/* This file is part of the KDE project
 * Copyright (C) 2010 Matus Talcik <matus.talcik@gmail.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library 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
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */
/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, 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 General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights.  These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
**
****************************************************************************/
#include <QAbstractItemModel>

#include <kundo2qstack.h>
#include <QItemSelectionModel>
#include <QIcon>
#include <kundo2command.h>
#include "kis_types.h"
#include "kis_canvas2.h"
#include "kis_view2.h"
#include "kis_image.h"
#include "kis_paint_device.h"

class KisUndoModel : public QAbstractItemModel
{
    Q_OBJECT
public:
    KisUndoModel(QObject *parent = 0);

    KUndo2QStack *stack() const;

    virtual QModelIndex index(int row, int column,
    const QModelIndex &parent = QModelIndex()) const;
    virtual QModelIndex parent(const QModelIndex &child) const;
    virtual int rowCount(const QModelIndex &parent = QModelIndex()) const;
    virtual int columnCount(const QModelIndex &parent = QModelIndex()) const;
    virtual QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;

    QModelIndex selectedIndex() const;
    QItemSelectionModel *selectionModel() const;

    QString emptyLabel() const;
    void setEmptyLabel(const QString &label);

    void setCleanIcon(const QIcon &icon);
    QIcon cleanIcon() const;

    void setCanvas(KisCanvas2* canvas);

public slots:
    void setStack(KUndo2QStack *stack);
    void addImage(int idx);

private slots:
    void stackChanged();
    void stackDestroyed(QObject *obj);
    void setStackCurrentIndex(const QModelIndex &index);

private:
    bool m_blockOutgoingHistoryChange;
    KUndo2QStack *m_stack;
    QItemSelectionModel *m_sel_model;
    QString m_empty_label;
    QIcon m_clean_icon;
    KisCanvas2* m_canvas;
    QMap<const KUndo2Command*, QImage> imageMap;
};
