HarmonyOS RichEditor如何控制输入状态

参考demo:

@Entry
@Component
struct etPage {
  controller: RichEditorController = new RichEditorController()
  controller1: TextInputController = new TextInputController()
  needFocusKey: string = 'RichEditor'
  @State textFlag: string = "TextFlag";

  build() {
    Column() {
      RichEditor({ controller: this.controller })
        .key(this.needFocusKey)
        .align(Alignment.TopStart)
        .height(100)
        .borderWidth(1)
        .borderColor(Color.Red)

        .width("100%")


      Button('点我获取焦点').onClick(() => {
        console.info(this.needFocusKey)
        focusControl.requestFocus(this.needFocusKey)
      })
      Button('点我失去焦点').onClick(() => {
        focusControl.requestFocus('button')
      })
      Button().width(0).height(0).key('button')
    }
    .width('100%')
    .height('100%')
  }
}

focusControl焦点控制模块参考文档： https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/ts-universal-attributes-focus-V5