--- old/src/macosx/classes/sun/lwawt/macosx/CDragSourceContextPeer.java	2013-01-25 12:27:19.000000000 +0400
+++ new/src/macosx/classes/sun/lwawt/macosx/CDragSourceContextPeer.java	2013-01-25 12:27:19.000000000 +0400
@@ -88,40 +88,25 @@
         DragGestureEvent trigger = getTrigger();
         InputEvent         triggerEvent = trigger.getTriggerEvent();
 
-        Point dragOrigin = trigger.getDragOrigin();
+        Point dragOrigin = new Point(trigger.getDragOrigin());
         int extModifiers = (triggerEvent.getModifiers() | triggerEvent.getModifiersEx());
         long timestamp   = triggerEvent.getWhen();
         int clickCount   = ((triggerEvent instanceof MouseEvent) ? (((MouseEvent) triggerEvent).getClickCount()) : 1);
 
-        // Get drag source component and its peer:
         Component component = trigger.getComponent();
-        Point componentOffset = new Point();
-        ComponentPeer peer = component.getPeer();
-
-        // For a lightweight component traverse up the hierarchy to the first heavyweight
-        // which will be used as the ComponentModel for the native drag source.
-        if (component.isLightweight()) {
-            Point loc = component.getLocation();
-            componentOffset.translate(loc.x, loc.y);
-
-            for (Component parent = component.getParent(); parent != null; parent = parent.getParent()) {
-                if (parent.isLightweight() == false) {
-                    peer = parent.getPeer();
-                    break;
-                }
-
-                loc = parent.getLocation();
-                componentOffset.translate(loc.x, loc.y);
-            }
+        // For a lightweight component traverse up the hierarchy to the root
+        Point loc = component.getLocation();
+        Component rootComponent = component;
+        while (!(rootComponent instanceof Window)) {
+            dragOrigin.translate(loc.x, loc.y);
+            rootComponent = rootComponent.getParent();
+            loc = rootComponent.getLocation();
         }
 
-        // Make sure the drop target is a ComponentModel:
-        if (!(peer instanceof LWComponentPeer))
-            throw new IllegalArgumentException("DragSource's peer must be a ComponentModel.");
-
-        // Get model pointer (CButton.m and such) and its native peer:
-        LWComponentPeer model = (LWComponentPeer) peer;
-        CPlatformWindow platformWindow = (CPlatformWindow) model.getPlatformWindow();
+        //It sure will be LWComponentPeer instance as rootComponent is a Window
+        LWComponentPeer peer = (LWComponentPeer)rootComponent.getPeer();
+        //Get a pointer to a native window
+        CPlatformWindow platformWindow = (CPlatformWindow) peer.getPlatformWindow();
         long nativeWindowPtr = platformWindow.getNSWindowPtr();
 
         // Get drag cursor:
@@ -155,7 +140,7 @@
         try {
             // Create native dragging source:
             final long nativeDragSource = createNativeDragSource(component, peer, nativeWindowPtr, transferable, triggerEvent,
-                (int) (dragOrigin.getX() + componentOffset.x), (int) (dragOrigin.getY() + componentOffset.y), extModifiers,
+                (int) (dragOrigin.getX()), (int) (dragOrigin.getY()), extModifiers,
                 clickCount, timestamp, cursor, fDragCImage, dragImageOffset.x, dragImageOffset.y,
                 getDragSourceContext().getSourceActions(), formats, formatMap);
 
@@ -165,8 +150,8 @@
             setNativeContext(nativeDragSource);
 
             CCursorManager.getInstance().startDrag(
-                    (int) (dragOrigin.getX() + componentOffset.x),
-                    (int) (dragOrigin.getY() + componentOffset.y));
+                    (int) (dragOrigin.getX()),
+                    (int) (dragOrigin.getY()));
         }
 
         catch (Exception e) {
--- old/src/macosx/native/sun/awt/CDragSource.m	2013-01-25 12:27:20.000000000 +0400
+++ new/src/macosx/native/sun/awt/CDragSource.m	2013-01-25 12:27:20.000000000 +0400
@@ -443,9 +443,9 @@
     NSGraphicsContext* graphicsContext = [NSGraphicsContext graphicsContextWithWindow:window];
 
     // Convert mouse coordinates to NS:
-    NSPoint location = NSMakePoint(fDragPos.x, fDragPos.y);
-    NSPoint eventLocation = [fView convertPoint:location toView:nil];
-
+    NSPoint eventLocation = [fView convertPoint:NSMakePoint(fDragPos.x, fDragPos.y) toView:nil];
+    eventLocation.y = [[fView window] frame].size.height - eventLocation.y;
+    
     // Convert fTriggerEventTimeStamp to NS - AWTEvent.h defines UTC(nsEvent) as ((jlong)[event timestamp] * 1000):
     NSTimeInterval timeStamp = fTriggerEventTimeStamp / 1000;
 
@@ -497,12 +497,9 @@
     NSImage* dragImage = fDragImage;
 
     // Get drag origin and offset:
-    NSPoint dragOrigin;
-    dragOrigin.x = fDragPos.x;
-    dragOrigin.y = fDragPos.y;
-    dragOrigin = [view convertPoint:[dragEvent locationInWindow] fromView:nil];
+    NSPoint dragOrigin = [dragEvent locationInWindow];
     dragOrigin.x += fDragImageOffset.x;
-    dragOrigin.y += [dragImage size].height + fDragImageOffset.y;
+    dragOrigin.y -= fDragImageOffset.y + [dragImage size].height;
 
     // Drag offset values don't seem to matter:
     NSSize dragOffset = NSMakeSize(0, 0);
@@ -516,7 +513,6 @@
     DLog5(@"  - drag image: %f, %f (%f x %f)", fDragImageOffset.x, fDragImageOffset.y, [dragImage size].width, [dragImage size].height);
     DLog3(@"  - event point (window) %f, %f", [dragEvent locationInWindow].x, [dragEvent locationInWindow].y);
     DLog3(@"  - drag point (view) %f, %f", dragOrigin.x, dragOrigin.y);
-
     // Set up the fDragKeyModifier, so we know if the operation has changed
     // Set up the fDragMouseModifier, so we can |= it later (since CoreDrag doesn't tell us mouse states during a drag)
     fDragKeyModifiers = [DnDUtilities extractJavaExtKeyModifiersFromJavaExtModifiers:fModifiers];