| /* DragSourceListener.java -- listen to events during the drag |
| Copyright (C) 2002, 2005 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package java.awt.dnd; |
| |
| import java.util.EventListener; |
| |
| /** |
| * This class allows an object to listen for drag and drop events. It can |
| * be used to provide appropriate feedback for "drag over" actions. You can |
| * also use a <code>DragSourceAdapter</code> to filter the events you are |
| * interested in. |
| * |
| * @author Eric Blake (ebb9@email.byu.edu) |
| * @since 1.2 |
| * @status updated to 1.4 |
| */ |
| public interface DragSourceListener extends EventListener |
| { |
| /** |
| * Called when the cursor hotspot enters a drop site which will accept the |
| * drag. |
| * |
| * @param e the drag source drag event |
| */ |
| void dragEnter(DragSourceDragEvent e); |
| |
| /** |
| * Called when the cursor hotspot moves inside of a drop site which will |
| * accept the drag. |
| * |
| * @param e the drag source drag event |
| */ |
| void dragOver(DragSourceDragEvent e); |
| |
| /** |
| * Called when the user modifies the drop gesture. This is often the case |
| * when additional mouse or key events are received during the drag. |
| * |
| * @param e the drag source drag event |
| */ |
| void dropActionChanged(DragSourceDragEvent e); |
| |
| /** |
| * Called when the cursor hotspot moves outside of a drop site which will |
| * accept the drag. This could also happen if the drop site is no longer |
| * active, or no longer accepts the drag. |
| * |
| * @param e the drag source drag event |
| */ |
| void dragExit(DragSourceEvent e); |
| |
| /** |
| * Called when the drag and drop operation is complete. After this event, |
| * <code>getDropSuccess</code> of the event is valid, and |
| * <code>getDropAction</code> holds the action requested by the drop site. |
| * Furthermore, the <code>DragSourceContext</code> is invalidated. |
| * |
| * @param e the drag source drag event |
| */ |
| void dragDropEnd(DragSourceDropEvent e); |
| } // interface DragSourceListener |