/* this Midlet is designed to show an impplicit list with associated images
and strings */

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

public class ImpList extends MIDlet implements CommandListener{
  private Display myDisplay; // Reference to a display
      private List lsChoice; // Our List
      private Command cmExit; // Exit Command
      private Command cmAdd; // Add Command

      public ImpList(){
        myDisplay = Display.getDisplay(this);

        // Create the commands
        cmExit = new Command("Exit", Command.EXIT, 1);
        cmAdd = new Command("Add", Command.SCREEN, 1);

        // Catch Exception Error
        try{

          // create and array of image items
          Image images[] = {Image.createImage("/Resources/ff.png"),
                            Image.createImage("/Resources/rew.png"),
                            Image.createImage("/Resources/new.png")};

          // Create array of Strings relating to images
          String selections[] = {"Next", "Previous", "New"};

          // create List using arrays, add commands, Listen for events
          lsChoice = new List("Your Option:", List.IMPLICIT, selections, images);
          lsChoice.addCommand(cmExit);
          lsChoice.addCommand(cmAdd);
          lsChoice.setCommandListener(this);
        }
        catch (java.io.IOException e){
          System.out.println("Unable to Find or Read .png file");
          System.out.println("Check if the path to .png file is correct!");
        }
      }

      // startApp
      public void startApp(){
        myDisplay.setCurrent(lsChoice);
      }

      // pauseApp
      public void pauseApp(){

      }

      // destroyApp
      public void destroyApp(boolean unconditional){
      }

      // commandAction for event handling
      public void commandAction(Command c, Displayable s){
        // check if an implicit list has generated an event
        if (c == List.SELECT_COMMAND){
          switch (lsChoice.getSelectedIndex()) {

            // if the first choice in the list is selected send string "Next"
            // to consol
            case 0:
              System.out.println("Next");
              break;

              // if the second choice in the list is selected send string
            // "Previous" to consol
            case 1:
              System.out.println("Previous");
              break;

              // if the Third choice in the list is selected send string "New"
            // to consol
            case 2:
              System.out.println("New");
              break;

              // set the default value to "New Task"
              default:
                System.out.println("New Task");
          }
        }
        // Otherwise if Add command is chosen we add a new member in the list
        // called "Delete"
        else if (c == cmAdd){

          // catch IO exception if application cannot find del.png
          try{
            // Add a new member to the list using size() as the insertion point
            //the new member will append to the list
            lsChoice.insert(lsChoice.size(), "Delete",
                            Image.createImage("/Resources/del.png"));
          }
          catch (java.io.IOException e) {
            System.err.println("Unable to find or read del.png file");
            System.out.println("Make sure the path is correct!");
          }
        }
        // otherwise if command is Exit then destroy application
        else if (c == cmExit){
          destroyApp(false);
          notifyDestroyed();
        }
      }

}