TF-495 Implement linter for mailbox view

lib/features/mailbox/data/datasource_impl/state_datasource_impl.dart

@@ -16,7 +16,7 @@ class StateDataSourceImpl extends StateDataSource {
   Future<State?> getState(StateType stateType) {
     return Future.sync(() async {
       final stateCache = await _stateCacheClient.getItem(stateType.value);
-      return stateCache != null ? stateCache.toState() : null;
+      return stateCache?.toState();
     }).catchError((error) {
       throw error;
     });

lib/features/mailbox/data/extensions/list_mailbox_cache_extension.dart

@@ -3,9 +3,6 @@ import 'package:tmail_ui_user/features/mailbox/data/model/mailbox_cache.dart';
 
 extension ListMailboxCacheExtension on List<MailboxCache> {
   Map<String, MailboxCache> toMap() {
-    return Map<String, MailboxCache>.fromIterable(
+    return { for (var mailboxCache in this) mailboxCache.id : mailboxCache };
-        this,
-        key: (mailboxCache) => mailboxCache.id,
-        value: (mailboxCache) => mailboxCache);
   }
 }

lib/features/mailbox/data/network/mailbox_api.dart

@@ -158,14 +158,14 @@ class MailboxAPI {
       final requestBuilder = JmapRequestBuilder(httpClient, ProcessingInvocation());
       final currentSetMailboxInvocations = currentExecuteList.map((mailboxId) {
           return SetMailboxMethod(accountId)
-            ..addDestroy(Set.of([mailboxId.id]))
+            ..addDestroy({mailboxId.id})
             ..addOnDestroyRemoveEmails(true);
           })
         .map(requestBuilder.invocation)
         .toList();
 
       final response = await (requestBuilder
-          ..usings(Set.of([CapabilityIdentifier.jmapCore, CapabilityIdentifier.jmapMail])))
+          ..usings({CapabilityIdentifier.jmapCore, CapabilityIdentifier.jmapMail}))
         .build()
         .execute();
 

lib/features/mailbox/domain/extensions/list_mailbox_extension.dart

@@ -4,7 +4,7 @@ import 'package:jmap_dart_client/jmap/mail/mailbox/mailbox.dart';
 import 'package:model/model.dart';
 
 extension ListMailboxExtensions on List<Mailbox> {
-  Tuple2<List<PresentationMailbox>, List<PresentationMailbox>> splitMailboxList(bool test(Mailbox element)) {
+  Tuple2<List<PresentationMailbox>, List<PresentationMailbox>> splitMailboxList(bool Function(Mailbox element) test) {
     final validBuilder = ListBuilder<PresentationMailbox>();
     final invalidBuilder = ListBuilder<PresentationMailbox>();
     forEach((element) {

lib/features/mailbox/domain/state/create_new_mailbox_state.dart

@@ -12,7 +12,7 @@ class CreateNewMailboxSuccess extends UIState {
 }
 
 class CreateNewMailboxFailure extends FeatureFailure {
-  final exception;
+  final dynamic exception;
 
   CreateNewMailboxFailure(this.exception);
 

lib/features/mailbox/domain/state/delete_multiple_mailbox_state.dart

@@ -12,7 +12,7 @@ class DeleteMultipleMailboxSuccess extends UIState {
 }
 
 class DeleteMultipleMailboxFailure extends FeatureFailure {
-  final exception;
+  final dynamic exception;
 
   DeleteMultipleMailboxFailure(this.exception);
 

lib/features/mailbox/domain/state/get_all_mailboxes_state.dart

@@ -16,7 +16,7 @@ class GetAllMailboxSuccess extends UIState {
 }
 
 class GetAllMailboxFailure extends FeatureFailure {
-  final exception;
+  final dynamic exception;
 
   GetAllMailboxFailure(this.exception);
 

lib/features/mailbox/domain/state/refresh_changes_all_mailboxes_state.dart

@@ -16,7 +16,7 @@ class RefreshChangesAllMailboxSuccess extends UIState {
 }
 
 class RefreshChangesAllMailboxFailure extends FeatureFailure {
-  final exception;
+  final dynamic exception;
 
   RefreshChangesAllMailboxFailure(this.exception);
 

lib/features/mailbox/domain/state/rename_mailbox_state.dart

@@ -9,7 +9,7 @@ class RenameMailboxSuccess extends UIState {
 }
 
 class RenameMailboxFailure extends FeatureFailure {
-  final exception;
+  final dynamic exception;
 
   RenameMailboxFailure(this.exception);
 

lib/features/mailbox/domain/state/search_mailbox_state.dart

@@ -12,7 +12,7 @@ class SearchMailboxSuccess extends UIState {
 }
 
 class SearchMailboxFailure extends FeatureFailure {
-  final exception;
+  final dynamic exception;
 
   SearchMailboxFailure(this.exception);
 

lib/features/mailbox/presentation/mailbox_bindings.dart

@@ -35,7 +35,7 @@ class MailboxBindings extends BaseBindings {
 
   void _bindingsUtils() {
     Get.lazyPut(() => TreeBuilder());
-    Get.lazyPut(() => Uuid());
+    Get.lazyPut(() => const Uuid());
   }
 
   @override

lib/features/mailbox/presentation/mailbox_controller.dart

@@ -8,7 +8,7 @@ import 'package:flutter_svg/flutter_svg.dart';
 import 'package:get/get.dart';
 import 'package:jmap_dart_client/jmap/account_id.dart';
 import 'package:jmap_dart_client/jmap/core/id.dart';
-import 'package:jmap_dart_client/jmap/core/state.dart' as jmapState;
+import 'package:jmap_dart_client/jmap/core/state.dart' as jmap_state;
 import 'package:jmap_dart_client/jmap/mail/mailbox/mailbox.dart';
 import 'package:model/model.dart';
 import 'package:pointer_interceptor/pointer_interceptor.dart';
@@ -89,7 +89,7 @@ class MailboxController extends BaseMailboxController {
   final searchFocus = FocusNode();
   final mailboxListScrollController = ScrollController();
 
-  jmapState.State? currentMailboxState;
+  jmap_state.State? currentMailboxState;
   List<String> listMailboxNameAsStringExist = <String>[];
 
   MailboxController(
@@ -154,7 +154,7 @@ class MailboxController extends BaseMailboxController {
       );
     });
 
-    _openMailboxEventController.stream.throttleTime(Duration(milliseconds: 800)).listen((event) {
+    _openMailboxEventController.stream.throttleTime(const Duration(milliseconds: 800)).listen((event) {
       _handleOpenMailbox(event.buildContext, event.presentationMailbox);
     });
 
@@ -253,20 +253,11 @@ class MailboxController extends BaseMailboxController {
 
   void _setUpMapMailboxIdDefault(List<PresentationMailbox> allMailbox, MailboxTree defaultTree, MailboxTree folderTree) {
 
-    final mapDefaultMailboxId = Map<Role, MailboxId>.fromIterable(
+    final mapDefaultMailboxId = { for (var mailboxNode in defaultTree.root.childrenItems ?? List<MailboxNode>.empty()) mailboxNode.item.role! : mailboxNode.item.id };
-      defaultTree.root.childrenItems ?? List<MailboxNode>.empty(),
-      key: (mailboxNode) => mailboxNode.item.role!,
-      value: (mailboxNode) => mailboxNode.item.id);
 
-    final mapDefaultMailbox = Map<Role, PresentationMailbox>.fromIterable(
+    final mapDefaultMailbox = { for (var mailboxNode in defaultTree.root.childrenItems ?? List<MailboxNode>.empty()) mailboxNode.item.role! : mailboxNode.item };
-      defaultTree.root.childrenItems ?? List<MailboxNode>.empty(),
-      key: (mailboxNode) => mailboxNode.item.role!,
-      value: (mailboxNode) => mailboxNode.item);
 
-    final mapMailbox = Map<MailboxId, PresentationMailbox>.fromIterable(
+    final mapMailbox = { for (var presentationMailbox in allMailbox) presentationMailbox.id : presentationMailbox };
-      allMailbox,
-      key: (presentationMailbox) => presentationMailbox.id,
-      value: (presentationMailbox) => presentationMailbox);
 
     mailboxDashBoardController.setMapDefaultMailboxId(mapDefaultMailboxId);
 
