/*
 * optionstreemodel.h
 * Copyright (C) 2006  Remko Troncon
 *
 * 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
 * of the License, 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 */

#ifndef OPTIONSTREEMODEL_H
#define OPTIONSTREEMODEL_H

#include <QAbstractItemModel>
#include <QVariant>
#include <QHash>
#include <QStack>

class OptionsTree;

class OptionsTreeModel : public QAbstractItemModel
{
    Q_OBJECT

public:
    OptionsTreeModel(OptionsTree* tree, QObject* parent = 0);

    // Reimplemented from QAbstractItemModel
    int rowCount(const QModelIndex& parent = QModelIndex()) const;
    int columnCount (const QModelIndex& parent = QModelIndex()) const;
    QVariant data(const QModelIndex& index, int role) const;
    bool setData ( const QModelIndex & index, const QVariant & value, int role = Qt::EditRole );
    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;
    QModelIndex index(int row, int column, const QModelIndex & parent = QModelIndex() ) const;
    QModelIndex parent(const QModelIndex& index) const;
    Qt::ItemFlags flags(const QModelIndex& index) const;

    // custom accessors
    QString indexToOptionName(QModelIndex idx) const;

public slots:
    void setFlat(bool);

protected:
    enum Section { Name = 0, Type = 1, Value = 2, Comment = 3, SectionBound=4};
    QString getParentName(const QString &option) const;
    QModelIndex index(const QString &option, Section sec=Name) const;
    int nameToIndex(QString name) const;
    bool internalNode(QString name) const;


protected slots:
    void optionChanged(const QString& option);
    void optionAboutToBeInserted(const QString& option);
    void optionInserted(const QString& option);
    void optionAboutToBeRemoved(const QString& option);
    void optionRemoved(const QString& option);


private:
    OptionsTree* tree_;
    bool flat_;
    mutable QHash<int, QString> indexMap;
    mutable QHash<QString, int> nameMap;
    mutable int nextIdx;
    QStack<bool> realRemove;
};

#endif
