Engage with a feature that is currently displayed in a separate window

Question

Engage with a feature that is currently displayed in a separate window

I'm working on a project that requires me to display 2 different components in separate browser windows. I've tried opening two windows and displaying the components, but now I'm wondering if there's a way for a component in one window to interact with another component in the second window.

I attempted to create a Subject in a Service, but when I try to subscribe to this Subject in the component of the other window, it doesn't seem to work. Here is an example of what I have done:

export class MyService {
  public navigationTrigger: Subject<NavigationParams> = new Subject();

  constructor(private _http: Http) {
    this.navigationTrigger.next(params);
  }
}

And in the component, I subscribe to it like this:

this.watsonService.navigationTrigger.subscribe((navigation) => {
   this.updateNavigation(navigation); 
});

Unfortunately, this approach does not seem to be achieving the desired result. I am still unsure how to proceed in order to make this interaction between components in separate windows possible.

javascript angular typescript angular-components

Answer 1

Answer №1

When it comes to real-time communication, using a Subject may not be the best option as it is limited to a single Window's scope.

For effective communication between two different users, WebSockets would be more suitable. However, if it involves the same user, localStorage can be utilized.

Sending Data:

    localStorage.setItem("someKey", "someValue");

Receiving Data:

    window.addEventListener('storage', storageEventHandler, false);

    function storageEventHandler(evt) {
        alert("storage event called key: " + evt.key);
    }

To enhance this process further, you can encapsulate it within an Observable. Here's an example for reference:

    Rx.Observable.create(observer => {
     window.addEventListener('storage', storageEventHandler, false);

     function storageEventHandler(evt) {
         alert("storage event called key: " + evt.key);
         observer.onNext(evt);
     }
     // todo: return unsubscribe function which will remove that eventListener

});

Answer 2

When it comes to real-time communication, using a Subject may not be the best option as it is limited to a single Window's scope.

For effective communication between two different users, WebSockets would be more suitable. However, if it involves the same user, localStorage can be utilized.

Sending Data:

    localStorage.setItem("someKey", "someValue");

Receiving Data:

    window.addEventListener('storage', storageEventHandler, false);

    function storageEventHandler(evt) {
        alert("storage event called key: " + evt.key);
    }

To enhance this process further, you can encapsulate it within an Observable. Here's an example for reference:

    Rx.Observable.create(observer => {
     window.addEventListener('storage', storageEventHandler, false);

     function storageEventHandler(evt) {
         alert("storage event called key: " + evt.key);
         observer.onNext(evt);
     }
     // todo: return unsubscribe function which will remove that eventListener

});

Answer 3

Answer №2

David's answer above is effective, especially considering Angular 2's versatility in running on various platforms beyond just web browsers. In cases where objects like window are not readily available, it's recommended to wrap them and inject them using dependency injection. This allows for flexibility in changing the object instance based on the application environment.

import { WindowRef } from './WindowRef';
@Component({...})
class MyComponent {
    constructor(private winRef: WindowRef) {
        // accessing the native window object
        console.log('Native window object:', winRef.nativeWindow);
     }
}

To wrap window in an Angular 2 service, a simple solution involves creating an ES6 class and annotating it with @Injectable.

import { Injectable } from '@angular/core';
function _window() : any {
   // accessing the global browser window object
   return window;
}
@Injectable()
export class WindowRef {
   get nativeWindow() : any {
      return _window();
   }
}

Don't forget to register WindowRef as a provider:

 @NgModule({
    ...
    providers: [ WindowRef ]
 })
 export class AppModule{}

Answer 4

David's answer above is effective, especially considering Angular 2's versatility in running on various platforms beyond just web browsers. In cases where objects like window are not readily available, it's recommended to wrap them and inject them using dependency injection. This allows for flexibility in changing the object instance based on the application environment.

import { WindowRef } from './WindowRef';
@Component({...})
class MyComponent {
    constructor(private winRef: WindowRef) {
        // accessing the native window object
        console.log('Native window object:', winRef.nativeWindow);
     }
}

To wrap window in an Angular 2 service, a simple solution involves creating an ES6 class and annotating it with @Injectable.

import { Injectable } from '@angular/core';
function _window() : any {
   // accessing the global browser window object
   return window;
}
@Injectable()
export class WindowRef {
   get nativeWindow() : any {
      return _window();
   }
}

Don't forget to register WindowRef as a provider:

 @NgModule({
    ...
    providers: [ WindowRef ]
 })
 export class AppModule{}

Engage with a feature that is currently displayed in a separate window

Answer №1

Answer №2

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