public static function htmlClass($glue='-')
	{
		$parts = [
			$parts[] = Yii::$app->controller->id,
			$parts[] = Yii::$app->controller->action->id,
		];

		if (Yii::$app->module !== null) {
			array_unshift($parts, Yii::$app->module->id);
		}

		return implode($glue, $parts);
	}