fix: add const to constructors

lib/home.dart

@@ -49,7 +49,7 @@ class _OTLHomeState extends State<OTLHome> with SingleTickerProviderStateMixin {
         if ((await SharedPreferences.getInstance()).getBool('popup') ?? true) {
           await showDialog(
             context: context,
-            builder: (context) => PopUp(),
+            builder: (context) => const PopUp(),
           );
         }
       },
@@ -75,7 +75,7 @@ class _OTLHomeState extends State<OTLHome> with SingleTickerProviderStateMixin {
 
   PreferredSizeWidget _buildHomeAppBar() {
     return PreferredSize(
-      preferredSize: Size.fromHeight(5),
+      preferredSize: const Size.fromHeight(5),
       child: AppBar(
         flexibleSpace:
             SafeArea(child: Container(color: OTLColor.pinksMain, height: 5.0)),
@@ -89,7 +89,7 @@ class _OTLHomeState extends State<OTLHome> with SingleTickerProviderStateMixin {
 
   PreferredSizeWidget _buildTimeTableAppBar() {
     return PreferredSize(
-      preferredSize: Size.fromHeight(kToolbarHeight + 5),
+      preferredSize: const Size.fromHeight(kToolbarHeight + 5),
       child: SafeArea(
         child: Container(
           color: OTLColor.pinksLight,
@@ -138,14 +138,15 @@ class _OTLHomeState extends State<OTLHome> with SingleTickerProviderStateMixin {
           tapEffectColorRatio: 0.04,
           onTap: () => Navigator.push(context, buildCourseSearchPageRoute()),
           child: Padding(
-            padding: EdgeInsets.symmetric(horizontal: 12.0, vertical: 8.0),
+            padding:
+                const EdgeInsets.symmetric(horizontal: 12.0, vertical: 8.0),
             child: Row(
               children: [
                 SvgPicture.asset('assets/icons/search.svg',
                     height: 24.0,
                     width: 24.0,
-                    colorFilter:
-                        ColorFilter.mode(OTLColor.pinksMain, BlendMode.srcIn)),
+                    colorFilter: const ColorFilter.mode(
+                        OTLColor.pinksMain, BlendMode.srcIn)),
                 const SizedBox(width: 12.0),
                 Expanded(
                   child: context.watch<CourseSearchModel>().courseSearchquery,
@@ -169,7 +170,7 @@ class _OTLHomeState extends State<OTLHome> with SingleTickerProviderStateMixin {
 
   PreferredSizeWidget _buildReviewAppBar() {
     return PreferredSize(
-      preferredSize: Size.fromHeight(kToolbarHeight + 5),
+      preferredSize: const Size.fromHeight(kToolbarHeight + 5),
       child: SafeArea(
         child: Container(
           color: OTLColor.pinksLight,
@@ -224,7 +225,7 @@ class _OTLHomeState extends State<OTLHome> with SingleTickerProviderStateMixin {
     final layerTop = constraints.biggest.height;
     final layerAnimation = RelativeRectTween(
       begin: RelativeRect.fromLTRB(0, layerTop, 0, -layerTop),
-      end: RelativeRect.fromLTRB(0, 0, 0, 0),
+      end: const RelativeRect.fromLTRB(0, 0, 0, 0),
     ).animate(CurvedAnimation(
       parent: _controller,
       curve: Curves.easeInOut,
@@ -244,7 +245,7 @@ class _OTLHomeState extends State<OTLHome> with SingleTickerProviderStateMixin {
                   });
                 }),
                 TimetablePage(),
-                DictionaryPage(),
+                const DictionaryPage(),
                 ReviewPage(),
               ],
             ),
@@ -273,19 +274,19 @@ class _OTLHomeState extends State<OTLHome> with SingleTickerProviderStateMixin {
       },
       items: <BottomNavigationBarItem>[
         BottomNavigationBarItem(
-          icon: Icon(Icons.home_outlined),
+          icon: const Icon(Icons.home_outlined),
           label: tr("title.home"),
         ),
         BottomNavigationBarItem(
-          icon: Icon(Icons.table_chart_outlined),
+          icon: const Icon(Icons.table_chart_outlined),
           label: tr("title.timetable"),
         ),
         BottomNavigationBarItem(
-          icon: Icon(Icons.library_books_outlined),
+          icon: const Icon(Icons.library_books_outlined),
           label: tr("title.dictionary"),
         ),
         BottomNavigationBarItem(
-          icon: Icon(Icons.rate_review_outlined),
+          icon: const Icon(Icons.rate_review_outlined),
           label: tr("title.review"),
         ),
       ],

