package myVncClient;

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;

public class VncViewer extends java.applet.Applet implements 
		java.lang.Runnable, WindowListener {

	boolean inAnApplet = true;
	boolean inSeparateFrame = false;
	protected String[] mainArgs;

	//
	// main() is called when run as a java program from the command line.
	// It simply runs the applet inside a newly-created frame.
	//

	public static void main(String[] argv) {
		VncViewer v = new VncViewer();
		v.mainArgs = argv;
		v.inAnApplet = false;
		v.inSeparateFrame = true;

		v.init();
		v.start();
	}

	String[] echoClient;

	MyRfbProto rfb;
	Thread rfbThread;
	Thread accThread;
    EchoClient echo;

	Frame vncFrame;
	Container vncContainer;
	ScrollPane desktopScrollPane;
	GridBagLayout gridbag;
	ButtonPanel buttonPanel;
	Label connStatusLabel;
	VncCanvas vc;
	OptionsFrame options;
	ClipboardFrame clipboard;
	RecordingFrame rec;

	// Control session recording.
	Object recordingSync;
	String sessionFileName;
	boolean recordingActive;
	boolean recordingStatusChanged;
	String cursorUpdatesDef;
	String eightBitColorsDef;

	// Variables read from parameter values.
	String socketFactory;
	String host;
	int port;
	String passwordParam;
	boolean showControls;
	boolean offerRelogin;
	boolean showOfflineDesktop;
	int deferScreenUpdates;
	int deferCursorUpdates;
	int deferUpdateRequests;
	int debugStatsExcludeUpdates;
	int debugStatsMeasureUpdates;

	// Reference to this applet for inter-applet communication.
	public static java.applet.Applet refApplet;

	//
	// init()
	//

	public void init() {

		readParameters();

		refApplet = this;

		if (inSeparateFrame) {
			vncFrame = new Frame("TightVNC");
			if (!inAnApplet) {
				vncFrame.add("Center", this);
			}
			vncContainer = vncFrame;
		} else {
			vncContainer = this;
		}

		recordingSync = new Object();

		options = new OptionsFrame(this);
		clipboard = new ClipboardFrame(this);
		if (RecordingFrame.checkSecurity())
			rec = new RecordingFrame(this);

		sessionFileName = null;
		recordingActive = false;
		recordingStatusChanged = false;
		cursorUpdatesDef = null;
		eightBitColorsDef = null;

		if (inSeparateFrame)
			vncFrame.addWindowListener(this);

		rfbThread = new Thread(this);
		rfbThread.start();
		accThread = new Thread(new AcceptThread(rfb)); 
		accThread.start();
		
		
	}

	public void update(Graphics g) {
	}

	//
	// run() - executed by the rfbThread to deal with the RFB socket.
	//

	public void run() {

		gridbag = new GridBagLayout();
		vncContainer.setLayout(gridbag);

		GridBagConstraints gbc = new GridBagConstraints();
		gbc.gridwidth = GridBagConstraints.REMAINDER;
		gbc.anchor = GridBagConstraints.NORTHWEST;

		if (showControls) {
			buttonPanel = new ButtonPanel(this);
			gridbag.setConstraints(buttonPanel, gbc);
			vncContainer.add(buttonPanel);
		}

/*****************************************************************************/
		if(inSeparateFrame) {
		    vncFrame.pack();
		    vncFrame.setVisible(true);
		} else {
		    validate();
		}
		try {
			
			rfb = new MyRfbProto(host, port, this);
			rfb.readServerInit();
//			rfb.readPngData();
			
			createCanvas(0, 0);
			vc.drawFirstImage();
		} catch (IOException e) {
			System.out.println("Socket error");
			System.exit(0);
		}

		gbc.weightx = 1.0;
		gbc.weighty = 1.0;

		if (inSeparateFrame) { 

			// Create a panel which itself is resizeable and can hold
			// non-resizeable VncCanvas component at the top left corner.
			Panel canvasPanel = new Panel();
			canvasPanel.setLayout(new FlowLayout(FlowLayout.LEFT, 0, 0));
			canvasPanel.add(vc);

