1 /* 2 * Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package java.awt.event; 27 28 import java.util.EventListener; 29 30 /** 31 * The listener interface for receiving mouse wheel events on a component. 32 * (For clicks and other mouse events, use the <code>MouseListener</code>. 33 * For mouse movement and drags, use the <code>MouseMotionListener</code>.) 34 * <P> 35 * The class that is interested in processing a mouse wheel event 36 * implements this interface (and all the methods it contains). 37 * <P> 38 * The listener object created from that class is then registered with a 39 * component using the component's <code>addMouseWheelListener</code> 40 * method. A mouse wheel event is generated when the mouse wheel is rotated. 41 * When a mouse wheel event occurs, that object's <code>mouseWheelMoved</code> 42 * method is invoked. 43 * <p> 44 * For information on how mouse wheel events are dispatched, see 45 * the class description for {@link MouseWheelEvent}. 46 * 47 * @author Brent Christian 48 * @see MouseWheelEvent 49 * @since 1.4 50 */ 51 public interface MouseWheelListener extends EventListener { 52 53 /** 54 * Invoked when the mouse wheel is rotated. 55 * @see MouseWheelEvent 56 */ 57 public void mouseWheelMoved(MouseWheelEvent e); 58 }