QGIS API Documentation  3.23.0-Master (dd0cd13a00)
qgsfeaturefilterprovidergroup.h
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1 /***************************************************************************
2  qgsfeaturefilterprovidergroup.h
3  -------------------------------
4  begin : 26-10-2017
5  copyright : (C) 2017 by Patrick Valsecchi
6  email : patrick dot valsecchi 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 QGSFEATUREFILTERPROVIDERGROUP_H
19 #define QGSFEATUREFILTERPROVIDERGROUP_H
20 
22 #include "qgis_server.h"
23 
24 #include <QList>
25 
33 {
34  public:
37 
43  void filterFeatures( const QgsVectorLayer *layer, QgsFeatureRequest &filterFeatures ) const override;
44 
45  QStringList layerAttributes( const QgsVectorLayer *layer, const QStringList &attributes ) const override;
46 
51  QgsFeatureFilterProvider *clone() const override SIP_FACTORY;
52 
58  QgsFeatureFilterProviderGroup &addProvider( const QgsFeatureFilterProvider *provider );
59 
60 
61  private:
62  QList<const QgsFeatureFilterProvider *> mProviders;
63 
64 
65 };
66 
67 #endif
A filter filter provider grouping several filter providers.
QgsFeatureFilterProviderGroup()=default
Constructor.
Abstract interface for use by classes that filter the features or attributes of a layer.
virtual void filterFeatures(const QgsVectorLayer *layer, QgsFeatureRequest &featureRequest) const =0
Add additional filters to the feature request to further restrict the features returned by the reques...
virtual QgsFeatureFilterProvider * clone() const =0
Create a clone of the feature filter provider.
virtual QStringList layerAttributes(const QgsVectorLayer *layer, const QStringList &attributes) const =0
Returns the list of visible attribute names from a list of attributes names for the given layer.
This class wraps a request for features to a vector layer (or directly its vector data provider).
Represents a vector layer which manages a vector based data sets.
#define SIP_FACTORY
Definition: qgis_sip.h:76