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Java > Open Source Codes > org > netbeans > modules > xml > retriever > catalog > model > impl > SyncUpdateVisitor


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 1997-2006 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19 package org.netbeans.modules.xml.retriever.catalog.model.impl;
20
21 import org.netbeans.modules.xml.retriever.catalog.model.NextCatalog;
22 import org.netbeans.modules.xml.xam.ComponentUpdater;
23 import org.netbeans.modules.xml.xam.ComponentUpdater.Operation;
24 import org.netbeans.modules.xml.xam.dom.AbstractDocumentComponent;
25 import org.netbeans.modules.xml.retriever.catalog.model.Catalog;
26 import org.netbeans.modules.xml.retriever.catalog.model.CatalogComponent;
27 import org.netbeans.modules.xml.retriever.catalog.model.CatalogVisitor;
28 import org.netbeans.modules.xml.retriever.catalog.model.Catalog;
29
30 public class SyncUpdateVisitor extends CatalogVisitor.Default implements ComponentUpdater<CatalogComponent> {
31     private CatalogComponent target;
32     private Operation operation;
33     private int index;
34     
35     public SyncUpdateVisitor() {
36     }
37     
38     public void update(CatalogComponent target, CatalogComponent child, Operation operation) {
39         update(target, child, -1 , operation);
40     }
41     
42     public void update(CatalogComponent target, CatalogComponent child, int index, Operation operation) {
43         assert target != null;
44         assert child != null;
45         this.target = target;
46         this.index = index;
47         this.operation = operation;
48         child.accept(this);
49     }
50     
51     private void insert(String JavaDoc propertyName, CatalogComponent component) {
52         ((CatalogComponentImpl)target).insertAtIndex(propertyName, component, index);
53     }
54     
55     private void remove(String JavaDoc propertyName, CatalogComponent component) {
56         ((CatalogComponentImpl)target).removeChild(propertyName, component);
57     }
58     
59     public void visit(org.netbeans.modules.xml.retriever.catalog.model.System system) {
60         if (target instanceof Catalog) {
61             if (operation == Operation.ADD) {
62                 insert(Catalog.SYSTEM_PROP, system);
63             } else {
64                 remove(Catalog.SYSTEM_PROP, system);
65             }
66         }
67     }
68     
69     public void visit(NextCatalog nextCatalog) {
70         if (target instanceof Catalog) {
71             if (operation == Operation.ADD) {
72                 insert(Catalog.NEXTCATALOG_PROP, nextCatalog);
73             } else {
74                 remove(Catalog.NEXTCATALOG_PROP, nextCatalog);
75             }
76         }
77     }
78     
79 }
80
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