public Beale() 
{
    super();
    GridBagLayout gridBag=new GridBagLayout();
    setLayout(gridBag);
    GridBagConstraints c=new GridBagConstraints();
    sourceText=new JTextArea();
    sourceText.setLineWrap(true);
    sourcePane=new JScrollPane(sourceText);
    sourceText.getDocument().addDocumentListener(this);
    //keyText=new JEditorPane();
    //keyPane=new JScrollPane(keyText);
    cipherText=new JTextArea();
    cipherText.setLineWrap(true);
    cipherText.setEditable(false);
    cipherText.setDocument(new BealeDocument());
    cipherPane=new JScrollPane(cipherText);
    plainFile=new JButton("Plain File");
    plainFile.addActionListener(new ActionListener()
                                {
                                  public void actionPerformed(ActionEvent e)
                                    {
                                      getPlainFile();
                                    }
                                });
    plainLabel=new JLabel("Plain file");
    keyLabel=new JLabel("Choose key file");
    keyFile=new JButton("Key File");
    keyFile.addActionListener(new ActionListener()
                               {
                                 public void actionPerformed(ActionEvent e)
                                   {
                                     getKeyFile();
                                   }
                               });
    cipher=new JButton("Decrypt");
    cipher.addActionListener(new ActionListener()
                             {
                               public void actionPerformed(ActionEvent e)
                                 {
                                   getCipherFile();
                                 }
                             });
    cipherLabel=new JLabel("Encrypted file");
    c.weightx=0.0;
    c.fill = GridBagConstraints.NONE;
    gridBag.setConstraints(keyFile, c);
    add(keyFile);
    c.weightx=1.0;
    c.gridwidth = GridBagConstraints.REMAINDER; //end row
    c.fill = GridBagConstraints.HORIZONTAL;
    gridBag.setConstraints(keyLabel, c);
    add(keyLabel);
    c.weightx=0.0;
    c.gridwidth = 1;
    c.fill = GridBagConstraints.NONE;
    gridBag.setConstraints(plainFile, c);
    add(plainFile);
    c.weightx=1.0;
    c.gridwidth = GridBagConstraints.REMAINDER; //end row
    c.fill = GridBagConstraints.HORIZONTAL;
    gridBag.setConstraints(plainLabel, c);
    add(plainLabel);
    c.weightx=0.0;
    c.gridwidth = 1;
    c.fill = GridBagConstraints.NONE;
    gridBag.setConstraints(cipher, c);
    add(cipher);
    c.weightx=1.0;
    c.gridwidth = GridBagConstraints.REMAINDER; //end row
    c.fill = GridBagConstraints.HORIZONTAL;
    gridBag.setConstraints(cipherLabel, c);
    add(cipherLabel);
    c.gridwidth = 1;
    c.fill = GridBagConstraints.BOTH;
    c.weightx=1.0;
    c.weighty=1.0;
    gridBag.setConstraints(sourcePane, c);
    add(sourcePane);
    gridBag.setConstraints(cipherPane, c);
    add(cipherPane);
    //gridBag.setConstraints(keyPane, c);
    //add(keyPane);
    //setPreferredSize(new Dimension(600,300));
}

 public  void changedUpdate(DocumentEvent e) 
{
    return;
}

 protected synchronized  void getCipherFile() 
{
    File file=getFile();
    if(file == null)
    {
      return;
    }
    cipherLabel.setText(file.getName());
    try
    {
      BufferedReader bin=new BufferedReader(new FileReader(file));
      String lin=bin.readLine();
      while(lin != null)
      {
        StringTokenizer tz=new StringTokenizer(lin, ",- \t");
        StringBuffer bif=new StringBuffer();
        while(tz.hasMoreTokens())
        {
          String l=tz.nextToken();
          int i=Integer.parseInt(l);
          if(i >0)
          {
            bif.append(letterIndex.decryptNum(i));
          }
          else
          {
            bif.append(' ");
          }
        }
        sourceText.append(bif.toString());
        lin=bin.readLine();
      }
      bin.close();
    }
    catch(IOException e)
    {
      e.printStackTrace(System.err);
      JOptionPane.showMessageDialog(this,
                                    e,
                                    "File Open Error",
                                    JOptionPane.ERROR_MESSAGE);
    }
    return;
}

 protected synchronized File getFile() 
{
    if(keyChooser == null)
    {
      keyChooser=new JFileChooser();
    }
    int ret=keyChooser.showOpenDialog(this);
    if(ret == JFileChooser.APPROVE_OPTION)
    {
      File file=keyChooser.getSelectedFile();
      return file;
    }
    return null;
}

 protected synchronized  void getKeyFile() 
{
    File file=getFile();
    if(file == null)
    {
      return;
    }
    keyLabel.setText(file.getName());
    try
    {
      BufferedReader bin=new BufferedReader(new FileReader(file));
      //keyText.setText("");
      String lin=bin.readLine();
      letterIndex=new BookTable();
      while(lin != null)
      {
        java.text.BreakIterator boundary=java.text.BreakIterator.getWordInstance();
        boundary.setText(lin);
        int start = boundary.first();
        for (int end = boundary.next();
             end != java.text.BreakIterator.DONE;
             start = end, end = boundary.next())
        {
          //System.err.println(lin.substring(start,end));
          letterIndex.addWord(lin.substring(start,end));
        }
        lin=bin.readLine();
      }
      bin.close();
    }
    catch(IOException e)
    {
      e.printStackTrace(System.err);
      JOptionPane.showMessageDialog(this,
                                    e,
                                    "File Open Error",
                                    JOptionPane.ERROR_MESSAGE);
    }
}

 protected synchronized  void getPlainFile() 
{
    File file=getFile();
    if(file == null)
    {
      return;
    }
    plainLabel.setText(file.getName());
    try
    {
      BufferedReader bin=new BufferedReader(new FileReader(file));
      String lin=bin.readLine();
      while(lin != null)
      {
        sourceText.append(lin);
        lin=bin.readLine();
      }
      bin.close();
    }
    catch(IOException e)
    {
      e.printStackTrace(System.err);
      JOptionPane.showMessageDialog(this,
                                    e,
                                    "File Open Error",
                                    JOptionPane.ERROR_MESSAGE);
    }
    return;
}

 public  void insertUpdate(DocumentEvent e) 
{
    try
    {
      cipherText.getDocument().insertString(e.getOffset(),
                                            sourceText.getDocument()
                                            .getText(e.getOffset(),
                                                     e.getLength()),
                                            null);
    }
    catch(Exception f)
    {
      f.printStackTrace(System.err);
    }
    return;
}

 public static  void main(String[] argv) 
{
    JFrame tFrame=new JFrame("Bealer Encipherer");
    JPanel tp=new Beale();
    tFrame.getContentPane().add("Center",tp);
    tFrame.addWindowListener(new WindowAdapter()
                             {
                               public void windowClosing(WindowEvent e)
                                 {
                                   System.exit(0);
                                 }
                             });
    tFrame.pack();
    tFrame.show();
}

 public  void removeUpdate(DocumentEvent e) 
{
    try
    {
      cipherText.getDocument().remove(e.getOffset(),
                                      e.getLength());
    }
    catch(Exception f)
    {
      f.printStackTrace(System.err);
    }
    return;
}