lib/main.dart

@@ -39,9 +39,9 @@ void main() {
 
     runApp(
       EasyLocalization(
-          supportedLocales: [Locale('en'), Locale('ko')],
+          supportedLocales: [const Locale('en'), const Locale('ko')],
           path: 'assets/translations',
-          fallbackLocale: Locale('en'),
+          fallbackLocale: const Locale('en'),
           child: MultiProvider(
             providers: [
               ChangeNotifierProvider(create: (context) => AuthModel()),
@@ -100,7 +100,7 @@ class OTLFirebaseApp extends StatelessWidget {
     } on Error {}
 
     SystemChrome.setSystemUIOverlayStyle(
-        SystemUiOverlayStyle(statusBarColor: Colors.transparent));
+        const SystemUiOverlayStyle(statusBarColor: Colors.transparent));
 
     return MaterialApp(
       builder: (context, child) {
@@ -118,7 +118,7 @@ class OTLFirebaseApp extends StatelessWidget {
           : LoginPage(),
       routes: {
         LikedReviewPage.route: (_) => LikedReviewPage(),
-        MyReviewPage.route: (_) => MyReviewPage(),
+        MyReviewPage.route: (_) => const MyReviewPage(),
         LectureDetailPage.route: (_) => LectureDetailPage(),
         CourseDetailPage.route: (_) => CourseDetailPage(),
       },

lib/pages/course_detail_page.dart

@@ -27,7 +27,8 @@ class CourseDetailPage extends StatelessWidget {
   Widget build(BuildContext context) {
     final CourseDetailModel courseDetailModel =
         context.watch<CourseDetailModel>();
-    final isEn = EasyLocalization.of(context)?.currentLocale == Locale('en');
+    final isEn =
+        EasyLocalization.of(context)?.currentLocale == const Locale('en');
 
     return Scaffold(
       appBar: buildAppBar(
@@ -46,8 +47,8 @@ class CourseDetailPage extends StatelessWidget {
         ),
         child: context.select<CourseDetailModel, bool>((model) => model.hasData)
             ? _buildBody(context)
-            : Center(
-                child: const CircularProgressIndicator(),
+            : const Center(
+                child: CircularProgressIndicator(),
               ),
       ),
     );
@@ -124,7 +125,8 @@ class CourseDetailPage extends StatelessWidget {
 
   ChoiceChip _buildChoiceChip(
       BuildContext context, String selectedFilter, Professor? professor) {
-    final isEn = EasyLocalization.of(context)?.currentLocale == Locale('en');
+    final isEn =
+        EasyLocalization.of(context)?.currentLocale == const Locale('en');
 
     return ChoiceChip(
       selectedColor: OTLColor.pinksSub,
@@ -206,7 +208,8 @@ class CourseDetailPage extends StatelessWidget {
   }
 
   Column _buildAttribute(BuildContext context, Course course) {
-    final isEn = EasyLocalization.of(context)?.currentLocale == Locale('en');
+    final isEn =
+        EasyLocalization.of(context)?.currentLocale == const Locale('en');
 
     return Column(
       children: <Widget>[
@@ -252,7 +255,8 @@ class CourseDetailPage extends StatelessWidget {
     final _scrollController = ScrollController();
     final years = context.select<InfoModel, Set<int>>((model) => model.years);
     final courseDetailModel = context.watch<CourseDetailModel>();
-    final isEn = EasyLocalization.of(context)?.currentLocale == Locale('en');
+    final isEn =
+        EasyLocalization.of(context)?.currentLocale == const Locale('en');
 
     return Scrollbar(
       controller: _scrollController,
@@ -299,7 +303,8 @@ class CourseDetailPage extends StatelessWidget {
 
