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Java > Open Source Codes > org > eclipse > swt > dnd > DropTargetAdapter


1 /*******************************************************************************
2  * Copyright (c) 2000, 2004 IBM Corporation and others.
3  * All rights reserved. This program and the accompanying materials
4  * are made available under the terms of the Eclipse Public License v1.0
5  * which accompanies this distribution, and is available at
6  * http://www.eclipse.org/legal/epl-v10.html
7  *
8  * Contributors:
9  * IBM Corporation - initial API and implementation
10  *******************************************************************************/
11 package org.eclipse.swt.dnd;
12
13
14 /**
15  * This adapter class provides default implementations for the
16  * methods described by the <code>DropTargetListener</code> interface.
17  * <p>
18  * Classes that wish to deal with <code>DropTargetEvent</code>s can
19  * extend this class and override only the methods which they are
20  * interested in.
21  * </p>
22  *
23  * @see DropTargetListener
24  * @see DropTargetEvent
25  */
26 public class DropTargetAdapter implements DropTargetListener {
27
28 /**
29  * This implementation of <code>dragEnter</code> permits the default
30  * operation defined in <code>event.detail</code>to be performed on the current data type
31  * defined in <code>event.currentDataType</code>.
32  * For additional information see <code>DropTargetListener.dragEnter</code>.
33  */
34 public void dragEnter(DropTargetEvent event){}
35 /**
36  * This implementation of <code>dragLeave</code> does nothing.
37  * For additional information see <code>DropTargetListener.dragOperationChanged</code>.
38  */
39 public void dragLeave(DropTargetEvent event){}
40 /**
41  * This implementation of <code>dragOperationChanged</code> permits the default
42  * operation defined in <code>event.detail</code>to be performed on the current data type
43  * defined in <code>event.currentDataType</code>.
44  * For additional information see <code>DropTargetListener.dragOperationChanged</code>.
45  */
46 public void dragOperationChanged(DropTargetEvent event){}
47 /**
48  * This implementation of <code>dragOver</code> permits the default
49  * operation defined in <code>event.detail</code>to be performed on the current data type
50  * defined in <code>event.currentDataType</code>.
51  * For additional information see <code>DropTargetListener.dragOver</code>.
52  */
53 public void dragOver(DropTargetEvent event){}
54 /**
55  * This implementation of <code>drop</code> does nothing.
56  * For additional information see <code>DropTargetListener.drop</code>.
57  */
58 public void drop(DropTargetEvent event){}
59 /**
60  * This implementation of <code>dropAccept</code> permits the default
61  * operation defined in <code>event.detail</code>to be performed on the current data type
62  * defined in <code>event.currentDataType</code>.
63  * For additional information see <code>DropTargetListener.dropAccept</code>.
64  */
65 public void dropAccept(DropTargetEvent event){}
66
67 }
68
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