private void SubscribeToItem(T item)
{
bool wasFirstTimeAddedToCollection = this.ReferenceCountTracker.Add(item);
if (!wasFirstTimeAddedToCollection || !this.IsMonitoringChildProperties)
{
return;
}
if (_propertyChangedSubscription != null)
{
_propertyChangedSubscription.SubscribeToChanges((INotifyPropertyChanged)item, this);
}
else
{
SubscriptionTree subscriptionTree = this.PropertyAccessTree.CreateSubscriptionTree((INotifyPropertyChanged)item);
subscriptionTree.PropertyChanged += OnAnyPropertyChangeInSubscriptionTree;
this.Subscriptions.Add(item, subscriptionTree);
}
}
internal void SubscribeToChanges(T subject)
{
if (EntireTreeSupportINotifyPropertyChanging)
{
if (_PropertyAccessTree == null)
{
_PropertyAccessTree = PropertyAccessTree.CreateCallbackSubscription <PropertyNotifier <T> >(OnItemChanging, OnItemChanged);
}
_PropertyAccessTree.SubscribeToChanges(subject, this);
}
else
{
if (_Subscriptions == null)
{
_Subscriptions = new Dictionary <T, SubscriptionTree>();
}
SubscriptionTree tree = PropertyAccessTree.CreateSubscriptionTree(subject);
tree.PropertyChanged += OnAnyPropertyChangeInSubscriptionTree;
_Subscriptions.Add(subject, tree);
}
}