<?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_CatalogInventory
 * @copyright  Copyright (c) 2006-2015 X.commerce, Inc. (http://www.magento.com)
 * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */


/**
 * Product qty increments block
 *
 * @category   Mage
 * @package    Mage_CatalogInventory
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_CatalogInventory_Block_Qtyincrements extends Mage_Core_Block_Template
{
    /**
     * Qty Increments cache
     *
     * @var float|false
     */
    protected $_qtyIncrements;

    /**
     * Retrieve current product object
     *
     * @return Mage_Catalog_Model_Product
     */
    protected function _getProduct()
    {
        return Mage::registry('current_product');
    }

    /**
     * Retrieve current product name
     *
     * @return string
     */
    public function getProductName()
    {
        return $this->_getProduct()->getName();
    }

    /**
     * Retrieve product qty increments
     *
     * @return float|false
     */
    public function getProductQtyIncrements()
    {
        if ($this->_qtyIncrements === null) {
            $this->_qtyIncrements = $this->_getProduct()->getStockItem()->getQtyIncrements();
            if (!$this->_getProduct()->isSaleable()) {
                $this->_qtyIncrements = false;
            }
        }
        return $this->_qtyIncrements;
    }

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