Struct SelectionRange 

pub struct SelectionRange {
    pub anchor: usize,
    pub head: usize,
    pub affinity: Affinity,
}

One selection range: anchor is where the selection started, head is the live end (where the caret glyph renders). anchor == head is a plain collapsed caret — the overwhelmingly common case for TextInput/TextArea today; multiple SelectionRanges (multi-cursor) is a real, supported shape nothing here forbids, reserved for a future code-editor-class widget (D116 — not built by this phase).

Fields

anchor: usize

head: usize

affinity: Affinity

Implementations

impl SelectionRange

pub fn collapsed_at(pos: usize) -> Self

pub fn collapsed(&self) -> bool

pub fn normalized(&self) -> (usize, usize)

(start, end) with start <= end — the shape every string-slicing call site wants, regardless of which direction the user selected in.

Trait Implementations

impl Clone for SelectionRange

fn clone(&self) -> SelectionRange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SelectionRange

impl Debug for SelectionRange

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

Formats the value using the given formatter.

impl PartialEq for SelectionRange

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SelectionRange