Move processing algorithm configuration code to gui lib

python/core/core_auto.sip

@@ -367,7 +367,6 @@
 %Include locator/qgslocator.sip
 %Include locator/qgslocatorfilter.sip
 %Include locator/qgslocatormodel.sip
-%Include processing/qgsprocessingalgorithmconfigurationwidget.sip
 %Include processing/qgsprocessingalgrunnertask.sip
 %Include processing/qgsprocessingfeedback.sip
 %Include processing/qgsprocessingprovider.sip

python/core/processing/qgsprocessingparameters.sip.in

@@ -168,6 +168,7 @@ their acceptable ranges, defaults, etc.
       FlagAdvanced,
       FlagHidden,
       FlagOptional,
+      FlagIsModelOutput,
     };
     typedef QFlags<QgsProcessingParameterDefinition::Flag> Flags;
 

python/core/processing/qgsprocessingregistry.sip.in

@@ -143,30 +143,6 @@ Return a list with all known parameter types.
 .. versionadded:: 3.2
 %End
 
-    void addAlgorithmConfigurationWidgetFactory( QgsProcessingAlgorithmConfigurationWidgetFactory *factory /Transfer/ );
-%Docstring
-Add a new configuration widget factory for customized algorithm configuration
-widgets. Ownership is taken.
-
-.. versionadded:: 3.2
-%End
-
-    void removeAlgorithmConfigurationWidgetFactory( QgsProcessingAlgorithmConfigurationWidgetFactory *factory );
-%Docstring
-Remove a configuration widget factory for customized algorithm configuration
-widgets.
-
-.. versionadded:: 3.2
-%End
-
-    QgsProcessingAlgorithmConfigurationWidget *algorithmConfigurationWidget( QgsProcessingAlgorithm *algorithm ) const;
-%Docstring
- algorithmConfigurationWidget
-@param algorithm
-@return
-%End
-
-
   signals:
 
     void providerAdded( const QString &id );

python/gui/gui_auto.sip

@@ -311,6 +311,8 @@
 %Include layout/qgslayoutviewtooltemporarymousepan.sip
 %Include layout/qgslayoutviewtoolzoom.sip
 %Include locator/qgslocatorwidget.sip
+%Include processing/qgsprocessingalgorithmconfigurationwidget.sip
 %Include processing/qgsprocessingalgorithmdialogbase.sip
 %Include processing/qgsprocessingconfigurationwidgets.sip
+%Include processing/qgsprocessingguiregistry.sip
 %Include qgsadvanceddigitizingcanvasitem.sip

python/gui/processing/qgsprocessingconfigurationwidgets.sip.in

@@ -11,44 +11,6 @@
 
 
 
-class QgsProcessingConfigurationWidgets
-{
-%Docstring
-This class is responsible for the management of processing widgets which
-QGIS internally.
-
-Standalone applications that require to show configuration widgets for processing
-algorithms will need to execute the following code to have the configuration
-interfaces available.
-
-.. code-block:: python
-
-     # At startup time
-     QgsApplicationProcessingConfigurationWidgets.initialize()
-
-     # At exit time
-     QgsApplicationProcessingConfigurationWidgets.cleanup()
-%End
-
-%TypeHeaderCode
-#include "qgsprocessingconfigurationwidgets.h"
-%End
-  public:
-
-    static void initialize();
-%Docstring
-Initialize native configuration widgets.
-%End
-
-    static void cleanup();
-%Docstring
-Cleanup native configuration widgets.
-%End
-
-  private:
-    QgsProcessingConfigurationWidgets();
-};
-
 
 
 

