Protocol extensions using libweston core functions

[adlo]

I wrote a compositor with a window switcher protocol. The core libweston-desktop function implementations such as surface_added are in shell.c, while the window switcher code is in window-switcher.c.

When a new window is opened (a new surface is added), the window switcher will need to be updated with information about this new window. However, the surface_added function in shell.c doesn't know about the window switcher protocol.

What is the best way to connect these two parts of the code?

Regards

adlo