public static function getControlPositions()
    {
        return array(
            self::BOTTOM_CENTER,
            self::BOTTOM_LEFT,
            self::BOTTOM_RIGHT,
            self::LEFT_BOTTOM,
            self::LEFT_CENTER,
            self::LEFT_TOP,
            self::RIGHT_BOTTOM,
            self::RIGHT_CENTER,
            self::RIGHT_TOP,
            self::TOP_CENTER,
            self::TOP_LEFT,
            self::TOP_RIGHT,
        );
    }