/app/code/core/Mage/Catalog/Block/Product/View.php

<?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_Catalog

 * @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)

 */





/**

 * Product View block

 *

 * @category Mage

 * @package  Mage_Catalog

 * @module   Catalog

 * @author   Magento Core Team <core@magentocommerce.com>

 */

class Mage_Catalog_Block_Product_View extends Mage_Catalog_Block_Product_Abstract

{

    /**

     * Default MAP renderer type

     *

     * @var string

     */

    protected $_mapRenderer = 'msrp_item';



    /**

     * Add meta information from product to head block

     *

     * @return Mage_Catalog_Block_Product_View

     */

    protected function _prepareLayout()

    {

        $this->getLayout()->createBlock('catalog/breadcrumbs');

        $headBlock = $this->getLayout()->getBlock('head');

        if ($headBlock) {

            $product = $this->getProduct();

            $title = $product->getMetaTitle();

            if ($title) {

                $headBlock->setTitle($title);

            }

            $keyword = $product->getMetaKeyword();

            $currentCategory = Mage::registry('current_category');

            if ($keyword) {

                $headBlock->setKeywords($keyword);

            } elseif($currentCategory) {

                $headBlock->setKeywords($product->getName());

            }

            $description = $product->getMetaDescription();

            if ($description) {

                $headBlock->setDescription( ($description) );

            } else {

                $headBlock->setDescription(Mage::helper('core/string')->substr($product->getDescription(), 0, 255));

            }

            if ($this->helper('catalog/product')->canUseCanonicalTag()) {

                $params = array('_ignore_category'=>true);

                $headBlock->addLinkRel('canonical', $product->getUrlModel()->getUrl($product, $params));

            }

        }



        return parent::_prepareLayout();

    }



    /**

     * Retrieve current product model

     *

     * @return Mage_Catalog_Model_Product

     */

    public function getProduct()

    {

        if (!Mage::registry('product') && $this->getProductId()) {

            $product = Mage::getModel('catalog/product')->load($this->getProductId());

            Mage::register('product', $product);

        }

        return Mage::registry('product');

    }



    /**

     * Check if product can be emailed to friend

     *

     * @return bool

     */

    public function canEmailToFriend()

    {

        $sendToFriendModel = Mage::registry('send_to_friend_model');

        return $sendToFriendModel && $sendToFriendModel->canEmailToFriend();

    }



    /**

     * Retrieve url for direct adding product to cart

     *

     * @param Mage_Catalog_Model_Product $product

     * @param array $additional

     * @return string

     */

    public function getAddToCartUrl($product, $additional = array())

    {

        if ($this->hasCustomAddToCartUrl()) {

            return $this->getCustomAddToCartUrl();

        }



        if ($this->getRequest()->getParam('wishlist_next')){

            $additional['wishlist_next'] = 1;

        }



        $addUrlKey = Mage_Core_Controller_Front_Action::PARAM_NAME_URL_ENCODED;

        $addUrlValue = Mage::getUrl('*/*/*', array('_use_rewrite' => true, '_current' => true));

        $additional[$addUrlKey] = Mage::helper('core')->urlEncode($addUrlValue);



        return $this->helper('checkout/cart')->getAddUrl($product, $additional);

    }



    /**

     * Get JSON encoded configuration array which can be used for JS dynamic

     * price calculation depending on product options

     *

     * @return string

     */

    public function getJsonConfig()

    {

        $config = array();

        if (!$this->hasOptions()) {

            return Mage::helper('core')->jsonEncode($config);

        }



        $_request = Mage::getSingleton('tax/calculation')->getRateRequest(false, false, false);

        /* @var $product Mage_Catalog_Model_Product */

        $product = $this->getProduct();

        $_request->setProductClassId($product->getTaxClassId());

        $defaultTax = Mage::getSingleton('tax/calculation')->getRate($_request);



        $_request = Mage::getSingleton('tax/calculation')->getRateRequest();

        $_request->setProductClassId($product->getTaxClassId());

