One of the most interesting things about Wayland is how it handles window focus, unlike X11, where focus stealing can be frustrating and even a security risk. Its main advantage is a mechanism that prevents focus stealing. The protocol that plays a role in this is known as "XDG Activation." This works by having an app request a unique token from the compositor. The compositor can create this token in response to user input. The new application then presents the token to get focus, which is grant...