<?php
/**
 * OpenMage
 *
 * 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 at https://opensource.org/license/osl-3-0-php
 *
 * @category   Mage
 * @package    Mage_Adminhtml
 * @copyright  Copyright (c) 2006-2020 Magento, Inc. (https://www.magento.com)
 * @copyright  Copyright (c) 2022-2023 The OpenMage Contributors (https://www.openmage.org)
 * @license    https://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */

/**
 * "Manage Coupons Codes" Tab
 *
 * @category   Mage
 * @package    Mage_Adminhtml
 */
class Mage_Adminhtml_Block_Promo_Quote_Edit_Tab_Coupons extends Mage_Adminhtml_Block_Text_List implements Mage_Adminhtml_Block_Widget_Tab_Interface
{
    /**
     * Prepare content for tab
     *
     * @return string
     */
    public function getTabLabel()
    {
        return Mage::helper('salesrule')->__('Manage Coupon Codes');
    }

    /**
     * Prepare title for tab
     *
     * @return string
     */
    public function getTabTitle()
    {
        return Mage::helper('salesrule')->__('Manage Coupon Codes');
    }

    /**
     * Returns status flag about this tab can be shown or not
     *
     * @return bool
     */
    public function canShowTab()
    {
        return $this->_isEditing();
    }

    /**
     * Returns status flag about this tab hidden or not
     *
     * @return bool
     */
    public function isHidden()
    {
        return !$this->_isEditing();
    }

    /**
     * Check whether we edit existing rule or adding new one
     *
     * @return bool
     */
    protected function _isEditing()
    {
        $priceRule = Mage::registry('current_promo_quote_rule');
        return !is_null($priceRule->getRuleId());
    }
}
