public WheelController(CarView carView, SubscriptionProperty <float> leftMove, SubscriptionProperty <float> rightMove)
        {
            _leftMove  = leftMove;
            _rightMove = rightMove;

            _diff = new SubscriptionProperty <float>();
            _leftMove.SubscribeOnChange(Move);
            _rightMove.SubscribeOnChange(Move);

            _wheelView = LoadView(carView);
            _wheelView.Init(_diff);
        }
        public override void ViewDidLoad()
        {
            base.ViewDidLoad();

            StartLabel.Text = Resources.Start;
            EndLabel.Text   = Resources.End;
            TitleLabel.Text = Resources.StartAndStopTime;
            SetEndButton.SetTitle(Resources.Stop, UIControlState.Normal);
            SaveButton.SetTitle(Resources.Save, UIControlState.Normal);

            prepareViews();

            // Actions
            SaveButton.Rx()
            .BindAction(ViewModel.Save)
            .DisposedBy(disposeBag);

            CloseButton.Rx()
            .BindAction(ViewModel.Close)
            .DisposedBy(disposeBag);

            // Start and stop date/time
            ViewModel.StartTimeString
            .Subscribe(StartTimeLabel.Rx().Text())
            .DisposedBy(disposeBag);

            ViewModel.StartDateString
            .Subscribe(StartDateLabel.Rx().Text())
            .DisposedBy(disposeBag);

            ViewModel.StopTimeString
            .Subscribe(EndTimeLabel.Rx().Text())
            .DisposedBy(disposeBag);

            ViewModel.StopDateString
            .Subscribe(EndDateLabel.Rx().Text())
            .DisposedBy(disposeBag);

            // Editing start and end time
            StartView.Rx()
            .BindAction(ViewModel.EditStartTime)
            .DisposedBy(disposeBag);

            EndView.Rx()
            .BindAction(ViewModel.EditStopTime)
            .DisposedBy(disposeBag);

            SetEndButton.Rx()
            .BindAction(ViewModel.EditStopTime)
            .DisposedBy(disposeBag);

            // Visibility
            ViewModel.IsRunning
            .Subscribe(running =>
            {
                SetEndButton.Hidden = !running;
                EndTimeLabel.Hidden = running;
                EndDateLabel.Hidden = running;
            })
            .DisposedBy(disposeBag);

            // Stard and end colors
            ViewModel.IsEditingStartTime
            .Select(editingStartTime => editingStartTime
                    ? Color.EditDuration.EditedTime.ToNativeColor()
                    : Color.EditDuration.NotEditedTime.ToNativeColor()
                    )
            .Subscribe(color =>
            {
                StartTimeLabel.TextColor = color;
                StartDateLabel.TextColor = color;
            })
            .DisposedBy(disposeBag);

            ViewModel.IsEditingStopTime
            .Select(editingStartTime => editingStartTime
                    ? Color.EditDuration.EditedTime.ToNativeColor()
                    : Color.EditDuration.NotEditedTime.ToNativeColor()
                    )
            .Subscribe(color =>
            {
                EndTimeLabel.TextColor = color;
                EndDateLabel.TextColor = color;
            })
            .DisposedBy(disposeBag);

            // Date picker
            ViewModel.IsEditingTime
            .Subscribe(DatePickerContainer.Rx().AnimatedIsVisible())
            .DisposedBy(disposeBag);

            DatePicker.Rx().Date()
            .Subscribe(ViewModel.ChangeActiveTime.Inputs)
            .DisposedBy(disposeBag);

            var startTime = ViewModel.IsEditingStartTime
                            .Where(CommonFunctions.Identity)
                            .SelectMany(_ => ViewModel.StartTime);

            var stopTime = ViewModel.IsEditingStopTime
                           .Where(CommonFunctions.Identity)
                           .SelectMany(_ => ViewModel.StopTime);

            Observable.Merge(startTime, stopTime)
            .Subscribe(v => DatePicker.SetDate(v.ToNSDate(), false))
            .DisposedBy(disposeBag);

