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# You may distribute under the terms of either the GNU General Public License
# or the Artistic License (the same terms as Perl itself)
#
# (C) Paul Evans, 2011-2023 -- leonerd@leonerd.org.uk
use v5.20;
use warnings;
use Object::Pad 0.807;
package Tickit::SingleChildWidget 0.59;
class Tickit::SingleChildWidget;
inherit Tickit::ContainerWidget;
apply Tickit::WidgetRole::SingleChildContainer;
use Carp;
=head1 NAME
C<Tickit::SingleChildWidget> - abstract base class for widgets that contain a
single other widget
=head1 SYNOPSIS
TODO
=head1 DESCRIPTION
This subclass of L<Tickit::ContainerWidget> acts as an abstract base class for
widgets that contain exactly one other widget. It enforces that only one child
widget may be contained at any one time, and provides a convenient accessor to
obtain it.
=cut
=head1 CONSTRUCTOR
=cut
=head2 new
$widget = Tickit::SingleChildWidget->new( %args );
Constructs a new C<Tickit::SingleChildWidget> object.
=cut
ADJUST :params ( :$child = undef )
{
if( $child ) {
croak "The 'child' constructor argument to ${\ref $self} is no longer recognised; use ->set_child instead";
}
}
=head1 AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
=cut
0x55AA;
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