@@ -499,12 +490,12 @@ class MailboxController extends BaseMailboxController {
           context: context,
           barrierColor: AppColor.colorDefaultCupertinoActionSheet,
           builder: (BuildContext context) => PointerInterceptor(child: (ConfirmDialogBuilder(_imagePaths)
-              ..key(Key('confirm_dialog_delete_mailbox'))
+              ..key(const Key('confirm_dialog_delete_mailbox'))
               ..title(AppLocalizations.of(context).delete_mailboxes)
               ..content(AppLocalizations.of(context).message_confirmation_dialog_delete_mailbox(presentationMailbox.name?.name ?? ''))
               ..addIcon(SvgPicture.asset(_imagePaths.icRemoveDialog, fit: BoxFit.fill))
               ..colorConfirmButton(AppColor.colorConfirmActionDialog)
-              ..styleTextConfirmButton(TextStyle(fontSize: 17, fontWeight: FontWeight.w500, color: AppColor.colorActionDeleteConfirmDialog))
+              ..styleTextConfirmButton(const TextStyle(fontSize: 17, fontWeight: FontWeight.w500, color: AppColor.colorActionDeleteConfirmDialog))
               ..onCloseButtonAction(() => popBack())
               ..onConfirmButtonAction(AppLocalizations.of(context).delete, () => _deleteMailboxAction(presentationMailbox))
               ..onCancelButtonAction(AppLocalizations.of(context).cancel, () => popBack()))
@@ -552,7 +543,7 @@ class MailboxController extends BaseMailboxController {
   void _switchBackToMailboxDefault() {
     final inboxMailbox = findMailboxNodeByRole(PresentationMailbox.roleInbox);
     mailboxDashBoardController.setSelectedMailbox(inboxMailbox?.item);
-    mailboxListScrollController.animateTo(0, duration: Duration(milliseconds: 500), curve: Curves.fastOutSlowIn);
+    mailboxListScrollController.animateTo(0, duration: const Duration(milliseconds: 500), curve: Curves.fastOutSlowIn);
   }
 
   void _deleteMailboxFailure(DeleteMultipleMailboxFailure failure) {
@@ -569,11 +560,11 @@ class MailboxController extends BaseMailboxController {
 
     if (_responsiveUtils.isMobile(context)) {
       (EditTextModalSheetBuilder()
-          ..key(Key('rename_mailbox_modal_sheet'))
+          ..key(const Key('rename_mailbox_modal_sheet'))
           ..title(AppLocalizations.of(context).rename_mailbox)
           ..cancelText(AppLocalizations.of(context).cancel)
           ..boxConstraints(_responsiveUtils.isMobileDevice(context) && _responsiveUtils.isLandscape(context)
-              ? BoxConstraints(maxWidth: 400)
+              ? const BoxConstraints(maxWidth: 400)
               : null)
           ..onConfirmAction(AppLocalizations.of(context).rename,
               (value) => _renameMailboxAction(presentationMailbox, value))
@@ -593,7 +584,7 @@ class MailboxController extends BaseMailboxController {
           barrierColor: AppColor.colorDefaultCupertinoActionSheet,
           builder: (BuildContext context) =>
               PointerInterceptor(child: (EditTextDialogBuilder()
-                  ..key(Key('rename_mailbox_dialog'))
+                  ..key(const Key('rename_mailbox_dialog'))
                   ..title(AppLocalizations.of(context).rename_mailbox)
                   ..cancelText(AppLocalizations.of(context).cancel)
                   ..setErrorString((value) => getErrorInputNameStringRenameMailbox(context, value))

lib/features/mailbox/presentation/mailbox_view.dart

@@ -20,6 +20,8 @@ class MailboxView extends GetWidget<MailboxController> {
   final _imagePaths = Get.find<ImagePaths>();
   final _responsiveUtils = Get.find<ResponsiveUtils>();
 
+  MailboxView({Key? key}) : super(key: key);
+
   @override
   Widget build(BuildContext context) {
     return _buildBodyMailbox(context);
@@ -29,8 +31,8 @@ class MailboxView extends GetWidget<MailboxController> {
     return SafeArea(bottom: false, left: false, right: false, top: _responsiveUtils.isMobile(context),
         child: ClipRRect(
             borderRadius: _responsiveUtils.isMobile(context) && _responsiveUtils.isPortrait(context)
-              ? BorderRadius.only(topRight: Radius.circular(14), topLeft: Radius.circular(14))
+              ? const BorderRadius.only(topRight: Radius.circular(14), topLeft: Radius.circular(14))
-              : BorderRadius.all(Radius.zero),
+              : const BorderRadius.all(Radius.zero),
             child: Drawer(
                 child: Scaffold(
                   backgroundColor: _responsiveUtils.isDesktop(context) ? AppColor.colorBgDesktop : Colors.white,
@@ -44,10 +46,10 @@ class MailboxView extends GetWidget<MailboxController> {
                               Expanded(child: _buildSearchBarWidget(context)),
                               _buildAddNewFolderButton(context),
                             ])
-                          : SizedBox.shrink()),
+                          : const SizedBox.shrink()),
                       Obx(() => controller.isSearchActive()
                           ? SafeArea(bottom: false, top: false, right: false, child: _buildInputSearchFormWidget(context))
-                          : SizedBox.shrink()),
+                          : const SizedBox.shrink()),
                       Expanded(child: Obx(() => Container(
                         color: _responsiveUtils.isDesktop(context)
                             ? Colors.transparent
@@ -69,19 +71,19 @@ class MailboxView extends GetWidget<MailboxController> {
                                         child: _buildListMailbox(context)))
                         ),
                       ))),
-                      Obx(() => controller.isSelectionEnabled() ? _buildOptionSelectionMailbox(context) : SizedBox.shrink()),
+                      Obx(() => controller.isSelectionEnabled() ? _buildOptionSelectionMailbox(context) : const SizedBox.shrink()),
                     ]),
                     Obx(() {
                       if (controller.mailboxDashBoardController.appInformation.value != null
                           && !controller.isSearchActive() && !controller.isSelectionEnabled()) {
                         if (_responsiveUtils.isMobile(context) && _responsiveUtils.isLandscape(context)) {
-                          return SizedBox.shrink();
+                          return const SizedBox.shrink();
                         }
                         return Align(
                             alignment: Alignment.bottomCenter,
                             child: _buildVersionInformation(context, controller.mailboxDashBoardController.appInformation.value!));
                       } else {
-                        return SizedBox.shrink();
+                        return const SizedBox.shrink();
                       }
                     })
                   ]),
@@ -94,11 +96,11 @@ class MailboxView extends GetWidget<MailboxController> {
   Widget _buildLogoApp(BuildContext context) {
     return Container(
         color: Colors.white,
-        padding: EdgeInsets.only(left: 32, top: 20, bottom: 24),
+        padding: const EdgeInsets.only(left: 32, top: 20, bottom: 24),
         child: (SloganBuilder(arrangedByHorizontal: true)
             ..setSloganText(AppLocalizations.of(context).app_name)
             ..setSloganTextAlign(TextAlign.center)
-            ..setSloganTextStyle(TextStyle(color: Colors.black, fontSize: 25, fontWeight: FontWeight.bold))
+            ..setSloganTextStyle(const TextStyle(color: Colors.black, fontSize: 25, fontWeight: FontWeight.bold))
             ..setSizeLogo(24)
             ..setLogo(_imagePaths.icLogoTMail))
           .build());
@@ -114,13 +116,13 @@ class MailboxView extends GetWidget<MailboxController> {
             mainAxisAlignment: MainAxisAlignment.center,
             children: [
               _responsiveUtils.isMobile(context) || _responsiveUtils.isTablet(context)
-                  ? Padding(padding: EdgeInsets.only(left: 10), child: _buildCloseScreenButton(context))
+                  ? Padding(padding: const EdgeInsets.only(left: 10), child: _buildCloseScreenButton(context))
-                  : SizedBox(width: 50),
+                  : const SizedBox(width: 50),
               Obx(() {
                 if (controller.isSearchActive()) {
                   return controller.listMailboxSearched.isNotEmpty
                       ? SizedBox(width: controller.isSelectionEnabled() ? 49 : 40)
-                      : SizedBox.shrink();
+                      : const SizedBox.shrink();
                 } else {
                   return SizedBox(width: controller.isSelectionEnabled() ? 49 : 40);
                 }
@@ -128,22 +130,22 @@ class MailboxView extends GetWidget<MailboxController> {
               Expanded(child: Text(
                 AppLocalizations.of(context).folders,
                 textAlign: TextAlign.center,
-                style: TextStyle(fontSize: 21, color: Colors.black, fontWeight: FontWeight.bold))),
+                style: const TextStyle(fontSize: 21, color: Colors.black, fontWeight: FontWeight.bold))),
               Obx(() {
                 if (controller.isSearchActive()) {
                   return controller.listMailboxSearched.isNotEmpty
                       ? _buildEditMailboxButton(context, controller.isSelectionEnabled())
-                      : SizedBox(width: 25);
+                      : const SizedBox(width: 25);
                 } else {
                   return _buildEditMailboxButton(context, controller.isSelectionEnabled());
                 }
               }),
-              Padding(padding: EdgeInsets.only(right: 5), child: _buildAddNewFolderButton(context)),
+              Padding(padding: const EdgeInsets.only(right: 5), child: _buildAddNewFolderButton(context)),
             ]
           )
         ),
         if (!_responsiveUtils.isTabletLarge(context))
-          Divider(color: AppColor.colorDividerMailbox, height: 0.5, thickness: 0.2),
+          const Divider(color: AppColor.colorDividerMailbox, height: 0.5, thickness: 0.2),
       ]
     );
   }
@@ -151,19 +153,19 @@ class MailboxView extends GetWidget<MailboxController> {
   Widget _buildComposerButton(BuildContext context) {
     return Row(children: [
       Expanded(child: Container(
-          padding: EdgeInsets.only(top: 16, left: 20),
+          padding: const EdgeInsets.only(top: 16, left: 20),
           color: AppColor.colorBgDesktop,
           alignment: Alignment.centerLeft,
           child: (ButtonBuilder(_imagePaths.icCompose)
-              ..key(Key('button_compose_email'))
+              ..key(const Key('button_compose_email'))
               ..decoration(BoxDecoration(borderRadius: BorderRadius.circular(25), color: AppColor.colorTextButton))
-              ..paddingIcon(EdgeInsets.only(right: 8))
+              ..paddingIcon(const EdgeInsets.only(right: 8))
               ..iconColor(Colors.white)
               ..maxWidth(140)
               ..size(20)
               ..radiusSplash(10)
-              ..padding(EdgeInsets.symmetric(vertical: 13))
+              ..padding(const EdgeInsets.symmetric(vertical: 13))
-              ..textStyle(TextStyle(fontSize: 15, color: Colors.white, fontWeight: FontWeight.w500))
+              ..textStyle(const TextStyle(fontSize: 15, color: Colors.white, fontWeight: FontWeight.w500))
               ..onPressActionClick(() => controller.mailboxDashBoardController.composeEmailAction())
               ..text(AppLocalizations.of(context).compose, isVertical: false))
             .build())
@@ -172,12 +174,12 @@ class MailboxView extends GetWidget<MailboxController> {
         if (controller.isSearchActive()) {
           return controller.listMailboxSearched.isNotEmpty
               ? Padding(
-                  padding: EdgeInsets.only(top: 16),
+                  padding: const EdgeInsets.only(top: 16),
                   child: _buildEditMailboxButton(context, controller.isSelectionEnabled()))
-              : SizedBox.shrink();
+              : const SizedBox.shrink();
         } else {
           return Padding(
-              padding: EdgeInsets.only(top: 16),
+              padding: const EdgeInsets.only(top: 16),
               child: _buildEditMailboxButton(context, controller.isSelectionEnabled()));
         }
       })
@@ -200,12 +202,12 @@ class MailboxView extends GetWidget<MailboxController> {
 
