threadingcache.h

/******************************************************************************
 *
 *  SPDX-FileCopyrightText: 2016 Daniel Vrátil <dvratil@kde.org>
 *
 *  SPDX-License-Identifier: GPL-2.0-or-later
 *
 *******************************************************************************/
 
#pragma once
 
#include "messageitem.h"
#include <QHash>
 
namespace MessageList
{
namespace Core
{
class Aggregation;
 
class ThreadingCache
{
public:
    ThreadingCache();
    ~ThreadingCache();
 
    [[nodiscard]] bool isEnabled() const;
    void setEnabled(bool enabled);
 
    void load(const QString &id, const Aggregation *aggregation);
    void save();
 
    void addItemToCache(MessageItem *mi);
 
    void updateParent(MessageItem *mi, MessageItem *parent);
 
    [[nodiscard]] MessageItem *parentForItem(MessageItem *mi, qint64 &parentId) const;
 
    void expireParent(MessageItem *item);
 
private:
    QHash<qint64 /* child */, qint64 /* parent */> mParentCache;
    QHash<qint64 /* ID */, MessageItem *> mItemCache;
 
    QString mCacheId;
    Aggregation::Grouping mGrouping = Aggregation::NoGrouping;
    Aggregation::Threading mThreading = Aggregation::NoThreading;
    Aggregation::ThreadLeader mThreadLeader = Aggregation::TopmostMessage;
    bool mEnabled = true;
};
} // namespace Core
} // namespace MessageList