private static boolean isApplicationVisible() {

		List<DockingWindowManager> windowManagers =
			DockingWindowManager.getAllDockingWindowManagers();
		for (DockingWindowManager manager : windowManagers) {
			JFrame frame = manager.getRootFrame();
			if (frame.isShowing()) {
				return true;
			}
		}

		return false;
	}
Show the splash screen on the Swing thread now.  This will block.
@return the new splash screen
Ghidra/Framework/Docking/src/main/java/docking/framework/SplashScreen.java