   Widget _buildEditMailboxButton(BuildContext context, bool isSelectionEnabled) {
     return Material(
-        shape: CircleBorder(),
+        shape: const CircleBorder(),
         color: Colors.transparent,
         child: TextButton(
             child: Text(
               !isSelectionEnabled ? AppLocalizations.of(context).edit : AppLocalizations.of(context).cancel,
-              style: TextStyle(fontSize: 17, color: AppColor.colorTextButton, fontWeight: FontWeight.normal)),
+              style: const TextStyle(fontSize: 17, color: AppColor.colorTextButton, fontWeight: FontWeight.normal)),
             onPressed: () => !isSelectionEnabled
                 ? controller.enableSelectionMailbox()
                 : controller.disableSelectionMailbox()
@@ -214,18 +216,16 @@ class MailboxView extends GetWidget<MailboxController> {
   }
 
   Widget _buildUserInformation(BuildContext context) {
-    return Container(
+    return Column(children: [
-      child: Column(children: [
+      Padding(
-        Padding(
+        padding: EdgeInsets.only(
-          padding: EdgeInsets.only(
+          left: _responsiveUtils.isMobile(context) && _responsiveUtils.isLandscape(context) ? 0 : 16,
-            left: _responsiveUtils.isMobile(context) && _responsiveUtils.isLandscape(context) ? 0 : 16,
+          right: 16),
-            right: 16),
+        child: (UserInformationWidgetBuilder(_imagePaths, context, controller.mailboxDashBoardController.userProfile.value)
-          child: (UserInformationWidgetBuilder(_imagePaths, context, controller.mailboxDashBoardController.userProfile.value)
+              ..addOnLogoutAction(() => controller.mailboxDashBoardController.logoutAction()))
-                ..addOnLogoutAction(() => controller.mailboxDashBoardController.logoutAction()))
+            .build()),
-              .build()),
+      const Divider(color: AppColor.colorDividerMailbox, height: 0.5, thickness: 0.2)
-        Divider(color: AppColor.colorDividerMailbox, height: 0.5, thickness: 0.2)
+    ]);
-      ]),
-    );
   }
 
   Widget _buildSearchBarWidget(BuildContext context) {
@@ -243,21 +243,21 @@ class MailboxView extends GetWidget<MailboxController> {
 
   Widget _buildLoadingView() {
     return Obx(() => controller.viewState.value.fold(
-      (failure) => SizedBox.shrink(),
+      (failure) => const SizedBox.shrink(),
       (success) => success is LoadingState
-        ? Center(child: Padding(
+        ? const Center(child: Padding(
             padding: EdgeInsets.only(top: 16),
             child: SizedBox(
               width: 24,
               height: 24,
               child: CupertinoActivityIndicator(color: AppColor.colorTextButton))))
-        : SizedBox.shrink()));
+        : const SizedBox.shrink()));
   }
 
   Widget _buildListMailbox(BuildContext context) {
     return ListView(
       controller: controller.mailboxListScrollController,
-      key: PageStorageKey('mailbox_list'),
+      key: const PageStorageKey('mailbox_list'),
       primary: false,
       shrinkWrap: true,
       padding: EdgeInsets.only(bottom: controller.isSelectionEnabled() ? 16 : 0),
@@ -267,7 +267,7 @@ class MailboxView extends GetWidget<MailboxController> {
               && _responsiveUtils.isMobile(context)
               && _responsiveUtils.isLandscape(context))
               || _responsiveUtils.isDesktop(context)) {
-            return SizedBox.shrink();
+            return const SizedBox.shrink();
           }
           return _buildUserInformation(context);
         }),
@@ -275,11 +275,11 @@ class MailboxView extends GetWidget<MailboxController> {
         _buildLoadingView(),
         Obx(() => controller.defaultMailboxTree.value.root.childrenItems?.isNotEmpty ?? false
           ? _buildMailboxCategory(context, MailboxCategories.exchange, controller.defaultMailboxTree.value.root)
-          : SizedBox.shrink()),
+          : const SizedBox.shrink()),
-        SizedBox(height: 12),
+        const SizedBox(height: 12),
         Obx(() => controller.folderMailboxTree.value.root.childrenItems?.isNotEmpty ?? false
           ? _buildMailboxCategory(context, MailboxCategories.folders, controller.folderMailboxTree.value.root)
-          : SizedBox.shrink()),
+          : const SizedBox.shrink()),
       ]
     );
   }
@@ -293,7 +293,7 @@ class MailboxView extends GetWidget<MailboxController> {
           Expanded(child: Text(categories.getTitle(context),
               maxLines: 1,
               overflow: TextOverflow.ellipsis,
-              style: TextStyle(fontSize: 20, color: Colors.black, fontWeight: FontWeight.bold))),
+              style: const TextStyle(fontSize: 20, color: Colors.black, fontWeight: FontWeight.bold))),
           buildIconWeb(
               icon: SvgPicture.asset(
                   categories.getExpandMode(controller.mailboxCategoriesExpandMode.value) == ExpandMode.EXPAND
@@ -313,7 +313,7 @@ class MailboxView extends GetWidget<MailboxController> {
         margin: EdgeInsets.only(
             left: _responsiveUtils.isMobile(context) && _responsiveUtils.isLandscape(context) ? 0 : 16,
             right: 16),
-        padding: EdgeInsets.only(left: 12, right: 8),
+        padding: const EdgeInsets.only(left: 12, right: 8),
         child: TreeView(
             key: Key('${categories.keyValue}_mailbox_list'),
             children: _buildListChildTileWidget(context, mailboxNode, lastNode: lastNode)));
@@ -323,10 +323,10 @@ class MailboxView extends GetWidget<MailboxController> {
     return Column(children: [
       _buildHeaderMailboxCategory(context, categories),
       AnimatedContainer(
-        duration: Duration(milliseconds: 400),
+        duration: const Duration(milliseconds: 400),
         child: categories.getExpandMode(controller.mailboxCategoriesExpandMode.value) == ExpandMode.EXPAND
             ? _buildBodyMailboxCategory(context, categories, mailboxNode)
-            : Offstage())
+            : const Offstage())
     ]);
   }
 
@@ -335,7 +335,7 @@ class MailboxView extends GetWidget<MailboxController> {
       ?.map((mailboxNode) => mailboxNode.hasChildren()
           ? TreeViewChild(
                   context,
-                  key: Key('children_tree_mailbox_child'),
+                  key: const Key('children_tree_mailbox_child'),
                   isExpanded: mailboxNode.expandMode == ExpandMode.EXPAND,
                   parent: Obx(() => (MailBoxFolderTileBuilder(context, _imagePaths, mailboxNode, lastNode: lastNode,
                           allSelectMode: controller.currentSelectMode.value)
@@ -355,7 +355,7 @@ class MailboxView extends GetWidget<MailboxController> {
 
