fullscreenDialog property

@override bool fullscreenDialog

Whether this page route is a full-screen dialog.

In Material and Cupertino, being fullscreen has the effects of making the app bars have a close button instead of a back button. On iOS, dialogs transitions animate differently and are also not closeable with the back swipe gesture.

Implementation

@override
bool get fullscreenDialog {
  if (isNested && isFirst && ModalRoute.of(nuvigator!.context) is PageRoute) {
    final containedPageRoute =
        ModalRoute.of(nuvigator!.context) as PageRoute<dynamic>?;
    return super.fullscreenDialog || containedPageRoute!.fullscreenDialog;
  }
  return super.fullscreenDialog;
}