protected override IEnumerable <CollectionOperation <TAdaptee> > Enumerate()
{
foreach (var update in _adaptee.Operations())
{
switch (update.Type)
{
case CollectionOperationType.Add:
var added = _state.Get(update.Item, _removedOnChange);
yield return(CollectionOperation <TAdaptee> .OnAdd(added));
break;
case CollectionOperationType.Remove:
var removed = _state.Get(update.Item, _removedOnChange);
yield return(CollectionOperation <TAdaptee> .OnRemove(removed));
break;
case CollectionOperationType.Clear:
yield return(CollectionOperation <TAdaptee> .OnClear());
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}
protected override IEnumerable <ListOperation <TAdaptee> > Enumerate()
{
foreach (var update in _adaptee.Operations())
{
switch (update.Type)
{
case ListOperationType.Add:
yield return(ListOperation <TAdaptee> .OnAdd(
_state.Get(update.Item, _removed),
update.Index));
break;
case ListOperationType.Remove:
yield return(ListOperation <TAdaptee> .OnRemove(
_state.Get(update.Item, _removed),
update.Index));
break;
case ListOperationType.Move:
yield return(ListOperation <TAdaptee> .OnMove(
_state.Get(update.Item, _removed),
update.Index,
update.OriginalIndex));
break;
case ListOperationType.Replace:
yield return(ListOperation <TAdaptee> .OnReplace(
_state.Get(update.Item, _removed),
_state.Get(update.ChangedItem, _removed),
update.Index));
break;
case ListOperationType.Clear:
yield return(ListOperation <TAdaptee> .OnClear());
break;
default:
throw new ArgumentOutOfRangeException();
}
}
}