public function getHtmlOne($params = array(), $attrs = '')
 {
     if ($this->getParameter('input_height') <= 1) {
         return parent::getHtmlOne($params, $attrs);
     }
     $value = isset($params['value']) ? $params['value'] : '';
     return '<textarea ' . $attrs . ' name="' . $this->getHTMLName($params) . '">' . htmlspecialchars($value) . '</textarea>';
 }