here is my problem :
I have 3 FXML files with each controller assigned.
ExplorerPage.FXML : layout used to show a gridpane with undefined object number inside.
ExplorerNoteController.FXML : the object (StackPane) inserted in the gridpane.
NoteHoverMenuController.FXML : When the user moves the mouse on the previous object it shows options to update or delete the object.
To resume :
ExplorerPage.FXML -> ExplorerNoteController.FXML -> NoteHoverMenuController.FXML
Gridpane -> Stackpane -> Borderpane(2)
What I want to do is when I click on the "delete" button in the NoteHoverMenuController.FXML, this remove the current object from the gridpane (located in ExplorerPage.FXML). But I have no clue to do this. I tried binding with properties, static methods, .. but no satisfaying results.
This is my code :
ExplorerPage controller
public class ExplorerPage implements Initializable {
private Connection conn;
// LOAD ALL NOTES
private List<Note> gridNotes = new LinkedList<Note>();
JFXRadioButton alertButton = new JFXRadioButton(); // TEMP
StackPane spaneExpNote; // StackPane used to switch front/back pane (overlay)
private byte j = 0;
private byte k = 0;
#FXML
private GridPane FXMLNotesPane = new GridPane();
#Override
public void initialize(URL fxmlFileLocation, ResourceBundle resources) {
try {
// LOAD DATAS FROM DB W/ PARAM FOLDER
conn = DBInitialize.getInstance();
DAO<Note> findAllNotes = new NoteDAO(conn);
gridNotes = findAllNotes.findAll("Orange");
// STACKPANES CONSTRUCTION
for(int i = 0; i < gridNotes.size(); i++)
{
if (j>2) {
j=0;
k++;
}
FXMLLoader loader = new FXMLLoader(getClass().getResource("/fr/cryption/view/ExplorerNote.fxml"));
spaneExpNote = (StackPane) loader.load();
ExplorerNoteController controller = loader.getController();
controller.setData(gridNotes.get(i).getTitleNote(), gridNotes.get(i).getContentNote(), gridNotes.get(i).getDateNote());
FXMLNotesPane.add(spaneExpNote,j,k);
j++;
}
ExplorerNoteController
public class ExplorerNoteController implements Initializable {
#FXML
StackPane rootNotePane;
#FXML
private Label labPaneTitle1;
#FXML
private Label labPaneDate1;
#FXML
private Label labPaneContent1;
BorderPane pane = null;
String ok = "ok";
/**
* Initializes the controller class.
*/
#Override
public void initialize(URL url, ResourceBundle rb) {
}
public void setData(String title, String content, String date) {
labPaneTitle1.setText(title);
labPaneContent1.setText(content);
labPaneDate1.setText(date);
}
public void showHoverMenu() throws IOException {
FXMLLoader loader = new FXMLLoader(getClass().getResource("/fr/cryption/view/NoteHoverMenu.fxml"));
pane = (BorderPane) loader.load();
NoteHoverMenuController controller = loader.getController();
rootNotePane.getChildren().add(pane);
}
public void hideHoverMenu() throws IOException {
rootNotePane.getChildren().remove(pane);
}
....
NoteHoverMenuController
public class NoteHoverMenuController implements Initializable {
String idNote = "";
#FXML
BorderPane hovernode;
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
public void setID(String id) {
idNote = id;
}
public void deleteNoteExplorer(ActionEvent event) {
System.out.println(hovernode.getParent().lookup("stckpane")); // DELETE THE NOTE
}
}
I will update this post if you want FXML(s) as well.
Thanks.
SCREENS :
Screen Gridpane
Screen Hover StackPane
Related
So I'm trying to load and save Images into an imageView where the location of the image is chosen through a file browser. I've been working on this for several days now and I'm gonna have a stroke if I can't get it fixed. I've tried everything I can think of. Thank you in advance for helping.
