tree eb3466b1b14225cec1d89468849383d9f3d87bfd
parent e0c54513bdbe463d8add05fb48bf74ffa1991873
author Michael Wright <michaelwr@google.com> 1458690733 -0700
committer The Android Automerger <android-build@google.com> 1461294511 -0700

Add new MotionEvent flag for partially obscured windows.

Due to more complex window layouts resulting in lots of overlapping
windows, the policy around FLAG_WINDOW_IS_OBSCURED has changed to
only be set when the point at which the window was touched is
obscured. Unfortunately, this doesn't prevent tapjacking attacks that
overlay the dialog's text, making a potentially dangerous operation
seem innocuous. To avoid this on particularly sensitive dialogs,
introduce a new flag that really does tell you when your window is
being even partially overlapped.

We aren't exposing this as API since we plan on making the original
flag more robust. This is really a workaround for system dialogs
since we generally know their layout and screen position, and that
they're unlikely to be overlapped by other applications.

Bug: 26677796
Change-Id: I9e336afe90f262ba22015876769a9c510048fd47