J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1996-2006 Sun Microsystems, Inc. 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. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package java.awt.event; |
| 27 | |
| 28 | /** |
| 29 | * An abstract adapter class for receiving mouse motion events. |
| 30 | * The methods in this class are empty. This class exists as |
| 31 | * convenience for creating listener objects. |
| 32 | * <P> |
| 33 | * Mouse motion events occur when a mouse is moved or dragged. |
| 34 | * (Many such events will be generated in a normal program. |
| 35 | * To track clicks and other mouse events, use the MouseAdapter.) |
| 36 | * <P> |
| 37 | * Extend this class to create a <code>MouseEvent</code> listener |
| 38 | * and override the methods for the events of interest. (If you implement the |
| 39 | * <code>MouseMotionListener</code> interface, you have to define all of |
| 40 | * the methods in it. This abstract class defines null methods for them |
| 41 | * all, so you can only have to define methods for events you care about.) |
| 42 | * <P> |
| 43 | * Create a listener object using the extended class and then register it with |
| 44 | * a component using the component's <code>addMouseMotionListener</code> |
| 45 | * method. When the mouse is moved or dragged, the relevant method in the |
| 46 | * listener object is invoked and the <code>MouseEvent</code> is passed to it. |
| 47 | * |
| 48 | * @author Amy Fowler |
| 49 | * |
| 50 | * @see MouseEvent |
| 51 | * @see MouseMotionListener |
| 52 | * @see <a href="http://java.sun.com/docs/books/tutorial/post1.0/ui/mousemotionlistener.html">Tutorial: Writing a Mouse Motion Listener</a> |
| 53 | * |
| 54 | * @since 1.1 |
| 55 | */ |
| 56 | public abstract class MouseMotionAdapter implements MouseMotionListener { |
| 57 | /** |
| 58 | * Invoked when a mouse button is pressed on a component and then |
| 59 | * dragged. Mouse drag events will continue to be delivered to |
| 60 | * the component where the first originated until the mouse button is |
| 61 | * released (regardless of whether the mouse position is within the |
| 62 | * bounds of the component). |
| 63 | */ |
| 64 | public void mouseDragged(MouseEvent e) {} |
| 65 | |
| 66 | /** |
| 67 | * Invoked when the mouse button has been moved on a component |
| 68 | * (with no buttons no down). |
| 69 | */ |
| 70 | public void mouseMoved(MouseEvent e) {} |
| 71 | } |