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25 
26 package sun.lwawt.macosx;
27 
28 import sun.lwawt.LWComponentPeer;
29 import sun.lwawt.PlatformDropTarget;
30 
31 import java.awt.*;
32 import java.awt.dnd.DropTarget;
33 
34 
35 final class CDropTarget implements PlatformDropTarget {
36     private long fNativeDropTarget;
37 
CDropTarget(DropTarget dropTarget, Component component, LWComponentPeer<?, ?> peer)38     CDropTarget(DropTarget dropTarget, Component component, LWComponentPeer<?, ?> peer) {
39         long nativePeer = CPlatformWindow.getNativeViewPtr(peer.getPlatformWindow());
40         if (nativePeer == 0L) return; // Unsupported for a window without a native view (plugin)
41 
42         // Create native dragging destination:
43         fNativeDropTarget = createNativeDropTarget(dropTarget, component, nativePeer);
44         if (fNativeDropTarget == 0) {
45             throw new IllegalStateException("CDropTarget.createNativeDropTarget() failed.");
46         }
47     }
48 
49     @Override
dispose()50     public void dispose() {
51         if (fNativeDropTarget != 0) {
52             releaseNativeDropTarget(fNativeDropTarget);
53             fNativeDropTarget = 0;
54         }
55     }
56 
createNativeDropTarget(DropTarget dropTarget, Component component, long nativePeer)57     protected native long createNativeDropTarget(DropTarget dropTarget,
58                                                  Component component,
59                                                  long nativePeer);
releaseNativeDropTarget(long nativeDropTarget)60     protected native void releaseNativeDropTarget(long nativeDropTarget);
61 }
62