package bluej.utility.javafx;

import javafx.animation.KeyFrame;
import javafx.animation.KeyValue;
import javafx.animation.Timeline;
import javafx.beans.property.SimpleDoubleProperty;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.paint.Color;
import javafx.scene.shape.ArcType;
import javafx.util.Duration;

import java.util.function.Consumer;




| Created by neil on 21/03/2016.
|
public class CircleCountdown
extends Canvas{    
   
   private final SimpleDoubleProperty time = new SimpleDoubleProperty(1);
   
   private final Timeline timeline;

   
   
   public CircleCountdown(double size, Color strokeColor, Duration duration)
   {
      super(size, size);
       
      timeline = new Timeline(20.0, new KeyFrame(duration, new KeyValue(time, 0)));

       
      FXConsumer<Number> update = t -> {
      GraphicsContext gc = getGraphicsContext2D();
      gc.clearRect(0, 0, size, size);
      gc.setStroke(strokeColor);
      gc.setLineWidth(3);
      gc.strokeArc(size * 0.5, size * 0.5, size * 0.5 - 4, size * 0.5 - 4, 90, t.doubleValue() * 360, ArcType.OPEN);         
      };
   update.accept(1.0);
   JavaFXUtil.addChangeListener(time, update);

   timeline.play();     
   }

   
public void addOnFinished(FXRunnable action)
   {
   JavaFXUtil.addChangeListener(time, t -> {
   if (t.doubleValue() == 0.0)
   action.run();         
   });
}

   
public void stop()
   {
   timeline.stop();     
   } 
}