python/gui/processing/qgsprocessingguiregistry.sip.in

@@ -0,0 +1,61 @@
+/************************************************************************
+ * This file has been generated automatically from                      *
+ *                                                                      *
+ * src/gui/processing/qgsprocessingguiregistry.h                        *
+ *                                                                      *
+ * Do not edit manually ! Edit header and run scripts/sipify.pl again   *
+ ************************************************************************/
+
+
+
+
+
+
+class QgsProcessingGuiRegistry
+{
+%Docstring
+The QgsProcessingGuiRegistry is a home for widgets for processing
+configuration widgets.
+
+.. versionadded:: 3.2
+%End
+
+%TypeHeaderCode
+#include "qgsprocessingguiregistry.h"
+%End
+  public:
+    QgsProcessingGuiRegistry();
+    ~QgsProcessingGuiRegistry();
+
+    void addAlgorithmConfigurationWidgetFactory( QgsProcessingAlgorithmConfigurationWidgetFactory *factory /Transfer/ );
+%Docstring
+Add a new configuration widget factory for customized algorithm configuration
+widgets. Ownership is taken.
+
+.. versionadded:: 3.2
+%End
+
+    void removeAlgorithmConfigurationWidgetFactory( QgsProcessingAlgorithmConfigurationWidgetFactory *factory );
+%Docstring
+Remove a configuration widget factory for customized algorithm configuration
+widgets.
+
+.. versionadded:: 3.2
+%End
+
+    QgsProcessingAlgorithmConfigurationWidget *algorithmConfigurationWidget( QgsProcessingAlgorithm *algorithm ) const;
+%Docstring
+ algorithmConfigurationWidget
+@param algorithm
+@return
+%End
+
+};
+
+/************************************************************************
+ * This file has been generated automatically from                      *
+ *                                                                      *
+ * src/gui/processing/qgsprocessingguiregistry.h                        *
+ *                                                                      *
+ * Do not edit manually ! Edit header and run scripts/sipify.pl again   *
+ ************************************************************************/

python/gui/qgsgui.sip.in

@@ -62,6 +62,8 @@ Returns the global map layer action registry, used for registering map layer act
 Returns the global layout item GUI registry, used for registering the GUI behavior of layout items.
 %End
 
+    static QgsProcessingGuiRegistry *processingGuiRegistry();
+
     static void enableAutoGeometryRestore( QWidget *widget, const QString &key = QString() );
 %Docstring
 Register the widget to allow its position to be automatically saved and restored when open and closed.

python/plugins/processing/modeler/ModelerParametersDialog.py

@@ -53,7 +53,8 @@
                        QgsProcessingOutputDefinition,
                        QgsSettings)
 
-from qgis.gui import (QgsMessageBar,
+from qgis.gui import (QgsGui,
+                      QgsMessageBar,
                       QgsScrollArea,
                       QgsFilterLineEdit,
                       QgsHelp)
@@ -119,7 +120,7 @@ def setupUi(self):
         line.setFrameShape(QFrame.HLine)
         line.setFrameShadow(QFrame.Sunken)
         self.verticalLayout.addWidget(line)
-        self.algorithmItem = QgsApplication.instance().processingRegistry().algorithmConfigurationWidget(self._alg)
+        self.algorithmItem = QgsGui.instance().processingGuiRegistry().algorithmConfigurationWidget(self._alg)
         if self.configuration:
             self.algorithmItem.setConfiguration(self.configuration)
         self.verticalLayout.addWidget(self.algorithmItem)
@@ -332,6 +333,13 @@ def createAlgorithm(self):
                     output.setChildOutputName(dest.name())
                     outputs[name] = output
 
+            if dest.flags() & QgsProcessingParameterDefinition.FlagIsModelOutput:
+                if not name in outputs:
+                    output = QgsProcessingModelOutput(dest.name(), dest.name())
+                    output.setChildId(alg.childId())
+                    output.setChildOutputName(dest.name())
+                    outputs[dest.name()] = output
+
         alg.setModelOutputs(outputs)
 
         selectedOptions = self.dependenciesPanel.selectedoptions

src/analysis/processing/qgsalgorithmfilter.cpp

@@ -75,7 +75,11 @@ void QgsFilterAlgorithm::initAlgorithm( const QVariantMap &configuration )
     const QVariantMap outputDef = output.toMap();
     const QString name = QStringLiteral( "OUTPUT_%1" ).arg( outputDef.value( QStringLiteral( "name" ) ).toString() );
     QgsProcessingParameterFeatureSink *outputParam = new QgsProcessingParameterFeatureSink( name, outputDef.value( QStringLiteral( "name" ) ).toString() );
-    outputParam->setFlags( QgsProcessingParameterDefinition::FlagHidden );
+    QgsProcessingParameterDefinition::Flags flags = QgsProcessingParameterDefinition::Flags();
+    flags |= QgsProcessingParameterDefinition::FlagHidden;
+    if ( outputDef.value( QStringLiteral( "isModelOutput" ) ).toBool() )
+      flags |= QgsProcessingParameterDefinition::FlagIsModelOutput;
+    outputParam->setFlags( flags );
     addParameter( outputParam );
     mOutputs.append( new Output( name, outputDef.value( QStringLiteral( "expression" ) ).toString() ) );
   }
@@ -92,6 +96,8 @@ QVariantMap QgsFilterAlgorithm::processAlgorithm( const QVariantMap &parameters,
   for ( Output *output : qgis::as_const( mOutputs ) )
   {
     output->sink.reset( parameterAsSink( parameters, output->name, context, output->destinationIdentifier, source->fields(), source->wkbType(), source->sourceCrs() ) );
+    if ( !output->sink )
+      return QVariantMap();
     output->expression.prepare( &expressionContext );
   }
 
