AcManager.Pages.Windows.MainWindow.OnKeyDown C# (CSharp) Method

        private void OnKeyDown(object sender, KeyEventArgs e) {
            if (Keyboard.Modifiers != ModifierKeys.Alt && Keyboard.Modifiers != (ModifierKeys.Alt | ModifierKeys.Shift) ||
                    !SettingsHolder.Drive.QuickSwitches) return;
           
            switch (e.SystemKey) {
                case Key.OemTilde:
                    ToggleQuickSwitches();
                    break;

                default:
                    var k = e.SystemKey - Key.D1;
                    if (k < 0 || k > 9) return;

                    InitializePopup();
                    var child = GetQuickSwitches().ElementAtOrDefault(k);
                    if (child == null) break;

                    QuickSwitchesNotification.SetValue(TextBlock.ForegroundProperty, child.GetValue(TextBlock.ForegroundProperty));

                    var toggle = child as ModernToggleButton;
                    if (toggle != null) {
                        toggle.IsChecked = !toggle.IsChecked;
                        ShowQuickSwitchesPopup(toggle.IconData, $@"{toggle.Content}: {toggle.IsChecked.ToReadableBoolean()}", child.ToolTip);
                        break;
                    }

                    var button = child as ModernButton;
                    if (button != null) {
                        button.Command?.Execute(null);
                        ShowQuickSwitchesPopup(button.IconData, button.Content?.ToString(), child.ToolTip);
                        break;
                    }

                    var presets = child as QuickSwitchPresetsControl;
                    if (presets != null) {
                        if (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift)) {
                            presets.SwitchToPrevious();
                        } else {
                            presets.SwitchToNext();
                        }
                        ShowQuickSwitchesPopup(presets.IconData, $@"{presets.CurrentUserPreset.DisplayName}", child.ToolTip);
                        break;
                    }

                    var combo = child as QuickSwitchComboBox;
                    if (combo != null && combo.Items.Count > 1) {
                        var index = combo.SelectedIndex;
                        combo.SelectedItem = combo.Items[(index + (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift) ? -1 : 1) +
                                combo.Items.Count) % combo.Items.Count];
                        ShowQuickSwitchesPopup(combo.IconData, $@"{combo.SelectedItem}", child.ToolTip);
                        break;
                    }

                    var slider = child as QuickSwitchSlider;
                    if (slider != null) {
                        var step = (slider.Maximum - slider.Minimum) / 6d;
                        var position = (((slider.Value - slider.Minimum) / step - 1).Clamp(0, 4).Round(1d) +
                                (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift) ? -1 : 1) + 5) % 5;
                        slider.Value = slider.Minimum + (position + 1) * step;
                        ShowQuickSwitchesPopup(slider.IconData, $@"{slider.Content}: {slider.DisplayValue}", child.ToolTip);
                    }

                    // special case for controls presets
                    var dock = child as DockPanel;
                    if (dock != null) {
                        if (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift)) {
                            ControlsPresets.Instance.SwitchToPrevious();
                        } else {
                            ControlsPresets.Instance.SwitchToNext();
                        }

                        ShowQuickSwitchesPopup(dock.FindLogicalChild<Path>()?.Data, $@"{AcSettingsHolder.Controls.CurrentPresetName}", child.ToolTip);
                    }

                    break;
            }

            e.Handled = true;
        }