updateShouldNotifyDependent method

Implementation

@override
bool updateShouldNotifyDependent(
    LLContentModel old, Set<LLAspect> dependencies) {
  // A language or release change is an UNCONDITIONAL broadcast: an atomic
  // swap changes every segment at once, so comparing per-segment state would
  // miss it whenever two releases happen to leave a segment in the same
  // state.
  if (old.language != language ||
      old.releaseSeq != releaseSeq ||
      old.manifestHash != manifestHash) {
    return true;
  }

  for (final LLAspect aspect in dependencies) {
    final bool changed = switch (aspect) {
      _AnyAspect() => old.version != version,
      _LanguageAspect() => old.requestedLanguage != requestedLanguage,
      _DirectionAspect() => old.direction != direction,
      _ReleaseAspect() => old.source != source,
      _StatusAspect() => old.status.version != status.version,
      _FontAspect() =>
        old.fontFamily != fontFamily || old.fontState != fontState,
      // Covered by the manifest-hash check above; a new language list cannot
      // arrive without a new release.
      _LanguagesAspect() => false,
      LLSegmentAspect(:final String name) =>
        old.segmentStates[name] != segmentStates[name],
    };
    if (changed) return true;
  }
  return false;
}