AnimationTimer.java

package nodebox.client;

import javax.swing.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

public class AnimationTimer implements ActionListener {

    private NodeBoxDocument document;
    private Timer timer;

    public AnimationTimer(NodeBoxDocument document) {
        this.document = document;
        timer = new Timer(1000 / 60, this);
    }

    public void start() {
        timer.start();
    }

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

    public void actionPerformed(ActionEvent e) {
        // Timer has fired.
        document.nextFrame();
    }
}