1 /* DropTargetContext.java --
2 Copyright (C) 2002, 2003, 2004, 2005, 2006 Free Software Foundation
4 This file is part of GNU Classpath.
6 GNU Classpath is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU Classpath is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU Classpath; see the file COPYING. If not, write to the
18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
21 Linking this library statically or dynamically with other modules is
22 making a combined work based on this library. Thus, the terms and
23 conditions of the GNU General Public License cover the whole
26 As a special exception, the copyright holders of this library give you
27 permission to link this library with independent modules to produce an
28 executable, regardless of the license terms of these independent
29 modules, and to copy and distribute the resulting executable under
30 terms of your choice, provided that you also meet, for each linked
31 independent module, the terms and conditions of the license of that
32 module. An independent module is a module which is not derived from
33 or based on this library. If you modify this library, you may extend
34 this exception to your version of the library, but you are not
35 obligated to do so. If you do not wish to do so, delete this
36 exception statement from your version. */
40 import java.awt.Component;
41 import java.awt.datatransfer.DataFlavor;
42 import java.awt.datatransfer.Transferable;
43 import java.awt.datatransfer.UnsupportedFlavorException;
44 import java.awt.dnd.peer.DropTargetContextPeer;
45 import java.io.IOException;
46 import java.io.Serializable;
47 import java.util.Arrays;
48 import java.util.List;
51 * @author Michael Koch (konqueror@gmx.de)
52 * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
55 public class DropTargetContext implements Serializable
57 static final long serialVersionUID = -634158968993743371L;
59 protected class TransferableProxy implements Transferable
61 protected boolean isLocal;
62 protected Transferable transferable;
64 TransferableProxy(Transferable t, boolean local)
66 this.transferable = t;
70 public DataFlavor[] getTransferDataFlavors()
72 return transferable.getTransferDataFlavors();
75 public boolean isDataFlavorSupported(DataFlavor flavor)
77 return transferable.isDataFlavorSupported(flavor);
80 public Object getTransferData(DataFlavor flavor)
81 throws UnsupportedFlavorException, IOException
83 return transferable.getTransferData (flavor);
87 private DropTarget dropTarget;
88 private int targetActions;
89 private DropTargetContextPeer dtcp;
92 DropTargetContext(DropTarget dropTarget)
94 this.dropTarget = dropTarget;
97 public DropTarget getDropTarget()
102 public Component getComponent()
104 return dropTarget.getComponent();
107 public void addNotify(DropTargetContextPeer dtcp)
112 public void removeNotify()
117 protected void setTargetActions(int actions)
119 targetActions = actions;
122 protected int getTargetActions()
124 return targetActions;
128 * Signals that the drop is completed.
130 * @exception InvalidDnDOperationException If a drop is not outstanding.
132 public void dropComplete (boolean success)
135 dtcp.dropComplete(success);
138 protected void acceptDrag (int dragOperation)
141 dtcp.acceptDrag(dragOperation);
144 protected void rejectDrag ()
150 protected void acceptDrop (int dropOperation)
153 dtcp.acceptDrop(dropOperation);
156 protected void rejectDrop ()
162 protected DataFlavor[] getCurrentDataFlavors ()
165 dtcp.getTransferDataFlavors();
169 protected List<DataFlavor> getCurrentDataFlavorsAsList ()
171 return Arrays.asList(getCurrentDataFlavors ());
174 protected boolean isDataFlavorSupported (DataFlavor flavor)
176 return getCurrentDataFlavorsAsList().contains (flavor);
180 * Return the <code>Transferable</code> operandof this operation.
182 * @exception InvalidDnDOperationException If a drag is not outstanding.
184 protected Transferable getTransferable()
185 throws InvalidDnDOperationException
187 // FIXME: Implement this
189 return dtcp.getTransferable();
193 protected Transferable createTransferableProxy(Transferable t, boolean local)
195 return new TransferableProxy(t, local);
197 } // class DropTargetContext