hoodle-core-0.12: Core library for hoodle

PortabilityGHC
Stabilityexperimental
MaintainerIan-Woo Kim <ianwookim@gmail.com>
Safe HaskellNone

Hoodle.Type.Undo

Description

 

Documentation

data UndoTable a Source

Constructors

UndoTable 

Fields

undo_allowednum :: Int
 
undo_totalnum :: Int
 
undo_zipper :: Maybe (SeqZipper a)
 

emptyUndo :: Int -> UndoTable aSource

singletonUndo :: Int -> a -> UndoTable aSource

addToUndo :: UndoTable a -> a -> UndoTable aSource

getCurrentUndoItem :: UndoTable a -> Maybe aSource

getPrevUndo :: UndoTable a -> Maybe (a, UndoTable a)Source

getNextUndo :: UndoTable a -> Maybe (a, UndoTable a)Source

numOfUndo :: UndoTable a -> IntSource