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Telegram/SourceFiles/history/history_translation.cpp

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+/*
+This file is part of Telegram Desktop,
+the official desktop application for the Telegram messaging service.
+
+For license and copyright information please follow this link:
+https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
+*/
+#include "history/history_translation.h"
+
+#include "data/data_changes.h"
+#include "history/history.h"
+#include "main/main_session.h"
+
+namespace {
+
+using UpdateFlag = Data::HistoryUpdate::Flag;
+
+} // namespace
+
+HistoryTranslation::HistoryTranslation(
+	not_null<History*> history,
+	const LanguageId &offerFrom)
+: _history(history) {
+	this->offerFrom(offerFrom);
+}
+
+void HistoryTranslation::offerFrom(LanguageId id) {
+	if (_offerFrom == id) {
+		return;
+	}
+	_offerFrom = id;
+	auto &changes = _history->session().changes();
+	changes.historyUpdated(_history, UpdateFlag::TranslateFrom);
+}
+
+LanguageId HistoryTranslation::offeredFrom() const {
+	return _offerFrom;
+}
+
+void HistoryTranslation::translateTo(LanguageId id) {
+	if (_translatedTo == id) {
+		return;
+	}
+	_translatedTo = id;
+	auto &changes = _history->session().changes();
+	changes.historyUpdated(_history, UpdateFlag::TranslatedTo);
+}
+
+LanguageId HistoryTranslation::translatedTo() const {
+	return _translatedTo;
+}