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Telegram/SourceFiles/info/settings/info_settings_widget.h

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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
+*/
+#pragma once
+
+#include "info/info_content_widget.h"
+#include "info/info_controller.h"
+#include "info/info_flexible_scroll.h"
+
+namespace Settings {
+class AbstractSection;
+} // namespace Settings
+
+namespace Info {
+namespace Settings {
+
+using Type = Section::SettingsType;
+
+struct Tag;
+
+struct SectionCustomTopBarData {
+	rpl::producer<> backButtonEnables;
+	rpl::producer<Info::Wrap> wrapValue;
+};
+
+class Memento final : public ContentMemento {
+public:
+	Memento(not_null<UserData*> self, Type type);
+
+	object_ptr<ContentWidget> createWidget(
+		QWidget *parent,
+		not_null<Controller*> controller,
+		const QRect &geometry) override;
+
+	Section section() const override;
+
+	Type type() const {
+		return _type;
+	}
+
+	not_null<UserData*> self() const {
+		return settingsSelf();
+	}
+
+	~Memento();
+
+private:
+	Type _type = Type();
+
+};
+
+class Widget final : public ContentWidget {
+public:
+	Widget(
+		QWidget *parent,
+		not_null<Controller*> controller);
+	~Widget();
+
+	not_null<UserData*> self() const;
+
+	bool showInternal(
+		not_null<ContentMemento*> memento) override;
+
+	void setInternalState(
+		const QRect &geometry,
+		not_null<Memento*> memento);
+
+	void saveChanges(FnMut<void()> done) override;
+
+	void showFinished() override;
+	void setInnerFocus() override;
+	const Ui::RoundRect *bottomSkipRounding() const override;
+
+	rpl::producer<bool> desiredShadowVisibility() const override;
+
+	bool closeByOutsideClick() const override;
+	void checkBeforeClose(Fn<void()> close) override;
+	void checkBeforeCloseByEscape(Fn<void()> close) override;
+	rpl::producer<QString> title() override;
+
+	void enableBackButton() override;
+
+	rpl::producer<SelectedItems> selectedListValue() const override;
+	void selectionAction(SelectionAction action) override;
+	void fillTopBarMenu(const Ui::Menu::MenuCallback &addAction) override;
+
+private:
+	void saveState(not_null<Memento*> memento);
+	void restoreState(not_null<Memento*> memento);
+
+	void paintEvent(QPaintEvent *e) override;
+
+	std::shared_ptr<ContentMemento> doCreateMemento() override;
+
+	not_null<UserData*> _self;
+	Type _type = Type();
+
+	FlexibleScrollData _flexibleScroll;
+	not_null<::Settings::AbstractSection*> _inner;
+	base::weak_qptr<Ui::RpWidget> _pinnedToTop;
+	base::weak_qptr<Ui::RpWidget> _pinnedToBottom;
+
+	rpl::event_stream<std::vector<Type>> _removesFromStack;
+
+};
+
+} // namespace Settings
+} // namespace Info