UPDATED:
Here is my main class:
public class Main extends Application {
private Stage primaryStage;
private BorderPane rootLayout;
public Main(){}
#Override
public void start(Stage primaryStage) throws Exception{
this.primaryStage = primaryStage;
this.primaryStage.setTitle("Help Please");
initRootLayout();
showScreen();
}
public void initRootLayout(){
try{
FXMLLoader loader = new FXMLLoader();
loader.setLocation(Main.class.getResource("view/RootLayout.fxml"));
rootLayout = (BorderPane) loader.load();
Scene scene = new Scene(rootLayout);
primaryStage.setScene(scene);
RootLayout controller = loader.getController();
controller.setMain(this);
primaryStage.show();
}catch(Exception e ){e.printStackTrace();}
}
public void showScreen(){
try{FXMLLoader loader = new FXMLLoader();
loader.setLocation(Main.class.getResource("view/sample.fxml"));
BorderPane sample = (BorderPane)loader.load();
rootLayout.setCenter(sample);
Controller controller = loader.getController();
controller.setMain(this);
}catch (Exception e){e.printStackTrace();}
}
public Stage getPrimaryStage(){return primaryStage;}
public static void main(String[] args) {
launch(args);
}
}
Here is the rootLayout:
public class RootLayout {
private Main main;
private Controller controller = new Controller();
public void setMain(Main main){this.main = main;}
#FXML
private void handleOpen(){
FileChooser fileChooser = new FileChooser();
FileChooser.ExtensionFilter extensionFilter = new FileChooser.ExtensionFilter(
"PNG files (*.png)","*png");
fileChooser.getExtensionFilters().add(extensionFilter);
File file = fileChooser.showOpenDialog(main.getPrimaryStage());
if(file!= null){
controller.updateImage(file.toURI().toString());
}
}
}
And here is the controller:
public class Controller implements Initializable {
#FXML
ImageView imageView = new ImageView();
String imageURL;
Main main = new Main();
public void setMain(Main main){
this.main = main;
}
public void updateImage(String url){
if(url.length()>=1){
Image image = new Image(url);
imageView.setImage(image);
System.out.println(url);
}
else{
System.out.println(url);
System.out.println("image invalid");
}
}
#Override
public void initialize(URL location, ResourceBundle resources) {
}
}
Two things:
Never assign a field whose value is to be injected by an FXMLLoader (e.g. #FXML fields). Doing so is a waste of resources at best and introduces subtle bugs at worst. For instance, if you were to leave the imageView field uninitialized you'd be getting a NullPointerException which would indicate a problem with your setup. Since you do initialize the field, however, you don't get any errors and there's a false impression of the code working.
In your RootLayout controller class, you have:
private Controller controller = new Controller();
That instance of Controller you just created is not linked to any FXML file. And since you initialize the imageView field (see first point) you end up updating an ImageView which is not being displayed anywhere; this is where not initializing said field would have given a nice indication of there being a problem. The solution is to pass the Controller instance created by the FXMLLoader to the RootLayout instance created by the other FXMLLoader.
Also, in the same class you have:
Main main = new Main();
Which is also unnecessary since the created instance of Main is both not the correct instance and is replaced by the call to #setMain(Main) almost immediately.
Assuming your FXML files (which you did not provide) are correct, the Java classes should look more like:
Main.java
public class Main extends Application {
private Stage primaryStage;
private BorderPane rootLayout;
private RootLayout rootLayoutController;
public Main() {}
#Override
public void start(Stage primaryStage) throws Exception {
this.primaryStage = primaryStage;
this.primaryStage.setTitle("Help Please");
initRootLayout();
showScreen();
}
public void initRootLayout() {
try {
FXMLLoader loader = new FXMLLoader();
loader.setLocation(Main.class.getResource("view/RootLayout.fxml"));
rootLayout = (BorderPane) loader.load();
Scene scene = new Scene(rootLayout);
primaryStage.setScene(scene);
// store RootLayout instance in field so #showScreen()
// can reference it
rootLayoutController = loader.getController();
rootLayoutController.setMain(this);
primaryStage.show();
} catch (Exception e) {
e.printStackTrace();
}
}
public void showScreen() {
try {
FXMLLoader loader = new FXMLLoader();
loader.setLocation(Main.class.getResource("view/sample.fxml"));
BorderPane sample = (BorderPane) loader.load();
rootLayout.setCenter(sample);
Controller controller = loader.getController();
controller.setMain(this);
// set Controller instance on RootLayout instance
rootLayoutController.setController(controller);
} catch (Exception e) {
e.printStackTrace();
}
}
public Stage getPrimaryStage() {
return primaryStage;
}
public static void main(String[] args) {
launch(args);
}
}
RootLayout.java
public class RootLayout {
private Main main;
private Controller controller;
public void setMain(Main main) {
this.main = main;
}
public void setController(Controller controller) {
this.controller = controller;
}
#FXML
private void handleOpen() {
FileChooser fileChooser = new FileChooser();
// Note extensions should be prefixed with "*."
