feat: use CheckedPopupMenuItem instead of PopupMenuItem; use DefaultTextStyle to reduce duplicate code.

app/lib/constants/supported_locales.dart

@@ -18,5 +18,7 @@ const supportedLocaleNames = {
   SupportedLocale.en: 'English',
 };
 
-Locale getSupportedLocale(SupportedLocale supportedLocale) => supportedLocales[supportedLocale.index];
+Locale transformSupportedLocale(SupportedLocale supportedLocale) => supportedLocales[supportedLocale.index];
 
+SupportedLocale? getSupportedLocale(Locale? locale) =>
+    supportedLocales.contains(locale) ? SupportedLocale.values[supportedLocales.indexOf(locale!)] : null;

app/lib/pages/gesture_editor.dart

@@ -167,7 +167,7 @@ List<DDataRow> _buildDataRows(List<GestureProp>? gestures, BuildContext context)
           }
         },
         selected: selected,
-        cells: editing ? _buildRowCellsEditing(gesture) : _buildRowCellsNormal(selected, gesture),
+        cells: editing ? _buildRowCellsEditing(gesture) : _buildRowCellsNormal(context, selected, gesture),
       );
     }).toList();
 
@@ -180,51 +180,37 @@ List<DDataCell> _buildRowCellsEditing(GestureProp gesture) => [
       TextField(controller: TextEditingController(text: gesture.remark)),
     ].map((e) => DDataCell(e)).toList();
 
-List<DDataCell> _buildRowCellsNormal(bool selected, GestureProp gesture) => [
+List<DDataCell> _buildRowCellsNormal(BuildContext context, bool selected, GestureProp gesture) => [
       Center(
         child: Text(
           '${LocaleKeys.gesture_editor_gestures}.${H.getGestureName(gesture.gesture)}',
-          style: TextStyle(
-            color: selected ? Colors.white : null,
-          ),
         ).tr(),
       ),
       Center(
           child: Text(
         '${LocaleKeys.gesture_editor_directions}.${H.getGestureDirectionName(gesture.direction)}',
-        style: TextStyle(
-          color: selected ? Colors.white : null,
-        ),
       ).tr()),
       Center(
         child: Text(
           '${gesture.fingers}',
-          style: TextStyle(
-            color: selected ? Colors.white : null,
-          ),
         ),
       ),
       Center(
           child: Text(
         '${LocaleKeys.gesture_editor_types}.${H.getGestureTypeName(gesture.type)}',
-        style: TextStyle(
-          color: selected ? Colors.white : null,
-        ),
       ).tr()),
       Text(
         gesture.command ?? '',
-        style: TextStyle(
-          color: selected ? Colors.white : null,
-        ),
       ),
       Text(
         gesture.remark ?? '',
-        style: TextStyle(
-          color: selected ? Colors.white : null,
-        ),
       ),
     ]
         .map(
-          (ele) => DDataCell(ele),
+          (ele) => DDataCell(DefaultTextStyle(
+              style: context.t.textTheme.bodyText2!.copyWith(
+                color: selected ? Colors.white : null,
+              ),
+              child: ele)),
         )
         .toList();

app/lib/pages/local_manager.dart

@@ -123,6 +123,10 @@ class _LocalManagerState extends State<LocalManager> {
                                       color: _getItemBackgroundColor(index),
                                       child: Padding(
                                         padding: const EdgeInsets.only(left: 6, right: 12.0),
+                                        child: DefaultTextStyle(
+                                          style: context.t.textTheme.bodyText2!.copyWith(
+                                            color: _selectedIndex == index ? Colors.white : null,
+                                          ),
                                           child: Row(
                                             mainAxisAlignment: MainAxisAlignment.spaceBetween,
                                             children: [
@@ -134,6 +138,7 @@ class _LocalManagerState extends State<LocalManager> {
                                       ),
                                     ),
                                   ),
+                                ),
                                 itemCount: localSchemes.length,
                               ),
                             ),

app/lib/widgets/language_switcher.dart

@@ -1,4 +1,3 @@
-import 'package:collection/collection.dart';
 import 'package:dde_gesture_manager/constants/sp_keys.dart';
 import 'package:dde_gesture_manager/constants/supported_locales.dart';
 import 'package:dde_gesture_manager/extensions.dart';
@@ -6,7 +5,6 @@ import 'package:dde_gesture_manager/generated/codegen_loader.g.dart';
 import 'package:dde_gesture_manager/generated/locale_keys.g.dart';
 import 'package:dde_gesture_manager/models/local_schemes_provider.dart';
 import 'package:dde_gesture_manager/utils/helper.dart';
-import 'package:flutter/cupertino.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:window_manager/window_manager.dart';
@@ -18,7 +16,7 @@ class LanguageSwitcher extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     var _locale = EasyLocalization.of(context)?.currentLocale;
-    var _supportedLocale = supportedLocales.firstWhereOrNull((element) => element == _locale);
+    var _supportedLocale = getSupportedLocale(_locale) ?? SupportedLocale.zh_CN;
 
