AcManager.Controls.UserControls.CarBlock.ShowroomButton_OnMouseDown C# (CSharp) Method

        private void ShowroomButton_OnMouseDown(object sender, MouseButtonEventArgs e) {
            if (e.ChangedButton == MouseButton.Left) {
                if (Keyboard.Modifiers.HasFlag(ModifierKeys.Alt)) {
                    e.Handled = true;
                    CustomShowroomWrapper.StartAsync(Car, SelectedSkin);
                    return;
                }

                if (Keyboard.Modifiers.HasFlag(ModifierKeys.Shift) ||
                        !CarOpenInShowroomDialog.Run(Car, SelectedSkin?.Id)) {
                    e.Handled = true;
                    new CarOpenInShowroomDialog(Car, SelectedSkin?.Id).ShowDialog();
                }
            } else if (e.ChangedButton == MouseButton.Right) {
                e.Handled = true;
                var contextMenu = new ContextMenu();

                var item = new MenuItem { Header = ControlsStrings.Car_OpenInShowroom };
                item.Click += (s, args) => CarOpenInShowroomDialog.Run(Car, SelectedSkin?.Id);
                contextMenu.Items.Add(item);

                item = new MenuItem { Header = ControlsStrings.Common_Presets };
                foreach (var menuItem in PresetsMenuHelper.GroupPresets(CarOpenInShowroomDialog.PresetableKeyValue, p => {
                    CarOpenInShowroomDialog.RunPreset(p.Filename, Car, SelectedSkin?.Id);
                })) {
                    item.Items.Add(menuItem);
                }
                contextMenu.Items.Add(item);

                item = new MenuItem { Header = ControlsStrings.Common_Settings, InputGestureText = UiStrings.KeyShift };
                item.Click += (s, args) => new CarOpenInShowroomDialog(Car, SelectedSkin?.Id).ShowDialog();
                contextMenu.Items.Add(item);

                // TODO: Presets!

                item = new MenuItem { Header = ControlsStrings.Car_OpenInCustomShowroom, InputGestureText = UiStrings.KeyAlt };
                item.Click += (s, args) => CustomShowroomWrapper.StartAsync(Car, SelectedSkin);
                contextMenu.Items.Add(item);

                contextMenu.IsOpen = true;
            }
        }
    }