Method createMultiSelect

Telegram/SourceFiles/boxes/peer_list_box.cpp:106–144

}

void PeerListBox::createMultiSelect() {
	Expects(_select == nullptr);

	auto placeholder = _controller->searchPlaceholder();
	auto entity = object_ptr<Ui::MultiSelect>(
		this,
		(_controller->selectSt()
			? *_controller->selectSt()
			: st::defaultMultiSelect),
		placeholder ? std::move(placeholder) : tr::lng_participant_filter());
	_select.create(this, std::move(entity));
	_select->heightValue(
	) | rpl::on_next(
		[this] { updateScrollSkips(); },
		lifetime());
	_select->entity()->setSubmittedCallback([=](Qt::KeyboardModifiers) {
		content()->submitted();
	});
	_select->entity()->setQueryChangedCallback([=](const QString &query) {
		if (_customQueryChangedCallback) {
			_customQueryChangedCallback(query);
		}
		searchQueryChanged(query);
	});
	_select->entity()->setItemRemovedCallback([=](uint64 itemId) {
		if (_controller->handleDeselectForeignRow(itemId)) {
			return;
		}
		if (const auto peer = _controller->session().data().peerLoaded(PeerId(itemId))) {
			if (const auto row = peerListFindRow(itemId)) {
				content()->changeCheckState(row, false, anim::type::normal);
				update();
			}
			_controller->itemDeselectedHook(peer);
		}
	});
	_select->resizeToWidth(_controller->contentWidth());
	_select->moveToLeft(0, topSelectSkip());
}

void PeerListBox::appendQueryChangedCallback(Fn<void(QString)> callback) {
	_customQueryChangedCallback = std::move(callback);