public void LazyLoading(IEnumerable <T> views)
{
var awaiter = LoadSegmentLazily(views).GetAwaiter();
awaiter.OnCompleted(() =>
{
try
{
awaiter.GetResult();
OnLazyLoadingCompleted?.Invoke(this, new AdapterLazyLoadingEventArgs(true, null));
}
catch (Exception ex)
{
OnLazyLoadingCompleted?.Invoke(this, new AdapterLazyLoadingEventArgs(false, ex));
}
});
}
public void Load()
{
if (_loading)
{
return;
}
_loading = true;
var getViewModelsAwaiter = GetViewModels().GetAwaiter();
getViewModelsAwaiter.OnCompleted(() =>
{
try
{
var viewModels = getViewModelsAwaiter.GetResult();
Items.Clear();
Items.AddRange(viewModels);
OnGetDataCompleted();
OnAdapterLoaded?.Invoke(this, new AdapterLoadingEventArgs(true, null));
Loaded = true;
if (LazyLoadingSettings == ELazyLoadingSettings.LoadEverything)
{
var loadDataLazilyAwaiter = LoadDataLazily().GetAwaiter();
loadDataLazilyAwaiter.OnCompleted(() =>
{
try
{
loadDataLazilyAwaiter.GetResult();
OnLazyLoadingCompleted?.Invoke(this, new AdapterLazyLoadingEventArgs(true, null));
_loading = false;
}
catch (Exception ex)
{
OnLazyLoadingCompleted?.Invoke(this, new AdapterLazyLoadingEventArgs(false, ex));
}
});
}
else if (LazyLoadingSettings == ELazyLoadingSettings.LoadVisibleSegments)
{
var loadDataLazilyAwaiter = LoadSegmentLazily(Items.Take(50)).GetAwaiter();
loadDataLazilyAwaiter.OnCompleted(() =>
{
try
{
loadDataLazilyAwaiter.GetResult();
OnLazyLoadingCompleted?.Invoke(this, new AdapterLazyLoadingEventArgs(true, null));
_loading = false;
}
catch (Exception ex)
{
OnLazyLoadingCompleted?.Invoke(this, new AdapterLazyLoadingEventArgs(false, ex));
}
});
}
else
{
_loading = false;
}
}
catch (Exception ex)
{
OnAdapterLoaded?.Invoke(this, new AdapterLoadingEventArgs(false, ex));
}
});
}