/******************************************************************************* * Copyright (c) 2000, 2004 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Common Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/cpl-v10.html *  * Contributors: *     IBM Corporation - initial API and implementation *******************************************************************************/package org.eclipse.swt.events;/** * This adapter class provides default implementations for the * methods described by the <code>MouseTrackListener</code> interface. * <p> * Classes that wish to deal with <code>MouseEvent</code>s which * occur as the mouse pointer passes (or hovers) over controls can * extend this class and override only the methods which they are * interested in. * </p> * * @see MouseTrackListener * @see MouseEvent */public abstract class MouseTrackAdapter implements MouseTrackListener {/** * Sent when the mouse pointer passes into the area of * the screen covered by a control. * The default behavior is to do nothing. * * @param e an event containing information about the mouse enter */public void mouseEnter(MouseEvent e) {}/** * Sent when the mouse pointer passes out of the area of * the screen covered by a control. * The default behavior is to do nothing. * * @param e an event containing information about the mouse exit */public void mouseExit(MouseEvent e) {}/** * Sent when the mouse pointer hovers (that is, stops moving * for an (operating system specified) period of time) over * a control. * The default behavior is to do nothing. * * @param e an event containing information about the hover */public void mouseHover(MouseEvent e) {}}