1 /**
2 * Copyright (C) 2005-2009 Alfresco Software Limited.
3 *
4 * This file is part of the Spring Surf Extension project.
5 *
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.springframework.extensions.surf.site;
20
21 import org.springframework.extensions.surf.exception.RendererExecutionException;
22 import org.springframework.extensions.surf.render.AbstractProcessor;
23 import org.springframework.extensions.surf.render.ProcessorContext;
24
25 /**
26 * Processor class which renders a null result.
27 *
28 * Used to render vacant "empty" regions when there are no bound components.
29 * A common use case for application that are not "design focused".
30 *
31 * @author Kevin Roast
32 */
33 public class EmptyRegionRenderer extends AbstractProcessor
34 {
35 /* (non-Javadoc)
36 * @see org.alfresco.web.framework.render.AbstractProcessor#executeHeader(org.alfresco.web.framework.render.ProcessorContext)
37 */
38 public void executeHeader(ProcessorContext pc)
39 throws RendererExecutionException
40 {
41 }
42
43 /* (non-Javadoc)
44 * @see org.alfresco.web.framework.render.AbstractProcessor#executeBody(org.alfresco.web.framework.render.ProcessorContext)
45 */
46 public void executeBody(ProcessorContext pc)
47 throws RendererExecutionException
48 {
49 }
50
51 /* (non-Javadoc)
52 * @see org.alfresco.web.framework.render.Processor#exists(org.alfresco.web.framework.render.ProcessorContext)
53 */
54 public boolean exists(ProcessorContext pc)
55 {
56 return true;
57 }
58 }