Microsoft.Windows.Controls.Ribbon.RibbonComboBox.ReevalutateFocusVisual C# (CSharp) Method

        private void ReevalutateFocusVisual()
        {
            bool enable = true;
            if (IsDropDownOpen)
            {
                enable = false;
            }
            else if (!(IsKeyboardFocused ||
                (EditableTextBoxSite != null && EditableTextBoxSite.IsKeyboardFocused) ||
                (PartToggleButton != null && PartToggleButton.IsKeyboardFocused)))
            {
                enable = false;
            }
            if (enable)
            {
                RibbonHelper.EnableFocusVisual(this);
            }
            else
            {
                RibbonHelper.DisableFocusVisual(this);
            }
        }