/****************************************************************************
**
** Modifications Copyright (C) 2016 Kevin B Hendricks, Stratford, ON, Canada
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the examples of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:BSD$
** You may use this file under the terms of the BSD license as follows:
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
**   * Redistributions of source code must retain the above copyright
**     notice, this list of conditions and the following disclaimer.
**   * Redistributions in binary form must reproduce the above copyright
**     notice, this list of conditions and the following disclaimer in
**     the documentation and/or other materials provided with the
**     distribution.
**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
**     of its contributors may be used to endorse or promote products derived
**     from this software without specific prior written permission.
**
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef TREEMODEL_H
#define TREEMODEL_H

#include <QAbstractItemModel>
#include <QModelIndex>
#include <QVariant>

class TreeItem;

class TreeModel : public QAbstractItemModel
{
    Q_OBJECT

public:
    TreeModel(const QStringList &headers, const QString &data,
              QObject *parent = 0);
    ~TreeModel();

    QVariant data(const QModelIndex &index, int role) const Q_DECL_OVERRIDE;
    QVariant headerData(int section, Qt::Orientation orientation,
                        int role = Qt::DisplayRole) const Q_DECL_OVERRIDE;

    QModelIndex index(int row, int column,
                      const QModelIndex &parent = QModelIndex()) const Q_DECL_OVERRIDE;
    QModelIndex parent(const QModelIndex &index) const Q_DECL_OVERRIDE;

    int rowCount(const QModelIndex &parent = QModelIndex()) const Q_DECL_OVERRIDE;
    int columnCount(const QModelIndex &parent = QModelIndex()) const Q_DECL_OVERRIDE;

    Qt::ItemFlags flags(const QModelIndex &index) const Q_DECL_OVERRIDE;
    bool setData(const QModelIndex &index, const QVariant &value,
                 int role = Qt::EditRole) Q_DECL_OVERRIDE;
    bool setHeaderData(int section, Qt::Orientation orientation,
                       const QVariant &value, int role = Qt::EditRole) Q_DECL_OVERRIDE;

    QString getAllModelData();

    bool moveRowUp(int position, const QModelIndex & parent);
    bool moveRowDown(int position, const QModelIndex & parent);

    bool insertRows(int position, int rows,
                    const QModelIndex &parent = QModelIndex()) Q_DECL_OVERRIDE;
    bool removeRows(int position, int rows,
                    const QModelIndex &parent = QModelIndex()) Q_DECL_OVERRIDE;

    TreeItem* getRootItem() { return rootItem; }; 

private:
    void setupModelData(const QStringList &lines, TreeItem *parent);
    QStringList getModelData(TreeItem * node, int lvl); 
    TreeItem *getItem(const QModelIndex &index) const;
    TreeItem *rootItem;
};

#endif // TREEMODEL_H
