settings: Add browser preference setting ui

Signed-off-by: Zixuan James Li <zixuan@zulip.com>

Author: PIG208

assets/l10n/app_en.arb

@@ -23,6 +23,10 @@
   "@settingsPageTitle": {
     "description": "Title for the settings page."
   },
+  "settingsUseExternalBrowser": "Use external browser",
+  "@settingsUseExternalBrowser": {
+    "description": "Whether to open links with external browser or not"
+  },
   "switchAccountButton": "Switch account",
   "@switchAccountButton": {
     "description": "Label for main-menu button leading to the choose-account page."

lib/generated/l10n/zulip_localizations.dart

@@ -141,6 +141,12 @@ abstract class ZulipLocalizations {
   /// **'Settings'**
   String get settingsPageTitle;
 
+  /// Whether to open links with external browser or not
+  ///
+  /// In en, this message translates to:
+  /// **'Use external browser'**
+  String get settingsUseExternalBrowser;
+
   /// Label for main-menu button leading to the choose-account page.
   ///
   /// In en, this message translates to:

lib/generated/l10n/zulip_localizations_ar.dart

@@ -26,6 +26,9 @@ class ZulipLocalizationsAr extends ZulipLocalizations {
   @override
   String get settingsPageTitle => 'Settings';
 
+  @override
+  String get settingsUseExternalBrowser => 'Use external browser';
+
   @override
   String get switchAccountButton => 'Switch account';
 

lib/generated/l10n/zulip_localizations_en.dart

@@ -26,6 +26,9 @@ class ZulipLocalizationsEn extends ZulipLocalizations {
   @override
   String get settingsPageTitle => 'Settings';
 
+  @override
+  String get settingsUseExternalBrowser => 'Use external browser';
+
   @override
   String get switchAccountButton => 'Switch account';
 

lib/generated/l10n/zulip_localizations_ja.dart

@@ -26,6 +26,9 @@ class ZulipLocalizationsJa extends ZulipLocalizations {
   @override
   String get settingsPageTitle => 'Settings';
 
+  @override
+  String get settingsUseExternalBrowser => 'Use external browser';
+
   @override
   String get switchAccountButton => 'Switch account';
 

lib/generated/l10n/zulip_localizations_nb.dart

@@ -26,6 +26,9 @@ class ZulipLocalizationsNb extends ZulipLocalizations {
   @override
   String get settingsPageTitle => 'Settings';
 
+  @override
+  String get settingsUseExternalBrowser => 'Use external browser';
+
   @override
   String get switchAccountButton => 'Switch account';
 

lib/generated/l10n/zulip_localizations_pl.dart

@@ -26,6 +26,9 @@ class ZulipLocalizationsPl extends ZulipLocalizations {
   @override
   String get settingsPageTitle => 'Settings';
 
+  @override
+  String get settingsUseExternalBrowser => 'Use external browser';
+
   @override
   String get switchAccountButton => 'Przełącz konto';
 

lib/generated/l10n/zulip_localizations_ru.dart

@@ -26,6 +26,9 @@ class ZulipLocalizationsRu extends ZulipLocalizations {
   @override
   String get settingsPageTitle => 'Settings';
 
+  @override
+  String get settingsUseExternalBrowser => 'Use external browser';
+
   @override
   String get switchAccountButton => 'Сменить учетную запись';
 

lib/generated/l10n/zulip_localizations_sk.dart

@@ -26,6 +26,9 @@ class ZulipLocalizationsSk extends ZulipLocalizations {
   @override
   String get settingsPageTitle => 'Settings';
 
+  @override
+  String get settingsUseExternalBrowser => 'Use external browser';
+
   @override
   String get switchAccountButton => 'Zmeniť účet';
 

lib/widgets/settings.dart

@@ -24,11 +24,50 @@ class SettingsPage extends StatelessWidget {
       appBar: ZulipAppBar(
         title: Text(zulipLocalizations.settingsPageTitle)),
       body: Column(children: [
+        _BrowserPreferenceSetting(),
         _ThemeSetting(),
       ]));
   }
 }
 
+class _BrowserPreferenceSetting extends StatefulWidget {
+  const _BrowserPreferenceSetting();
+
+  @override
+  State<_BrowserPreferenceSetting> createState() => _BrowserPreferenceSettingState();
+}
+
+class _BrowserPreferenceSettingState extends State<_BrowserPreferenceSetting> {
+  late bool useExternalBrowser;
+
+  @override
+  void didChangeDependencies() {
+    super.didChangeDependencies();
+    useExternalBrowser =
+      GlobalStoreWidget.of(context).globalSettings.effectiveBrowserPreference
+      == BrowserPreference.external;
+  }
+
+  void _handleChange(bool useExternalBrowser) {
+    GlobalStoreWidget.of(context).updateGlobalSettings(
+      GlobalSettingsCompanion(browserPreference: Value(
+        useExternalBrowser ? BrowserPreference.external
+                           : BrowserPreference.embedded)));
+    setState(() {
+      this.useExternalBrowser = useExternalBrowser;
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final zulipLocalizations = ZulipLocalizations.of(context);
+    return SwitchListTile.adaptive(
+      title: Text(zulipLocalizations.settingsUseExternalBrowser),
+      value: useExternalBrowser,
+      onChanged: _handleChange);
+  }
+}
+
 class _ThemeSetting extends StatefulWidget {
   const _ThemeSetting();