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comparison dwtx/core/commands/IStateListener.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, 2006 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.IStateListener;
15
16 import dwtx.core.commands.State;
17
18 /**
19 * <p>
20 * A listener to changes in some state.
21 * </p>
22 * <p>
23 * Clients may implement, but must not extend this interface.
24 * </p>
25 *
26 * @since 3.2
27 */
28 public interface IStateListener {
29
30 /**
31 * Handles a change to the value in some state.
32 *
33 * @param state
34 * The state that has changed; never <code>null</code>. The
35 * value for this state has been updated to the new value.
36 * @param oldValue
37 * The old value; may be anything.
38 */
39 public void handleStateChange(State state, Object oldValue);
40 }