Struct Selection 

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

A range of text with a fixed anchor and a moving head.

The head is where the cursor is drawn and where typing happens. Extending moves the head and leaves the anchor, which is what makes shift+arrow grow and shrink from the end the user expects.

Fields

anchor: Position

head: Position

Implementations

impl Selection

pub fn caret(at: Position) -> Self

pub fn is_empty(&self) -> bool

pub fn range(&self) -> (Position, Position)

The endpoints in document order, regardless of which way it was made.

pub fn contains(&self, pos: Position) -> bool

Half-open: the start is inside, the end is not.

That is what makes two selections which merely touch — one ending where the next begins — stay separate instead of merging.

Trait Implementations

impl Clone for Selection

fn clone(&self) -> Selection

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 Default for Selection

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Selection

impl PartialEq for Selection

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Selection