TaskBasedSplash.java

import javafx.animation.FadeTransition;
import javafx.application.Application;
import javafx.beans.property.ReadOnlyObjectProperty;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.concurrent.Task;
import javafx.concurrent.Worker;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.geometry.Rectangle2D;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.control.ListView;
import javafx.scene.control.ProgressBar;
import javafx.scene.effect.DropShadow;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.Pane;
import javafx.scene.layout.VBox;
import javafx.stage.Screen;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
import javafx.util.Duration;

/** Example of displaying a splash page for a standalone JavaFX application */
public class TaskBasedSplash extends Application {
  private Pane splashLayout;
  private ProgressBar loadProgress;
  private Label progressText;
  private Stage mainStage;
  private static final int SPLASH_WIDTH = 676;
  private static final int SPLASH_HEIGHT = 227;

  public static void main(String[] args) throws Exception { launch(args); }

  @Override public void init() {
    ImageView splash = new ImageView(new Image("http://fxexperience.com/wp-content/uploads/2010/06/logo.png"));
    loadProgress = new ProgressBar();
    loadProgress.setPrefWidth(SPLASH_WIDTH - 20);
    progressText = new Label("Will find friends for peanuts . . .");
    splashLayout = new VBox();
    splashLayout.getChildren().addAll(splash, loadProgress, progressText);
    progressText.setAlignment(Pos.CENTER);
    splashLayout.setStyle("-fx-padding: 5; -fx-background-color: cornsilk; -fx-border-width:5; -fx-border-color: linear-gradient(to bottom, chocolate, derive(chocolate, 50%));");
    splashLayout.setEffect(new DropShadow());
  }
  
  @Override public void start(final Stage initStage) throws Exception {
    final Task<ObservableList<String>> friendTask = new Task() {
      @Override protected ObservableList<String> call() throws InterruptedException {
        ObservableList<String> foundFriends = 
          FXCollections.<String>observableArrayList();
        ObservableList<String> availableFriends = 
          FXCollections.observableArrayList("Fili", "Kili", "Oin", "Gloin", "Thorin", "Dwalin", "Balin", "Bifur", "Bofur", "Bombur", "Dori", "Nori", "Ori");

        updateMessage("Finding friends . . .");
        for (int i = 0; i < availableFriends.size(); i++) {
          Thread.sleep(400);
          updateProgress(i+1, availableFriends.size());
          String nextFriend = availableFriends.get(i);
          foundFriends.add(nextFriend);
          updateMessage("Finding friends . . . found " + nextFriend);
        }
        Thread.sleep(400);
        updateMessage("All friends found.");

        return foundFriends;
      }
    };

    showSplash(initStage, friendTask);
    new Thread(friendTask).start();
    showMainStage(friendTask.valueProperty());
  }

  private void showMainStage(ReadOnlyObjectProperty<ObservableList<String>> friends) {
    mainStage = new Stage(StageStyle.DECORATED);
    mainStage.setTitle("My Friends");
    mainStage.setIconified(true);
    mainStage.getIcons().add(new Image("http://cdn1.iconfinder.com/data/icons/Copenhagen/PNG/32/people.png"));
    
    final ListView<String> peopleView = new ListView<>();
    peopleView.itemsProperty().bind(friends);
    
    mainStage.setScene(new Scene(peopleView));
    mainStage.show();
  }

  private void showSplash(final Stage initStage, Task task) {
    progressText.textProperty().bind(task.messageProperty());
    loadProgress.progressProperty().bind(task.progressProperty());
    task.stateProperty().addListener(new ChangeListener<Worker.State>() {
      @Override public void changed(ObservableValue<? extends Worker.State> observableValue, Worker.State oldState, Worker.State newState) {
        if (newState == Worker.State.SUCCEEDED) {
          loadProgress.progressProperty().unbind();
          loadProgress.setProgress(1);
          mainStage.setIconified(false);
          initStage.toFront();
          FadeTransition fadeSplash = new FadeTransition(Duration.seconds(1.2), splashLayout);
          fadeSplash.setFromValue(1.0);
          fadeSplash.setToValue(0.0);
          fadeSplash.setOnFinished(new EventHandler<ActionEvent>() {
            @Override public void handle(ActionEvent actionEvent) {
              initStage.hide();
            }
          });
          fadeSplash.play();
        } // 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();
  }
}