<?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)
 */

/**
 * System config translate inline fields backend model
 *
 * @category   Mage
 * @package    Mage_Adminhtml
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_Adminhtml_Model_System_Config_Backend_Translate extends Mage_Core_Model_Config_Data
{
    /**
     * Path to config node with list of caches
     *
     * @var string
     */
    const XML_PATH_INVALID_CACHES = 'dev/translate_inline/invalid_caches';

    /**
     * Set status 'invalidate' for blocks and other output caches
     *
     * @return Mage_Adminhtml_Model_System_Config_Backend_Translate
     */
    protected function _afterSave()
    {
        $types = array_keys(Mage::getStoreConfig(self::XML_PATH_INVALID_CACHES));
        if ($this->isValueChanged()) {
            Mage::app()->getCacheInstance()->invalidateType($types);
        }

        return $this;
    }
}