jdk/src/share/classes/java/awt/event/MouseMotionAdapter.java
author tbell
Wed, 07 Oct 2009 14:15:01 -0700
changeset 3965 63aae8ce7f47
parent 2 90ce3da70b43
child 5506 202f599c92aa
permissions -rw-r--r--
Merge
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/*
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 * Copyright 1996-2006 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Sun designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Sun in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 */
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package java.awt.event;
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/**
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 * An abstract adapter class for receiving mouse motion events.
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 * The methods in this class are empty. This class exists as
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 * convenience for creating listener objects.
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 * <P>
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 * Mouse motion events occur when a mouse is moved or dragged.
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 * (Many such events will be generated in a normal program.
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 * To track clicks and other mouse events, use the MouseAdapter.)
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 * <P>
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 * Extend this class to create a <code>MouseEvent</code> listener
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 * and override the methods for the events of interest. (If you implement the
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 * <code>MouseMotionListener</code> interface, you have to define all of
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 * the methods in it. This abstract class defines null methods for them
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 * all, so you can only have to define methods for events you care about.)
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 * <P>
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 * Create a listener object using the extended class and then register it with
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 * a component using the component's <code>addMouseMotionListener</code>
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 * method. When the mouse is moved or dragged, the relevant method in the
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 * listener object is invoked and the <code>MouseEvent</code> is passed to it.
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 *
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 * @author Amy Fowler
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 *
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 * @see MouseEvent
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 * @see MouseMotionListener
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 * @see <a href="http://java.sun.com/docs/books/tutorial/post1.0/ui/mousemotionlistener.html">Tutorial: Writing a Mouse Motion Listener</a>
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 *
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 * @since 1.1
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 */
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public abstract class MouseMotionAdapter implements MouseMotionListener {
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    /**
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     * Invoked when a mouse button is pressed on a component and then
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     * dragged.  Mouse drag events will continue to be delivered to
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     * the component where the first originated until the mouse button is
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     * released (regardless of whether the mouse position is within the
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     * bounds of the component).
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     */
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    public void mouseDragged(MouseEvent e) {}
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    /**
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     * Invoked when the mouse button has been moved on a component
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     * (with no buttons no down).
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     */
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    public void mouseMoved(MouseEvent e) {}
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}