| /* DropTargetContext.java -- |
| Copyright (C) 2002, 2003, 2004, 2006, Free Software Foundation |
| |
| 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., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 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.awt.Component; |
| import java.awt.datatransfer.DataFlavor; |
| import java.awt.datatransfer.Transferable; |
| import java.awt.datatransfer.UnsupportedFlavorException; |
| import java.awt.dnd.peer.DropTargetContextPeer; |
| import java.io.IOException; |
| import java.io.Serializable; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * @author Michael Koch (konqueror@gmx.de) |
| * @since 1.2 |
| */ |
| public class DropTargetContext implements Serializable |
| { |
| static final long serialVersionUID = -634158968993743371L; |
| |
| protected class TransferableProxy implements Transferable |
| { |
| protected boolean isLocal; |
| protected Transferable transferable; |
| |
| TransferableProxy(Transferable t, boolean local) |
| { |
| this.transferable = t; |
| this.isLocal = local; |
| } |
| |
| public DataFlavor[] getTransferDataFlavors() |
| { |
| return transferable.getTransferDataFlavors(); |
| } |
| |
| public boolean isDataFlavorSupported(DataFlavor flavor) |
| { |
| return transferable.isDataFlavorSupported(flavor); |
| } |
| |
| public Object getTransferData(DataFlavor flavor) |
| throws UnsupportedFlavorException, IOException |
| { |
| return transferable.getTransferData (flavor); |
| } |
| } |
| |
| private DropTarget dropTarget; |
| private int targetActions; |
| private DropTargetContextPeer dtcp; |
| |
| // package private |
| DropTargetContext(DropTarget dropTarget) |
| { |
| this.dropTarget = dropTarget; |
| } |
| |
| public DropTarget getDropTarget() |
| { |
| return dropTarget; |
| } |
| |
| public Component getComponent() |
| { |
| return dropTarget.getComponent(); |
| } |
| |
| public void addNotify(DropTargetContextPeer dtcp) |
| { |
| this.dtcp = dtcp; |
| } |
| |
| public void removeNotify() |
| { |
| this.dtcp = null; |
| } |
| |
| protected void setTargetActions(int actions) |
| { |
| targetActions = actions; |
| } |
| |
| protected int getTargetActions() |
| { |
| return targetActions; |
| } |
| |
| /** |
| * Signals that the drop is completed. |
| * |
| * @exception InvalidDnDOperationException If a drop is not outstanding. |
| */ |
| public void dropComplete(boolean success) |
| { |
| if (dtcp != null) |
| dtcp.dropComplete(success); |
| } |
| |
| protected void acceptDrag(int dragOperation) |
| { |
| if (dtcp != null) |
| dtcp.acceptDrag(dragOperation); |
| } |
| |
| protected void rejectDrag() |
| { |
| if (dtcp != null) |
| dtcp.rejectDrag(); |
| } |
| |
| protected void acceptDrop(int dropOperation) |
| { |
| if (dtcp != null) |
| dtcp.acceptDrop(dropOperation); |
| } |
| |
| protected void rejectDrop() |
| { |
| if (dtcp != null) |
| dtcp.rejectDrop(); |
| } |
| |
| protected DataFlavor[] getCurrentDataFlavors() |
| { |
| if (dtcp != null) |
| dtcp.getTransferDataFlavors(); |
| return null; |
| } |
| |
| protected List getCurrentDataFlavorsAsList() |
| { |
| return Arrays.asList(getCurrentDataFlavors()); |
| } |
| |
| protected boolean isDataFlavorSupported(DataFlavor flavor) |
| { |
| return getCurrentDataFlavorsAsList().contains(flavor); |
| } |
| |
| /** |
| * Return the <code>Transferable</code> operandof this operation. |
| * |
| * @exception InvalidDnDOperationException If a drag is not outstanding. |
| */ |
| protected Transferable getTransferable() |
| throws InvalidDnDOperationException |
| { |
| // FIXME: Implement this |
| if (dtcp != null) |
| return dtcp.getTransferable(); |
| return null; |
| } |
| |
| protected Transferable createTransferableProxy(Transferable t, boolean local) |
| { |
| return new TransferableProxy(t, local); |
| } |
| } // class DropTargetContext |