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Java > Open Source Codes > org > apache > taglibs > standard > tag > rt > core > WhenTag


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 package org.apache.taglibs.standard.tag.rt.core;
18
19 import org.apache.taglibs.standard.tag.common.core.WhenTagSupport;
20
21 /**
22  * <p>Tag handler for &lt;when&gt; in JSTL's rtexprvalue library.</p>
23  *
24  * @author Shawn Bayern
25  */
26
27 public class WhenTag extends WhenTagSupport {
28
29     //*********************************************************************
30 // Constructor and lifecycle management
31
32     // initialize inherited and local state
33 public WhenTag() {
34         super();
35         init();
36     }
37
38     // Releases any resources we may have (or inherit)
39 public void release() {
40         super.release();
41         init();
42     }
43
44
45     //*********************************************************************
46 // Supplied conditional logic
47
48     protected boolean condition() {
49         return test;
50     }
51
52
53     //*********************************************************************
54 // Private state
55
56     private boolean test; // the value of the 'test' attribute
57
58
59     //*********************************************************************
60 // Accessors
61
62     // receives the tag's 'test' attribute
63 public void setTest(boolean test) {
64         this.test = test;
65     }
66
67
68     //*********************************************************************
69 // Private utility methods
70
71     // resets internal state
72 private void init() {
73         test = false;
74     }
75 }
76
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