001    /* DropTargetDropEvent.java --
002       Copyright (C) 2002, 2006 Free Software Foundation, Inc.
003    
004    This file is part of GNU Classpath.
005    
006    GNU Classpath is free software; you can redistribute it and/or modify
007    it under the terms of the GNU General Public License as published by
008    the Free Software Foundation; either version 2, or (at your option)
009    any later version.
010    
011    GNU Classpath is distributed in the hope that it will be useful, but
012    WITHOUT ANY WARRANTY; without even the implied warranty of
013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014    General Public License for more details.
015    
016    You should have received a copy of the GNU General Public License
017    along with GNU Classpath; see the file COPYING.  If not, write to the
018    Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019    02110-1301 USA.
020    
021    Linking this library statically or dynamically with other modules is
022    making a combined work based on this library.  Thus, the terms and
023    conditions of the GNU General Public License cover the whole
024    combination.
025    
026    As a special exception, the copyright holders of this library give you
027    permission to link this library with independent modules to produce an
028    executable, regardless of the license terms of these independent
029    modules, and to copy and distribute the resulting executable under
030    terms of your choice, provided that you also meet, for each linked
031    independent module, the terms and conditions of the license of that
032    module.  An independent module is a module which is not derived from
033    or based on this library.  If you modify this library, you may extend
034    this exception to your version of the library, but you are not
035    obligated to do so.  If you do not wish to do so, delete this
036    exception statement from your version. */
037    
038    package java.awt.dnd;
039    
040    import java.awt.Point;
041    import java.awt.datatransfer.DataFlavor;
042    import java.awt.datatransfer.Transferable;
043    import java.util.List;
044    
045    /**
046     * @since 1.2
047     */
048    public class DropTargetDropEvent extends DropTargetEvent
049    {
050      /**
051       * Compatible with JDK 1.2+
052       */
053      private static final long serialVersionUID = -1721911170440459322L;
054    
055      private final int dropAction;
056      private final int actions;
057      private final Point location;
058      private final boolean isLocalTx;
059      
060      /**
061       * Initializes a <code>DropTargetDropEvent</code>. By default this constructor
062       * assumes that the target is not int same JVM.
063       *
064       * @exception IllegalArgumentException If dropAction is not one of DnDConstants,
065       * actions is not a bitwise mask of DnDConstants, or dtc is null.
066       * @exception NullPointerException If location is null.
067       */
068      public DropTargetDropEvent(DropTargetContext dtc, Point location,
069                                 int dropAction, int actions)
070      {
071        this(dtc, location, dropAction, actions, false);
072      }
073    
074      /**
075       * Initializes a <code>DropTargetDropEvent</code>.
076       *
077       * @exception IllegalArgumentException If dropAction is not one of DnDConstants,
078       * actions is not a bitwise mask of DnDConstants, or dtc is null.
079       * @exception NullPointerException If location is null.
080       */
081      public DropTargetDropEvent(DropTargetContext dtc, Point location,
082                                 int dropAction, int actions, boolean isLocalTx)
083      {
084        super(dtc);
085    
086        if (location == null)
087          throw new NullPointerException();
088    
089        if (dtc == null)
090          throw new IllegalArgumentException();
091    
092        if (dropAction != DnDConstants.ACTION_NONE
093            && dropAction != DnDConstants.ACTION_COPY
094            && dropAction != DnDConstants.ACTION_MOVE
095            && dropAction != DnDConstants.ACTION_COPY_OR_MOVE
096            && dropAction != DnDConstants.ACTION_LINK
097            && dropAction != DnDConstants.ACTION_REFERENCE)
098          throw new IllegalArgumentException();
099    
100        int actionsMask = DnDConstants.ACTION_NONE
101                          | DnDConstants.ACTION_COPY
102                          | DnDConstants.ACTION_MOVE
103                          | DnDConstants.ACTION_COPY_OR_MOVE
104                          | DnDConstants.ACTION_LINK
105                          | DnDConstants.ACTION_REFERENCE;
106        
107        if (~(actions ^ actionsMask) != 0)
108          throw new IllegalArgumentException();
109        
110        this.dropAction = dropAction;
111        this.actions = actions;
112        this.location = location;
113        this.isLocalTx = isLocalTx;
114      }
115      
116      public Point getLocation()
117      {
118        return location;
119      }
120    
121      public DataFlavor[] getCurrentDataFlavors()
122      {
123        return context.getCurrentDataFlavors();
124      }
125    
126      public List<DataFlavor> getCurrentDataFlavorsAsList()
127      {
128        return context.getCurrentDataFlavorsAsList();
129      }
130    
131      public boolean isDataFlavorSupported(DataFlavor flavor)
132      {
133        return context.isDataFlavorSupported(flavor);
134      }
135    
136      public int getSourceActions()
137      {
138        return actions;
139      }
140    
141      public int getDropAction()
142      {
143        return dropAction;
144      }
145    
146      public Transferable getTransferable()
147      {
148        return context.getTransferable ();
149      }
150    
151      public void acceptDrop(int dropAction)
152      {
153        context.acceptDrop(dropAction);
154      }
155    
156      public void rejectDrop()
157      {
158        context.rejectDrop();
159      }
160    
161      public void dropComplete(boolean success)
162      {
163        context.dropComplete(success);
164      }
165    
166      public boolean isLocalTransfer()
167      {
168        return isLocalTx;
169      }
170    } // class DropTargetDropEvent