/****************************************************************************
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** Contact: Nokia Corporation (qt-info@nokia.com)
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** This file is part of the test suite of the Qt Toolkit.
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** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
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** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
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****************************************************************************/

#ifndef DIGIKAM_MODEL_TEST_H
#define DIGIKAM_MODEL_TEST_H

// Q tincludes

#include <QObject>
#include <QAbstractItemModel>
#include <QStack>

class ModelTest : public QObject
{
    Q_OBJECT

public:

    explicit ModelTest(QAbstractItemModel* const model, QObject* const parent = nullptr);

private Q_SLOTS:

    void nonDestructiveBasicTest();
    void rowCount();
    void columnCount();
    void hasIndex();
    void index();
    void parent();
    void data();

protected Q_SLOTS:

    void runAllTests();
    void layoutAboutToBeChanged();
    void layoutChanged();
    void rowsAboutToBeInserted( const QModelIndex& parent, int start, int end );
    void rowsInserted( const QModelIndex& parent, int start, int end );
    void rowsAboutToBeRemoved( const QModelIndex& parent, int start, int end );
    void rowsRemoved( const QModelIndex& parent, int start, int end );

private:

    void checkChildren( const QModelIndex& parent, int currentDepth = 0 );

private:

    struct Changing
    {
        QModelIndex parent;
        int         oldSize;
        QVariant    last;
        QVariant    next;
    };

private:

    QAbstractItemModel*          model;

    QStack<Changing>             insert;
    QStack<Changing>             remove;

    bool                         fetchingMore;

    QList<QPersistentModelIndex> changing;
};

#endif // DIGIKAM_MODEL_TEST_H
