Iterate over State of a widget?

[PhilippMDoerner]

I would like to iterate over the state of a widget.

The idea would be to iterate over all fields of a widget and insert a Dateentry Widget based for each field.
Basically something like this:

viewable App:
  ... some fields..
  
method view(app: AppState): Widget =
  result = gui:
    Window:
      defaultSize = (600, 100)
      Box(orient = OrientY, spacing = 6, margin = 12):
        for fieldName, fieldValue in app.fields:
          ActionRow:
            title = fieldName
            when fieldValue is SomeNumber:
              NumberEntry {.addSuffix.}:
                value = fieldValue
                proc changed(value: float) =
                  fieldValue = value
            
            when fieldValue is string:
              Entry {.addSuffix.}:
                text = fieldValue
                proc changed(text: string) =
                  fieldValue = text
            
            when fieldValue is bool:
              Switch {.addSuffix.}:
                state = fieldValue
                proc changed(state: bool) =
                  fieldValue = state

brew(gui(App()))

But I don't think I can iterate over an instance of AppState?
At least none of the "usual" suspects for iterators seem to be available.

[PhilippMDoerner]

Can.L just answered that in discord.

It's perfectly doable, I just entirely forgot that AppState is a ref-type.
So it just needs a deref in there:

name, value in app[].fieldPairs