001/*
002 * (C) Copyright 2006-2011 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Nuxeo - initial API and implementation
018 *
019 * $Id$
020 */
021
022package org.nuxeo.runtime.services.event;
023
024/**
025 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
026 */
027public interface EventListener {
028
029    /**
030     * Notified about an event about to be processed. Returns false to cancel the event.
031     *
032     * @param event the event
033     * @return false to cancel the event or true otherwise
034     * @deprecated since 5.7 (unused)
035     */
036    @Deprecated
037    boolean aboutToHandleEvent(Event event);
038
039    /**
040     * An event was received.
041     *
042     * @param event
043     */
044    void handleEvent(Event event);
045
046}