Allow enabling forum, creating topics.

Telegram/SourceFiles/data/data_forum_topic.h

@@ -0,0 +1,115 @@
+/*
+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 "dialogs/dialogs_entry.h"
+
+class ChannelData;
+
+namespace Dialogs {
+class MainList;
+} // namespace Dialogs
+
+namespace Main {
+class Session;
+} // namespace Main
+
+namespace Data {
+
+class Session;
+
+class ForumTopic final : public Dialogs::Entry {
+public:
+	ForumTopic(not_null<History*> forum, MsgId rootId);
+
+	ForumTopic(const ForumTopic &) = delete;
+	ForumTopic &operator=(const ForumTopic &) = delete;
+
+	[[nodiscard]] not_null<History*> forum() const;
+	[[nodiscard]] MsgId rootId() const;
+
+	void applyTopic(const MTPForumTopic &topic);
+
+	TimeId adjustedChatListTimeId() const override;
+
+	int fixedOnTopIndex() const override;
+	bool shouldBeInChatList() const override;
+	int chatListUnreadCount() const override;
+	bool chatListUnreadMark() const override;
+	bool chatListMutedBadge() const override;
+	Dialogs::UnreadState chatListUnreadState() const override;
+	HistoryItem *chatListMessage() const override;
+	bool chatListMessageKnown() const override;
+	void requestChatListMessage() override;
+	const QString &chatListName() const override;
+	const QString &chatListNameSortKey() const override;
+	const base::flat_set<QString> &chatListNameWords() const override;
+	const base::flat_set<QChar> &chatListFirstLetters() const override;
+
+	[[nodiscard]] HistoryItem *lastMessage() const;
+	[[nodiscard]] HistoryItem *lastServerMessage() const;
+	[[nodiscard]] bool lastMessageKnown() const;
+	[[nodiscard]] bool lastServerMessageKnown() const;
+
+	void loadUserpic() override;
+	void paintUserpic(
+		Painter &p,
+		std::shared_ptr<Data::CloudImageView> &view,
+		int x,
+		int y,
+		int size) const override;
+
+	[[nodiscard]] int unreadCount() const;
+	[[nodiscard]] bool unreadCountKnown() const;
+
+	[[nodiscard]] int unreadCountForBadge() const; // unreadCount || unreadMark ? 1 : 0.
+
+	void setUnreadCount(int newUnreadCount);
+	void setUnreadMark(bool unread);
+	[[nodiscard]] bool unreadMark() const;
+
+private:
+	void indexTitleParts();
+	void applyTopicTopMessage(MsgId topMessageId);
+	void applyTopicFields(
+		int unreadCount,
+		MsgId maxInboxRead,
+		MsgId maxOutboxRead);
+	void applyChatListMessage(HistoryItem *item);
+
+	void setLastMessage(HistoryItem *item);
+	void setLastServerMessage(HistoryItem *item);
+	void setChatListMessage(HistoryItem *item);
+
+	void setInboxReadTill(MsgId upTo);
+	void setOutboxReadTill(MsgId upTo);
+
+	int chatListNameVersion() const override;
+
+	const not_null<History*> _forum;
+	const not_null<Dialogs::MainList*> _list;
+	const MsgId _rootId = 0;
+
+	QString _title;
+	base::flat_set<QString> _titleWords;
+	base::flat_set<QChar> _titleFirstLetters;
+	int _titleVersion = 0;
+
+	std::optional<MsgId> _inboxReadBefore;
+	std::optional<MsgId> _outboxReadBefore;
+	std::optional<int> _unreadCount;
+	std::optional<HistoryItem*> _lastMessage;
+	std::optional<HistoryItem*> _lastServerMessage;
+	std::optional<HistoryItem*> _chatListMessage;
+	bool _unreadMark = false;
+
+	rpl::lifetime _lifetime;
+
+};
+
+} // namespace Data