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Java > Open Source Codes > org > netbeans > modules > xml > axi > visitor > FindUsageVisitor


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19
20 package org.netbeans.modules.xml.axi.visitor;
21
22 import org.netbeans.modules.xml.axi.AXIComponent;
23 import org.netbeans.modules.xml.axi.AXIDocument;
24 import org.netbeans.modules.xml.axi.AXIModel;
25 import org.netbeans.modules.xml.axi.Element;
26
27 /**
28  *
29  * @author Ayub Khan
30  */
31 public class FindUsageVisitor extends AXINonCyclicVisitor {
32     
33     Preview p = null;
34     
35     Element usedBy = null;
36     
37     /** Creates a new instance of FindUsageVisitor */
38     public FindUsageVisitor(AXIModel am) {
39         super(am);
40         p = new Preview();
41     }
42     
43     public Preview findUsages(AXIDocument root) {
44         if(root == null) return null;
45         java.util.List JavaDoc<Element> axiges = root.getElements();
46         for(Element e : axiges) {
47             findUsages(e);
48         }
49         return p;
50     }
51     
52     public Preview findUsages(Element e) {
53         usedBy = e;
54         p.addToUsage(e, usedBy);
55         for(AXIComponent child: e.getChildren()) {
56             child.accept(this);
57         }
58         return p;
59     }
60     
61     public void visit(Element e) {
62         if(!canVisit(e)) //skip recursion
63 return;
64         p.addToUsage(e, usedBy);
65         visitChildren(e);
66     }
67 }
68
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