            ViewModel.IsEditingStartTime
            .Where(CommonFunctions.Identity)
            .SelectMany(_ => ViewModel.StartTime)
            .Subscribe(v => DatePicker.SetDate(v.ToNSDate(), false))
            .DisposedBy(disposeBag);

            ViewModel.MinimumDateTime
            .Subscribe(v => DatePicker.MinimumDate = v.ToNSDate())
            .DisposedBy(disposeBag);

            ViewModel.MaximumDateTime
            .Subscribe(v => DatePicker.MaximumDate = v.ToNSDate())
            .DisposedBy(disposeBag);

            ViewModel.TimeFormat
            .Subscribe(v => DatePicker.Locale = v.IsTwentyFourHoursFormat ? new NSLocale("en_GB") : new NSLocale("en_US"))
            .DisposedBy(disposeBag);

            // DurationInput

            ViewModel.IsEditingTime
            .Invert()
            .Subscribe(DurationInput.Rx().Enabled())
            .DisposedBy(disposeBag);

            ViewModel.Duration
            .Subscribe(v => DurationInput.Duration = v)
            .DisposedBy(disposeBag);

            ViewModel.DurationString
            .Subscribe(v => DurationInput.FormattedDuration = v)
            .DisposedBy(disposeBag);

            DurationInput.Rx().Duration()
            .Subscribe(ViewModel.ChangeDuration.Inputs)
            .DisposedBy(disposeBag);

            // The wheel

            ViewModel.IsEditingTime
            .Invert()
            .Subscribe(v => WheelView.UserInteractionEnabled = v)
            .DisposedBy(disposeBag);

            ViewModel.MinimumStartTime
            .Subscribe(v => WheelView.MinimumStartTime = v)
            .DisposedBy(disposeBag);

            ViewModel.MaximumStartTime
            .Subscribe(v => WheelView.MaximumStartTime = v)
            .DisposedBy(disposeBag);

            ViewModel.MinimumStopTime
            .Subscribe(v => WheelView.MinimumEndTime = v)
            .DisposedBy(disposeBag);

            ViewModel.MaximumStopTime
            .Subscribe(v => WheelView.MaximumEndTime = v)
            .DisposedBy(disposeBag);

            ViewModel.StartTime
            .Subscribe(v => WheelView.StartTime = v)
            .DisposedBy(disposeBag);

            ViewModel.StopTime
            .Subscribe(v => WheelView.EndTime = v)
            .DisposedBy(disposeBag);

            ViewModel.IsRunning
            .Subscribe(v => WheelView.IsRunning = v)
            .DisposedBy(disposeBag);

            WheelView.Rx().StartTime()
            .Subscribe(ViewModel.ChangeStartTime.Inputs)
            .DisposedBy(disposeBag);

            WheelView.Rx().EndTime()
            .Subscribe(ViewModel.ChangeStopTime.Inputs)
            .DisposedBy(disposeBag);

            // Interaction observables for analytics

            var editingStart = Observable.Merge(
                StartView.Rx().Tap().SelectValue(true),
                EndView.Rx().Tap().SelectValue(false)
                );

            var dateComponentChanged = DatePicker.Rx().DateComponent()
                                       .WithLatestFrom(editingStart,
                                                       (_, isStart) => isStart ? EditTimeSource.BarrelStartDate : EditTimeSource.BarrelStopDate
                                                       );

            var timeComponentChanged = DatePicker.Rx().TimeComponent()
                                       .WithLatestFrom(editingStart,
                                                       (_, isStart) => isStart ? EditTimeSource.BarrelStartTime : EditTimeSource.BarrelStopTime
                                                       );

            var durationInputChanged = DurationInput.Rx().Duration()
                                       .SelectValue(EditTimeSource.NumpadDuration);

            Observable.Merge(
                dateComponentChanged,
                timeComponentChanged,
                WheelView.TimeEdited,
                durationInputChanged
                )
            .Distinct()
            .Subscribe(ViewModel.TimeEditedWithSource)
            .DisposedBy(disposeBag);
        }