Following @taxi2se's recommendation. This is indeed a focus method, and
Widget already inherits from Focus.Object.
Ping @bu5hm4n who probably wants to adapt this further.
Ref T5363
This was proposed by Dave on the ML, I think it makes sense. Right now
the enum is just like the boolean, feature-wise, but it makes more sense
semantically (mode is not a bool) and allows for future extension (eg.
only apply orientation update for landscape vs. portrait modes).
There is absolutely zero testing for this in our existing codebase. Yay.
Summary:
focus_user and focus_object are similar classes. by merging them into
one mixin, we can maintain consistency.
Test Plan: make check
Reviewers: bu5hm4n
Subscribers: cedric, Jaehyun_Cho, woohyun, jpeg
Differential Revision: https://phab.enlightenment.org/D5734