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qitemselectionmodel_p.h

/****************************************************************************
**
** Copyright (C) 1992-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at sales@trolltech.com.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/

#ifndef QITEMSELECTIONMODEL_P_H
#define QITEMSELECTIONMODEL_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "private/qobject_p.h"

#ifndef QT_NO_ITEMVIEWS
class QItemSelectionModelPrivate: public QObjectPrivate
{
    Q_DECLARE_PUBLIC(QItemSelectionModel)
public:
    QItemSelectionModelPrivate()
        : model(0), currentCommand(QItemSelectionModel::NoUpdate) {}

    QItemSelection expandSelection(const QItemSelection &selection,
                                   QItemSelectionModel::SelectionFlags command) const;
    
    void _q_rowsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
    void _q_columnsAboutToBeRemoved(const QModelIndex &parent, int start, int end);
    void _q_rowsAboutToBeInserted(const QModelIndex &parent, int start, int end);
    void _q_columnsAboutToBeInserted(const QModelIndex &parent, int start, int end);
    void _q_layoutAboutToBeChanged();
    void _q_layoutChanged();

    inline void remove(QList<QItemSelectionRange> &r)
    {
        QList<QItemSelectionRange>::const_iterator it = r.constBegin();
        for (; it != r.constEnd(); ++it)
            ranges.removeAll(*it);
    }

    inline void finalize()
    {
        ranges.merge(currentSelection, currentCommand);
        currentSelection.clear();
    }

    QPointer<QAbstractItemModel> model;
    QItemSelection ranges;
    QItemSelection currentSelection;
    QPersistentModelIndex currentIndex;
    QItemSelectionModel::SelectionFlags currentCommand;
    QList<QPersistentModelIndex> savedPersistentIndexes;
    QList<QPersistentModelIndex> savedPersistentCurrentIndexes;
};

#endif // QT_NO_ITEMVIEWS

#endif // QITEMSELECTIONMODEL_P_H

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