Method loadMappings

src/main/java/matcher/gui/menu/FileMenu.java:146–194

(MappingFormat format)

	}

	private void loadMappings(MappingFormat format) {
		Window window = gui.getScene().getWindow();
		Path file;

		if (format == null || format.hasSingleFile()) {
			SelectedFile res = Gui.requestFile("Select mapping file", window, getMappingLoadExtensionFilters(), true); // TODO: pre-select format if non-null
			if (res == null) return; // aborted

			file = res.path;
			format = getFormat(res.filter.getDescription());
		} else {
			file = Gui.requestDir("Select mapping dir", window);
		}

		if (file == null) return;

		try {
			List<String> namespaces = MappingReader.getNamespaces(file, format);

			Dialog<MappingsLoadSettings> dialog = new Dialog<>();
			//dialog.initModality(Modality.APPLICATION_MODAL);
			dialog.setResizable(true);
			dialog.setTitle("Import Settings");
			dialog.getDialogPane().getButtonTypes().addAll(ButtonType.OK, ButtonType.CANCEL);

			LoadMappingsPane content = new LoadMappingsPane(namespaces);
			dialog.getDialogPane().setContent(content);
			dialog.setResultConverter(button -> button == ButtonType.OK ? content.getSettings() : null);
			final MappingFormat loadFormat = format;

			Optional<MappingsLoadSettings> result = dialog.showAndWait();
			if (!result.isPresent()) return;

			MappingsLoadSettings settings = result.get();
			ClassEnvironment env = gui.getMatcher().getEnv();

			Mappings.load(file, loadFormat,
					settings.nsSource, settings.nsTarget,
					settings.fieldSource, settings.fieldTarget,
					(settings.a ? env.getEnvA() : env.getEnvB()),
					settings.replace);
		} catch (IOException e) {
			e.printStackTrace();
			gui.showAlert(AlertType.ERROR, "Load error", "Error while loading mappings", e.toString());
			return;
		}

		gui.onMappingChange();
	}

	private static List<ExtensionFilter> getMappingLoadExtensionFilters() {
		MappingFormat[] formats = MappingFormat.values();