commit 8a8f11728064074477e0fb8b1ff5e41ecf6528d9
author Bill Lin <lbill@google.com> Mon Apr 19 14:10:03 2021 +0800
committer Bill Lin <lbill@google.com> Thu Apr 22 08:12:29 2021 +0800
tree 8dee1ef20845f99e1a292ac210acd6617a3da591
parent 1027fb5c21b9ae931feff81c29427cccb3d8d77b

1/ Add OneHandedState to manage the transition flow

1) Define STATEs flags for OHM CUJ:
    STATE_NONE               (0)
    STATE_ENTERING           (1)
    STATE_ACTIVE             (2)
    STATE_EXITING            (3)

STATE_NONE->STATE_ENTERING->STATE_ACTIVE->STATE_EXITING

- Default = STATE_NONE
- When user trigger OHM        = STATE_ENTERING
- When user is in OHM          = STATE_ACTIVE
- When user exit OHM           = STATE_EXITING
- When user finish exiting OHM = STATE_NONE

2) Unbound one handed mode state from OHMDAOrganzier
- Move isInOneHandedMode() to OneHandedState

Test: atest OneHandedStateTest
Test: atest WMShellUnitTests
Test: manual test
Bug: 185558765
Change-Id: Ida2f23da6c4df9cbcf6903ffc9ad07fcfc73bbcb