public ObservableGroup(ObservableGroupToken token, IEnumerable <IEntity> initialEntities, INotifyingEntityCollection notifyingCollection)
{
Token = token;
NotifyingCollection = notifyingCollection;
_onEntityAdded = new Subject <IEntity>();
_onEntityRemoved = new Subject <IEntity>();
_onEntityRemoving = new Subject <IEntity>();
Subscriptions = new List <IDisposable>();
CachedEntities = initialEntities.Where(x => Token.LookupGroup.Matches(x)).ToDictionary(x => x.Id, x => x);
MonitorEntityChanges();
}
private void MonitorEntityChanges(INotifyingEntityCollection notifyingCollection)
{
notifyingCollection.EntityAdded
.Subscribe(OnEntityAddedToCollection)
.AddTo(Subscriptions);
notifyingCollection.EntityRemoved
.Subscribe(OnEntityRemovedFromCollection)
.AddTo(Subscriptions);
notifyingCollection.EntityComponentsAdded
.Subscribe(OnEntityComponentAdded)
.AddTo(Subscriptions);
notifyingCollection.EntityComponentsRemoving
.Subscribe(OnEntityComponentRemoving)
.AddTo(Subscriptions);
notifyingCollection.EntityComponentsRemoved
.Subscribe(OnEntityComponentRemoved)
.AddTo(Subscriptions);
}