ActionObserver.java

/*******************************************************************************
 * Copyright (c) 2007, 2014 compeople AG 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:
 *    compeople AG - initial API and implementation
 *******************************************************************************/
package org.eclipse.riena.internal.ui.ridgets.swt;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.riena.core.util.ListenerList;
import org.eclipse.riena.ui.ridgets.IActionListener;
import org.eclipse.riena.ui.ridgets.IRidget;

/**
 * This class notifies a collection of action {@link IActionListener}s when a
 * widget is selected.
 */
public class ActionObserver extends AbstractObserver<IActionListener> {

	public ActionObserver(final IRidget source) {
		super(source);
	}

	@Override
	protected ListenerList<IActionListener> createList() {
		return new ListenerList<IActionListener>(IActionListener.class);
	}

	@Override
	protected void fireAction(final SelectionEvent evt) {
		final ListenerList<IActionListener> listeners = getListeners();
		if (listeners != null) {
			for (final IActionListener listener : listeners.getListeners()) {
				listener.callback();
			}
		}
	}

}