/* This project includes some functions such as inserting, appending and
replacing items on a form */

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class FormItems extends MIDlet implements CommandListener{
  // Declare objects
  private Display display;
  private Form Main;
  private Command cmInsert; // insert item command
  private DateField dfDate; // display date
  private TextField tfSize; // prduct size
  private TextField tfQuant; // product quantity
  private int DateIndex; // index of dfDate
  private Command Exit;
  String s1 = "Size";
  String s2 = "Large";

  public FormItems(){
    display = Display.getDisplay(this);

    // create date a retrieve date
    dfDate = new DateField(" ", DateField.DATE);
    dfDate.setDate(new java.util.Date());

    // Define two textfields and three commands
    tfSize = new TextField(s1,s2, 5, TextField.ANY);
    tfQuant = new TextField("Quantity: ", "3", 2, TextField.NUMERIC);
    cmInsert = new Command("Insert", Command.SCREEN, 1);
    Exit = new Command ("Exit", Command.EXIT, 1);

    // create the form, add insert command
    Main = new Form("Form Items");
    Main.addCommand(cmInsert);
    Main.addCommand(Exit);

    // Append date to form and save index value where it was inserted
    DateIndex = Main.append(dfDate);

    // capture events
    Main.setCommandListener(this);
  }
  //Start midlet
  public void startApp(){
    display.setCurrent(Main);
  }

  // pause application
  public void pauseApp(){

  }
  public void destroyApp(boolean unconditional){

  }
  public void commandAction(Command c, Displayable s){
    if (c == Exit){
      destroyApp(false);
      notifyDestroyed();
    }
    if (c == cmInsert){
      // one item on form, insert textfield before datfield
      if (Main.size() ==1){
        Main.insert(DateIndex, tfQuant);
        DateIndex +=1; // date index has changed update
      }
      // else if two items and last item is datefield, replace it
      else if (Main.size() == 2 && Main.get(1) == dfDate)
        Main.set(DateIndex, tfSize);

      }
  }
}