public static IDisposable Binding <TFilter, TObject>(
this AutoCompleteBox acb,
IFilterViewModel <TFilter, TObject> filterViewModel,
Action <IFilterViewModel <TFilter, TObject>, string> action = null,
Action <bool> busy = null,
int startWith = 1)
{
var disposableObject = new DisposableObject();
var searchTextEntered = acb.WhenAny(x => x.SearchText, x => x.Value)
.Do(_ => filterViewModel.Abort())
.Throttle(TimeSpan.FromSeconds(1))
.Where(text => !string.IsNullOrWhiteSpace(text))
.Where(text => text.Length >= startWith)
.ObserveOnUiSafeScheduler()
.Do(text =>
{
if (action != null)
{
action(filterViewModel, string.Concat(text, "*"));
}
});
disposableObject.Add(
searchTextEntered.Subscribe(
_ =>
{
if (filterViewModel.Result != null)
{
filterViewModel.Result.Clear();
}
filterViewModel.InvokeCommand.Execute(null);
}));
var loadCompleted = filterViewModel.WhenAny(x => x.Result, x => x.Value)
.Where(x => x != null && x.Count > 0);
disposableObject.Add(loadCompleted.ObserveOnUiSafeScheduler().Subscribe(
result =>
{
acb.ItemsSource = result;
if (acb.IsKeyboardFocusWithin)
{
acb.IsDropDownOpen = true;
}
}));
if (busy != null)
{
disposableObject.Add(filterViewModel.WhenAnyValue(x => x.IsBusy).Subscribe(busy));
}
return(disposableObject);
}