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Java > Open Source Codes > org > openide > util > lookup > WaitableResult


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.openide.util.lookup;
20
21 import java.util.Collection JavaDoc;
22 import org.openide.util.Lookup;
23
24
25 /** A special subclass of lookup that is able to wait before queries.
26  *
27  * @author Jaroslav Tulach
28  */
29 abstract class WaitableResult<T> extends Lookup.Result<T> {
30     /** Used by proxy results to synchronize before lookup.
31      */
32     protected abstract void beforeLookup(Lookup.Template t);
33
34     /** Needed to group notification of outside the package listeners
35      * after all AbstractLookup and ProxyLookups have been updated.
36      * @param evAndListeners LookupEvent, LookupListener, LookupEvent, LookupListener, etc.
37      */
38     protected abstract void collectFires(Collection JavaDoc<Object JavaDoc> evAndListeners);
39      
40 }
41
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