Struct Selection 

pub struct Selection {
    pub anchor: Position,
    pub focus: Position,
}

Document-level selection. Two positions — anchor at the start of the interaction (e.g., mousedown, Shift+Click origin) and focus at the current cursor position.

Direction-preserving: anchor may come before OR after focus. Dragging backward shrinks / inverts the selection without losing the original anchor.

Use Selection::caret for a collapsed selection (cursor between two graphemes, no text highlighted).

Fields

anchor: Position

focus: Position

Implementations

impl Selection

pub fn new(anchor: Position, focus: Position) -> Self

Construct with explicit anchor + focus. Can be inverted (focus before anchor in document order).

pub fn caret(pos: Position) -> Self

Construct a collapsed selection (caret) at pos. anchor == focus == pos.

pub fn is_collapsed(&self) -> bool

true iff anchor == focus — no text is highlighted; the selection represents a caret position only.

Trait Implementations

impl Clone for Selection

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Selection

impl Debug for Selection

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

Formats the value using the given formatter.

impl Eq for Selection

impl Hash for Selection

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 Selection

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Selection