Struct StackView 

pub struct StackView<State: 'static> { /* private fields */ }

A declarative z-ordered stack. See the module docs.

Implementations

impl<State: 'static> StackView<State>

pub fn child<V: View<State>>(self, view: V) -> Self

Append a child on top of the existing ones. Accepts any View.

pub fn children<M>(self, children: impl ViewSeq<State, M>) -> Self

Append every element of children on top of the existing ones, in order.

Accepts any ViewSeq (Vec, array, tuple, Option, nested, or views(iter)); tuples are positional and a None element drops its slot.

pub fn when(self, cond: bool, f: impl FnOnce(Self) -> Self) -> Self

Apply f to the builder only when cond is true.

pub fn when_some<T>( self, opt: Option<T>, f: impl FnOnce(Self, T) -> Self, ) -> Self

Apply f with the contained value when opt is Some.

Trait Implementations

impl<State: 'static> View<State> for StackView<State>

type Element = StackWidget

The retained widget this view produces.

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

Materialise a fresh widget for this view.

fn rebuild( &self, prev: &Self, element: &mut StackWidget, 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 StackWidget, 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.