From 75636d69ff56e61cf90285f79f63e001f6086abe Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Mon, 16 Feb 2026 12:05:31 +0400
Subject: [PATCH] Return "When window closed" setting section.

Fixes #30284.
---
 .../settings/sections/settings_advanced.cpp   | 67 +++++++++++++++++++
 1 file changed, 67 insertions(+)

diff --git a/Telegram/SourceFiles/settings/sections/settings_advanced.cpp b/Telegram/SourceFiles/settings/sections/settings_advanced.cpp
index a72f977b65..6b6aacc594 100644
--- a/Telegram/SourceFiles/settings/sections/settings_advanced.cpp
+++ b/Telegram/SourceFiles/settings/sections/settings_advanced.cpp
@@ -347,6 +347,70 @@ void BuildWindowTitleSection(SectionBuilder &builder) {
 	builder.addSkip();
 }
 
+#if !defined Q_OS_WIN && !defined Q_OS_MAC
+void BuildWindowCloseBehaviorSection(SectionBuilder &builder) {
+	using Behavior = Core::Settings::CloseBehavior;
+
+	const auto settings = &Core::App().settings();
+	auto shown = Platform::TrayIconSupported()
+		? (Core::App().settings().workModeValue(
+			) | rpl::map([](Core::Settings::WorkMode mode) {
+				return (mode == Core::Settings::WorkMode::WindowOnly);
+			}) | rpl::distinct_until_changed() | rpl::type_erased())
+		: rpl::producer<bool>(nullptr);
+
+	builder.scope([&] {
+		builder.addDivider();
+		builder.addSkip();
+		builder.addSubsectionTitle({
+			.id = u"advanced/window_close"_q,
+			.title = tr::lng_settings_window_close(),
+			.keywords = { u"close"_q, u"window"_q, u"background"_q, u"quit"_q, u"taskbar"_q, u"minimize"_q },
+		});
+
+		builder.add([settings](const WidgetContext &ctx) {
+			const auto container = ctx.container.get();
+			auto wrap = object_ptr<Ui::VerticalLayout>(container);
+			const auto inner = wrap.data();
+
+			const auto group = std::make_shared<Ui::RadioenumGroup<Behavior>>(
+				settings->closeBehavior());
+			const auto addRadio = [&](Behavior value, const QString &label) {
+				inner->add(
+					object_ptr<Ui::Radioenum<Behavior>>(
+						inner,
+						group,
+						value,
+						label,
+						st::settingsSendType),
+					st::settingsSendTypePadding);
+			};
+
+			addRadio(
+				Behavior::RunInBackground,
+				tr::lng_settings_run_in_background(tr::now));
+			addRadio(
+				Behavior::CloseToTaskbar,
+				tr::lng_settings_close_to_taskbar(tr::now));
+			addRadio(
+				Behavior::Quit,
+				tr::lng_settings_quit_on_close(tr::now));
+
+			group->value() | rpl::filter([=](Behavior value) {
+				return (value != settings->closeBehavior());
+			}) | rpl::on_next([=](Behavior value) {
+				settings->setCloseBehavior(value);
+				Local::writeSettings();
+			}, inner->lifetime());
+
+			return SectionBuilder::WidgetToAdd{ .widget = std::move(wrap) };
+		});
+
+		builder.addSkip();
+	}, std::move(shown));
+}
+#endif // !Q_OS_WIN && !Q_OS_MAC
+
 void BuildSystemIntegrationSection(SectionBuilder &builder) {
 	const auto controller = builder.controller();
 	const auto settings = &Core::App().settings();
@@ -1126,6 +1190,9 @@ const auto kMeta = BuildHelper({
 	BuildDataStorageSection(builder);
 	BuildAutoDownloadSection(builder);
 	BuildWindowTitleSection(builder);
+#if !defined Q_OS_WIN && !defined Q_OS_MAC
+	BuildWindowCloseBehaviorSection(builder);
+#endif
 	BuildSystemIntegrationSection(builder);
 	BuildPerformanceSection(builder);
 	BuildSpellcheckerSection(builder);