/*
 * $Id: ControllerSupport.java 54929 2004-10-16 16:38:42Z germuska $ 
 *
 * Copyright 1999-2004 The Apache Software Foundation.
 * 
 * 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.apache.struts.tiles;

import java.io.IOException;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Basic implementation of Controller.  Implementations can extend this class
 * to insulate themselves from changes in the <code>Controller</code> 
 * interface.
 */
public class ControllerSupport implements Controller {

	/**
	 * Method associated to a tile and called immediately before tile is 
	 * included. This implementation does nothing.
	 * @param tileContext Current tile context.
	 * @param request Current request
	 * @param response Current response
	 * @param servletContext Current servlet context
       * @deprecated Use execute() instead.  This will be removed after 
       * Struts 1.2.
	 */
	public void perform(
		ComponentContext tileContext,
		HttpServletRequest request,
		HttpServletResponse response,
		ServletContext servletContext)
		throws ServletException, IOException {
	}

	/**
	 * @see org.apache.struts.tiles.Controller#execute(org.apache.struts.tiles.ComponentContext, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse, javax.servlet.ServletContext)
	 */
	public void execute(
		ComponentContext tileContext,
		HttpServletRequest request,
		HttpServletResponse response,
		ServletContext servletContext)
		throws Exception {

            perform(tileContext, request, response, servletContext);
	}
}