# Copyright (c) 1999-2009 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: Radio.pm,v 2.10 2011/08/12 15:25:41 moeller Exp $
package Bivio::UI::HTML::Widget::Radio;
use strict;
use Bivio::Base 'HTMLWidget.Checkbox';

our($VERSION) = sprintf('%d.%02d', q$Revision: 2.10 $ =~ /\d+/g);
my($_A) = b_use('IO.Alert');
my($_HTML) = b_use('Bivio.HTML');

sub initialize {
    my($self) = @_;

    if ($self->unsafe_get('value') && ! $self->unsafe_get('on_value')) {
	$_A->warn_deprecated('"value" deprecated, use "on_value" attribute');
	$self->put(on_value => $self->get('value'));
    }
    $self->initialize_attr('on_value');
    $self->initialize_attr(TYPE => 'radio');
    return shift->SUPER::initialize(@_);
}

sub internal_input_base_render_attrs {
    my($self, $form, $field, $source, $buffer) = @_;
    shift->SUPER::internal_input_base_render_attrs(@_);
    my($value) = _on_value($self, $source);
    $value = ref($value)
	? $value->to_html($value)
 	: $_HTML->escape($value);
    $$buffer .= qq{ value="$value"};
    return;
}

sub internal_is_checked {
    my($self, $form, $field, $source) = @_;
    return _on_value($self, $source)
	eq $form->get_field_type($field)->to_html($form->get($field))
	    ? 1 : 0;
}

sub internal_new_args {
    return shift->internal_compute_new_args([qw(field on_value label)], \@_);
}

sub internal_want_multi_check_handler {
    return 0;
}

sub _on_value {
    my($self, $source) = @_;
    return UNIVERSAL::isa($self->get('on_value'), 'Bivio::Type::Enum')
	? $self->get('on_value')->to_html($self->get('on_value'))
	: ${$self->render_attr('on_value', $source)};
}

1;