Removed unnecessary rebuild of chats filters strip when order is same.

Telegram/SourceFiles/ui/widgets/chat_filters_tabs_slider.cpp

@@ -57,6 +57,26 @@ ChatsFiltersTabs::ChatsFiltersTabs(
 	Ui::DiscreteSlider::setSelectOnPress(false);
 }
 
+bool ChatsFiltersTabs::setSectionsAndCheckChanged(
+		std::vector<QString> &&sections) {
+	const auto &was = sectionsRef();
+	const auto changed = [&] {
+		if (was.size() != sections.size()) {
+			return true;
+		}
+		for (auto i = 0; i < sections.size(); i++) {
+			if (was[i].label.toString() != sections[i]) {
+				return true;
+			}
+		}
+		return false;
+	}();
+	if (changed) {
+		Ui::DiscreteSlider::setSections(std::move(sections));
+	}
+	return changed;
+}
+
 int ChatsFiltersTabs::centerOfSection(int section) const {
 	const auto widths = countSectionsWidths(0);
 	auto result = 0;

Telegram/SourceFiles/ui/widgets/chat_filters_tabs_slider.h

@@ -27,6 +27,8 @@ public:
 		not_null<Ui::RpWidget*> parent,
 		const style::SettingsSlider &st);
 
+	bool setSectionsAndCheckChanged(std::vector<QString> &&sections);
+
 	[[nodiscard]] int centerOfSection(int section) const;
 	void fitWidthToSections();
 	void setUnreadCount(int index, int unreadCount, bool muted);

Telegram/SourceFiles/ui/widgets/chat_filters_tabs_strip.cpp

@@ -293,15 +293,18 @@ not_null<Ui::RpWidget*> AddChatFiltersTabsStrip(
 		if ((list.size() <= 1 && !slider->width()) || state->ignoreRefresh) {
 			return;
 		}
+		const auto sectionsChanged = slider->setSectionsAndCheckChanged(
+			ranges::views::all(
+				list
+			) | ranges::views::transform([](const Data::ChatFilter &filter) {
+				return filter.title().isEmpty()
+					? tr::lng_filters_all_short(tr::now)
+					: filter.title();
+			}) | ranges::to_vector);
+		if (!sectionsChanged) {
+			return;
+		}
 		state->rebuildLifetime.destroy();
-		auto sections = ranges::views::all(
-			list
-		) | ranges::views::transform([](const Data::ChatFilter &filter) {
-			return filter.title().isEmpty()
-				? tr::lng_filters_all_short(tr::now)
-				: filter.title();
-		}) | ranges::to_vector;
-		slider->setSections(std::move(sections));
 		slider->fitWidthToSections();
 		{
 			const auto reorderAll = session->user()->isPremium();