Struct CursorRange 

pub struct CursorRange { /* private fields */ }

Cursor index / selection range

This is essentially a pair of indices: the selection index and the edit index.

Implementations

impl CursorRange

pub fn new(sel: usize, edit: usize) -> Self

Construct from (selection, edit) positions

Constructs as a range, with the cursor at the edit position.

See also:

• Default: an empty cursor at index 0
• From<usize>: construct from an index (empty selection)
• From<Range<usize>>: construct from a range (potentially non-empty selection; edit position is set to the range’s end)

pub fn is_empty(&self) -> bool

True if the selection index equals the cursor index

pub fn set_empty(&mut self)

Clear selection without changing the edit index

pub fn sel_index(&self) -> usize

Get the selection index

pub fn edit_index(&self) -> usize

Get the edit cursor index

pub fn range(&self) -> Range<usize>

Get the selection range

This range is from the edit index to the selection index or reversed, whichever is increasing.

Trait Implementations

impl Clone for CursorRange

fn clone(&self) -> CursorRange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CursorRange

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

Formats the value using the given formatter.

impl Default for CursorRange

fn default() -> CursorRange

Returns the “default value” for a type.

impl From<Range<usize>> for CursorRange

fn from(range: Range<usize>) -> Self

Converts to this type from the input type.

impl From<usize> for CursorRange

fn from(index: usize) -> Self

Converts to this type from the input type.

impl PartialEq for CursorRange

fn eq(&self, other: &CursorRange) -> 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 CursorRange

impl Eq for CursorRange

impl StructuralPartialEq for CursorRange