QGIS API Documentation  3.11.0-Master (68611307d7)
Public Member Functions | List of all members
QgsProcessingLayerPostProcessorInterface Class Referenceabstract

An interface for layer post-processing handlers for execution following a processing algorithm operation. More...

#include <qgsprocessingcontext.h>

Public Member Functions

virtual ~QgsProcessingLayerPostProcessorInterface ()=default
 
virtual void postProcessLayer (QgsMapLayer *layer, QgsProcessingContext &context, QgsProcessingFeedback *feedback)=0
 Post-processes the specified layer, following successful execution of a processing algorithm. More...
 

Detailed Description

An interface for layer post-processing handlers for execution following a processing algorithm operation.

Note that post-processing of a layer will ONLY occur if that layer is set to be loaded into a QGIS project on algorithm completion. See QgsProcessingContext::layersToLoadOnCompletion().

Algorithms that wish to set post-processing steps for generated layers should implement this interface in a separate class (NOT the algorithm class itself!).

Since
QGIS 3.2

Definition at line 564 of file qgsprocessingcontext.h.

Constructor & Destructor Documentation

◆ ~QgsProcessingLayerPostProcessorInterface()

virtual QgsProcessingLayerPostProcessorInterface::~QgsProcessingLayerPostProcessorInterface ( )
virtualdefault

Member Function Documentation

◆ postProcessLayer()

virtual void QgsProcessingLayerPostProcessorInterface::postProcessLayer ( QgsMapLayer layer,
QgsProcessingContext context,
QgsProcessingFeedback feedback 
)
pure virtual

Post-processes the specified layer, following successful execution of a processing algorithm.

This method always runs in the main thread and can be used to setup renderers, editor widgets, metadata, etc for the given layer.

Post-processing classes can utilize settings from the algorithm's context and report logging messages or errors via the given feedback object.

In the case of an algorithm run as part of a larger model, the post-processing occurs following the completed execution of the entire model.

Note that post-processing of a layer will ONLY occur if that layer is set to be loaded into a QGIS project on algorithm completion. See QgsProcessingContext::layersToLoadOnCompletion().


The documentation for this class was generated from the following file: