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package test;

import javafx.beans.value.ObservableValue;
import javafx.scene.*;
import java.util.*;
import javafx.scene.Group;
import javafx.scene.shape.*;

import javafx.scene.paint.Color;
import javafx.animation.*;
import javafx.beans.binding.Bindings;
import javafx.beans.property.*;
import javafx.beans.value.ChangeListener;
import javafx.event.EventHandler;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.ScrollPane.ScrollBarPolicy;
import javafx.scene.input.MouseEvent;
import javafx.util.Duration;

public class Loop extends Parent {
    
    private Line playbackHead;
    private double width;

    private Timeline headTrans;
    
    
    public Loop(int width, int height) {
        super();
        this.width = width;
        
        Rectangle borderRect = new Rectangle(width,height);
        borderRect.setFill(Color.TRANSPARENT);
        borderRect.setStroke(Color.BLACK);
        getChildren().add(borderRect);
        
        Group loopAreaGroup = new Group();
        getChildren().add(loopAreaGroup);

        playbackHead = new Line();
        playbackHead.setStrokeWidth(2);
        playbackHead.setEndY(height);
        loopAreaGroup.getChildren().add(playbackHead);
        
        
        playbackHead.translateXProperty().addListener(new ChangeListener<Number>() {
            public void changed(ObservableValue<? extends Number> observable, Number oldValue, Number newValue) {
                System.out.println("x: " + playbackHead.getTranslateX());
            }
        });
        
    }

    public void startScrolling() {

        headTrans = new Timeline();
        KeyValue kv = new KeyValue(playbackHead.translateXProperty(),0);
        KeyFrame kf = new KeyFrame(Duration.ZERO,kv);
        headTrans.getKeyFrames().add(kf);
        KeyValue kv2 = new KeyValue(playbackHead.translateXProperty(),width);
        KeyFrame kf2 = new KeyFrame(
                Duration.millis(3000),
                kv2);
        headTrans.getKeyFrames().add(kf2);
        headTrans.setCycleCount(Timeline.INDEFINITE);

        headTrans.playFromStart();
    }

    public void stopScrolling() {
        if (headTrans != null)
            headTrans.stop();

    }
}