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

public class Hind1 extends MIDlet implements CommandListener{
    TextField tfAeg=new TextField("Aeg", "", 5, TextField.NUMERIC);
    StringItem vork=new StringItem("Võrk", "");
    StringItem vastus=new StringItem("Vastus", "");
    String[] vorgud={"EMT", "Tele2", "RLE"};
    int[] hinnad={500, 450, 250};
    List nimistu=new List("Võrgu valik", List.EXCLUSIVE, vorgud, null);
    Command c1=new Command("Arvuta", Command.SCREEN, 1);
    Command c2=new Command("Välju", Command.EXIT, 1);
    Command c3=new Command("Vali tehe", Command.SCREEN, 2);
    Command c4=new Command("Lõpeta valimine", Command.SCREEN, 1);
    Form f=new Form("Arvutaja");
    public Hind1(){
      f.append(tfAeg);
      f.append(vork);
      f.append(vastus);
      f.addCommand(c1);
      f.addCommand(c2);
      f.addCommand(c3);
      nimistu.addCommand(c4);
      f.setCommandListener(this);
      nimistu.setCommandListener(this);
      Display.getDisplay(this).setCurrent(f);
    }
    protected void startApp( ) throws MIDletStateChangeException{}
    protected void pauseApp( ){}
    protected void destroyApp( boolean p1 ) throws 
       MIDletStateChangeException{	}

  public void arvuta(){
     int aeg=Integer.parseInt(tfAeg.getString());
     int minutiHind=hinnad[nimistu.getSelectedIndex()];
     vastus.setText(String.valueOf(aeg*minutiHind));
  }

  public void commandAction( Command p1, Displayable p2 ){
    if (p1==c1){
      arvuta();
    }
    if(p1==c2){
      notifyDestroyed();
    }
    if(p1==c3){
      Display.getDisplay(this).setCurrent(nimistu);
    }
    if(p1==c4){
      vork.setText(nimistu.getString(nimistu.getSelectedIndex()));
      Display.getDisplay(this).setCurrent(f);
    }
  }


}