qgsfeaturefilterprovider.h

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/***************************************************************************
                              qgsfeaturefilterprovider.h
                              --------------------------
  begin                : 22-05-2015
  copyright            : (C) 2008 by Stéphane Brunner
  email                : stephane dot brunner at camptocamp dot 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.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSFEATUREFILTERPROVIDER_H
#define QGSFEATUREFILTERPROVIDER_H
 
#include <QtGlobal>
#include <QStringList>
#include "qgis_sip.h"
 
#include "qgis_core.h"
 
class QString;
class QgsVectorLayer;
class QgsFeatureRequest;
 
class CORE_EXPORT QgsFeatureFilterProvider
{
  public:
 
#ifndef SIP_RUN
 
    QgsFeatureFilterProvider() = default;
 
    virtual ~QgsFeatureFilterProvider() = default;
 
#endif
 
    virtual void filterFeatures( const QgsVectorLayer *layer, QgsFeatureRequest &featureRequest ) const = 0;
 
    virtual QStringList layerAttributes( const QgsVectorLayer *layer, const QStringList &attributes ) const = 0;
 
    virtual QgsFeatureFilterProvider *clone() const = 0 SIP_FACTORY;
};
 
#endif