/********************************************************************************
 * Copyright (C) 2017 TypeFox and others.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the Eclipse
 * Public License v. 2.0 are satisfied: GNU General Public License, version 2
 * with the GNU Classpath Exception which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 ********************************************************************************/ import { injectable } from 'inversify' ; import { Emitter , Event } from '../common/event' ; export interface SelectionProvider < T > { onSelectionChanged : Event < T | undefined > ; } @ injectable ( ) export class SelectionService implements SelectionProvider < Object | undefined > { private currentSelection : Object | undefined ; protected readonly onSelectionChangedEmitter = new Emitter < any > ( ) ; readonly onSelectionChanged : Event < any > = this . onSelectionChangedEmitter . event ; get selection ( ) : Object | undefined { return this . currentSelection ; } set selection ( selection ) { this . currentSelection = selection ; this . onSelectionChangedEmitter . fire ( this . currentSelection ) ; } }