带有材质UI的Angular 4-Sidenav

Question

I am newbie-Angular developer and I'm learning right now.

In my project I want to make a simple page with a button and a sidenav (built with angular material) like the official material example ( https://material.angular.io/components/sidenav/overview )

The problem is that I want to make the sidenav in one separate component (like sidenav.component.ts) and the "homepage" in the app.component.

The homepage is full of stuff like paragraphs, divs, and I want to implement the sidenav (obviously with the onClick event functioning in the homepage) in every page without write "md-sidenav-container" in all pages.

Here an example image

What I have to do?

Answer 1

Create a sidenav component

sidenav.component.html:

<md-sidenav-container>
  <md-sidenav #sidenav mode="side">
    Sidenav content
  </md-sidenav>
  <ng-content></ng-content>
</md-sidenav-container>

sidenav.component.ts:

@Component({
  selector: 'app-sidenav',
  templateUrl: './sidenav.component.html',
  styleUrls: ['./sidenav.component.scss']
})
export class SidenavComponent implements OnInit {

  @ViewChild('sidenav') public sidenav: MdSidenav;

  constructor(private sidenavService: SidenavService) { }

  ngOnInit() {
    this.sidenavService.setSidenav(this.sidenav);
  }

}

sidenav.service.ts:

@Injectable()
export class SidenavService {
  private sidenav: MdSidenav;

  public setSidenav(sidenav: MdSidenav) {
    this.sidenav = sidenav;
  }

  public open(): Promise<MdDrawerToggleResult> {
    return this.sidenav.open();
  }

  public close(): Promise<MdDrawerToggleResult> {
    return this.sidenav.close();
  }

  public toggle(isOpen?: boolean): Promise<MdDrawerToggleResult> {
    return this.sidenav.toggle(isOpen);
  }
}

(Don't forget to add the component and the service to a module!)

In the AppComponent you can use the sidenav component like this:

<app-sidenav>
    <router-outlet></router-outlet>
</app-sidenav>

The router loads the components into the router-outlet . The router-outlet element will be placed inside the <ng-content></ng-content> (see sidenav.component.html).

The sidenav service enables you to control the sidenav component from every component of your application.

Usage of sidenav service in header component

Inject the service inside the header component:

constructor(private sidenavService: SidenavService) { }

Create method to toggle the sidenav:

toggleSidenav() {
  this.sidenavService.toggle();
}

And in the markup you can use a button like this:

<button (click)="toggleSidenav()">Toggle sidenav</button>

---

See small demo here:

https://stackblitz.com/edit/angular-material-kcszgq