/*
 * Copyright 2004-2007 the original author or authors.
 *
 * Licensed 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.springframework.webflow.execution;

/**
 * Allows the client to participate in flow execution. Encapsulates behavior to send the client an appropriate response
 * and handle the resulting event once the client responds.
 * 
 * @author Keith Donald
 * @see ViewFactory
 */
public interface View {

	/**
	 * Render this view's content.
	 */
	public void render();

	/**
	 * Was a user event signaled on this view in this request?
	 * @return true if yes, false otherwise
	 */
	public boolean eventSignaled();

	/**
	 * Get the user event signaled on this view in this request.
	 * @return the user event
	 */
	public Event getEvent();

}
