/*
 * $Id: ActionController.java 471754 2006-11-06 14:55:09Z husted $
 *
 * 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.struts.tiles;

import java.io.IOException;

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

import org.apache.struts.action.Action;

/**
 * Struts wrapper implementation of Controller.  This implementation wraps an
 * <code>Action</code> in a <code>Controller</code>.
 */
public class ActionController implements Controller {

    /**
     * Struts action wrapped.
     */
    private Action action = null;

    /**
     * Constructor.
     *
     * @param action Action to be wrapped.
     */
    public ActionController(Action action) {
        this.action = action;
    }

    /**
     * Method associated to a tile and called immediately before tile is
     * included.  This implementation calls a Struts Action. No servlet is
     * set by this method.
     *
     * @param tileContext    Current tile context.
     * @param request        Current request.
     * @param response       Current response.
     * @param servletContext Current servlet context.
     */
    public void perform(
            ComponentContext tileContext,
            HttpServletRequest request,
            HttpServletResponse response,
            ServletContext servletContext)
            throws ServletException, IOException {

        try {
            action.execute(null, null, request, response);

        } catch (Exception e) {
            throw new ServletException(e);
        }
    }

    /**
     * @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 {

        this.action.execute(null, null, request, response);

    }
}