QGIS API Documentation 3.27.0-Master (75dc696944)
qgsvectorlayerselectionmanager.cpp
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1/***************************************************************************
2 qgsvectorlayerselectionmanager.cpp
3 --------------------------------------
4 Date : 6.6.2013
5 Copyright : (C) 2013 Matthias Kuhn
6 Email : matthias at opengis dot ch
7 ***************************************************************************
8 * *
9 * This program is free software; you can redistribute it and/or modify *
10 * it under the terms of the GNU General Public License as published by *
11 * the Free Software Foundation; either version 2 of the License, or *
12 * (at your option) any later version. *
13 * *
14 ***************************************************************************/
15
17
18#include "qgsvectorlayer.h"
19
22 , mLayer( layer )
23{
24 connect( mLayer, &QgsVectorLayer::selectionChanged, this, &QgsVectorLayerSelectionManager::onSelectionChanged );
25}
26
28{
29 return mLayer->selectedFeatureCount();
30}
31
33{
34 mLayer->select( ids );
35}
36
38{
39 mLayer->deselect( ids );
40}
41
43{
44 mLayer->selectByIds( ids );
45}
46
48{
49 return mLayer->selectedFeatureIds();
50}
51
53{
54 return mLayer;
55}
56
57void QgsVectorLayerSelectionManager::onSelectionChanged( const QgsFeatureIds &selected, const QgsFeatureIds &deselected, bool clearAndSelect )
58{
59 emit selectionChanged( selected, deselected, clearAndSelect );
60}
Is an interface class to abstract feature selection handling.
void selectionChanged(const QgsFeatureIds &selected, const QgsFeatureIds &deselected, bool clearAndSelect)
Emitted when selection was changed.
QgsVectorLayerSelectionManager(QgsVectorLayer *layer, QObject *parent=nullptr)
void deselect(const QgsFeatureIds &ids) override
Deselect features by feature ids.
int selectedFeatureCount() override
Returns the number of features that are selected in this layer.
QgsVectorLayer * layer() const
Returns the vector layer.
void setSelectedFeatures(const QgsFeatureIds &ids) override
Change selection to the new set of features.
const QgsFeatureIds & selectedFeatureIds() const override
Returns reference to identifiers of selected features.
void select(const QgsFeatureIds &ids) override
Select features by feature ids.
Represents a vector layer which manages a vector based data sets.
void deselect(QgsFeatureId featureId)
Deselects feature by its ID.
int selectedFeatureCount() const
Returns the number of features that are selected in this layer.
Q_INVOKABLE const QgsFeatureIds & selectedFeatureIds() const
Returns a list of the selected features IDs in this layer.
void select(QgsFeatureId featureId)
Selects feature by its ID.
Q_INVOKABLE void selectByIds(const QgsFeatureIds &ids, Qgis::SelectBehavior behavior=Qgis::SelectBehavior::SetSelection)
Selects matching features using a list of feature IDs.
void selectionChanged(const QgsFeatureIds &selected, const QgsFeatureIds &deselected, bool clearAndSelect)
Emitted when selection was changed.
QSet< QgsFeatureId > QgsFeatureIds
Definition: qgsfeatureid.h:37