Struct SliverFixedExtentListView 

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

A lazy list of equal-extent rows. See the module docs.

Implementations

impl<State: 'static> SliverFixedExtentListView<State>

pub fn on_near_start<F: Fn(&mut State) + 'static>( self, callback: F, threshold_px: f64, ) -> Self

Fire callback when the list’s start comes within threshold_px of the viewport’s leading edge — the “load older” edge, edge-triggered and rearmed as ListView::on_near_start is. See the module docs’ Near-edge callbacks.

pub fn on_near_end<F: Fn(&mut State) + 'static>( self, callback: F, threshold_px: f64, ) -> Self

Fire callback when the list’s end comes within threshold_px of the viewport’s trailing edge — the “load newer” edge, mirroring SliverFixedExtentListView::on_near_start (and ListView::on_near_end).

Trait Implementations

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

fn build(&self, _ctx: &mut BuildCtx<'_>) -> SliverFixedExtentListWidget

No layout has run yet, so there is no cache region to window against: nothing is materialised until the first rebuild after it.

type Element = SliverFixedExtentListWidget

The retained widget this view produces.

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