//Copyright 2005 Nokia Corporation.
//
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package satsa;

import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.TextField;

// Shows a password field used to decrypt a message
class PasswordScreen
  extends Form
  implements CommandListener
{
  private final SATSAMIDlet midlet;
  private final Command commandBack =
    new Command("Back", Command.BACK, 1);
  private final Command commandDecrypt =
    new Command("Decrypt", Command.ITEM, 1);
  private int index;
  TextField passwordField;

  PasswordScreen(SATSAMIDlet midlet)
  {
    super(null);
    this.midlet = midlet;
    createForm();
  }
  
  public void commandAction(Command c, Displayable d)
  {
    if (c==commandBack)
    {
      midlet.showEncryptedMessage(index);
    }
    if (c==commandDecrypt)
    {
      midlet.showDecryptedMessage(index,
          passwordField.getString());
    }
  }

  void setIndex(int index)
  {
    this.index = index;
    createForm();
  }

  private void createForm()
  {
    deleteAll();
    setTitle("Enter password to decrypt.");
    passwordField = new TextField("Password",
        "",
        16,
        TextField.PASSWORD);
    append(passwordField);
    addCommand(commandBack);
    addCommand(commandDecrypt);
    setCommandListener(this);
  }

}