// This package defines MIDP applications and the interactions
// between the application and the environment in which the
// application runs.
import javax.microedition.midlet.*;

// This package provides a set of features for implementation
// of user interfaces.
import javax.microedition.lcdui.*;


public class  GuiTests
    extends  MIDlet 
    implements  CommandListener {

  // display manager
  Display  display;
    
  // a menu with items; main menu
  List  menu;

  // list of choices
  List  choose;

  // textbox
  TextBox  input;

  // ticker
  Ticker  ticker = new Ticker( "Test GUI Components" );

  // alerts
  final Alert  soundAlert = new Alert( "sound Alert" );

  // date
  DateField  date = new DateField( "Today's date: ", DateField.DATE );

  // form
  Form  form = new Form( "Form for Stuff" );

  // today's form
  Form  today = new Form( "Today's date" );
        
  // gauge
  Gauge  gauge = new Gauge( "Progress Bar", false, 20, 9 );

  // text field
  TextField  textfield = new TextField( "TextField Label", "abc", 50, 0 );

  // command
  static final  Command backCommand     = new Command( "Back", Command.BACK, 0 );
  static final  Command mainMenuCommand = new Command( "Main", Command.SCREEN, 1 );
  static final  Command exitCommand     = new Command( "Exit", Command.STOP, 2 );
  String  currentMenu;


  // constructor.
  public  GuiTests( ) { }


  /*********************************************************
   *                                                       *
   *    Start the MIDlet by creating a list of items       *
   *    and associating the exit command with it.          *
   *                                                       *
   *********************************************************/

  public void  startApp( )
      throws  MIDletStateChangeException {
    display = Display.getDisplay( this );
    menu = new List( "Test Components", Choice.IMPLICIT );
    menu.append( "Test TextBox", null );
    menu.append( "Test List", null );
    menu.append( "Test Alert", null );
    menu.append( "Test Date", null );
    menu.append( "Test Form", null );
    menu.addCommand( exitCommand );
    menu.setCommandListener( this );
    menu.setTicker( ticker );
    mainMenu( );

    // form
    form.append( gauge );
    form.append( textfield );

    // today
    today.append( date );
  }


  public void  pauseApp( ) {
    display   = null;
    choose    = null;
    menu      = null;
    ticker    = null;
    form      = null;
    today     = null;
    input     = null;
    gauge     = null;
    textfield = null;      
  }


  public void  destroyApp( boolean unconditional ) {
    notifyDestroyed( );
  }


  // main menu
  void  mainMenu( ) {
    display.setCurrent( menu );
    currentMenu = "Main";
  }


  /*********************************************************
   *                                                       *
   *    Test the TextBox component.                        *
   *                                                       *
   *********************************************************/

  public void  testTextBox( ) {
    input = new TextBox( "Enter Some Text:", "", 10, TextField.ANY );
    input.setTicker( new Ticker( "Testing TextBox" ) );
    input.addCommand( backCommand );
    input.setCommandListener( this );
    input.setString( "" );
    display.setCurrent( input );
    currentMenu = "input";
  }


  /*********************************************************
   *                                                       *
   *    Test the List component.                           *
   *                                                       *
   *********************************************************/

  public void  testList( ) {
    choose = new List( "Choose Items", Choice.MULTIPLE );
    choose.setTicker( new Ticker( "Testing List" ) );
    choose.addCommand( backCommand );
    choose.setCommandListener( this );
    choose.append( "Item 1", null );
    choose.append( "Item 2", null );
    choose.append( "Item 3", null );
    display.setCurrent( choose );
    currentMenu = "list"; 
  }


  /*********************************************************
   *                                                       *
   *    Test the Alert component.                          *
   *                                                       *
   *********************************************************/

  public void  testAlert( ) {
    soundAlert.setType( AlertType.ERROR );

    //soundAlert.setTimeout( 20 );
    soundAlert.setString( "** ERROR **" );
    display.setCurrent( soundAlert );
  }


  /*********************************************************
   *                                                       *
   *    Test the DateField component.                      *
   *                                                       *
   *********************************************************/

  public void  testDate( ) {
    java.util.Date  now = new java.util.Date( );
    date.setDate( now );
    today.addCommand( backCommand );
    today.setCommandListener( this );
    display.setCurrent( today );
    currentMenu = "date";
  }


  /*********************************************************
   *                                                       *
   *    Test the Form component.                           *
   *                                                       *
   *********************************************************/

  public void  testForm( ) {
    form.addCommand( backCommand );
    form.setCommandListener( this );
    display.setCurrent( form );
    currentMenu = "form";
  }


  /*********************************************************
   *                                                       *
   *    Handle events.                                     *
   *                                                       *
   *********************************************************/

  public void  commandAction( Command c, Displayable d ) {
    String  label = c.getLabel( );
    if ( label.equals( "Exit" ) ) {
      destroyApp( true );
    } 
    else if ( label.equals( "Back" ) ) {
      if ( currentMenu.equals( "list" ) || currentMenu.equals( "input" ) ||
           currentMenu.equals( "date" ) || currentMenu.equals( "form" ) ) {
        // go back to menu
        mainMenu( );
      } 
    } 
    else {
      List  down = (List) display.getCurrent( );
      switch( down.getSelectedIndex( ) ) {
        case 0: testTextBox( );  break;
        case 1: testList( );     break;
        case 2: testAlert( );    break;
        case 3: testDate( );     break;
        case 4: testForm( );     break;
      }
    }
  }
}