public AsynchronousViewModel()
{
// Notifier of network connecitng status/count
var connect = new CountNotifier();
// Notifier of network progress report
var progress = new ScheduledNotifier <Tuple <long, long> >(); // current, total
// skip initialValue on subscribe
SearchTerm = new ReactiveProperty <string>(mode: ReactivePropertyMode.DistinctUntilChanged);
// Search asynchronous & result direct bind
// if network error, use OnErroRetry
// that catch exception and do action and resubscript.
SearchResults = SearchTerm
.Select(async term =>
{
using (connect.Increment()) // network open
{
return(await WikipediaModel.SearchTermAsync(term, progress));
}
})
.Switch() // flatten
.OnErrorRetry((HttpRequestException ex) => ProgressStatus.Value = "error occured")
.ToReactiveProperty();
// CountChangedStatus : Increment(network open), Decrement(network close), Empty(all complete)
SearchingStatus = connect
.Select(x => (x != CountChangedStatus.Empty) ? "loading..." : "complete")
.ToReactiveProperty();
ProgressStatus = progress
.Select(x => string.Format("{0}/{1} {2}%", x.Item1, x.Item2, ((double)x.Item1 / x.Item2) * 100))
.ToReactiveProperty();
}
public AsynchronousViewModel()
{
// Notifier of network connecitng status/count
var connect = new CountNotifier();
// Notifier of network progress report
var progress = new ScheduledNotifier<Tuple<long, long>>(); // current, total
// skip initialValue on subscribe
SearchTerm = new ReactiveProperty<string>(mode: ReactivePropertyMode.DistinctUntilChanged);
// Search asynchronous & result direct bind
// if network error, use OnErroRetry
// that catch exception and do action and resubscript.
SearchResults = SearchTerm
.Select(async term =>
{
using (connect.Increment()) // network open
{
return await WikipediaModel.SearchTermAsync(term, progress);
}
})
.Switch() // flatten
.OnErrorRetry((HttpRequestException ex) => ProgressStatus.Value = "error occured")
.ToReactiveProperty();
// CountChangedStatus : Increment(network open), Decrement(network close), Empty(all complete)
SearchingStatus = connect
.Select(x => (x != CountChangedStatus.Empty) ? "loading..." : "complete")
.ToReactiveProperty();
ProgressStatus = progress
.Select(x => string.Format("{0}/{1} {2}%", x.Item1, x.Item2, ((double)x.Item1 / x.Item2) * 100))
.ToReactiveProperty();
}
public CountNotifierViewModel()
{
CountNotifierStatus = CountNotifier.Select(item => Enum.GetName(typeof(CountChangedStatus), item)).ToReactiveProperty().AddTo(DisposeCollection);
CountNotifierCount = CountNotifier.Select(item => CountNotifier.Count).ToReactiveProperty().AddTo(DisposeCollection);
CountNotifier
.ObserveOnUIDispatcher()
.Where(item => CountChangedStatus.Max.Equals(item))
.Where(_ => MessageBoxResult.Yes.Equals(MessageBox.Show("Maxになりましたが元に戻しますか？", "確認", MessageBoxButton.YesNo)))
.Subscribe(_ => beforeOperation.Dispose())
.AddTo(DisposeCollection);
Decrement1Command.ObserveOnUIDispatcher().Subscribe(_ => CountNotifier.Decrement(1)).AddTo(DisposeCollection);
Decrement10Command.ObserveOnUIDispatcher().Subscribe(_ => CountNotifier.Decrement(10)).AddTo(DisposeCollection);
DecrementNCommand.ObserveOnUIDispatcher().Subscribe(_ => CountNotifier.Decrement(DecrementN.Value)).AddTo(DisposeCollection);
Increment1Command.ObserveOnUIDispatcher().Subscribe(_ => beforeOperation = CountNotifier.Increment(1)).AddTo(DisposeCollection);
Increment10Command.ObserveOnUIDispatcher().Subscribe(_ => beforeOperation = CountNotifier.Increment(10)).AddTo(DisposeCollection);
IncrementNCommand.ObserveOnUIDispatcher().Subscribe(_ => beforeOperation = CountNotifier.Increment(IncrementN.Value)).AddTo(DisposeCollection);
MaxCommand.ObserveOnUIDispatcher().Subscribe(_ => beforeOperation = CountNotifier.Increment(CountNotifier.Max)).AddTo(DisposeCollection);
EmptyCommand.ObserveOnUIDispatcher().Subscribe(_ => CountNotifier.Decrement(CountNotifier.Max)).AddTo(DisposeCollection);
}