/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.myfaces.extensions.scripting.api.extensionevents;

/**
 * @author Werner Punz (latest modification by $Author$)
 * @version $Revision$ $Date$
 *          <p/>
 *          Central external listener interface for the extension events
 */
public interface ExtensionEventListener {

    /**
     * The central event handling callback which gets
     * the callback back
     *
     * @param ev
     */
    public void handleEvent(ExtensionEvent ev);

    /**
     * returns the event identifiers this listener
     * is a listener for (additional hints which will speed up the event handling)
     *
     * @param evt the event to be triggered for
     * @return true if the listener is a listener for the specific event
     */
    public boolean isListenerFor(ExtensionEvent evt);

}