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Java > Open Source Codes > org > eclipse > ui > internal > navigator > dnd > SkeletonCommonDropAssistant


1 /*******************************************************************************
2  * Copyright (c) 2006 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
12 package org.eclipse.ui.internal.navigator.dnd;
13
14 import org.eclipse.core.runtime.IStatus;
15 import org.eclipse.core.runtime.Status;
16 import org.eclipse.swt.dnd.DropTargetEvent;
17 import org.eclipse.swt.dnd.TransferData;
18 import org.eclipse.ui.navigator.CommonDropAdapter;
19 import org.eclipse.ui.navigator.CommonDropAdapterAssistant;
20
21 /**
22  * A Skeleton implementation of {@link CommonDropAdapterAssistant}.
23  *
24  * @since 3.2
25  *
26  */
27 public class SkeletonCommonDropAssistant extends CommonDropAdapterAssistant {
28
29     /**
30      * The singleton instance.
31      */
32     public static final SkeletonCommonDropAssistant INSTANCE = new SkeletonCommonDropAssistant();
33
34     private SkeletonCommonDropAssistant() {
35     }
36
37     /*
38      * (non-Javadoc)
39      *
40      * @see org.eclipse.ui.navigator.CommonDropAdapterAssistant#handleDrop(org.eclipse.ui.navigator.CommonDropAdapter,
41      * org.eclipse.swt.dnd.DropTargetEvent, java.lang.Object)
42      */
43     public IStatus handleDrop(CommonDropAdapter aDropAdapter,
44             DropTargetEvent aDropTargetEvent, Object JavaDoc aTarget) {
45         return Status.CANCEL_STATUS;
46     }
47
48     /*
49      * (non-Javadoc)
50      *
51      * @see org.eclipse.ui.navigator.CommonDropAdapterAssistant#validateDrop(java.lang.Object,
52      * int, org.eclipse.swt.dnd.TransferData)
53      */
54     public IStatus validateDrop(Object JavaDoc target, int operation,
55             TransferData transferType) {
56         return Status.CANCEL_STATUS;
57     }
58
59     // /*
60 // * (non-Javadoc)
61 // *
62 // * @see
63 // org.eclipse.ui.navigator.CommonDropAdapterAssistant#findSupportedTransferData(org.eclipse.swt.dnd.TransferData[])
64 // */
65 // public TransferData findSupportedTransferData(
66 // TransferData[] theAvailableTransferData) {
67 //
68 // return null;
69 // }
70
71 }
72
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