Fix issue #2493497: Stuck in the Emergency dialer - Home/Back keys doesn't work
This was another case of not updating the window focus when needed, this time
when the lock screen was hidden.
Also re-arrange the layout/animate flow to address issues where you would see
a flicker of whatever was behind the lock screen when showing a new activity that
hides the lock screen. This was because we were deciding to hide the lock screen
during the layout phase, which meant we had to do it without considering whether
it had drawn. So we could hide the lock screen before the window is shown for the
first time after being drawn. Now we can do this in the policy during animate, so
we can wait until the window is drawn and actually being shown.
The flow in perform layout is thus significantly changed, where the layout and
animate loops are both under the same repeating loop. The actual flow from this
should be the same, but it now allows the policy to request a new layout after
the animation loop is done. This actually cleans up a number of things in this
code as the complexity has increased.
Finally this includes a change to the ui mode manager when switching modes, to do
the resource configuration switch at a different time. This makes transitions
between modes much cleaner (though not yet perfect).
Change-Id: I5d9e75c1e79df1106108dd522f8ffed6058ef82b
Only the system can enable the car mode and the system should
already have appropriate permissions.
But since we wanna allow all other apps to disable the car mode
again, we don't want to enforce them to specify the DISABLE_KEYGUARD
permission in their manifest.
Change-Id: I1ad244a98d65b7193ea9817bff8406cfc2bce6f3
Extract all UI behavior from dock observer and ACTION_DOCK_EVENT.
Also introduce a desk type to go along with the car type all through
the resource system, since we now need to have corresponding high-level
broadcasts for desk dock mode. As part of that I also reworked some
of the logic for switching modes to all funnel through a single
update() call that looks all of the current state to decide what to
do next, and fixed various locking issues.
In addition I found there were bugs in the configuration change
handling causing us to only switch into the car mode config and
then never get out of it. Unfortunately now that we are actually
changing the configuration for each mode change, the transitions
between them are really crummy as we restart all kinds of
activities. :(
