What type of control is this? Some sort of Segment control but without borders? It works like a menu in that you can mouse down and drag... it will highlight as you drag and pick the one you release on.
How can I do something similar?
The big difference I need is to allow multiple selection which will show different sets of details in the area below it. I can do this with a series of NSButtons, but don't get the drag-over "menu" effect.
Ideas?
In the past, I have come across two example of implementation of Xcode-like inspector views:
https://github.com/malcommac/DMTabBar
https://github.com/smic/InspectorTabBar
Some time has passed, so they seem to me more the style of Xcode 4, but they should be ready to adapt to the new appearance.