# Copyright (c) 2008 bivio Software, Inc.  All Rights Reserved.
#
# Visit http://www.bivio.biz for more info.
# 
# This library is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 2.1 of the
# License, or (at your option) any later version.
# 
# This library is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
# 
# You should have received a copy of the GNU Lesser General Public
# License along with this library;  If not, you may get a copy from:
# http://www.opensource.org/licenses/lgpl-license.html
# 
# $Id: Cond.pm,v 1.2 2008/11/07 22:16:26 nagler Exp $
package Bivio::UI::Widget::Cond;
use strict;
use Bivio::Base 'Widget.LogicalOpBase';

our($VERSION) = sprintf('%d.%02d', q$Revision: 1.2 $ =~ /\d+/g);

sub initialize {
    my($self) = @_;
    my(@res) = shift->SUPER::initialize(@_);
    $self->die($self->get('values'), undef, 'number of elements must be even')
	unless @{$self->get('values')} % 2 == 0;
    return @res;
}

sub render {
    my($self, $source, $buffer) = @_;
    my($done) = 0;
    $self->do_by_two(
	sub {
	    my($cond, $body, $index) = @_;
	    return 1
		unless $self->render_simple_value($cond, $source);
	    $self->render_value($index, $body, $source, $buffer);
	    return 0;
	},
	$self->get('values'),
    );
    return;
}

1;