TF-1156: [Presentation] Auto scroll mailbox list while dragging and drop

lib/features/mailbox/presentation/mailbox_controller.dart

@@ -1162,4 +1162,25 @@ class MailboxController extends BaseMailboxController {
     _cancelSelectMailbox();
     mailboxDashBoardController.closeMailboxMenuDrawer();
   }
+
+  void autoScrollTop() {
+    mailboxListScrollController.animateTo(
+      mailboxListScrollController.position.minScrollExtent,
+      duration: const Duration(seconds: 1),
+      curve: Curves.easeInToLinear);
+  }
+
+  void autoScrollBottom() {
+    mailboxListScrollController.animateTo(
+      mailboxListScrollController.position.maxScrollExtent,
+      duration: const Duration(seconds: 1),
+      curve: Curves.easeInToLinear);
+  }
+
+  void stopAutoScroll() {
+    mailboxListScrollController.animateTo(
+      mailboxListScrollController.offset,
+      duration: const Duration(milliseconds: 300),
+      curve: Curves.fastOutSlowIn); 
+  }
 }

lib/features/mailbox/presentation/mailbox_view_web.dart

@@ -150,7 +150,9 @@ class MailboxView extends GetWidget<MailboxController> with AppLoaderMixin, Popu
   }
 
   Widget _buildListMailbox(BuildContext context) {
-    return SingleChildScrollView(
+    return Stack(
+      children: [
+        SingleChildScrollView(
           controller: controller.mailboxListScrollController,
           key: const PageStorageKey('mailbox_list'),
           physics: const ClampingScrollPhysics(),
@@ -194,6 +196,26 @@ class MailboxView extends GetWidget<MailboxController> with AppLoaderMixin, Popu
                 ? _buildMailboxCategory(context, MailboxCategories.folders, controller.folderRootNode)
                 : const SizedBox.shrink()),
           ])
+        ),
+        Obx(() => controller.mailboxDashBoardController.isDraggingMailbox
+            ? Align(
+                alignment: Alignment.topCenter,
+                child: InkWell(
+                  onTap: () {},
+                  onHover: (value) => value ? controller.autoScrollTop() : controller.stopAutoScroll(),
+                  child: Container(
+                    height: 40)))
+            : const SizedBox.shrink()),
+        Obx(() => controller.mailboxDashBoardController.isDraggingMailbox
+            ? Align(
+                alignment: Alignment.bottomCenter,
+                child: InkWell(
+                  onTap: () {},
+                  onHover: (value) => value ? controller.autoScrollBottom() : controller.stopAutoScroll(),
+                  child: Container(
+                    height: 40)))
+            : const SizedBox.shrink()),
+      ],
     );
   }
 

lib/features/mailbox_dashboard/presentation/controller/mailbox_dashboard_controller.dart

@@ -155,6 +155,7 @@ class MailboxDashBoardController extends ReloadableController {
   final viewStateMarkAsReadMailbox = Rx<Either<Failure, Success>>(Right(UIState.idle));
   final vacationResponse = Rxn<VacationResponse>();
   final routerParameters = Rxn<Map<String, String?>>();
+  final _isDraggingMailbox = RxBool(false);
   Session? sessionCurrent;
   Map<Role, MailboxId> mapDefaultMailboxIdByRole = {};
   Map<MailboxId, PresentationMailbox> mapMailboxById = {};
@@ -1541,6 +1542,12 @@ class MailboxDashBoardController extends ReloadableController {
     spamReportController.storeSpamReportStateAction(_storeSpamReportState);
   }
 
+  void onDragMailbox(bool isDragging) {
+    _isDraggingMailbox.value = isDragging;
+  }
+
+  bool get isDraggingMailbox => _isDraggingMailbox.value;
+  
   @override
   void onClose() {
     _emailReceiveManager.closeEmailReceiveManagerStream();

lib/features/thread/presentation/thread_controller.dart

@@ -965,4 +965,8 @@ class ThreadController extends BaseController with EmailActionController {
     }
     _navigationRouter = null;
   }
+
+  void onDragMailBox(bool isDrag) {
+    mailboxDashBoardController.onDragMailbox(isDrag);
+  }
 }

lib/features/thread/presentation/thread_view.dart

@@ -373,7 +373,10 @@ class ThreadView extends GetWidget<ThreadController>
               dragAnchorStrategy: pointerDragAnchorStrategy,
               onDragStarted: () {
                 controller.calculateDragValue(currentPresentationEmail);
+                controller.onDragMailBox(true);
               },
+              onDragEnd: (_) => controller.onDragMailBox(false),
+              onDraggableCanceled: (_,__) => controller.onDragMailBox(false),
             ));
           }),
       )