/*
Copyright (C) 2012 Sebastian Herbord. All rights reserved.

This file is part of Mod Organizer.

Mod Organizer 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 3 of the License, or
(at your option) any later version.

Mod Organizer 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 Mod Organizer.  If not, see <http://www.gnu.org/licenses/>.
*/

#ifndef DOWNLOADLIST_H
#define DOWNLOADLIST_H

#include <QAbstractTableModel>

class DownloadManager;

/**
 * @brief model of the list of active and completed downloads
 **/
class DownloadList : public QAbstractTableModel {

    Q_OBJECT

public:
    enum EColumn { COL_NAME = 0, COL_FILETIME, COL_STATUS };

public:
    /**
     * @brief constructor
     *
     * @param manager the download manager processing downloads
     * @param parent parent object Defaults to 0.
     **/
    explicit DownloadList(DownloadManager* manager, QObject* parent = 0);

    /**
     * @brief retrieve the number of rows to display. Invoked by Qt
     *
     * @param parent not relevant for this implementation
     * @return number of rows to display
     **/
    virtual int rowCount(const QModelIndex& parent = QModelIndex()) const;

    virtual int columnCount(const QModelIndex& parent) const;

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

    virtual QVariant headerData(int section, Qt::Orientation orientation, int role) const;

    /**
     * @brief retrieve the data to display in a specific row. Invoked by Qt
     *
     * @param index location to look up
     * @param role ... Defaults to Qt::DisplayRole.
     * @return this implementation only returns the row, the QItemDelegate implementation is expected to fetch its
     *information from the DownloadManager
     **/
    virtual QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const;

public slots:

    /**
     * @brief used to inform the model that data has changed
     *
     * @param row the row that changed. This can be negative to update the whole view
     **/
    void update(int row);

    void aboutToUpdate();

private:
    DownloadManager* m_Manager;
};

#endif // DOWNLOADLIST_H