QgsIFeatureSelectionManager class

Is an interface class to abstract feature selection handling.

e.g. QgsVectorLayer implements this interface to manage its selections.

Derived classes

class QgsGenericFeatureSelectionManager: This selection manager synchronizes a local set of selected features with an attribute table.
class QgsVectorLayerSelectionManager

void deselect(const QgsFeatureIds& ids) pure virtual: Deselect features by feature ids.
void select(const QgsFeatureIds& ids) pure virtual: Select features by feature ids.
auto selectedFeatureCount() -> int pure virtual: Returns the number of features that are selected in this layer.
auto selectedFeatureIds() const -> const QgsFeatureIds& pure virtual: Returns reference to identifiers of selected features.
void setSelectedFeatures(const QgsFeatureIds& ids) pure virtual: Change selection to the new set of features.

void selectionChanged(const QgsFeatureIds& selected, const QgsFeatureIds& deselected, bool clearAndSelect): This signal is emitted when selection was changed.

Returns reference to identifiers of selected features.

Returns	A list of QgsFeatureId's

Change selection to the new set of features.

Parameters
ids	The ids which will be the new selection

Dismisses the current selection. Will emit the selectionChanged( const QgsFeatureIds&, const QgsFeatureIds&, bool ) signal with the clearAndSelect flag set.

This signal is emitted when selection was changed.

Parameters
selected	Newly selected feature ids
deselected	Ids of all features which have previously been selected but are not any more
clearAndSelect	In case this is set to true, the old selection was dismissed and the new selection corresponds to selected