QGIS API Documentation  3.8.0-Zanzibar (11aff65)
qgsfeaturefilterprovider.h
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1 /***************************************************************************
2  qgsfeaturefilterprovider.h
3  --------------------------
4  begin : 22-05-2015
5  copyright : (C) 2008 by St├ęphane Brunner
6  email : stephane dot brunner at camptocamp dot com
7  ***************************************************************************/
8 
9 /***************************************************************************
10  * *
11  * This program is free software; you can redistribute it and/or modify *
12  * it under the terms of the GNU General Public License as published by *
13  * the Free Software Foundation; either version 2 of the License, or *
14  * (at your option) any later version. *
15  * *
16  ***************************************************************************/
17 
18 #ifndef QGSFEATUREFILTERPROVIDER_H
19 #define QGSFEATUREFILTERPROVIDER_H
20 
21 #include <QtGlobal>
22 #include "qgis_sip.h"
23 
24 #include "qgis_core.h"
25 
26 class QString;
27 class QgsVectorLayer;
28 class QgsFeatureRequest;
29 
30 
40 class CORE_EXPORT QgsFeatureFilterProvider
41 {
42  public:
43 
44 #ifndef SIP_RUN
45 
47  QgsFeatureFilterProvider() = default;
48 
49  virtual ~QgsFeatureFilterProvider() = default;
50 
51 #endif
52 
59  virtual void filterFeatures( const QgsVectorLayer *layer, QgsFeatureRequest &featureRequest ) const = 0;
60 
65  virtual QgsFeatureFilterProvider *clone() const = 0 SIP_FACTORY;
66 };
67 
68 #endif
This class wraps a request for features to a vector layer (or directly its vector data provider)...
Abstract interface for use by classes that filter the features of a layer.
#define SIP_FACTORY
Definition: qgis_sip.h:69
Represents a vector layer which manages a vector based data sets.