FileChooser.ExtensionFilter extensionFilter =
new FileChooser.ExtensionFilter("PNG files (*.png)", "*.png");
fileChooser.getExtensionFilters().add(extensionFilter);
File file = fileChooser.showOpenDialog(main.getPrimaryStage());
if (file != null) {
controller.updateImage(file.toURI().toString());
}
}
}
Controller.java
public class Controller implements Initializable {
#FXML ImageView imageView; // leave uninitialized, will be injected
String imageURL;
Main main;
public void setMain(Main main) {
this.main = main;
}
public void updateImage(String url) {
if (url.length() >= 1) {
Image image = new Image(url);
imageView.setImage(image);
System.out.println(url);
} else {
System.out.println(url);
System.out.println("image invalid");
}
}
#Override
public void initialize(URL location, ResourceBundle resources) {}
}
Note: Did not test new code.
I am playing around with SceneBuilder and come across a few questions about the intialize() method and how to change ComboBox items after it's already been initialized in said method. So basically, after I set the items in initialize, I am not able to change them anymore from another method in the controller.
Here is my code:
public class AppController implements Initializable {
private ObservableList<String> list = FXCollections.observableArrayList();
private MainModel model;
#FXML
private ComboBox<String> cobUsers = new ComboBox<String>();
#Override
public void initialize(URL url, ResourceBundle rb) {
list.add("name1");
list.add("name2");
cobUsers.setItems(list); // this works!
}
public void initModel(MainModel model) {
this.model = model;
}
public void addItems(){
list.add("name3");
list.add("name4");
cobUsers.setItems(list); // this does not work. ComboBox items remain "name1" and "name2"
}
}
public class App extends Application {
private Stage primaryStage;
private AnchorPane rootLayout;
private AppController appController = new AppController();
MainModel model = new MainModel();
#Override
public void start(Stage primaryStage) {
appController.initModel(model);
this.primaryStage = primaryStage;
this.primaryStage.setTitle("App");
initRootLayout();
appController.addItems();
}
/**
* Initializes the root layout.
*/
public void initRootLayout() {
try {
// Load root layout from fxml file.
FXMLLoader loader = new FXMLLoader();
loader.setLocation(getClass().getResource("FXMLDocument.fxml"));
rootLayout = (AnchorPane) loader.load();
// Show the scene containing the root layout.
Scene scene = new Scene(rootLayout);
primaryStage.setScene(scene);
primaryStage.show();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* #param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
}
So guess my question is, how can I access/change my ComboBox later on, after it's been initialized in intialize()?
Thanks! :)
UPDATE 1:
I have changed the initRootLayout() in the App class (see below) and it WORKS now. list now contains 4 items and all of them show up in the ComboBox after calling addItems(). Thanks everyone!
public void initRootLayout() {
try {
// Load root layout from fxml file.
FXMLLoader loader = new FXMLLoader(); loader.setLocation(getClass().getResource("FXMLDocument.fxml"));
rootLayout = (AnchorPane) loader.load();
AppController controller = loader.<AppController>getController();
controller.addItems();
// Show the scene containing the root layout.
