public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
{
var desc = value as string;
var returnValue = ChartTypeViewModelSource.GetCumulativeChartViewModels()
.Concat(ChartTypeViewModelSource.GetDistributedChartViewModels())
.FirstOrDefault(x => x.Description == desc);
return(returnValue ?? new EnumerableViewModel <ChartType>(ChartType.None, "None"));
}
public HistoricalUsageStatsViewModel()
{
_isCumulativeChartCategoryActive = this.ObservableForProperty(vm => vm.ChartCategory, skipInitial: false)
.Select(prop => prop.Value == ChartCategory.Cumulative)
.ToProperty(this, vm => vm.IsCumulativeChartCategoryActive);
_isDistributedChartCategoryActive = this.ObservableForProperty(vm => vm.ChartCategory, skipInitial: false)
.Select(prop => prop.Value == ChartCategory.Distributed)
.ToProperty(this, vm => vm.IsDistributedChartCategoryActive);
_chartTypes = this.ObservableForProperty(vm => vm.ChartCategory, skipInitial: false)
.Select(prop => prop.Value == ChartCategory.Cumulative
? new ObservableCollection <string>(ChartTypeViewModelSource.GetCumulativeChartViewModels().Select(x => x.Description))
: new ObservableCollection <string>(ChartTypeViewModelSource.GetDistributedChartViewModels().Select(x => x.Description)))
.ToProperty(this, vm => vm.ChartTypes);
_chartUpdateBinding = this.WhenAnyValue(x => x.SelectedChartType,
x => x.SourceDataFile,
x => x.ChartCategory,
x => x.MovingAveragePeriod,
x => x.SelectedAggregationType)
.Subscribe(_ => RefreshChartCommand?.Execute(null));
}