import java.awt.*;
import javax.swing.*;
import java.rmi.server.*;
import java.rmi.*;
import java.util.*;
import java.awt.event.*;

class Client extends JFrame implements Runnable{
	RemoteServer remoteServer = null;
	int xLim = 500, yLim = 500, rMax = 70;
	public Client(String host){
		super();
		setSize(xLim, yLim);
		this.addKeyListener(new KeyListener());
		show();
		String url = "rmi://" + host + "/";
		try{
			remoteServer = (RemoteServer)Naming.lookup(url + "server");
		}catch(Exception e){
		}
	}
	public void run(){
		Graphics g = getGraphics();
		Vector ballsRaw = null;
		try {
			 ballsRaw = remoteServer.getBalls();
		}catch(RemoteException re){
			System.out.println("Exception generated: " + re.getMessage());
		}
		for(int i = 0; i < ballsRaw.size(); i = i + 3) {
			int x = (Integer)ballsRaw.elementAt(i);
			int y = (Integer)ballsRaw.elementAt(i + 1);
			int r = (Integer)ballsRaw.elementAt(i + 2);
			int blue = r * 255 / rMax; if(blue > 255) blue = 255; if(blue < 0) blue = 0;
			g.setColor(new Color(0, 0, blue));
			g.fillOval(x, y, r, r);
		}
		while(true) {
			// Hämtar först till en tmp-vektor för att slippa blinkandet
			Vector ballsRawTmp = null;
			try {
				ballsRawTmp = remoteServer.getBalls();
			} catch(RemoteException re) {
				System.out.println("Exception generated: " + re.getMessage());
			}

			// Sudda de tidigare bollarna
			g.setColor(getBackground());
			for(int i = 0; i < ballsRaw.size(); i = i + 3) {
				int x = (Integer)ballsRaw.elementAt(i);
				int y = (Integer)ballsRaw.elementAt(i + 1);
				int r = (Integer)ballsRaw.elementAt(i + 2);
				g.fillOval(x, y, r, r);
			}

			// Rita de nya bollarna
			ballsRaw = ballsRawTmp;
			for(int i = 0; i < ballsRaw.size(); i = i + 3) {
				int x = (Integer)ballsRaw.elementAt(i);
				int y = (Integer)ballsRaw.elementAt(i + 1);
				int r = (Integer)ballsRaw.elementAt(i + 2);

				int blue = r * 255 / rMax; if(blue > 255) blue = 255; if(blue < 0) blue = 0;
				g.setColor(new Color(0, 0, blue));
				g.fillOval(x, y, r, r);
			}
			setTitle("Antal bollar: " + ballsRaw.size() / 3);
			try { 
					Thread.sleep(50); 
			}catch(Exception e){
			}
		}
	}
	class KeyListener extends KeyAdapter{
		public void keyPressed(KeyEvent e){ 
			if (e.getKeyCode() == e.VK_O){
				try{
					remoteServer.addBall();
				}catch(RemoteException re){}
			}else if (e.getKeyCode() == e.VK_P){
				try{
					remoteServer.pauseBalls();
				}catch(RemoteException re){}
			}
		}
	}
	
	public static void main(String[] args){
		Client cl = new Client(args[0]);
		new Thread(cl).start();
	}
}