com.goodow.realtime.operation.undo

接口 UndoManagerPlus<T>

类型参数:

T - The type of operations.

所有超级接口:

UndoManager<T>

所有已知实现类:

UndoManagerImpl

public interface UndoManagerPlus<T>
extends UndoManager<T>

An UndoManager that provides versions of the undo and redo methods which return more information.

方法概要

方法

限定符和类型	方法和说明
Pair<List<T>,List<T>>	redoPlus() Effects a redo.
Pair<List<T>,List<T>>	undoPlus() Effects an undo.

从接口继承的方法 com.goodow.realtime.operation.undo.UndoManager

canRedo, canUndo, checkpoint, nonUndoableOp, redo, undo, undoableOp

方法详细资料

redoPlus

Pair<List<T>,List<T>> redoPlus()

Effects a redo. Returns null if there are no operations to redo. NOTE: Warning. This interface method may change.

返回:

a pair containing the operation that will effect a redo and the relevant transformed non-undoable operation (which may be null if no such operation exists) NOTE: Returning null is probably slightly harder to use than returning an operation that does nothing.

undoPlus

Pair<List<T>,List<T>> undoPlus()

Effects an undo. Returns null if there are no operations to undo. NOTE: Warning. This interface method may change.

返回:

a pair containing the operation that will effect an undo and the relevant transformed non-undoable operation (which may be null if no such operation exists) NOTE: Returning null is probably slightly harder to use than returning an operation that does nothing.