   Widget _buildInputSearchFormWidget(BuildContext context) {
     return Padding(
-      padding: EdgeInsets.only(top: 16, bottom: 16),
+      padding: const EdgeInsets.only(top: 16, bottom: 16),
       child: Row(
           children: [
             _buildBackSearchButton(context),
@@ -369,7 +369,7 @@ class MailboxView extends GetWidget<MailboxController> {
                   hasBackButton: false,
                   hasSearchButton: true)
               ..addPadding(EdgeInsets.zero)
-              ..setMargin(EdgeInsets.only(right: 16))
+              ..setMargin(const EdgeInsets.only(right: 16))
               ..addDecoration(BoxDecoration(borderRadius: BorderRadius.circular(12), color: AppColor.colorBgSearchBar))
               ..addIconClearText(SvgPicture.asset(_imagePaths.icClearTextSearch, width: 18, height: 18, fit: BoxFit.fill))
               ..setHintText(AppLocalizations.of(context).hint_search_mailboxes)
@@ -384,9 +384,9 @@ class MailboxView extends GetWidget<MailboxController> {
 
   Widget _buildBackSearchButton(BuildContext context) {
     return Padding(
-        padding: EdgeInsets.only(left: 5),
+        padding: const EdgeInsets.only(left: 5),
         child: Material(
-            shape: CircleBorder(),
+            shape: const CircleBorder(),
             color: Colors.transparent,
             child: IconButton(
                 splashRadius: 20,
@@ -400,14 +400,14 @@ class MailboxView extends GetWidget<MailboxController> {
   Widget _buildListMailboxSearched(BuildContext context) {
     return Obx(() => Container(
         margin: _responsiveUtils.isDesktop(context)
-            ? EdgeInsets.only(left: 16, right: 16)
+            ? const EdgeInsets.only(left: 16, right: 16)
             : EdgeInsets.zero,
         decoration: _responsiveUtils.isDesktop(context)
             ? BoxDecoration(borderRadius: BorderRadius.circular(14), color: Colors.white)
             : null,
         child: ListView.builder(
-            padding: EdgeInsets.only(left: 16, right: 8),
+            padding: const EdgeInsets.only(left: 16, right: 8),
-            key: Key('list_mailbox_searched'),
+            key: const Key('list_mailbox_searched'),
             itemCount: controller.listMailboxSearched.length,
             shrinkWrap: true,
             primary: false,
@@ -429,20 +429,20 @@ class MailboxView extends GetWidget<MailboxController> {
       return Container(
         decoration: BoxDecoration(
             borderRadius: BorderRadius.circular(16),
-            boxShadow: [BoxShadow(color: AppColor.colorEmailAddressTag, spreadRadius: 1, blurRadius: 1, offset: Offset(0, 0.5))],
+            boxShadow: const [BoxShadow(color: AppColor.colorEmailAddressTag, spreadRadius: 1, blurRadius: 1, offset: Offset(0, 0.5))],
             color: Colors.white),
-        margin: EdgeInsets.only(left: 10, bottom: 10, right: 10),
+        margin: const EdgeInsets.only(left: 10, bottom: 10, right: 10),
-        padding: EdgeInsets.all(8),
+        padding: const EdgeInsets.all(8),
         child: (BottomBarSelectionMailboxWidget(context, _imagePaths, controller.listMailboxSelected)
             ..addOnMailboxActionsClick((actions, listMailboxSelected) => controller.pressMailboxSelectionAction(context, actions, listMailboxSelected)))
           .build(),
       );
     } else {
       return Column(children: [
-        Divider(color: AppColor.lineItemListColor, height: 1, thickness: 0.2),
+        const Divider(color: AppColor.lineItemListColor, height: 1, thickness: 0.2),
         SafeArea(
           child: Padding(
-            padding: EdgeInsets.symmetric(vertical: 8),
+            padding: const EdgeInsets.symmetric(vertical: 8),
             child: (BottomBarSelectionMailboxWidget(context, _imagePaths, controller.listMailboxSelected)
                 ..addOnMailboxActionsClick((actions, listMailboxSelected) => controller.pressMailboxSelectionAction(context, actions, listMailboxSelected)))
               .build()))
@@ -452,11 +452,11 @@ class MailboxView extends GetWidget<MailboxController> {
 
   Widget _buildVersionInformation(BuildContext context, PackageInfo packageInfo) {
     return SafeArea(child: Container(
-      padding: EdgeInsets.symmetric(vertical: 16, horizontal: 16),
+      padding: const EdgeInsets.symmetric(vertical: 16, horizontal: 16),
       child: Text(
         '${AppLocalizations.of(context).version} ${packageInfo.version}',
         textAlign: TextAlign.center,
-        style: TextStyle(fontSize: 16, color: AppColor.colorContentEmail, fontWeight: FontWeight.w500),
+        style: const TextStyle(fontSize: 16, color: AppColor.colorContentEmail, fontWeight: FontWeight.w500),
       ),
     ));
   }

lib/features/mailbox/presentation/mailbox_view_web.dart

@@ -20,6 +20,8 @@ class MailboxView extends GetWidget<MailboxController> {
   final _imagePaths = Get.find<ImagePaths>();
   final _responsiveUtils = Get.find<ResponsiveUtils>();
 
+  MailboxView({Key? key}) : super(key: key);
+
   @override
   Widget build(BuildContext context) {
     return Drawer(
@@ -28,13 +30,13 @@ class MailboxView extends GetWidget<MailboxController> {
           body: Column(
               children: [
                 _buildLogoApp(context),
-                if (!_responsiveUtils.isDesktop(context)) Divider(color: AppColor.colorDividerMailbox, height: 0.5, thickness: 0.2),
+                if (!_responsiveUtils.isDesktop(context)) const Divider(color: AppColor.colorDividerMailbox, height: 0.5, thickness: 0.2),
                 Expanded(child: Container(
                   padding: EdgeInsets.zero,
                   color: _responsiveUtils.isDesktop(context) ? AppColor.colorBgDesktop : Colors.white,
                   child: Column(children: [
                     if (_responsiveUtils.isDesktop(context)) _buildComposerButton(context),
-                    Obx(() => controller.isSearchActive() ? _buildInputSearchFormWidget(context) : SizedBox.shrink()),
+                    Obx(() => controller.isSearchActive() ? _buildInputSearchFormWidget(context) : const SizedBox.shrink()),
                     Expanded(child: Obx(() => Container(
                       color: _responsiveUtils.isDesktop(context) ? AppColor.colorBgDesktop : Colors.white,
                       padding: EdgeInsets.zero,
@@ -52,11 +54,11 @@ class MailboxView extends GetWidget<MailboxController> {
                   if (controller.isSearchActive()) {
                     return controller.listPresentationMailboxSelected.isNotEmpty
                         ? _buildOptionSelectionMailbox(context)
-                        : SizedBox.shrink();
+                        : const SizedBox.shrink();
                   } else {
                     return controller.listMailboxNodeSelected.isNotEmpty
                         ? _buildOptionSelectionMailbox(context)
-                        : SizedBox.shrink();
+                        : const SizedBox.shrink();
                   }
                 }),
               ]
@@ -76,7 +78,7 @@ class MailboxView extends GetWidget<MailboxController> {
               (SloganBuilder(arrangedByHorizontal: true)
             ..setSloganText(AppLocalizations.of(context).app_name)
             ..setSloganTextAlign(TextAlign.center)
-            ..setSloganTextStyle(TextStyle(color: Colors.black, fontSize: 20, fontWeight: FontWeight.bold))
+            ..setSloganTextStyle(const TextStyle(color: Colors.black, fontSize: 20, fontWeight: FontWeight.bold))
             ..setSizeLogo(24)
             ..setLogo(_imagePaths.icLogoTMail))
           .build(),
@@ -84,7 +86,7 @@ class MailboxView extends GetWidget<MailboxController> {
             if (controller.mailboxDashBoardController.appInformation.value != null) {
               return _buildVersionInformation(context, controller.mailboxDashBoardController.appInformation.value!);
             } else {
-              return SizedBox.shrink();
+              return const SizedBox.shrink();
             }
           }),
         ])
@@ -93,19 +95,19 @@ class MailboxView extends GetWidget<MailboxController> {
 