        $currentTax = Mage::getSingleton('tax/calculation')->getRate($_request);



        $_regularPrice = $product->getPrice();

        $_finalPrice = $product->getFinalPrice();

        $_priceInclTax = Mage::helper('tax')->getPrice($product, $_finalPrice, true);

        $_priceExclTax = Mage::helper('tax')->getPrice($product, $_finalPrice);

        $_tierPrices = array();

        $_tierPricesInclTax = array();

        foreach ($product->getTierPrice() as $tierPrice) {

            $_tierPrices[] = Mage::helper('core')->currency($tierPrice['website_price'], false, false);

            $_tierPricesInclTax[] = Mage::helper('core')->currency(

                Mage::helper('tax')->getPrice($product, (int)$tierPrice['website_price'], true),

                false, false);

        }

        $config = array(

            'productId'           => $product->getId(),

            'priceFormat'         => Mage::app()->getLocale()->getJsPriceFormat(),

            'includeTax'          => Mage::helper('tax')->priceIncludesTax() ? 'true' : 'false',

            'showIncludeTax'      => Mage::helper('tax')->displayPriceIncludingTax(),

            'showBothPrices'      => Mage::helper('tax')->displayBothPrices(),

            'productPrice'        => Mage::helper('core')->currency($_finalPrice, false, false),

            'productOldPrice'     => Mage::helper('core')->currency($_regularPrice, false, false),

            'priceInclTax'        => Mage::helper('core')->currency($_priceInclTax, false, false),

            'priceExclTax'        => Mage::helper('core')->currency($_priceExclTax, false, false),

            /**

             * @var skipCalculate

             * @deprecated after 1.5.1.0

             */

            'skipCalculate'       => ($_priceExclTax != $_priceInclTax ? 0 : 1),

            'defaultTax'          => $defaultTax,

            'currentTax'          => $currentTax,

            'idSuffix'            => '_clone',

            'oldPlusDisposition'  => 0,

            'plusDisposition'     => 0,

            'plusDispositionTax'  => 0,

            'oldMinusDisposition' => 0,

            'minusDisposition'    => 0,

            'tierPrices'          => $_tierPrices,

            'tierPricesInclTax'   => $_tierPricesInclTax,

        );



        $responseObject = new Varien_Object();

        Mage::dispatchEvent('catalog_product_view_config', array('response_object'=>$responseObject));

        if (is_array($responseObject->getAdditionalOptions())) {

            foreach ($responseObject->getAdditionalOptions() as $option=>$value) {

                $config[$option] = $value;

            }

        }



        return Mage::helper('core')->jsonEncode($config);

    }



    /**

     * Return true if product has options

     *

     * @return bool

     */

    public function hasOptions()

    {

        if ($this->getProduct()->getTypeInstance(true)->hasOptions($this->getProduct())) {

            return true;

        }

        return false;

    }



    /**

     * Check if product has required options

     *

     * @return bool

     */

    public function hasRequiredOptions()

    {

        return $this->getProduct()->getTypeInstance(true)->hasRequiredOptions($this->getProduct());

    }



    /**

     * Define if setting of product options must be shown instantly.

     * Used in case when options are usually hidden and shown only when user

     * presses some button or link. In editing mode we better show these options

     * instantly.

     *

     * @return bool

     */

    public function isStartCustomization()

    {

        return $this->getProduct()->getConfigureMode() || Mage::app()->getRequest()->getParam('startcustomization');

    }



    /**

     * Get default qty - either as preconfigured, or as 1.

     * Also restricts it by minimal qty.

     *

     * @param null|Mage_Catalog_Model_Product $product

     * @return int|float

     */

    public function getProductDefaultQty($product = null)

    {

        if (!$product) {

            $product = $this->getProduct();

        }



        $qty = $this->getMinimalQty($product);

        $config = $product->getPreconfiguredValues();

        $configQty = $config->getQty();

        if ($configQty > $qty) {

            $qty = $configQty;

        }



        return $qty;

    }

}