tdesktop/Telegram/SourceFiles/info/downloads/info_downloads_provider.h

155 lines
4.4 KiB
C++

/*
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/media/info_media_common.h"
#include "base/weak_ptr.h"
namespace Data {
struct DownloadedId;
} // namespace Data
namespace Info {
class AbstractController;
} // namespace Info
namespace Info::Downloads {
class Provider final
: public Media::ListProvider
, private Media::ListSectionDelegate
, public base::has_weak_ptr {
public:
explicit Provider(not_null<AbstractController*> controller);
Media::Type type() override;
bool hasSelectRestriction() override;
rpl::producer<bool> hasSelectRestrictionChanges() override;
bool isPossiblyMyItem(not_null<const HistoryItem*> item) override;
std::optional<int> fullCount() override;
void restart() override;
void checkPreload(
QSize viewport,
not_null<Media::BaseLayout*> topLayout,
not_null<Media::BaseLayout*> bottomLayout,
bool preloadTop,
bool preloadBottom) override;
void refreshViewer() override;
rpl::producer<> refreshed() override;
void setSearchQuery(QString query) override;
std::vector<Media::ListSection> fillSections(
not_null<Overview::Layout::Delegate*> delegate) override;
rpl::producer<not_null<Media::BaseLayout*>> layoutRemoved() override;
Media::BaseLayout *lookupLayout(const HistoryItem *item) override;
bool isMyItem(not_null<const HistoryItem*> item) override;
bool isAfter(
not_null<const HistoryItem*> a,
not_null<const HistoryItem*> b) override;
Media::ListItemSelectionData computeSelectionData(
not_null<const HistoryItem*> item,
TextSelection selection) override;
void applyDragSelection(
Media::ListSelectedMap &selected,
not_null<const HistoryItem*> fromItem,
bool skipFrom,
not_null<const HistoryItem*> tillItem,
bool skipTill) override;
bool allowSaveFileAs(
not_null<const HistoryItem*> item,
not_null<DocumentData*> document) override;
QString showInFolderPath(
not_null<const HistoryItem*> item,
not_null<DocumentData*> document) override;
int64 scrollTopStatePosition(not_null<HistoryItem*> item) override;
HistoryItem *scrollTopStateItem(
Media::ListScrollTopState state) override;
void saveState(
not_null<Media::Memento*> memento,
Media::ListScrollTopState scrollState) override;
void restoreState(
not_null<Media::Memento*> memento,
Fn<void(Media::ListScrollTopState)> restoreScrollState) override;
private:
struct Element {
not_null<HistoryItem*> item;
int64 started = 0; // unixtime * 1000
QString path;
QStringList words;
base::flat_set<QChar> letters;
bool found = false;
};
bool sectionHasFloatingHeader() override;
QString sectionTitle(not_null<const Media::BaseLayout*> item) override;
bool sectionItemBelongsHere(
not_null<const Media::BaseLayout*> item,
not_null<const Media::BaseLayout*> previous) override;
[[nodiscard]] bool searchMode() const;
void fillSearchIndex(Element &element);
[[nodiscard]] bool computeIsFound(const Element &element) const;
void itemRemoved(not_null<const HistoryItem*> item);
void markLayoutsStale();
void clearStaleLayouts();
void refreshPostponed(bool added);
void addPostponed(not_null<const Data::DownloadedId*> entry);
void performRefresh();
void performAdd();
void addElementNow(Element &&element);
void remove(not_null<const HistoryItem*> item);
void trackItemSession(not_null<const HistoryItem*> item);
[[nodiscard]] Media::BaseLayout *getLayout(
Element element,
not_null<Overview::Layout::Delegate*> delegate);
[[nodiscard]] std::unique_ptr<Media::BaseLayout> createLayout(
Element element,
not_null<Overview::Layout::Delegate*> delegate);
const not_null<AbstractController*> _controller;
std::vector<Element> _elements;
std::optional<int> _fullCount;
base::flat_set<not_null<const HistoryItem*>> _downloading;
base::flat_set<not_null<const HistoryItem*>> _downloaded;
std::vector<Element> _addPostponed;
std::unordered_map<
not_null<const HistoryItem*>,
Media::CachedItem> _layouts;
rpl::event_stream<not_null<Media::BaseLayout*>> _layoutRemoved;
rpl::event_stream<> _refreshed;
QString _query;
QStringList _queryWords;
int _foundCount = 0;
base::flat_map<not_null<Main::Session*>, rpl::lifetime> _trackedSessions;
bool _postponedRefreshSort = false;
bool _postponedRefresh = false;
bool _started = false;
rpl::lifetime _lifetime;
};
} // namespace Info::Downloads