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Java > Open Source Codes > com > sun > facelets > tag > ui > InsertHandler


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.ui;
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.FaceletException;
25 import com.sun.facelets.FaceletHandler;
26 import com.sun.facelets.TemplateClient;
27 import com.sun.facelets.tag.TagAttribute;
28 import com.sun.facelets.tag.TagAttributeException;
29 import com.sun.facelets.tag.TagConfig;
30 import com.sun.facelets.tag.TagHandler;
31
32 /**
33  * @author Jacob Hookom
34  * @version $Id: InsertHandler.java,v 1.6 2006/04/03 06:25:36 jhook Exp $
35  */
36 public final class InsertHandler extends TagHandler implements TemplateClient {
37
38     private final String JavaDoc name;
39
40     /**
41      * @param config
42      */
43     public InsertHandler(TagConfig config) {
44         super(config);
45         TagAttribute attr = this.getAttribute("name");
46         if (attr != null) {
47             if (!attr.isLiteral()) {
48                 throw new TagAttributeException(this.tag, attr, "Must be Literal");
49             }
50             this.name = attr.getValue();
51         } else {
52             this.name = null;
53         }
54     }
55
56     /*
57      * (non-Javadoc)
58      *
59      * @see com.sun.facelets.FaceletHandler#apply(com.sun.facelets.FaceletContext,
60      * javax.faces.component.UIComponent)
61      */
62     public void apply(FaceletContext ctx, UIComponent parent)
63             throws IOException JavaDoc, FacesException, FaceletException, ELException {
64         
65         ctx.extendClient(this);
66         boolean found = false;
67         try {
68             found = ctx.includeDefinition(parent, this.name);
69         } finally {
70             ctx.popClient(this);
71         }
72         if (!found) {
73             this.nextHandler.apply(ctx, parent);
74         }
75     }
76
77     public boolean apply(FaceletContext ctx, UIComponent parent, String JavaDoc name) throws IOException JavaDoc, FacesException, FaceletException, ELException {
78         if (this.name == name || this.name != null && this.name.equals(name)) {
79             this.nextHandler.apply(ctx, parent);
80             return true;
81         }
82         return false;
83     }
84 }
85
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