GraphView Node Selector

Hi All, I’m looking to implement a UIElements icon based Node Selector Panel for a GraphView EditorWindow I’m building. I’d like it operate similarly to the UIElement selector in UIBuilder. I just wondered if anyone has had any experience with this or could point me in the right direction. I’d hate to go build it from scratch only to find there’s an undocumented UIElement in the codebase from UIBuilder or something.
Any help appreciated.

Are you looking for something similar to what is offered by the blackboard?