https://blog.wongcw.com/2021/05/19/%e8%8f%af%e7%82%bamateview%e7%84%a1%e7%b7%9a%e9%a1%af%e7%a4%ba%e5%99%a8%e9%a6%96%e7%99%bc%e4%ba%ae%e7%9b%b8%ef%bc%9a%e6%89%8b%e6%a9%9f%e7%a7%92%e8%ae%8a%e9%9b%bb%e8%85%a6%e9%a6%96%e5%89%b5smart-bar/