Struct SpinBoxStyleConfig 

pub struct SpinBoxStyleConfig {
    pub field: WidgetId,
    pub step_up: Option<WidgetId>,
    pub step_down: Option<WidgetId>,
    pub layout: ButtonLayout,
    pub is_focused: Signal<bool>,
    pub is_disabled: Signal<bool>,
}

Fields

field: WidgetId

Pre-built TextInputField subtree (already padded to the caller’s policy).

step_up: Option<WidgetId>

Pre-built up-step icon button. None when layout == Hidden.

step_down: Option<WidgetId>

Pre-built down-step icon button. None when layout == Hidden.

layout: ButtonLayout

Layout selector — Stacked puts the buttons in a divided vertical column to the trailing side of the field; Hidden drops the divider and button column entirely.

is_focused: Signal<bool>

Reactive focus signal — drives the border colour (focused → accent, otherwise default).

is_disabled: Signal<bool>

Reactive disabled signal — the AND of the SpinBox’s own enabled prop and every ancestor’s, via BuildContext::effective_enabled_signal. Drives the inert grey fill / outline. A SpinBox frames a TextInputField in neutral roles (SurfaceRole::Content, BorderRole::Default), and the disabled-role substitution in ColorProp::resolve only rewrites the accent family — so unlike an accent-filled Button, this control has to dim itself explicitly.