1 /*
   2  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.awt.dnd.peer;
  27 
  28 import java.awt.Cursor;
  29 import java.awt.Image;
  30 import java.awt.Point;
  31 import java.awt.dnd.DragSourceContext;
  32 import java.awt.dnd.InvalidDnDOperationException;
  33 
  34 
  35 /**
  36  * <p>
  37  * This interface is supplied by the underlying window system platform to
  38  * expose the behaviors of the Drag and Drop system to an originator of
  39  * the same
  40  * </p>
  41  *
  42  * @since 1.2
  43  *
  44  */
  45 
  46 public interface DragSourceContextPeer {
  47 
  48     /**
  49      * start a drag
  50      * @param dsc the DragSourceContext
  51      * @param c the cursor
  52      * @param dragImage the image to be dragged
  53      * @param imageOffset the offset
  54      */
  55 
  56     void startDrag(DragSourceContext dsc, Cursor c, Image dragImage, Point imageOffset) throws InvalidDnDOperationException;
  57 
  58     /**
  59      * return the current drag cursor
  60      * @return the current drag cursor
  61      */
  62 
  63     Cursor getCursor();
  64 
  65     /**
  66      * set the current drag cursor
  67      * @param c the cursor
  68      */
  69 
  70     void setCursor(Cursor c) throws InvalidDnDOperationException;
  71 
  72     /**
  73      * notify the peer that the Transferables DataFlavors have changed
  74      */
  75 
  76     void transferablesFlavorsChanged();
  77 }