i am learning how to create a dialog box in javafx and i wrote a code which is giving me a problem. the error is in the createLoginDialog method.
Error reads "No enclosing instance of type TryDialogBox is accessible. Must qualify the allocation with an enclosing instance of type TryDialogBox (e.g. x.new A() where x is an instance of TryDialogBox)."
public class TryDialogBox extends Application {
static Stage LOGIN_DIALOG;
static int dx = 1;
static int dy = 1;
private static Stage createLoginDialog(Stage parent, boolean modal) {
if (LOGIN_DIALOG != null) {
LOGIN_DIALOG.close();
}
return new MyDialog(parent, modal, "welcom");
}
public void start(final Stage stage) {
stage.setTitle("developing dialog");
Group root = new Group();
Scene scene = new Scene(root, 433, 312, Color.WHEAT);
MenuBar menuBar = new MenuBar();
menuBar.prefWidthProperty().bind(stage.widthProperty());
Menu menu = new Menu("home");
// add
MenuItem newItem = new MenuItem("change password", null);
newItem.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
if (LOGIN_DIALOG == null) {
LOGIN_DIALOG = createLoginDialog(stage, true);
}
LOGIN_DIALOG.sizeToScene();
LOGIN_DIALOG.show();
}
});
menu.getItems().add(newItem);
// add separator
menu.getItems().add(new SeparatorMenuItem());
// add non mdal menu item
ToggleGroup modalGroup = new ToggleGroup();
RadioMenuItem nonModalItem = RadioMenuItemBuilder.create()
.toggleGroup(modalGroup).text("non modal").selected(true)
.build();
nonModalItem.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
LOGIN_DIALOG = createLoginDialog(stage, false);
}
});
menu.getItems().add(nonModalItem);
// add modal
RadioMenuItem modalItem = RadioMenuItemBuilder.create()
.toggleGroup(modalGroup).text("modal").selected(true).build();
modalItem.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
LOGIN_DIALOG = createLoginDialog(stage, true);
}
});
menu.getItems().add(modalItem);
// add sep
menu.getItems().add(new SeparatorMenuItem());
// add exit
MenuItem exitItem = new MenuItem("Exit", null);
exitItem.setMnemonicParsing(true);
exitItem.setAccelerator(new KeyCodeCombination(KeyCode.X,
KeyCombination.CONTROL_DOWN));
exitItem.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
Platform.exit();
}
});
menu.getItems().add(exitItem);
// add menu
menuBar.getMenus().add(menu);
root.getChildren().add(menuBar);
stage.setScene(scene);
stage.show();
}
class MyDialog extends Stage {
public MyDialog(Stage owner, boolean modality, String title) {
super();
initOwner(owner);
Modality m = modality ? Modality.APPLICATION_MODAL : Modality.NONE;
initModality(m);
setOpacity(.90);
setTitle(title);
Group root = new Group();
Scene scene = new Scene(root, 250, 150, Color.WHITE);
setScene(scene);
GridPane gridpane = new GridPane();
gridpane.setPadding(new Insets(5));
gridpane.setHgap(5);
gridpane.setVgap(5);
Label mainLabel = new Label("enter username & password");
gridpane.add(mainLabel, 1, 0, 2, 1);
Label userNamelbl = new Label("username");
gridpane.add(userNamelbl, 0, 1);
Label passwordlbl = new Label("password");
gridpane.add(passwordlbl, 0, 2);
// username textfield
final TextField userNameFld = new TextField("Admin");
gridpane.add(userNameFld, 1, 1);
// password
final PasswordField passwordFld = new PasswordField();
passwordFld.setText("dwossap");
gridpane.add(passwordFld, 1, 2);
Button login = new Button("change");
login.setOnAction(new EventHandler<ActionEvent>() {
public void handle(ActionEvent event) {
close();
}
});
gridpane.add(login, 1, 3);
GridPane.setHalignment(login, HPos.RIGHT);
root.getChildren().add(gridpane);
}
}
public static void main(String[] args) {
launch(args);
}
}