   Widget _buildHistoryRow(BuildContext context, List<Lecture> lectures,
       Set<int> years, int semester, String selectedFilter) {
-    final isEn = EasyLocalization.of(context)?.currentLocale == Locale('en');
+    final isEn =
+        EasyLocalization.of(context)?.currentLocale == const Locale('en');
 
     return IntrinsicHeight(
       child: Row(

lib/pages/course_search_page.dart

@@ -50,7 +50,7 @@ class _CourseSearchPageState extends State<CourseSearchPage> {
             IconTextButton(
               onTap: () => Navigator.pop(context),
               icon: Icons.navigate_before,
-              padding: EdgeInsets.fromLTRB(0, 16, 16, 16),
+              padding: const EdgeInsets.fromLTRB(0, 16, 16, 16),
             ),
             Expanded(
               child: SearchTextfield(
@@ -112,7 +112,8 @@ class _CourseSearchPageState extends State<CourseSearchPage> {
                       style: bodyBold.copyWith(color: OTLColor.pinksMain),
                     ),
                     style: ButtonStyle(
-                      backgroundColor: MaterialStatePropertyAll(OTLColor.grayF),
+                      backgroundColor:
+                          const MaterialStatePropertyAll(OTLColor.grayF),
                       shape: MaterialStatePropertyAll(
                         RoundedRectangleBorder(
                           borderRadius: BorderRadius.circular(8.0),
@@ -121,7 +122,7 @@ class _CourseSearchPageState extends State<CourseSearchPage> {
                     ),
                   ),
                 ),
-                SizedBox(
+                const SizedBox(
                   width: 12,
                 ),
                 Expanded(

lib/pages/dictionary_page.dart

@@ -49,7 +49,7 @@ class _DictionaryPageState extends State<DictionaryPage> {
               controller: _scrollController,
               child: ListView.separated(
                 controller: _scrollController,
-                padding: EdgeInsets.all(12.0),
+                padding: const EdgeInsets.all(12.0),
                 itemCount: searchModel.courses?.length ?? 0,
                 itemBuilder: (context, index) => CourseBlock(
                   course: searchModel.courses![index],
@@ -60,7 +60,8 @@ class _DictionaryPageState extends State<DictionaryPage> {
                     Navigator.push(context, buildCourseDetailPageRoute());
                   },
                 ),
-                separatorBuilder: (context, index) => SizedBox(height: 8.0),
+                separatorBuilder: (context, index) =>
+                    const SizedBox(height: 8.0),
               ),
             );
           }
@@ -74,7 +75,7 @@ Widget _buildCopyRight() {
   return Text.rich(
     TextSpan(
       style: labelRegular.copyWith(color: OTLColor.grayA),
-      children: [
+      children: const [
         TextSpan(text: 'otlplus@sparcs.org'),
         TextSpan(text: '\n'),
         TextSpan(text: '© 2023 SPARCS OTL Team'),

lib/pages/lecture_detail_page.dart

@@ -37,7 +37,8 @@ class LectureDetailPage extends StatelessWidget {
   Widget build(BuildContext context) {
     final LectureDetailModel lectureDetailModel =
         context.watch<LectureDetailModel>();
-    final isEn = EasyLocalization.of(context)?.currentLocale == Locale('en');
+    final isEn =
+        EasyLocalization.of(context)?.currentLocale == const Locale('en');
 
