Using an FnMut in a button closure?

[ezntek]

I need to have a button that mutates some data, under the context of a state manager. I wrote a simple state manager that works kind of like a state machine with changes in state happening through navigating the UI, and some functions related to mutating the data requires a mutable reference to self, which requires a mutable variable and a mutable reference, which cannot be obtained inside a plain Fn. Is there a way around this:

Note: I did try wrapping it in an Rc of Cell, it did work until I encountered closure may outlive the current function, but it borrows \state manager variable name`, which is owned by the current function.Usingmove would work, but one would need to make a different clone of theRc` per closure, which is kind of clunky.