Struct MapUndoHistory 

pub struct MapUndoHistory {
    pub actions: VecDeque<MapUndoAction>,
    pub redo_stack: Vec<MapUndoAction>,
    pub max_history: usize,
}

Fields

actions: VecDeque<MapUndoAction>

redo_stack: Vec<MapUndoAction>

max_history: usize

Implementations

impl MapUndoHistory

pub fn new(max: usize) -> Self

pub fn push_action(&mut self, a: MapUndoAction)

pub fn undo(&mut self) -> Option<MapUndoAction>

pub fn redo(&mut self) -> Option<MapUndoAction>

pub fn push(&mut self, action: MapUndoAction)

pub fn can_undo(&self) -> bool

pub fn can_redo(&self) -> bool

pub fn undo_count(&self) -> usize