HarmonyOS RichEditor可以支持多个文字整体删除吗？

@Entry  
@Component  
struct RichEditorPage {  
  controller: RichEditorController = new RichEditorController();  
  options: RichEditorOptions = { controller: this.controller };  
  private tagMap: string[] = ["搞笑", "话题", "asdasdasd"]  
  @State showTagSheet: boolean = false  
  private readonly tagColor: string = "#FF0000FF"  
  private readonly normalColor: string = "#FF000000"  
  @Builder tagSheet() {  
    Column() {  
      ForEach(this.tagMap, (item: string) => {  
        Text(item)  
          .fontSize(25)  
          .onClick(() => {  
            this.showTagSheet = false  
            let curIndex = this.controller.getCaretOffset()  
            this.controller.deleteSpans({start: curIndex - 1, end: curIndex})  
            this.controller.addTextSpan("@" + item, {  
              offset: curIndex - 1,  
              style: {  
                fontColor: this.tagColor  
              }  
            })  
            this.controller.addTextSpan(" ", {  
              offset: curIndex + item.length,  
              style: {  
                fontColor: this.normalColor,  
          }  
        })  
      })  
    Divider()  
  })  
}  
.width('100%')  
.height('100%')  
  }  
  getCurSpan(curIndex: number): RichEditorTextSpanResult | undefined {  
    let spans = this.controller.getSpans()  
    for (let i = 0; i < spans.length; i++) {  
      const textSpan = spans[i] as RichEditorTextSpanResult;  
      if (textSpan.textStyle == undefined) continue  
  let range = textSpan.spanPosition.spanRange  
  if (range[0] <= curIndex && range[1] >= curIndex) {  
    return textSpan  
  }  
}  
return undefined  
  }  
  build() {  
    RelativeContainer() {  
      RichEditor(this.options)  
        .aboutToIMEInput((value: RichEditorInsertValue) => {  
          if (value.insertValue === "@") {  
            this.showTagSheet = true  
          }  
          return true  
        })  
        .aboutToDelete((value: RichEditorDeleteValue) => {  
          let curTextSpan = this.getCurSpan(value.offset + 1)  
          if (curTextSpan && curTextSpan.textStyle.fontColor.toString() === this.tagColor.toString()) {  
            let spanRange = curTextSpan.spanPosition.spanRange  
            this.controller.deleteSpans({  
              start: spanRange[0],  
              end: spanRange[1]  
            })  
            return false  
          } else {  
            return true  
          }  
        })  
        .width('100%')  
        .height(200)  
        .backgroundColor(Color.White)  
        .id("rich_editor")  
    }  
    .backgroundColor(Color.Gray)  
    .bindSheet(this.showTagSheet, this.tagSheet(), {  
      shouldDismiss: () => {  
        this.showTagSheet = false  
      }  
    })  
    .height('100%')  
    .width('100%')  
  }  
}
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