// removes refs from the tracker, and reports removed external refs
private void RemoveReference(DomNode owner, AttributeInfo attributeInfo, DomNode target)
{
List <Pair <DomNode, AttributeInfo> > referenceList;
if (m_nodeReferenceLists.TryGetValue(target, out referenceList))
{
referenceList.Remove(new Pair <DomNode, AttributeInfo>(owner, attributeInfo));
if (referenceList.Count == 0)
{
m_nodeReferenceLists.Remove(target);
}
}
// if target's root isn't the context's root, then it's an external reference
// that is being removed.
DomNode targetRoot = target.GetRoot();
if (DomNode != targetRoot)
{
ReferenceEventArgs e = new ReferenceEventArgs(owner, attributeInfo, target);
OnExternalReferenceRemoved(e);
ExternalReferenceRemoved.Raise(this, e);
}
}
/// <summary>
/// Performs actions after a reference to an external DOM node is removed</summary>
/// <param name="e">Event args describing reference</param>
protected virtual void OnExternalReferenceRemoved(ReferenceEventArgs e)
{
ExternalReferenceRemoved.Raise(this, e);
}