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Java > Open Source Codes > org > netbeans > api > retouche > source > SourceTaskFactoryManager


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.api.retouche.source;
20
21 import org.openide.util.Lookup;
22 import org.openide.util.LookupEvent;
23 import org.openide.util.LookupListener;
24
25 /**
26  * This file is originally from Retouche, the Java Support
27  * infrastructure in NetBeans. I have modified the file as little
28  * as possible to make merging Retouche fixes back as simple as
29  * possible.
30  *
31  *
32  * @author Jan Lahoda
33  */
34 public final class SourceTaskFactoryManager {
35     
36     private static SourceTaskFactoryManager INSTANCE;
37     
38     public static synchronized void register() {
39         INSTANCE = new SourceTaskFactoryManager();
40     }
41     
42     private Lookup.Result<SourceTaskFactory> factories;
43     
44     /** Creates a new instance of SourceTaskFactoryManager */
45     private SourceTaskFactoryManager() {
46         factories = Lookup.getDefault().lookupResult(SourceTaskFactory.class);
47         factories.addLookupListener(new LookupListener() {
48             public void resultChanged(LookupEvent ev) {
49                 update();
50             }
51         });
52         
53         update();
54     }
55     
56     private void update() {
57         for (SourceTaskFactory f : factories.allInstances()) {
58             ACCESSOR.fireChangeEvent(f);
59         }
60     }
61     
62     public static interface Accessor {
63         public abstract void fireChangeEvent(SourceTaskFactory f);
64     }
65     
66     public static Accessor ACCESSOR;
67     
68 }
69
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