Instance Property


The number of nested undo groups (or redo groups, if Redo was invoked last) in the current event loop.


@property(readonly) NSInteger groupingLevel;


An integer indicating the number of nested groups. If 0 is returned, there is no open undo or redo group.

See Also

Creating Undo Groups

- beginUndoGrouping

Marks the beginning of an undo group.

- endUndoGrouping

Marks the end of an undo group.


A Boolean value that indicates whether the receiver automatically creates undo groups around each pass of the run loop.