package bug;

import javafx.animation.AnimationTimer;
import javafx.animation.FadeTransition;
import javafx.animation.SequentialTransition;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.util.Duration;

/**
 *
 * @author akouznet
 */
public class Bug extends Application {
    
    private static final int FADE_TIMEOUT = 150;
    private SequentialTransition fadeSequentialTransition = null;
    int counter = 0;
    
    @Override
    public void start(Stage primaryStage) {
        Label navSymbol = new Label("navSymbol");
        Label time = new Label("time");
        StackPane parent = new StackPane(navSymbol);
        
        Button btn = new Button();
        btn.setText("Test");
        btn.setOnAction(new EventHandler<ActionEvent>() {
            
            @Override
            public void handle(ActionEvent event) {
                test();
                Platform.runLater(() -> test());
                
                new AnimationTimer() {
                    
                    int j = 0;

                    @Override
                    public void handle(long now) {
                        if (j < 99) {
                            test();
                            j++;
                        }
                        parent.setVisible(true);
                    }
                    
                }.start();
            }

            private void test() {
                for (int i = 0; i < 3; i++) {
                    if (fadeSequentialTransition != null) {
                        fadeSequentialTransition.stop();
                    }
                    FadeTransition fadeOut = new FadeTransition(Duration.millis(FADE_TIMEOUT * navSymbol.getOpacity()));
                    fadeOut.setFromValue(navSymbol.getOpacity());
                    fadeOut.setToValue(0);
                    fadeOut.setOnFinished(e -> navSymbol.setText(Integer.toString(counter++)));
                    FadeTransition fadeIn = new FadeTransition(Duration.millis(FADE_TIMEOUT));
                    fadeIn.setFromValue(0);
                    fadeIn.setToValue(1);
                    fadeSequentialTransition = new SequentialTransition(navSymbol, fadeOut, fadeIn);
                    fadeSequentialTransition.play();
                    fadeSequentialTransition.setOnFinished(e -> System.out.println("Finished"));
                    time.textProperty().bind(fadeSequentialTransition.currentTimeProperty().asString());
                    
                    parent.setVisible(!parent.isVisible());
                }
            }
        });
        
        VBox root = new VBox(btn, parent, time);
        
        Scene scene = new Scene(root, 300, 250);
        
        primaryStage.setTitle("Hello World!");
        primaryStage.setScene(scene);
        primaryStage.show();
    }

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        launch(args);
    }
    
}