public WeightConversionTableViewModel(IActionSheetController sheetController, INavigationService navigationService, ISchedulerService scheduler, IViewModelFactory viewModelFactory)
: base(navigationService, scheduler)
{
if (viewModelFactory == null)
{
throw new ArgumentNullException(nameof(viewModelFactory));
}
Title = "Weight Conversion";
ShowNavigationBar = true;
Intent = TableIntent.Form;
SeparatorStyle = TableCellSeparatorStyle.SingleLine;
_topSection = AddSection("Converter");
var poundsCell = new NumericEntryCellViewModel()
{
Label = "Pounds", IsInteger = false
};
var kilosCell = new NumericEntryCellViewModel()
{
Label = "Kilos", IsInteger = false
};
poundsCell.Values.ObserveOn(Scheduler.UiScheduler)
.Where(e => e.HasValue)
.Subscribe((e) =>
{
// We have a new pounds value, we need to process this and push the related kilos value to the kilos cell.
kilosCell.Value = WeightConverter.ToKilosFromPounds(e.Value);
});
_topSection.AddCell(poundsCell);
kilosCell.Values.ObserveOn(Scheduler.UiScheduler)
.Where(e => e.HasValue)
.Subscribe((e) =>
{
poundsCell.Value = ImperialWeight.FromKilos(e.Value).TotalPounds;
});
_topSection.AddCell(kilosCell);
}