/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package javax.faces.component.behavior;

import javax.faces.component.UIComponent;
import javax.faces.event.BehaviorEvent;

/**
 * <p class="changed_added_2_0">The <strong>Behavior</strong> interface is 
 * the root API of the component behavior model.  Behaviors are objects that 
 * are attached to {@link UIComponent}s in order to enhance components with 
 * functionality not explicitly defined by the component implementation itself.
 * The component behavior API is intended to support different types of 
 * behavior contracts, and possibly different types of interactions between 
 * behaviors and components.  The first such contract is the 
 * {@link ClientBehavior}, which defines a mechanism by which script-producing
 * behaviors attach scripts to components for execution on the client.  In the
 * future other types of behavior contracts may be added.</p>
 * 
 * <p>Like other attached objects (converters, validators) Behavior instances 
 * are created via the {@link javax.faces.application.Application} object.  See 
 * {@link javax.faces.application.Application#createBehavior} for more details.</p>
 *
 * @since 2.0
 */
public interface Behavior {

    /**
     * <p class="changed_added_2_0">Broadcast the specified 
     * {@link BehaviorEvent} to all registered
     * event listeners who have expressed an interest in events of this
     * type.  Listeners are called in the order in which they were
     * added.</p>
     *
     * @param event The {@link BehaviorEvent} to be broadcast
     *
     * @throws javax.faces.event.AbortProcessingException Signal the JavaServer Faces
     *  implementation that no further processing on the current event
     *  should be performed
     * @throws IllegalArgumentException if the implementation class
     *  of this {@link BehaviorEvent} is not supported by this component
     * @throws NullPointerException if <code>event</code> is
     * <code>null</code>
     *
     * @since 2.0
     */
    public void broadcast(BehaviorEvent event);

}
