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 }