HarmonyOS 希望监听键盘高度，在键盘弹出后组件上移，键盘收起后组件恢复，并且可以自行控制避让高度

可参考如下示例：

//WebViewComponent.ets
import { IAdjustOffsetParams } from '../viewmodel/IAdjustOffsetParams'
// WebViewNode.ets
import web_webview from '@ohos.web.webview'
import { UIContext } from '@ohos.ArkUI.UIContext'
import { BuilderNode, FrameNode, NodeController } from '@ohos.ArkUI.node'
import WebViewComponent from '../view/WebViewComponent'
import { WebBuilderParmas } from '../viewmodel/WebBuilderParmas'
import { WebViewNodeUpdateParams } from '../viewmodel/WebViewNodeUpdateParams'

@Component
export default struct WebViewComponent {
  @Prop @Watch('onAdjustOffsetChange') adjustOffset: IAdjustOffsetParams | null

  onAdjustOffsetChange() {
    if(this.adjustOffset) {
      console.info(`TAG adjustOffset changed: x=${this.adjustOffset.x} y=${this.adjustOffset.y}`)
    } else {
      console.info(`TAG adjustOffset is null !`)
    }
  }

  build() {
    Row(){
      Text('Hello World')
        .fontSize(20)
        .fontColor(Color.Blue)
    }
    .backgroundColor(Color.White)
  }
}


@Builder
function webBuilder(params: WebBuilderParmas) {
  Column() {
    WebViewComponent({
      adjustOffset: params.adjustOffset
    })
  }
}

class MyNodeController extends NodeController {
  private rootNode: BuilderNode<[WebBuilderParmas]> | null = null;
  private wrapBuilder: WrappedBuilder<[WebBuilderParmas]> = wrapBuilder(webBuilder);

  makeNode(uiContext: UIContext): FrameNode | null {
    if (this.rootNode === null) {
      this.rootNode = new BuilderNode(uiContext);
      this.rootNode.build(this.wrapBuilder, { text: "This is a Text" })
    }
    return this.rootNode.getFrameNode();
  }


  updateNode(updateParams: WebViewNodeUpdateParams) {
    const params: WebBuilderParmas = {
      adjustOffset : updateParams.adjustOffset
    }
    console.info(`TAG updateNode: ${JSON.stringify(params)}`)

    this.rootNode?.update(params)
  }
}

@Entry
@Component
struct MainPage {
  controller: web_webview.WebviewController = new web_webview.WebviewController()
  private myNodeController: MyNodeController = new MyNodeController();
  private currX: number = 0;
  private currY: number = 0;

  build() {
    Column() {
      NodeContainer(this.myNodeController)

      Button('click to update')
        .onClick(() => {
          this.currX += 100;
          this.currY += 100;
          const updateParams : WebViewNodeUpdateParams = {
            adjustOffset: {
              x: this.currX,
              y: this.currY
            }
          }
          this.myNodeController.updateNode(updateParams)
        })

    }
  }
}
涉及的参数：
//IAdjustOffsetParams.ets
export interface IAdjustOffsetParams {
  x?: number;
  y?: number;
}

//WebBuilderParmas.ets

export interface WebBuilderParmas {
  adjustOffset: IAdjustOffsetParams;
}

// WebViewNodeUpdateParams.ets

export interface WebViewNodeUpdateParams {
  adjustOffset: IAdjustOffsetParams;
}
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