Touches are ignored as soon as we want to start system drag so that system drag can start sooner (i.e. before any AbstractFloatingView animations finish). This approach utilizes ViewTreeObserverWrapper's compute insets listener by temporarily setting the touch region to empty. The taskbar window remains fullscreen until the drag finishes so the touch region is reset at the right point. Similarly, the all apps window is kept open during its drag operations until the drag finishes. System drag state is now exposed through the drag controller to skip predrag.
Test: Manual by dragging to split screen and triggering dismissal
animation from both windows. Verified predrag works.
Fix: 221104066
Fix: 220070070
Change-Id: I424106269c841f58cbe5338d30b6c33fbd889019
All apps should display below system UI components such as the
notification tray and power menu, so an overlay window is more
appropriate. As a result, all apps has a separate window activity
context, but some properties are delegated to the taskbar activity
context. Taskbar should also be stashed while all apps is open.
Change-Id: I593457708779d84a0ab8b949a966d247d0a2e1b7
Test: Manual
Bug: 216843189
Fix: 217383817
(cherry picked from commit 473b980bf9)
