angular-cn/modules/@angular/platform-browser/src/dom/events/dom_events.ts

/**
 * @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 {Inject, Injectable} from '@angular/core';

import {DOCUMENT} from '../dom_tokens';

import {EventManagerPlugin} from './event_manager';

@Injectable()
export class DomEventsPlugin extends EventManagerPlugin {
  constructor(@Inject(DOCUMENT) doc: any) { super(doc); }

  // This plugin should come last in the list of plugins, because it accepts all
  // events.
  supports(eventName: string): boolean { return true; }

  addEventListener(element: HTMLElement, eventName: string, handler: Function): Function {
    element.addEventListener(eventName, handler as any, false);
    return () => element.removeEventListener(eventName, handler as any, false);
  }
}