Halkyon's shared packages

A pub workspace of the Dart packages Halkyon's apps share: halkyon_ui,
Halkyon's look (the theme, fonts, layout and shared widgets, with texts
in English and German), halkyon_core's low-level primitives and
halkyon_interop's cross-app contracts. Dart 3.13 with LeanCode's lints,
configured once at the root; apps take a package by git, pinned to a
signed commit.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

packages/halkyon_ui/lib/l10n/halkyon_ui_localizations.dart

@@ -0,0 +1,257 @@
+import 'dart:async';
+
+import 'package:flutter/foundation.dart';
+import 'package:flutter/widgets.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
+import 'package:intl/intl.dart' as intl;
+
+import 'halkyon_ui_localizations_de.dart';
+import 'halkyon_ui_localizations_en.dart';
+
+// ignore_for_file: type=lint
+
+/// Callers can lookup localized strings with an instance of HalkyonUiLocalizations
+/// returned by `HalkyonUiLocalizations.of(context)`.
+///
+/// Applications need to include `HalkyonUiLocalizations.delegate()` in their app's
+/// `localizationDelegates` list, and the locales they support in the app's
+/// `supportedLocales` list. For example:
+///
+/// ```dart
+/// import 'l10n/halkyon_ui_localizations.dart';
+///
+/// return MaterialApp(
+///   localizationsDelegates: HalkyonUiLocalizations.localizationsDelegates,
+///   supportedLocales: HalkyonUiLocalizations.supportedLocales,
+///   home: MyApplicationHome(),
+/// );
+/// ```
+///
+/// ## Update pubspec.yaml
+///
+/// Please make sure to update your pubspec.yaml to include the following
+/// packages:
+///
+/// ```yaml
+/// dependencies:
+///   # Internationalization support.
+///   flutter_localizations:
+///     sdk: flutter
+///   intl: any # Use the pinned version from flutter_localizations
+///
+///   # Rest of dependencies
+/// ```
+///
+/// ## iOS Applications
+///
+/// iOS applications define key application metadata, including supported
+/// locales, in an Info.plist file that is built into the application bundle.
+/// To configure the locales supported by your app, you’ll need to edit this
+/// file.
+///
+/// First, open your project’s ios/Runner.xcworkspace Xcode workspace file.
+/// Then, in the Project Navigator, open the Info.plist file under the Runner
+/// project’s Runner folder.
+///
+/// Next, select the Information Property List item, select Add Item from the
+/// Editor menu, then select Localizations from the pop-up menu.
+///
+/// Select and expand the newly-created Localizations item then, for each
+/// locale your application supports, add a new item and select the locale
+/// you wish to add from the pop-up menu in the Value field. This list should
+/// be consistent with the languages listed in the HalkyonUiLocalizations.supportedLocales
+/// property.
+abstract class HalkyonUiLocalizations {
+  HalkyonUiLocalizations(String locale)
+    : localeName = intl.Intl.canonicalizedLocale(locale.toString());
+
+  final String localeName;
+
+  static HalkyonUiLocalizations of(BuildContext context) {
+    return Localizations.of<HalkyonUiLocalizations>(
+      context,
+      HalkyonUiLocalizations,
+    )!;
+  }
+
+  static const LocalizationsDelegate<HalkyonUiLocalizations> delegate =
+      _HalkyonUiLocalizationsDelegate();
+
+  /// A list of this localizations delegate along with the default localizations
+  /// delegates.
+  ///
+  /// Returns a list of localizations delegates containing this delegate along with
+  /// GlobalMaterialLocalizations.delegate, GlobalCupertinoLocalizations.delegate,
+  /// and GlobalWidgetsLocalizations.delegate.
+  ///
+  /// Additional delegates can be added by appending to this list in
+  /// MaterialApp. This list does not have to be used at all if a custom list
+  /// of delegates is preferred or required.
+  static const List<LocalizationsDelegate<dynamic>> localizationsDelegates =
+      <LocalizationsDelegate<dynamic>>[
+        delegate,
+        GlobalMaterialLocalizations.delegate,
+        GlobalCupertinoLocalizations.delegate,
+        GlobalWidgetsLocalizations.delegate,
+      ];
+
+  /// A list of this localizations delegate's supported locales.
+  static const List<Locale> supportedLocales = <Locale>[
+    Locale('de'),
+    Locale('en'),
+    Locale('en', 'GB'),
+    Locale('en', 'US'),
+  ];
+
