<?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@magento.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.magento.com for more information.
 *
 * @category    Mage
 * @package     Mage_Checkout
 * @copyright  Copyright (c) 2006-2016 X.commerce, Inc. and affiliates (http://www.magento.com)
 * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */

/**
 * Shopping cart item render block
 *
 * @category    Mage
 * @package     Mage_Checkout
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_Checkout_Block_Cart_Item_Renderer_Grouped extends Mage_Checkout_Block_Cart_Item_Renderer
{
    const GROUPED_PRODUCT_IMAGE = 'checkout/cart/grouped_product_image';
    const USE_PARENT_IMAGE      = 'parent';

    /**
     * Get item grouped product
     *
     * @return Mage_Catalog_Model_Product
     */
    public function getGroupedProduct()
    {
        $option = $this->getItem()->getOptionByCode('product_type');
        if ($option) {
            return $option->getProduct();
        }
        return $this->getProduct();
    }

    /**
     * Get product thumbnail image
     *
     * @return Mage_Catalog_Model_Product_Image
     */
    public function getProductThumbnail()
    {
        $product = $this->getProduct();
        if (!$product->getData('thumbnail')
            ||($product->getData('thumbnail') == 'no_selection')
            || (Mage::getStoreConfig(self::GROUPED_PRODUCT_IMAGE) == self::USE_PARENT_IMAGE)) {
            $product = $this->getGroupedProduct();
        }
        return $this->helper('catalog/image')->init($product, 'thumbnail');
    }

    /**
     * Prepare item html
     *
     * This method uses renderer for real product type
     *
     * @return string
     */
    protected function _toHtml()
    {
        $renderer = $this->getRenderedBlock()->getItemRenderer($this->getItem()->getRealProductType());
        $renderer->setItem($this->getItem());
//        $renderer->overrideProductUrl($this->getProductUrl());
        $renderer->overrideProductThumbnail($this->getProductThumbnail());
        $rendererHtml = $renderer->toHtml();
//        $renderer->overrideProductUrl(null);
        $renderer->overrideProductThumbnail(null);
        return $rendererHtml;
    }

    /**
     * Retrieve block cache tags
     *
     * @return array
     */
    public function getCacheTags()
    {
        return array_merge(parent::getCacheTags(), $this->getGroupedProduct()->getCacheIdTags());
    }
}
