void ScenarioViewModel_CollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs e)
{
switch (e.Action)
{
case System.Collections.Specialized.NotifyCollectionChangedAction.Add:
for (int i = e.NewStartingIndex; i < e.NewStartingIndex + e.NewItems.Count; i++)
{
this[i].OwnerScenario = this;
Model.Insert(i, this[i].Model);
}
break;
case System.Collections.Specialized.NotifyCollectionChangedAction.Replace:
for (int i = e.NewStartingIndex; i < e.NewStartingIndex + e.NewItems.Count; i++)
{
this[i].OwnerScenario = this;
Model[i] = this[i].Model;
}
break;
case System.Collections.Specialized.NotifyCollectionChangedAction.Remove:
foreach (AtomViewModel atom in e.OldItems)
{
atom.OwnerScenario = null;
Model.RemoveAt(e.OldStartingIndex);
if (OwnerDocument != null)
{
OwnerDocument.ClearLinks(atom);
}
}
IsComplex = Items.Any(atom => atom.Model.Type == AtomTypes.Marker);
break;
case System.Collections.Specialized.NotifyCollectionChangedAction.Reset:
Model.Clear();
foreach (AtomViewModel atom in this)
{
atom.OwnerScenario = this;
Model.Add(atom.Model);
}
IsComplex = Items.Any(atom => atom.Model.Type == AtomTypes.Marker);
break;
}
UpdateCommands();
}