My problem is that all the examples of using FileChooser requires you to pass in a stage. Only problem is that my UI is defined in an fxml file, which uses a controller class separate from the main stage.
#FXML protected void locateFile(ActionEvent event) {
FileChooser chooser = new FileChooser();
chooser.setTitle("Open File");
chooser.showOpenDialog(???);
}
What do I put at the ??? to make it work? Like I said, I don't have any references to any stages in the controller class, so what do I do?
For any node in your scene (for example, the root node; but any node you have injected with #FXML will do), do
chooser.showOpenDialog(node.getScene().getWindow());
You don't have to stick with the Stage created in the Application you can either:
#FXML protected void locateFile(ActionEvent event) {
FileChooser chooser = new FileChooser();
chooser.setTitle("Open File");
File file = chooser.showOpenDialog(new Stage());
}
Or if you want to keep using the same stage then you have to pass the stage to the controller before:
FXMLLoader loader = new FXMLLoader(getClass().getResource("yourFXMLDocument.fxml"));
Parent root = (Parent)loader.load();
MyController myController = loader.getController();
myController.setStage(stage);
and you will have the main stage of the Application there to be used as you please.
From a menu item
public class SerialDecoderController implements Initializable {
#FXML
private MenuItem fileOpen;
#Override
public void initialize(URL url, ResourceBundle rb) {
// TODO
}
public void fileOpen (ActionEvent event) {
FileChooser fileChooser = new FileChooser();
fileChooser.setTitle("Open Resource File");
fileChooser.showOpenDialog(fileOpen.getParentPopup().getScene().getWindow());
}
Alternatively, what worked for me: simply put null.
#FXML
private void onClick(ActionEvent event) {
File file = fileChooser.showOpenDialog(null);
if (file != null) {
//TODO
}
}
Related
I'm making an application with JavaFX and Scene Builder.
I have two controllers:Controller and FontController
I have Main class that launch my program and open Stage with first fontroller (Controller)
public class Main extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) throws Exception {
try {
Parent root = FXMLLoader.load(getClass().getResource("/card/card.fxml"));
Scene scene = new Scene(root, 1600, 600);
primaryStage.setScene(scene);
scene.getStylesheets().add(getClass().getResource("style.css").toExternalForm());
primaryStage.initStyle(StageStyle.UNDECORATED);
primaryStage.setMaximized(true);
primaryStage.setResizable(true);
primaryStage.getIcons().add(new Image("card/resources/logo-icon.png"));
primaryStage.show();
//adding resize and drag primary stage
ResizeHelper.addResizeListener(primaryStage);
//assign ALT+ENTER to maximize window
final KeyCombination kb = new KeyCodeCombination(KeyCode.ENTER, KeyCombination.CONTROL_DOWN);
scene.addEventHandler(KeyEvent.KEY_PRESSED, new EventHandler<KeyEvent>() {
#Override
public void handle(KeyEvent event) {
if (kb.match(event)) {
primaryStage.setMaximized(!primaryStage.isMaximized());
primaryStage.setResizable(true);
}
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
}
There is a label and a button in Controller. When I click on the button a method is called and new window with second controller appears(FontController):
#FXML private Button btnFont;
#FXML private Label category1
#FXML
void changeFont(ActionEvent event) {
try {
FXMLLoader fxmlLoader = new
FXMLLoader(getClass().getResource("font.fxml"));
Parent rootFont = (Parent) fxmlLoader.load();
Stage stage = new Stage();
stage.setTitle("Select Font");
stage.setScene(new Scene(rootFont));
stage.show();
} catch (Exception e) {
System.out.println("can't load new window");
}
}
There is the button "OK" and label in FontCOntroller:
#FXML private Label fontLabel;
#FXML private Button btnFontOk;
Please tell me, what should I do to send and apply text from label in FontController when I click on the burtton "OK" to label in Controller?
