sendscreen.java

J2ME MIDP_Example_Applications

// Copyright 2003 Nokia Corporation.
//
// THIS SOURCE CODE IS PROVIDED 'AS IS', WITH NO WARRANTIES WHATSOEVER,
// EXPRESS OR IMPLIED, INCLUDING ANY WARRANTY OF MERCHANTABILITY, FITNESS
// FOR ANY PARTICULAR PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE
// OR TRADE PRACTICE, RELATING TO THE SOURCE CODE OR ANY WARRANTY OTHERWISE
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// RIGHTS GRANTED HEREUNDER DOES NOT INFRINGE OR MAY NOT CAUSE INFRINGEMENT
// OF ANY PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OWNED OR CONTROLLED
// BY THIRD PARTIES
//
// Furthermore, information provided in this source code is preliminary,
// and may be changed substantially prior to final release. Nokia Corporation
// retains the right to make changes to this source code at
// any time, without notice. This source code is provided for informational
// purposes only.
//
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// Corporation.
// Java and all Java-based marks are trademarks or registered trademarks of
// Sun Microsystems, Inc.
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import java.io.*;
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import javax.wireless.messaging.*;

class SendScreen
  extends Form
  implements CommandListener
{
  private final Command sendCommand, exitCommand;
  private final TextField number, text, password;
  private final ChoiceGroup checksum;
  private final EncryptedSMSMIDlet parent;


  public SendScreen(EncryptedSMSMIDlet parent)
  {
    super("Send Secure SMS");
    this.parent = parent;

    // init UI
    sendCommand = new Command("Send", Command.OK, 1);
    exitCommand = new Command("Exit", Command.EXIT, 1);

    number = new TextField("number", "", 20, TextField.PHONENUMBER);
    text = new TextField("message", "", 300, TextField.ANY);
    password = new TextField("password", "", 24, TextField.PASSWORD);
    checksum = new ChoiceGroup("Add digest",
      ChoiceGroup.EXCLUSIVE,
      new String[]{"Yes", "No"},
      null);

    // create the form
    append(number);
    append(text);
    append(password);
    append(checksum);

    addCommand(sendCommand);
    addCommand(exitCommand);
    setCommandListener(this);
  }


  public void commandAction(Command cmd, Displayable displayable)
  {
    if (cmd == sendCommand)
    {
      // verify that all is in place
      if ((number.getString().length() == 0) ||
          (text.getString().length() == 0) ||
          (password.getString().length() < 8))
      {
        parent.showMessage("Parameters too short");
      }
      else
      {
        // send the message
        parent.sendMessage(number.getString(),
                           text.getString(),
                           password.getString(),
                           checksum.getSelectedIndex() == 0);
      }
    }
    if (cmd == exitCommand)
    {
      parent.notifyDestroyed();
    }
  }
}