base qw(Tk::Derived Tk::Menubutton);
use strict;
Construct Tk::Widget 'Optionmenu';
sub Populate
{
my ($w,$args) = @_;
$w->SUPER::Populate($args);
$args->{-indicatoron} = 1;
my $var = delete $args->{-textvariable};
unless (defined $var)
{
my $gen = undef;
$var = \$gen;
}
my $menu = $w->menu(-tearoff => 0);
$w->configure(-textvariable => $var);
# Should we allow -menubackground etc. as in -label* of Frame ?
$w->ConfigSpecs(-command => ['CALLBACK',undef,undef,undef],
-options => ['METHOD', undef, undef, undef],
-variable=> ['PASSIVE', undef, undef, undef],
-font => [['SELF',$menu], undef, undef, undef],
-takefocus => [ qw/SELF takefocus Takefocus 1/ ],
-highlightthickness => [ qw/SELF highlightThickness HighlightThickness 1/ ],
-relief => [ qw/SELF relief Relief raised/ ],
);
$w->configure(-variable => delete $args->{-variable});
}
sub setOption
{
my ($w, $label, $val) = @_;
$val = $label if @_ == 2;
my $var = $w->cget(-textvariable);
$$var = $label;
$var = $w->cget(-variable);
$$var = $val if $var;
$w->Callback(-command => $val);
}
sub addOptions
{
my $w = shift;
my $menu = $w->menu;
my $var = $w->cget(-textvariable);
my $width = $w->cget('-width');
while (@_)
{
my $val = shift;
my $label = $val;
if (ref $val)
{
($label, $val) = @$val;
}
my $len = length($label);
$width = $len if (!defined($width) || $len > $width);
$menu->command(-label => $label, -command => [ $w , 'setOption', $label, $val ]);
$w->setOption($label, $val) unless (defined $$var);
}
$w->configure('-width' => $width);
}
sub options
{
my ($w,$opts) = @_;
if (@_ > 1)
{
$w->menu->delete(0,'end');
$w->addOptions(@$opts);
}
else
{
return $w->_cget('-options');
}
}
1;
__END__
=cut
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