<?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) 2014 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */

/**
 * Adminhtml grid item renderer number
 *
 * @category   Mage
 * @package    Mage_Adminhtml
 * @author     Magento Core Team <core@magentocommerce.com>
 */
class Mage_Adminhtml_Block_Widget_Grid_Column_Renderer_Number
    extends Mage_Adminhtml_Block_Widget_Grid_Column_Renderer_Abstract
{
    protected $_defaultWidth = 100;

    /**
     * Returns value of the row
     *
     * @param Varien_Object $row
     * @return mixed|string
     */
    protected function _getValue(Varien_Object $row)
    {
        $data = parent::_getValue($row);
        if (!is_null($data)) {
            $value = $data * 1;
            $sign = (bool)(int)$this->getColumn()->getShowNumberSign() && ($value > 0) ? '+' : '';
            if ($sign) {
                $value = $sign . $value;
            }
            return $value ? $value : '0'; // fixed for showing zero in grid
        }
        return $this->getColumn()->getDefault();
    }

    /**
     * Renders CSS
     *
     * @return string
     */
    public function renderCss()
    {
        return parent::renderCss() . ' a-right';
    }

}
