Fixed a problem where the key up for the ALT or META key was not
delivered to the task switcher dialog because it was deemed
to be inconsistent with the window's observed state. Consequently
the dialog would not be dismissed when the key was released.
Moved global hotkey handling for META+* shortcuts and ALT/META-TAB
into the window manager policy's interceptKeyBeforeDispatching
method. This change prevents applications from hijacking these
keys.
The original idea was that these shortcuts would be handled only
if the application did not handle them itself. That way certain
applications, such as remote desktop tools, could deliberately
override some of these less important system shortcuts.
Unfortunately, that does make the behavior inconsistent across
applications. What's more, bugs in the onKeyDown handler of
applications can cause the shortcuts to not work at all, for
no good reason.
Perhaps we can add an opt-in feature later to enable specific
applications to repurpose these keys when it makes sense.
Bug: 5720358
Change-Id: I22bf17606d12dbea6549c60d20763e6608576cf7
68b909d8ac