Class: QgsVectorLayerSelectedFeatureSource

class qgis.core.QgsVectorLayerSelectedFeatureSource

Bases: QgsFeatureSource, QgsExpressionContextScopeGenerator

QgsFeatureSource subclass for the selected features from a QgsVectorLayer.

Added in version 3.0.

QgsVectorLayerSelectedFeatureSource(layer: Optional[QgsVectorLayer]) Constructor for QgsVectorLayerSelectedFeatureSource, for selected features from the specified layer. The currently selected feature IDs are stored, so change to the layer selection after constructing the QgsVectorLayerSelectedFeatureSource will not be reflected.

Methods

createExpressionContextScope	rtype: Optional[QgsExpressionContextScope]
featureCount	rtype: int
fields	rtype: QgsFields
getFeatures	param request:
hasSpatialIndex	rtype: QgsFeatureSource.SpatialIndexPresence
sourceCrs	rtype: QgsCoordinateReferenceSystem
sourceName	rtype: str
wkbType	rtype: Qgis.WkbType

createExpressionContextScope(self) → QgsExpressionContextScope | None

Return type:

Optional[QgsExpressionContextScope]

featureCount(self) → int

Return type:

int

fields(self) → QgsFields

Return type:

QgsFields

getFeatures(self, request: QgsFeatureRequest = QgsFeatureRequest()) → QgsFeatureIterator

Parameters:

request (QgsFeatureRequest = QgsFeatureRequest())

Return type:

QgsFeatureIterator

hasSpatialIndex(self) → QgsFeatureSource.SpatialIndexPresence

Return type:

QgsFeatureSource.SpatialIndexPresence

sourceCrs(self) → QgsCoordinateReferenceSystem

Return type:

QgsCoordinateReferenceSystem

sourceName(self) → str

Return type:

str

wkbType(self) → Qgis.WkbType

Return type:

Qgis.WkbType