/*=========================================================================

  Library:   CTK

  Copyright (c) Kitware Inc. 
  All rights reserved.
  Distributed under a BSD License. See LICENSE.txt file.

  This software is distributed "AS IS" WITHOUT ANY WARRANTY; without even
  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the above copyright notice for more information.

=========================================================================*/

#ifndef __ctkDICOMModel_h
#define __ctkDICOMModel_h

// Qt includes 
#include <QAbstractItemModel>
#include <QSqlDatabase>

// CTK includes
#include <ctkPimpl.h>

#include "CTKDICOMCoreExport.h"

class ctkDICOMModelPrivate;
class CTK_DICOM_CORE_EXPORT ctkDICOMModel : public QAbstractItemModel
{
  Q_OBJECT
public:
  explicit ctkDICOMModel(QObject* parent = 0);
  virtual ~ctkDICOMModel();

  void setDatabase(const QSqlDatabase& dataBase);

  virtual bool canFetchMore ( const QModelIndex & parent ) const;
  virtual int columnCount ( const QModelIndex & parent = QModelIndex() ) const;
  virtual QVariant data ( const QModelIndex & index, int role = Qt::DisplayRole ) const;
  virtual void fetchMore ( const QModelIndex & parent );
  virtual Qt::ItemFlags flags ( const QModelIndex & index ) const;
  // can return true even if rowCount returns 0, you should use canFetchMore/fetchMore to populate
  // the children.
  virtual bool hasChildren ( const QModelIndex & parent = QModelIndex() ) const;
  virtual QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole)const;
  virtual QModelIndex index ( int row, int column, const QModelIndex & parent = QModelIndex() ) const;
  virtual QModelIndex parent ( const QModelIndex & index ) const;
  virtual int rowCount ( const QModelIndex & parent = QModelIndex() ) const;
  virtual bool setHeaderData ( int section, Qt::Orientation orientation, const QVariant & value, int role = Qt::EditRole );
  // Sorting resets the model because fetched/unfetched items could disappear/appear respectively.
  virtual void sort(int column, Qt::SortOrder order = Qt::AscendingOrder);

private:
  CTK_DECLARE_PRIVATE(ctkDICOMModel);
};

#endif