2362N/A * Copyright (c) 1996, 2006, Oracle and/or its affiliates. All rights reserved. 0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 0N/A * This code is free software; you can redistribute it and/or modify it 0N/A * under the terms of the GNU General Public License version 2 only, as 2362N/A * published by the Free Software Foundation. Oracle designates this 0N/A * particular file as subject to the "Classpath" exception as provided 2362N/A * by Oracle in the LICENSE file that accompanied this code. 0N/A * This code is distributed in the hope that it will be useful, but WITHOUT 0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 0N/A * version 2 for more details (a copy is included in the LICENSE file that 0N/A * accompanied this code). 0N/A * You should have received a copy of the GNU General Public License version 0N/A * 2 along with this work; if not, write to the Free Software Foundation, 0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 2362N/A * or visit www.oracle.com if you need additional information or have any 0N/A * An abstract adapter class for receiving mouse events. 0N/A * The methods in this class are empty. This class exists as 0N/A * convenience for creating listener objects. 0N/A * Mouse events let you track when a mouse is pressed, released, clicked, 0N/A * moved, dragged, when it enters a component, when it exits and 0N/A * when a mouse wheel is moved. 0N/A * Extend this class to create a {@code MouseEvent} 0N/A * (including drag and motion events) or/and {@code MouseWheelEvent} 0N/A * listener and override the methods for the events of interest. (If you implement the 0N/A * {@code MouseListener}, 0N/A * {@code MouseMotionListener} 0N/A * interface, you have to define all of 0N/A * the methods in it. This abstract class defines null methods for them 0N/A * all, so you can only have to define methods for events you care about.) 0N/A * Create a listener object using the extended class and then register it with 0N/A * a component using the component's {@code addMouseListener} 0N/A * {@code addMouseMotionListener}, {@code addMouseWheelListener} 0N/A * The relevant method in the listener object is invoked and the {@code MouseEvent} 0N/A * or {@code MouseWheelEvent} is passed to it in following cases: 0N/A * <li>when a mouse button is pressed, released, or clicked (pressed and released) 0N/A * <li>when the mouse cursor enters or exits the component 0N/A * <li>when the mouse wheel rotated, or mouse moved or dragged 0N/A * @author Carl Quinn 0N/A * @author Andrei Dmitriev 0N/A * @see MouseWheelEvent 0N/A * @see MouseListener 0N/A * @see MouseMotionListener 0N/A * @see MouseWheelListener