/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2013-02-18
 * Description : Sync QItemSelectionModel of ItemFilterModel and TableViewModel
 *
 * Copyright (C) 2017-2020 by Gilles Caulier <caulier dot gilles at gmail dot com>
 * Copyright (C) 2013      by Michael G. Hansen <mike at mghansen 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_TABLE_VIEW_SELECTION_MODEL_SYNCER_H
#define DIGIKAM_TABLE_VIEW_SELECTION_MODEL_SYNCER_H

// Qt includes

#include <QItemSelectionModel>
#include <QObject>

namespace Digikam
{

class TableViewShared;

class TableViewSelectionModelSyncer : public QObject
{
    Q_OBJECT

public:

    explicit TableViewSelectionModelSyncer(TableViewShared* const sharedObject, QObject* const parent = nullptr);
    ~TableViewSelectionModelSyncer() override;

    QModelIndex toSource(const QModelIndex& targetIndex)                         const;
    QModelIndex toTarget(const QModelIndex& sourceIndex)                         const;
    QItemSelection itemSelectionToSource(const QItemSelection& selection)        const;
    QItemSelection itemSelectionToTarget(const QItemSelection& selection)        const;
    int targetModelColumnCount()                                                 const;
    QItemSelection targetIndexToRowItemSelection(const QModelIndex& targetIndex) const;

private Q_SLOTS:

    void slotSourceModelReset();
    void slotSourceCurrentChanged(const QModelIndex& current, const QModelIndex& previous);
/*
    void slotSourceCurrentColumnChanged(const QModelIndex& current, const QModelIndex& previous);
    void slotSourceCurrentRowChanged(const QModelIndex& current, const QModelIndex& previous);
*/
    void slotSourceSelectionChanged(const QItemSelection& selected, const QItemSelection& deselected);
    void slotTargetCurrentChanged(const QModelIndex& current, const QModelIndex& previous);
/*
    void slotTargetCurrentColumnChanged(const QModelIndex& current, const QModelIndex& previous);
    void slotTargetCurrentRowChanged(const QModelIndex& current, const QModelIndex& previous);
*/
    void slotTargetSelectionChanged(const QItemSelection& selected, const QItemSelection& deselected);
    void slotTargetColumnsInserted(const QModelIndex& parent, int start, int end);
    void slotTargetModelRowsInserted(const QModelIndex& parent, int start, int end);
    void slotTargetModelReset();
    void slotDoInitialSync();

public Q_SLOTS:

    void slotSetActive(const bool isActive);

private:

    class Private;

    const QScopedPointer<Private> d;
    TableViewShared* const        s;
};

} // namespace Digikam

#endif // DIGIKAM_TABLE_VIEW_SELECTION_MODEL_SYNCER_H
