Allow enabled accessibility service to toggle tocuh exploration after an upgrade to JellyBean.
1. Before JellyBean touch exploration was a global setting controlled by the user via
the UI. However, if the enabled accessibility services do not handle touch exploration
mode, enabling it makes no sense. Therefore, in JellyBean the services request touch
exploration mode and the user is presented with a dialog to allow that and if she
does we store that in the database.
As a result of the above change a user that has enabled accessibility, touch
exploration, and some accessibility services running a pre-JellyBean system
version may lose touch exploration state, thus rendering the device useless unless
sighted help is provided, since the enabled service(s) are not in the list of
services to which the user granted a permission to put the device in touch explore
mode.
The fix is during a database upgrade to allow allow all enabled accessibility
services to toggle touch exploration provided accessibility and touch exploration
are enabled and no services can toggle touch exploration. Note that the user has
already manually enabled the services and touch exploration which means the she
has given consent to have these services work in touch exploration mode
bug:6996354
Change-Id: I0af2dc578cc4fbcc90043341035163b876978ab2
1 file changed
