Struct NativeSegmentedView 

pub struct NativeSegmentedView { /* private fields */ }

A real segmented control rendered from pure Rust — UISegmentedControl on iOS/iPadOS, NSSegmentedControl on macOS, and a frust-drawn refusal banner everywhere else (Android included: see [SEGMENTED_ARM]). A controlled component, like NativeSwitchView: the app owns selected, and a tap only ever arrives through Self::on_select as a requested index. Build one with native_segmented.

Implementations

impl NativeSegmentedView

pub fn enabled(self, enabled: bool) -> Self

UIControl.enabled / NSControl.enabled — default true.

pub fn momentary(self, momentary: bool) -> Self

Momentary tracking: a tap flashes its segment and reports it through Self::on_select without leaving it selected (a toolbar of actions rather than a choice). Default false.

pub fn content_description(self, label: impl Into<String>) -> Self

The VoiceOver label.

pub fn size(self, width: f64, height: f64) -> Self

Explicit slot size — see [resolve_size]’s doc for the no-call fallback.

pub fn on_select(self, handler: impl Fn(usize) + Send + Sync + 'static) -> Self

Fires with the requested segment index on a user tap — the app confirms (or rejects) it by feeding selected back through the next build, the controlled-component contract every interactive frust widget follows. Never fires on a target with no segmented arm.

Trait Implementations

impl Clone for NativeSegmentedView

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Component for NativeSegmentedView

type State = u64

The retained local state this component owns across rebuilds.

fn init(&self) -> SlotId

Create the component’s initial local state. Runs exactly once, when the ComponentWidget is first built, under the component’s Owner (so on_cleanup/provide_context registered here bind to that owner).

fn build(&self, state: &mut SlotId) -> AnyView<SlotId>

Produce the component’s subtree from its current local state.

impl<Outer: 'static> View<Outer> for NativeSegmentedView

type Element = ComponentWidget<NativeSegmentedView>

The retained widget this view produces.

fn build(&self, ctx: &mut BuildCtx<'_>) -> Self::Element

Materialise a fresh widget for this view.

fn rebuild( &self, prev: &Self, element: &mut Self::Element, ctx: &mut BuildCtx<'_>, ) -> ChangeFlags

Reconcile prev (the previous view of the same type) against the live element, mutating it in place and reporting what changed.

fn teardown(&self, element: &mut Self::Element, ctx: &mut BuildCtx<'_>)

Tear down element when this view is being removed.

fn message(&self, _element: &mut Self::Element, _state: &mut State)

Deliver an event message to this view, mutating application state.