Class: QgsExpressionContextScopeGenerator¶

Abstract interface for generating an expression context scope.

Note

This is an abstract class, with methods which must be implemented by a subclass.

The following methods must be implemented: createExpressionContextScope()

Class Hierarchy¶

`QgsVectorLayer`	Represents a vector layer which manages a vector based dataset.
`QgsProject`	Encapsulates a QGIS project, including sets of map layers and their styles, layouts, annotations, canvases, etc.
`QgsTemporalNavigationObject`	Implements a temporal controller based on a frame by frame navigation and animation.
`QgsVectorLayerSelectedFeatureSource`	`QgsFeatureSource` subclass for the selected features from a `QgsVectorLayer`.

Abstract Methods

This method needs to be reimplemented in all classes which implement this interface and return an expression context scope.

class qgis.core.QgsExpressionContextScopeGenerator[source]¶

Bases: object

abstract createExpressionContextScope(self) → QgsExpressionContextScope | None[source]¶

This method needs to be reimplemented in all classes which implement this interface and return an expression context scope.