void ProcessNodeEvents()
{
NodeGroup selected = null;
foreach (var node in Enumerable.Reverse(nodes))
{
if (node.UpdateSelection(Event.current, selection))
{
selected = node;
}
}
if (selected != null)
{
// push node to the back of the list so it gets drawn on top
nodes.Remove(selected);
nodes.Add(selected);
}
}
void RemoveNode(NodeGroup node)
{
nodes.Remove(node);
}