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Java > Open Source Codes > org > eclipse > swt > events > MouseTrackAdapter


1 /*******************************************************************************
2  * Copyright (c) 2000, 2004 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 package org.eclipse.swt.events;
12
13
14 /**
15  * This adapter class provides default implementations for the
16  * methods described by the <code>MouseTrackListener</code> interface.
17  * <p>
18  * Classes that wish to deal with <code>MouseEvent</code>s which
19  * occur as the mouse pointer passes (or hovers) over controls can
20  * extend this class and override only the methods which they are
21  * interested in.
22  * </p>
23  *
24  * @see MouseTrackListener
25  * @see MouseEvent
26  */
27 public abstract class MouseTrackAdapter implements MouseTrackListener {
28
29 /**
30  * Sent when the mouse pointer passes into the area of
31  * the screen covered by a control.
32  * The default behavior is to do nothing.
33  *
34  * @param e an event containing information about the mouse enter
35  */
36 public void mouseEnter(MouseEvent e) {
37 }
38
39 /**
40  * Sent when the mouse pointer passes out of the area of
41  * the screen covered by a control.
42  * The default behavior is to do nothing.
43  *
44  * @param e an event containing information about the mouse exit
45  */
46 public void mouseExit(MouseEvent e) {
47 }
48
49 /**
50  * Sent when the mouse pointer hovers (that is, stops moving
51  * for an (operating system specified) period of time) over
52  * a control.
53  * The default behavior is to do nothing.
54  *
55  * @param e an event containing information about the hover
56  */
57 public void mouseHover(MouseEvent e) {
58 }
59 }
60
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