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Java > Open Source Codes > org > netbeans > modules > editor > fold > SpiPackageAccessor


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
20 package org.netbeans.modules.editor.fold;
21
22 import org.netbeans.spi.editor.fold.FoldHierarchyTransaction;
23 import org.netbeans.spi.editor.fold.FoldOperation;
24
25 /**
26  * Accessor for the package-private functionality in org.netbeans.api.editor.fold.
27  *
28  * @author Miloslav Metelka
29  * @version 1.00
30  */
31
32 public abstract class SpiPackageAccessor {
33
34     private static SpiPackageAccessor INSTANCE;
35
36     public static SpiPackageAccessor get() {
37         return INSTANCE;
38     }
39
40     /**
41      * Register the accessor. The method can only be called once
42      * - othewise it throws IllegalStateException.
43      *
44      * @param accessor instance.
45      */
46     public static void register(SpiPackageAccessor accessor) {
47         if (INSTANCE != null) {
48             throw new IllegalStateException JavaDoc("Already registered"); // NOI18N
49 }
50         INSTANCE = accessor;
51     }
52     
53     public abstract FoldHierarchyTransaction createFoldHierarchyTransaction(
54     FoldHierarchyTransactionImpl impl);
55     
56     public abstract FoldHierarchyTransactionImpl getImpl(FoldHierarchyTransaction transaction);
57
58     public abstract FoldOperation createFoldOperation(FoldOperationImpl impl);
59
60 }
61
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