   Widget _buildComposerButton(BuildContext context) {
     return Container(
-        padding: EdgeInsets.only(top: 16, right: 16, left: 20),
+        padding: const EdgeInsets.only(top: 16, right: 16, left: 20),
         color: AppColor.colorBgDesktop,
         alignment: Alignment.centerLeft,
         child: (ButtonBuilder(_imagePaths.icCompose)
-            ..key(Key('button_compose_email'))
+            ..key(const Key('button_compose_email'))
             ..decoration(BoxDecoration(borderRadius: BorderRadius.circular(25), color: AppColor.colorTextButton))
-            ..paddingIcon(EdgeInsets.only(right: 8))
+            ..paddingIcon(const EdgeInsets.only(right: 8))
             ..iconColor(Colors.white)
             ..maxWidth(140)
             ..size(20)
             ..radiusSplash(10)
-            ..padding(EdgeInsets.symmetric(vertical: 13))
+            ..padding(const EdgeInsets.symmetric(vertical: 13))
-            ..textStyle(TextStyle(fontSize: 15, color: Colors.white, fontWeight: FontWeight.w500))
+            ..textStyle(const TextStyle(fontSize: 15, color: Colors.white, fontWeight: FontWeight.w500))
             ..onPressActionClick(() => controller.mailboxDashBoardController.composeEmailAction())
             ..text(AppLocalizations.of(context).compose, isVertical: false))
           .build());
@@ -122,21 +124,21 @@ class MailboxView extends GetWidget<MailboxController> {
 
   Widget _buildLoadingView() {
     return Obx(() => controller.viewState.value.fold(
-        (failure) => SizedBox.shrink(),
+        (failure) => const SizedBox.shrink(),
         (success) => success is LoadingState
-            ? Center(child: Padding(
+            ? const Center(child: Padding(
                   padding: EdgeInsets.only(top: 16),
                   child: SizedBox(
                       width: 24,
                       height: 24,
                       child: CupertinoActivityIndicator(color: AppColor.colorTextButton))))
-            : SizedBox.shrink()));
+            : const SizedBox.shrink()));
   }
 
   Widget _buildListMailbox(BuildContext context) {
     return ListView(
         controller: controller.mailboxListScrollController,
-        key: PageStorageKey('mailbox_list'),
+        key: const PageStorageKey('mailbox_list'),
         primary: false,
         shrinkWrap: true,
         padding: EdgeInsets.only(
@@ -148,30 +150,30 @@ class MailboxView extends GetWidget<MailboxController> {
                 && _responsiveUtils.isMobile(context)
                 && _responsiveUtils.isLandscape(context))
                 || _responsiveUtils.isDesktop(context)) {
-              return SizedBox.shrink();
+              return const SizedBox.shrink();
             }
             return _buildUserInformation(context);
           }),
           _buildLoadingView(),
           Obx(() => controller.defaultMailboxTree.value.root.childrenItems?.isNotEmpty ?? false
               ? _buildMailboxCategory(context, MailboxCategories.exchange, controller.defaultMailboxTree.value.root)
-              : SizedBox.shrink()),
+              : const SizedBox.shrink()),
-          SizedBox(height: 8),
+          const SizedBox(height: 8),
           Obx(() => controller.folderMailboxTree.value.root.childrenItems?.isNotEmpty ?? false
-              ? Column(children: [
+              ? Column(children: const [
                   Divider(color: AppColor.colorDividerMailbox, height: 0.5, thickness: 0.2),
                   SizedBox(height: 8),
                 ])
-              : SizedBox.shrink()),
+              : const SizedBox.shrink()),
           Obx(() => controller.folderMailboxTree.value.root.childrenItems?.isNotEmpty ?? false
               ? _buildMailboxCategory(context, MailboxCategories.folders, controller.folderMailboxTree.value.root)
-              : SizedBox.shrink()),
+              : const SizedBox.shrink()),
-          SizedBox(height: 8),
+          const SizedBox(height: 8),
-          Divider(color: AppColor.colorDividerMailbox, height: 0.5, thickness: 0.2),
+          const Divider(color: AppColor.colorDividerMailbox, height: 0.5, thickness: 0.2),
           Row(children: [
             Expanded(child: _buildSearchBarWidget(context)),
             Padding(
-                padding: EdgeInsets.only(right: 8),
+                padding: const EdgeInsets.only(right: 8),
                 child: buildIconWeb(
                     icon: SvgPicture.asset(_imagePaths.icAddNewFolder, color: AppColor.colorTextButton, fit: BoxFit.fill),
                     tooltip: AppLocalizations.of(context).new_mailbox,
@@ -183,14 +185,14 @@ class MailboxView extends GetWidget<MailboxController> {
 
   Widget _buildUserInformation(BuildContext context) {
     return Container(
-      padding: EdgeInsets.symmetric(vertical: 10),
+      padding: const EdgeInsets.symmetric(vertical: 10),
       child: Column(children: [
         Padding(
-          padding: EdgeInsets.only(left: 16, bottom: 10),
+          padding: const EdgeInsets.only(left: 16, bottom: 10),
           child: (UserInformationWidgetBuilder(_imagePaths, context, controller.mailboxDashBoardController.userProfile.value)
               ..addOnLogoutAction(() => controller.mailboxDashBoardController.logoutAction()))
             .build()),
-        Divider(color: AppColor.colorDividerMailbox, height: 0.5, thickness: 0.2)
+        const Divider(color: AppColor.colorDividerMailbox, height: 0.5, thickness: 0.2)
       ]),
     );
   }
@@ -202,7 +204,7 @@ class MailboxView extends GetWidget<MailboxController> {
           Expanded(child: Text(categories.getTitle(context),
               maxLines: 1,
               overflow: TextOverflow.ellipsis,
-              style: TextStyle(fontSize: 17, color: Colors.black, fontWeight: FontWeight.bold))),
+              style: const TextStyle(fontSize: 17, color: Colors.black, fontWeight: FontWeight.bold))),
           buildIconWeb(
               splashRadius: 12,
               icon: SvgPicture.asset(
@@ -230,10 +232,10 @@ class MailboxView extends GetWidget<MailboxController> {
     return Column(children: [
       _buildHeaderMailboxCategory(context, categories),
       AnimatedContainer(
-          duration: Duration(milliseconds: 400),
+          duration: const Duration(milliseconds: 400),
           child: categories.getExpandMode(controller.mailboxCategoriesExpandMode.value) == ExpandMode.EXPAND
               ? _buildBodyMailboxCategory(context, categories, mailboxNode)
-              : Offstage())
+              : const Offstage())
     ]);
   }
 
@@ -242,7 +244,7 @@ class MailboxView extends GetWidget<MailboxController> {
         ?.map((mailboxNode) => mailboxNode.hasChildren()
           ? TreeViewChild(
                 context,
-                key: Key('children_tree_mailbox_child'),
+                key: const Key('children_tree_mailbox_child'),
                 isExpanded: mailboxNode.expandMode == ExpandMode.EXPAND,
                 parent: Obx(() => (MailBoxFolderTileBuilder(context, _imagePaths, mailboxNode, lastNode: lastNode,
                         mailboxNodeSelected: controller.mailboxDashBoardController.selectedMailbox.value)
@@ -262,7 +264,7 @@ class MailboxView extends GetWidget<MailboxController> {
 
   Widget _buildInputSearchFormWidget(BuildContext context) {
     return Padding(
-        padding: EdgeInsets.only(left: 8, top: 16),
+        padding: const EdgeInsets.only(left: 8, top: 16),
         child: Row(
             children: [
               buildIconWeb(
@@ -271,7 +273,7 @@ class MailboxView extends GetWidget<MailboxController> {
               Expanded(child: (SearchAppBarWidget(context, _imagePaths, _responsiveUtils, controller.searchQuery.value,
                       controller.searchFocus, controller.searchInputController, hasBackButton: false, hasSearchButton: true)
                   ..addPadding(EdgeInsets.zero)
-                  ..setMargin(EdgeInsets.only(right: 16))
+                  ..setMargin(const EdgeInsets.only(right: 16))
                   ..addDecoration(BoxDecoration(borderRadius: BorderRadius.circular(12), color: AppColor.colorBgSearchBar))
                   ..addIconClearText(SvgPicture.asset(_imagePaths.icClearTextSearch, width: 16, height: 16, fit: BoxFit.fill))
                   ..setHintText(AppLocalizations.of(context).hint_search_mailboxes)
@@ -289,8 +291,8 @@ class MailboxView extends GetWidget<MailboxController> {
         margin: EdgeInsets.zero,
         color: _responsiveUtils.isDesktop(context) ? AppColor.colorBgDesktop : Colors.white,
         child: ListView.builder(
-            padding: EdgeInsets.only(left: 16, right: 8),
+            padding: const EdgeInsets.only(left: 16, right: 8),
-            key: Key('list_mailbox_searched'),
+            key: const Key('list_mailbox_searched'),
             itemCount: listMailbox.length,
             shrinkWrap: true,
             primary: false,
@@ -307,9 +309,9 @@ class MailboxView extends GetWidget<MailboxController> {
 
