135 lines
3.7 KiB
C++
135 lines
3.7 KiB
C++
/*
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This file is part of Telegram Desktop,
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the official desktop application for the Telegram messaging service.
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For license and copyright information please follow this link:
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https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
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*/
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#pragma once
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#include "base/weak_ptr.h"
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#include "base/timer.h"
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class History;
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namespace Data {
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class ForumTopic;
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class Histories;
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struct MessagePosition;
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struct MessagesSlice;
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struct MessageUpdate;
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struct TopicUpdate;
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struct RepliesReadTillUpdate;
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class RepliesList final : public base::has_weak_ptr {
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public:
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RepliesList(
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not_null<History*> history,
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MsgId rootId,
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ForumTopic *owningTopic = nullptr);
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~RepliesList();
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void apply(const RepliesReadTillUpdate &update);
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void apply(const MessageUpdate &update);
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void apply(const TopicUpdate &update);
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void applyDifferenceTooLong();
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[[nodiscard]] rpl::producer<MessagesSlice> source(
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MessagePosition aroundId,
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int limitBefore,
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int limitAfter);
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[[nodiscard]] rpl::producer<int> fullCount() const;
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[[nodiscard]] rpl::producer<std::optional<int>> maybeFullCount() const;
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[[nodiscard]] bool unreadCountKnown() const;
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[[nodiscard]] int unreadCountCurrent() const;
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[[nodiscard]] int displayedUnreadCount() const;
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[[nodiscard]] rpl::producer<std::optional<int>> unreadCountValue() const;
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void setInboxReadTill(MsgId readTillId, std::optional<int> unreadCount);
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[[nodiscard]] MsgId inboxReadTillId() const;
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[[nodiscard]] MsgId computeInboxReadTillFull() const;
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void setOutboxReadTill(MsgId readTillId);
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[[nodiscard]] MsgId computeOutboxReadTillFull() const;
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[[nodiscard]] bool isServerSideUnread(
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not_null<const HistoryItem*> item) const;
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[[nodiscard]] std::optional<int> computeUnreadCountLocally(
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MsgId afterId) const;
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void requestUnreadCount();
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void readTill(not_null<HistoryItem*> item);
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void readTill(MsgId tillId);
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[[nodiscard]] bool canDeleteMyTopic() const;
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[[nodiscard]] rpl::lifetime &lifetime() {
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return _lifetime;
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}
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private:
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struct Viewer;
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HistoryItem *lookupRoot();
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[[nodiscard]] Histories &histories();
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void subscribeToUpdates();
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void appendClientSideMessages(MessagesSlice &slice);
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[[nodiscard]] bool buildFromData(not_null<Viewer*> viewer);
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[[nodiscard]] bool applyItemDestroyed(
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not_null<Viewer*> viewer,
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not_null<HistoryItem*> item);
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[[nodiscard]] bool applyUpdate(const MessageUpdate &update);
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void applyTopicCreator(PeerId creatorId);
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void injectRootMessageAndReverse(not_null<Viewer*> viewer);
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void injectRootMessage(not_null<Viewer*> viewer);
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void injectRootDivider(
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not_null<HistoryItem*> root,
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not_null<MessagesSlice*> slice);
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bool processMessagesIsEmpty(const MTPmessages_Messages &result);
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void loadAround(MsgId id);
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void loadBefore();
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void loadAfter();
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void changeUnreadCountByPost(MsgId id, int delta);
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void setUnreadCount(std::optional<int> count);
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void readTill(MsgId tillId, HistoryItem *tillIdItem);
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void checkReadTillEnd();
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void sendReadTillRequest();
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void reloadUnreadCountIfNeeded();
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const not_null<History*> _history;
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ForumTopic *_owningTopic = nullptr;
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const MsgId _rootId = 0;
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const bool _creating = false;
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std::vector<MsgId> _list;
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std::optional<int> _skippedBefore;
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std::optional<int> _skippedAfter;
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rpl::variable<std::optional<int>> _fullCount;
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rpl::event_stream<> _listChanges;
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rpl::event_stream<> _instantChanges;
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std::optional<MsgId> _loadingAround;
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rpl::variable<std::optional<int>> _unreadCount;
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MsgId _inboxReadTillId = 0;
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MsgId _outboxReadTillId = 0;
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HistoryItem *_divider = nullptr;
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bool _dividerWithComments = false;
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int _beforeId = 0;
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int _afterId = 0;
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base::Timer _readRequestTimer;
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mtpRequestId _readRequestId = 0;
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mtpRequestId _reloadUnreadCountRequestId = 0;
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rpl::lifetime _lifetime;
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};
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} // namespace Data
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