< prev index next >

src/java.desktop/share/classes/java/awt/event/MouseMotionAdapter.java

Print this page


   1 /*
   2  * Copyright (c) 1996, 2013, 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


  37  * Extend this class to create a {@code MouseEvent} listener
  38  * and override the methods for the events of interest. (If you implement the
  39  * {@code MouseMotionListener} 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}
  45  * method. When the mouse is moved or dragged, the relevant method in the
  46  * listener object is invoked and the {@code MouseEvent} is passed to it.
  47  *
  48  * @author Amy Fowler
  49  *
  50  * @see MouseEvent
  51  * @see MouseMotionListener
  52  * @see <a href="https://docs.oracle.com/javase/tutorial/uiswing/events/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 }
   1 /*
   2  * Copyright (c) 1996, 2020, 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


  37  * Extend this class to create a {@code MouseEvent} listener
  38  * and override the methods for the events of interest. (If you implement the
  39  * {@code MouseMotionListener} 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}
  45  * method. When the mouse is moved or dragged, the relevant method in the
  46  * listener object is invoked and the {@code MouseEvent} is passed to it.
  47  *
  48  * @author Amy Fowler
  49  *
  50  * @see MouseEvent
  51  * @see MouseMotionListener
  52  * @see <a href="https://docs.oracle.com/javase/tutorial/uiswing/events/mousemotionlistener.html">Tutorial: Writing a Mouse Motion Listener</a>
  53  *
  54  * @since 1.1
  55  */
  56 public abstract class MouseMotionAdapter implements MouseMotionListener {
  57 
  58     /**
  59      * Constructs a {@code MouseMotionAdapter}.
  60      */
  61     protected MouseMotionAdapter() {}
  62 
  63     /**
  64      * Invoked when a mouse button is pressed on a component and then
  65      * dragged.  Mouse drag events will continue to be delivered to
  66      * the component where the first originated until the mouse button is
  67      * released (regardless of whether the mouse position is within the
  68      * bounds of the component).
  69      */
  70     public void mouseDragged(MouseEvent e) {}
  71 
  72     /**
  73      * Invoked when the mouse button has been moved on a component
  74      * (with no buttons no down).
  75      */
  76     public void mouseMoved(MouseEvent e) {}
  77 }
< prev index next >