   Widget _buildOptionSelectionMailbox(BuildContext context) {
     return Column(children: [
-      Divider(color: AppColor.lineItemListColor, height: 1, thickness: 0.2),
+      const Divider(color: AppColor.lineItemListColor, height: 1, thickness: 0.2),
       Padding(
-          padding: EdgeInsets.symmetric(vertical: 16),
+          padding: const EdgeInsets.symmetric(vertical: 16),
           child: (BottomBarSelectionMailboxWidget(context, _imagePaths, controller.listMailboxSelected)
               ..addOnMailboxActionsClick((actions, listMailboxSelected) => controller.pressMailboxSelectionAction(context, actions, listMailboxSelected)))
             .build()
@@ -319,11 +321,11 @@ class MailboxView extends GetWidget<MailboxController> {
 
   Widget _buildVersionInformation(BuildContext context, PackageInfo packageInfo) {
     return Container(
-      padding: EdgeInsets.only(top: 4),
+      padding: const EdgeInsets.only(top: 4),
       child: Text(
         'v.${packageInfo.version}',
         textAlign: TextAlign.center,
-        style: TextStyle(fontSize: 13, color: AppColor.colorContentEmail, fontWeight: FontWeight.w500),
+        style: const TextStyle(fontSize: 13, color: AppColor.colorContentEmail, fontWeight: FontWeight.w500),
       ),
     );
   }

lib/features/mailbox/presentation/model/mailbox_node.dart

@@ -6,7 +6,7 @@ import 'package:model/mailbox/presentation_mailbox.dart';
 import 'package:model/mailbox/select_mode.dart';
 
 class MailboxNode with EquatableMixin{
-  static PresentationMailbox _root = PresentationMailbox(MailboxId(Id('root')));
+  static final PresentationMailbox _root = PresentationMailbox(MailboxId(Id('root')));
 
   PresentationMailbox item;
   List<MailboxNode>? childrenItems;
@@ -29,14 +29,12 @@ class MailboxNode with EquatableMixin{
   );
 
   void addChildNode(MailboxNode node) {
-    if (childrenItems == null) {
+    childrenItems ??= [];
-      childrenItems = [];
-    }
     childrenItems?.add(node);
   }
 
   List<MailboxNode>? updateNode(MailboxId mailboxId, MailboxNode newNode, {MailboxNode? parent}) {
-    List<MailboxNode>? _children = parent == null ? this.childrenItems : parent.childrenItems;
+    List<MailboxNode>? _children = parent == null ? childrenItems : parent.childrenItems;
     return _children?.map((MailboxNode child) {
       if (child.item.id == mailboxId) {
         return newNode;
@@ -66,15 +64,15 @@ class MailboxNode with EquatableMixin{
       listOfNodes.add(node);
       List<MailboxNode>? childrenItems = node.childrenItems;
       if (childrenItems != null) {
-        childrenItems.forEach((child) {
+        for (var child in childrenItems) {
           _appendDescendants(child, listOfNodes);
-        });
+        }
       }
     }
   }
 
   List<MailboxNode>? toggleSelectNode(MailboxNode selectedMailboxMode, {MailboxNode? parent}) {
-    List<MailboxNode>? _children = parent == null ? this.childrenItems : parent.childrenItems;
+    List<MailboxNode>? _children = parent == null ? childrenItems : parent.childrenItems;
     return _children?.map((MailboxNode child) {
       if (child.item.id == selectedMailboxMode.item.id) {
         return child.toggleSelectMailboxNode();
@@ -88,7 +86,7 @@ class MailboxNode with EquatableMixin{
   }
 
   List<MailboxNode>? toSelectedNode({required SelectMode selectMode, ExpandMode? newExpandMode, MailboxNode? parent}) {
-    List<MailboxNode>? _children = parent == null ? this.childrenItems : parent.childrenItems;
+    List<MailboxNode>? _children = parent == null ? childrenItems : parent.childrenItems;
     return _children?.map((MailboxNode child) {
       if (child.hasChildren()) {
         return child.copyWith(

lib/features/mailbox/presentation/model/mailbox_tree.dart

@@ -15,7 +15,7 @@ class MailboxTree with EquatableMixin {
   MailboxTree(this.root);
 
   MailboxNode? findNode(NodeQuery nodeQuery) {
-    var result;
+    MailboxNode? result;
     final queue = ListQueue<MailboxNode>();
     queue.addLast(root);
     while (queue.isNotEmpty) {

lib/features/mailbox/presentation/model/mailbox_tree_builder.dart

@@ -13,10 +13,10 @@ class TreeBuilder {
     final Map<MailboxId, MailboxNode> mailboxDictionary = HashMap();
 
     final tree = MailboxTree(MailboxNode.root());
-    mailboxesList.forEach((mailbox) {
+    for (var mailbox in mailboxesList) {
       mailboxDictionary[mailbox.id] = MailboxNode(mailbox);
-    });
+    }
-    mailboxesList.forEach((mailbox) {
+    for (var mailbox in mailboxesList) {
       final parentId = mailbox.parentId;
       final parentNode = mailboxDictionary[parentId];
       final node = mailboxDictionary[mailbox.id];
@@ -35,7 +35,7 @@ class TreeBuilder {
           );
         }
       }
-    });
+    }
     return tree;
   }
 
@@ -45,11 +45,11 @@ class TreeBuilder {
     final defaultTree = MailboxTree(MailboxNode.root());
     final folderTree = MailboxTree(MailboxNode.root());
 
-    allMailboxes.forEach((mailbox) {
+    for (var mailbox in allMailboxes) {
       mailboxDictionary[mailbox.id] = MailboxNode(mailbox);
-    });
+    }
 
-    allMailboxes.forEach((mailbox) {
+    for (var mailbox in allMailboxes) {
       final parentId = mailbox.parentId;
       final parentNode = mailboxDictionary[parentId];
       final node = mailboxDictionary[mailbox.id];
@@ -70,7 +70,7 @@ class TreeBuilder {
           );
         }
       }
-    });
+    }
 
     defaultTree.root.childrenItems?.sort((thisMailbox, thatMailbox) => thisMailbox.compareTo(thatMailbox));
     return Tuple2(defaultTree, folderTree);
@@ -86,7 +86,7 @@ class TreeBuilder {
     final newDefaultTree = MailboxTree(MailboxNode.root());
     final newFolderTree = MailboxTree(MailboxNode.root());
 
-    allMailboxes.forEach((mailbox) {
+    for (var mailbox in allMailboxes) {
       final mailboxNodeBeforeChanges = defaultTreeBeforeChanges.findNode((node) => node.item.id == mailbox.id) ??
           folderTreeBeforeChanges.findNode((node) => node.item.id == mailbox.id);
       if (mailboxNodeBeforeChanges != null) {
@@ -97,9 +97,9 @@ class TreeBuilder {
       } else {
         mailboxDictionary[mailbox.id] = MailboxNode(mailbox);
       }
-    });
+    }
 
-    allMailboxes.forEach((mailbox) {
+    for (var mailbox in allMailboxes) {
       final parentId = mailbox.parentId;
       final parentNode = mailboxDictionary[parentId];
       final node = mailboxDictionary[mailbox.id];
@@ -120,7 +120,7 @@ class TreeBuilder {
           );
         }
       }
-    });
+    }
 
     newDefaultTree.root.childrenItems?.sort((thisMailbox, thatMailbox) => thisMailbox.compareTo(thatMailbox));
     return Tuple2(newDefaultTree, newFolderTree);

lib/features/mailbox/presentation/widgets/bottom_bar_selection_mailbox_widget.dart

