Struct SemanticsNode 

pub struct SemanticsNode {

    pub id: NodeId,
    pub parent: Option<NodeId>,
    pub role: SemanticsRole,
    pub bounds: Rect,
    pub flags: SemanticsFlags,
    pub test_id: Option<String>,
    pub active_descendant: Option<NodeId>,
    pub pos_in_set: Option<u32>,
    pub set_size: Option<u32>,
    pub label: Option<String>,
    pub value: Option<String>,
    pub extra: SemanticsNodeExtra,
    pub text_selection: Option<(u32, u32)>,
    pub text_composition: Option<(u32, u32)>,
    pub actions: SemanticsActions,
    pub labelled_by: Vec<NodeId>,
    pub described_by: Vec<NodeId>,
    pub controls: Vec<NodeId>,
    pub inline_spans: Vec<SemanticsInlineSpan>,
}

Fields

id: NodeId

parent: Option<NodeId>

role: SemanticsRole

bounds: Rect

flags: SemanticsFlags

test_id: Option<String>

Debug/test-only identifier for deterministic automation.

This MUST NOT be mapped into platform accessibility name/label fields by default.

active_descendant: Option<NodeId>

When this node retains actual keyboard focus but another descendant is the current “active item” (e.g. composite widgets using aria-activedescendant), this points to that active descendant node.

pos_in_set: Option<u32>

1-based position of this node within a logical collection (e.g. listbox/menu items).

This is used to support accessible large/virtualized collections where only a window of items is present in the semantics snapshot.

set_size: Option<u32>

Total number of items in the logical collection that this node belongs to.

This is used to support accessible large/virtualized collections where only a window of items is present in the semantics snapshot.

label: Option<String>

Human-readable name/label for assistive technologies.

value: Option<String>

Value text, typically for text fields and sliders.

extra: SemanticsNodeExtra

text_selection: Option<(u32, u32)>

Text selection in UTF-8 byte offsets within value (ADR 0071).

This is (anchor, focus) to preserve selection direction for assistive technologies.

text_composition: Option<(u32, u32)>

IME composition range in UTF-8 byte offsets within value (ADR 0071).

This is a best-effort signal for accessibility and may be omitted by implementations that cannot represent composition distinctly.

actions: SemanticsActions

Supported actions for assistive technologies and automation.

labelled_by: Vec<NodeId>

Nodes which provide this node’s accessible name.

This is a portable approximation of relations such as aria-labelledby.

described_by: Vec<NodeId>

Nodes which provide this node’s accessible description.

This is a portable approximation of relations such as aria-describedby.

controls: Vec<NodeId>

Nodes which this node controls.

This is a portable approximation of relations such as aria-controls.

inline_spans: Vec<SemanticsInlineSpan>

Inline semantics spans within this node’s value (v1 metadata-only surface).

Implementations

impl SemanticsNode

pub fn validate(&self) -> Result<(), SemanticsValidationError>

Trait Implementations

impl Clone for SemanticsNode

fn clone(&self) -> SemanticsNode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SemanticsNode

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

Formats the value using the given formatter.