<?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) 2012 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */

/**
 * Customer account form block
 *
 * @category   Mage
 * @package    Mage_Adminhtml
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_Adminhtml_Block_Cms_Page_Edit_Tab_Meta
    extends Mage_Adminhtml_Block_Widget_Form
    implements Mage_Adminhtml_Block_Widget_Tab_Interface
{
    public function __construct()
    {
        parent::__construct();
    }

    protected function _prepareForm()
    {
        /*
         * Checking if user have permissions to save information
         */
        if ($this->_isAllowedAction('save')) {
            $isElementDisabled = false;
        } else {
            $isElementDisabled = true;
        }

        $form = new Varien_Data_Form();

        $form->setHtmlIdPrefix('page_');

        $model = Mage::registry('cms_page');

        $fieldset = $form->addFieldset('meta_fieldset', array('legend' => Mage::helper('cms')->__('Meta Data'), 'class' => 'fieldset-wide'));

        $fieldset->addField('meta_keywords', 'textarea', array(
            'name' => 'meta_keywords',
            'label' => Mage::helper('cms')->__('Keywords'),
            'title' => Mage::helper('cms')->__('Meta Keywords'),
            'disabled'  => $isElementDisabled
        ));

        $fieldset->addField('meta_description', 'textarea', array(
            'name' => 'meta_description',
            'label' => Mage::helper('cms')->__('Description'),
            'title' => Mage::helper('cms')->__('Meta Description'),
            'disabled'  => $isElementDisabled
        ));

        Mage::dispatchEvent('adminhtml_cms_page_edit_tab_meta_prepare_form', array('form' => $form));

        $form->setValues($model->getData());

        $this->setForm($form);

        return parent::_prepareForm();
    }

    /**
     * Prepare label for tab
     *
     * @return string
     */
    public function getTabLabel()
    {
        return Mage::helper('cms')->__('Meta Data');
    }

    /**
     * Prepare title for tab
     *
     * @return string
     */
    public function getTabTitle()
    {
        return Mage::helper('cms')->__('Meta Data');
    }

    /**
     * Returns status flag about this tab can be showen or not
     *
     * @return true
     */
    public function canShowTab()
    {
        return true;
    }

    /**
     * Returns status flag about this tab hidden or not
     *
     * @return true
     */
    public function isHidden()
    {
        return false;
    }

    /**
     * Check permission for passed action
     *
     * @param string $action
     * @return bool
     */
    protected function _isAllowedAction($action)
    {
        return Mage::getSingleton('admin/session')->isAllowed('cms/page/' . $action);
    }
}