SOLUTION FOUND:
I created class "Context" in my project directory to make all controllers communicate each other. You can add as many controllers as you want there.
Here it looks like:
package card;
public class Context {
private final static Context instance = new Context();
public static Context getInstance() {
return instance;
}
private Controller controller;
public void setController(Controller controller) {
this.controller=controller;
}
public Controller getController() {
return controller;
}
private FontController fontController;
public void setFontController(FontController fontController) {
this.fontController=fontController;
}
public FontController getFontController() {
return fontController;
}
}
Controller:
I created getters and setters (ALT + Insert in IDEA) for Label that I wanna change
public Label getCategory1() {
return category1;
}
public void setCategory1(Label category1) {
this.category1 = category1;
}
To get FontController variables and methods through Context class I placed line of code
//getting FontController through Context Class
FontController fontCont = Context.getInstance().getFontController();
I registered Controller in Context class through my initialize method (my class implements Initializable)
#FXML
public void initialize(URL location, ResourceBundle resources) {
//register Controller in Context Class
Context.getInstance().setController(this);
}
FontController:
to get Controller variables and methods I placed this code:
//getting Controller variables and methods through Context class
Controller cont = Context.getInstance().getController();
I also registered FontController in Context class through initialize method:
#Override
public void initialize(URL location, ResourceBundle resources) {
//register FontController in Context Class
Context.getInstance().setFontController(this);
}
Method that send text and text color from label in this FontController to label in Controller when I click on button:
#FXML
void applyFont(ActionEvent event) {
cont.getCategory1().setText(fontLabel.getText());
cont.getCategory1().setTextFill(fontLabel.getTextFill());
}
*By creating Context class you can make controllers communicate each other and create as many controllers as you want there. Controllers see variables and methods of each other
I'm creating an JavaFX application with Scene Builder. I added a video at the beginning. So I wanna play video before my application start in fullscreen mode.
The Problem is when it is stopped I see only black screeen and nothing happened, I guess it is because video is fullscreen and it is not automatically closed.
I also have a bug before the video starts, some blink of my main window .I guess it is because video is placed in the controller that begins after my application starts.
How to close video or remove it after finish?
How to place video in main class?
Main Class
public class Main extends Application {
public static void main(String[] args) {
launch(args);
}
#Override
public void start(Stage primaryStage) throws Exception {
try {
FXMLLoader loader = new
FXMLLoader(getClass().getResource("resources/fxml/card.fxml"));
Parent root = loader.load();
Scene scene = new Scene(root, 1600, 600);
primaryStage.setScene(scene);
scene.getStylesheets().add(getClass().getResource("style.css").toExternalForm());
primaryStage.initStyle(StageStyle.UNDECORATED);
primaryStage.setMaximized(true);
primaryStage.setResizable(true);
primaryStage.getIcons().add(new Image("src/card/resources/logo-icon.png"));
primaryStage.show();
//adding resize and drag primary stage
ResizeHelper.addResizeListener(primaryStage);
//assign ALT+ENTER to maximize window
final KeyCombination kb = new KeyCodeCombination(KeyCode.ENTER,
KeyCombination.CONTROL_DOWN);
scene.addEventHandler(KeyEvent.KEY_PRESSED, new EventHandler<KeyEvent>()
{
#Override
public void handle(KeyEvent event) {
