private void showSplash(
final Stage initStage, Task<?> task, InitCompletionHandler initCompletionHandler) {
progressText.textProperty().bind(task.messageProperty());
loadProgress.progressProperty().bind(task.progressProperty());
task.stateProperty()
.addListener(
(observableValue, oldState, newState) -> {
if (newState == Worker.State.SUCCEEDED) {
loadProgress.progressProperty().unbind();
loadProgress.setProgress(1);
initStage.toFront();
FadeTransition fadeSplash = new FadeTransition(Duration.seconds(1.2), splashLayout);
fadeSplash.setFromValue(1.0);
fadeSplash.setToValue(0.0);
fadeSplash.setOnFinished(actionEvent -> initStage.hide());
fadeSplash.play();
initCompletionHandler.complete();
} // todo add code to gracefully handle other task states.
});
Scene splashScene = new Scene(splashLayout);
initStage.initStyle(StageStyle.UNDECORATED);
final Rectangle2D bounds = Screen.getPrimary().getBounds();
initStage.setScene(splashScene);
initStage.setX(bounds.getMinX() + bounds.getWidth() / 2 - SPLASH_WIDTH / 2);
initStage.setY(bounds.getMinY() + bounds.getHeight() / 2 - SPLASH_HEIGHT / 2);
initStage.show();
}
@Override
public void start(Stage primaryStage) throws Exception {
// creating Layout
final Group root = new Group();
Scene scene = new Scene(root, 400, 400);
primaryStage.setScene(scene);
primaryStage.setResizable(false);
StackPane waitingPane = new StackPane();
final ProgressBar progress = new ProgressBar();
Label load = new Label("loading things...");
progress.setTranslateY(-25);
load.setTranslateY(25);
waitingPane.getChildren().addAll(new Rectangle(400, 400, Color.WHITE), load, progress);
root.getChildren().add(waitingPane);
// Task for computing the Panels:
Task<Void> task =
new Task<Void>() {
@Override
protected Void call() throws Exception {
for (int i = 0; i < 20; i++) {
try {
Thread.sleep(new Random().nextInt(1000));
} catch (InterruptedException ex) {
ex.printStackTrace();
}
final double prog = i * 0.05;
Platform.runLater(
new Runnable() {
public void run() {
progress.setProgress(prog);
}
});
}
return null;
}
};
// stateProperty for Task:
task.stateProperty()
.addListener(
new ChangeListener<Worker.State>() {
@Override
public void changed(
ObservableValue<? extends State> observable,
State oldValue,
Worker.State newState) {
if (newState == Worker.State.SUCCEEDED) {
loadPanels(root);
}
}
});
// start Task
new Thread(task).start();
primaryStage.show();
}