@@ -115,7 +121,9 @@ QVariantMap QgsFilterAlgorithm::processAlgorithm( const QVariantMap &parameters,
     for ( Output *output : qgis::as_const( mOutputs ) )
     {
       if ( output->expression.evaluate( &expressionContext ).toBool() )
+      {
         output->sink->addFeature( f, QgsFeatureSink::FastInsert );
+      }
     }
 
     feedback->setProgress( current * step );

src/app/qgisapp.cpp

@@ -246,7 +246,6 @@ Q_GUI_EXPORT extern int qt_defaultDpiX();
 #include "qgsruntimeprofiler.h"
 #include "qgshandlebadlayers.h"
 #include "qgsprintlayout.h"
-#include "qgsprocessingconfigurationwidgets.h"
 #include "qgsprocessingregistry.h"
 #include "qgsproject.h"
 #include "qgsprojectlayergroupdialog.h"
@@ -1458,7 +1457,6 @@ QgisApp::~QgisApp()
 
   // cancel request for FileOpen events
   QgsApplication::setFileOpenEventReceiver( nullptr );
-  QgsProcessingConfigurationWidgets::cleanup();
 
   unregisterCustomLayoutDropHandler( mLayoutQptDropHandler );
 
@@ -10497,7 +10495,6 @@ void QgisApp::initNativeProcessing()
 #ifdef HAVE_3D
   QgsApplication::processingRegistry()->addProvider( new Qgs3DAlgorithms( QgsApplication::processingRegistry() ) );
 #endif
-  QgsProcessingConfigurationWidgets::initialize();
 }
 
 void QgisApp::initLayouts()

src/core/CMakeLists.txt

@@ -102,7 +102,6 @@ SET(QGIS_CORE_SRCS
   locator/qgslocatormodel.cpp
 
   processing/qgsprocessingalgorithm.cpp
-  processing/qgsprocessingalgorithmconfigurationwidget.cpp
   processing/qgsprocessingalgrunnertask.cpp
   processing/qgsprocessingcontext.cpp
   processing/qgsprocessingfeedback.cpp
@@ -669,7 +668,6 @@ SET(QGIS_CORE_MOC_HDRS
   locator/qgslocatorfilter.h
   locator/qgslocatormodel.h
 
-  processing/qgsprocessingalgorithmconfigurationwidget.h
   processing/qgsprocessingalgrunnertask.h
   processing/qgsprocessingfeedback.h
   processing/qgsprocessingprovider.h

src/core/processing/qgsprocessingparameters.h

@@ -247,6 +247,7 @@ class CORE_EXPORT QgsProcessingParameterDefinition
       FlagAdvanced = 1 << 1, //!< Parameter is an advanced parameter which should be hidden from users by default
       FlagHidden = 1 << 2, //!< Parameter is hidden and should not be shown to users
       FlagOptional = 1 << 3, //!< Parameter is optional
+      FlagIsModelOutput = 1 << 4, //!< Destination parameter is final output. The parameter name will be used.
     };
     Q_DECLARE_FLAGS( Flags, Flag )
 

src/core/processing/qgsprocessingregistry.cpp

@@ -18,7 +18,6 @@
 #include "qgsprocessingregistry.h"
 #include "qgsvectorfilewriter.h"
 #include "qgsprocessingparametertypeimpl.h"
-#include "qgsprocessingalgorithmconfigurationwidget.h"
 
