Struct ItemA11yDecorations 

#[non_exhaustive]
pub struct ItemA11yDecorations {
    pub parent: Option<A11yNode>,
    pub adopted: Vec<A11yNode>,
    pub relations: Vec<(A11yNode, A11yRelation, A11yNode)>,
    pub live: Option<Live>,
    pub landmark: Option<Role>,
    pub categories: Vec<A11yCategory>,
}

The per-item slice of the logical accessibility tree, harvested by Scene::take and re-attached by Scene::restore.

Both directions of every edge, because a removal cuts both — see the module docs. A restore re-attaches only the edges whose other endpoint is still alive; an edge to something that has since been removed is dropped, because re-inserting it would name a node the AT walker cannot resolve.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

parent: Option<A11yNode>

The node this item was AT-parented under (Scene::set_a11y_parent).

adopted: Vec<A11yNode>

Nodes that were AT-parented under this item and survived its removal. remove re-roots them at the view root; a restore re-adopts each one that still exists.

relations: Vec<(A11yNode, A11yRelation, A11yNode)>

Every relation with this item at either endpoint, in declaration order. A relation between two removed items is recorded once, on the from endpoint’s salvage.

live: Option<Live>

Live-region politeness (Scene::set_a11y_live).

landmark: Option<Role>

Landmark role (Scene::set_a11y_landmark).

categories: Vec<A11yCategory>

Rotor / quick-nav categories (Scene::set_a11y_categories).

Implementations

impl ItemA11yDecorations

pub fn is_empty(&self) -> bool

Whether this item carried any logical-AT decoration at all. A restore of an undecorated item touches none of the scene’s AT maps.

Trait Implementations

impl Debug for ItemA11yDecorations

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

Formats the value using the given formatter.

impl Default for ItemA11yDecorations

fn default() -> ItemA11yDecorations

Returns the “default value” for a type.