Struct TextSelection 

pub struct TextSelection {
    pub anchor: usize,
    pub head: usize,
}

A (anchor, head) byte-index pair representing the selection in a text field. head is the caret position; the selection covers min(anchor, head)..max(anchor, head). When anchor == head the selection is collapsed and the field shows just a caret.

Both indices are byte offsets into the source string and are clamped to a UTF-8 grapheme boundary by every method that reads or writes them — callers can safely poke them directly.

Fields

anchor: usize

head: usize

Implementations

impl TextSelection

pub const fn caret(head: usize) -> Self

Collapsed selection at byte offset head.

pub const fn range(anchor: usize, head: usize) -> Self

Selection from anchor to head. Either order is valid; the widget renders min..max as the highlighted band.

pub fn ordered(self) -> (usize, usize)

(min, max) byte offsets, ordered.

pub fn is_collapsed(self) -> bool

True when the selection is collapsed (anchor == head).

Trait Implementations

impl Clone for TextSelection

fn clone(&self) -> TextSelection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TextSelection

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

Formats the value using the given formatter.

impl Default for TextSelection

fn default() -> TextSelection

Returns the “default value” for a type.

impl PartialEq for TextSelection

fn eq(&self, other: &TextSelection) -> 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 Copy for TextSelection

impl Eq for TextSelection

impl StructuralPartialEq for TextSelection