CompassDropController implements DropController { public void setup(final WorkbenchPanelView<?> view) { dropTarget = view; }  void setup(final WorkbenchPanelView<?> view); @Override //When entering a DecoratedWorkbenchPanel show the Compass void onEnter(DragContext context); @Override //Hide the DecoratedWorkbenchPanel's Compass void onLeave(DragContext context); @Override void onMove(DragContext context); @Override void onDrop(DragContext context); @Override Widget getDropTarget(); @Override void onPreviewDrop(DragContext context);  }
@Test public void setupTest() { compassDropController.setup(view); assertEquals(view, compassDropController.dropTarget); }