1 /* 2 * $Id: BasicRendererFactory.java 1306435 2012-03-28 15:39:11Z nlebas $ 3 * 4 * Licensed to the Apache Software Foundation (ASF) under one 5 * or more contributor license agreements. See the NOTICE file 6 * distributed with this work for additional information 7 * regarding copyright ownership. The ASF licenses this file 8 * to you under the Apache License, Version 2.0 (the 9 * "License"); you may not use this file except in compliance 10 * with the License. You may obtain a copy of the License at 11 * 12 * http://www.apache.org/licenses/LICENSE-2.0 13 * 14 * Unless required by applicable law or agreed to in writing, 15 * software distributed under the License is distributed on an 16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 17 * KIND, either express or implied. See the License for the 18 * specific language governing permissions and limitations 19 * under the License. 20 */ 21 package org.apache.tiles.request.render; 22 23 import java.util.HashMap; 24 import java.util.Map; 25 26 27 /** 28 * Basic renderer factory implementation. 29 * 30 * @version $Rev: 1306435 $ $Date: 2012-03-29 02:39:11 +1100 (Thu, 29 Mar 2012) $ 31 */ 32 public class BasicRendererFactory implements RendererFactory { 33 34 /** 35 * The renderer name/renderer map. 36 */ 37 protected Map<String, Renderer> renderers; 38 39 /** 40 * The default renderer. 41 */ 42 protected Renderer defaultRenderer; 43 44 /** 45 * Constructor. 46 */ 47 public BasicRendererFactory() { 48 renderers = new HashMap<String, Renderer>(); 49 } 50 51 /** {@inheritDoc} */ 52 public Renderer getRenderer(String name) { 53 Renderer retValue; 54 if (name != null) { 55 retValue = renderers.get(name); 56 if (retValue == null) { 57 throw new NoSuchRendererException("Cannot find a renderer named '" + name + "'"); 58 } 59 } else { 60 retValue = defaultRenderer; 61 } 62 63 return retValue; 64 } 65 66 /** 67 * Sets the default renderer. 68 * 69 * @param renderer The default renderer. 70 */ 71 public void setDefaultRenderer(Renderer renderer) { 72 this.defaultRenderer = renderer; 73 } 74 75 /** 76 * Registers a renderer. 77 * 78 * @param name The name of the renderer. 79 * @param renderer The renderer to register. 80 */ 81 public void registerRenderer(String name, Renderer renderer) { 82 renderers.put(name, renderer); 83 } 84 }