juice_theme library

App theme selection as a Juice bloc.

ThemeBloc owns the theme selection — ThemeMode mode plus an optional named flavor — and persists it through a swappable ThemePersistence seam (default: StorageThemePersistence). It owns the selection, not the ThemeData: feed bloc.state.mode to MaterialApp.themeMode and map bloc.state.flavor to your own themes.

final theme = ThemeBloc.withConfig(
  ThemeConfig(persistence: StorageThemePersistence(storageBloc)),
);

class App extends StatelessJuiceWidget<ThemeBloc> {
  App({super.key}) : super(groups: {ThemeGroups.mode});
  @override
  Widget onBuild(BuildContext context, StreamStatus status) => MaterialApp(
        themeMode: bloc.state.mode,
        theme: lightTheme, darkTheme: darkTheme,
        home: const Home(),
      );
}

Classes

InitializeThemeEvent

Configure persistence and load the saved selection (or defaults).

SetFlavorEvent

Set (or clear, with null) the named flavor.

SetThemeModeEvent

Set the theme mode explicitly.

StorageThemePersistence

Default ThemePersistence backed by StorageBloc (SharedPreferences).

ThemeBloc

Bloc that owns the app's theme selection (mode + optional flavor).

ThemeConfig