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#
# DialogBox is similar to Dialog except that it allows any widget
# in the top frame. Widgets can be added with the add method. Currently
# there exists no way of deleting a widget once it has been added.
package Tk::DialogBox;
use strict;
use Carp;
use vars qw($VERSION);
$VERSION = '4.015'; # was: sprintf '4.%03d', q$Revision: #13 $ =~ /\D(\d+)\s*$/;
use base qw(Tk::Toplevel);
Tk::Widget->Construct('DialogBox');
sub Populate {
my ($cw, $args) = @_;
$cw->SUPER::Populate($args);
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;
my $cancel_button = delete $args->{'-cancel_button'};
if (!$cancel_button && @$buttons == 1) {
$cancel_button = $buttons->[0];
}
$cw->{'selected_button'} = '';
$cw->transient($cw->Parent->toplevel);
$cw->withdraw;
if ($cancel_button) {
$cw->protocol('WM_DELETE_WINDOW' => sub { $cw->{'cancel_button'}->invoke });
} else {
$cw->protocol('WM_DELETE_WINDOW' => sub { $cw->{'selected_button'} = undef });
}
# Make sure waitVariable exits if a waiting dialog is destroyed
$cw->OnDestroy(sub { $cw->{'selected_button'} = $cw->{'selected_button'} });
# create the two frames
my $top = $cw->Component('Frame', 'top');
$top->configure(-relief => 'raised', -bd => 1) unless $Tk::platform eq 'MSWin32';
my $bot = $cw->Component('Frame', 'bottom');
$bot->configure(-relief => 'raised', -bd => 1) unless $Tk::platform eq 'MSWin32';
$bot->pack(qw/-side bottom -fill both -ipady 3 -ipadx 3/);
$top->pack(qw/-side top -fill both -ipady 3 -ipadx 3 -expand 1/);
# create a row of buttons in the bottom.
my $bl; # foreach my $var: perl > 5.003_08
foreach $bl (@$buttons)
{
my $b = $bot->Button(-text => $bl, -command => sub { $cw->{'selected_button'} = "$bl" } );
$b->bind('<Return>' => [ $b, 'Invoke']);
$cw->Advertise("B_$bl" => $b);
if ($Tk::platform eq 'MSWin32')
{
$b->configure(-width => 10, -pady => 0);
}
if ($bl eq $default_button) {
my $db = $bot->Frame(-relief => 'sunken', -bd => 1);
$b->raise($db);
$b->pack(-in => $db, -padx => '2', -pady => '2');
$db->pack(-side => 'left', -expand => 1, -padx => 1, -pady => 1);
$cw->{'default_button'} = $b;
$cw->bind('<Return>' => [ $b, 'Invoke']);
} else {
$b->pack(-side => 'left', -expand => 1, -padx => 1, -pady => 1);
}
if (defined $cancel_button && $bl eq $cancel_button) {
$cw->{'cancel_button'} = $b;
}
}
if (defined $default_button && !$cw->{'default_button'}) {
warn "Default button `$default_button' does not exist.\n";
}
if (defined $cancel_button && !$cw->{'cancel_button'}) {
warn "Cancel button `$cancel_button' does not exist.\n";
}
$cw->ConfigSpecs(-command => ['CALLBACK', undef, undef, undef ],
-foreground => ['DESCENDANTS', 'foreground','Foreground', 'black'],
-background => ['DESCENDANTS', 'background','Background', undef],
-focus => ['PASSIVE', undef, undef, undef],
-showcommand => ['CALLBACK', undef, undef, undef],
);
$cw->Delegates('Construct',$top);
}
sub add {
my ($cw, $wnam, @args) = @_;
my $w = $cw->Subwidget('top')->$wnam(@args);
$cw->Advertise("\L$wnam" => $w);
return $w;
}
sub Wait
{
my $cw = shift;
$cw->Callback(-showcommand => $cw);
$cw->waitVariable(\$cw->{'selected_button'});
$cw->grabRelease if Tk::Exists($cw);
$cw->withdraw if Tk::Exists($cw);
$cw->Callback(-command => $cw->{'selected_button'});
}
sub Show {
croak 'DialogBox: "Show" method requires at least 1 argument'
if scalar @_ < 1;
my $cw = shift;
my ($grab) = @_;
my $old_focus = $cw->focusSave;
my $old_grab = $cw->grabSave;
shift if defined $grab && length $grab && ($grab =~ /global/);
$cw->Popup(@_);
Tk::catch {
if (defined $grab && length $grab && ($grab =~ /global/)) {
$cw->grabGlobal;
} else {
$cw->grab;
}
};
if (my $focusw = $cw->cget(-focus)) {
$focusw->focus;
} elsif (defined $cw->{'default_button'}) {
$cw->{'default_button'}->focus;
} else {
$cw->focus;
}
$cw->Wait;
&$old_focus;
&$old_grab;
return $cw->{'selected_button'};
}
sub Exit
{
my $cw = shift;
#kill the dialogbox, by faking a 'DONE'
$cw->{'selected_button'} = $cw->{'default_button'}->cget(-text);
}
1;
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