#14081 Move experimental feature selection to its own Preferences tab

Promote the experimental feature checkboxes out of the development-only System tab into a dedicated, always-visible Experimental tab so end users can opt into experimental features without enabling development features.

The m_enabledFeatures field stays owned by RiaPreferencesSystem, so its keyword, value options and legacy-keyword migration are unchanged.

ApplicationLibCode/Application/RiaPreferences.cpp

@@ -531,6 +531,10 @@ void RiaPreferences::defineUiOrdering( QString uiConfigName, caf::PdmUiOrdering&
         openTelemetryGroup->setCollapsedByDefault();
         m_openTelemetryPreferences()->uiOrdering( uiConfigName, *openTelemetryGroup );
     }
+    else if ( uiConfigName == RiaPreferences::tabNameExperimental() )
+    {
+        m_systemPreferences()->appendExperimentalFeaturesItems( uiOrdering );
+    }
     else if ( RiaApplication::enableDevelopmentFeatures() && uiConfigName == RiaPreferences::tabNameSystem() )
     {
         m_systemPreferences()->uiOrdering( uiConfigName, uiOrdering );
@@ -674,6 +678,14 @@ QString RiaPreferences::tabNameImportExport()
     return "Import/Export";
 }
 
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+QString RiaPreferences::tabNameExperimental()
+{
+    return "Experimental";
+}
+
 //--------------------------------------------------------------------------------------------------
 ///
 //--------------------------------------------------------------------------------------------------
@@ -707,6 +719,7 @@ QStringList RiaPreferences::tabNames()
     names << tabNameGeomech();
 #endif
     names << tabNameImportExport();
+    names << tabNameExperimental();
 
     if ( RiaApplication::enableDevelopmentFeatures() )
     {

ApplicationLibCode/Application/RiaPreferences.h

@@ -176,6 +176,7 @@ private:
     static QString tabNameSystem();
     static QString tabNameImportExport();
     static QString tabNameOpmFlow();
+    static QString tabNameExperimental();
 
     static double defaultMarginSize( QPageSize::PageSizeId pageSizeId );
 

ApplicationLibCode/Application/RiaPreferencesSystem.cpp

@@ -341,11 +341,6 @@ void RiaPreferencesSystem::defineUiOrdering( QString uiConfigName, caf::PdmUiOrd
         group->add( &m_mimimumAngularCellCount );
     }
 
-    {
-        caf::PdmUiGroup* group = uiOrdering.addNewGroup( "Experimental Features" );
-        group->add( &m_enabledFeatures );
-    }
-
     {
         caf::PdmUiGroup* group = uiOrdering.addNewGroup( "Developer Settings" );
         group->add( &m_keywordsForLogging );
@@ -353,6 +348,20 @@ void RiaPreferencesSystem::defineUiOrdering( QString uiConfigName, caf::PdmUiOrd
     }
 
     uiOrdering.add( &m_maximumNumberOfThreads );
+
+    // The experimental feature fields are shown on the dedicated Experimental tab, so do not let
+    // them auto-append to the System tab.
+    uiOrdering.skipRemainingFields( true );
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+void RiaPreferencesSystem::appendExperimentalFeaturesItems( caf::PdmUiOrdering& uiOrdering )
+{
+    caf::PdmUiGroup* group = uiOrdering.addNewGroup( "Experimental Features" );
+    group->add( &m_enabledFeatures );
+    group->add( &m_selectedFeatureDescription );
 }
 
 //--------------------------------------------------------------------------------------------------
@@ -410,4 +419,42 @@ void RiaPreferencesSystem::defineEditorAttribute( const caf::PdmFieldHandle* fie
             myAttr->m_selectDirectory = true;
         }
     }
+    else if ( field == &m_enabledFeatures )
+    {
+        // Report the highlighted (clicked) feature so its description can be shown below the list.
+        if ( auto* myAttr = dynamic_cast<caf::PdmUiTreeSelectionEditorAttribute*>( attribute ) )
+        {
+            myAttr->currentIndexFieldHandle = &m_currentFeatureKeyword;
+        }
+    }
+    else if ( field == &m_selectedFeatureDescription )
+    {
+        if ( auto* myAttr = dynamic_cast<caf::PdmUiTextEditorAttribute*>( attribute ) )
+        {
+            myAttr->wrapMode   = caf::PdmUiTextEditorAttribute::WordWrap;
+            myAttr->heightHint = 60;
+        }
+    }
+}
+
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+void RiaPreferencesSystem::fieldChangedByUi( const caf::PdmFieldHandle* changedField, const QVariant& oldValue, const QVariant& newValue )
+{
+    if ( changedField == &m_currentFeatureKeyword )
+    {
+        QString description;
+        for ( const auto& feature : RiaExperimentalFeatures::availableFeatures() )
+        {
+            if ( feature.keyword == m_currentFeatureKeyword() )
+            {
+                description = feature.description;
+                break;
+            }
+        }
+
+        m_selectedFeatureDescription = description;
+        m_selectedFeatureDescription.uiCapability()->updateConnectedEditors();
+    }
 }

ApplicationLibCode/Application/RiaPreferencesSystem.h

@@ -66,6 +66,8 @@ public:
     bool isLoggingActivatedForKeyword( const QString& keyword ) const;
     bool isFeatureEnabled( const QString& keyword ) const;
 
+    void appendExperimentalFeaturesItems( caf::PdmUiOrdering& uiOrdering );
+
 protected:
     void                          defineUiOrdering( QString uiConfigName, caf::PdmUiOrdering& uiOrdering ) override;
     QList<caf::PdmOptionItemInfo> calculateValueOptions( const caf::PdmFieldHandle* fieldNeedingOptions ) override;