/** Disposes all resources that are used by this handler. */ public void destroy() { if (container != null) { setCursor(null); current = null; container.removeMouseListener(this); container.removeMouseMotionListener(this); container = null; try { java.awt.Toolkit.getDefaultToolkit().removeAWTEventListener(this); } catch (Throwable e) { e.printStackTrace(); } setController(null); station.removeDockHierarchyListener(this); } }