#ifndef INCLUDED_QBtViewModel_h
#define INCLUDED_QBtViewModel_h

/********************************************************************
 * Copyright (C) Piotr Pszczolkowski
 *-------------------------------------------------------------------
 * This file is part of Beesoft Commander.
 *
 * Beesoft Commander 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.
 *
 * Beesoft Commander 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 Beesoft Commander; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301  USA
 *-------------------------------------------------------------------
 * Project      : Beesoft Commander
 * File         : QBtViewModel.h
 * Author       : Piotr Pszczolkowski
 * Contact      : piotr@beesoft.org
 * Creation date: 28.08.2007
 *******************************************************************/

/*------- include files:
-------------------------------------------------------------------*/
#include "BtTypes.h"
#include <QStandardItemModel>
#include <vector>

/*------- forward declarations:
-------------------------------------------------------------------*/
class QBtViewItem;
class QBtWorkedThread;
class QBtFileInfo;

/*------- class declaration:
-------------------------------------------------------------------*/
class QBtViewModel : public QStandardItemModel
{
   Q_OBJECT

//******* CONSTRUCTION / DESTRUCTION *******
public:
   QBtViewModel( QObject* = 0 );
private:
   QBtViewModel( const QBtViewModel& );
   QBtViewModel& operator=( const QBtViewModel& );

//******* CONSTANTS *******
protected:
   static const QString     THIS_DIR;
   static const QString     PARENT_DIR;
private:
   static const char* const HDR_NAME;
   static const char* const HDR_EXT;
   static const char* const HDR_ACCESS;
   static const char* const HDR_SIZE;
   static const char* const HDR_DATE;
   static const char* const HDR_TIME;
   static const char* const HDR_OWNER;
   static const char* const HDR_GROUP;
   static const char* const MASK_SELECTION_CAPTION;
   static const char* const MASK_SELECTION_PROMPT;
   static const char* const MASK_DESELECTION_PROMPT;
public:
   static const char* const DIR_ICON;
   static const char* const NOREADABLE_ICON;

//******* MEMEBERS *******
protected:
   QString          current_path_;
   qint32           file_count_;
   qint32           dir_count_;
   bool             busy_;
   QBtWorkedThread* thread_;
   SelectionsSet    selections_;

//******* METHODS *******
public:
   virtual void   update      ( const QString&     ) = 0;
   virtual void   update      ( const QModelIndex& ) = 0;
   virtual void   refresh     ()                     = 0;
   virtual bool   is_dir      ( const QModelIndex& ) = 0;
   virtual bool   is_readable ( const QModelIndex& ) = 0;
   virtual void   cdup        ()                     = 0;
   //--------------------------------------------
   const QString&        current_path      () const;
   QString               file_full_name    ( const QModelIndex& ) const;
   QString               file_path         ( const QModelIndex& ) const;
   QModelIndex           search_file       ( const QString& );
   QBtViewItem*          head_item         ( const QModelIndex& ) const;
   QBtViewItem*          head_item         ( qint32 ) const;
   QModelIndex           head_item_index   ( qint32 ) const;
   bool                  select            ( const QModelIndex& );
   void                  select_mask       ( bool, QWidget* = 0 );
   void                  revert_selections ();
   void                  clear_selections  ();
   void                  select_all        ();
   const SelectionsSet&  get_selected_items() const;
   //--------------------------------------------
   qint32                dir_count         () const { return dir_count_;         }
   qint32                file_count        () const { return file_count_;        }
   qint32                select_count      () const { return selections_.size(); }
   bool                  busy              () const { return busy_;              }
private:
   void                  select_this_item  ( bool, QBtViewItem* );
protected:
   bool                  valid_dir_name    ( const QString& );
signals:
   void                  update_finished   ();
};

#endif // INCLUDED_QBtViewModel_h