如何在dojo2中获取窗口小部件实例和调用窗口小部件的功能

Question

I create a dojo app with following render function. ... protected render() {

    let zombie = w(Zombie,{}); //zombie has a function walk();

    return v('div', [
        v('div',{
            style: "position: relative;height:500px;"
        },[
            zombie
        ])
    ])
}

...

And Zombie widget has a walk function.how and where can I call it from App?

Answer 1

We actually can't call the child widget method, however we can call parent widget method from child widget by calling callbackFunction we passed in below code.

export default class DemoWidget extends WidgetBase {
  protected callbackFunction() {
    console.log("callbackFunction");
  }

  protected render() { 
    let zombie = w(Zombie,{
      callbackFunction: this.callbackFunction
     }); //zombie has a function walk(); 
    return v('div', 
         [ v('div',{ style: "position: relative;height:500px;" },
         [ zombie ]) ]) 
    }
  }
}