protected CollectionViewSourceBase([NotNull] UICollectionView collectionView,
string itemTemplate = AttachedMemberConstants.ItemTemplate)
{
Should.NotBeNull(collectionView, nameof(collectionView));
_collectionView = TouchToolkitExtensions.CreateWeakReference(collectionView);
_itemTemplateProvider = new DataTemplateProvider <ICollectionCellTemplateSelector>(collectionView, itemTemplate);
var controllerView = collectionView.FindParent <IViewControllerView>();
if (controllerView != null && !(controllerView is IMvvmNavigationController))
{
_listener = ReflectionExtensions.CreateWeakEventHandler <CollectionViewSourceBase, EventArgs>(this, (adapter, o, arg3) => adapter.OnDisposeController(o, arg3));
controllerView.Mediator.DisposeHandler += _listener.Handle;
}
UseAnimations = collectionView
.GetBindingMemberValue(AttachedMembers.UICollectionView.UseAnimations)
.GetValueOrDefault(true);
ScrollPosition = collectionView
.GetBindingMemberValue(AttachedMembers.UICollectionView.ScrollPosition)
.GetValueOrDefault(UICollectionViewScrollPosition.Top);
}