Moved out lambda to jump to near chats filters to static function.

Telegram/SourceFiles/dialogs/dialogs_inner_widget.cpp

@@ -4893,33 +4893,14 @@ void InnerWidget::setupShortcuts() {
 			});
 		}
 
-		const auto nearFolder = [=](bool isNext) {
-			const auto id = _controller->activeChatsFilterCurrent();
-			const auto list = &session().data().chatsFilters().list();
-			const auto index = int(ranges::find(
-				*list,
-				id,
-				&Data::ChatFilter::id
-			) - begin(*list));
-			if (index == list->size() && id != 0) {
-				return false;
-			}
-			const auto changed = index + (isNext ? 1 : -1);
-			if (changed >= int(list->size()) || changed < 0) {
-				return false;
-			}
-			_controller->setActiveChatsFilter((changed >= 0)
-				? (*list)[changed].id()
-				: 0);
-			return true;
-		};
-
 		request->check(Command::FolderNext) && request->handle([=] {
-			return nearFolder(true);
+			using namespace Window;
+			return CheckAndJumpToNearChatsFilter(_controller, true, true);
 		});
 
 		request->check(Command::FolderPrevious) && request->handle([=] {
-			return nearFolder(false);
+			using namespace Window;
+			return CheckAndJumpToNearChatsFilter(_controller, false, true);
 		});
 
 		request->check(Command::ReadChat) && request->handle([=] {

Telegram/SourceFiles/window/window_session_controller.cpp

@@ -3244,4 +3244,30 @@ SessionController::~SessionController() {
 	resetFakeUnreadWhileOpened();
 }
 
+bool CheckAndJumpToNearChatsFilter(
+		not_null<SessionController*> controller,
+		bool isNext,
+		bool jump) {
+	const auto id = controller->activeChatsFilterCurrent();
+	const auto list = &controller->session().data().chatsFilters().list();
+	const auto index = int(ranges::find(
+		*list,
+		id,
+		&Data::ChatFilter::id
+	) - begin(*list));
+	if (index == list->size() && id != 0) {
+		return false;
+	}
+	const auto changed = index + (isNext ? 1 : -1);
+	if (changed >= int(list->size()) || changed < 0) {
+		return false;
+	}
+	if (jump) {
+		controller->setActiveChatsFilter((changed >= 0)
+			? (*list)[changed].id()
+			: 0);
+	}
+	return true;
+}
+
 } // namespace Window

Telegram/SourceFiles/window/window_session_controller.h

@@ -757,4 +757,9 @@ void ActivateWindow(not_null<SessionController*> controller);
 	not_null<SessionController*> controller,
 	GifPauseReason level);
 
+bool CheckAndJumpToNearChatsFilter(
+	not_null<SessionController*> controller,
+	bool isNext,
+	bool jump);
+
 } // namespace Window