1 /**
2 * This file Copyright (c) 2011 Magnolia International
3 * Ltd. (http://www.magnolia-cms.com). All rights reserved.
4 *
5 *
6 * This file is dual-licensed under both the Magnolia
7 * Network Agreement and the GNU General Public License.
8 * You may elect to use one or the other of these licenses.
9 *
10 * This file is distributed in the hope that it will be
11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
12 * implied warranty of MERCHANTABILITY or FITNESS FOR A
13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
14 * Redistribution, except as permitted by whichever of the GPL
15 * or MNA you select, is prohibited.
16 *
17 * 1. For the GPL license (GPL), you can redistribute and/or
18 * modify this file under the terms of the GNU General
19 * Public License, Version 3, as published by the Free Software
20 * Foundation. You should have received a copy of the GNU
21 * General Public License, Version 3 along with this program;
22 * if not, write to the Free Software Foundation, Inc., 51
23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
24 *
25 * 2. For the Magnolia Network Agreement (MNA), this file
26 * and the accompanying materials are made available under the
27 * terms of the MNA which accompanies this distribution, and
28 * is available at http://www.magnolia-cms.com/mna.html
29 *
30 * Any modifications to this file must keep this entire header
31 * intact.
32 *
33 */
34 package info.magnolia.rendering.renderer.registry;
35
36 import info.magnolia.registry.RegistryMap;
37 import info.magnolia.registry.RegistrationException;
38 import info.magnolia.rendering.renderer.Renderer;
39
40 import javax.inject.Singleton;
41 import java.util.List;
42 import java.util.Set;
43
44 /**
45 * Central registry of all renderers.
46 *
47 * @version $Id$
48 */
49 @Singleton
50 public class RendererRegistry {
51
52 private final RegistryMap<String, RendererProvider> registry = new RegistryMap<String, RendererProvider>() {
53
54 @Override
55 protected String keyFromValue(RendererProvider provider) {
56 return provider.getType();
57 }
58 };
59
60 public Renderer getRenderer(String type) throws RegistrationException {
61
62 RendererProvider provider;
63 try {
64 provider = registry.getRequired(type);
65 } catch (RegistrationException e) {
66 throw new RegistrationException("No renderer registered for type: " + type, e);
67 }
68
69 return provider.getRenderer();
70 }
71
72 public void register(RendererProvider rendererProvider) {
73 registry.put(rendererProvider.getType(), rendererProvider);
74 }
75
76 public void unregister(String type) {
77 registry.remove(type);
78 }
79
80 public Set<String> unregisterAndRegister(Set<String> registeredTypes, List<RendererProvider> providers) {
81 return registry.removeAndPutAll(registeredTypes, providers);
82 }
83 }