/**************************************
* Source & Further Reading: J. W. Muchow (2002), Core J2ME Technology & MIDP, Sun MICROSYSTEMS
***************************************/

// A list to provide options for configuring the timer

import javax.microedition.lcdui.*;

class OptionsList extends List implements CommandListener{

  private AnimTimer midlet; // Main midlet
  private Command cmBack;

  // constructor
  public OptionsList(String title, int listType, AnimTimer midlet){
    // call list constructor
    super(title, listType);

    // save refernce to MIDlet to access displaymanager
    this.midlet = midlet;

    // create list entries
    append("Sleep interval", null);
    append("Start", null);
    append("Stop", null);

    // create command and listen for events
    cmBack = new Command("Back", Command.BACK, 1);
    addCommand(cmBack);
    setCommandListener(this);

  }
  public void commandAction(Command c, Displayable d){
    if(c == List.SELECT_COMMAND){
      switch (getSelectedIndex()){
        case 0:
          // Push current displayable and show the form to adjust timer sleep
          midlet.displayMgr.pushDisplayable(midlet.fmSleep);
          break;
          case 1:
            // start timer and retrurn to previous display
            midlet.cvTimer.startTimer();
            midlet.displayMgr.popDisplayable();
            break;
            case 2:
              // stop timer and return to previous displayable
              midlet.cvTimer.stopTimer();
              midlet.displayMgr.popDisplayable();
              break;
      }
    }
    else if(c == cmBack){
      // return to previous displayable
      midlet.displayMgr.popDisplayable();
    }
  }
}