/// <summary>
/// Unfocus this cell in the SpreadsheetPanel in the view.
/// </summary>
/// <param name="cellName"></param>
private void UnfocusCell(string cellName)
{
SpreadsheetPanel panel = window.GetSpreadsheetPanel();
ConvertCellNameToRowCol(cellName, out int row, out int col);
panel.Unfocus(row, col);
}