/// <inheritdoc />
public IObservable <IChangeSet <T> > Connect(Func <T, bool> predicate = null)
{
var observable = Observable.Create <IChangeSet <T> >(observer =>
{
lock (_locker)
{
var initial = new ChangeSet <T>(new[] { new Change <T>(ListChangeReason.AddRange, _readerWriter.Items) });
if (initial.TotalChanges > 0)
{
observer.OnNext(initial);
}
var source = _changes.Finally(observer.OnCompleted);
return(source.SubscribeSafe(observer));
}
});
if (predicate != null)
{
observable = new FilterStatic <T>(observable, predicate).Run();
}
return(observable);
}
/// <inheritdoc />
public IObservable <IChangeSet <T> > Preview(Func <T, bool> predicate = null)
{
IObservable <IChangeSet <T> > observable = _changesPreview;
if (predicate != null)
{
observable = new FilterStatic <T>(observable, predicate).Run();
}
return(observable);
}
