HarmonyOS 如何禁止Swipe向某个index滑动

参考示例如下：

// xxx.ets
class MyDataSource implements IDataSource {
  private list: number[] = []

  constructor(list: number[]) {
    this.list = list
  }

  totalCount(): number {
    return this.list.length
  }

  getData(index: number): number {
    return this.list[index]
  }

  registerDataChangeListener(listener: DataChangeListener): void {
  }

  unregisterDataChangeListener() {
  }
}

@Entry
@Component
struct SwiperExample {
  private swiperController: SwiperController = new SwiperController()
  private data: MyDataSource = new MyDataSource([])
  @State flag: boolean = false //设置禁用组件滑动切换功能状态变量

  aboutToAppear(): void {
    let list: number[] = []
    for (let i = 1; i <= 10; i++) {
      list.push(i);
    }
    this.data = new MyDataSource(list)
  }

  build() {
    Column({ space: 5 }) {
      Swiper(this.swiperController) {
        LazyForEach(this.data, (item: string) => {
          Text(item.toString())
            .width('90%')
            .height(160)
            .backgroundColor(0xAFEEEE)
            .textAlign(TextAlign.Center)
            .fontSize(30)
        }, (item: string) => item)
      }
      .cachedCount(2)
      .index(1)
      .autoPlay(false)
      .interval(4000)
      .loop(true)
      .indicatorInteractive(true)
      .duration(1000)
      .itemSpace(0)
      // 设置禁用组件滑动切换功能
      .disableSwipe(this.flag)
      .effectMode(EdgeEffect.None)
      .indicator( // 设置圆点导航点样式
        new DotIndicator()
          .itemWidth(15)
          .itemHeight(15)
          .selectedItemWidth(15)
          .selectedItemHeight(15)
          .color(Color.Gray)
          .selectedColor(Color.Blue))
      .curve(Curve.Linear)
      .onChange((index: number) => {
        console.info(index.toString())
      })
      .onGestureSwipe((index: number, extraInfo: SwiperAnimationEvent) => {
        console.info("index: " + index)
        console.info("current offset: " + extraInfo.currentOffset)
        if (index === 1 && extraInfo.currentOffset > -1) {
          this.flag = true
        }
      })
      .onAnimationStart((index: number, targetIndex: number, extraInfo: SwiperAnimationEvent) => {

      })
      .onAnimationEnd((index: number, extraInfo: SwiperAnimationEvent) => {
        console.info("index: " + index)
        console.info("current offset: " + extraInfo.currentOffset)
        this.flag = false
      })
    }.width('100%')
    .margin({ top: 5 })
  }
}