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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {Component, NgModule} from '@angular/core';
import {BrowserModule} from '@angular/platform-browser';
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
@Component({
selector: 'async-app',
template: `
<div id='increment'>
<span class='val'>{{val1}}</span>
<button class='action' (click)="increment()">Increment</button>
</div>
<div id='delayedIncrement'>
<span class='val'>{{val2}}</span>
<button class='action' (click)="delayedIncrement()">Delayed Increment</button>
<button class='cancel' *ngIf="timeoutId != null" (click)="cancelDelayedIncrement()">Cancel</button>
</div>
<div id='multiDelayedIncrements'>
<span class='val'>{{val3}}</span>
<button class='action' (click)="multiDelayedIncrements(10)">10 Delayed Increments</button>
<button class='cancel' *ngIf="multiTimeoutId != null" (click)="cancelMultiDelayedIncrements()">Cancel</button>
</div>
<div id='periodicIncrement'>
<span class='val'>{{val4}}</span>
<button class='action' (click)="periodicIncrement()">Periodic Increment</button>
<button class='cancel' *ngIf="intervalId != null" (click)="cancelPeriodicIncrement()">Cancel</button>
</div>
`
})
class AsyncApplication {
val1: number = 0;
val2: number = 0;
val3: number = 0;
val4: number = 0;
timeoutId: any = null;
multiTimeoutId: any = null;
intervalId: any = null;
increment(): void { this.val1++; }
delayedIncrement(): void {
this.cancelDelayedIncrement();
this.timeoutId = setTimeout(() => {
this.val2++;
this.timeoutId = null;
}, 2000);
}
multiDelayedIncrements(i: number): void {
this.cancelMultiDelayedIncrements();
const self = this;
function helper(_i: number) {
if (_i <= 0) {
self.multiTimeoutId = null;
return;
}
self.multiTimeoutId = setTimeout(() => {
self.val3++;
helper(_i - 1);
}, 500);
}
helper(i);
}
periodicIncrement(): void {
this.cancelPeriodicIncrement();
this.intervalId = setInterval(() => this.val4++, 2000);
}
cancelDelayedIncrement(): void {
if (this.timeoutId != null) {
clearTimeout(this.timeoutId);
this.timeoutId = null;
}
}
cancelMultiDelayedIncrements(): void {
if (this.multiTimeoutId != null) {
clearTimeout(this.multiTimeoutId);
this.multiTimeoutId = null;
}
}
cancelPeriodicIncrement(): void {
if (this.intervalId != null) {
clearInterval(this.intervalId);
this.intervalId = null;
}
}
}
@NgModule(
{declarations: [AsyncApplication], bootstrap: [AsyncApplication], imports: [BrowserModule]})
class ExampleModule {
}
export function main() {
platformBrowserDynamic().bootstrapModule(ExampleModule);
}