Method Widget

Telegram/SourceFiles/info/settings/info_settings_widget.cpp:42–160

Memento::~Memento() = default;

Widget::Widget(
	QWidget *parent,
	not_null<Controller*> controller)
: ContentWidget(parent, controller)
, _self(controller->key().settingsSelf())
, _type(controller->section().settingsType())
, _inner(setupFlexibleInnerWidget(
		_type->create(
			this,
			controller->parentController(),
			scroll(),
			controller->wrapValue(
			) | rpl::map([](Wrap wrap) { return (wrap == Wrap::Layer)
				? ::Settings::Container::Layer
				: ::Settings::Container::Section; })),
		_flexibleScroll,
		[=](Ui::RpWidget*) {
			controller->stepDataReference() = SectionCustomTopBarData{
				.backButtonEnables = _flexibleScroll.backButtonEnables.events(),
				.wrapValue = controller->wrapValue(),
			};
		}))
, _pinnedToTop(_inner->createPinnedToTop(this))
, _pinnedToBottom(_inner->createPinnedToBottom(this)) {
	_inner->sectionShowOther(
	) | rpl::on_next([=](Type type) {
		controller->showSettings(type);
	}, _inner->lifetime());

	_inner->sectionShowBack(
	) | rpl::on_next([=] {
		controller->showBackFromStack();
	}, _inner->lifetime());

	_inner->setStepDataReference(controller->stepDataReference());

	_removesFromStack.events(
	) | rpl::on_next([=](const std::vector<Type> &types) {
		const auto sections = ranges::views::all(
			types
		) | ranges::views::transform([](Type type) {
			return Section(type);
		}) | ranges::to_vector;
		controller->removeFromStack(sections);
	}, _inner->lifetime());

	if (_pinnedToTop) {
		_inner->widthValue(
		) | rpl::on_next([=](int w) {
			_pinnedToTop->resizeToWidth(w);
			setScrollTopSkip(_pinnedToTop->height());
		}, _pinnedToTop->lifetime());

		_pinnedToTop->heightValue(
		) | rpl::on_next([=](int h) {
			setScrollTopSkip(h);
		}, _pinnedToTop->lifetime());
	}