package пакет1;

import module javafx.controls;

public class Метроном extends Application {

    DoubleProperty startXVal = new SimpleDoubleProperty(100.0);

    Button startButton;
    Button pauseButton;
    Button resumeButton;
    Button stopButton;
    Line line;
    Timeline anim;

    public static void main(String[] args) { Application.launch(args);}

    @Override
    public void start(Stage stage) {
        anim = new Timeline(
                new KeyFrame(new Duration(0.0), new KeyValue(startXVal, 100.)),
                new KeyFrame(new Duration(1000.0), new KeyValue(startXVal, 300., Interpolator.LINEAR))
        );
        anim.setAutoReverse(true);
        anim.setCycleCount(Animation.INDEFINITE);
        line = new Line(0, 50, 200, 400);
        line.setStrokeWidth(4);
        line.setStroke(Color.BLUE);
        startButton = new Button("Старт");
        startButton.setOnAction(e -> anim.playFromStart());
        pauseButton = new Button("Пауза");
        pauseButton.setOnAction(e -> anim.pause());
        resumeButton = new Button("Возобновить");
        resumeButton.setOnAction(e -> anim.play());
        stopButton = new Button("Стоп");
        stopButton.setOnAction(e -> anim.stop());
        HBox commands = new HBox(10, startButton, pauseButton, resumeButton, stopButton);
        commands.setLayoutX(60);
        commands.setLayoutY(420);
        Group group = new Group(line, commands);
        Scene scene = new Scene(group, 400, 500);

        line.startXProperty().bind(startXVal);
        startButton.disableProperty().bind(anim.statusProperty().isNotEqualTo(Animation.Status.STOPPED));
        pauseButton.disableProperty().bind(anim.statusProperty().isNotEqualTo(Animation.Status.RUNNING));
        resumeButton.disableProperty().bind(anim.statusProperty().isNotEqualTo(Animation.Status.PAUSED));
        stopButton.disableProperty().bind(anim.statusProperty().isEqualTo(Animation.Status.STOPPED));

        stage.setScene(scene);
        stage.setTitle("Метроном");
        stage.show();
    }
}