Would there be a easy way to block sound out of loudspeakers when connected to bluetooth and headphones? like ringing and txt

I only want sound to come via headset or headphones.

As people out there for some strange reason want it to come out both and some do not.

Just thought a little widget or something could be made

Thank you for taking the time to reply on this.

There is a bug done but don't know if they are going to play with this or not. It used to work on previous firmware versions.