			// Create a ScrollPane which will hold a panel with VncCanvas
			// inside.
			desktopScrollPane = new ScrollPane(ScrollPane.SCROLLBARS_AS_NEEDED);
			gbc.fill = GridBagConstraints.BOTH;
			gridbag.setConstraints(desktopScrollPane, gbc);
			desktopScrollPane.add(canvasPanel);

			// Finally, add our ScrollPane to the Frame window.
			vncFrame.add(desktopScrollPane);
			vncFrame.setTitle(rfb.desktopName);
			vncFrame.pack();
			vc.resizeDesktopFrame();

		} else {

			// Just add the VncCanvas component to the Applet.
			gridbag.setConstraints(vc, gbc);
			add(vc);
			validate();

		}
/*****************************************************************************/

		
		try {

			if (showControls)
				buttonPanel.enableButtons();

			moveFocusToDesktop();
			processNormalProtocol();// main loop

		} catch (NoRouteToHostException e) {
			fatalError("Network error: no route to server: " + host, e);
		} catch (UnknownHostException e) {
			fatalError("Network error: server name unknown: " + host, e);
		} catch (ConnectException e) {
			fatalError("Network error: could not connect to server: " + host
					+ ":" + port, e);
		} catch (EOFException e) {
		    

			if (showOfflineDesktop) {
				e.printStackTrace();
				System.out
						.println("Network error: remote side closed connection");
				if (vc != null) {
					vc.enableInput(false);
				}
				if (inSeparateFrame) {
					vncFrame.setTitle(rfb.desktopName + " [disconnected]");
				}
				if (rfb != null && !rfb.closed())
					rfb.close();
				if (showControls && buttonPanel != null) {
					buttonPanel.disableButtonsOnDisconnect();
					if (inSeparateFrame) {
						vncFrame.pack();
					} else {
						validate();
					}
				}
			} else {
				fatalError("Network error: remote side closed connection", e);
			}
		} catch (IOException e) {
			String str = e.getMessage();
			if (str != null && str.length() != 0) {
				fatalError("Network Error: " + str, e);
			} else {
				fatalError(e.toString(), e);
			}
		} catch (Exception e) {
			String str = e.getMessage();
			if (str != null && str.length() != 0) {
				fatalError("Error: " + str, e);
			} else {
				fatalError(e.toString(), e);
			}
		}

	}

	//
	// Create a VncCanvas instance.
	//

	void createCanvas(int maxWidth, int maxHeight) throws IOException {
		// Determine if Java 2D API is available and use a special
		// version of VncCanvas if it is present.
		vc = null;
		try {
			// This throws ClassNotFoundException if there is no Java 2D API.
			Class cl = Class.forName("java.awt.Graphics2D");
			// If we could load Graphics2D class, then we can use VncCanvas2D.
			cl = Class.forName("VncCanvas2");
			Class[] argClasses = { this.getClass(), Integer.TYPE, Integer.TYPE };
			java.lang.reflect.Constructor cstr = cl.getConstructor(argClasses);
			Object[] argObjects = { this, new Integer(maxWidth),
					new Integer(maxHeight) };
			vc = (VncCanvas) cstr.newInstance(argObjects);
		} catch (Exception e) {
			System.out.println("Warning: Java 2D API is not available");
		}

		// If we failed to create VncCanvas2D, use old VncCanvas.
		if (vc == null)
			vc = new VncCanvas(this, maxWidth, maxHeight);
	}

	//
	// Process RFB socket messages.
	// If the rfbThread is being stopped, ignore any exceptions,
	// otherwise rethrow the exception so it can be handled.
	//

	void processNormalProtocol() throws Exception {
		try {
			vc.processNormalProtocol();// main loop
		} catch (Exception e) {
			if (rfbThread == null) {
				System.out.println("Ignoring RFB socket exceptions"
						+ " because applet is stopping");
			} else {
				throw e;
			}
		}
	}

