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comparison org.eclipse.core.databinding.observable/src/org/eclipse/core/databinding/observable/value/ValueChangeEvent.d @ 95:6208d4f6a277

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Added trees for databinding.beans and observable
author Frank Benoit <benoit@tionex.de>
date Tue, 21 Apr 2009 10:55:51 +0200
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children b74ac5dfcc06
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94:1d37a7813832 95:6208d4f6a277
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 package org.eclipse.core.databinding.observable.value;
13
14 import org.eclipse.core.databinding.observable.IObservablesListener;
15 import org.eclipse.core.databinding.observable.ObservableEvent;
16
17 /**
18 * Value change event describing a change of an {@link IObservableValue}
19 * object's current value.
20 *
21 * @since 1.0
22 *
23 */
24 public class ValueChangeEvent : ObservableEvent {
25
26 /**
27 *
28 */
29 private static final long serialVersionUID = 2305345286999701156L;
30
31 static final Object TYPE = new Object();
32
33 /**
34 * Description of the change to the source observable value. Listeners must
35 * not change this field.
36 */
37 public ValueDiff diff;
38
39 /**
40 * Creates a new value change event.
41 *
42 * @param source
43 * the source observable value
44 * @param diff
45 * the value change
46 */
47 public this(IObservableValue source, ValueDiff diff) {
48 super(source);
49 this.diff = diff;
50 }
51
52 /**
53 * Returns the observable value from which this event originated.
54 *
55 * @return returns the observable value from which this event originated
56 */
57 public IObservableValue getObservableValue() {
58 return cast(IObservableValue) source;
59 }
60
61 protected void dispatch(IObservablesListener listener) {
62 (cast(IValueChangeListener) listener).handleValueChange(this);
63 }
64
65 protected Object getListenerType() {
66 return TYPE;
67 }
68
69 }