<?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_Sales
 * @copyright   Copyright (c) 2011 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */

/**
 * Item option model
 *
 * @method Mage_Sales_Model_Resource_Quote_Item_Option _getResource()
 * @method Mage_Sales_Model_Resource_Quote_Item_Option getResource()
 * @method int getItemId()
 * @method Mage_Sales_Model_Quote_Item_Option setItemId(int $value)
 * @method int getProductId()
 * @method Mage_Sales_Model_Quote_Item_Option setProductId(int $value)
 * @method string getCode()
 * @method Mage_Sales_Model_Quote_Item_Option setCode(string $value)
 * @method string getValue()
 * @method Mage_Sales_Model_Quote_Item_Option setValue(string $value)
 *
 * @category    Mage
 * @package     Mage_Sales
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_Sales_Model_Quote_Item_Option extends Mage_Core_Model_Abstract
    implements Mage_Catalog_Model_Product_Configuration_Item_Option_Interface
{
    protected $_item;
    protected $_product;

    /**
     * Initialize resource model
     */
    protected function _construct()
    {
        $this->_init('sales/quote_item_option');
    }

    /**
     * Checks that item option model has data changes
     *
     * @return boolean
     */
    protected function _hasModelChanged()
    {
        if (!$this->hasDataChanges()) {
            return false;
        }

        return $this->_getResource()->hasDataChanged($this);
    }

    /**
     * Set quote item
     *
     * @param   Mage_Sales_Model_Quote_Item $item
     * @return  Mage_Sales_Model_Quote_Item_Option
     */
    public function setItem($item)
    {
        $this->setItemId($item->getId());
        $this->_item = $item;
        return $this;
    }

    /**
     * Get option item
     *
     * @return Mage_Sales_Model_Quote_Item
     */
    public function getItem()
    {
        return $this->_item;
    }

    /**
     * Set option product
     *
     * @param   Mage_Catalog_Model_Product $product
     * @return  Mage_Sales_Model_Quote_Item_Option
     */
    public function setProduct($product)
    {
        $this->setProductId($product->getId());
        $this->_product = $product;
        return $this;
    }

    /**
     * Get option product
     *
     * @return Mage_Catalog_Model_Product
     */
    public function getProduct()
    {
        return $this->_product;
    }

    /**
     * Get option value
     *
     * @return mixed
     */
    public function getValue()
    {
        return $this->_getData('value');
    }

    /**
     * Initialize item identifier before save data
     *
     * @return Mage_Sales_Model_Quote_Item_Option
     */
    protected function _beforeSave()
    {
        if ($this->getItem()) {
            $this->setItemId($this->getItem()->getId());
        }
        return parent::_beforeSave();
    }

    /**
     * Clone option object
     *
     * @return Mage_Sales_Model_Quote_Item_Option
     */
    public function __clone()
    {
        $this->setId(null);
        $this->_item    = null;
        return $this;
    }
}