if (kb.match(event)) {
primaryStage.setMaximized(!primaryStage.isMaximized());
primaryStage.setResizable(true);
Controller cont = Context.getInstance().getController();
if (!primaryStage.isMaximized()) {
cont.getBtnFont().setPrefWidth(20);
cont.getBtnPalette().setPrefWidth(20);
cont.getBtnQuestCards().setPrefWidth(20);
cont.getBtnNonQuestCards().setPrefWidth(20);
cont.getRandomCard().setTopAnchor(cont.getRandomCard(), 80.0);
cont.getRandomCard().setBottomAnchor(cont.getRandomCard(), 70.0);
cont.getRandomCard().setLeftAnchor(cont.getRandomCard(), 300.0);
cont.getRandomCard().setRightAnchor(cont.getRandomCard(), 200.0);
cont.getRandomCardBack().setTopAnchor(cont.getRandomCardBack(), 80.0);
cont.getRandomCardBack().setBottomAnchor(cont.getRandomCardBack(), 70.0);
cont.getRandomCardBack().setLeftAnchor(cont.getRandomCardBack(), 300.0);
cont.getRandomCardBack().setRightAnchor(cont.getRandomCardBack(), 200.0);
cont.getRectRandom().setWidth(1060);
cont.getRectRandom().setHeight(410);
cont.getRectRandomBack().setWidth(1060);
cont.getRectRandomBack().setHeight(410);
cont.getRandomCard().setPrefWidth(800);
cont.getRandomCard().setPrefHeight(200);
cont.getRandomCardBack().setPrefWidth(800);
cont.getRandomCardBack().setPrefHeight(200);
} else if (primaryStage.isMaximized()){
cont.getBtnFont().setPrefWidth(50);
cont.getBtnPalette().setPrefWidth(50);
cont.getBtnQuestCards().setPrefWidth(50);
cont.getBtnNonQuestCards().setPrefWidth(50);
cont.getRandomCard().setTopAnchor(cont.getRandomCard(), 150.0);
cont.getRandomCard().setBottomAnchor(cont.getRandomCard(), 130.0);
cont.getRandomCard().setLeftAnchor(cont.getRandomCard(), 450.0);
cont.getRandomCard().setRightAnchor(cont.getRandomCard(), 270.0);
cont.getRandomCardBack().setTopAnchor(cont.getRandomCardBack(), 150.0);
cont.getRandomCardBack().setBottomAnchor(cont.getRandomCardBack(), 130.0);
cont.getRandomCardBack().setLeftAnchor(cont.getRandomCardBack(), 450.0);
cont.getRandomCardBack().setRightAnchor(cont.getRandomCardBack(), 270.0);
cont.getRectRandom().setWidth(1160);
cont.getRectRandom().setHeight(760);
cont.getRectRandomBack().setWidth(1160);
cont.getRectRandomBack().setHeight(760);
cont.getRandomCard().setPrefWidth(800);
cont.getRandomCard().setPrefHeight(400);
cont.getRandomCardBack().setPrefWidth(800);
cont.getRandomCardBack().setPrefHeight(400);
}
}
}
});
} catch (Exception e) {
e.printStackTrace();
}
}
}
Controller CLass:
#FXML
public void initialize(URL location, ResourceBundle resources) {
String path = new File("src/card/resources/intro.mp4").getAbsolutePath();
me = new Media(new File(path).toURI().toString());
mp = new MediaPlayer(me);
media.setMediaPlayer(mp);
mp.setAutoPlay(true);
media.setSmooth(true);
}
I'm not sure about the blink you see, but it should be easy to react when the video stops.
The JavaFX MediaPlayer class provides a method statusProperty() which returns an object of type ReadOnlyObjectProperty<MediaPlayer.Status>.
The class ReadOnlyObjectProperty<T> implements the interface ObservableValue<T> which provides the method addListener(ChangeListener<? super T>).
The interface ChangeListener<T> is a "functional interface" which requires an implementation for the method void changed(ObservableValue<T> observable, T oldValue, T newValue).
So, putting it together, you should be able to create a listener which will react to the changing status of your MediaPlayer:
private void addStatusListener(MediaPlayer mp) {
ReadOnlyObjectProperty<MediaPlayer.Status> statusProperty = mp.
statusProperty();
statusProperty.addListener((v, o, n) -> playerStatusChanged(v, o, n));
}
private void playerStatusChanged(
ObservableValue<? extends MediaPlayer.Status> observable,
MediaPlayer.Status oldValue, MediaPlayer.Status newValue) {
if (oldValue == MediaPlayer.Status.PLAYING &&
newValue == MediaPlayer.Status.STOPPED) {
// TODO: CALL METHOD TO REACT TO VIDEO BEING STOPPED.
