Struct UndoManager 

pub struct UndoManager { /* private fields */ }

Manages undo/redo stacks for cell operations.

Implementations

impl UndoManager

pub fn new() -> Self

Create a new undo manager.

pub fn record(&mut self, operation: UndoableOperation)

Record an operation that was just performed.

This clears the redo stack (can’t redo after a new operation).

pub fn pop_undo(&mut self) -> Option<UndoableOperation>

Pop the last operation from the undo stack.

Returns the operation to undo, or None if stack is empty. The caller should execute the reverse operation, then call record_redo.

pub fn record_redo(&mut self, operation: UndoableOperation)

Record an operation that was just undone (for redo).

pub fn pop_redo(&mut self) -> Option<UndoableOperation>

Pop the last operation from the redo stack.

Returns the operation to redo, or None if stack is empty. The caller should execute the operation, then call record as normal.

pub fn can_undo(&self) -> bool

Check if undo is available.

pub fn can_redo(&self) -> bool

Check if redo is available.

pub fn undo_description(&self) -> Option<String>

Get description of what will be undone (for UI).

pub fn redo_description(&self) -> Option<String>

Get description of what will be redone (for UI).

pub fn clear(&mut self)

Clear all undo/redo history.

Called when the file is externally modified.

Trait Implementations

impl Debug for UndoManager

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

Formats the value using the given formatter.

impl Default for UndoManager

fn default() -> UndoManager

Returns the “default value” for a type.