Scene scene = new Scene(rootLayout);
primaryStage.setScene(scene);
primaryStage.show();
} catch (IOException e) {
e.printStackTrace();
}
}
Let's say I've got 3 views and 3 controllers:
LogInController, LogInView
MainMenuController, MainMenuView
ListOfPatientsInternalMedicineController, ListOfPatientsInternalMedicineView.
An internalMedicineButtonClicked method change my scene to another (with some other content) but in this new scene, I want to have a button which allows me to go back to MainMenu (goBacktoMainMenuButtonClicked() method). And here occures my problem. How am I able to get reference to MainMenuController (the one which is corresponding with fxml file, created in LogInController) to fill setController() method.
public class LogInController {
MainMenuController mainMenuController = new MainMenuController();
#FXML
private JFXTextField logInTextField;
#FXML
private JFXButton logInButton;
#FXML
private JFXPasswordField passwordTextField;
#FXML
void logInButtonClicked(ActionEvent event) throws IOException {
LogInDAO logInDAO = new LogInDAO();
if(logInDAO.checkIfLoginAndPasswordIsCorrect(logInTextField.getText(),passwordTextField.getText()))
{
FXMLLoader loader = new FXMLLoader(getClass().getResource("/fxml/MainMenu.fxml"));
Window window = logInButton.getScene().getWindow();
Stage stage = (Stage) window;
loader.setController(mainMenuController); // here i'm passing original controller corresponding with fmxl
stage.setScene(new Scene(loader.load()));
}
else
{
(...)
}
}
}
MainMenuCotroller class:
public class MainMenuController {
ContentOfPatientTableView patientTableViewModel = new ContentOfPatientTableView();
(..)
#FXML
void internalMedicineButtonClicked(ActionEvent event) throws IOException {
FXMLLoader loader = new FXMLLoader(getClass().getResource("/fxml/ListOfPatientsInternalMedicineView.fxml"));
Button button = (Button) event.getSource();
Scene scene = button.getScene();
Stage stage = (Stage) scene.getWindow();
loader.setController(new ListOfPatientsInternalMedicineController(patientTableViewModel));
stage.setScene(new Scene(loader.load()));
}
And ListOfPatientsInternalMedicineController class;
public class ListOfPatientsInternalMedicineController {
IPatientDAO patientDAO = new PatientDAO();
ContentOfPatientTableView patientTableViewModel;
public ListOfPatientsInternalMedicineController(ContentOfPatientTableView content) {
patientTableViewModel=content;
}
#FXML
public void goBacktoMainMenuButtonClicked(ActionEvent event)
{
FXMLLoader loader = new FXMLLoader(MainMenuController.class.getResource("/fxml/MainMenuView.fxml");
loader.setController(?????????); // Here if I will pass new MainController() i will create new instance, not this which is corresponding with fxml file. How am I able to refer to instance MainController created in LogInController ?
}
}
Consider using another model to represent the current view. You could implement this along the following lines:
public class ViewState {
private final ContentOfPatientTableView patientTableViewModel ;
private final ReadOnlyObjectWrapper<Parent> currentView = new ReadOnlyObjectWrapper<>();
private Parent logInView ;
private Parent mainMenuView ;
private Parent listOfPatientsMainMedicineView ;
public ViewState(ContentOfPatientTableView patientTableViewModel) {
this.patientTableViewModel = patientTableViewModel ;
}
public ReadOnlyObjectProperty<Parent> currentViewProperty() {
return currentView.getReadOnlyProperty();
}
public void showLogIn() {
if (logInView == null) {
try {
FXMLLoader loader = new FXMLLoader("/fxml/LogIn.fxml");
loader.setController(new LogInController(this));
logInView = loader.load();
} catch (IOException exc) {
// fatal...
throw new UncheckedIOException(exc);
}
}
currentView.set(logInView);
}
public void showMainMenu() {
// similarly...
}
public void showListOfPatientsMainMedicineView() {
// ...
