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Java > Open Source Codes > com > sun > facelets > tag > jstl > core > IfHandler


1 /**
2  * Licensed under the Common Development and Distribution License,
3  * you may not use this file except in compliance with the License.
4  * You may obtain a copy of the License at
5  *
6  * http://www.sun.com/cddl/
7  *
8  * Unless required by applicable law or agreed to in writing, software
9  * distributed under the License is distributed on an "AS IS" BASIS,
10  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
11  * implied. See the License for the specific language governing
12  * permissions and limitations under the License.
13  */
14
15 package com.sun.facelets.tag.jstl.core;
16
17 import java.io.IOException JavaDoc;
18
19 import javax.el.ELException;
20 import javax.faces.FacesException;
21 import javax.faces.component.UIComponent;
22
23 import com.sun.facelets.FaceletContext;
24 import com.sun.facelets.tag.TagAttribute;
25 import com.sun.facelets.tag.TagConfig;
26 import com.sun.facelets.tag.TagHandler;
27
28 /**
29  * @author Jacob Hookom
30  * @version $Id: IfHandler.java,v 1.4 2005/08/24 04:38:52 jhook Exp $
31  */
32 public final class IfHandler extends TagHandler {
33
34     private final TagAttribute test;
35
36     private final TagAttribute var;
37
38     /**
39      * @param config
40      */
41     public IfHandler(TagConfig config) {
42         super(config);
43         this.test = this.getRequiredAttribute("test");
44         this.var = this.getAttribute("var");
45     }
46
47     public void apply(FaceletContext ctx, UIComponent parent)
48             throws IOException JavaDoc, FacesException, ELException {
49         boolean b = this.test.getBoolean(ctx);
50         if (this.var != null) {
51             ctx.setAttribute(var.getValue(ctx), new Boolean JavaDoc(b));
52         }
53         if (b) {
54             this.nextHandler.apply(ctx, parent);
55         }
56     }
57
58 }
59
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