bundles/org.eclipse.vorto.common/src/org/eclipse/vorto/api/ui/changeevent/ProjectEventListenerRegistry.java

/*******************************************************************************
 * Copyright (c) 2014 Bosch Software Innovations GmbH and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * and Eclipse Distribution License v1.0 which accompany this distribution.
 *
 * The Eclipse Public License is available at
 * http://www.eclipse.org/legal/epl-v10.html
 * The Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 * Bosch Software Innovations GmbH - Please refer to git log
 *
 *******************************************************************************/
package org.eclipse.vorto.api.ui.changeevent;

import java.util.ArrayList;
import java.util.List;


public class ProjectEventListenerRegistry {
	private List<IProjectChangeListener> eventReceivers = new ArrayList<IProjectChangeListener>();
	private static ProjectEventListenerRegistry instance = new ProjectEventListenerRegistry();

	private ProjectEventListenerRegistry() {

	}

	public static ProjectEventListenerRegistry getInstance() {
		if (instance == null) {
			instance = new ProjectEventListenerRegistry();
		}
		return instance;
	}

	public void add(IProjectChangeListener listener) {
		this.eventReceivers.add(listener);
	}

	public void remove(IProjectChangeListener listener) {
		this.eventReceivers.remove(listener);
	}

	public void fire(ProjectChangeEvent projectChangeEvent) {
		for (IProjectChangeListener listener : eventReceivers) {
			listener.projectChanged(projectChangeEvent);
		}
	}
}