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qgis · Feb 23, 2025 · dc70921 · dc70921
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Showing 4 changed files with 16 additions and 4 deletions.
diff --git a/python/PyQt6/gui/auto_generated/symbology/qgscategorizedsymbolrendererwidget.sip.in b/python/PyQt6/gui/auto_generated/symbology/qgscategorizedsymbolrendererwidget.sip.in
@@ -65,7 +65,11 @@ Applies the color ramp passed on by the color ramp button
 
     void deleteCategories();
     void deleteAllCategories();
+
     void deleteUnusedCategories();
+%Docstring
+Deletes unused categories from the widget which are not used by the layer renderer.
+%End
 
     void showSymbolLevels();
 
@@ -126,7 +130,7 @@ Changes the selected symbols alone for the change button, if there is a selectio
 Applies current symbol to selected categories, or to all categories if none is selected
 %End
 
-    QList<QVariant> layerUniqueValues( const QString attrName );
+    QList<QVariant> layerUniqueValues( const QString &attrName );
 %Docstring
 Returns the list of unique values in the current widget's layer for attribute name ``attrName``.
 

diff --git a/python/gui/auto_generated/symbology/qgscategorizedsymbolrendererwidget.sip.in b/python/gui/auto_generated/symbology/qgscategorizedsymbolrendererwidget.sip.in
@@ -65,7 +65,11 @@ Applies the color ramp passed on by the color ramp button
 
     void deleteCategories();
     void deleteAllCategories();
+
     void deleteUnusedCategories();
+%Docstring
+Deletes unused categories from the widget which are not used by the layer renderer.
+%End
 
     void showSymbolLevels();
 
@@ -126,7 +130,7 @@ Changes the selected symbols alone for the change button, if there is a selectio
 Applies current symbol to selected categories, or to all categories if none is selected
 %End
 
-    QList<QVariant> layerUniqueValues( const QString attrName );
+    QList<QVariant> layerUniqueValues( const QString &attrName );
 %Docstring
 Returns the list of unique values in the current widget's layer for attribute name ``attrName``.
 

diff --git a/src/gui/symbology/qgscategorizedsymbolrendererwidget.cpp b/src/gui/symbology/qgscategorizedsymbolrendererwidget.cpp
@@ -1090,7 +1090,7 @@ void QgsCategorizedSymbolRendererWidget::deleteUnusedCategories()
   emit widgetChanged();
 }
 
-QList<QVariant> QgsCategorizedSymbolRendererWidget::layerUniqueValues( const QString attrName )
+QList<QVariant> QgsCategorizedSymbolRendererWidget::layerUniqueValues( const QString &attrName )
 {
   const int idx = mLayer->fields().lookupField( attrName );
   QList<QVariant> uniqueValues;

diff --git a/src/gui/symbology/qgscategorizedsymbolrendererwidget.h b/src/gui/symbology/qgscategorizedsymbolrendererwidget.h
@@ -164,6 +164,10 @@ class GUI_EXPORT QgsCategorizedSymbolRendererWidget : public QgsRendererWidget,
 
     void deleteCategories();
     void deleteAllCategories();
+
+    /**
+     * Deletes unused categories from the widget which are not used by the layer renderer.
+     */
     void deleteUnusedCategories();
 
     void showSymbolLevels();
@@ -241,7 +245,7 @@ class GUI_EXPORT QgsCategorizedSymbolRendererWidget : public QgsRendererWidget,
      *
      * Called by addCategories() and deleteUnusedCategories()
      */
-    QList<QVariant> layerUniqueValues( const QString attrName );
+    QList<QVariant> layerUniqueValues( const QString &attrName );
 
     QList<QgsSymbol *> selectedSymbols() override;
     QgsCategoryList selectedCategoryList();