public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
{
ReadOnlyObservableCollection <object> items = value as ReadOnlyObservableCollection <object>;
if (items == null)
{
throw new ArgumentNullException(nameof(items));
}
DateTime latestOrderDate = items.Max(x => x.OrderDate);
return(latestOrderDate);
}
public SeriesFormViewModel(
Series series,
ReadOnlyObservableCollection <Kind> kinds,
string fileName,
ResourceManager?resourceManager = null,
IScheduler?scheduler = null,
IEntityService <Series>?seriesService = null,
ISettingsService?settingsService = null)
: base(series.Entry, resourceManager, scheduler)
{
this.Series = series;
this.Kinds = kinds;
this.seriesService = seriesService ?? Locator.Current.GetService <IEntityService <Series> >(fileName);
this.settingsService = settingsService ?? Locator.Current.GetService <ISettingsService>(fileName);
this.SelectComponent = ReactiveCommand.Create <ISeriesComponentForm, ISeriesComponentForm>(
form => form);
this.componentsSource.Connect()
.Transform(this.CreateForm)
.Sort(
SortExpressionComparer <ISeriesComponentForm> .Ascending(form => form.SequenceNumber),
resort: this.resort)
.Bind(out this.componentForms)
.DisposeMany()
.Subscribe();
this.ComponentForms.ToObservableChangeSet()
.Transform(this.CreateComponent)
.Bind(out this.components)
.DisposeMany()
.Subscribe();
this.ComponentForms.ToObservableChangeSet()
.Filter(form => form is SeasonFormViewModel)
.Transform(form => (SeasonFormViewModel)form)
.Bind(out this.seasons)
.DisposeMany()
.Subscribe();
this.ComponentForms.ToObservableChangeSet()
.Filter(form => form is SpecialEpisodeFormViewModel)
.Transform(form => (SpecialEpisodeFormViewModel)form)
.Bind(out this.specialEpisodes)
.DisposeMany()
.Subscribe();
this.Components.ToObservableChangeSet()
.AutoRefresh(component => component.SequenceNumber)
.ToCollection()
.Select(components => components.Count != 0 ? components.Max(c => c.SequenceNumber) : 0)
.Subscribe(this.maxSequenceNumberSubject);
this.CopyProperties();
this.ImdbLinkRule = this.ValidationRule(vm => vm.ImdbLink, link => link.IsUrl(), "ImdbLinkInvalid");
this.PosterUrlRule = this.ValidationRule(vm => vm.PosterUrl, url => url.IsUrl(), "PosterUrlInvalid");
this.AddSeason = ReactiveCommand.CreateFromTask(this.AddSeasonAsync);
this.AddSpecialEpisode = ReactiveCommand.Create(this.OnAddSpecialEpisode);
this.ConvertToMiniseries = ReactiveCommand.Create(() => { }, this.CanConvertToMiniseries);
this.AddSeason
.Merge(this.AddSpecialEpisode)
.SelectMany(_ => this.ComponentForms.MaxBy(season => season.SequenceNumber))
.Cast <ISeriesComponentForm>()
.InvokeCommand(this.SelectComponent);
this.CanDeleteWhenNotChanged();
this.CanCreateMovieSeries();
this.EnableChangeTracking();
}
