55 lines
1.5 KiB
TypeScript
55 lines
1.5 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 {Component, NgModule} from '@angular/core';
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import {BrowserModule} from '@angular/platform-browser';
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import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
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import {Observable} from 'rxjs/Observable';
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import {Subscriber} from 'rxjs/Subscriber';
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// #docregion AsyncPipePromise
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@Component({
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selector: 'async-promise',
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template: `<div>
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<p>Wait for it... {{ greeting | async }}</p>
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<button (click)="clicked()">{{ arrived ? 'Reset' : 'Resolve' }}</button>
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</div>`
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})
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export class AsyncPromiseComponent {
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greeting: Promise<string> = null;
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arrived: boolean = false;
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private resolve: Function = null;
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constructor() { this.reset(); }
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reset() {
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this.arrived = false;
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this.greeting = new Promise<string>((resolve, reject) => { this.resolve = resolve; });
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}
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clicked() {
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if (this.arrived) {
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this.reset();
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} else {
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this.resolve('hi there!');
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this.arrived = true;
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}
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}
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}
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// #enddocregion
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// #docregion AsyncPipeObservable
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@Component({selector: 'async-observable', template: '<div>Time: {{ time | async }}</div>'})
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export class AsyncObservableComponent {
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time = new Observable<number>((observer: Subscriber<number>) => {
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setInterval(() => observer.next(new Date().getTime()), 500);
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});
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}
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// #enddocregion
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