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Java > Open Source Codes > org > apache > struts > webapp > example2 > LinkSubscriptionTag


1 /*
2  * Copyright 1999-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17
18 package org.apache.struts.webapp.example2;
19
20
21 import javax.faces.component.UIComponent;
22 import javax.faces.el.ValueBinding;
23 import javax.faces.webapp.UIComponentTag;
24
25
26 /**
27  * Generate a URL-encoded hyperlink to the specified URI, with
28  * associated query parameters selecting a specified Subscription.
29  *
30  * @author Craig R. McClanahan
31  * @version $Rev: 54934 $ $Date: 2004-10-16 18:07:50 +0100 (Sat, 16 Oct 2004) $
32  */
33
34 public class LinkSubscriptionTag extends UIComponentTag {
35
36
37     // -------------------------------------------------------------- Attributes
38
39
40     /**
41      * The attribute name.
42      */
43     protected String JavaDoc name = "subscription";
44
45     public void setName(String JavaDoc name) {
46         this.name = name;
47     }
48
49
50     /**
51      * The context-relative URI.
52      */
53     protected String JavaDoc page = null;
54
55     public void setPage(String JavaDoc page) {
56         this.page = page;
57     }
58
59
60     // ---------------------------------------------------------- Public Methods
61
62
63     /**
64      * Return the component type for this tag.</p>
65      */
66     public String JavaDoc getComponentType() {
67
68         return ("Output");
69
70     }
71
72
73     /**
74      * <p>Return the renderer type associated with this tag.</p>
75      */
76     public String JavaDoc getRendererType() {
77
78         return ("LinkSubscription");
79
80     }
81
82
83     /**
84      * <p>Release resources allocated to this tag instance.</p>
85      */
86     public void release() {
87
88         super.release();
89         this.name = "subscription";
90         this.page = null;
91
92     }
93
94
95     // ------------------------------------------------------- Protected Methods
96
97
98     /**
99      * <p>Override attributes set on this tag instance.</p>
100      *
101      * @param component Component whose attributes should be overridden
102      */
103     protected void setProperties(UIComponent component) {
104
105         super.setProperties(component);
106         if (name != null) {
107             if (isValueReference(name)) {
108                 ValueBinding vb =
109                     getFacesContext().getApplication().createValueBinding(name);
110                 component.setValueBinding("name", vb);
111             } else {
112                 component.getAttributes().put("name", name);
113             }
114         }
115         if (page != null) {
116             if (isValueReference(page)) {
117                 ValueBinding vb =
118                     getFacesContext().getApplication().createValueBinding(page);
119                 component.setValueBinding("page", vb);
120             } else {
121                 component.getAttributes().put("page", page);
122             }
123         }
124
125     }
126
127
128 }
129
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