希望 search bar 增加 onFocus 回调

[TimonPeng]

Do you want to request a feature or report a bug (建议还是bug) ?

建议

What is the current behavior? (现有状况)

无法获取是否处于输入状态。

What is the expected behavior? （应有状况）

希望和小程序一样，增加 onFocus 回调

Which versions of React-weui, weui, and which OS and device are affected by this issue? (React-weui版本 weui版本 机型和系统)

"react-weui": "1.0.3", "weui": "1.1.2"