<?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)
 */

/**
 * Product form image field helper
 *
 * @category   Mage
 * @package    Mage_Adminhtml
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_Adminhtml_Block_Catalog_Product_Helper_Form_Image extends Varien_Data_Form_Element_Image
{
    protected function _getUrl()
    {
        $url = false;
        if ($this->getValue()) {
            $url = Mage::getBaseUrl('media').'catalog/product/'. $this->getValue();
        }
        return $url;
    }
    
    protected function _getDeleteCheckbox()
    {
        $html = '';
        if ($attribute = $this->getEntityAttribute()) {
            if (!$attribute->getIsRequired()) {
                $html.= parent::_getDeleteCheckbox();
            }
            else {
                $html.= '<input value="'.$this->getValue().'" id="'.$this->getHtmlId().'_hidden" type="hidden" class="required-entry" />';
                $html.= '<script type="text/javascript">
                    syncOnchangeValue(\''.$this->getHtmlId().'\', \''.$this->getHtmlId().'_hidden\');
                </script>';
            }
        }
        else {
            $html.= parent::_getDeleteCheckbox();
        }
        return $html;
    }
}