void OnElementsAddedToGroup(Group graphGroup, IEnumerable <GraphElement> element)
{
var groupData = graphGroup.userData as GroupData;
if (groupData != null)
{
var anyChanged = false;
foreach (var materialNodeView in element.Select(e => e).OfType <MaterialNodeView>())
{
if (materialNodeView.node.groupGuid != groupData.guid)
{
anyChanged = true;
break;
}
}
if (!anyChanged)
{
return;
}
m_Graph.owner.RegisterCompleteObjectUndo(groupData.title);
foreach (var materialNodeView in element.Select(e => e).OfType <MaterialNodeView>())
{
m_Graph.SetNodeGroup(materialNodeView.node, groupData);
}
}
}