objective c - Automator Stack Like Interface with Cocoa -

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i've been attempting create automator styled interface similar this: automator interface

my approach has been nstableview view based cells, along way i've met many pitfalls cell row sizing , interaction troubles, way go (nstableview) or there better approach i'm missing?

update: hear view based table views (rather cell based) on lion onwards , i'd have support snow leopard; cell based easy enough add interaction or there better option?


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