Initial revision

From-SVN: r102074

libjava/classpath/java/awt/dnd/DropTargetContext.java

@@ -0,0 +1,188 @@
+/* DropTargetContext.java --
+   Copyright (C) 2002, 2003, 2004  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.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;
+
+  /** @specnote According to the online documentation, this is
+   * protected, but in reality it is public.  */
+  public 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 java.awt.dnd.peer.DropTargetContextPeer dtcp;
+
+  // package private
+  DropTargetContext (DropTarget dropTarget)
+  {
+    this.dropTarget = dropTarget;
+  }
+
+  public DropTarget getDropTarget ()
+  {
+    return dropTarget;
+  }
+
+  public Component getComponent ()
+  {
+    return dropTarget.getComponent ();
+  }
+
+  public void addNotify (java.awt.dnd.peer.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)
+  {
+    // FIXME: implement this
+  }
+
+  protected void acceptDrag (int dragOperation)
+  {
+    // FIXME: implement this
+  }
+
+  protected void rejectDrag ()
+  {
+    // FIXME: implement this
+  }
+
+  protected void acceptDrop (int dropOperation)
+  {
+    // FIXME: implement this
+  }
+
+  protected void rejectDrop ()
+  {
+    // FIXME: implement this
+  }
+
+  protected DataFlavor[] getCurrentDataFlavors ()
+  {
+    // FIXME: implement this
+    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
+    return null;
+  }
+
+  protected Transferable createTransferableProxy(Transferable t, boolean local)
+  {
+    return new TransferableProxy (t, local);
+  }
+} // class DropTargetContext