Added new setting to disable spellchecker.

Telegram/Resources/langs/lang.strings

@@ -410,6 +410,9 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_settings_enable_animations" = "Enable animations";
 "lng_settings_autoplay_gifs" = "Autoplay GIFs";
 
+"lng_settings_spellchecker" = "Spell checker";
+"lng_settings_system_spellchecker" = "Use system spell checker";
+
 "lng_backgrounds_header" = "Choose your new chat background";
 "lng_theme_sure_keep" = "Keep this theme?";
 "lng_theme_reverting#one" = "Reverting to the old theme in {count} second.";

Telegram/SourceFiles/main/main_settings.cpp

@@ -89,6 +89,7 @@ QByteArray Settings::serialize() const {
 		stream << qint32(_variables.replaceEmoji.current() ? 1 : 0);
 		stream << qint32(_variables.suggestEmoji ? 1 : 0);
 		stream << qint32(_variables.suggestStickersByEmoji ? 1 : 0);
+		stream << qint32(_variables.spellcheckerEnabled.current() ? 1 : 0);
 	}
 	return result;
 }
@@ -135,6 +136,7 @@ void Settings::constructFromSerialized(const QByteArray &serialized) {
 	qint32 replaceEmoji = _variables.replaceEmoji.current() ? 1 : 0;
 	qint32 suggestEmoji = _variables.suggestEmoji ? 1 : 0;
 	qint32 suggestStickersByEmoji = _variables.suggestStickersByEmoji ? 1 : 0;
+	qint32 spellcheckerEnabled = _variables.spellcheckerEnabled.current() ? 1 : 0;
 
 	stream >> selectorTab;
 	stream >> lastSeenWarningSeen;
@@ -234,6 +236,9 @@ void Settings::constructFromSerialized(const QByteArray &serialized) {
 		stream >> suggestEmoji;
 		stream >> suggestStickersByEmoji;
 	}
+	if (!stream.atEnd()) {
+		stream >> spellcheckerEnabled;
+	}
 	if (stream.status() != QDataStream::Ok) {
 		LOG(("App Error: "
 			"Bad data for Main::Settings::constructFromSerialized()"));
@@ -313,6 +318,7 @@ void Settings::constructFromSerialized(const QByteArray &serialized) {
 	_variables.replaceEmoji = (replaceEmoji == 1);
 	_variables.suggestEmoji = (suggestEmoji == 1);
 	_variables.suggestStickersByEmoji = (suggestStickersByEmoji == 1);
+	_variables.spellcheckerEnabled = (spellcheckerEnabled == 1);
 }
 
 void Settings::setSupportChatsTimeSlice(int slice) {

Telegram/SourceFiles/main/main_settings.h

@@ -231,6 +231,19 @@ public:
 		_variables.suggestStickersByEmoji = value;
 	}
 
+	void setSpellcheckerEnabled(bool value) {
+		_variables.spellcheckerEnabled = value;
+	}
+	bool spellcheckerEnabled() const {
+		return _variables.spellcheckerEnabled.current();
+	}
+	rpl::producer<bool> spellcheckerEnabledValue() const {
+		return _variables.spellcheckerEnabled.value();
+	}
+	rpl::producer<bool> spellcheckerEnabledChanges() const {
+		return _variables.spellcheckerEnabled.changes();
+	}
+
 private:
 	struct Variables {
 		Variables();
@@ -270,6 +283,7 @@ private:
 		rpl::variable<bool> replaceEmoji = true;
 		bool suggestEmoji = true;
 		bool suggestStickersByEmoji = true;
+		rpl::variable<bool> spellcheckerEnabled = true;
 
 		static constexpr auto kDefaultSupportChatsLimitSlice
 			= 7 * 24 * 60 * 60;

Telegram/SourceFiles/settings/settings_advanced.cpp

@@ -243,6 +243,30 @@ void SetupUpdate(not_null<Ui::VerticalLayout*> container) {
 	});
 }
 
+bool HasSystemSpellchecker() {
+	return (Platform::IsWindows() && Platform::IsWindows8OrGreater())
+		|| Platform::IsMac();
+}
+
+void SetupSpellchecker(
+		not_null<Window::SessionController*> controller,
+		not_null<Ui::VerticalLayout*> container) {
+	const auto session = &controller->session();
+	AddButton(
+		container,
+		tr::lng_settings_system_spellchecker(),
+		st::settingsButton
+	)->toggleOn(
+		rpl::single(session->settings().spellcheckerEnabled())
+	)->toggledValue(
+	) | rpl::filter([=](bool enabled) {
+		return (enabled != session->settings().spellcheckerEnabled());
+	}) | rpl::start_with_next([=](bool enabled) {
+		session->settings().setSpellcheckerEnabled(enabled);
+		session->saveSettingsDelayed();
+	}, container->lifetime());
+}
+
 bool HasTray() {
 	return cSupportTray() || Platform::IsWindows();
 }
@@ -515,6 +539,14 @@ void Advanced::setupContent(not_null<Window::SessionController*> controller) {
 	SetupPerformance(controller, content);
 	AddSkip(content);
 
+	if (HasSystemSpellchecker()) {
+		AddSkip(content);
+		AddDivider(content);
+		AddSubsectionTitle(content, tr::lng_settings_spellchecker());
+		SetupSpellchecker(controller, content);
+		AddSkip(content);
+	}
+
 	if (cAutoUpdate()) {
 		addUpdate();
 	}