gpsitemsortproxymodel.h

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/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2010-03-21
 * Description : A model to hold GPS information about items.
 *
 * Copyright (C) 2010-2022 by Gilles Caulier <caulier dot gilles at gmail dot com>
 * Copyright (C) 2010      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_GPS_ITEM_SORT_PROXY_MODEL_H
#define DIGIKAM_GPS_ITEM_SORT_PROXY_MODEL_H
 
// Qt includes
 
#include <QItemSelectionModel>
#include <QSortFilterProxyModel>
#include <QAbstractItemModel>
#include <QModelIndex>
#include <QItemSelection>
 
// Local includes
 
#include "gpsitemmodel.h"
 
namespace Digikam
{
 
class GPSItemSortProxyModel : public QSortFilterProxyModel
{
    Q_OBJECT
 
public:
 
    explicit GPSItemSortProxyModel(GPSItemModel* const imageModel,
                                   QItemSelectionModel* const sourceSelectionModel);
    ~GPSItemSortProxyModel()                           override;
 
    QItemSelectionModel* mappedSelectionModel() const;
 
protected:
 
    bool lessThan(const QModelIndex& left,
                  const QModelIndex& right)      const override;
 
private:
 
    class Private;
    Private* const d;
};
 
// ----------------------------------------------------------------------------------------------------------
 
class GPSLinkItemSelectionModelPrivate;
 
class GPSLinkItemSelectionModel : public QItemSelectionModel
{
    Q_OBJECT
    Q_PROPERTY(QItemSelectionModel* linkedItemSelectionModel
               READ linkedItemSelectionModel
               WRITE setLinkedItemSelectionModel
               NOTIFY linkedItemSelectionModelChanged)
 
public:
 
    GPSLinkItemSelectionModel(QAbstractItemModel* const targetModel,
                              QItemSelectionModel* const linkedItemSelectionModel,
                              QObject* const parent = nullptr);
    explicit GPSLinkItemSelectionModel(QObject* const parent = nullptr);
    ~GPSLinkItemSelectionModel()                                                              override;
 
    QItemSelectionModel* linkedItemSelectionModel() const;
    void setLinkedItemSelectionModel(QItemSelectionModel* const selectionModel);
 
    void select(const QModelIndex& index, QItemSelectionModel::SelectionFlags command)        override;
    void select(const QItemSelection& selection, QItemSelectionModel::SelectionFlags command) override;
 
Q_SIGNALS:
 
    void linkedItemSelectionModelChanged();
 
protected:
 
    GPSLinkItemSelectionModelPrivate* const d_ptr;
 
private:
 
    Q_DECLARE_PRIVATE(GPSLinkItemSelectionModel)
    Q_PRIVATE_SLOT(d_func(), void sourceSelectionChanged(const QItemSelection& selected,
                                                         const QItemSelection& deselected))
    Q_PRIVATE_SLOT(d_func(), void sourceCurrentChanged(const QModelIndex& current))
    Q_PRIVATE_SLOT(d_func(), void slotCurrentChanged(const QModelIndex& current))
};
 
// ----------------------------------------------------------------------------------------------------------
 
class GPSModelIndexProxyMapperPrivate;
 
class GPSModelIndexProxyMapper : public QObject
{
    Q_OBJECT
 
    Q_PROPERTY(bool isConnected
               READ isConnected
               NOTIFY isConnectedChanged)
 
public:
 
    explicit GPSModelIndexProxyMapper(const QAbstractItemModel* const leftModel,
                                      const QAbstractItemModel* const rightModel,
                                      QObject* const parent = nullptr);
    ~GPSModelIndexProxyMapper() override;
 
    QModelIndex mapLeftToRight(const QModelIndex& index)                    const;
 
    QModelIndex mapRightToLeft(const QModelIndex& index)                    const;
 
    QItemSelection mapSelectionLeftToRight(const QItemSelection& selection) const;
 
    QItemSelection mapSelectionRightToLeft(const QItemSelection& selection) const;
 
    bool isConnected()                                                      const;
 
Q_SIGNALS:
 
    void isConnectedChanged();
 
private:
 
    Q_DECLARE_PRIVATE(GPSModelIndexProxyMapper)
    GPSModelIndexProxyMapperPrivate* const d_ptr;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_GPS_ITEM_SORT_PROXY_MODEL_H