What are the counterparts to the (mouseenter) and (mouseleave) events in Angular 7 when it comes to tabbing there and back?

(focus) will work when tabbing in and (blur) and (focusout) when tabbing out, but both of those events will run in a loop as long as you sit on the control. (keydown.Tab) will run just once when leaving, but I do not know how to run an event just once upon entry.