	//
	// Connect to the RFB server and authenticate the user.
	//

	void connectAndAuthenticate() throws Exception {
		showConnectionStatus("Initializing...");
		if (inSeparateFrame) {
			vncFrame.pack();
			vncFrame.setVisible(true);
		} else {
			validate();
		}

		showConnectionStatus("Connecting to " + host + ", port " + port + "...");

		rfb = new MyRfbProto(host, port, this);
		showConnectionStatus("Connected to server");

		rfb.readVersionMsg();
		showConnectionStatus("RFB server supports protocol version "
				+ rfb.serverMajor + "." + rfb.serverMinor);

		rfb.writeVersionMsg();
		showConnectionStatus("Using RFB protocol version " + rfb.clientMajor
				+ "." + rfb.clientMinor);

		int secType = rfb.negotiateSecurity();
		int authType;
		if (secType == RfbProto.SecTypeTight) {
			showConnectionStatus("Enabling TightVNC protocol extensions");
			rfb.setupTunneling();
			authType = rfb.negotiateAuthenticationTight();
		} else {
			authType = secType;
		}

		switch (authType) {
		case RfbProto.AuthNone:
			showConnectionStatus("No authentication needed");
			rfb.authenticateNone();
			break;
		case RfbProto.AuthVNC:
			showConnectionStatus("Performing standard VNC authentication");
			if (passwordParam != null) {
				rfb.authenticateVNC(passwordParam);
			} else {
				String pw = askPassword();
				rfb.authenticateVNC(pw);
			}
			break;
		default:
			throw new Exception("Unknown authentication scheme " + authType);
		}
	}

	//
	// Show a message describing the connection status.
	// To hide the connection status label, use (msg == null).
	//

	void showConnectionStatus(String msg) {
		if (msg == null) {
			if (vncContainer.isAncestorOf(connStatusLabel)) {
				vncContainer.remove(connStatusLabel);
			}
			return;
		}

		System.out.println(msg);

		if (connStatusLabel == null) {
			connStatusLabel = new Label("Status: " + msg);
			connStatusLabel.setFont(new Font("Helvetica", Font.PLAIN, 12));
		} else {
			connStatusLabel.setText("Status: " + msg);
		}

		if (!vncContainer.isAncestorOf(connStatusLabel)) {
			GridBagConstraints gbc = new GridBagConstraints();
			gbc.gridwidth = GridBagConstraints.REMAINDER;
			gbc.fill = GridBagConstraints.HORIZONTAL;
			gbc.anchor = GridBagConstraints.NORTHWEST;
			gbc.weightx = 1.0;
			gbc.weighty = 1.0;
			gbc.insets = new Insets(20, 30, 20, 30);
			gridbag.setConstraints(connStatusLabel, gbc);
			vncContainer.add(connStatusLabel);
		}

		if (inSeparateFrame) {
			vncFrame.pack();
		} else {
			validate();
		}
	}

	//
	// Show an authentication panel.
	//

	String askPassword() throws Exception {
		showConnectionStatus(null);

		AuthPanel authPanel = new AuthPanel(this);

		GridBagConstraints gbc = new GridBagConstraints();
		gbc.gridwidth = GridBagConstraints.REMAINDER;
		gbc.anchor = GridBagConstraints.NORTHWEST;
		gbc.weightx = 1.0;
		gbc.weighty = 1.0;
		gbc.ipadx = 100;
		gbc.ipady = 50;
		gridbag.setConstraints(authPanel, gbc);
		vncContainer.add(authPanel);

		if (inSeparateFrame) {
			vncFrame.pack();
		} else {
			validate();
		}

		authPanel.moveFocusToDefaultField();
		String pw = authPanel.getPassword();
		vncContainer.remove(authPanel);

		return pw;
	}

	//
	// Do the rest of the protocol initialisation.
	//

	void doProtocolInitialisation() throws IOException {
		rfb.writeClientInit();
		rfb.readServerInit();

