
/*
 *  infokcmmodel.h
 *
 *  Copyright (C) 2010 David Hubner <hubnerd@ntlworld.com>
 *
 *  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 program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 */

#ifndef INFOKCMMODEL
#define INFOKCMMODEL

//KDE
#include <KService>

//QT
#include <QObject>
#include <QStringList>
#include <QAbstractItemModel>
#include <QModelIndex>
#include <QVariant>
#include <QString>

//Local
#include "kcmtreeitem.h"

class KcmTreeItem;

class InfoKcmModel : public QAbstractItemModel 
{
  Q_OBJECT
  
  public:
    
    /**
    * Create InfoKcmModel object.
    * Abstract data model to display KCM's for a tree view
    *
    * @param parent objects parent
    */
    InfoKcmModel(QObject *parent);

    ~InfoKcmModel();

    /** 
    * Get index of item in model 
    *
    * @param row row position
    * @param column column position
    * @param parent parent of object
    * @return index of object
    */
    QModelIndex index(int row, int column, const QModelIndex& parent) const;
    QModelIndex index(int row, int column, KcmTreeItem *parent) const;
    
    /** 
    * Get parent of item in model
    */
    QModelIndex parent(const QModelIndex& index) const;
    
    /**
    * Get amount of rows under parent
    */
    int rowCount(const QModelIndex& parent) const;
    
    /**
    * Get amount of columns under parent
    */
    int columnCount(const QModelIndex& parent) const;
    
    /**
    * Get the stored data for a role
    *
    * @param index objects index
    * @param role role to retrieve data about
    */
    QVariant data(const QModelIndex& index, int role) const;
    
    /**
    * Get header information
    */
    QVariant headerData(int, Qt::Orientation, int) const;
    
    /**
    * Get set flags for a treeitem
    */
    Qt::ItemFlags flags(const QModelIndex &) const;
    
    /**
    * Get the first valid item on the treeview 
    * Checks main root items only
    *
    * @return index of valid item
    */
    QModelIndex firstValid() const;
    
    /**
    * Get all KCM keywords for all KCMs stored in the model
    */
    QStringList allChildrenKeywords();
    
    /**
     * Get QModelIndex of a KcmTreeItem
    */
    QModelIndex indexOf(KcmTreeItem *item);
    
  private:
    
    /**
    * Init tree items
    */
    void createTreeItems();
    
    /** 
    * Get a certain KCM's keywords
    */
    QStringList childrenKeywords(KcmTreeItem *kcmItem);
    
    KService::List m_moduleList;
    KcmTreeItem *m_root;
};

#endif // INFOKCMMODEL
