Struct SemAx 

#[non_exhaustive]
pub struct SemAx {

    pub id: u64,
    pub parent: u64,
    pub name: Option<String>,
    pub desc: Option<String>,
    pub url: Option<String>,
    pub value_text: Option<String>,
    pub states: u32,
    pub set: [u32; 2],
    pub level: u32,
    pub cell: [u32; 4],
    pub grid: [u32; 2],
    pub live: u32,
    pub range: Option<[f64; 4]>,
    pub sel: Option<[u32; 2]>,
}

What a semantic record says beyond its kind, label and value (Sem::ax): its setters fill it (ui.sem_rect(..).id64(7).parent(3).desc("..")); a web page’s accessibility tree needs it.

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.

id: u64

the record’s own id (below 2^62): a screen reader’s requests for it come back with it (ui.a11y_request_take); 0: none

parent: u64

the record it hangs under in the accessibility tree: one with this id64 (or, without one, this widget id) published in the same frame and window; 0: by its rectangle

name: Option<String>

its name when the label is something else (a text box’s or drop-down’s label is its text)

desc: Option<String>

a description beside the name (a hint, a page’s aria-describedby)

url: Option<String>

a link’s address

value_text: Option<String>

the text a screen reader says for a value (a slider’s “Monday”, a page’s aria-valuetext)

states: u32

AS_*

set: [u32; 2]

its position in its set (1-based) and the set’s size (0: unknown)

level: u32

the level of a heading, tree item, list item or row (1 the top; 0: none / the value)

cell: [u32; 4]

a cell’s row, column (0-based), row span, column span (spans 0: no place)

grid: [u32; 2]

a table’s rows and columns (0: unknown)

live: u32

LIVE_* (0: as its kind says)

range: Option<[f64; 4]>

value, minimum, maximum, step with fractions (a meter at 0.4 of 1); None: Sem::value / min / max

sel: Option<[u32; 2]>

a focused text box’s selection: anchor, caret in characters (a page’s field; the built-in boxes report theirs themselves)

Trait Implementations

impl Clone for SemAx

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SemAx

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

Formats the value using the given formatter.

impl Default for SemAx

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for SemAx

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SemAx