UndoManager
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2023-12-01
This object maintains the undo stack for an EditSession
.
Constructors
- new UndoManager()
Resets the current undo state and creates a new UndoManager
.
Methods
- UndoManager.execute(Object options)
Provides a means for implementing your own undo manager. options
has one property, args
, an Array
, with two elements:
args[0]
is an array of deltasargs[1]
is the document to associate with
options | Object | Required. Contains additional properties |
- UndoManager.hasRedo()
- 返回值: Boolean
Returns true
if there are redo operations left to perform.
- UndoManager.hasUndo()
- 返回值: Boolean
Returns true
if there are undo operations left to perform.
- UndoManager.redo(Boolean dontSelect)
Perform a redo operation on the document, reimplementing the last change.
dontSelect | Boolean | Required. If true , doesn't select the range of where the change occurred |
- UndoManager.reset()
Destroys the stack of undo and redo redo operations.
Perform an undo operation on the document, reverting the last change.
dontSelect | Boolean | Required. If true , doesn't select the range of where the change occurred |