void OnNodeChanged(XNode node, XObjectChangeEventArgs args)
{
switch (args.ObjectChange)
{
case XObjectChange.Add:
_changes.OnNext(new XmlAddNodeChange(node.NodePath(), ImmutableXNode.Create(node)));
break;
case XObjectChange.Remove:
XmlRemoveNodeChange change;
if (!_pendingRemovalEvents.TryGetValue(node, out change))
{
throw new InvalidOperationException("Element removed, but parent not found in ");
}
_changes.OnNext(change);
break;
default:
throw new NotImplementedException();
}
}
void OnNodeChanging(XNode node, XObjectChangeEventArgs args)
{
if (args.ObjectChange == XObjectChange.Remove)
{
// TODO May not want to actually emit the event before Changed has also run
if (node.Parent == null)
{
throw new InvalidOperationException("Removed event only expected for non-root nodes");
}
_pendingRemovalEvents[node] = new XmlRemoveNodeChange(node.NodePath(), ImmutableXNode.Create(node));
}
}