<?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)
 */


/**
 * Clone model for media images related config fields
 *
 * @category   Mage
 * @package    Mage_Adminhtml
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_Adminhtml_Model_System_Config_Clone_Media_Image extends Mage_Core_Model_Config_Data
{

    /**
     * Get fields prefixes
     *
     * @return array
     */
    public function getPrefixes()
    {
        //$entityType = Mage::getModel('eav/entity_type');
        /* @var $entityType Mage_Eav_Model_Entity_Type */
        //$entityTypeId = $entityType->loadByCode('catalog_product')->getEntityTypeId();

        // use cached eav config
        $entityTypeId = Mage::getSingleton('eav/config')->getEntityType(Mage_Catalog_Model_Product::ENTITY)->getId();

        /* @var $collection Mage_Catalog_Model_Resource_Eav_Mysql4_Product_Attribute_Collection */
        $collection = Mage::getResourceModel('catalog/product_attribute_collection');
        $collection->setEntityTypeFilter($entityTypeId);
        $collection->setFrontendInputTypeFilter('media_image');

        $prefixes = array();

        foreach ($collection as $attribute) {
            /* @var $attribute Mage_Eav_Model_Entity_Attribute */
            $prefixes[] = array(
                'field' => $attribute->getAttributeCode() . '_',
                'label' => $attribute->getFrontend()->getLabel(),
            );
        }

        return $prefixes;
    }

}