@@ -26,11 +26,11 @@ class BottomBarSelectionMailboxWidget {
 
   Widget build() {
     return Container(
-      key: Key('bottom_bar_selection_mailbox_widget'),
+      key: const Key('bottom_bar_selection_mailbox_widget'),
       alignment: Alignment.center,
       color: Colors.white,
       child: MediaQuery(
-        data: MediaQueryData(padding: EdgeInsets.zero),
+        data: const MediaQueryData(padding: EdgeInsets.zero),
         child: SafeArea(child: _buildListOptionButton())
       )
     );
@@ -42,16 +42,16 @@ class BottomBarSelectionMailboxWidget {
       crossAxisAlignment: CrossAxisAlignment.center,
       children: [
         Expanded(child: (ButtonBuilder(_imagePaths.icMove)
-            ..key(Key('button_move_all_mailbox'))
+            ..key(const Key('button_move_all_mailbox'))
-            ..paddingIcon(EdgeInsets.all(8))
+            ..paddingIcon(const EdgeInsets.all(8))
             ..textStyle(TextStyle(fontSize: 12, color: AppColor.colorTextButton.withOpacity(0.3)))
             ..iconColor(AppColor.colorTextButton.withOpacity(0.3))
             ..onPressActionClick(() => {})
             ..text(AppLocalizations.of(_context).move, isVertical: true))
           .build()),
         Expanded(child: (ButtonBuilder(_imagePaths.icRenameMailbox)
-            ..key(Key('button_rename_mailbox'))
+            ..key(const Key('button_rename_mailbox'))
-            ..paddingIcon(EdgeInsets.all(8))
+            ..paddingIcon(const EdgeInsets.all(8))
             ..textStyle(TextStyle(
                 fontSize: 12,
                 color: _isRenameMailboxValid ? AppColor.colorTextButton : AppColor.colorTextButton.withOpacity(0.3)))
@@ -64,16 +64,16 @@ class BottomBarSelectionMailboxWidget {
             ..text(AppLocalizations.of(_context).rename, isVertical: true))
           .build()),
         Expanded(child: (ButtonBuilder(_imagePaths.icRead)
-            ..key(Key('button_mark_read_all_mailbox'))
+            ..key(const Key('button_mark_read_all_mailbox'))
-            ..paddingIcon(EdgeInsets.all(8))
+            ..paddingIcon(const EdgeInsets.all(8))
             ..textStyle(TextStyle(fontSize: 12, color: AppColor.colorTextButton.withOpacity(0.3)))
             ..iconColor(AppColor.colorTextButton.withOpacity(0.3))
             ..onPressActionClick(() => {})
             ..text(AppLocalizations.of(_context).mark_as_read, isVertical: true))
           .build()),
         Expanded(child: (ButtonBuilder(_imagePaths.icDelete)
-            ..key(Key('button_delete_all_mailbox'))
+            ..key(const Key('button_delete_all_mailbox'))
-            ..paddingIcon(EdgeInsets.all(8))
+            ..paddingIcon(const EdgeInsets.all(8))
             ..textStyle(TextStyle(
                 fontSize: 12,
                 color: _isDeleteMailboxValid ? AppColor.colorTextButton : AppColor.colorTextButton.withOpacity(0.3)))

lib/features/mailbox/presentation/widgets/mailbox_button_new_folder_builder.dart

@@ -32,13 +32,13 @@ class MailboxNewFolderTileBuilder {
         splashColor: Colors.transparent,
         highlightColor: Colors.transparent),
       child: Container(
-        key: Key('mailbox_new_folder_tile'),
+        key: const Key('mailbox_new_folder_tile'),
         alignment: Alignment.center,
         decoration: BoxDecoration(
           borderRadius: BorderRadius.circular(16),
           color: AppColor.mailboxBackgroundColor),
         child: MediaQuery(
-          data: MediaQueryData(padding: EdgeInsets.zero),
+          data: const MediaQueryData(padding: EdgeInsets.zero),
           child: ListTile(
             contentPadding: EdgeInsets.zero,
             onTap: () => {
@@ -47,16 +47,16 @@ class MailboxNewFolderTileBuilder {
               }
             },
             leading: Padding(
-              padding: EdgeInsets.only(left: 34),
+              padding: const EdgeInsets.only(left: 34),
               child: _icon != null
                 ? SvgPicture.asset(_icon!, width: 24, height: 24, color: AppColor.mailboxIconColor, fit: BoxFit.fill)
-                : SizedBox.shrink()),
+                : const SizedBox.shrink()),
             title: Padding(
-              padding: EdgeInsets.only(left: 8),
+              padding: const EdgeInsets.only(left: 8),
               child: Text(
                 _name ?? '',
                 maxLines: 1,
-                style: TextStyle(fontSize: 15, color: AppColor.mailboxTextColor, fontWeight: FontWeight.bold),
+                style: const TextStyle(fontSize: 15, color: AppColor.mailboxTextColor, fontWeight: FontWeight.bold),
               )),
           )
         )

lib/features/mailbox/presentation/widgets/mailbox_folder_tile_builder.dart

@@ -44,15 +44,15 @@ class MailBoxFolderTileBuilder {
   );
 
   void addOnExpandFolderActionClick(OnExpandFolderActionClick onExpandFolderActionClick) {
-    this._onExpandFolderActionClick = onExpandFolderActionClick;
+    _onExpandFolderActionClick = onExpandFolderActionClick;
   }
 
   void addOnOpenMailboxFolderClick(OnOpenMailboxFolderClick onOpenMailboxFolderClick) {
-    this._onOpenMailboxFolderClick = onOpenMailboxFolderClick;
+    _onOpenMailboxFolderClick = onOpenMailboxFolderClick;
   }
 
   void addOnSelectMailboxFolderClick(OnSelectMailboxFolderClick onSelectMailboxFolderClick) {
-    this._onSelectMailboxFolderClick = onSelectMailboxFolderClick;
+    _onSelectMailboxFolderClick = onSelectMailboxFolderClick;
   }
 
   Widget build() {
@@ -61,14 +61,14 @@ class MailBoxFolderTileBuilder {
         splashColor: Colors.transparent,
         highlightColor: Colors.transparent),
       child: Container(
-        key: Key('mailbox_folder_tile'),
+        key: const Key('mailbox_folder_tile'),
         decoration: BoxDecoration(
           borderRadius: BorderRadius.circular(kIsWeb ? 10 : 0),
           color: backgroundColorItem
         ),
-        padding: kIsWeb ? EdgeInsets.only(left: 8, right: 4) : EdgeInsets.zero,
+        padding: kIsWeb ? const EdgeInsets.only(left: 8, right: 4) : EdgeInsets.zero,
         child: MediaQuery(
-          data: MediaQueryData(padding: EdgeInsets.zero),
+          data: const MediaQueryData(padding: EdgeInsets.zero),
           child: Column(children: [
             ListTile(
               hoverColor: Colors.transparent,
@@ -92,13 +92,13 @@ class MailBoxFolderTileBuilder {
                   : _mailboxNode.item.getCountUnReadEmails().isNotEmpty
                         && mailboxDisplayed == MailboxDisplayed.mailbox
                         && !_mailboxNode.hasChildren()
-                    ? SizedBox(width: 40)
+                    ? const SizedBox(width: 40)
-                    : SizedBox.shrink()
+                    : const SizedBox.shrink()
             ),
             if (lastNode?.item.id != _mailboxNode.item.id && !kIsWeb)
               Padding(
                   padding: EdgeInsets.only(left: allSelectMode == SelectMode.ACTIVE ? 50 : 35),
-                  child: Divider(color: AppColor.lineItemListColor, height: 0.5, thickness: 0.2)),
+                  child: const Divider(color: AppColor.lineItemListColor, height: 0.5, thickness: 0.2)),
           ])
         )
       )
@@ -123,10 +123,10 @@ class MailBoxFolderTileBuilder {
         Expanded(child: Transform(
           transform: Matrix4.translationValues(allSelectMode == SelectMode.ACTIVE ? -16.0 : -20.0, 0.0, 0.0),
           child: Text(
-            '${_mailboxNode.item.name?.name ?? ''}',
+            _mailboxNode.item.name?.name ?? '',
             maxLines: 1,
             overflow: TextOverflow.ellipsis,
-            style: TextStyle(fontSize: 15, color: AppColor.colorNameEmail, fontWeight: FontWeight.normal),
+            style: const TextStyle(fontSize: 15, color: AppColor.colorNameEmail, fontWeight: FontWeight.normal),
           ))),
         if (_mailboxNode.item.getCountUnReadEmails().isNotEmpty && mailboxDisplayed == MailboxDisplayed.mailbox)
           Transform(transform: Matrix4.translationValues(25.0, 0.0, 0.0), child: _buildCounter())
@@ -136,10 +136,10 @@ class MailBoxFolderTileBuilder {
 
   Widget _buildCounter() {
     return Text(
-      '${_mailboxNode.item.getCountUnReadEmails()}',
+      _mailboxNode.item.getCountUnReadEmails(),
       maxLines: 1,
       overflow: TextOverflow.ellipsis,
-      style: TextStyle(fontSize: 13, color: Colors.black, fontWeight: FontWeight.normal),
+      style: const TextStyle(fontSize: 13, color: Colors.black, fontWeight: FontWeight.normal),
     );
   }
 
