Struct Semantics 

pub struct Semantics {
    pub typ: WidgetType,
    pub label: String,
    pub value: Option<f64>,
    pub selected: Option<bool>,
    pub enabled: bool,
}

The semantic payload attached to a painted element — what role it plays, the human/agent-readable label, an optional numeric value, and whether it is the current selection. This is the data a screen reader announces and a robot driver / get_by_label retrieves.

Fields

typ: WidgetType

AccessKit role (egui maps WidgetType → accesskit::Role).

label: String

Stable, human-readable label. MUST be unique within a surface (FC-5).

value: Option<f64>

Optional numeric value (a grid cell number, a bar height, a node count, a yaw angle). Becomes the AccessKit numeric_value.

selected: Option<bool>

Whether this element is the current selection (a selected cell/row/node).

enabled: bool

Whether the element is enabled/interactive.

Implementations

impl Semantics

pub fn new(typ: WidgetType, label: impl Into<String>) -> Self

A labelled element of an arbitrary role (no value, no selection).

pub fn button(label: impl Into<String>) -> Self

A clickable button (e.g. a painted graph/DAG node, a chip, a tile).

pub fn image(label: impl Into<String>) -> Self

A value-bearing image/region summary (e.g. a whole map/plot pane).

pub fn list_item(label: impl Into<String>, selected: bool) -> Self

A selectable list/row item (file row, command-palette row, menu item).

pub fn value(self, v: f64) -> Self

Attach a numeric value (chainable). Carried as AccessKit numeric_value, so get_by_label(..).numeric_value() reads it back exactly.

pub fn selected(self, sel: bool) -> Self

Mark this element as selected / not (chainable).

pub fn enabled(self, en: bool) -> Self

Mark this element enabled / disabled (chainable).

pub fn widget_info(&self) -> WidgetInfo

Build the egui WidgetInfo this semantics maps to.

Trait Implementations

impl Clone for Semantics

fn clone(&self) -> Semantics

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Semantics

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

Formats the value using the given formatter.

impl PartialEq for Semantics

fn eq(&self, other: &Semantics) -> 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 StructuralPartialEq for Semantics