}
}
SOLUTION FOUND!
I made animation to opacity of MediaView:
#FXML public void initialize(URL location, ResourceBundle resources) {
mp = new MediaPlayer(new Media(this.getClass().getResource(MEDIA_URL).toExternalForm()));
media.setMediaPlayer(mp);
media.setSmooth(true);
mp.setAutoPlay(true);
Timeline tm = new Timeline(new KeyFrame(Duration.millis(3000), new KeyValue(media.opacityProperty(), 0.0)));
tm.setDelay(Duration.millis(5500));
tm.play();
}
I have a reset and Draw button on a slide panel. I choose a desired file from file chooser, which is in RootLayout class, and pass the file path to a controller class. Then it does some processes and initializes field in DataCunstructor class. By clicking on Draw a TreeTableView will be shown on slide pane, which is in MainController class. When I click my reset button the table will be cleared but I do not know how to reset the chosen path. After reseting if I click Draw again the same treetable comes up. and If I choose another file and hit Draw, the program breaks.
How can I reset all fields including the path to null, and be able to choose another file and process that one?
Here is my Draw and Reset in MainController class:
public void treeTableDraw(ActionEvent event) {
drawTable();//creates the TreeTableView
numberOfFunctions= dc.getFuncAll().size();
numberOfOrganizations = dc.getSortedAssignedOrg().size();
funcLabel.setText(numberOfFunctions+"");//set Lable value
orgLabel.setText(numberOfOrganizations + "");//set Lable value
}
public void treeTableReset(ActionEvent event){
funcLabel.setText("0");//reset Label
orgLabel.setText("0");
treeTable.getColumns().clear(); //clears columns (TreeTable)
///////////////////////////////////////
//non of the following did the path reset//
///////////////////////////////////////
//dc = new DataConstructor();
//Controller controller = new Controller();
//controller.setPath(null);
RootLayoutController rlc = loader.getController();
rlc.reset();
}
My File Chooser in RootLayout class:
#FXML
private void handleOpen() {
FileChooser fileChooser = new FileChooser();
// Set extension filter
FileChooser.ExtensionFilter extFilter = new FileChooser.ExtensionFilter(
"3lgm2 files (*.z3lgm)", "*z3lgm");
fileChooser.getExtensionFilters().add(extFilter);
// Show save file dialog
File file = fileChooser.showOpenDialog(main.getPrimaryStage());
path = file.toString();
if (path != null) {
new Controller(path);
}
}
public void reset(){
path = null;
}
I add OverView at the center of rootlayout here at main class:
public class Main extends Application {
private Stage primaryStage;
private BorderPane rootLayout;
//private ObservableList<DataConstructor> treeTableData = FXCollections.observableArrayList();
#Override
public void start(Stage primaryStage) {
this.primaryStage = primaryStage;
this.primaryStage.setTitle("IT-Saturation");
initRootLayout();
showOverView();
}
private void showOverView() {
try{
FXMLLoader loader = new FXMLLoader();
loader.setLocation(Main.class.getResource("/view/OverView.fxml"));
AnchorPane overView = (AnchorPane) loader.load();
rootLayout.setCenter(overView);
}catch(IOException e){
e.printStackTrace();
}
}
private void initRootLayout() {
try {
FXMLLoader loader = new FXMLLoader();
loader.setLocation(Main.class.getResource("/view/RootLayout.fxml"));
rootLayout = (BorderPane) loader.load();
//show scene containing the root layout
Scene scene = new Scene(rootLayout);
scene.getStylesheets().add(
getClass().getResource("application.css").toExternalForm());
primaryStage.setScene(scene);
//gives controller access to main app
RootLayoutController controller = loader.getController();
controller.setMainApp(this);
primaryStage.show();
} catch (IOException e) {
e.printStackTrace();
}
File file = getFilePath();
if (file != null) {
loadDataFromFile(file);
}
}
/**
* Returns the main stage.
