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PendingA11yUpdate

Struct PendingA11yUpdate 

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pub struct PendingA11yUpdate {
    pub boxed: Option<Box<dyn Any + Send + Sync>>,
}
Expand description

Latest AccessKit tree update produced by the sync_a11y_tree system.

  • Written each TickStage::A11ySync tick.
  • Consumed by lumen-window-winit inside RedrawRequested; that consumer calls Adapter::update_if_active(...) with this payload instead of re-walking the world.
  • take() drains the value so the next tick must build a fresh one.

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§boxed: Option<Box<dyn Any + Send + Sync>>

None after a consumer takes the update; Some after the system fills it. Type-erased as a Box<dyn Any> so lumen-core (which has no accesskit dep) can host the resource. Producers downcast to Box<accesskit::TreeUpdate> on push and pop. See lumen-a11y-accesskit for the typed wrapper helpers.

Trait Implementations§

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impl Component for PendingA11yUpdate
where Self: Send + Sync + 'static,

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const STORAGE_TYPE: StorageType = bevy_ecs::component::StorageType::SparseSet

A constant indicating the storage type used for this component.
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type Mutability = Mutable

A marker type to assist Bevy with determining if this component is mutable, or immutable. Mutable components will have Component<Mutability = Mutable>, while immutable components will instead have Component<Mutability = Immutable>. Read more
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fn register_required_components( _requiree: ComponentId, required_components: &mut RequiredComponentsRegistrator<'_, '_>, )

Registers required components. Read more
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fn clone_behavior() -> ComponentCloneBehavior

Called when registering this component, allowing to override clone function (or disable cloning altogether) for this component. Read more
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fn relationship_accessor() -> Option<ComponentRelationshipAccessor<Self>>

Returns [ComponentRelationshipAccessor] required for working with relationships in dynamic contexts. Read more
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fn on_add() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_add [ComponentHook] for this Component if one is defined.
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fn on_insert() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_insert [ComponentHook] for this Component if one is defined.
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fn on_discard() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_discard [ComponentHook] for this Component if one is defined.
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fn on_remove() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_remove [ComponentHook] for this Component if one is defined.
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fn on_despawn() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_despawn [ComponentHook] for this Component if one is defined.
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fn map_entities<E>(_this: &mut Self, _mapper: &mut E)
where E: EntityMapper,

Maps the entities on this component using the given EntityMapper. This is used to remap entities in contexts like scenes and entity cloning. When deriving Component, this is populated by annotating fields containing entities with #[entities] Read more
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impl Debug for PendingA11yUpdate

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for PendingA11yUpdate

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fn default() -> PendingA11yUpdate

Returns the “default value” for a type. Read more
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impl Resource for PendingA11yUpdate
where Self: Send + Sync + 'static,

Auto Trait Implementations§

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<C> Bundle for C
where C: Component,

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fn component_ids( components: &mut ComponentsRegistrator<'_>, ) -> impl Iterator<Item = ComponentId> + use<C>

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fn get_component_ids( components: &Components, ) -> impl Iterator<Item = Option<ComponentId>>

Return a iterator over this Bundle’s component ids. This will be None if the component has not been registered.
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impl<C> BundleFromComponents for C
where C: Component,

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unsafe fn from_components<T, F>(ctx: &mut T, func: &mut F) -> C
where F: for<'a> FnMut(&'a mut T) -> OwningPtr<'a>,

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impl<C> DynamicBundle for C
where C: Component,

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type Effect = ()

An operation on the entity that happens after inserting this bundle.
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unsafe fn get_components( ptr: MovingPtr<'_, C>, func: &mut impl FnMut(StorageType, OwningPtr<'_>), ) -> <C as DynamicBundle>::Effect

Moves the components out of the bundle. Read more
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unsafe fn apply_effect( _ptr: MovingPtr<'_, MaybeUninit<C>>, _entity: &mut EntityWorldMut<'_>, )

Applies the after-effects of spawning this bundle. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FromWorld for T
where T: Default,

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fn from_world(_world: &mut World) -> T

Creates Self using default().

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> IntoResult<T> for T

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fn into_result(self) -> Result<T, RunSystemError>

Converts this type into the system output type.
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> ConditionalSend for T
where T: Send,