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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 = '4.013'; # $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__
-
- =cut
-
-