public void Clear_CallsHandleChangeWithCollectionClearedArgs()
{
var previousItems = new[] { CreateItem(), CreateItem() };
Collection.Add(previousItems[0]);
Collection.Add(previousItems[1]);
ResetStub();
Collection.Clear();
AssertChangeArgs(
CollectionChangedArgs <IViewModel> .CollectionCleared(Collection, previousItems)
);
}
/// <inheritdoc />
protected override void ClearItems()
{
if (IsPopulating)
{
base.ClearItems();
return;
}
TItemVM[] oldItems = this.ToArray();
base.ClearItems();
CallBehaviors(CollectionChangedArgs <TItemVM> .CollectionCleared(this, oldItems));
}
protected void HandleCollectionCleared(TItemVM[] previousItems)
{
var args = CollectionChangedArgs <TItemVM> .CollectionCleared(Collection, previousItems);
Behavior.HandleChange(Context, args);
}