Ways to know when remote control window (map) is open or closed

[Matryoshka]

Hi people

As the subject goes how does one know when the remote control window is opened/closed?
Is there an event for that? If there is not do someone know some workarounds that are not bad for performance?

Thanks

[Osmo]

Switching to remote view puts the player in a different controller. It also raises an event on_player_controller_changed

[Matryoshka]

Switching to remote view puts the player in a different controller. It also raises an event on_player_controller_changed

Thank you. I think that exactly what I could use.