Fishlabs games lang editor

import javax.microedition.midlet.MIDlet;
import javax.microedition.lcdui.*;
import java.io.*;
import java.util.*;
import javax.microedition.io.*;
import javax.microedition.io.file.*;

public class LangEditor extends MIDlet implements CommandListener
{
FileConnection fc;
DataInputStream datain;
DataOutputStream dataout;
Vector lang_data;
Display display;
List mainmenu;
Form editor, filemanager, gomsg, save_ask;
TextField select_field, edit_field, goto_field;

Command open;
Command back;
Command next;
Command save;
Command menu;
Command select_msg;
Command go_msg;
Command yes;
Command no;

int msg_now, msg_all, writecount;

String loadedString, nowString, writeString;


public void startApp()
{
 display = Display.getDisplay(this);
 create_menu();
 create_filemanager();
 create_editor();
 create_gomsg();
 create_save_ask();
 lang_data = new Vector();
 display.setCurrent(mainmenu);
}

public void pauseApp()
{}

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

public void create_menu()
{
 mainmenu = new List("Main menu", List.IMPLICIT);
 mainmenu.append("Open *.lang file", null);
 mainmenu.append("Exit", null);
 mainmenu.setCommandListener(this);
}

public void create_filemanager()
{
 filemanager = new Form("Open *.lang file");
 select_field = new TextField("File path", "file:///c:/other/.lang" ,1024, TextField.ANY);
 filemanager.append(select_field);
 open = new Command("Open", Command.OK, 2);
 filemanager.addCommand(open);
 filemanager.setCommandListener(this);
}

public void create_editor()
{
 editor = new Form(null);
 edit_field = new TextField("", "" ,2400, TextField.ANY);
 editor.append(edit_field);
 next = new Command("Next", Command.OK, 1);
 back = new Command("Back", Command.OK, 1);
 select_msg = new Command("Go to...", Command.OK, 1);
 save = new Command("Save", Command.OK, 1);
 menu = new Command("Menu", Command.OK, 1);
 editor.addCommand(next);
 editor.addCommand(back);
 editor.addCommand(select_msg);
 editor.addCommand(save);
 editor.addCommand(menu);
 editor.setCommandListener(this);
}

public void create_gomsg()
{
 gomsg = new Form(null);
 goto_field = new TextField("", "" ,10, TextField.NUMERIC);
 gomsg.append(goto_field);
 go_msg = new Command("Go to...", Command.OK, 2);
 gomsg.addCommand(go_msg);
 gomsg.setCommandListener(this);
}

public void create_save_ask()
{
 save_ask = new Form(null);
 yes = new Command ("Yes", Command.OK, 2);
 no = new Command ("No", Command.OK, 2);
 save_ask.addCommand(yes);
 save_ask.addCommand(no);
 save_ask.setCommandListener(this);
 save_ask.append("Save changes?");
}

public void openlang()
{
 try
 {
  fc = (FileConnection)Connector.open (select_field.getString());
  datain = fc.openDataInputStream();
  dataout = fc.openDataOutputStream();
 }
 catch (IOException ioe)
 {}
}

public void readlang()
{
 do
 {
  try
  {
   loadedString = datain.readUTF();
  }
  catch (IOException ioe)
  {break;}
  catch (EOFException eofe)
  {}
  lang_data.addElement(loadedString);
 }
 while (loadedString != null);
}

public void closelang()
{
 try
 {
  datain.close();
  dataout.close();
  fc.close();
 }
 catch (IOException ioe)
 {}
}

public void initialize_editor()
{
 msg_now = 1;
 msg_all = lang_data.size();
 edit_field.setString(lang_data.firstElement().toString());
 editor.setTitle("Message " + msg_now + "/" + msg_all);
}

public void save_current(int i)
{
 nowString = edit_field.getString();
 lang_data.setElementAt(nowString, (i-1));
 nowString = null;
}

public void commandAction(Command cmd, Displayable dsp)
{
 if (dsp == mainmenu)
 {
  if (cmd == List.SELECT_COMMAND)
  {
   int selected = mainmenu.getSelectedIndex();
   switch(selected)
   {
    case 0:
     {display.setCurrent(filemanager);}
    break;

    case 1:
     {notifyDestroyed();}
    break;
   }
  }
 }

 if (dsp == filemanager)
 {
  if (cmd == open)
  {
   lang_data.removeAllElements();
   openlang();
   readlang();
   initialize_editor();
   closelang();
   display.setCurrent(editor);
  }
 }

 if (dsp == editor)
 {
  if (cmd == next && msg_now < msg_all)
  {
   save_current(msg_now);
   msg_now++;
   editor.setTitle("Message " + msg_now + "/" + msg_all);

   edit_field.setString(lang_data.elementAt(msg_now-1).toString());
  }

  if (cmd == back && msg_now>1)
  {
   save_current(msg_now);
   msg_now--;
   editor.setTitle("Message " + msg_now + "/" + msg_all);
   edit_field.setString(lang_data.elementAt(msg_now-1).toString());
  }

  if (cmd == select_msg)
  {
   save_current(msg_now);
   gomsg.setTitle("Go to 1.." + msg_all);
   display.setCurrent(gomsg);
  }

  if (cmd == save)
  {
   save_current(msg_now);
   writecount = 0;
   openlang();
   do
   {
    writeString = lang_data.elementAt(writecount).toString();
    try
    {
     dataout.writeUTF(writeString);
    }
    catch (IOException ioe)
    {}
    writecount++;
   }
   while (writecount < msg_all);
   closelang();
  }

  if (cmd == menu)
  {display.setCurrent(save_ask);}
 }

 if (dsp == gomsg)
 {
  if (cmd == go_msg)
  {
   msg_now = Integer.parseInt(goto_field.getString());
   if (msg_now > 1 && msg_now < msg_all)
   {
    edit_field.setString(lang_data.elementAt(msg_now-1).toString());
    editor.setTitle("Message " + msg_now + "/" + msg_all);
    display.setCurrent(editor);
   }
   else
   {
    gomsg.setTitle("Incorrect message");
   }
  }
 }

 if (dsp == save_ask)
 {
  if (cmd == yes)
  {
   save_current(msg_now);
   writecount = 0;
   openlang();
   do
   {
    writeString = lang_data.elementAt(writecount).toString();
    try
    {
     dataout.writeUTF(writeString);
    }
    catch (IOException ioe)
    {}
    writecount++;
   }
   while (writecount < msg_all);
   closelang();
   display.setCurrent(mainmenu);
  }

  if (cmd == no)
  {display.setCurrent(mainmenu);}
 }
}

}