TextInput组件能根据输入内容改成动态长度吗？

@State inputText: string = '';  
@State inputWidth: number = 350;  
controller: TextInputController = new TextInputController()  
build() {  
  Row() {  
    Column() {  
      TextInput({placeholder:'请输入文本',text:$$this.inputText,controller:this.controller})  
        .width(this.inputWidth+'px')  
        .onChange(()=>{  
          if(this.controller.getTextContentRect().width>200){  
            this.inputWidth = this.controller.getTextContentRect().width+150  
          }  
          else{  
            this.inputWidth = 350  
          }  
        })  
    }  
    .width('100%')  
  }  
  .height('100%')  
}