+  /// The brand's word, above an app's own in its wordmark ("Halkyon" over "Learn").
+  ///
+  /// In en, this message translates to:
+  /// **'Halkyon'**
+  String get brand;
+
+  /// No description provided for @close.
+  ///
+  /// In en, this message translates to:
+  /// **'Close'**
+  String get close;
+
+  /// No description provided for @cancel.
+  ///
+  /// In en, this message translates to:
+  /// **'Cancel'**
+  String get cancel;
+
+  /// No description provided for @undo.
+  ///
+  /// In en, this message translates to:
+  /// **'Undo'**
+  String get undo;
+
+  /// No description provided for @dragToReorder.
+  ///
+  /// In en, this message translates to:
+  /// **'Drag to reorder'**
+  String get dragToReorder;
+
+  /// No description provided for @reorder.
+  ///
+  /// In en, this message translates to:
+  /// **'Reorder'**
+  String get reorder;
+
+  /// No description provided for @reorderDone.
+  ///
+  /// In en, this message translates to:
+  /// **'Done'**
+  String get reorderDone;
+
+  /// Below a required field while it is empty.
+  ///
+  /// In en, this message translates to:
+  /// **'Required'**
+  String get requiredField;
+
+  /// No description provided for @decrease.
+  ///
+  /// In en, this message translates to:
+  /// **'Decrease'**
+  String get decrease;
+
+  /// No description provided for @increase.
+  ///
+  /// In en, this message translates to:
+  /// **'Increase'**
+  String get increase;
+
+  /// No description provided for @typeANumber.
+  ///
+  /// In en, this message translates to:
+  /// **'Type a number'**
+  String get typeANumber;
+
+  /// No description provided for @gone.
+  ///
+  /// In en, this message translates to:
+  /// **'This no longer exists. It may have been deleted on another device.'**
+  String get gone;
+
+  /// No description provided for @moreInfo.
+  ///
+  /// In en, this message translates to:
+  /// **'More info'**
+  String get moreInfo;
+
+  /// No description provided for @copiedToClipboard.
+  ///
+  /// In en, this message translates to:
+  /// **'Copied to clipboard'**
+  String get copiedToClipboard;
+
+  /// No description provided for @copy.
+  ///
+  /// In en, this message translates to:
+  /// **'Copy'**
+  String get copy;
+
+  /// A colour of the palette content can take, by its stored name.
+  ///
+  /// In en, this message translates to:
+  /// **'{name, select, carrot{Carrot} cerise{Cerise} cobalt{Cobalt} copper{Copper} enzian{Enzian} fern{Fern} forest{Forest} ocean{Ocean} olive{Olive} pacific{Pacific} pickle{Pickle} pine{Pine} pink{Pink} plum{Plum} purple{Purple} reef{Reef} sahara{Sahara} slateblue{Slate blue} soil{Soil} strawberry{Strawberry} other{{name}}}'**
+  String paletteColorName(String name);
+
+  /// No description provided for @colorPickerLabel.
+  ///
+  /// In en, this message translates to:
+  /// **'Colour: {color}'**
+  String colorPickerLabel(String color);
+}
+
+class _HalkyonUiLocalizationsDelegate
+    extends LocalizationsDelegate<HalkyonUiLocalizations> {
+  const _HalkyonUiLocalizationsDelegate();
+
+  @override
+  Future<HalkyonUiLocalizations> load(Locale locale) {
+    return SynchronousFuture<HalkyonUiLocalizations>(
+      lookupHalkyonUiLocalizations(locale),
+    );
+  }
+
+  @override
+  bool isSupported(Locale locale) =>
+      <String>['de', 'en'].contains(locale.languageCode);
+
+  @override
+  bool shouldReload(_HalkyonUiLocalizationsDelegate old) => false;
+}
+
+HalkyonUiLocalizations lookupHalkyonUiLocalizations(Locale locale) {
+  // Lookup logic when language+country codes are specified.
+  switch (locale.languageCode) {
+    case 'en':
+      {
+        switch (locale.countryCode) {
+          case 'GB':
+            return HalkyonUiLocalizationsEnGb();
+          case 'US':
+            return HalkyonUiLocalizationsEnUs();
+        }
+        break;
+      }
+  }
+
+  // Lookup logic when only language code is specified.
+  switch (locale.languageCode) {
+    case 'de':
+      return HalkyonUiLocalizationsDe();
+    case 'en':
+      return HalkyonUiLocalizationsEn();
+  }
+
+  throw FlutterError(
+    'HalkyonUiLocalizations.delegate failed to load unsupported locale "$locale". This is likely '
+    'an issue with the localizations generation tool. Please file an issue '
+    'on GitHub with a reproducible sample app and the gen-l10n configuration '
+    'that was used.',
+  );
+}