src/share/classes/sun/swing/LightweightContent.java

*** 24,34 ****
--- 24,42 ----
   */
  
  package sun.swing;
  
  import javax.swing.JComponent;
+ import java.awt.Component;
  import java.awt.Cursor;
+ import java.awt.dnd.DragGestureEvent;
+ import java.awt.dnd.DragGestureListener;
+ import java.awt.dnd.DragGestureRecognizer;
+ import java.awt.dnd.DragSource;
+ import java.awt.dnd.DropTarget;
+ import java.awt.dnd.InvalidDnDOperationException;
+ import java.awt.dnd.peer.DragSourceContextPeer;
  
  /**
   * The interface by means of which the {@link JLightweightFrame} class
   * communicates to its client application.
   * <p>
*** 207,212 ****
--- 215,249 ----
       * {@code JLightweightFrame} calls this method to notify the client
       * application that in needs to set a cursor
       * @param cursor a cursor to set
       */
      default public void setCursor(Cursor cursor) { }
+ 
+     /**
+      * Create a drag gesture recognizer for the lightweight frame.
+      */
+     default public <T extends DragGestureRecognizer> T createDragGestureRecognizer(
+             Class<T> abstractRecognizerClass,
+             DragSource ds, Component c, int srcActions,
+             DragGestureListener dgl)
+     {
+         return null;
+     }
+     
+     /**
+      * Create a drag source context peer for the lightweight frame.
+      */
+     default public DragSourceContextPeer createDragSourceContextPeer(DragGestureEvent dge) throws InvalidDnDOperationException
+     {
+         return null;
+     }
+ 
+     /**
+      * Adds a drop target to the lightweight frame.
+      */
+     default public void addDropTarget(DropTarget dt) {}
+ 
+     /**
+      * Removes a drop target from the lightweight frame.
+      */
+     default public void removeDropTarget(DropTarget dt) {}
  }