Display languages native names in the box.

Also don't suggest the old official languages in a popup.

Telegram/SourceFiles/boxes/language_box.cpp

@@ -71,7 +71,7 @@ void LanguageBox::Inner::refresh() {
 	_buttons.reserve(_languages->size());
 	auto index = 0;
 	for_const (auto &language, *_languages) {
-		_buttons.emplace_back(this, _group, index++, language.name, st::langsButton);
+		_buttons.emplace_back(this, _group, index++, language.nativeName, st::langsButton);
 		auto button = _buttons.back().data();
 		button->moveToLeft(st::boxPadding.left() + st::boxOptionListPadding.left(), y + st::langsButton.margin.top());
 		button->show();
@@ -141,7 +141,7 @@ void LanguageBox::refreshLanguages() {
 	_languages.reserve(list.size() + 1);
 	auto currentId = Lang::Current().id();
 	auto currentIndex = -1;
-	_languages.push_back({ qsl("en"), qsl("English") });
+	_languages.push_back({ qsl("en"), qsl("English"), qsl("English") });
 	for (auto &language : list) {
 		auto isCurrent = (language.id == currentId) || (language.id == Lang::DefaultLanguageId() && currentId.isEmpty());
 		if (language.id != qstr("en")) {
@@ -154,11 +154,11 @@ void LanguageBox::refreshLanguages() {
 		}
 	}
 	if (currentId == qstr("custom")) {
-		_languages.insert(_languages.begin(), { currentId, qsl("Custom LangPack") });
+		_languages.insert(_languages.begin(), { currentId, qsl("Custom LangPack"), qsl("Custom LangPack") });
 		currentIndex = 0;
 	} else if (currentIndex < 0) {
 		currentIndex = _languages.size();
-		_languages.push_back({ currentId, lang(lng_language_name) });
+		_languages.push_back({ currentId, lang(lng_language_name), lang(lng_language_name) });
 	}
 	_inner->setSelected(currentIndex);
 }

Telegram/SourceFiles/lang/lang_cloud_manager.cpp

@@ -73,8 +73,22 @@ void CloudManager::setSuggestedLanguage(const QString &langCode) {
 		_firstLanguageSuggestion.notify();
 
 		if (AuthSession::Exists() && _langpack.id().isEmpty() && !_suggestedLanguage.isEmpty()) {
-			_offerSwitchToId = _suggestedLanguage;
-			offerSwitchLangPack();
+			auto isLegacy = [](const QString &languageId) {
+				for (auto &legacyString : kLegacyLanguages) {
+					auto legacyId = str_const_toString(legacyString);
+					if (ConvertLegacyLanguageId(legacyId) == languageId) {
+						return true;
+					}
+				}
+				return false;
+			};
+
+			// The old available languages (de/it/nl/ko/es/pt_BR) won't be
+			// suggested anyway, because everyone saw the suggestion in intro.
+			if (!isLegacy(_suggestedLanguage)) {
+				_offerSwitchToId = _suggestedLanguage;
+				offerSwitchLangPack();
+			}
 		}
 	}
 }
@@ -103,7 +117,7 @@ void CloudManager::requestLanguageList() {
 		for_const (auto &langData, result.v) {
 			t_assert(langData.type() == mtpc_langPackLanguage);
 			auto &language = langData.c_langPackLanguage();
-			languages.push_back({ qs(language.vlang_code), qs(language.vname) });
+			languages.push_back({ qs(language.vlang_code), qs(language.vname), qs(language.vnative_name) });
 		}
 		if (_languages != languages) {
 			_languages = languages;

Telegram/SourceFiles/lang/lang_cloud_manager.h

@@ -38,6 +38,7 @@ public:
 	struct Language {
 		QString id;
 		QString name;
+		QString nativeName;
 	};
 	using Languages = QVector<Language>;
 

Telegram/SourceFiles/lang/lang_instance.cpp

@@ -34,20 +34,6 @@ namespace {
 constexpr auto kDefaultLanguage = str_const("en");
 constexpr auto kLangValuesLimit = 20000;
 
-constexpr str_const kLegacyLanguages[] = {
-	"en",
-	"it",
-	"es",
-	"de",
-	"nl",
-	"pt_BR",
-	"ko",
-};
-
-QString ConvertLegacyLanguageId(const QString &languageId) {
-	return languageId.toLower().replace('_', '-');
-}
-
 class ValueParser {
 public:
 	ValueParser(const QByteArray &key, LangKey keyIndex, const QByteArray &value);
@@ -365,16 +351,23 @@ void Instance::fillFromCustomFile(const QString &filePath) {
 void Instance::fillFromLegacy(int legacyId, const QString &legacyPath) {
 	if (legacyId == kLegacyDefaultLanguage) {
 		_legacyId = legacyId;
-		_id = str_const_toString(kLegacyLanguages[legacyId]);
+
+		// We suppose that user didn't switch to the default language,
+		// so we will suggest him to switch to his language if we get it.
+		//
+		// The old available languages (de/it/nl/ko/es/pt_BR) won't be
+		// suggested anyway, because everyone saw the suggestion in intro.
+		_id = QString();// str_const_toString(kLegacyLanguages[legacyId]);
 	} else if (legacyId == kLegacyCustomLanguage) {
 		auto absolutePath = QFileInfo(legacyPath).absoluteFilePath();
 		auto relativePath = QDir().relativeFilePath(absolutePath);
 		auto content = Lang::FileParser::ReadFile(absolutePath, relativePath);
 		if (!content.isEmpty()) {
+			_legacyId = legacyId;
 			loadFromCustomContent(absolutePath, relativePath, content);
 		}
 	} else if (legacyId > kLegacyDefaultLanguage && legacyId < base::array_size(kLegacyLanguages)) {
-		auto languageId = str_const_toString(kLegacyLanguages[_legacyId]);
+		auto languageId = str_const_toString(kLegacyLanguages[legacyId]);
 		auto resourcePath = qsl(":/langs/lang_") + languageId + qsl(".strings");
 		auto content = Lang::FileParser::ReadFile(resourcePath, resourcePath);
 		if (!content.isEmpty()) {

Telegram/SourceFiles/lang/lang_instance.h

@@ -29,6 +29,20 @@ constexpr auto kLegacyLanguageNone = -2;
 constexpr auto kLegacyCustomLanguage = -1;
 constexpr auto kLegacyDefaultLanguage = 0;
 
+constexpr str_const kLegacyLanguages[] = {
+	"en",
+	"it",
+	"es",
+	"de",
+	"nl",
+	"pt_BR",
+	"ko",
+};
+
+inline QString ConvertLegacyLanguageId(const QString &languageId) {
+	return languageId.toLower().replace('_', '-');
+}
+
 QString DefaultLanguageId();
 
 class Instance;