encryptscreen.java

Mobile Phone JSR 177 midlet example

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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.StringItem;

// Screen used to display a decrypted message
class EncryptScreen
  extends Form
  implements CommandListener
{

  private final SATSAMIDlet midlet;
  private final Command commandBack =
    new Command("Back", Command.BACK, 1);
  private final Command commandShowDecrypted =
    new Command("Decrypt", Command.ITEM, 1);
  private int index;
  private String encryptedMessage;

  EncryptScreen(SATSAMIDlet midlet)
  {
    super(null);
    this.midlet = midlet;
    createForm();
  }
  
  public void commandAction(Command c, Displayable d)
  {
    if (c==commandBack)
    {
      midlet.showMessageList();
    }
    if (c==commandShowDecrypted)
    {
      midlet.showPasswordScreen(index);
    }
  }

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

  void setMessage(String encryptedMessage)
  {
    this.encryptedMessage = encryptedMessage;
    createForm();
  }

  private void createForm()
  {
    deleteAll();
    setTitle("Encrypted Message ");
    StringItem messageItem = new StringItem(null, encryptedMessage);
    append(messageItem);
    addCommand(commandBack);
    addCommand(commandShowDecrypted);
    setCommandListener(this);
  }
}