* #return primaryStage
*/
public Stage getPrimaryStage() {
return primaryStage;
}
public static void main(String[] args) {
launch(args);
}
}
Just declare a reset() in your RootLayout class:
public class RootLayout {
private Path path;
#FXML
private void handleOpen() {
...
path = file.toString();
}
public void reset() {
path= null;
}
}
Never construct the constructor using the keyword new, always get it from the FXMLLoader.
public class MainController {
...
RootLayoutController controller = loader.getController();
controller.reset();
...
}
I have 2 controller for 2 fxml files. In one controller I have a handleOpen function which opens a file chooser and gives the path to a Class which I have called model. Then on the other controller a function, treeTableDraw gets this path, after clicking on Draw Button and runs the program. I have Another Button to reset the program. It sets the result back to null, but when open another file to run, the program crashes, because the path is null. How can I reset the program and make it use the new path which is selected from open file chooser?
//Gets the path from model and runs the program
public void treeTableDraw(ActionEvent event) {
new Controller(model.getText());
drawTable();
numberOfFunctions = dc.getFuncAll().size();
numberOfOrganizations = dc.getSortedAssignedOrg().size();
funcLabel.setText(numberOfFunctions + "");
orgLabel.setText(numberOfOrganizations + "");
btnDraw.setDisable(true);
}
/**
* Clrears TreeTableView and sets back labels
*
* #param event
*/
public void treeTableReset(ActionEvent event) {
btnDraw.setDisable(false);
model.setText(null);
funcLabel.setText("0");
orgLabel.setText("0");
treeTable.getColumns().clear();
}
This is RootLayout class which has open file function:
#FXML
private void handleOpen() {
FileChooser fileChooser = new FileChooser();
// Set extension filter
FileChooser.ExtensionFilter extFilter = new FileChooser.ExtensionFilter(
"3lgm2 files (*.z3lgm)", "*z3lgm");
fileChooser.getExtensionFilters().add(extFilter);
// Show open file dialog
File file = fileChooser.showOpenDialog(main.getPrimaryStage());
if (file != null) {
path = file.toString();
model.setText(path);
}
}
Here is the model class
public class Model {
private final StringProperty text = new SimpleStringProperty();
public StringProperty textProperty() {
return text;
}
public final String getText() {
return textProperty().get();
}
public final void setText(String text) {
textProperty().set(text);
}
}
This is the main, where I combine two fxmls and set stage:
public class Main extends Application {
private Stage primaryStage;
private BorderPane rootLayout;
private Model model = new Model();
#Override
public void start(Stage primaryStage) {
this.primaryStage = primaryStage;
this.primaryStage.setTitle("IT-Saturation");
initRootLayout();
showOverView();
}
private void showOverView() {
try {
FXMLLoader loader = new FXMLLoader();
loader.setLocation(Main.class.getResource("/view/OverView.fxml"));
loader.setController(new OverViewController(model));
AnchorPane overView = (AnchorPane) loader.load();
rootLayout.setCenter(overView);
} catch (IOException e) {
e.printStackTrace();
}
}
private void initRootLayout() {
try {
FXMLLoader loader = new FXMLLoader();
loader.setLocation(Main.class.getResource("/view/RootLayout.fxml"));
loader.setController(new RootLayoutController(model));
rootLayout = (BorderPane) loader.load();
// show scene containing the root layout
Scene scene = new Scene(rootLayout);
scene.getStylesheets().add(
getClass().getResource("application.css").toExternalForm());
primaryStage.setScene(scene);
// gives controller access to main
RootLayoutController controller = loader.getController();
controller.setMainApp(this);
primaryStage.show();
} catch (IOException e) {
e.printStackTrace();
}
}
/**
* Returns the main stage.
