001/*
002 * Copyright (c) 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the Eclipse Public License v1.0
006 * which accompanies this distribution, and is available at
007 * http://www.eclipse.org/legal/epl-v10.html
008 *
009 * Contributors:
010 *     Nuxeo - initial API and implementation
011 *
012 * $Id$
013 */
014
015package org.nuxeo.runtime.services.event;
016
017/**
018 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
019 */
020public interface EventListener {
021
022    /**
023     * Notified about an event about to be processed. Returns false to cancel the event.
024     *
025     * @param event the event
026     * @return false to cancel the event or true otherwise
027     * @deprecated since 5.7 (unused)
028     */
029    @Deprecated
030    boolean aboutToHandleEvent(Event event);
031
032    /**
033     * An event was received.
034     *
035     * @param event
036     */
037    void handleEvent(Event event);
038
039}