}
}
Now your LogInController can do:
public class LogInController {
private final ViewState viewState ;
#FXML
private JFXTextField logInTextField;
#FXML
private JFXButton logInButton;
#FXML
private JFXPasswordField passwordTextField;
public LogInController(ViewState viewState) {
this.viewState = viewState ;
}
#FXML
void logInButtonClicked(ActionEvent event) {
LogInDAO logInDAO = new LogInDAO();
if(logInDAO.checkIfLoginAndPasswordIsCorrect(logInTextField.getText(),passwordTextField.getText()))
{
viewState.showMainMenu();
}
else
{
(...)
}
}
}
Similarly,
public class MainMenuController {
private final ViewState viewState ;
public MainMenuController(ViewState viewState) {
this.viewState = viewState ;
}
#FXML
void internalMedicineButtonClicked(ActionEvent event) throws IOException {
viewState.showListOfPatientsMainMedicineView();
}
}
and similarly for the other controller.
Note that you are instantiating each controller in ViewState, so just give that class access to each of the other models it may need.
Finally, you boot all this up with
public class MyApp extends Application {
#Override
public void start(Stage primaryStage) {
ViewState viewState = new ViewState(/* pass models here...*/);
viewState.showLogIn();
Scene scene = new Scene(viewState.currentViewProperty().get());
scene.rootProperty().bind(viewState.currentViewProperty());
primaryStage.setScene(scene);
primaryStage.show();
}
}
I have a simple button that i want to click and open a new scene but i made the new scene in another class but it doesn't work and it does not show my errors either.
Here is my Controller class
public class Controller
{
public TextField txtUsername;
public TextField txtEmail;
public TextField txtPass;
public TextField txtPhone;
public Button btnLogin;
}
public void buttonClicked()
{
Chattingform chattingform = new Chattingform ();
}
Here is my Chattingform class
public class Chattingform extends Application
{
#Override
public void start (Stage primaryStage) throws Exception {
FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("Chattingform.fxml"));
try {
Parent root = fxmlLoader.load();
Stage stage = new Stage();
stage.initModality(Modality.APPLICATION_MODAL);
stage.setOpacity(1);
stage.setTitle("Exchat");
stage.setScene(new Scene (root, 450, 450));
stage.showAndWait();
}catch ( IOException io )
{
JOptionPane.showMessageDialog (null, "Could not open ");
}
}
From my experince, all JavaFX Controllers have:
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
I have two fxml window login and main window.Their respective controllers are given below:
public class MainwindowController extends Stage implements Initializable {
#FXML private Button Send;
#FXML private TextField txtBcast;
#FXML private ListView listviewUsers;
#FXML Label lblDisplayName;
/**
* Initializes the controller class.
* #param url
* #param rb
*/
#Override
public void initialize(URL url, ResourceBundle rb) {
ObservableList<String> chat =FXCollections.observableArrayList ("default");
listviewUsers.setItems(chat);
}
public void setLblName(String msg){
lblDisplayName.setText(msg);
}
#FXML public void ActionSend(ActionEvent e){
send();
txtBcast.setText("");
}
private void send() {
if (txtBcast.getText().isEmpty())
return;
// chatManager.sendPublicMsg(format,txtBcast.getText());
}
/**
*
* #param e
* #throws Exception
*/
#FXML public void ActionUserSelected( MouseEvent e) throws Exception{
// String lineRest = e.getActionCommand();
if(e.getClickCount()==2)
{
if(!listviewUsers.getSelectionModel().isEmpty())
{
String str=(String)listviewUsers.getSelectionModel().getSelectedItem();
Parent main= FXMLLoader.load(getClass().getResource("/letschat/fxwindows/Usertab.fxml"));
Scene scene = new Scene(main);
Stage stage = new Stage();
stage.setTitle(str);
stage.setScene(scene);
stage.show();
}
else { JOptionPane.showMessageDialog(null, "Oops! it seems you are trying to click the list view"); }
}
//Stage pstage = (Stage)listUsers.getScene().getWindow();
//pstage.close();
}
}
And
public class LoginwindowController extends Stage implements Initializable {
#FXML private LoginwindowController loginwindowController;
#FXML private MainwindowController mainwindowController;
#FXML private Button btnSignIn;
#FXML private TextField txtDisplayName;
#FXML private ToggleGroup Gender;
#FXML private ComboBox comboStatus;
/**
* Initializes the controller class.
