Enum EditKind 

pub enum EditKind {
    Typing {
        boundary: bool,
    },
    Deleting,
    Composing,
    Chunk,
}

What sort of change a keystroke made — the unit undo steps back by.

Variants

Typing

One character typed. boundary is a character that ends a word, which joins the run it is the end of and closes it.

Fields

boundary: bool

Whether this character ends a word.

Deleting

A backspace or a forward delete, with nothing selected.

Composing

A revision of the text an input method is still composing.

Chunk

A paste, a cut, a selection replaced, a line break: one deliberate act, one step.

Implementations

impl EditKind

pub fn of(key: &Key, selected: bool, composing: bool) -> Self

Reads a keystroke as one of the four, given what the field was in when it arrived: whether something was selected, and whether an input method was composing.

The two conditions are the reason this is not a match on the key alone. A backspace with a selection removes a passage and is a chunk; the same backspace with no selection removes a letter and joins the run. Typing with a selection replaces it, which is the case the issue names — a whole selection replaced by one character is one step, and the step has to include what was replaced.

Trait Implementations

impl Clone for EditKind

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 EditKind

impl Debug for EditKind

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

Formats the value using the given formatter.

impl Eq for EditKind

impl PartialEq for EditKind

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for EditKind