Create application settings section

lib/ui/routes/account_settings/account_settings_route.dart

@@ -1,6 +1,7 @@
 import 'package:comunic/ui/routes/account_settings/account_image_settings.dart';
 import 'package:comunic/ui/routes/account_settings/account_privacy_settings.dart';
 import 'package:comunic/ui/routes/account_settings/account_security_settings.dart';
+import 'package:comunic/ui/routes/account_settings/application_settings.dart';
 import 'package:comunic/ui/routes/account_settings/custom_emojies_account_settings.dart';
 import 'package:comunic/ui/routes/account_settings/general_account_settings.dart';
 import 'package:comunic/utils/intl_utils.dart';
@@ -75,6 +76,14 @@ class __AccountSettingsBodyState extends State<_AccountSettingsBody> {
               leading: Icon(Icons.security),
               onTap: () => _openSection(AccountPrivacySettings()),
             ),
+
+            // Privacy settings
+            SettingsTile(
+              title: tr("Application settings"),
+              subtitle: tr("Manage local application settings"),
+              leading: Icon(Icons.smartphone),
+              onTap: () => _openSection(ApplicationSettings()),
+            ),
           ],
         )
       ],

lib/ui/routes/account_settings/application_settings.dart

@@ -0,0 +1,109 @@
+import 'package:comunic/helpers/preferences_helper.dart';
+import 'package:comunic/ui/widgets/async_screen_widget.dart';
+import 'package:comunic/utils/intl_utils.dart';
+import 'package:comunic/utils/ui_utils.dart';
+import 'package:flutter/material.dart';
+import 'package:settings_ui/settings_ui.dart';
+
+/// Application settings
+///
+/// @author Pierre Hubert
+
+class ApplicationSettings extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: Text(tr("Application settings"))),
+      body: _ApplicationSettingsScreen(),
+    );
+  }
+}
+
+class _ApplicationSettingsScreen extends StatefulWidget {
+  @override
+  __ApplicationSettingsScreenState createState() =>
+      __ApplicationSettingsScreenState();
+}
+
+class __ApplicationSettingsScreenState
+    extends State<_ApplicationSettingsScreen> {
+  PreferencesHelper _preferencesHelper;
+
+  Future<void> _refresh() async {
+    _preferencesHelper = await PreferencesHelper.getInstance();
+  }
+
+  @override
+  Widget build(BuildContext context) => AsyncScreenWidget(
+      onReload: _refresh,
+      onBuild: _buildSections,
+      errorMessage: tr("Could not load settings!"));
+
+  Widget _buildSections() {
+    return SettingsList(
+      sections: [_buildAppearanceSection(), _buildGeneralSection()],
+    );
+  }
+
+  /// Appearance section
+  SettingsSection _buildAppearanceSection() => SettingsSection(
+        title: tr("Appearance"),
+        tiles: [
+          _PreferencesSettingsTile(
+            preferencesKey: PreferencesKeyList.ENABLE_DARK_THEME,
+            title: tr("Enable dark theme"),
+            subtitle: null,
+            onChange: _updatedSettings,
+            helper: _preferencesHelper,
+          ),
+        ],
+      );
+
+  /// General section
+  SettingsSection _buildGeneralSection() => SettingsSection(
+        title: tr("General"),
+        tiles: [
+          SettingsTile(
+            title: tr("About this application"),
+            subtitle: tr("Learn more about us"),
+            onTap: () => showAboutAppDialog(context),
+          )
+        ],
+      );
+
+  /// Apply new settings
+  _updatedSettings() {
+    setState(() {});
+  }
+}
+
+class _PreferencesSettingsTile extends SettingsTile {
+  final PreferencesKeyList preferencesKey;
+  final String title;
+  final String subtitle;
+  final Function onChange;
+  final PreferencesHelper helper;
+
+  const _PreferencesSettingsTile({
+    @required this.preferencesKey,
+    @required this.title,
+    @required this.subtitle,
+    @required this.onChange,
+    @required this.helper,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return SettingsTile.switchTile(
+      title: title,
+      subtitle: subtitle,
+      onToggle: _doChange,
+      switchValue: helper.getBool(preferencesKey),
+    );
+  }
+
+  void _doChange(bool value) async {
+    await helper.setBool(preferencesKey, value);
+    onChange();
+  }
+}