first commit

2026-05-18 14:15:38 -04:00
commit 1563409cb1
382 changed files with 45347 additions and 0 deletions
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+import 'dart:collection';
+
+import 'package:flutter/material.dart';
+
+import 'package:flutter_gen/gen_l10n/app_localizations.dart';
+import 'package:locale_names/locale_names.dart';
+
+import '../../services/locale_helper.dart';
+
+class LanguageList extends StatefulWidget {
+  const LanguageList({super.key});
+
+  @override
+  State<LanguageList> createState() => _LanguageListState();
+}
+
+class _LanguageListState extends State<LanguageList> {
+  // yeah I'm a computer science student how could you tell
+  // (sorts locales without having to copy them into a list first)
+  final locales = SplayTreeMap<String?, Locale>.fromIterable(
+    AppLocalizations.supportedLocales,
+    key: (element) => (element as Locale).defaultDisplayLanguage,
+    value: (element) => element,
+  );
+
+  @override
+  Widget build(BuildContext context) {
+    return Scrollbar(
+      // We have a ValueListenableBuilder here to rebuild all the ListTiles when
+      // the language changes
+      child: ValueListenableBuilder(
+        valueListenable: LocaleHelper.localeListener,
+        builder: (_, __, ___) {
+          return CustomScrollView(
+            slivers: [
+              // For some reason, setting the null (system) LanguageListTile to
+              // const stops it from switching when going to/from the same
+              // language as the system language (e.g., system to English on a
+              // device set to English)
+              // ignore: prefer_const_constructors
+              SliverList(
+                // ignore: prefer_const_constructors
+                delegate: SliverChildListDelegate.fixed([
+                  // ignore: prefer_const_constructors
+                  LanguageListTile(),
+                  const Divider(),
+                ]),
+              ),
+              SliverList(
+                delegate: SliverChildBuilderDelegate(
+                  (context, index) {
+                    final locale = locales.values.elementAt(index);
+
+                    return LanguageListTile(locale: locale);
+                  },
+                  childCount: locales.length,
+                ),
+              )
+            ],
+          );
+        },
+      ),
+    );
+  }
+}
+
+class LanguageListTile extends StatelessWidget {
+  const LanguageListTile({
+    super.key,
+    this.locale,
+  });
+
+  final Locale? locale;
+
+  @override
+  Widget build(BuildContext context) {
+    return RadioListTile<Locale?>(
+      title: Text(locale?.nativeDisplayLanguage ??
+          AppLocalizations.of(context)!.system),
+      subtitle: locale == null
+          ? null
+          : Text((LocaleHelper.locale == null
+                  ? locale!.defaultDisplayLanguage
+                  : locale!.displayLanguageIn(LocaleHelper.locale!)) ??
+              "???"),
+      value: locale,
+      groupValue: LocaleHelper.locale,
+      onChanged: (_) {
+        LocaleHelper.setLocale(locale);
+      },
+    );
+  }
+}