package diagapplet.utils;

import java.awt.Panel;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Color;

/*
 *
 * URLLoadInfoPanel
 *
 */
public class URLLoadInfoPanel extends Panel
{
	public boolean use_color = true;
	long last_repaint_time = 0;
	static final long MIN_REPAINT_TIME = 500;
	public String URLname = null;
	public int content_length = -1;
	public int bytes_read = 0;
	Dimension prefDim = null;
		
	public URLLoadInfoPanel()
	{
		super();
		URLname = "";
		content_length = -1;
		bytes_read = 0;
		if(null == prefDim)
		{
			prefDim =new Dimension(420,40);
		}
	}
		
	public URLLoadInfoPanel(int pref_width, int pref_height)
	{
		this();
		prefDim =new Dimension(pref_width,pref_height);
	}

	public Dimension preferredSize()
    {
      return prefDim;	
	}

	public void updateDisplay()
	{
		if(System.currentTimeMillis() - last_repaint_time > MIN_REPAINT_TIME)
		{
			repaint();
		}
	}
	public void paint(Graphics g)
    {
		last_repaint_time = System.currentTimeMillis();
		String str = URLname + " ( "+bytes_read+" out of "+content_length+" )";
		g.drawString(str,10,20);
		g.drawRect(10,24,prefDim.width - 18,11);
		if(content_length > 0 )
		{
			if(bytes_read > 0)
			{
				if(bytes_read < content_length)
				{
					if(use_color)
					{
						g.setColor(Color.blue);
					}
					else
					{
						g.setColor(Color.black);
					}
					int percent_done = ((prefDim.width - 20)*bytes_read)/content_length;
					g.fillRect(11,25,percent_done,9);
				}
				else if(bytes_read == content_length)
				{
					if(use_color)
					{
						g.setColor(Color.green);
					}
					else
					{
						g.setColor(Color.black);
					}
					g.fillRect(11,25,prefDim.width - 20,9);
				}
			}
		}
	}	
}