Initial revision

From-SVN: r102074
2005-07-16 00:30:23 +00:00
parent 6f4434b39b
commit f911ba985a
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+/* DropTargetDragEvent.java --
+   Copyright (C) 2002, 2004  Free Software Foundation, Inc.
+
+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.Point;
+import java.awt.datatransfer.DataFlavor;
+import java.util.List;
+
+/**
+ * @since 1.2
+ */
+public class DropTargetDragEvent extends DropTargetEvent
+{
+  /**
+   * Compatible with 1.2+
+   */
+  private static final long serialVersionUID = -8422265619058953682L;
+
+  private final int dropAction;
+  private final int srcActions;
+  private final Point location;
+
+  /**
+   * Initializes a <code>DropTargetDragEvent</code>.
+   *
+   * @exception IllegalArgumentException If dropAction is not one of DnDConstants,
+   * srcActions is not a bitwise mask of DnDConstants, or dtc is null.
+   * @exception NullPointerException If location is null.
+   */
+  public DropTargetDragEvent (DropTargetContext context, Point location,
+                              int dropAction, int srcActions)
+  {
+    super (context);
+
+    if (location == null)
+      throw new NullPointerException ();
+
+    if (context == null)
+      throw new IllegalArgumentException ();
+
+    if (dropAction != DnDConstants.ACTION_NONE
+        && dropAction != DnDConstants.ACTION_COPY
+        && dropAction != DnDConstants.ACTION_MOVE
+        && dropAction != DnDConstants.ACTION_COPY_OR_MOVE
+        && dropAction != DnDConstants.ACTION_LINK
+        && dropAction != DnDConstants.ACTION_REFERENCE)
+      throw new IllegalArgumentException ();
+
+    int srcActionsMask = DnDConstants.ACTION_NONE
+                         | DnDConstants.ACTION_COPY
+                         | DnDConstants.ACTION_MOVE
+                         | DnDConstants.ACTION_COPY_OR_MOVE
+                         | DnDConstants.ACTION_LINK
+                         | DnDConstants.ACTION_REFERENCE;
+    
+    if (~(srcActions ^ srcActionsMask) != 0)
+      throw new IllegalArgumentException ();
+    
+    this.dropAction = dropAction;
+    this.srcActions = srcActions;
+    this.location = location;
+  }
+
+  public void acceptDrag (int dragOperation)
+  {
+    context.acceptDrag (dragOperation);
+  }
+
+  public DataFlavor[] getCurrentDataFlavors ()
+  {
+    return context.getCurrentDataFlavors ();
+  }
+  
+  public List getCurrentDataFlavorsAsList ()
+  {
+    return context.getCurrentDataFlavorsAsList ();
+  }
+  
+  public int getDropAction()
+  {
+    return 0; 
+    //return dropAction & ((DropTargetContext) source).getTargetActions();
+  }
+
+  public Point getLocation ()
+  {
+    return location;
+  }
+
+  public int getSourceActions ()
+  {
+    return srcActions;
+  }
+
+  public boolean isDataFlavorSupported (DataFlavor df)
+  {
+    return context.isDataFlavorSupported (df);
+  }
+
+  public void rejectDrag ()
+  {
+    context.rejectDrag ();
+  }
+} // class DropTargetDragEvent