sw: add update button to a11y check sidebar when using LOKitHEADmaster

Running the a11y check when the sidebar gets enable takes some
time, because populating the widgets is quite expensive. Instead
of running the check right away, add a "update" button to the
sidebar, that needs to be clicked first to start running the
accessibility check. This does not check the behavior of the
sidebar in desktop LibreOffice.

Also change the populate call to be async, which helps a bit to
make the UI interaction more fluent, but doesn't fix the issue.

Change-Id: Ia04f4a5fbae952035c1b8d4d7c56211e061d8251
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/167855
Reviewed-by: Caolán McNamara <caolan.mcnamara@collabora.com>
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
(cherry picked from commit 5e6d7927e27551aa63a2b22134b1a9ee6408d39a)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/168784
Tested-by: Jenkins
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

0 files changed, 0 insertions, 0 deletions