Custom NSTabView with lefttab

Question

I want to make a NSTabView like CleanMyMac or other application.

Answer 1

Never tried to customize NSOutlineView or NSTableView that heavily but I doubt it would get close enough to the custom (read: non-standard) behaviour you're looking for..

You can check for third party, Open Source controls that implement something similar. There are a couple of controls listed on Cocoa Controls that come pretty close.

Answer 2

Cocoa Controls is good idea. Maybe this is a nice starting point:

https://github.com/monyschuk/LITabControl