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# Copyright (c) 1995-2003 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 Carp;
use vars qw($VERSION);
$VERSION = '4.014'; # $Id: //depot/Tkutf8/Tk/Optionmenu.pm#13 $
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 $menu = $w->menu(-tearoff => 0);
# 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],
-foreground => [['SELF', 'CHILDREN'], undef, undef, undef],
-takefocus => [ qw/SELF takefocus Takefocus 1/ ],
-highlightthickness => [ qw/SELF highlightThickness HighlightThickness 1/ ],
-relief => [ qw/SELF relief Relief raised/ ],
);
# configure -variable and -command now so that when -options
# is set by main-line configure they are there to be set/called.
my $tvar = delete $args->{-textvariable};
my $vvar = delete $args->{-variable};
if (!defined($vvar))
{
if (defined $tvar)
{
$vvar = $tvar;
}
else
{
my $new;
$vvar = \$new;
}
}
$tvar = $vvar if (!defined($tvar));
$w->configure(-textvariable => $tvar, -variable => $vvar);
$w->configure(-command => $vvar) if ($vvar = delete $args->{-command});
}
sub setOption
{
my ($w, $label, $val) = @_;
my $tvar = $w->cget(-textvariable);
my $vvar = $w->cget(-variable);
if (@_ == 2)
{
$val = $label;
}
$$tvar = $label if $tvar;
$$vvar = $val if $vvar;
$w->Callback(-command => $val);
}
sub addOptions
{
my $w = shift;
my $menu = $w->menu;
my $tvar = $w->cget(-textvariable);
my $vvar = $w->cget(-variable);
my $oldt = $$tvar;
my $width = $w->cget('-width');
my %hash;
my $first;
while (@_)
{
my $val = shift;
my $label = $val;
if (ref $val)
{
if ($vvar == $tvar)
{
my $new = $label;
$w->configure(-textvariable => ($tvar = \$new));
}
($label, $val) = @$val;
}
my $len = length($label);
$width = $len if (!defined($width) || $len > $width);
$menu->command(-label => $label, -command => [ $w , 'setOption', $label, $val ]);
$hash{$label} = $val;
$first = $label unless defined $first;
}
if (!defined($oldt) || !exists($hash{$oldt}))
{
$w->setOption($first, $hash{$first}) if defined $first;
}
$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__
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