Struct UndoRedoState 

pub struct UndoRedoState {
    pub undo_stack: Vec<(String, usize)>,
    pub redo_stack: Vec<(String, usize)>,
    pub max_undo_entries: usize,
}

State for undo/redo operations

Fields

undo_stack: Vec<(String, usize)>

Undo stack storing (text, cursor_position)

redo_stack: Vec<(String, usize)>

Redo stack storing (text, cursor_position)

max_undo_entries: usize

Maximum number of undo entries to keep

Implementations

impl UndoRedoState

pub fn push_undo(&mut self, text: String, cursor: usize)

Push a state to the undo stack

pub fn pop_undo(&mut self) -> Option<(String, usize)>

Pop from undo stack

pub fn push_redo(&mut self, text: String, cursor: usize)

Push to redo stack

pub fn pop_redo(&mut self) -> Option<(String, usize)>

Pop from redo stack

Trait Implementations

impl Clone for UndoRedoState

fn clone(&self) -> UndoRedoState

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UndoRedoState

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

Formats the value using the given formatter.

impl Default for UndoRedoState

fn default() -> Self

Returns the “default value” for a type.