private void OnSelectedSpreadSheetChange()
 {
     UndoHelper.WindowUndo(this, UndoHelper.UNDO_WIN_CHANGE);
     SpreadSheetConfigItem            = new GoogleSpreadSheetConfigEditorGUI(SelectedSpreadSheet);
     selectedConverter                = 0;
     EditorGUIUtility.keyboardControl = 0;
 }
        public void Initialize()
        {
            popupWin   = new SpreadSheetConvertToolPopupWindow();
            textAPIWin = new SpreadSheetConverterTestAPIPopupWindow();

            ConverterUtility.GetConverterSubClass();
            WindowHelper.Initialize(position);

            if (OAuthConfigItem == null)
            {
                OAuthConfigItem = new GoogleAPIOAuthConfigEditorGUI(GoogleAPIOAuthEditorConfig.Instance);
            }
            if (SpreadSheetConfigItem == null)
            {
                SpreadSheetConfigItem = new GoogleSpreadSheetConfigEditorGUI(SelectedSpreadSheet);
                OnSelectedSpreadSheetChange();
            }

            Repaint();

            IsInitialized = true;
        }