import java.awt.Color;
import java.awt.Graphics;

import javax.swing.JList;
import javax.swing.ListModel;

public class TimeLineJList extends JList<Music> {
	private static final long serialVersionUID = 1L;
	private static final int MARK_WIDTH = 2;
	
	private Interface interf;

	public TimeLineJList(ListModel<Music> dataModel, Interface interf) {
		super(dataModel);
		this.interf = interf;
	}
	
	@Override
	protected void paintComponent(Graphics g) {
		super.paintComponent(g);
		g.setColor(Color.BLACK);
		
		int maxHeight = getPreferredSize().height;
		int maxWidth = getPreferredSize().width;
		
		int mark = transformZoon(interf.tick);
		if(mark > maxWidth)
			mark = maxWidth;
		
		g.fillRect(mark, 0, MARK_WIDTH, maxHeight);
	}
	
	private int transformZoon(long n) {
		return (int) ((double) n / (double) PatternJPanel.ZOOM_MULTIPLIER * interf.timeLinePanel.getZoomLevel());
	}
}