Candidly, I don't know how to do this effectively, especially with browsers. I looked into this approach using the notification pattern, but I just couldn't see

Candidly, I don't know how to do this effectively, especially with browsers. I looked into this approach using the notification pattern, but I just couldn't see a good way to do it. I'm no expert in Mac APIs and would love to learn and / or see any specific approaches you have in mind!