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 /***************************************************************************
  *   Copyright (C) 2007 by Joris Guisson and Ivan Vasic                    *
  *   joris.guisson@gmail.com                                               *
  *   ivasic@gmail.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 KTTORRENTFILEMODEL_HH
 #define KTTORRENTFILEMODEL_HH
 
 #include <QAbstractItemModel>
 #include <QByteArray>
 
 #include <util/constants.h>
 
 class QTreeView;
 class QSortFilterProxyModel;
 
 namespace bt
 {
 class TorrentInterface;
 class TorrentFileInterface;
 }
 
 namespace kt
 {
 class TorrentFileModel : public QAbstractItemModel
 {
     Q_OBJECT
 public:
     enum DeselectMode { KEEP_FILES, DELETE_FILES };
     TorrentFileModel(bt::TorrentInterface *tc, DeselectMode mode, QObject *parent);
     ~TorrentFileModel() override;
 
     /**
      * Check all the files in the torrent.
      */
     virtual void checkAll() = 0;
 
     /**
      * Uncheck all files in the torrent.
      */
     virtual void uncheckAll() = 0;
 
     /**
      * Invert the check of each file of the torrent
      */
     virtual void invertCheck() = 0;
 
     /**
      * Calculate the number of bytes to download
      * @return Bytes to download
      */
     virtual bt::Uint64 bytesToDownload() = 0;
 
     /**
      * Save which items are expanded.
      * @param pm Proxy model of the view
      * @param tv The QTreeView
      * @return The expanded state encoded in a byte array
      */
     virtual QByteArray saveExpandedState(QSortFilterProxyModel *pm, QTreeView *tv);
 
     /**
      * Restore the expanded state of the tree.in a QTreeView
      * @param pm Proxy model of the view
      * @param tv The QTreeView
      * @param state The encoded expanded state
      */
     virtual void loadExpandedState(QSortFilterProxyModel *pm, QTreeView *tv, const QByteArray &state);
 
     /**
      * Convert a model index to a file.
      * @param idx The model index
      * @return The file index or 0 for a directory
      **/
     virtual bt::TorrentFileInterface *indexToFile(const QModelIndex &idx) = 0;
 
     /**
      * Get the path of a directory (root directory not included)
      * @param idx The model index
      * @return The path
      */
     virtual QString dirPath(const QModelIndex &idx) = 0;
 
     /**
      * Change the priority of a bunch of items.
      * @param indexes The list of items
      * @param newpriority The new priority
      */
     virtual void changePriority(const QModelIndexList &indexes, bt::Priority newpriority) = 0;
 
     /**
      * Missing files have been marked DND, update the preview and selection information.
      */
     virtual void missingFilesMarkedDND();
 
     /**
      * Update gui if necessary
      */
     virtual void update();
 
     /**
      * Codec has changed, so update the model.
      */
     virtual void onCodecChange();
 
     /// Set the file names editable
     void setFileNamesEditable(bool on)
     {
         file_names_editable = on;
     }
 
     /// Are the file names editable
     bool fileNamesEditable() const
     {
         return file_names_editable;
     }
 
     Qt::ItemFlags flags(const QModelIndex &index) const override;
 
     virtual void filePercentageChanged(bt::TorrentFileInterface *file, float percentage);
     virtual void filePreviewChanged(bt::TorrentFileInterface *file, bool preview);
 Q_SIGNALS:
     /**
      * Emitted whenever one or more items changes check state
      */
     void checkStateChanged();
 
 protected:
     bt::TorrentInterface *tc;
     DeselectMode mode;
     bool file_names_editable;
 };
 }
 
 #endif