keyboard property
How tall the software keyboard was when this frame was taken, in logical pixels, or null when it was down — which is nearly every step.
A note about the screen rather than a node in it. A real phone's
keyboard is not in the app's widget tree either, and putting one in would
mean a keyboard in every find.text, every semantics audit and every
transcript. The only reason to record it at all is that a reader looking
at a shot with the bottom third missing cannot otherwise tell why.
Implementation
final double? keyboard;