/* * The method maps the list of the active windows to the window's AppContext, * then the method registers ActiveWindowListener, GuiDisposedListener listeners; * it executes the initilialization only once per AppContext. */ @SuppressWarnings("unchecked") private static void initActiveWindowsTracking(Window w) { AppContext appContext = AppContext.getAppContext(); synchronized (appContext) { List<WWindowPeer> l = (List<WWindowPeer>) appContext.get(ACTIVE_WINDOWS_KEY); if (l == null) { l = new LinkedList<WWindowPeer>(); appContext.put(ACTIVE_WINDOWS_KEY, l); appContext.addPropertyChangeListener(AppContext.GUI_DISPOSED, guiDisposedListener); KeyboardFocusManager kfm = KeyboardFocusManager.getCurrentKeyboardFocusManager(); kfm.addPropertyChangeListener("activeWindow", activeWindowListener); } } }