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Telegram/SourceFiles/info/media/info_media_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 "storage/storage_shared_media.h"
+#include "data/data_search_controller.h"
+
+namespace tr {
+template <typename ...Tags>
+struct phrase;
+} // namespace tr
+
+namespace Data {
+class ForumTopic;
+} // namespace Data
+
+namespace Info::Media {
+
+using Type = Storage::SharedMediaType;
+
+[[nodiscard]] std::optional<int> TypeToTabIndex(Type type);
+[[nodiscard]] Type TabIndexToType(int index);
+[[nodiscard]] tr::phrase<> SharedMediaTitle(Type type);
+
+class InnerWidget;
+
+class Memento final : public ContentMemento {
+public:
+	explicit Memento(not_null<Controller*> controller);
+	Memento(not_null<PeerData*> peer, PeerId migratedPeerId, Type type);
+	Memento(not_null<Data::ForumTopic*> topic, Type type);
+	Memento(not_null<Data::SavedSublist*> sublist, Type type);
+
+	using SearchState = Api::DelayedSearchController::SavedState;
+
+	object_ptr<ContentWidget> createWidget(
+		QWidget *parent,
+		not_null<Controller*> controller,
+		const QRect &geometry) override;
+
+	[[nodiscard]] Section section() const override;
+
+	[[nodiscard]] Type type() const {
+		return _type;
+	}
+
+	// Only for media, not for downloads.
+	void setAroundId(FullMsgId aroundId) {
+		_aroundId = aroundId;
+	}
+	[[nodiscard]] FullMsgId aroundId() const {
+		return _aroundId;
+	}
+	void setIdsLimit(int limit) {
+		_idsLimit = limit;
+	}
+	[[nodiscard]] int idsLimit() const {
+		return _idsLimit;
+	}
+
+	void setScrollTopItem(GlobalMsgId item) {
+		_scrollTopItem = item;
+	}
+	[[nodiscard]] GlobalMsgId scrollTopItem() const {
+		return _scrollTopItem;
+	}
+	void setScrollTopItemPosition(int64 position) {
+		_scrollTopItemPosition = position;
+	}
+	[[nodiscard]] int64 scrollTopItemPosition() const {
+		return _scrollTopItemPosition;
+	}
+	void setScrollTopShift(int shift) {
+		_scrollTopShift = shift;
+	}
+	[[nodiscard]] int scrollTopShift() const {
+		return _scrollTopShift;
+	}
+	void setSearchState(SearchState &&state) {
+		_searchState = std::move(state);
+	}
+	[[nodiscard]] SearchState searchState() {
+		return std::move(_searchState);
+	}
+
+private:
+	Memento(
+		not_null<PeerData*> peer,
+		Data::ForumTopic *topic,
+		Data::SavedSublist *sublist,
+		PeerId migratedPeerId,
+		Type type);
+
+	Type _type = Type::Photo;
+	FullMsgId _aroundId;
+	int _idsLimit = 0;
+	int64 _scrollTopItemPosition = 0;
+	GlobalMsgId _scrollTopItem;
+	int _scrollTopShift = 0;
+	SearchState _searchState;
+
+};
+
+class Widget final : public ContentWidget {
+public:
+	Widget(
+		QWidget *parent,
+		not_null<Controller*> controller);
+
+	void setIsStackBottom(bool isStackBottom) override;
+
+	bool showInternal(
+		not_null<ContentMemento*> memento) override;
+
+	void setInternalState(
+		const QRect &geometry,
+		not_null<Memento*> memento);
+
+	rpl::producer<SelectedItems> selectedListValue() const override;
+	void selectionAction(SelectionAction action) override;
+
+	rpl::producer<QString> title() override;
+
+private:
+	void saveState(not_null<Memento*> memento);
+	void restoreState(not_null<Memento*> memento);
+
+	std::shared_ptr<ContentMemento> doCreateMemento() override;
+
+	InnerWidget *_inner = nullptr;
+
+};
+
+} // namespace Info::Media