One solution is in the answer :)
If you look the View API for
change resolution, you will see that it's emit an event The description states the following
The old value. To get the new value use e.target.get(e.key) where e is the event object.
Just applied the recipe to get what you want.
I've also considered another approach using
movend map events.
Both provided solutions are not the "silver bullet" as you will see in this demo
To better understand, in the demo, open the browser debugger (I use some
console.log) and look at source comments. I explained here the issues I got with both approaches.
There is maybe a better way but I did not found it at the moment.