// Not working - Unable to bind VisualStateGroup
// Still trying to implement this with only code

public class SegmentCode : Border {
    readonly string[] items = { "Pending", "Confirmed", "Completed" };
    // Extending is not equivalent to X:Name, looking for a solution
    class SegmentButton : Button {
        public SegmentButton() => this.Margins(0, 0, 8, 0);
    }

    public SegmentCode() {
        Padding = 3;
        Margin = 8;
        StrokeShape = new RoundRectangle {
            CornerRadius = new CornerRadius(10)
        };
        SetDynamicResource(BackgroundColorProperty, "Tertiary");
        var layout = new HorizontalStackLayout()
            .ItemsSource(items)
            .ItemTemplate(new DataTemplate(() => new RadioButton {
                ControlTemplate = new ControlTemplate(() => new SegmentButton()
                    .Bind(Button.TextProperty, "Content", source: RelativeBindingSource.TemplatedParent))
            }.Bind(RadioButton.ContentProperty)));
        RadioButtonGroup.SetGroupName(layout, "SegmentRadios");
        // Todo: Add VisualStateGroup to the baindable layout
        // Todo: Properly name child crontrols to reference in VistualState
        var vsGroups = new VisualStateGroup() {
            Name = "CheckedStates",
        };
        vsGroups.States.Add(new VisualState {
            Name = "Checked",
            Setters = {
                new Setter { TargetName = nameof(SegmentButton), Property = Button.BackgroundColorProperty, Value = Colors.Indigo }
            }
        });
        vsGroups.States.Add(new VisualState {
            Name = "Unchecked",
            Setters = {
                new Setter { TargetName = nameof(SegmentButton), Property = Button.BackgroundColorProperty, Value = Colors.Transparent },
                new Setter { TargetName = nameof(SegmentButton), Property = Button.TextColorProperty, Value = Colors.Indigo }
            }
        });
        var vsList = new VisualStateGroupList();
        vsList.Add(vsGroups)
        VisualStateManager.SetVisualStateGroups(layout, vsGroups);
        Content = layout;
    }
}