Widget build()

in nav2-usability/scenario_code/lib/nested-routing/nested_routing_beamer.dart [49:93]
45 lines of code
4 McCabe index (conditional complexity)

  Widget build(BuildContext context) {
    final beamerState = Beamer.of(context).state;
    return Scaffold(
      body: Beamer(
        key: _innerBeamer,
        routerDelegate: BeamerDelegate(
          transitionDelegate: NoAnimationTransitionDelegate(),
          locationBuilder: SimpleLocationBuilder(
            routes: {
              '/books/*': (context) => BooksScreen(
                  appPage: beamerState.uri.pathSegments.contains('all')
                      ? AppPage.allBooks
                      : AppPage.newBooks,
                  onTabSelected:
                      (index) {} // added a listener to TabController: line 118
                  ),
              '/settings': (context) => SettingsScreen(),
            },
          ),
        ),
      ),
      bottomNavigationBar: BottomNavigationBar(
        currentIndex: beamerState.uri.path == '/settings' ? 1 : 0,
        onTap: (idx) {
          if (idx == 0) {
            _innerBeamer.currentState?.routerDelegate.beamToNamed('/books/new');
            setState(() {});
          } else {
            _innerBeamer.currentState?.routerDelegate.beamToNamed('/settings');
            setState(() {});
          }
        },
        items: [
          BottomNavigationBarItem(
            label: 'Books',
            icon: Icon(Icons.chrome_reader_mode_outlined),
          ),
          BottomNavigationBarItem(
            label: 'Settings',
            icon: Icon(Icons.settings),
          ),
        ],
      ),
    );
  }