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Java > Open Source Codes > org > apache > tapestry > link > AbsoluteLinkRenderer


1 // Copyright 2004, 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.tapestry.link;
16
17 import org.apache.tapestry.IRequestCycle;
18 import org.apache.tapestry.engine.ILink;
19
20 /**
21  * Renders a link using an absolute URL, not simply a URI
22  * (as with {@link org.apache.tapestry.link.DefaultLinkRenderer}. In addition,
23  * the scheme, server and port may be changed (this may be appropriate when
24  * switching between secure and insecure portions of an application).
25  *
26  * @author Howard Lewis Ship
27  * @since 3.0
28  *
29  **/
30
31 public class AbsoluteLinkRenderer extends DefaultLinkRenderer
32 {
33     private String JavaDoc _scheme;
34     private String JavaDoc _serverName;
35     private int _port;
36
37     public int getPort()
38     {
39         return _port;
40     }
41
42     public String JavaDoc getScheme()
43     {
44         return _scheme;
45     }
46
47     public String JavaDoc getServerName()
48     {
49         return _serverName;
50     }
51
52     /**
53      * Used to override the port in the final URL, if specified. If not specified,
54      * the port provided by the {@link javax.servlet.ServletRequest#getServerPort() request}
55      * is used (typically, the value 80).
56      *
57      **/
58
59     public void setPort(int port)
60     {
61         _port = port;
62     }
63     
64     /**
65      * Used to override the scheme in the final URL, if specified. If not specified,
66      * the scheme provided by the {@link javax.servlet.ServletRequest#getScheme() request}
67      * is used (typically, <code>http</code>).
68      *
69      **/
70
71     public void setScheme(String JavaDoc scheme)
72     {
73         _scheme = scheme;
74     }
75
76     /**
77      * Used to override the server name in the final URL, if specified. If not specified,
78      * the port provided by the {@link javax.servlet.ServletRequest#getServerName() request}
79      * is used.
80      *
81      **/
82
83     public void setServerName(String JavaDoc serverName)
84     {
85         _serverName = serverName;
86     }
87
88     protected String JavaDoc constructURL(ILink link, String JavaDoc anchor, IRequestCycle cycle)
89     {
90         return link.getAbsoluteURL(_scheme, _serverName, _port, anchor, true);
91     }
92
93 }
94
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