protected override void OnReset(IReadOnlyList <TSource> newItems)
{
_sourceList.Clear();
for (int i = 0; i < newItems.Count; ++i)
{
_sourceList.Add(i, new ItemSet(_keySelector.Invoke(newItems[i]), newItems[i])
{
SourceIndex = i
});
}
IEnumerable <ItemSet> sortedItems;
if (ParameterValue == ListSortDirection.Ascending)
{
sortedItems = _sourceList.OrderBy(set => set.Key);
}
else
{
sortedItems = _sourceList.OrderByDescending(set => set.Key);
}
sortedItems = sortedItems.Select((set, index) =>
{
set.TargetIndex = index;
return(set);
});
ResultList.Reset(sortedItems);
}