Struct AccessibilityId 

pub struct AccessibilityId(pub u64);

A stable identifier for accessibility nodes.

This ID is generated based on the component’s position in the tree and optional user-provided keys. It remains stable across frames as long as the UI structure doesn’t change.

Tuple Fields

0: u64

Implementations

impl AccessibilityId

pub fn new(id: u64) -> Self

Creates a new accessibility ID from a u64.

pub fn to_accesskit_id(self) -> AccessKitNodeId

Converts to AccessKit’s NodeId.

pub fn from_accesskit_id(id: AccessKitNodeId) -> Self

Creates from AccessKit’s NodeId.

pub fn from_component_node_id(node_id: NodeId) -> Self

Generates a stable ID from an indextree NodeId.

indextree uses an arena-based implementation where NodeIds contain:

• A 1-based index into the arena
• A stamp for detecting node reuse

In Tessera’s immediate-mode model, the component tree is cleared and rebuilt each frame, so there’s no node reuse within a frame. This makes the index stable for the current tree state, which is exactly what AccessKit requires (IDs only need to be stable within the current tree).

Stability Guarantee

The ID is stable within a single frame as long as the UI structure doesn’t change. This matches AccessKit’s requirement perfectly.

Trait Implementations

impl Clone for AccessibilityId

fn clone(&self) -> AccessibilityId

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AccessibilityId

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

Formats the value using the given formatter.

impl Hash for AccessibilityId

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for AccessibilityId

fn eq(&self, other: &AccessibilityId) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for AccessibilityId

impl Eq for AccessibilityId

impl StructuralPartialEq for AccessibilityId