SourceList: use key controller

[danirabbit]

No description provided.

[jeremypw]

The code is good, but in practice this feature is almost impossible to use because it hard to get keyboard focus into the sidebar. The only way I found was to start a rename using right-click and then cancel it - the keyboard focus then remains in the sidebar.

If it is intended to make the sidebar (and other widgets other than the textview and terminal) operable with the keyboard alone, in a discoverable way, then there is work to do.

[jeremypw]

Files uses <Control><Tab> to switch focus from view to sidebar but this does not work in Code as this shortcut is used by the textview.

[danirabbit]

Yeah I had a hard time testing this and I think the keyboard navigation experience definitely needs to be addressed. My goal here however is just to prepare for GTK4 porting

[jeremypw]

OK, it sounds like the goal is that the sidebar should be accessible/controllable with the keyboard but that can be achieved later.