/*作者：吳拓 Email:setsail_wu@163.com
 */
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.net.*;
import java.util.Hashtable;
import java.util.Enumeration;
import java.util.StringTokenizer;

import javax.swing.JSplitPane;

public class MainWindow extends Frame implements Runnable{

	/*========== Constant Value ==========*/
	public static final long IPMSG_COMMASK		= 0x000000ffL;
	public static final long IPMSG_OPTMASK		= 0xffffff00L;
	
	public static final long IPMSG_NOOPERATION	= 0x00000000L;
	
	public static final long IPMSG_BR_ENTRY		= 0x00000001L;
	public static final long IPMSG_BR_EXIT		= 0x00000002L;
	public static final long IPMSG_ANSENTRY		= 0x00000003L;
	public static final long IPMSG_BR_ABSENCE	= 0x00000004L;
	
	public static final long IPMSG_BR_ISGETLIST = 0x00000018L;
	public static final long IPMSG_OKGETLIST	= 0x00000015L;
	public static final long IPMSG_GETLIST		= 0x00000016L;
	public static final long IPMSG_ANSLIST		= 0x00000017L;
	
	public static final long IPMSG_SENDMSG		= 0x00000020L;
	public static final long IPMSG_RECVMSG		= 0x00000021L;
	
	public static final long IPMSG_READMSG		= 0x00000030L;
	public static final long IPMSG_DELMSG		= 0x00000031L;
	
	public static final long IPMSG_GETINFO		= 0x00000040L;
	public static final long IPMSG_SENDINFO		= 0x00000041L;
	
	public static final long IPMSG_GETPUBKEY	= 0x00000072L;
	public static final long IPMSG_ANSPUBKEY	= 0x00000073L;
	
	// other opt
	public static final long IPMSG_ABSENCEOPT		= 0x00000100L;
	public static final long IPMSG_SERVEROPT		= 0x00000200L;
	public static final long IPMSG_DIALUPOPT		= 0x00010000L;
	public static final long IPMSG_ENCRYPTOPT		= 0x00400000L;
	public static final long IPMSG_ENCRYPTOPTOLD	= 0x00800000L;
	
	// send opt
	public static final long IPMSG_SENDCHECKOPT = 0x00000100L;
	public static final long IPMSG_SECRETOPT	= 0x00000200L;
	public static final long IPMSG_BROADCASTOPT = 0x00000400L;
	public static final long IPMSG_MULTICASTOPT = 0x00000800L;
	public static final long IPMSG_NOPOPUPOPT	= 0x00001000L;
	public static final long IPMSG_AUTORETOPT	= 0x00002000L;
	public static final long IPMSG_RETRYOPT		= 0x00004000L;
	public static final long IPMSG_PASSWORDOPT	= 0x00008000L;
	public static final long IPMSG_NOLOGOPT		= 0x00020000L;
	public static final long IPMSG_NEWMUTIOPT	= 0x00040000L;

	// encrypt opt
	public static final long IPMSG_RSA_512		= 0x00000001L;
	public static final long IPMSG_RSA_1024		= 0x00000002L;
	public static final long IPMSG_RSA_2048		= 0x00000004L;
	public static final long IPMSG_RC2_40		= 0x00001000L;
	public static final long IPMSG_RC2_128		= 0x00004000L;
	public static final long IPMSG_RC2_256		= 0x00008000L;
	public static final long IPMSG_BLOWFISH_128 = 0x00020000L;
	public static final long IPMSG_BLOWFISH_256 = 0x00040000L;
	
	public static final int	 MAXBUF				= 1024;
	/*========== end ==========*/
	
	
	public List memberlist;
	public Button refresh, send;
	public Label inlineNumberLabel;
	public TextArea editTextArea;
	private DatagramSocket UdpMsgds = null;
	public Thread refreshList = null;
	public Hashtable hashtable = new Hashtable();
	public MessengePack msgpack;
	public UdpMsgRecv udpmsgrecvThread;
	public int inlinenumber = 0;
	public InetAddress hostip;
	public MainWindow() {

		createWindow();		
		//定時接收信息
		try{
			UdpMsgds = new DatagramSocket(null);
			UdpMsgds.bind(new InetSocketAddress(2425));
		}catch(SocketException e){
			System.out.println("bind error" + e);
		}
			udpmsgrecvThread = new UdpMsgRecv(UdpMsgds);
			udpmsgrecvThread.start();	
		
