/*

  * $Id: DefinitionRenderer.java 1215008 2011-12-16 00:31:49Z nlebas $

  *

  * 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.tiles.renderer;

 import java.io.IOException;

 import org.apache.tiles.TilesContainer;

 import org.apache.tiles.request.Request;

 import org.apache.tiles.request.render.CannotRenderException;

 import org.apache.tiles.request.render.Renderer;

 /**

  * Renders an attribute that contains a reference to a definition.

  *

  * @version $Rev: 1215008 $ $Date: 2011-12-16 11:31:49 +1100 (Fri, 16 Dec 2011) $

  * @since 3.0.0

  */

 public class DefinitionRenderer implements Renderer {

     /**

      * The Tiles container.

      */

     private TilesContainer container;

     /**

      * Constructor.

      *

      * @param container The Tiles container.

      */

     public DefinitionRenderer(TilesContainer container) {

         this.container = container;

     }

     /** {@inheritDoc} */

     @Override

     public void render(String path, Request request) throws IOException {

         if (path == null) {

             throw new CannotRenderException("Cannot dispatch a null path");

         }

         container.render(path, request);

     }

     /** {@inheritDoc} */

     public boolean isRenderable(String path, Request request) {

         return path != null && container.isValidDefinition(path, request);

     }

 }