Enum SemanticsWidgetRole 

pub enum SemanticsWidgetRole {
    Button,
    Checkbox,
    Switch,
    RadioButton,
    Tab,
    Image,
    Header,
}

What kind of control a node is, as screen readers announce it.

This is Compose’s SemanticsProperties.Role (Modifier.semantics { role = Role.RadioButton }), not a description of where the node sits in the tree. A screen reader turns it into the trailing noun it speaks after the label — TalkBack says “CAMPAIGN, radio button, selected” — and into the on/off wording it uses for a switch. Compose keeps this separate from the node’s structural kind for the same reason Cranpose does: a Row that happens to be clickable is still a row, and a drawn ring segment that is a radio button has no layout node of its own at all.

Variants

Button

Checkbox

Switch

RadioButton

Tab

Image

Header

Compose’s heading(), which is a property rather than a Role, but reaches the platform through the same field on every backend Cranpose targets (AccessibilityNodeInfo.setHeading, Role::Heading, <h*>/UIAccessibilityTraitHeader).

Trait Implementations

impl Clone for SemanticsWidgetRole

fn clone(&self) -> SemanticsWidgetRole

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SemanticsWidgetRole

impl Debug for SemanticsWidgetRole

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

Formats the value using the given formatter.

impl Eq for SemanticsWidgetRole

impl Hash for SemanticsWidgetRole

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 SemanticsWidgetRole

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SemanticsWidgetRole