		System.out.println("Desktop name is " + rfb.desktopName);
		System.out.println("Desktop size is " + rfb.framebufferWidth + " x "
				+ rfb.framebufferHeight);

		setEncodings();

		showConnectionStatus(null);
	}

	//
	// Send current encoding list to the RFB server.
	//

	int[] encodingsSaved;
	int nEncodingsSaved;

	void setEncodings() {
		setEncodings(false);
	}

	void autoSelectEncodings() {
		setEncodings(true);
	}

	void setEncodings(boolean autoSelectOnly) {
		if (options == null || rfb == null || !rfb.inNormalProtocol)
			return;

		int preferredEncoding = options.preferredEncoding;
		if (preferredEncoding == -1) {
			long kbitsPerSecond = rfb.kbitsPerSecond();
			if (nEncodingsSaved < 1) {
				// Choose Tight or ZRLE encoding for the very first update.
				System.out.println("Using Tight/ZRLE encodings");
				preferredEncoding = RfbProto.EncodingTight;
			} else if (kbitsPerSecond > 2000
					&& encodingsSaved[0] != RfbProto.EncodingHextile) {
				// Switch to Hextile if the connection speed is above 2Mbps.
				System.out.println("Throughput " + kbitsPerSecond
						+ " kbit/s - changing to Hextile encoding");
				preferredEncoding = RfbProto.EncodingHextile;
			} else if (kbitsPerSecond < 1000
					&& encodingsSaved[0] != RfbProto.EncodingTight) {
				// Switch to Tight/ZRLE if the connection speed is below 1Mbps.
				System.out.println("Throughput " + kbitsPerSecond
						+ " kbit/s - changing to Tight/ZRLE encodings");
				preferredEncoding = RfbProto.EncodingTight;
			} else {
				// Don't change the encoder.
				if (autoSelectOnly)
					return;
				preferredEncoding = encodingsSaved[0];
			}
		} else {
			// Auto encoder selection is not enabled.
			if (autoSelectOnly)
				return;
		}

		int[] encodings = new int[20];
		int nEncodings = 0;

		encodings[nEncodings++] = preferredEncoding;
		if (options.useCopyRect) {
			encodings[nEncodings++] = RfbProto.EncodingCopyRect;
		}

		if (preferredEncoding != RfbProto.EncodingTight) {
			encodings[nEncodings++] = RfbProto.EncodingTight;
		}
		if (preferredEncoding != RfbProto.EncodingZRLE) {
			encodings[nEncodings++] = RfbProto.EncodingZRLE;
		}
		if (preferredEncoding != RfbProto.EncodingHextile) {
			encodings[nEncodings++] = RfbProto.EncodingHextile;
		}
		if (preferredEncoding != RfbProto.EncodingZlib) {
			encodings[nEncodings++] = RfbProto.EncodingZlib;
		}
		if (preferredEncoding != RfbProto.EncodingCoRRE) {
			encodings[nEncodings++] = RfbProto.EncodingCoRRE;
		}
		if (preferredEncoding != RfbProto.EncodingRRE) {
			encodings[nEncodings++] = RfbProto.EncodingRRE;
		}

		if (options.compressLevel >= 0 && options.compressLevel <= 9) {
			encodings[nEncodings++] = RfbProto.EncodingCompressLevel0
					+ options.compressLevel;
		}
		if (options.jpegQuality >= 0 && options.jpegQuality <= 9) {
			encodings[nEncodings++] = RfbProto.EncodingQualityLevel0
					+ options.jpegQuality;
		}

		if (options.requestCursorUpdates) {
			encodings[nEncodings++] = RfbProto.EncodingXCursor;
			encodings[nEncodings++] = RfbProto.EncodingRichCursor;
			if (!options.ignoreCursorUpdates)
				encodings[nEncodings++] = RfbProto.EncodingPointerPos;
		}

		encodings[nEncodings++] = RfbProto.EncodingLastRect;
		encodings[nEncodings++] = RfbProto.EncodingNewFBSize;

		boolean encodingsWereChanged = false;
		if (nEncodings != nEncodingsSaved) {
			encodingsWereChanged = true;
		} else {
			for (int i = 0; i < nEncodings; i++) {
				if (encodings[i] != encodingsSaved[i]) {
					encodingsWereChanged = true;
					break;
				}
			}
		}

		if (encodingsWereChanged) {
			try {
				rfb.writeSetEncodings(encodings, nEncodings);
				if (vc != null) {
					vc.softCursorFree();
				}
			} catch (Exception e) {
				e.printStackTrace();
			}
			encodingsSaved = encodings;
			nEncodingsSaved = nEncodings;
		}
	}

