handlePlatformUndo abstract method

void handlePlatformUndo(
  1. UndoDirection direction
)

Requests that the client perform an undo or redo operation.

Currently only used on iOS 9+ when the undo or redo methods are invoked by the platform. For example, when using three-finger swipe gestures, the iPad keyboard, or voice control.

Implementation

void handlePlatformUndo(UndoDirection direction);