load method

@override Future<ShadLocalizationsData> load(Locale locale)

Start loading the resources for locale. The returned future completes when the resources have finished loading.

It's assumed that this method will return an object that contains a collection of related string resources (typically defined with one method per resource). The object will be retrieved with Localizations.of.

Implementation

@override
Future<ShadLocalizationsData> load(Locale locale) {
  // Two-pass: prefer exact language+country match, fall back to
  // language-only, then to English.
  final exact = ShadLocale.values.where((l) {
    return l.languageCode == locale.languageCode &&
        l.countryCode == locale.countryCode;
  }).firstOrNull;
  final match =
      exact ??
      ShadLocale.values
          .where((l) => l.languageCode == locale.languageCode)
          .firstOrNull ??
      ShadLocale.en;

  // English is the base locale (not deferred) — load synchronously so the
  // widget tree is ready on the first frame, keeping tests fast.
  if (match == ShadLocale.en) {
    return SynchronousFuture<ShadLocalizationsData>(match.buildSync());
  }

  // All other locales are deferred imports. Must use the async build() so
  // loadLibrary() is called before accessing the locale class (required on
  // Flutter web / dart2js / wasm).
  return match.build();
}