app/code/core/Mage/Rule/Block/Editable.php

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<?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_Rule
 * @copyright  Copyright (c) 2008 Irubin Consulting Inc. DBA Varien (http://www.varien.com)
 * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */


class Mage_Rule_Block_Editable extends Mage_Core_Block_Abstract
    implements Varien_Data_Form_Element_Renderer_Interface
{
    public function render(Varien_Data_Form_Element_Abstract $element)
    {
        $valueName = $element->getValueName();

        if ($valueName==='') {
            $valueName = '...';
        } else {
            $valueName = Mage::helper('core/string')->truncate($valueName, 30);
        }
        if ($element->getShowAsText()) {
            $html = ' <input type="hidden" class="hidden" id="'.$element->getHtmlId().'" name="'.$element->getName().'" value="'.$element->getValue().'"/> ';

            $html.= htmlspecialchars($valueName).'&nbsp;';
        } else {
            $html = ' <span class="rule-param"' . ($element->getParamId() ? ' id="' . $element->getParamId() . '"' : '') . '>';

            $html.= '<a href="javascript:void(0)" class="label">';

            $html.= htmlspecialchars($valueName);

            $html.= '</a><span class="element"> ';

            $html.= $element->getElementHtml();

            if ($element->getExplicitApply()) {
                $html.= ' <a href="javascript:void(0)" class="rule-param-apply"><img src="'.$this->getSkinUrl('images/rule_component_apply.gif').'" class="v-middle" alt="'.$this->__('Apply').'" title="'.$this->__('Apply').'" /></a> ';
            }

            $html.= '</span></span>&nbsp;';
        }
        return $html;
    }
}

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