Диалоги

@Autowired
private Dialogs dialogs;
@Subscribe("standardParametersButton")
public void onStandardParametersButtonClick(ClickEvent<Button> event) {
    dialogs.createInputDialog(this)
            .withHeader("Enter values")
            .withParameters(
                    stringParameter("name").withLabel("Name").withRequired(true), (1)
                    intParameter("amount").withLabel("Amount").withDefaultValue(1), (2)
                    entityParameter("user", User.class).withLabel("User"), (3)
                    enumParameter("status", OnboardingStatus.class).withLabel("Status") (4)
            )
            .withActions(DialogActions.OK_CANCEL) (5)
            .withCloseListener(closeEvent -> {
                if (closeEvent.closedWith(DialogOutcome.OK)) { (6)
                    String name = closeEvent.getValue("name"); (7)
                    int amount = closeEvent.getValue("amount");
                    User user = closeEvent.getValue("user");
                    OnboardingStatus status = closeEvent.getValue("status");
                    // process entered values...
                }
            })
            .open();

}

@Autowired
private Dialogs dialogs;
@Autowired
private DataManager dataManager;
@Autowired
private UiComponents uiComponents;

@Subscribe("customParameterButton")
public void onCustomParameterButtonClick(ClickEvent<Button> event) {
    dialogs.createInputDialog(this)
            .withHeader("Enter values")
            .withParameters(
                    stringParameter("name").withLabel("Name").withRequired(true),
                    intParameter("amount").withLabel("Amount").withDefaultValue(1),
                    parameter("user") (1)
                            .withLabel("User")
                            .withField(() -> {
                                EntityComboBox<User> field = uiComponents.create(EntityComboBox.class); (2)
                                field.setItems(dataManager.load(User.class).all().list()); (3)
                                field.setWidthFull();
                                return field;
                            }),
                    enumParameter("status", OnboardingStatus.class).withLabel("Status")
            )
            .withActions(DialogActions.OK_CANCEL).withCloseListener(closeEvent -> {
                if (closeEvent.closedWith(DialogOutcome.OK)) {
                    String name = closeEvent.getValue("name");
                    int amount = closeEvent.getValue("amount");
                    User user = closeEvent.getValue("user");
                    OnboardingStatus status = closeEvent.getValue("status");
                    // process entered values...
                }
            })
            .open();
}

@Autowired
private Dialogs dialogs;
@Subscribe("validationButton")
public void onValidationButtonClick(ClickEvent<Button> event) {
    dialogs.createInputDialog(this)
            .withHeader("Enter at least one value")
            .withParameters(
                    stringParameter("name").withLabel("Name").withRequired(true),
                    entityParameter("User", User.class).withLabel("User")
            )
            .withValidator(context -> { (1)
                String name = context.getValue("name"); (2)
                User user = context.getValue("user");
                if (Strings.isNullOrEmpty(name) && user == null) {
                    return ValidationErrors.of("Enter name or select a customer"); (3)
                }
                return ValidationErrors.none();
            })
            .withActions(DialogActions.OK_CANCEL)
            .withCloseListener(closeEvent -> {
                if (closeEvent.closedWith(DialogOutcome.OK)) {
                    String name = closeEvent.getValue("name");
                    User user = closeEvent.getValue("user");
                    // process entered values...
                }
            })
            .open();
}