BaconBuilder.Controller.MainViewController.ValidateTitle C# (CSharp) Метод

        public void ValidateTitle()
        {
            if (_model.CurrentFileNameWithExtension == null) return;
            // If the new title is invalid (e.g. blank, only spaces)
            if (_view.TitleText.Trim().Length == 0)
            {
                MessageBox.Show(@"Title cannot be blank or just spaces.");
                _view.TitleText = _model.CurrentFileName;
                return;
            }
            // If the text has changed.
            if (_view.TitleText.Equals(_model.CurrentFileName)) return;

            // Since the title is valid and changed, we rename it.
            int index = FindItem(_model.CurrentFileNameWithExtension);
            try
            {
                RenameFile(_model.CurrentFileName, _view.TitleText);
            }
            catch (IOException ex)
            {
                Console.WriteLine(ex.Message);
                MessageBox.Show(ex.Message, @"Error");
                _view.TitleText = _model.CurrentFileName;
                return;
            }
            RefreshDirectory();
            _view.Files[index].Selected = true;
        }