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Telegram/SourceFiles/info/info_memento.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 "ui/rp_widget.h"
+#include "info/info_wrap_widget.h"
+#include "dialogs/dialogs_key.h"
+#include "window/section_memento.h"
+#include "base/object_ptr.h"
+
+namespace Api {
+struct WhoReadList;
+} // namespace Api
+
+namespace Storage {
+enum class SharedMediaType : signed char;
+} // namespace Storage
+
+namespace Data {
+class ForumTopic;
+class SavedSublist;
+struct ReactionId;
+} // namespace Data
+
+namespace Ui {
+class ScrollArea;
+struct ScrollToRequest;
+} // namespace Ui
+
+namespace Info {
+namespace Settings {
+struct Tag;
+} // namespace Settings
+
+namespace Downloads {
+struct Tag;
+} // namespace Downloads
+
+class ContentMemento;
+class WrapWidget;
+
+class Memento final : public Window::SectionMemento {
+public:
+	explicit Memento(not_null<PeerData*> peer);
+	Memento(not_null<PeerData*> peer, Section section);
+	explicit Memento(not_null<Data::ForumTopic*> topic);
+	Memento(not_null<Data::ForumTopic*> topic, Section section);
+	explicit Memento(not_null<Data::SavedSublist*> sublist);
+	Memento(not_null<Data::SavedSublist*> sublist, Section section);
+	Memento(Settings::Tag settings, Section section);
+	Memento(not_null<PollData*> poll, FullMsgId contextId);
+	Memento(
+		std::shared_ptr<Api::WhoReadList> whoReadIds,
+		FullMsgId contextId,
+		Data::ReactionId selected);
+	explicit Memento(std::vector<std::shared_ptr<ContentMemento>> stack);
+
+	object_ptr<Window::SectionWidget> createWidget(
+		QWidget *parent,
+		not_null<Window::SessionController*> controller,
+		Window::Column column,
+		const QRect &geometry) override;
+
+	object_ptr<Ui::LayerWidget> createLayer(
+		not_null<Window::SessionController*> controller,
+		const QRect &geometry) override;
+
+	rpl::producer<> removeRequests() const override {
+		return _removeRequests.events();
+	}
+
+	int stackSize() const {
+		return int(_stack.size());
+	}
+	std::vector<std::shared_ptr<ContentMemento>> takeStack();
+
+	not_null<ContentMemento*> content() {
+		Expects(!_stack.empty());
+
+		return _stack.back().get();
+	}
+
+	static Section DefaultSection(not_null<PeerData*> peer);
+	static std::shared_ptr<Memento> Default(not_null<PeerData*> peer);
+
+	~Memento();
+
+private:
+	static std::vector<std::shared_ptr<ContentMemento>> DefaultStack(
+		not_null<PeerData*> peer,
+		Section section);
+	static std::vector<std::shared_ptr<ContentMemento>> DefaultStack(
+		not_null<Data::ForumTopic*> topic,
+		Section section);
+	static std::vector<std::shared_ptr<ContentMemento>> DefaultStack(
+		not_null<Data::SavedSublist*> sublist,
+		Section section);
+	static std::vector<std::shared_ptr<ContentMemento>> DefaultStack(
+		Settings::Tag settings,
+		Section section);
+	static std::vector<std::shared_ptr<ContentMemento>> DefaultStack(
+		not_null<PollData*> poll,
+		FullMsgId contextId);
+	static std::vector<std::shared_ptr<ContentMemento>> DefaultStack(
+		std::shared_ptr<Api::WhoReadList> whoReadIds,
+		FullMsgId contextId,
+		Data::ReactionId selected);
+
+	static std::shared_ptr<ContentMemento> DefaultContent(
+		not_null<PeerData*> peer,
+		Section section);
+	static std::shared_ptr<ContentMemento> DefaultContent(
+		not_null<Data::ForumTopic*> topic,
+		Section section);
+	static std::shared_ptr<ContentMemento> DefaultContent(
+		not_null<Data::SavedSublist*> sublist,
+		Section section);
+
+	std::vector<std::shared_ptr<ContentMemento>> _stack;
+	rpl::event_stream<> _removeRequests;
+	rpl::lifetime _lifetime;
+
+};
+
+class MoveMemento final : public Window::SectionMemento {
+public:
+	MoveMemento(object_ptr<WrapWidget> content);
+
+	object_ptr<Window::SectionWidget> createWidget(
+		QWidget *parent,
+		not_null<Window::SessionController*> controller,
+		Window::Column column,
+		const QRect &geometry) override;
+
+	object_ptr<Ui::LayerWidget> createLayer(
+		not_null<Window::SessionController*> controller,
+		const QRect &geometry) override;
+
+	bool instant() const override {
+		return true;
+	}
+
+	object_ptr<WrapWidget> takeContent(
+		QWidget *parent,
+		Wrap wrap);
+
+private:
+	object_ptr<WrapWidget> _content;
+
+};
+
+} // namespace Info