undo method

  1. @override
void undo(
  1. EditorState state
)
override

Implementation

@override
void undo(EditorState state) {
  int reverseOldIndex = newIndex;
  int reverseNewIndex = oldIndex;
  if (oldIndex < newIndex) {
    reverseOldIndex -= 1;
  } else {
    reverseNewIndex += 1;
  }
  _move(state, reverseOldIndex, reverseNewIndex);
}