Instance Property


Boolean value that indicates whether the next undo action is discardable.


var undoActionIsDiscardable: Bool { get }


true if the action is discardable; false otherwise.

Specifies that the latest undo action may be safely discarded when a document can not be saved for any reason. These are typically actions that don’t affect persistent state.

An example might be an undo action that changes the viewable area of a document.

See Also

Discardable Undo and Redo Actions

func setActionIsDiscardable(Bool)

Sets whether the next undo or redo action is discardable.

var redoActionIsDiscardable: Bool

Boolean value that indicates whether the next redo action is discardable.