private File validateParentDirectory(File file) {
		File parentDirectory = file.getParentFile();
		if (isRootDirectory(file)) {
			// the given file to select is a root directory; load the MY_COMPUTER view so that
			// we can select the root directory
			parentDirectory = MY_COMPUTER;
		}
		return parentDirectory;
	}
SCR 3962 - in this mode we allow the user to press Enter/OK with no text in
the text field, which means to user the current directory as the selected dir
Ghidra/Framework/Docking/src/main/java/docking/widgets/filechooser/GhidraFileChooser.java