| /******************************************************************************* |
| * Copyright (c) 2009, 2011 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.e4.ui.services.events; |
| |
| import org.eclipse.e4.core.contexts.ContextFunction; |
| import org.eclipse.e4.core.contexts.ContextInjectionFactory; |
| import org.eclipse.e4.core.contexts.IEclipseContext; |
| import org.eclipse.e4.core.services.events.IEventBroker; |
| import org.eclipse.e4.ui.services.internal.events.EventBroker; |
| |
| |
| |
| /** |
| * Use this class to obtain an instance of {@link IEventBroker}. |
| * |
| * @noinstantiate This class is not intended to be instantiated by clients. |
| * @noextend This class is not intended to be sub-classed by clients. |
| */ |
| |
| public class EventBrokerFactory extends ContextFunction { |
| @Override |
| public Object compute(IEclipseContext context) { |
| EventBroker broker = context.get(EventBroker.class); |
| if (broker == null) { |
| broker = ContextInjectionFactory.make(EventBroker.class, context); |
| context.set(EventBroker.class, broker); |
| } |
| return broker; |
| } |
| } |
| |