39 lines
1.1 KiB
TypeScript
39 lines
1.1 KiB
TypeScript
import { Injectable } from '@angular/core';
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import { BehaviorSubject } from 'rxjs';
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import { Observable } from 'rxjs';
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import { HttpInterceptor, HttpResponse } from '@angular/common/http';
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import { HttpRequest } from '@angular/common/http';
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import { HttpHandler } from '@angular/common/http';
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import { HttpEvent } from '@angular/common/http';
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import { tap } from 'rxjs/operators';
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@Injectable({ providedIn: 'root' })
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export class SpinnerService {
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visibility: BehaviorSubject<boolean>;
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constructor() { this.visibility = new BehaviorSubject(false); }
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show() { this.visibility.next(true); }
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hide() { this.visibility.next(false);}
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}
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@Injectable()
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export class SpinnerHttpInterceptor implements HttpInterceptor {
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constructor(private spinnerService: SpinnerService) { }
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intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
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this.spinnerService.show();
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return next.handle(req)
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.pipe(tap((event: HttpEvent<any>) => {
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if (event instanceof HttpResponse) {
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this.spinnerService.hide();
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}
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}, (error) => {
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this.spinnerService.hide();
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}));
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}
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}
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