private void HandleTagCollectionChanges(object sender, NotifyDictionaryChangedEventArgs <string, TagPageSet> e)
{
Action a = null;
switch (e.Action)
{
case NotifyDictionaryChangedAction.Add:
a = () => Tags.AddAll(from i in e.Items select new TagSelectorModel(i, OnModelPropertyChanged));;
break;
case NotifyDictionaryChangedAction.Remove:
a = () => Tags.RemoveAll(from i in e.Items select i.Key);
break;
case NotifyDictionaryChangedAction.Reset:
a = () => Tags.Clear();
break;
}
if (a != null)
{
Dispatcher.Invoke(new Action(() => { a(); fireNotifyPropertyChanged(TAG_COUNT); }));
}
}