<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    Mage
 * @package     Mage_Adminhtml
 * @copyright   Copyright (c) 2012 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */

/**
 * Checkbox grid column filter
 *
 * @category   Mage
 * @package    Mage_Adminhtml
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_Adminhtml_Block_Widget_Grid_Column_Filter_Checkbox extends Mage_Adminhtml_Block_Widget_Grid_Column_Filter_Select
{
    public function getHtml()
    {
        return '<span class="head-massaction">' . parent::getHtml() . '</span>';
    }

    protected function _getOptions()
    {
        return array(
            array(
                'label' => Mage::helper('adminhtml')->__('Any'),
                'value' => ''
            ),
            array(
                'label' => Mage::helper('adminhtml')->__('Yes'),
                'value' => 1
            ),
            array(
                'label' => Mage::helper('adminhtml')->__('No'),
                'value' => 0
            ),
        );
    }

    public function getCondition()
    {
        if ($this->getValue()) {
            return $this->getColumn()->getValue();
        }
        else {
            return array(
                array('neq'=>$this->getColumn()->getValue()),
                array('is'=>new Zend_Db_Expr('NULL'))
            );
        }
        //return array('like'=>'%'.$this->getValue().'%');
    }
}
