ComponentFactory.Krypton.Ribbon.GroupButtonController.KeyDownPopupMinimized C# (CSharp) Method

        private void KeyDownPopupMinimized(VisualPopupMinimized popupMinimized, KeyEventArgs e)
        {
            switch (e.KeyData)
            {
                case Keys.Tab | Keys.Shift:
                case Keys.Left:
                    popupMinimized.SetPreviousFocusItem();
                    break;
                case Keys.Tab:
                case Keys.Right:
                    popupMinimized.SetNextFocusItem();
                    break;
                case Keys.Space:
                case Keys.Enter:
                    // Generate appropriate event
                    switch (_buttonType)
                    {
                        case GroupButtonType.Push:
                        case GroupButtonType.Check:
                            // Exit keyboard mode when you click the button spec
                            _ribbon.KillKeyboardMode();

                            OnClick(new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0));
                            break;
                        case GroupButtonType.DropDown:
                        case GroupButtonType.Split:
                            // Kill the key tips mode
                            _ribbon.KillKeyboardKeyTips();

                            // Pretend we have captured input and then fix state as pressed
                            _hasFocus = true;
                            _captured = true;
                            _fixedPressed = true;

                            // Redraw to show the fixed state
                            UpdateTargetState(Point.Empty);

                            OnDropDown(new MouseEventArgs(MouseButtons.Left, 1, 0, 0, 0));
                            break;
                    }
                    break;
            }
        }