在Angular应用中,我们可以使用RxJS的Subject和debounceTime操作符来处理窗口大小调整事件。在我们的服务/服务中,我们定义一个窗口大小变化的Subject,然后我们可以在需要的任何组件中订阅它。当窗口大小变化时,我们可以使用Angular路由器中的NavigationEnd事件来重新导航到正确的组件。
首先,我们定义一个服务来处理窗口大小变化:
import { Injectable } from '@angular/core'; import { Subject } from 'rxjs';
@Injectable({ providedIn: 'root' }) export class WindowResizeService { private _resizeSubject = new Subject();
public get resizeObserver$() { return this._resizeSubject.asObservable().pipe(debounceTime(300)); }
constructor() { window.addEventListener('resize', this.onResize.bind(this)); }
private onResize() { this._resizeSubject.next(); } }
然后,我们可以在需要的组件中订阅它,在回调函数中重新导航:
import { Component, OnDestroy } from '@angular/core'; import { Router } from '@angular/router'; import { Subscription } from 'rxjs'; import { WindowResizeService } from '../services/window-resize.service';
@Component({ selector: 'app-some-component', templateUrl: './some-component.component.html', styleUrls: ['./some-component.component.css'] }) export class SomeComponent implements OnDestroy { private _subscription: Subscription;
constructor(private _resizeService: WindowResizeService, private _router: Router) { this._subscription = this._resizeService.resizeObserver$.subscribe(() => { this.onWindowResize(); }); }
ngOnDestroy() { if (this._subscription) { this._subscription.unsubscribe(); } }
private onWindowResize() { // here we can navigate to the correct component this._router.navigate(['/some-route']); } }
这样,我们就可以通过订阅窗口大小变化事件来重新导航到正确的组件,以避免在调整窗口大小时出