* #param url
* #param rb
*/
#Override
public void initialize(URL url, ResourceBundle rb) {
ObservableList<String> items =FXCollections.observableArrayList ("Online","Offline");
comboStatus.setItems(items);
writeToTextField();
}
public void writeToTextField() {
String username = System.getProperty("user.name");
txtDisplayName.setText(""+ username);
}
#FXML protected void ActionSignIn(ActionEvent event) throws Exception {
mainwindowController.setLblName(txtDisplayName.getText());
InetAddress addr = InetAddress.getLocalHost();
if(addr.isLoopbackAddress())
{
Dialogs.create().message("Oops! It seems you are not connected to any network..\n :(").showError();
}
else{
start(txtDisplayName.getText());// start chat manager
Parent root= FXMLLoader.load(getClass().getResource("/letschat/fxwindows/Mainwindow.fxml"));
Scene scene = new Scene(root);
Stage stage = new Stage();
stage.setTitle("LetsChat-Welcome "+ txtDisplayName.getText());
// Context.getInstance().setDisplayName(txtDisplayName.getText());
stage.setScene(scene);
stage.getIcons().add(new Image("/letschat/images/logo.png"));
Stage pstage = (Stage)btnSignIn.getScene().getWindow();
stage.show();
pstage.close();
}
}
private void start(String name) {
try {
ChatManager ic = new ChatManager(name);
ic.start();
} catch (Exception ex) {
Dialogs.create().message( "Could not start the chat session\nCheck that there no other instances running :(").showError();
}
}
}
I want the label lblDisplayName in main window updated with text from txtDisplay Name in login window when user clicks signin button.can someone help how to do so..soon plz
There are various ways to do this, in your case Login will create the other stage so an easy way is to create a new FXML loader (variable name: myLoader) and, if you want to pass the username of the user as constructor argument you can use myLoader.setControllerFactory and as return:
return clazz == MyController.class ? new MyController(userName) : null;
MyController is the name of the Controller where you want to read the username
If you want to use set methods, with getController you get the controller instance and call the set method (e.g, myController.setUsername());
To create a custom FXML
FXMLLoader myLoader = new FXMLLoader(<if you use relative paths, here you should pass the position);
remember to call the load() because the URI overload is static. (i.e, use getResourceAsStream).
If your application is large and complex, you could use EventBus (which I prefer everywhere..)
I'm not sure I completely understand the relationship between the two controllers, and which are the FXML files that correspond to the controllers, but it looks like the LoginWindowController loads MainWindow.fxml, and I'm guessing that MainWindowController is the controller for MainWindow.fxml.
In that case, you can just do
#FXML protected void ActionSignIn(ActionEvent event) throws Exception {
InetAddress addr = InetAddress.getLocalHost();
if(addr.isLoopbackAddress())
{
Dialogs.create().message("Oops! It seems you are not connected to any network..\n :(").showError();
}
else{
start(txtDisplayName.getText());// start chat manager
FXMLLoader loader = new FXMLLoader(getClass().getResource("/letschat/fxwindows/Mainwindow.fxml"));
Parent root= loader.load();
MainWindowController mainWindowController = loader.getController();
mainWindowController.setLblName(txtDisplayName.getText());
Scene scene = new Scene(root);
Stage stage = new Stage();
stage.setTitle("LetsChat-Welcome "+ txtDisplayName.getText());
// Context.getInstance().setDisplayName(txtDisplayName.getText());
stage.setScene(scene);
stage.getIcons().add(new Image("/letschat/images/logo.png"));
Stage pstage = (Stage)btnSignIn.getScene().getWindow();
stage.show();
pstage.close();
}
}