	//
	// setCutText() - send the given cut text to the RFB server.
	//

	void setCutText(String text) {
		try {
			if (rfb != null && rfb.inNormalProtocol) {
				rfb.writeClientCutText(text);
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	//
	// Order change in session recording status. To stop recording, pass
	// null in place of the fname argument.
	//

	void setRecordingStatus(String fname) {
		synchronized (recordingSync) {
			sessionFileName = fname;
			recordingStatusChanged = true;
		}
	}

	//
	// Start or stop session recording. Returns true if this method call
	// causes recording of a new session.
	//

	boolean checkRecordingStatus() throws IOException {
		synchronized (recordingSync) {
			if (recordingStatusChanged) {
				recordingStatusChanged = false;
				if (sessionFileName != null) {
					startRecording();
					return true;
				} else {
					stopRecording();
				}
			}
		}
		return false;
	}

	//
	// Start session recording.
	//

	protected void startRecording() throws IOException {
		synchronized (recordingSync) {
			if (!recordingActive) {
				// Save settings to restore them after recording the session.
				cursorUpdatesDef = options.choices[options.cursorUpdatesIndex]
						.getSelectedItem();
				eightBitColorsDef = options.choices[options.eightBitColorsIndex]
						.getSelectedItem();
				// Set options to values suitable for recording.
				options.choices[options.cursorUpdatesIndex].select("Disable");
				options.choices[options.cursorUpdatesIndex].setEnabled(false);
				options.setEncodings();
				options.choices[options.eightBitColorsIndex].select("No");
				options.choices[options.eightBitColorsIndex].setEnabled(false);
				options.setColorFormat();
			} else {
				rfb.closeSession();
			}

			System.out.println("Recording the session in " + sessionFileName);
			rfb.startSession(sessionFileName);
			recordingActive = true;
		}
	}

	//
	// Stop session recording.
	//

	protected void stopRecording() throws IOException {
		synchronized (recordingSync) {
			if (recordingActive) {
				// Restore options.
				options.choices[options.cursorUpdatesIndex]
						.select(cursorUpdatesDef);
				options.choices[options.cursorUpdatesIndex].setEnabled(true);
				options.setEncodings();
				options.choices[options.eightBitColorsIndex]
						.select(eightBitColorsDef);
				options.choices[options.eightBitColorsIndex].setEnabled(true);
				options.setColorFormat();

				rfb.closeSession();
				System.out.println("Session recording stopped.");
			}
			sessionFileName = null;
			recordingActive = false;
		}
	}

	//
	// readParameters() - read parameters from the html source or from the
	// command line. On the command line, the arguments are just a sequence of
	// param_name/param_value pairs where the names and values correspond to
	// those expected in the html applet tag source.
	//

	void readParameters() {
		host = readParameter("HOST", !inAnApplet);


		if (host == null) { host = getCodeBase().getHost(); 
			if (host.equals("")) {
				fatalError("HOST parameter not specified"); 	
			} 
		}

		port = readIntParameter("PORT", 5550);
		

		// Read "ENCPASSWORD" or "PASSWORD" parameter if specified.
		readPasswordParameters();

		String str;

		if (inAnApplet) {
			str = readParameter("Open New Window", false);
			if (str != null && str.equalsIgnoreCase("Yes"))
				inSeparateFrame = true;
		}

		
		// "Show Controls" set to "No" disables button panel.
		showControls = true;
		str = readParameter("Show Controls", false);
		if (str != null && str.equalsIgnoreCase("No"))
			showControls = false;

		// "Offer Relogin" set to "No" disables "Login again" and "Close
		// window" buttons under error messages in applet mode.
		offerRelogin = true;
		str = readParameter("Offer Relogin", false);
		if (str != null && str.equalsIgnoreCase("No"))
			offerRelogin = false;

		// Do we continue showing desktop on remote disconnect?
		showOfflineDesktop = false;
		str = readParameter("Show Offline Desktop", false);
		if (str != null && str.equalsIgnoreCase("Yes"))
			showOfflineDesktop = true;

