package mil.navy.nps.logger;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;


/**
 * Modal dialog box used to get user input for various networking
 * parameters, such as multicast group, port, and ttl.<p>
 *
 * This is called from a menu item in the main window.<p>

 * @author DMcG
 */

public class NetworkDialog extends JDialog 
{
  public static final int CANCEL = 0;
  public static final int OK     = 1;

  private JFrame        parentFrame;
  private JPanel        left, right, buttons, drawArea;
  protected TextField		ipaddress;
	protected TextField		portNumber;
  protected JComboBox   ttl;
  
  // did user hit OK or cancel?
  protected int         result = CANCEL;




/**
 * Constructor, set up GUI layout
 */

public NetworkDialog(JFrame pParentFrame, String pMcastAddress, int pPort, int pTTL)
{
  super(pParentFrame, true);    // superclass, sets us up as modal

  JButton ok, cancel;

  this.setSize(200, 200);
  parentFrame = pParentFrame;

  ipaddress       = new TextField(25);     // IP/mcast address to listen on
  portNumber      = new TextField(20);     // Port to listen on
  ttl             = new JComboBox();       // Combo box for ttl

  // combo box entries
  ttl.setEditable(false);
  ttl.addItem("     Local (ttl=1)");
  ttl.addItem("     Campus (ttl=16)");
  ttl.addItem("     Regional (ttl=32)");
  ttl.addItem("     World (ttl=64)");

  // some knob-twiddling
  this.setTitle("Networking Parameters");
  this.setSize(300, 150);
  this.setDefaultCloseOperation(DISPOSE_ON_CLOSE); // saves us from having to write an event handler

  drawArea = new JPanel();
	drawArea.setLayout(new BorderLayout() );

  left = new JPanel();
  left.setLayout(new GridLayout(3,1));
	left.add(new Label("Multicast address"));
	left.add(new Label("Multicast port"));
	left.add(new Label("Scope"));

	drawArea.add("West", left);

  right = new JPanel();

  // Set up the right panel.
  right.setLayout(new GridLayout(3,1));
	right.add(ipaddress);
	ipaddress.setText(pMcastAddress);
	right.add(portNumber);
	portNumber.setText((new Integer(pPort)).toString());
  
  // Pick the right values for ttl
  if(pTTL <= 1)
    ttl.setSelectedIndex(0);
  else if (pTTL <=16)
    ttl.setSelectedIndex(1);
  else if (pTTL <= 32)
    ttl.setSelectedIndex(2);
  else if(pTTL >= 64)
    ttl.setSelectedIndex(3);

	right.add(ttl);

  drawArea.add("East", right);

  buttons = new JPanel();

  ok = new JButton("OK");
  ok.addActionListener(new ActionListener()
  {
    public void actionPerformed(ActionEvent e)
    {
      WindowEvent we;

      result = OK;
      we = new WindowEvent(NetworkDialog.this, WindowEvent.WINDOW_CLOSING);
      NetworkDialog.this.processWindowEvent(we);
    }
  });

  cancel = new JButton("Cancel");
  cancel.addActionListener(new ActionListener()
  {
    public void actionPerformed(ActionEvent e)
    {
     WindowEvent we;

      result = CANCEL;
      we = new WindowEvent(NetworkDialog.this, WindowEvent.WINDOW_CLOSING);
      NetworkDialog.this.processWindowEvent(we);
    }
  });


  buttons.add(ok);
  buttons.add(cancel);

  drawArea.add("South", buttons);

  this.getContentPane().add(drawArea);
}

/**
 * Returns what the user did after the dialog exits, OK
 * or cancel.
 */

public int getResult()
{ return result;
}

public String getMulticastAddress()
{ return ipaddress.getText();
}

/**
 * Returns the port number selected by the user
 */

public int getPort()
{
  int port = -1;

  try
  {
    port = Integer.parseInt(portNumber.getText());
  }
  catch(NumberFormatException nfe)
  {
    System.out.println(nfe);
  }

  return port;
}

/**
 * Returns the ttl number selected by the user
 */

public int getTTL()
{
  int ttlNo = 1;
  String selectedScope = (String)ttl.getSelectedItem();

  if(selectedScope.compareToIgnoreCase("Local") == 0)
    ttlNo = 1;

  if(selectedScope.compareToIgnoreCase("Campus") == 0)
    ttlNo = 16;

  if(selectedScope.compareToIgnoreCase("Regional") == 0)
    ttlNo = 32;

  if(selectedScope.compareToIgnoreCase("World") == 0)
    ttlNo = 64;

  return ttlNo;
}

}