/*
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_STATUS,
    COL_SIZE,
    COL_FILETIME,
    COL_MODNAME,
    COL_VERSION,
    COL_ID,
    COL_SOURCEGAME,

    // number of columns
    COL_COUNT
  };

public:

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

  void setMetaDisplay(bool metaDisplay);

  /**
   * @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;
  bool m_MetaDisplay;
};

#endif // DOWNLOADLIST_H