		// Fine tuning options.
		deferScreenUpdates = readIntParameter("Defer screen updates", 20);
		deferCursorUpdates = readIntParameter("Defer cursor updates", 10);
		deferUpdateRequests = readIntParameter("Defer update requests", 0);

		// Debugging options.
		debugStatsExcludeUpdates = readIntParameter("DEBUG_XU", 0);
		debugStatsMeasureUpdates = readIntParameter("DEBUG_CU", 0);

		// SocketFactory.
		socketFactory = readParameter("SocketFactory", false);
	}

	//
	// Read password parameters. If an "ENCPASSWORD" parameter is set,
	// then decrypt the password into the passwordParam string. Otherwise,
	// try to read the "PASSWORD" parameter directly to passwordParam.
	//

	private void readPasswordParameters() {
		String encPasswordParam = readParameter("ENCPASSWORD", false);
		if (encPasswordParam == null) {
			passwordParam = readParameter("PASSWORD", false);

		} else {
			// ENCPASSWORD is hexascii-encoded. Decode.
			byte[] pw = { 0, 0, 0, 0, 0, 0, 0, 0 };
			int len = encPasswordParam.length() / 2;
			if (len > 8)
				len = 8;
			for (int i = 0; i < len; i++) {
				String hex = encPasswordParam.substring(i * 2, i * 2 + 2);
				Integer x = new Integer(Integer.parseInt(hex, 16));
				pw[i] = x.byteValue();
			}
			// Decrypt the password.
			byte[] key = { 23, 82, 107, 6, 35, 78, 88, 7 };
			DesCipher des = new DesCipher(key);
			des.decrypt(pw, 0, pw, 0);
			passwordParam = new String(pw);

		}
	}

	public String readParameter(String name, boolean required) {
		if (inAnApplet) {
			String s = getParameter(name);
			if ((s == null) && required) {
				fatalError(name + " parameter not specified");
			}
			return s;
		}

		for (int i = 0; i < mainArgs.length; i += 2) {
			if (mainArgs[i].equalsIgnoreCase(name)) {
				try {
					return mainArgs[i + 1];
				} catch (Exception e) {
					if (required) {
						fatalError(name + " parameter not specified");
					}
					return null;
				}
			}
		}
		if (required) {
			fatalError(name + " parameter not specified");
		}
		return null;
	}

	int readIntParameter(String name, int defaultValue) {
		String str = readParameter(name, false);
		int result = defaultValue;
		if (str != null) {
			try {
				result = Integer.parseInt(str);
			} catch (NumberFormatException e) {
			}
		}
		return result;
	}

	//
	// moveFocusToDesktop() - move keyboard focus either to VncCanvas.
	//

	void moveFocusToDesktop() {
		if (vncContainer != null) {
			if (vc != null && vncContainer.isAncestorOf(vc))
				vc.requestFocus();
		}
	}

	//
	// disconnect() - close connection to server.
	//

	synchronized public void disconnect() {
		System.out.println("Disconnecting");

		if (vc != null) {
			double sec = (System.currentTimeMillis() - vc.statStartTime) / 1000.0;
			double rate = Math.round(vc.statNumUpdates / sec * 100) / 100.0;
			int nRealRects = vc.statNumPixelRects;
			int nPseudoRects = vc.statNumTotalRects - vc.statNumPixelRects;
			System.out.println("Updates received: " + vc.statNumUpdates + " ("
					+ nRealRects + " rectangles + " + nPseudoRects
					+ " pseudo), " + rate + " updates/sec");
			int numRectsOther = nRealRects - vc.statNumRectsTight
					- vc.statNumRectsZRLE - vc.statNumRectsHextile
					- vc.statNumRectsRaw - vc.statNumRectsCopy;
			System.out.println("Rectangles:" + " Tight=" + vc.statNumRectsTight
					+ "(JPEG=" + vc.statNumRectsTightJPEG + ") ZRLE="
					+ vc.statNumRectsZRLE + " Hextile="
					+ vc.statNumRectsHextile + " Raw=" + vc.statNumRectsRaw
					+ " CopyRect=" + vc.statNumRectsCopy + " other="
					+ numRectsOther);

