Sliding Door Locker

I put a sliding door on my room but the wall where the door close is on cinderblocks. So not easy to add a standard locker system.
But I remember on old sliding windows, sometimes a small part attached on one window can rotate to block the two windows.

As I don't find any acceptable solution, I design this to be attached on a standard electric hole (for a light switch or an electrical outlet)

This first version contains 5 pieces. (maybe if I have time, I will reduce)

Locker, Pivot, Out