HarmonyOS 鸿蒙Next 如何长按web中的文字弹出菜单栏

参考下面demo

// xxx.ets
import { webview } from '@kit.ArkWeb';
@Entry
@Component
struct WebComponent {
  controller: webview.WebviewController = new webview.WebviewController();
  @State menuOptionArray: Array = [
    {content: 'Apple', startIcon: $rawfile('img_0.png'), action: (selectedText) => {
      console.info('select info ' + selectedText.toString());
    }},
    {content: '香蕉', startIcon: $rawfile('img_0.png'), action: (selectedText) => {
      console.info('select info ' + selectedText.toString());
    }}
  ];
  build() {
    Column() {
      Web({ src: $rawfile("caidan.html"), controller: this.controller })
        .selectionMenuOptions(this.menuOptionArray)
        .onPageEnd(()=>{
          setTimeout(()=>{
            this.menuOptionArray=[
              {content: '111', startIcon: $rawfile('img_0.png'), action: (selectedText) => {
                console.info('select info ' + selectedText.toString());
              }},
              {content: '255', startIcon: $rawfile('img_0.png'), action: (selectedText) => {
                console.info('select info ' + selectedText.toString());
              }}
            ];
          },5000)
        })
    }
  }
}