import static javafx.scene.input.KeyCombination.SHORTCUT_DOWN;

import java.util.Map;

import javafx.application.Application;
import javafx.application.Platform;
import javafx.scene.control.ButtonType;
import javafx.scene.control.Dialog;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.input.KeyCode;
import javafx.scene.input.KeyCodeCombination;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

class MainDialog extends Dialog {
	private final Label label = new Label();
	private final TextField textField = new TextField();

	public MainDialog() {
		getDialogPane().setContent(new VBox(10, label, textField));
		getDialogPane().getButtonTypes().add(ButtonType.CLOSE);

		Map<KeyCodeCombination, Runnable> accelerators = Map.of(
				new KeyCodeCombination(KeyCode.BACK_SLASH, SHORTCUT_DOWN), () -> label.setText("BACK_SLASH"),
				new KeyCodeCombination(KeyCode.CLOSE_BRACKET, SHORTCUT_DOWN), () -> label.setText("CLOSE_BRACKET"),
				new KeyCodeCombination(KeyCode.OPEN_BRACKET, SHORTCUT_DOWN), () -> label.setText("OPEN_BRACKET"));

		/* Option 1 */
//		getDialogPane().getScene().addEventFilter(KeyEvent.KEY_RELEASED, event -> {
//			for (var a : accelerators.entrySet()) {
//				if (a.getKey().match(event)) {
//					a.getValue().run();
//					event.consume();
//				}
//			}
//		});

		/* Option 2 */
		getDialogPane().getScene().getAccelerators().putAll(accelerators);

		Platform.runLater(textField::requestFocus);
	}
}

public class Test extends Application {
	@Override
	public void start(Stage stage) throws Exception {
		new MainDialog().showAndWait();
	}

	public static void main(String[] args) {
		launch(args);
	}
}