adding i18n for dynamic page

2026-10-02 22:03:21 +05:30
parent 63ecc3e7e6
commit 2527b957aa
23 changed files with 3053 additions and 2 deletions
@@ -0,0 +1,223 @@
+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 'app_localizations_en.dart';
+import 'app_localizations_hi.dart';
+
+// ignore_for_file: type=lint
+
+/// Callers can lookup localized strings with an instance of AppLocalizations
+/// returned by `AppLocalizations.of(context)`.
+///
+/// Applications need to include `AppLocalizations.delegate()` in their app's
+/// `localizationDelegates` list, and the locales they support in the app's
+/// `supportedLocales` list. For example:
+///
+/// ```dart
+/// import 'l10n/app_localizations.dart';
+///
+/// return MaterialApp(
+///   localizationsDelegates: AppLocalizations.localizationsDelegates,
+///   supportedLocales: AppLocalizations.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 AppLocalizations.supportedLocales
+/// property.
+abstract class AppLocalizations {
+  AppLocalizations(String locale)
+      : localeName = intl.Intl.canonicalizedLocale(locale.toString());
+
+  final String localeName;
+
+  static AppLocalizations? of(BuildContext context) {
+    return Localizations.of<AppLocalizations>(context, AppLocalizations);
+  }
+
+  static const LocalizationsDelegate<AppLocalizations> delegate =
+      _AppLocalizationsDelegate();
+
+  /// 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('en'),
+    Locale('hi')
+  ];
+
+  /// Dialog error title
+  ///
+  /// In en, this message translates to:
+  /// **'Error'**
+  String get error;
+
+  /// Dialog OK button
+  ///
+  /// In en, this message translates to:
+  /// **'OK'**
+  String get ok;
+
+  /// List search hint
+  ///
+  /// In en, this message translates to:
+  /// **'Search...'**
+  String get search;
+
+  /// Delete dialog title
+  ///
+  /// In en, this message translates to:
+  /// **'Confirm Deletion'**
+  String get confirmDeletion;
+
+  /// Delete dialog body
+  ///
+  /// In en, this message translates to:
+  /// **'Are you sure you want to delete?'**
+  String get deleteConfirmation;
+
+  /// Cancel button
+  ///
+  /// In en, this message translates to:
+  /// **'Cancel'**
+  String get cancel;
+
+  /// Delete button
+  ///
+  /// In en, this message translates to:
+  /// **'Delete'**
+  String get delete;
+
+  /// Audit fields dialog title
+  ///
+  /// In en, this message translates to:
+  /// **'Additional Fields'**
+  String get additionalFields;
+
+  /// Close button
+  ///
+  /// In en, this message translates to:
+  /// **'Close'**
+  String get close;
+
+  /// Image picker title
+  ///
+  /// In en, this message translates to:
+  /// **'Select Image Source'**
+  String get selectImageSource;
+
+  /// Image gallery option
+  ///
+  /// In en, this message translates to:
+  /// **'Gallery'**
+  String get gallery;
+
+  /// Camera option
+  ///
+  /// In en, this message translates to:
+  /// **'Camera'**
+  String get camera;
+
+  /// Form submit button
+  ///
+  /// In en, this message translates to:
+  /// **'Submit'**
+  String get submit;
+
+  /// Form update button
+  ///
+  /// In en, this message translates to:
+  /// **'Update'**
+  String get update;
+
+  /// Edit action
+  ///
+  /// In en, this message translates to:
+  /// **'Edit'**
+  String get edit;
+}
+
+class _AppLocalizationsDelegate
+    extends LocalizationsDelegate<AppLocalizations> {
+  const _AppLocalizationsDelegate();
+
+  @override
+  Future<AppLocalizations> load(Locale locale) {
+    return SynchronousFuture<AppLocalizations>(lookupAppLocalizations(locale));
+  }
+
+  @override
+  bool isSupported(Locale locale) =>
+      <String>['en', 'hi'].contains(locale.languageCode);
+
+  @override
+  bool shouldReload(_AppLocalizationsDelegate old) => false;
+}
+
+AppLocalizations lookupAppLocalizations(Locale locale) {
+  // Lookup logic when only language code is specified.
+  switch (locale.languageCode) {
+    case 'en':
+      return AppLocalizationsEn();
+    case 'hi':
+      return AppLocalizationsHi();
+  }
+
+  throw FlutterError(
+      'AppLocalizations.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.');
+}