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comparison dwtx/core/commands/common/AbstractHandleObjectEvent.d @ 3:6518c18a01f7

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eclipse.core package without osgi dependencies
author Frank Benoit <benoit@tionex.de>
date Wed, 26 Mar 2008 00:57:19 +0100
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2:a012107a911c 3:6518c18a01f7
1 /*******************************************************************************
2 * Copyright (c) 2005 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 * Port to the D programming language:
11 * Frank Benoit <benoit@tionex.de>
12 ******************************************************************************/
13
14 module dwtx.core.commands.common.AbstractHandleObjectEvent;
15
16 import dwtx.core.commands.common.AbstractBitSetEvent;
17
18 /**
19 * <p>
20 * An event fired from a <code>NamedHandleObject</code>. This provides
21 * notification of changes to the defined state, the name and the description.
22 * </p>
23 *
24 * @since 3.2
25 */
26 public abstract class AbstractHandleObjectEvent : AbstractBitSetEvent {
27
28 /**
29 * The bit used to represent whether the category has changed its defined
30 * state.
31 */
32 protected static const int CHANGED_DEFINED = 1;
33
34 /**
35 * The last used bit so that subclasses can add more properties.
36 */
37 protected static const int LAST_BIT_USED_ABSTRACT_HANDLE = CHANGED_DEFINED;
38
39 /**
40 * Constructs a new instance of <code>AbstractHandleObjectEvent</code>.
41 *
42 * @param definedChanged
43 * <code>true</code>, iff the defined property changed.
44 */
45 protected this( bool definedChanged) {
46 if (definedChanged) {
47 changedValues |= CHANGED_DEFINED;
48 }
49 }
50
51 /**
52 * Returns whether or not the defined property changed.
53 *
54 * @return <code>true</code>, iff the defined property changed.
55 */
56 public final bool isDefinedChanged() {
57 return ((changedValues & CHANGED_DEFINED) !is 0);
58 }
59 }