void FilterLimitedViewModels(IEnumerable <TViewModel> viewmodels, bool sorted = false)
{
notifying = true;
bool filterApplied = false;
if (Limitation?.Enabled ?? false)
{
int previousViewmodels = viewmodels.Count();
viewmodels = viewmodels.Except(StaticViewModels).Take(Limitation.Maximum);
viewmodels = viewmodels.Union(StaticViewModels);
filterApplied = viewmodels.Count() != previousViewmodels;
}
if (sorted || filterApplied)
{
LimitedViewModels?.Reset(viewmodels);
}
else
{
LimitedViewModels?.Replace(viewmodels);
}
notifying = false;
}
protected override void DisposeManagedResources()
{
LimitedViewModels.IgnoreEvents = true;
LimitedViewModels.CollectionChanged -= HandleViewModelsCollectionChanged;
base.ViewModels.IgnoreEvents = true;
base.ViewModels.CollectionChanged -= HandleBaseViewModelModelsCollectionChanged;
base.DisposeManagedResources();
Limitation = null;
if (LimitedViewModels != null && LimitedViewModels.Any())
{
foreach (var viewModel in LimitedViewModels)
{
viewModel.Dispose();
}
LimitedViewModels.Clear();
}
LimitedViewModels = null;
}
/// <summary>
/// Gets the enumerator of the LimitedViewModels. This method is automatically called in a foreach.
/// </summary>
/// <returns>The enumerator.</returns>
public override IEnumerator <TViewModel> GetEnumerator()
{
return(LimitedViewModels.GetEnumerator());
}
