d442b6855f
This service worker is a conceptual derivative of the existing @angular/service-worker maintained at github.com/angular/mobile-toolkit, but has been rewritten to support use across a much wider variety of applications. Entrypoints include: @angular/service-worker: a library for use within Angular client apps to communicate with the service worker. @angular/service-worker/gen: a library for generating ngsw.json files from glob-based SW config files. @angular/service-worker/ngsw-worker.js: the bundled service worker script itself. @angular/service-worker/ngsw-cli.js: a CLI tool for generating ngsw.json files from glob-based SW config files.
43 lines
1.3 KiB
TypeScript
43 lines
1.3 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {Injectable} from '@angular/core';
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import {Observable} from 'rxjs/Observable';
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import {defer as obs_defer} from 'rxjs/observable/defer';
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import {map as op_map} from 'rxjs/operator/map';
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import {NgswCommChannel, UpdateActivatedEvent, UpdateAvailableEvent} from './low_level';
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/**
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* Subscribe to update notifications from the Service Worker, trigger update
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* checks, and forcibly activate updates.
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*
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* @experimental
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*/
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@Injectable()
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export class SwUpdate {
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readonly available: Observable<UpdateAvailableEvent>;
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readonly activated: Observable<UpdateActivatedEvent>;
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constructor(private sw: NgswCommChannel) {
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this.available = this.sw.eventsOfType('UPDATE_AVAILABLE');
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this.activated = this.sw.eventsOfType('UPDATE_ACTIVATED');
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}
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checkForUpdate(): Promise<void> {
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const statusNonce = this.sw.generateNonce();
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return this.sw.postMessageWithStatus('CHECK_FOR_UPDATES', {statusNonce}, statusNonce);
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}
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activateUpdate(): Promise<void> {
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const statusNonce = this.sw.generateNonce();
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return this.sw.postMessageWithStatus('ACTIVATE_UPDATE', {statusNonce}, statusNonce);
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}
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}
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