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-rw-r--r--Master/xemtex/perl/site/lib/Tk/Optionmenu.pm110
1 files changed, 110 insertions, 0 deletions
diff --git a/Master/xemtex/perl/site/lib/Tk/Optionmenu.pm b/Master/xemtex/perl/site/lib/Tk/Optionmenu.pm
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+++ b/Master/xemtex/perl/site/lib/Tk/Optionmenu.pm
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+# Copyright (c) 1995-1999 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($VERSION);
+$VERSION = '3.025'; # $Id: //depot/Tk8/Tk/Optionmenu.pm#25 $
+
+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/ ],
+
+ );
+
+ # configure -variable and -command now so that when -options
+ # is set by main-line configure they are there to be set/called.
+ $w->configure(-variable => $var) if ($var = delete $args->{-variable});
+ $w->configure(-command => $var) if ($var = delete $args->{-command});
+}
+
+sub setOption
+{
+ my ($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 $old = $$var;
+ my $width = $w->cget('-width');
+ my %hash;
+ my $first;
+ 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 ]);
+ $hash{$label} = $val;
+ $first = $label unless defined $first;
+ }
+ if (!defined($old) || !exists($hash{$old}))
+ {
+ $w->setOption($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
+