Screen slide animation with states and transitions, setting a default transition

[RudolfVonKrugstein]

Hey,

I have an app with several screens, which each have an associated state. Now I want to have a slide animation between screens.

It is actually not that difficult, I do it like this:

states: [
    State {
        name: "start"
    },
    State {
        name: "login"
    }
]
transitions: [
    SlideLeftTransition {
        from: "start"
        to: "login"
        inTarget: loginscreen
        outTarget: startscreen
    }
]

SlideLeftTransition is the transition taking care of sliding the screens. Now if I have 10 screens, I would need to define 9+8+7+6+5+4+3+2+1=45 transitions.

So I want to define a default transition!

SlideLeftTransition {
        inTarget: screen_of_old_state
        outTarget: screen_of_new_state
    }

But I am missing 2 ingridients:

1. I have to associate a state with a screen, in a way that I can access the screen from a generic transition.
2. I have to know from which state/screen I am coming.

How can this be done?

Thanks!