The keyboard the input currently asks for.
Whether an edit session is live; cancel and commit are disabled otherwise.
Whether the input has focus, which on a phone is whether a keyboard is up.
Discard the edit.
Keep the edit and stop.
Open the date picker; the picked date goes into the field.
Commit and move the active cell down, then keep typing.
Open the letters or the number keyboard on the field.
Commit and move the active cell right, then keep typing.
The bar cannot edit (protected cell, read-only workbook).