itemfiltermodelthreads.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2009-03-11
 * Description : Qt item model for database entries - threads management
 *
 * Copyright (C) 2009-2011 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 *
 * This program is free software; you can redistribute it
 * and/or modify it under the terms of the GNU General
 * Public License as published by the Free Software Foundation;
 * either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * ============================================================ */
 
#ifndef DIGIKAM_ITEM_FILTER_MODEL_THREADS_H
#define DIGIKAM_ITEM_FILTER_MODEL_THREADS_H
 
// Qt includes
 
#include <QThread>
 
// Local includes
 
#include "digikam_export.h"
#include "workerobject.h"
#include "itemfiltermodel.h"
 
namespace Digikam
{
 
class ItemFilterModelTodoPackage;
 
class DIGIKAM_DATABASE_EXPORT ItemFilterModelWorker : public WorkerObject
{
    Q_OBJECT
 
public:
 
    explicit ItemFilterModelWorker(ItemFilterModel::ItemFilterModelPrivate* const dd);
 
    bool checkVersion(const ItemFilterModelTodoPackage& package);
 
public Q_SLOTS:
 
    virtual void process(ItemFilterModelTodoPackage package) = 0;
 
Q_SIGNALS:
 
    void processed(const ItemFilterModelTodoPackage& package);
    void discarded(const ItemFilterModelTodoPackage& package);
 
protected:
 
    ItemFilterModel::ItemFilterModelPrivate* d;
};
 
// -----------------------------------------------------------------------------------------
 
class DIGIKAM_DATABASE_EXPORT ItemFilterModelPreparer : public ItemFilterModelWorker
{
    Q_OBJECT
 
public:
 
    explicit ItemFilterModelPreparer(ItemFilterModel::ItemFilterModelPrivate* const d)
        : ItemFilterModelWorker(d)
    {
    }
 
    void process(ItemFilterModelTodoPackage package) override;
};
 
// ----------------------------------------------------------------------------------------
 
class DIGIKAM_DATABASE_EXPORT ItemFilterModelFilterer : public ItemFilterModelWorker
{
    Q_OBJECT
 
public:
 
    explicit ItemFilterModelFilterer(ItemFilterModel::ItemFilterModelPrivate* const d)
        : ItemFilterModelWorker(d)
    {
    }
 
    void process(ItemFilterModelTodoPackage package) override;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_ITEM_FILTER_MODEL_THREADS_H