registerThemes<T> method

void registerThemes<T>(List<BaseThemeConfig<T>> themes, { String? initialThemeId, })

Register themes with the manager.

themes - List of theme configurations to register. initialThemeId - Optional theme ID to use on first launch. If provided, it will disable system theme following. If not provided, the system brightness will be used to select a matching theme.

Implementation

void registerThemes<T>(
  List<BaseThemeConfig<T>> themes, {
  String? initialThemeId,
}) {
  _themes.clear();
  _themes.addAll(themes);

  if (_themes.isEmpty) {
    throw ArgumentError('At least one theme must be registered.');
  }

  // Store initial theme ID for use in init()
  _initialThemeId = initialThemeId;

  // If initialThemeId is provided, disable follow system theme
  if (initialThemeId != null && initialThemeId.isNotEmpty) {
    _followSystemTheme = false;
    final themeExists = _themes.any((t) => t.id == initialThemeId);
    if (themeExists) {
      _setThemeInternal(initialThemeId, notify: false, persist: false);
    } else {
      _setThemeInternal(_themes.first.id, notify: false, persist: false);
    }
  } else {
    // Auto-detect from system brightness
    _applySystemTheme(notify: false, persist: false);
  }
}