/// <summary>
/// Callback for port connection. Handles clearing the watch.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void InputPortConnected(PortModel sender)
{
Tuple <int, NodeModel> input;
if (TryGetInput(InPorts.IndexOf(sender), out input))
{
var oldId = astBeingWatched;
astBeingWatched = input.Item2.GetAstIdentifierForOutputIndex(input.Item1);
if (oldId != null && astBeingWatched.Value != oldId.Value)
{
CachedValue = null;
if (Root != null)
{
Root.Children.Clear();
}
}
}
}
