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comparison org.eclipse.core.databinding/src/org/eclipse/core/databinding/observable/StaleEvent.d @ 78:0a55d2d5a946

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Added file for databinding
author Frank Benoit <benoit@tionex.de>
date Tue, 14 Apr 2009 11:35:29 +0200
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76:f05e6e8b2f2d 78:0a55d2d5a946
1 /*******************************************************************************
2 * Copyright (c) 2006, 2007 IBM Corporation and others.
3 * All rights reserved. This program and the accompanying materials
4 * are made available under the terms of the Eclipse Public License v1.0
5 * which accompanies this distribution, and is available at
6 * http://www.eclipse.org/legal/epl-v10.html
7 *
8 * Contributors:
9 * IBM Corporation - initial API and implementation
10 *******************************************************************************/
11
12 module org.eclipse.core.databinding.observable.StaleEvent;
13
14 import java.lang.all;
15
16 /**
17 * Generic event denoting that the state of an {@link IObservable} object is
18 * about to change. Note that this event is only fired when an observable
19 * becomes stale, not when it becomes unstale; an observable that becomes
20 * unstale should always fire a change event. Staleness can be used (for
21 * example) to notify listeners when an observable has started a background
22 * thread for updating its state. Clients can safely ignore staleness.
23 *
24 * @see IObservable#isStale()
25 *
26 * @since 1.0
27 *
28 */
29 public class StaleEvent : ObservableEvent {
30
31 /**
32 * Creates a new stale event.
33 *
34 * @param source
35 * the source observable
36 */
37 public this(IObservable source) {
38 super(source);
39 }
40
41 /**
42 *
43 */
44 private static final long serialVersionUID = 3491012225431471077L;
45
46 static final Object TYPE = new Object();
47
48 protected void dispatch(IObservablesListener listener) {
49 (cast(IStaleListener) listener).handleStale(this);
50 }
51
52 protected Object getListenerType() {
53 return TYPE;
54 }
55
56 }