This commit drops halcyon's search widget in favour of using the same
widget as folio to share code. This also brings over its keyboard
navigation features.
search
This commit is a subset of
https://invent.kde.org/plasma/plasma-mobile/-/merge_requests/694 to add
keyboard navigation to the app drawer.
Pressing the arrow keys while in the app drawer will allow you to
navigate between the apps and the search bar, and going up will exit the
app drawer. Escape/Back is also supported for unfocusing the search bar
and exiting the view.
This also fixes an issue in the keyboard navigation on the search screen
where it wouldn't close when there are no search results.
This MR:
- Caps the maximum width of delegates and centers them
- Makes the search widget style match the app drawer search bar
- Adds section headers
- Uses rounded delegates
Having a global set margins and orientation (that were calculated from the panel containment) caused a lot of issues with the way bindings were evaluated across panels, and with high coupling.
Now use properties from within containments to determine shell margins instead, which removes the dependency on other containments for measurements. This allows us to get rid of TaskPanelControls as well!
Fixes: https://invent.kde.org/teams/plasma-mobile/issues/-/issues/198
Move from a C++ library + QML plugin to a QML plugin only for simplicity, since the homescreen switching architecture will be done from Plasma, and so use of the shell library only needs to be from QML.
