private void IncrementallyChangeList <T>(ObservableCollectionWorkaround <T> oldList, IList <T> newList, IComparer <T> comparer)
{
if (newList.Count == 0)
{
oldList.Clear();
}
else
{
IList <T> list;
if (oldList.Count == 0)
{
list = newList;
}
else
{
HashSet <T> oldItemsSet = new HashSet <T>((IEnumerable <T>)oldList);
list = (IList <T>)Enumerable.ToList <T>(Enumerable.Where <T>((IEnumerable <T>)newList, (Func <T, bool>)(item => !oldItemsSet.Contains(item))));
oldItemsSet.ExceptWith((IEnumerable <T>)newList);
EnumerableExtensions.ForEach <T>((IEnumerable <T>)oldItemsSet, (Action <T>)(item => ((Collection <T>)oldList).Remove(item)));
}
foreach (T obj in (IEnumerable <T>)list)
{
int index = oldList.BinarySearch(obj, comparer);
if (index < 0)
{
index = ~index;
}
oldList.Insert(index, obj);
}
}
}
protected override ObservableCollectionWorkaround <LocalResourceModel> RecalculateLocalResources(ObservableCollectionWorkaround <LocalResourceModel> currentResources)
{
this.documentResourcesChangeStamp = this.DesignerContext.ResourceManager.ResourceChangeStamp;
if (this.DesignerContext.SelectionManager.SelectedNodes != null && this.DesignerContext.SelectionManager.SelectedNodes.Length != 0)
{
return(this.ProvideLocalResources(new List <ResourceContainer>(this.DesignerContext.ResourceManager.ActiveResourceContainers)));
}
if (currentResources == null)
{
return(new ObservableCollectionWorkaround <LocalResourceModel>());
}
currentResources.Clear();
return(currentResources);
}
