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Wicket is a Java web application framework that takes simplicity, separation of concerns and ease of development to a whole new level. Wicket pages can be mocked up, previewed and later revised using standard WYSIWYG HTML design tools. Dynamic content processing and form handling is all handled in Java code using a first-class component model backed by POJO data beans that can easily be persisted using your favorite technology.

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/*
 * 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.wicket;

import org.apache.wicket.behavior.Behavior;
import org.apache.wicket.event.IEvent;
import org.apache.wicket.event.IEventSink;

/**
 * Delivers an event to a component. Developers can implement and register their dispatchers in
 * {@link org.apache.wicket.settings.FrameworkSettings} to create custom strategies for
 * how events get delivered to components
 * 
 * @see IEventSink
 * @see IComponentAwareEventSink
 * 
 * @author Igor Vaynberg (ivaynberg)
 */
@FunctionalInterface
public interface IEventDispatcher
{
	/**
	 * Dispatches the even to the target component
	 * 
	 * @param sink
	 *            the sink for the event. Sinks usually implement {@link IEventSink} or
	 *            {@link IComponentAwareEventSink}. See the {@code component} parameter described
	 *            below.
	 * @param event
	 * @param component
	 *            provides context to the sink. Some sinks are owned by the component, eg
	 *            {@link Behavior}s, and thus it is useful for them to have a reference to their
	 *            owning component. If this method is not {@code null} the dispatcher should try to
	 *            look for an alternative sink method which takes a component reference as an
	 *            additional parameter, one such implementation is {@link IComponentAwareEventSink}.
	 */
	void dispatchEvent(Object sink, IEvent event, Component component);
}