tree ac51334375712ab2e16146aa41ddd1448cd1fb7a
parent 0e3f0fca4d6f92bad552e846a04a8f0455704fe9
author Tao Zhou <taoalpha@google.com> 1600263315 +0200
committer Tao Zhou <taoalpha@google.com> 1600263315 +0200

Lock and unlock hovercard when its shown / hidden

When mouse over the hovercard, scroll inside hovercard
should be allowed, and scroll should not leak to background.
Once mouse left the hovercard, should resume.

Change-Id: I7a860e53f093c04e841e7a403962e0fd2e96f730