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comparison org.eclipse.jface.databinding/src/org/eclipse/jface/internal/databinding/provisional/swt/AbstractSWTObservableValue.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 The Pampered Chef, Inc. 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 * The Pampered Chef, Inc. - initial API and implementation
10 ******************************************************************************/
11
12 module org.eclipse.jface.internal.databinding.provisional.swt.AbstractSWTObservableValue;
13
14 import java.lang.all;
15
16 import org.eclipse.core.databinding.observable.Realm;
17 import org.eclipse.core.databinding.observable.value.AbstractObservableValue;
18 import org.eclipse.jface.databinding.swt.ISWTObservableValue;
19 import org.eclipse.jface.databinding.swt.SWTObservables;
20 import org.eclipse.swt.events.DisposeEvent;
21 import org.eclipse.swt.events.DisposeListener;
22 import org.eclipse.swt.widgets.Widget;
23
24 /**
25 * NON-API - An abstract superclass for observable values that gurantees that the
26 * observable will be disposed when the control to which it is attached is
27 * disposed.
28 *
29 * @since 1.1
30 */
31 public abstract class AbstractSWTObservableValue : AbstractObservableValue , ISWTObservableValue {
32
33 private final Widget widget;
34
35 /**
36 * Standard constructor for an SWT ObservableValue. Makes sure that
37 * the observable gets disposed when the SWT widget is disposed.
38 *
39 * @param widget
40 */
41 protected this(Widget widget) {
42 this(SWTObservables.getRealm(widget.getDisplay()), widget);
43 }
44
45 /**
46 * Constructor that allows for the setting of the realm. Makes sure that the
47 * observable gets disposed when the SWT widget is disposed.
48 *
49 * @param realm
50 * @param widget
51 * @since 1.2
52 */
53 protected this(Realm realm, Widget widget) {
54 super(realm);
55 this.widget = widget;
56 widget.addDisposeListener(disposeListener);
57 }
58
59 private DisposeListener disposeListener = new class() DisposeListener {
60 public void widgetDisposed(DisposeEvent e) {
61 this.outer.dispose();
62 }
63 };
64
65 /**
66 * @return Returns the widget.
67 */
68 public Widget getWidget() {
69 return widget;
70 }
71 }