protected override void OnAttach()
{
var notifiable = inner as INotifyCollectionChanged;
if (notifiable != null)
{
listener.Subscribe(notifiable);
}
}
void SequencesCollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
if (e.Action != NotifyCollectionChangedAction.Reset)
{
var notification = CollectionChangedNotificationResult <T> .Create(this);
var removed = notification.RemovedItems;
var added = notification.AddedItems;
if (e.OldItems != null)
{
foreach (IEnumerable <T> sequence in e.OldItems)
{
removed.AddRange(sequence);
INotifyCollectionChanged notifier = sequence as INotifyCollectionChanged;
if (notifier != null)
{
var listener = changeListener[sequence];
listener.Unsubscribe();
changeListener.Remove(sequence);
}
}
}
if (e.NewItems != null)
{
foreach (IEnumerable <T> sequence in e.NewItems)
{
added.AddRange(sequence);
INotifyCollectionChanged notifier = sequence as INotifyCollectionChanged;
if (notifier != null)
{
var listener = new CollectionChangeListener <T>(this);
listener.Subscribe(notifier);
changeListener.Add(sequence, listener);
}
}
}
ExecutionMetaData.Results.Add(notification);
}
ExecutionEngine.Current.InvalidateNode(this);
}