How to change element style based on events?

[sukhmel]

I want to be able to change button colour upon validation of some value, simplest case is change colour upon each click of this button. It looks like there is a way using style_pass, but that requires me to have StyleCx that I can't quite understand where to get. Maybe this is an incorrect approach, but then my question is: what is the intended way to update style when something changes in the data?

style accepts Fn so I expected that I might be able to call request_style on a ViewId of the button, but that also didn't seem to work.

Maybe there is a way to tie my state and app state, but this is also beyond me at the moment.

[jrmoulton]

If you use a signal by calling .get() or .with() in the style function it will automatically recompute and reapply the style when the data in the signal chagnes.

[sukhmel]

Wow, I will try that, I wasn't using a signal in style

[sukhmel]

I tried, and it works. This was a bit surprising to me, since I didn't notice that SignalGet also subscribes to the current running effect.

Now I will have to think about how to better change architecture to make use of signals instead of a common state 🤔 or maybe I should find a way to subscribe to the effect

[sukhmel]

I can give a bit of a feedback about why it was so confusing to me: when creating a button I should pass Signal to button(...), if I call for GetSignal::get there it will never update. Now this makes sense, but earlier I expected to be able to pass Signal to color(...) which is not possible. GetSignal::get is a bit too arcane for me, albeit better now, thanks to your help