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1 /*
2 * Title: AbstractDecoratorMapper
3 * Description:
4 *
5 * This software is published under the terms of the OpenSymphony Software
6 * License version 1.1, of which a copy has been included with this
7 * distribution in the LICENSE.txt file.
8 */
9
10 package com.opensymphony.module.sitemesh.mapper;
11
12 import com.opensymphony.module.sitemesh.Config;
13 import com.opensymphony.module.sitemesh.Decorator;
14 import com.opensymphony.module.sitemesh.DecoratorMapper;
15 import com.opensymphony.module.sitemesh.Page;
16
17 import javax.servlet.http.HttpServletRequest;
18 import java.util.Properties;
19
20 /**
21 * Abstract DecoratorMapper implementation for easy creation of new DecoratorMappers.
22 *
23 * <p>Typically, an implementation would override getNamedDecorator() <b>or</b> getDecorator().
24 * If a Decorator cannot be returned from either of these, then they should delegate to their
25 * superclass.</p>
26 *
27 * @author <a href="mailto:joe@truemesh.com">Joe Walnes</a>
28 * @version $Revision: 1.1 $
29 *
30 * @see com.opensymphony.module.sitemesh.DecoratorMapper
31 */
32 public abstract class AbstractDecoratorMapper implements DecoratorMapper {
33 /** Parent DecoratorMapper. */
34 protected DecoratorMapper parent = null;
35 protected Config config = null;
36
37 /** Set parent. */
38 public void init(Config config, Properties properties, DecoratorMapper parent) throws InstantiationException {
39 this.parent = parent;
40 this.config = config;
41 }
42
43 /** Delegate to parent. */
44 public Decorator getDecorator(HttpServletRequest request, Page page) {
45 return parent.getDecorator(request, page);
46 }
47
48 /** Delegate to parent. */
49 public Decorator getNamedDecorator(HttpServletRequest request, String name) {
50 return parent.getNamedDecorator(request, name);
51 }
52 }