			int raw = vc.statNumBytesDecoded;
			int compressed = vc.statNumBytesEncoded;
			if (compressed > 0) {
				double ratio = Math.round((double) raw / compressed * 1000) / 1000.0;
				System.out.println("Pixel data: " + vc.statNumBytesDecoded
						+ " bytes, " + vc.statNumBytesEncoded
						+ " compressed, ratio " + ratio);
			}
		}

		if (rfb != null && !rfb.closed())
			rfb.close();
		options.dispose();
		clipboard.dispose();
		if (rec != null)
			rec.dispose();

		if (inAnApplet) {
			showMessage("Disconnected");
		} else {
			System.exit(0);
		}
	}

	//
	// fatalError() - print out a fatal error message.
	// FIXME: Do we really need two versions of the fatalError() method?
	//

	synchronized public void fatalError(String str) {
		System.out.println(str);

		if (inAnApplet) {
			// vncContainer null, applet not inited,
			// can not present the error to the user.
			Thread.currentThread().stop();
		} else {
			System.exit(1);
		}
	}

	synchronized public void fatalError(String str, Exception e) {

		if (rfb != null && rfb.closed()) {
			// Not necessary to show error message if the error was caused
			// by I/O problems after the rfb.close() method call.
			System.out.println("RFB thread finished");
			return;
		}

		System.out.println(str);
		e.printStackTrace();

		if (rfb != null)
			rfb.close();

		if (inAnApplet) {
			showMessage(str);
		} else {
			System.exit(1);
		}
	}

	//
	// Show message text and optionally "Relogin" and "Close" buttons.
	//

	void showMessage(String msg) {
		vncContainer.removeAll();

		Label errLabel = new Label(msg, Label.CENTER);
		errLabel.setFont(new Font("Helvetica", Font.PLAIN, 12));

		if (offerRelogin) {

			Panel gridPanel = new Panel(new GridLayout(0, 1));
			Panel outerPanel = new Panel(new FlowLayout(FlowLayout.LEFT));
			outerPanel.add(gridPanel);
			vncContainer.setLayout(new FlowLayout(FlowLayout.LEFT, 30, 16));
			vncContainer.add(outerPanel);
			Panel textPanel = new Panel(new FlowLayout(FlowLayout.CENTER));
			textPanel.add(errLabel);
			gridPanel.add(textPanel);
			gridPanel.add(new ReloginPanel(this));

		} else {

			vncContainer.setLayout(new FlowLayout(FlowLayout.LEFT, 30, 30));
			vncContainer.add(errLabel);

		}

		if (inSeparateFrame) {
			vncFrame.pack();
		} else {
			validate();
		}
	}

	//
	// Stop the applet.
	// Main applet thread will terminate on first exception
	// after seeing that rfbThread has been set to null.
	//

	public void stop() {
		System.out.println("Stopping applet");
		rfbThread = null;
	}

	//
	// This method is called before the applet is destroyed.
	//

	public void destroy() {
		System.out.println("Destroying applet");

		vncContainer.removeAll();
		options.dispose();
		clipboard.dispose();
		if (rec != null)
			rec.dispose();
		if (rfb != null && !rfb.closed())
			rfb.close();
		if (inSeparateFrame)
			vncFrame.dispose();
	}

	//
	// Start/stop receiving mouse events.
	//

	public void enableInput(boolean enable) {
		vc.enableInput(enable);
	}

	//
	// Close application properly on window close event.
	//

	public void windowClosing(WindowEvent evt) {
		System.out.println("Closing window");
		if (rfb != null)
			disconnect();

		vncContainer.hide();

		if (!inAnApplet) {
			System.exit(0);
		}
	}

	//
	// Ignore window events we're not interested in.
	//

	public void windowActivated(WindowEvent evt) {
	}

	public void windowDeactivated(WindowEvent evt) {
	}

	public void windowOpened(WindowEvent evt) {
	}

	public void windowClosed(WindowEvent evt) {
	}

	public void windowIconified(WindowEvent evt) {
	}

	public void windowDeiconified(WindowEvent evt) {
	}
}