001 /*
002 * Copyright 1997-2007 Sun Microsystems, Inc. All Rights Reserved.
003 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004 *
005 * This code is free software; you can redistribute it and/or modify it
006 * under the terms of the GNU General Public License version 2 only, as
007 * published by the Free Software Foundation. Sun designates this
008 * particular file as subject to the "Classpath" exception as provided
009 * by Sun in the LICENSE file that accompanied this code.
010 *
011 * This code is distributed in the hope that it will be useful, but WITHOUT
012 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
014 * version 2 for more details (a copy is included in the LICENSE file that
015 * accompanied this code).
016 *
017 * You should have received a copy of the GNU General Public License version
018 * 2 along with this work; if not, write to the Free Software Foundation,
019 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020 *
021 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022 * CA 95054 USA or visit www.sun.com if you need additional information or
023 * have any questions.
024 */
025
026 package java.awt.dnd.peer;
027
028 import java.awt.datatransfer.DataFlavor;
029 import java.awt.datatransfer.Transferable;
030 import java.awt.dnd.DropTarget;
031 import java.awt.dnd.InvalidDnDOperationException;
032
033 /**
034 * <p>
035 * This interface is exposed by the underlying window system platform to
036 * enable control of platform DnD operations
037 * </p>
038 *
039 * @version 1.22, 06/05/07
040 * @since 1.2
041 *
042 */
043
044 public interface DropTargetContextPeer {
045
046 /**
047 * update the peer's notion of the Target's actions
048 */
049
050 void setTargetActions(int actions);
051
052 /**
053 * get the current Target actions
054 */
055
056 int getTargetActions();
057
058 /**
059 * get the DropTarget associated with this peer
060 */
061
062 DropTarget getDropTarget();
063
064 /**
065 * get the (remote) DataFlavors from the peer
066 */
067
068 DataFlavor[] getTransferDataFlavors();
069
070 /**
071 * get an input stream to the remote data
072 */
073
074 Transferable getTransferable() throws InvalidDnDOperationException;
075
076 /**
077 * @return if the DragSource Transferable is in the same JVM as the Target
078 */
079
080 boolean isTransferableJVMLocal();
081
082 /**
083 * accept the Drag
084 */
085
086 void acceptDrag(int dragAction);
087
088 /**
089 * reject the Drag
090 */
091
092 void rejectDrag();
093
094 /**
095 * accept the Drop
096 */
097
098 void acceptDrop(int dropAction);
099
100 /**
101 * reject the Drop
102 */
103
104 void rejectDrop();
105
106 /**
107 * signal complete
108 */
109
110 void dropComplete(boolean success);
111
112 }
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