*
* #return primaryStage
*/
public Stage getPrimaryStage() {
return primaryStage;
}
public static void main(String[] args) {
launch(args);
}
public void showMostComputerizedStatistics() {
try {
// Load the fxml file and create a new stage for the popup.
FXMLLoader loader = new FXMLLoader();
loader.setLocation(Main.class
.getResource("view/BirthdayStatistics.fxml"));
AnchorPane page = (AnchorPane) loader.load();
Stage dialogStage = new Stage();
dialogStage.setTitle("Birthday Statistics");
dialogStage.initModality(Modality.WINDOW_MODAL);
dialogStage.initOwner(primaryStage);
Scene scene = new Scene(page);
dialogStage.setScene(scene);
// Set the persons into the controller.
MostComputerizedController controller = loader.getController();
dialogStage.show();
} catch (IOException e) {
e.printStackTrace();
}
}
}
The problem was not the path. I had to reset the data which got initialized at the the former run of program. So after setting path to null I just newed the instance of class which had reference to data.
...
public void treeTableReset(ActionEvent event) {
btnDraw.setDisable(false);
//model.setText(null);
funcLabel.setText("0");
orgLabel.setText("0");
treeTable.getColumns().clear();
dc = new DataConstructor();
}
I have an app in JavaFX with .FXML file and i add a button to the scene. Then i tried to add accelerator to it but when it launches it throws NullPointerException. Why it doesn't work and how to solve this.
#FXML
Button addQuickNote;
#FXML
public void handlequickNote(ActionEvent e) {
String text = SampleController.getSelectedText();
if (text != null) {
SampleController.profileManager.insertNote(DataParser.getNote(text));
}
}
#Override
public void initialize(URL url, ResourceBundle rb) {
addQuickNote.getScene().getAccelerators().put(new KeyCodeCombination(KeyCode.Q, KeyCombination.SHORTCUT_DOWN), new Runnable() {
#Override
public void run() {
addQuickNote.fire();
}
});
}
My .fxml is pretty complicated because it contains whole module for my app so i paste only a line with the button. The button is placed in the ToolBar.
<Button fx:id="addQuickNote" mnemonicParsing="false" onAction="#handlequickNote" prefWidth="77.0" text="Z tekstu" />
I'm loading .fxml as a part of main scene. I'm doing this by this code.
try {
panel = FXMLLoader.load(getClass().getResource("Notes.fxml"));
} catch (IOException ex) {
showErrorDialog ....;
}
rightPanel.getChildren().add(panel);
mainPanel.setRight(rightPanel);
As user714965 mentionend your Scene was not constructed fully yet and therefor addQuickNote.getScene() is null.
Another solution might be something like this:
#Override
public void initialize(URL url, ResourceBundle rb) {
Platform.runLater(() -> {
addQuickNote.getScene().getAccelerators().put(new KeyCodeCombination(KeyCode.Q, KeyCombination.SHORTCUT_DOWN), () -> {
addQuickNote.fire();
});
});
}
I guess that addQuickNote.getScene() is null because your controls are not fully initialized at this point and the Button just has no Scene set.
Solve this by not calling addQuickNote.getScene().getAccelerators()... in the initialize method. After your Controller-initialization in your main-method do another call to your controller to a method in which you are initialize your accelerators.
EDIT:
Your start method seems to be incomplete. It have to look something like this:
#Override
public void start(Stage primaryStage) throws IOException {
FXMLLoader loader = new FXMLLoader();
AnchorPane page = (AnchorPane) loader.load(getClass().getResourceAsStream("MainScene.fxml"));
Scene scene = new Scene(page);
MainSceneController controller = loader.getController();
controller.initializeAccelerators();
primaryStage.setScene(scene);
primaryStage.show();
}