setPage method

void setPage(
  1. int page
)

Set the current page and initialize its data if not already present

Implementation

void setPage(int page) {
  _currentPage = page;
  _imageBoxes.putIfAbsent(page, () => []);
  _history.putIfAbsent(page, () => []);
  _undoStack.putIfAbsent(page, () => []);
  notifyListeners();
}