<?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) 2010 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */


/**
 * Catalog product gallery attribute
 *
 * @category   Mage
 * @package    Mage_Adminhtml
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_Adminhtml_Block_Catalog_Product_Helper_Form_Gallery extends Varien_Data_Form_Element_Abstract
{

    public function getElementHtml()
    {
        $html = $this->getContentHtml();
        //$html.= $this->getAfterElementHtml();
        return $html;
    }

    /**
     * Prepares content block
     *
     * @return string
     */
    public function getContentHtml()
    {

        /* @var $content Mage_Adminhtml_Block_Catalog_Product_Helper_Form_Gallery_Content */
        $content = Mage::getSingleton('core/layout')
            ->createBlock('adminhtml/catalog_product_helper_form_gallery_content');

        $content->setId($this->getHtmlId() . '_content')
            ->setElement($this);
        return $content->toHtml();
    }

    public function getLabel()
    {
        return '';
    }

    /**
     * Check "Use default" checkbox display availability
     *
     * @param Mage_Eav_Model_Entity_Attribute $attribute
     * @return bool
     */
    public function canDisplayUseDefault($attribute)
    {
        if (!$attribute->isScopeGlobal() && $this->getDataObject()->getStoreId()) {
            return true;
        }

        return false;
    }

    /**
     * Check default value usage fact
     *
     * @param Mage_Eav_Model_Entity_Attribute $attribute
     * @return bool
     */
    public function usedDefault($attribute)
    {
        $attributeCode = $attribute->getAttributeCode();
        $defaultValue = $this->getDataObject()->getAttributeDefaultValue($attributeCode);

        if (!$this->getDataObject()->getExistsStoreValueFlag($attributeCode)) {
            return true;
        } else if ($this->getValue() == $defaultValue && 
                   $this->getDataObject()->getStoreId() != $this->_getDefaultStoreId()) {
            return false;
        }
        if ($defaultValue === false && !$attribute->getIsRequired() && $this->getValue()) {
            return false;
        }
        return $defaultValue === false;
    }

    /**
     * Retrieve label of attribute scope
     *
     * GLOBAL | WEBSITE | STORE
     *
     * @param Mage_Eav_Model_Entity_Attribute $attribute
     * @return string
     */
    public function getScopeLabel($attribute)
    {
        $html = '';
        if (Mage::app()->isSingleStoreMode()) {
            return $html;
        }

        if ($attribute->isScopeGlobal()) {
            $html.= '<br/>[GLOBAL]';
        }
        elseif ($attribute->isScopeWebsite()) {
            $html.= '<br/>[WEBSITE]';
        }
        elseif ($attribute->isScopeStore()) {
            $html.= '<br/>[STORE VIEW]';
        }
        return $html;
    }

    /**
     * Retrieve data object related with form
     *
     * @return Mage_Catalog_Model_Product || Mage_Catalog_Model_Category
     */
    public function getDataObject()
    {
        return $this->getForm()->getDataObject();
    }

    /**
     * Retrieve attribute field name
     *
     *
     * @param Mage_Eav_Model_Entity_Attribute $attribute
     * @return string
     */
    public function getAttributeFieldName($attribute)
    {
        $name = $attribute->getAttributeCode();
        if ($suffix = $this->getForm()->getFieldNameSuffix()) {
            $name = $this->getForm()->addSuffixToName($name, $suffix);
        }
        return $name;
    }

    /**
     * Check readonly attribute
     *
     * @param Mage_Eav_Model_Entity_Attribute|string $attribute
     * @return boolean
     */
    public function getAttributeReadonly($attribute)
    {
        if (is_object($attribute)) {
            $attribute = $attribute->getAttributeCode();
        }

        if ($this->getDataObject()->isLockedAttribute($attribute)) {
            return true;
        }

        return false;
    }

    public function toHtml()
    {
        return '<tr><td class="value" colspan="3">' . $this->getElementHtml() . '</td></tr>';
    }

    /**
     * Default sore ID getter
     *
     * @return integer
     */
    protected function _getDefaultStoreId()
    {
        return Mage_Catalog_Model_Abstract::DEFAULT_STORE_ID;
    }
}