     return Scaffold(
       appBar: buildAppBar(
@@ -57,8 +58,8 @@ class LectureDetailPage extends StatelessWidget {
         child:
             context.select<LectureDetailModel, bool>((model) => model.hasData)
                 ? _buildBody(context)
-                : Center(
-                    child: const CircularProgressIndicator(),
+                : const Center(
+                    child: CircularProgressIndicator(),
                   ),
       ),
     );
@@ -115,7 +116,7 @@ class LectureDetailPage extends StatelessWidget {
                       "시간이 겹치는 수업이 있습니다. 추가하시면 해당 수업은 삭제됩니다.\n시간표에 추가하시겠습니까?"),
                   actions: [
                     IconTextButton(
-                      padding: EdgeInsets.all(12),
+                      padding: const EdgeInsets.all(12),
                       text: 'common.cancel'.tr(),
                       color: OTLColor.pinksMain,
                       onTap: () {
@@ -124,7 +125,7 @@ class LectureDetailPage extends StatelessWidget {
                       },
                     ),
                     IconTextButton(
-                      padding: EdgeInsets.all(12),
+                      padding: const EdgeInsets.all(12),
                       text: 'common.add'.tr(),
                       color: OTLColor.pinksMain,
                       onTap: () {
@@ -165,7 +166,7 @@ class LectureDetailPage extends StatelessWidget {
         IconTextButton(
           onTap: () => FlutterWebBrowser.openWebPage(
             url: _getSyllabusUrl(lecture),
-            customTabsOptions: CustomTabsOptions(
+            customTabsOptions: const CustomTabsOptions(
               colorScheme: CustomTabsColorScheme.light,
               defaultColorSchemeParams: CustomTabsColorSchemeParams(
                   toolbarColor: OTLColor.pinksLight),
@@ -174,7 +175,7 @@ class LectureDetailPage extends StatelessWidget {
               showTitle: true,
               urlBarHidingEnabled: true,
             ),
-            safariVCOptions: SafariViewControllerOptions(
+            safariVCOptions: const SafariViewControllerOptions(
               barCollapsingEnabled: true,
               dismissButtonStyle: SafariViewControllerDismissButtonStyle.close,
               modalPresentationCapturesStatusBarAppearance: true,
@@ -332,7 +333,8 @@ class LectureDetailPage extends StatelessWidget {
   }
 
   Widget _buildAttributes(BuildContext context, Lecture lecture) {
-    final isEn = EasyLocalization.of(context)?.currentLocale == Locale('en');
+    final isEn =
+        EasyLocalization.of(context)?.currentLocale == const Locale('en');
 
     return Column(
       children: [

lib/pages/lecture_search_page.dart

@@ -51,7 +51,7 @@ class _LectureSearchPageState extends State<LectureSearchPage> {
             IconTextButton(
               onTap: () => Navigator.pop(context),
               icon: Icons.navigate_before,
-              padding: EdgeInsets.fromLTRB(0, 16, 16, 16),
+              padding: const EdgeInsets.fromLTRB(0, 16, 16, 16),
             ),
             Expanded(
               child: SearchTextfield(
@@ -112,7 +112,8 @@ class _LectureSearchPageState extends State<LectureSearchPage> {
                       style: bodyBold.copyWith(color: OTLColor.pinksMain),
                     ),
                     style: ButtonStyle(
-                      backgroundColor: MaterialStatePropertyAll(OTLColor.grayF),
+                      backgroundColor:
+                          const MaterialStatePropertyAll(OTLColor.grayF),
                       shape: MaterialStatePropertyAll(
                         RoundedRectangleBorder(
                           borderRadius: BorderRadius.circular(8.0),
@@ -121,7 +122,7 @@ class _LectureSearchPageState extends State<LectureSearchPage> {
                     ),
                   ),
                 ),
-                SizedBox(
+                const SizedBox(
                   width: 12,
                 ),
                 Expanded(

lib/pages/liked_review_page.dart

@@ -74,10 +74,10 @@ class LikedReviewPage extends StatelessWidget {
                             ),
                             SliverList(
                                 delegate: SliverChildListDelegate([
-                              Padding(
-                                padding: const EdgeInsets.only(
-                                    top: 4.0, bottom: 12.0),
-                                child: const Center(
+                              const Padding(
+                                padding:
+                                    EdgeInsets.only(top: 4.0, bottom: 12.0),
+                                child: Center(
                                   child: SizedBox(
                                     width: 24,
                                     height: 24,

lib/pages/login_page.dart

@@ -25,8 +25,8 @@ class _LoginPageState extends State<LoginPage> {
       body: Material(
         child: Stack(
           children: <Widget>[
-            Center(
-              child: const CircularProgressIndicator(),
+            const Center(
+              child: CircularProgressIndicator(),
             ),
             _buildBody(context),
           ],