Struct A11yRelations 

pub struct A11yRelations {
    pub labelled_by: SmallVec<[Entity; 2]>,
    pub described_by: SmallVec<[Entity; 2]>,
    pub controls: SmallVec<[Entity; 2]>,
    pub owns: SmallVec<[Entity; 2]>,
}

Cross-entity accessibility relations. Mirrors GTK 4 GtkAccessibleRelation.

• Empty fields are heap-free thanks to [smallvec::SmallVec].
• Translation layer turns each Entity into a NodeId via the existing entity_to_node mapping.

Fields

labelled_by: SmallVec<[Entity; 2]>

Entities whose labels describe this one (aria-labelledby).

described_by: SmallVec<[Entity; 2]>

Entities whose content elaborates on this one (aria-describedby).

controls: SmallVec<[Entity; 2]>

Entities whose content this one controls (aria-controls).

owns: SmallVec<[Entity; 2]>

Entities this one owns logically (aria-owns); used for portal targets and ARIA re-parenting.

Implementations

impl A11yRelations

pub fn is_empty(&self) -> bool

true when every relation field is empty.

Trait Implementations

impl Clone for A11yRelations

fn clone(&self) -> A11yRelations

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Component for A11yRelations

where Self: Send + Sync + 'static,

const STORAGE_TYPE: StorageType = bevy_ecs::component::StorageType::Table

A constant indicating the storage type used for this component.

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>.

fn register_required_components( _requiree: ComponentId, required_components: &mut RequiredComponentsRegistrator<'_, '_>, )

Registers required components.

fn clone_behavior() -> ComponentCloneBehavior

Called when registering this component, allowing to override clone function (or disable cloning altogether) for this component.

fn relationship_accessor() -> Option<ComponentRelationshipAccessor<Self>>

Returns [ComponentRelationshipAccessor] required for working with relationships in dynamic contexts.

fn on_add() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_add [ComponentHook] for this Component if one is defined.

fn on_insert() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_insert [ComponentHook] for this Component if one is defined.

fn on_discard() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_discard [ComponentHook] for this Component if one is defined.

fn on_remove() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_remove [ComponentHook] for this Component if one is defined.

fn on_despawn() -> Option<for<'w> fn(DeferredWorld<'w>, HookContext)>

Gets the on_despawn [ComponentHook] for this Component if one is defined.

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]

impl Debug for A11yRelations

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

Formats the value using the given formatter.

impl Default for A11yRelations

fn default() -> A11yRelations

Returns the “default value” for a type.