@@ -152,11 +152,11 @@ class MailBoxFolderTileBuilder {
                 onHover: (value) => setState(() => isHoverIcon = value),
                 child: isHoverIcon
                   ? _buildSelectModeIcon()
-                  : SvgPicture.asset('${_mailboxNode.item.getMailboxIcon(_imagePaths)}', width: 28, height: 28, fit: BoxFit.fill)
+                  : SvgPicture.asset(_mailboxNode.item.getMailboxIcon(_imagePaths), width: 28, height: 28, fit: BoxFit.fill)
             );
           });
     } else {
-      return SvgPicture.asset('${_mailboxNode.item.getMailboxIcon(_imagePaths)}', width: 28, height: 28, fit: BoxFit.fill);
+      return SvgPicture.asset(_mailboxNode.item.getMailboxIcon(_imagePaths), width: 28, height: 28, fit: BoxFit.fill);
     }
   }
 

lib/features/mailbox/presentation/widgets/mailbox_search_tile_builder.dart

@@ -43,10 +43,10 @@ class MailboxSearchTileBuilder {
         splashColor: Colors.transparent,
         highlightColor: Colors.transparent),
       child: Container(
-        key: Key('mailbox_list_tile'),
+        key: const Key('mailbox_list_tile'),
         alignment: Alignment.center,
         child: MediaQuery(
-          data: MediaQueryData(padding: EdgeInsets.zero),
+          data: const MediaQueryData(padding: EdgeInsets.zero),
           child: Column(children: [
             ListTile(
                 contentPadding: EdgeInsets.zero,
@@ -62,10 +62,10 @@ class MailboxSearchTileBuilder {
                       Expanded(child: Transform(
                           transform: Matrix4.translationValues(allSelectMode == SelectMode.ACTIVE ? -16.0 : -20.0, 0.0, 0.0),
                           child: Text(
-                            '${_presentationMailbox.name?.name ?? ''}',
+                            _presentationMailbox.name?.name ?? '',
                             maxLines: 1,
                             overflow:TextOverflow.ellipsis,
-                            style: TextStyle(fontSize: 17, color: AppColor.colorNameEmail, fontWeight: FontWeight.normal),
+                            style: const TextStyle(fontSize: 17, color: AppColor.colorNameEmail, fontWeight: FontWeight.normal),
                           ))),
                     ]),
                 subtitle: _presentationMailbox.mailboxPath?.isNotEmpty == true
@@ -75,7 +75,7 @@ class MailboxSearchTileBuilder {
                           _presentationMailbox.mailboxPath ?? '',
                           maxLines: 1,
                           overflow:TextOverflow.ellipsis,
-                          style: TextStyle(fontSize: 13, color: AppColor.colorContentEmail),
+                          style: const TextStyle(fontSize: 13, color: AppColor.colorContentEmail),
                         ),
                       )
                     : null,
@@ -83,7 +83,7 @@ class MailboxSearchTileBuilder {
             if (lastMailbox?.id != _presentationMailbox.id && !kIsWeb)
               Padding(
                 padding: EdgeInsets.only(left: allSelectMode == SelectMode.ACTIVE ? 50 : 35),
-                child: Divider(color: AppColor.lineItemListColor, height: 0.5, thickness: 0.2)),
+                child: const Divider(color: AppColor.lineItemListColor, height: 0.5, thickness: 0.2)),
           ]),
         )
       )
@@ -107,11 +107,11 @@ class MailboxSearchTileBuilder {
                 onHover: (value) => setState(() => isHoverIcon = value),
                 child: isHoverIcon
                     ? _buildSelectModeIcon()
-                    : SvgPicture.asset('${_presentationMailbox.getMailboxIcon(_imagePaths)}', width: 28, height: 28, fit: BoxFit.fill)
+                    : SvgPicture.asset(_presentationMailbox.getMailboxIcon(_imagePaths), width: 28, height: 28, fit: BoxFit.fill)
             );
           });
     } else {
-      return SvgPicture.asset('${_presentationMailbox.getMailboxIcon(_imagePaths)}', width: 28, height: 28, fit: BoxFit.fill);
+      return SvgPicture.asset(_presentationMailbox.getMailboxIcon(_imagePaths), width: 28, height: 28, fit: BoxFit.fill);
     }
   }
 

lib/features/mailbox/presentation/widgets/search_form_widget_builder.dart

@@ -24,7 +24,7 @@ class SearchFormWidgetBuilder {
 
   Widget build() {
     return Container(
-      key: Key('search_folder_form'),
+      key: const Key('search_folder_form'),
       alignment: Alignment.center,
       decoration: BoxDecoration(
         borderRadius: BorderRadius.circular(16),
@@ -38,23 +38,23 @@ class SearchFormWidgetBuilder {
             border: InputBorder.none,
             focusedBorder: InputBorder.none,
             enabledBorder: InputBorder.none,
-            contentPadding: EdgeInsets.only(left: 0, top: 15, bottom: 15, right: 15),
+            contentPadding: const EdgeInsets.only(left: 0, top: 15, bottom: 15, right: 15),
             hintText: AppLocalizations.of(_context).search_folder,
-            hintStyle: TextStyle(color: AppColor.searchHintTextColor, fontSize: 15.0, fontWeight: FontWeight.w500),
+            hintStyle: const TextStyle(color: AppColor.searchHintTextColor, fontSize: 15.0, fontWeight: FontWeight.w500),
             icon: Padding(
-              padding: EdgeInsets.only(left: 20),
+              padding: const EdgeInsets.only(left: 20),
               child: SvgPicture.asset(_imagePaths.icSearch, width: 24, height: 24, fit: BoxFit.fill),
             ))),
-        debounceDuration: Duration(milliseconds: 300),
+        debounceDuration: const Duration(milliseconds: 300),
         suggestionsCallback: (pattern) async {
           if (_onNewSearchQuery != null) {
             _onNewSearchQuery!(pattern);
           }
           return [];
         },
-        itemBuilder: (BuildContext context, itemData) => SizedBox.shrink(),
+        itemBuilder: (BuildContext context, itemData) => const SizedBox.shrink(),
         onSuggestionSelected: (suggestion) {},
-        noItemsFoundBuilder: (context) => SizedBox(),
+        noItemsFoundBuilder: (context) => const SizedBox(),
         hideOnEmpty: true,
         hideOnError: true,
         hideOnLoading: true,

lib/features/mailbox/presentation/widgets/storage_widget_builder.dart

@@ -12,8 +12,8 @@ class StorageWidgetBuilder {
 
   Widget build() {
     return Container(
-      key: Key('storage_widget'),
+      key: const Key('storage_widget'),
-      padding: EdgeInsets.only(left: 40, top: 16, bottom: 20, right: 40),
+      padding: const EdgeInsets.only(left: 40, top: 16, bottom: 20, right: 40),
       color: AppColor.storageBackgroundColor,
       alignment: Alignment.bottomLeft,
       height: 100,
@@ -24,11 +24,11 @@ class StorageWidgetBuilder {
           Text(
             AppLocalizations.of(_context).storage,
             maxLines: 1,
-            style: TextStyle(fontSize: 12, color: AppColor.storageTitleColor, fontWeight: FontWeight.w500)),
+            style: const TextStyle(fontSize: 12, color: AppColor.storageTitleColor, fontWeight: FontWeight.w500)),
           Padding(
-            padding: EdgeInsets.only(top: 8.0),
+            padding: const EdgeInsets.only(top: 8.0),
             child: RichText(
-              text: TextSpan(
+              text: const TextSpan(
                 style: TextStyle(fontSize: 16, color: AppColor.storageMaxSizeColor, fontWeight: FontWeight.w700),
                 children: [
                   TextSpan(

lib/features/mailbox/presentation/widgets/user_information_widget_builder.dart

@@ -28,7 +28,7 @@ class UserInformationWidgetBuilder {
 
   Widget build() {
     return Container(
-      key: Key('user_information_widget'),
+      key: const Key('user_information_widget'),
       color: Colors.transparent,
       padding: EdgeInsets.zero,
       margin: EdgeInsets.zero,
@@ -37,7 +37,7 @@ class UserInformationWidgetBuilder {
             ..text(_userProfile != null ? _userProfile!.getAvatarText() : '')
             ..backgroundColor(Colors.white)
             ..textColor(Colors.black)
-            ..addBoxShadows([BoxShadow(
+            ..addBoxShadows([const BoxShadow(
                 color: AppColor.colorShadowBgContentEmail,
                 spreadRadius: 1, blurRadius: 1, offset: Offset(0, 0.5))])
             ..size(GetPlatform.isWeb ? 48 : 56))
@@ -47,16 +47,16 @@ class UserInformationWidgetBuilder {
           crossAxisAlignment: CrossAxisAlignment.start,
           children: [
             Padding(
-                padding: EdgeInsets.only(left: 16, top: 10),
+                padding: const EdgeInsets.only(left: 16, top: 10),
                 child: Text(
                     _userProfile != null ? '${_userProfile?.email}' : '',
                     maxLines: 1,
                     overflow: GetPlatform.isWeb ? TextOverflow.clip : TextOverflow.ellipsis,
-                    style: TextStyle(fontSize: 17, color: AppColor.colorNameEmail, fontWeight: FontWeight.w600)
+                    style: const TextStyle(fontSize: 17, color: AppColor.colorNameEmail, fontWeight: FontWeight.w600)
                 )
             ),
             Padding(
-              padding: EdgeInsets.only(left: 10),
+              padding: const EdgeInsets.only(left: 10),
               child: Material(
                   borderRadius: BorderRadius.circular(20),
                   color: Colors.transparent,
@@ -66,7 +66,7 @@ class UserInformationWidgetBuilder {
                         onPressed: () => _onLogoutActionClick?.call(),
                         child: Text(
                           AppLocalizations.of(_context).logout,
-                          style: TextStyle(fontSize: 14, color: AppColor.colorTextButton),
+                          style: const TextStyle(fontSize: 14, color: AppColor.colorTextButton),
                         ),
                       )
                   )