Locking Mechanism for sliding glass door

I would like a price and availably if possible for a sliding glass patio door locking mechanism in the photos attached. The handle is good just the locking mechanism is broken and will no longer lock. I don't know if I need the little handle that you would lift up or down to activate the lock or unlock. have not started to tear into to this project still looking for instruction on the removal and install of the locking mechanism.


Thank You for your help


Guy