角度材料“md- chip”指令如何控制输入字段选择被聚焦的非芯片容器？

<md-chip>
  <md-input-container>
    <input type="text" id="myInputField">
  </md-input-container>
</md-chip>

import { Component, ViewChild, ElementRef } from '@angular/core';

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html',
  styleUrls: ['./example.component.css']
})
export class ExampleComponent {
  @ViewChild('myInputField') inputField: ElementRef;

  focusInputField() {
    this.inputField.nativeElement.focus();
  }
}

<md-chip (click)="focusInputField()">
  <md-input-container>
    <input type="text" id="myInputField">
  </md-input-container>
</md-chip>