		//定時刷新局域網內用戶列表
		refreshList = new Thread(this);
		refreshList.start();
		
	}
	
	public void createWindow(){
		setTitle("JavaIPM 0.1");
		setLayout(new BorderLayout());
		addWindowListener(new WindowAdapter() {
			public void windowClosing(WindowEvent we) {
				udpmsgrecvThread.broadcast(0x00000002L);//離線廣播。	
				System.exit(0);
			}
		});	
		Panel p1 = new Panel(new BorderLayout());
		memberlist = new List(8, true);
		memberlist.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				//sendAction();
			}
		});
		p1.add("Center", memberlist);
		p1.add("North", new Label("用戶名   主機名   IP地址"));
		Panel p2 = new Panel(new GridLayout(6,0));
		p2.add(new Label());
		p2.add(new Label());
		p2.add(new Label("    在線用戶  "));
		inlineNumberLabel = new Label("           0");
		p2.add(inlineNumberLabel);
		refresh = new Button();
		refresh.setLabel("刷新");
		refresh.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				memberlist.removeAll();
				udpmsgrecvThread.hashtable.clear();
				inlinenumber = 0;
				udpmsgrecvThread.broadcast(0x00000001L);//上線廣播。	
				refreshAction();
			}
		});
		p2.add(refresh);
		//p2.setSize(100,50);
		p1.add("East", p2);

		editTextArea = new TextArea("", 5, 40);
		Panel p3 = new Panel(new GridLayout(0,5));
		p3.add(new Label());
		send = new Button();
		send.setLabel("發送");
		send.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				sendAction();
			}
		});
		p3.add(send);
		Panel Psouth = new Panel (new BorderLayout());
		Psouth.add("Center", editTextArea);
		Psouth.add("South", p3);
		

		JSplitPane split;
		split = new JSplitPane(JSplitPane.VERTICAL_SPLIT, p1, Psouth);
		add(split,BorderLayout.CENTER);
		

		setLocation(200, 200);
		setSize(350, 300);

		setIconImage(getToolkit().getImage(
			getClass().getResource("images/ipmsg.gif")));
		
	}
	
	public void sendAction() {
		String slectmember[] = memberlist.getSelectedItems();
		String ipString;
		System.out.println(slectmember.length);
		
		for( int i = 0; i < slectmember.length; i++){
			StringTokenizer tokenizer = new StringTokenizer(slectmember[i], "/", false);
			tokenizer.nextToken();
			ipString = tokenizer.nextToken();
			try{
				hostip = hostip.getByName(ipString);
			}catch(Exception e){
				System.out.println("MainWindows.java:sendAction:error:" + e );
			}
			udpmsgrecvThread.mysend(IPMSG_SENDMSG, editTextArea.getText(), hostip);
		}

	}
	
	public void refreshAction() {
		memberlist.removeAll();
		hashtable = udpmsgrecvThread.gethashtable();	
		inlineNumberLabel.setText("        " + hashtable.size());
		for (Enumeration e = hashtable.elements() ; e.hasMoreElements() ;) {
			msgpack = (MessengePack)e.nextElement();
			memberlist.add(msgpack.getUser() + "    " + msgpack.getHost()
					+ "    " +msgpack.gethostip());
		}
	}
	
	public void run(){		
		hashtable = udpmsgrecvThread.gethashtable();	
		while(true){	
			if(inlinenumber != hashtable.size()){
				this.refreshAction();
				inlinenumber = hashtable.size();
			}
			try{
				refreshList.sleep(1000);	     	
			}catch(InterruptedException e){
				System.out.println("MainWindow.java:refreshList.sleep(500):error:" + e);
			}
		}
	}

}