     return PopupMenuButton<SupportedLocale>(
       tooltip: LocaleKeys.language_tip.tr(),
@@ -31,19 +29,9 @@ class LanguageSwitcher extends StatelessWidget {
           ),
         ],
       ),
-      itemBuilder: (BuildContext context) => supportedLocales
-          .map(
-            (locale) => PopupMenuItem(
-              value: SupportedLocale.zh_CN,
-              child: ListTile(
-                leading: Visibility(
-                  child: Icon(CupertinoIcons.check_mark),
-                  visible: _supportedLocale == locale,
-                ),
-                title: Text(supportedLocaleNames[SupportedLocale.values[supportedLocales.indexOf(locale)]] ?? ''),
-              ),
-              onTap: () {
-                EasyLocalization.of(context)?.setLocale(locale).then((_) {
+      initialValue: _supportedLocale,
+      onSelected: (value) {
+        EasyLocalization.of(context)?.setLocale(transformSupportedLocale(value)).then((_) {
           var localeMap = Translations(CodegenLoader.mapLocales[context.locale.toString()]!);
           if (!kIsWeb) WindowManager.instance.setTitle(localeMap.get(LocaleKeys.app_name)!);
           var localSchemesProvider = context.read<LocalSchemesProvider>();
@@ -56,8 +44,14 @@ class LanguageSwitcher extends StatelessWidget {
           ];
           localSchemesProvider.setProps(schemes: newSchemes);
         });
-                H().sp.setInt(SPKeys.userLanguage, supportedLocales.indexOf(locale));
+        H().sp.setInt(SPKeys.userLanguage, value.index);
       },
+      itemBuilder: (BuildContext context) => SupportedLocale.values
+          .map(
+            (supportedLocale) => CheckedPopupMenuItem(
+              value: supportedLocale,
+              checked: EasyLocalization.of(context)?.locale == transformSupportedLocale(supportedLocale),
+              child: Text(supportedLocaleNames[supportedLocale] ?? ''),
             ),
           )
           .toList(),

app/lib/widgets/theme_switcher.dart

@@ -11,7 +11,7 @@ class ThemeSwitcher extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     var _brightnessMode = context.watch<ConfigsProvider>().brightnessMode;
-    return PopupMenuButton(
+    return PopupMenuButton<BrightnessMode>(
       initialValue: _brightnessMode,
       child: Row(
         children: [
@@ -23,35 +23,23 @@ class ThemeSwitcher extends StatelessWidget {
         ],
       ),
       padding: EdgeInsets.zero,
+      onSelected: (value) => context.read<ConfigsProvider>().setProps(brightnessMode: value),
       tooltip: LocaleKeys.theme_tip.tr(),
       itemBuilder: (BuildContext context) => [
-        PopupMenuItem<BrightnessMode>(
-          child: ListTile(
-            leading: Visibility(
-              child: Icon(CupertinoIcons.check_mark),
-              visible: _brightnessMode == BrightnessMode.system,
+        CheckedPopupMenuItem<BrightnessMode>(
+          child: Text(LocaleKeys.theme_system).tr(),
+          checked: _brightnessMode == BrightnessMode.system,
+          value: BrightnessMode.system,
         ),
-            title: Text(LocaleKeys.theme_system).tr(),
+        CheckedPopupMenuItem<BrightnessMode>(
+          child: Text(LocaleKeys.theme_light).tr(),
+          checked: _brightnessMode == BrightnessMode.light,
+          value: BrightnessMode.light,
         ),
-          onTap: () => context.read<ConfigsProvider>().setProps(brightnessMode: BrightnessMode.system),
-        ),
-        PopupMenuItem<BrightnessMode>(
-          child: ListTile(
-              leading: Visibility(
-                child: Icon(CupertinoIcons.check_mark),
-                visible: _brightnessMode == BrightnessMode.light,
-              ),
-              title: Text(LocaleKeys.theme_light).tr()),
-          onTap: () => context.read<ConfigsProvider>().setProps(brightnessMode: BrightnessMode.light),
-        ),
-        PopupMenuItem<BrightnessMode>(
-          child: ListTile(
-              leading: Visibility(
-                child: Icon(CupertinoIcons.check_mark),
-                visible: _brightnessMode == BrightnessMode.dark,
-              ),
-              title: Text(LocaleKeys.theme_dark).tr()),
-          onTap: () => context.read<ConfigsProvider>().setProps(brightnessMode: BrightnessMode.dark),
+        CheckedPopupMenuItem<BrightnessMode>(
+          child: Text(LocaleKeys.theme_dark).tr(),
+          checked: _brightnessMode == BrightnessMode.dark,
+          value: BrightnessMode.dark,
         ),
       ],
     );