tree 575a9da5447a7027fc70e93b4b904afd5f49f65b
parent 74484f4a99e6567d1b0d302c66593767f5de144d
author Fengjiang Li <fengjial@google.com> 1673569258 -0800
committer Fengjiang Li <fengjial@google.com> 1674604306 -0800

Predictive back: widget to all apps

This CL adds a layer of OnBackPressedHanlderRouter to Launcher:
1. 4 OnBackPressedHandler(s) are added in such order: auto cancel action mode handler, drag handler, view handler and state handler
2. first handler who can handle back will handle the entire back gesture
3. Let WidgetsFullSheet to handle widget to all apps transition

Bug: b/260956481
Test: manual
Change-Id: Idbce3dcec746226dd68aaabaddc8fe01334e9673