 QgsProcessingRegistry::QgsProcessingRegistry( QObject *parent SIP_TRANSFERTHIS )
   : QObject( parent )
@@ -189,28 +188,3 @@ QList<QgsProcessingParameterType *> QgsProcessingRegistry::parameterTypes() cons
 {
   return mParameterTypes.values();
 }
-
-void QgsProcessingRegistry::addAlgorithmConfigurationWidgetFactory( QgsProcessingAlgorithmConfigurationWidgetFactory *factory )
-{
-  mAlgorithmConfigurationWidgetFactories.append( factory );
-}
-
-void QgsProcessingRegistry::removeAlgorithmConfigurationWidgetFactory( QgsProcessingAlgorithmConfigurationWidgetFactory *factory )
-{
-  mAlgorithmConfigurationWidgetFactories.removeAll( factory );
-  delete factory;
-}
-
-QgsProcessingAlgorithmConfigurationWidget *QgsProcessingRegistry::algorithmConfigurationWidget( QgsProcessingAlgorithm *algorithm ) const
-{
-  for ( const auto *factory : mAlgorithmConfigurationWidgetFactories )
-  {
-    if ( factory->canCreateFor( algorithm ) )
-    {
-      return factory->create( algorithm );
-    }
-  }
-
-  return nullptr;
-}
-

src/core/processing/qgsprocessingregistry.h

@@ -169,30 +169,6 @@ class CORE_EXPORT QgsProcessingRegistry : public QObject
      */
     QList<QgsProcessingParameterType *> parameterTypes() const;
 
-    /**
-     * Add a new configuration widget factory for customized algorithm configuration
-     * widgets. Ownership is taken.
-     *
-     * \since QGIS 3.2
-     */
-    void addAlgorithmConfigurationWidgetFactory( QgsProcessingAlgorithmConfigurationWidgetFactory *factory SIP_TRANSFER );
-
-    /**
-     * Remove a configuration widget factory for customized algorithm configuration
-     * widgets.
-     *
-     * \since QGIS 3.2
-     */
-    void removeAlgorithmConfigurationWidgetFactory( QgsProcessingAlgorithmConfigurationWidgetFactory *factory );
-
-    /**
-     * @brief algorithmConfigurationWidget
-     * @param algorithm
-     * @return
-     */
-    QgsProcessingAlgorithmConfigurationWidget *algorithmConfigurationWidget( QgsProcessingAlgorithm *algorithm ) const;
-
-
   signals:
 
     //! Emitted when a provider has been added to the registry.
@@ -224,8 +200,6 @@ class CORE_EXPORT QgsProcessingRegistry : public QObject
     //! Hash of available parameter types by id. This object owns the pointers.
     QMap<QString, QgsProcessingParameterType *> mParameterTypes;
 
-    QList <QgsProcessingAlgorithmConfigurationWidgetFactory *> mAlgorithmConfigurationWidgetFactories;
-
 #ifdef SIP_RUN
     QgsProcessingRegistry( const QgsProcessingRegistry &other );
 #endif

src/gui/CMakeLists.txt

@@ -192,8 +192,10 @@ SET(QGIS_GUI_SRCS
   ogr/qgsnewogrconnection.cpp
   ogr/qgsvectorlayersaveasdialog.cpp
 
+  processing/qgsprocessingalgorithmconfigurationwidget.cpp
   processing/qgsprocessingalgorithmdialogbase.cpp
   processing/qgsprocessingconfigurationwidgets.cpp
+  processing/qgsprocessingguiregistry.cpp
 
   qgisinterface.cpp
   qgsactionmenu.cpp
@@ -710,8 +712,10 @@ SET(QGIS_GUI_MOC_HDRS
 
   locator/qgslocatorwidget.h
 
+  processing/qgsprocessingalgorithmconfigurationwidget.h
   processing/qgsprocessingalgorithmdialogbase.h
   processing/qgsprocessingconfigurationwidgets.h
+  processing/qgsprocessingguiregistry.h
 )
 SET_PROPERTY(GLOBAL PROPERTY QGIS_GUI_MOC_HDRS ${QGIS_GUI_MOC_HDRS})
 
@@ -870,10 +874,11 @@ INCLUDE_DIRECTORIES(
   ${CMAKE_SOURCE_DIR}/src/gui/auth
   ${CMAKE_SOURCE_DIR}/src/gui/editorwidgets
   ${CMAKE_SOURCE_DIR}/src/gui/editorwidgets/core
+  ${CMAKE_SOURCE_DIR}/src/gui/effects
   ${CMAKE_SOURCE_DIR}/src/gui/layertree
   ${CMAKE_SOURCE_DIR}/src/gui/layout
-  ${CMAKE_SOURCE_DIR}/src/gui/effects
   ${CMAKE_SOURCE_DIR}/src/gui/ogr
+  ${CMAKE_SOURCE_DIR}/src/gui/processing
   ${CMAKE_SOURCE_DIR}/src/core
   ${CMAKE_SOURCE_DIR}/src/core/annotations
   ${CMAKE_SOURCE_DIR}/src/core/auth