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package Tk::Dialog;
use vars qw($VERSION);
$VERSION = '3.017'; # $Id: //depot/Tk8/Tk/Dialog.pm#17$
# Dialog - a translation of `tk_dialog' from Tcl/Tk to TkPerl (based on
# John Stoffel's idea).
#
# Stephen O. Lidie, Lehigh University Computing Center. 94/12/27
# lusol@Lehigh.EDU
# Documentation after __END__
use Carp;
use strict;
require Tk::Toplevel;
use base qw(Tk::Toplevel);
Construct Tk::Widget 'Dialog';
sub Populate
{
# Dialog object constructor. Uses `new' method from base class
# to create object container then creates the dialog toplevel.
my($cw, $args) = @_;
$cw->SUPER::Populate($args);
my ($w_bitmap,$w_but,$pad1,$pad2);
my $buttons = delete $args->{'-buttons'};
$buttons = ['OK'] unless (defined $buttons);
my $default_button = delete $args->{-default_button};
$default_button = $buttons->[0] unless (defined $default_button);
# Create the Toplevel window and divide it into top and bottom parts.
$cw->{'selected_button'} = '';
my (@pl) = (-side => 'top', -fill => 'both');
($pad1, $pad2) =
([-padx => '3m', -pady => '3m'], [-padx => '3m', -pady => '2m']);
$cw->iconname('Dialog');
$cw->protocol('WM_DELETE_WINDOW' => sub {});
$cw->transient($cw->Parent->toplevel);
$cw->withdraw;
my $w_top = $cw->Frame(Name => 'top',-relief => 'raised', -borderwidth => 1);
my $w_bot = $cw->Frame(Name => 'bot',-relief => 'raised', -borderwidth => 1);
$w_top->pack(@pl);
$w_bot->pack(@pl);
# Fill the top part with the bitmap and message.
@pl = (-side => 'left');
$w_bitmap = $w_top->Label(Name => 'bitmap');
$w_bitmap->pack(@pl, @$pad1);
my $w_msg = $w_top->Label( -wraplength => '3i', -justify => 'left' );
$w_msg->pack(-side => 'right', -expand => 1, -fill => 'both', @$pad1);
# Create a row of buttons at the bottom of the dialog.
my($w_default_button, $bl) = (undef, '');
foreach $bl (@$buttons) {
$w_but = $w_bot->Button(
-text => $bl,
-command => [
sub {
$_[0]->{'selected_button'} = $_[1];
}, $cw, $bl,
]
);
if ($bl eq $default_button) {
$w_default_button = $w_bot->Frame(
-relief => 'sunken',
-borderwidth => 1
);
$w_but->raise($w_default_button);
$w_default_button->pack(@pl, -expand => 1, @$pad2);
$w_but->pack(-in => $w_default_button, -padx => '2m',
-pady => '2m');
$cw->bind(
'<Return>' => [
sub {
$_[1]->flash;
$_[2]->{'selected_button'} = $_[3];
}, $w_but, $cw, $bl,
]
);
} else {
$w_but->pack(@pl, -expand => 1, @$pad2);
}
} # forend all buttons
$cw->Advertise(message => $w_msg);
$cw->Advertise(bitmap => $w_bitmap );
$cw->{'default_button'} = $w_default_button;
$cw->ConfigSpecs(
-image => ['bitmap',undef,undef,undef],
-bitmap => ['bitmap',undef,undef,undef],
-fg => ['ADVERTISED','foreground','Foreground','black'],
-foreground => ['ADVERTISED','foreground','Foreground','black'],
-bg => ['DESCENDANTS','background','Background',undef],
-background => ['DESCENDANTS','background','Background',undef],
-font => ['message','font','Font', '-*-Times-Medium-R-Normal--*-180-*-*-*-*-*-*'],
DEFAULT => ['message',undef,undef,undef]
);
$cw->Delegates('Construct' => $w_top);
} # end Dialog constructor
sub Show {
# Dialog object public method - display the dialog.
my ($cw, $grab_type) = @_;
croak "Dialog: `Show' method requires at least 1 argument"
if scalar @_ < 1 ;
my $old_focus = $cw->focusSave;
my $old_grab = $cw->grabSave;
# Update all geometry information, center the dialog in the display
# and deiconify it
$cw->Popup();
# set a grab and claim the focus.
if (defined $grab_type && length $grab_type) {
$cw->grab($grab_type);
} else {
$cw->grab;
}
$cw->waitVisibility;
$cw->update;
if (defined $cw->{'default_button'})
{
$cw->{'default_button'}->focus;
}
else
{
$cw->focus;
}
# Wait for the user to respond, restore the focus and grab, withdraw
# the dialog and return the label of the selected button.
$cw->waitVariable(\$cw->{'selected_button'});
$cw->grabRelease;
$cw->withdraw;
&$old_focus;
&$old_grab;
return $cw->{'selected_button'};
} # end Dialog Show method
1;
__END__
=cut
|
