Widgetin.java

/*******************************************************************************
 * Copyright (c) 2006-2013, Cloudsmith Inc.
 * The code, documentation and other materials contained herein have been
 * licensed under the Eclipse Public License - v 1.0 by the copyright holder
 * listed above, as the Initial Contributor under such license. The text of
 * such license is available at www.eclipse.org.
 ******************************************************************************/

package org.eclipse.buckminster.ui.general.editor.simple;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;

/**
 * @author Karel Brezina
 * 
 */
public class Widgetin implements IWidgetin {
	private Object data = null;

	private final Map<Integer, List<Listener>> listenersMap = new HashMap<Integer, List<Listener>>();

	@Override
	public void addListener(int eventType, Listener listener) {
		List<Listener> eventListeners = listenersMap.get(Integer.valueOf(eventType));

		if (eventListeners == null) {
			eventListeners = new ArrayList<Listener>();
			listenersMap.put(Integer.valueOf(eventType), eventListeners);
		}

		if (!eventListeners.contains(listener)) {
			eventListeners.add(listener);
		}
	}

	@Override
	public Object getData() {
		return data;
	}

	@Override
	public void notifyListeners(int eventType, Event event) {
		List<Listener> eventListeners = listenersMap.get(Integer.valueOf(eventType));

		if (eventListeners != null) {
			for (Listener listener : eventListeners) {
				listener.handleEvent(event);
			}
		}
	}

	@Override
	public void removeListener(int eventType, Listener listener) {
		listenersMap.remove(Integer.valueOf(eventType));
	}

	@Override
	public void setData(Object data) {
		this.data = data;
	}

}