Optional ReadonlycontextOptionaldefaultOptionalpropagationOptional ReadonlysourceOptional ReadonlytypeOptionalpreventPrevents the default action associated with the event. If a default handler exists, it will not be executed.
OptionalstopStops the propagation of the event to further listeners. Subsequent listeners for the same event on the same EventSource will not be called.
fired for each key pressed on the grid (not while a cell is edited), before the default handling call preventDefault to handle the key yourself