Method setupUserIsContactViewer

Telegram/SourceFiles/data/data_session.cpp:1727–1755

}

void Session::setupUserIsContactViewer() {
	session().changes().peerUpdates(
		PeerUpdate::Flag::IsContact
	) | rpl::map([](const PeerUpdate &update) {
		return update.peer->asUser();
	}) | rpl::on_next([=](not_null<UserData*> user) {
		const auto i = _contactViews.find(peerToUser(user->id));
		if (i != _contactViews.end()) {
			for (const auto &view : i->second) {
				requestViewResize(view);
			}
		}
		if (!user->isLoaded()) {
			LOG(("API Error: "
				"userIsContactChanged() called for a not loaded user!"));
			return;
		}
		if (user->isContact()) {
			const auto history = this->history(user->id);
			_contactsList.addByName(history);
			if (!history->inChatList()) {
				_contactsNoChatsList.addByName(history);
			}
		} else if (const auto history = historyLoaded(user)) {
			_contactsNoChatsList.remove(history);
			_contactsList.remove(history);
		}
	}, _lifetime);
}

Session::~Session() = default;