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


1 /*******************************************************************************
2  * Copyright (c) 2000, 2003 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 import org.eclipse.swt.internal.SWTEventListener;
15
16 /**
17  * Classes which implement this interface provide methods
18  * that deal with the events that are generated as the mouse
19  * pointer passes (or hovers) over controls.
20  * <p>
21  * After creating an instance of a class that implements
22  * this interface it can be added to a control using the
23  * <code>addMouseTrackListener</code> method and removed using
24  * the <code>removeMouseTrackListener</code> method. When the
25  * mouse pointer passes into or out of the area of the screen
26  * covered by a control or pauses while over a control, the
27  * appropriate method will be invoked.
28  * </p>
29  *
30  * @see MouseTrackAdapter
31  * @see MouseEvent
32  */
33 public interface MouseTrackListener extends SWTEventListener {
34
35 /**
36  * Sent when the mouse pointer passes into the area of
37  * the screen covered by a control.
38  *
39  * @param e an event containing information about the mouse enter
40  */
41 public void mouseEnter(MouseEvent e);
42
43 /**
44  * Sent when the mouse pointer passes out of the area of
45  * the screen covered by a control.
46  *
47  * @param e an event containing information about the mouse exit
48  */
49 public void mouseExit(MouseEvent e);
50
51 /**
52  * Sent when the mouse pointer hovers (that is, stops moving
53  * for an (operating system specified) period of time) over
54  * a control.
55  *
56  * @param e an event containing information about the hover
57  */
58 public void mouseHover(MouseEvent e);
59 }
60
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