Update indentation

python/core/layout/qgslayoutitemhtml.sip

@@ -221,9 +221,9 @@ class QgsLayoutItemHtml: QgsLayoutMultiFrame
 %Docstring
 Recalculates the frame sizes for the current viewport dimensions
 %End
-    void refreshExpressionContext();
 
-    void refreshDataDefinedProperty( const QgsLayoutObject::DataDefinedProperty property = QgsLayoutObject::AllProperties );
+    virtual void refreshDataDefinedProperty( const QgsLayoutObject::DataDefinedProperty property = QgsLayoutObject::AllProperties );
+
 
   protected:
 

python/core/layout/qgslayoutmultiframe.sip

@@ -266,6 +266,12 @@ class QgsLayoutMultiFrame: QgsLayoutObject, QgsLayoutUndoObjectInterface
 
   public slots:
 
+    virtual void refresh();
+
+%Docstring
+ Refreshes the multiframe, causing a recalculation of any property overrides.
+%End
+
     void update();
 %Docstring
  Forces a redraw of all child frames.
@@ -290,6 +296,14 @@ class QgsLayoutMultiFrame: QgsLayoutObject, QgsLayoutUndoObjectInterface
 .. seealso:: recalculateFrameSizes
 %End
 
+    virtual void refreshDataDefinedProperty( const QgsLayoutObject::DataDefinedProperty property = QgsLayoutObject::AllProperties );
+%Docstring
+ Refreshes a data defined ``property`` for the multi frame by reevaluating the property's value
+ and redrawing the item with this new value. If ``property`` is set to
+ QgsLayoutObject.AllProperties then all data defined properties for the item will be
+ refreshed.
+%End
+
   signals:
 
     void changed();

src/app/qgscrashhandler.h

@@ -31,6 +31,7 @@ class APP_EXPORT QgsCrashHandler
 {
 
   public:
+
     /**
      * This class doesn't need to be created by anyone as is only used to handle
      * crashes in the application.

src/core/layout/qgslayoutitemhtml.h

@@ -224,9 +224,8 @@ class CORE_EXPORT QgsLayoutItemHtml: public QgsLayoutMultiFrame
 
     //! Recalculates the frame sizes for the current viewport dimensions
     void recalculateFrameSizes() override;
-    void refreshExpressionContext();
 
-    void refreshDataDefinedProperty( const QgsLayoutObject::DataDefinedProperty property = QgsLayoutObject::AllProperties );
+    void refreshDataDefinedProperty( const QgsLayoutObject::DataDefinedProperty property = QgsLayoutObject::AllProperties ) override;
 
   protected:
 
@@ -273,6 +272,8 @@ class CORE_EXPORT QgsLayoutItemHtml: public QgsLayoutMultiFrame
 
     //! Calculates the max width of frames in the html multiframe
     double maxFrameWidth() const;
+
+    void refreshExpressionContext();
 };
 
 #endif // QGSLAYOUTITEMHTML_H

src/core/layout/qgslayoutmultiframe.cpp

@@ -233,6 +233,11 @@ void QgsLayoutMultiFrame::recalculateFrameRects()
   }
 }
 
+void QgsLayoutMultiFrame::refreshDataDefinedProperty( const QgsLayoutObject::DataDefinedProperty )
+{
+
+}
+
 QgsLayoutFrame *QgsLayoutMultiFrame::createNewFrame( QgsLayoutFrame *currentFrame, QPointF pos, QSizeF size )
 {
   if ( !currentFrame )
@@ -289,6 +294,12 @@ void QgsLayoutMultiFrame::cancelCommand()
     mLayout->undoStack()->cancelCommand();
 }
 
+void QgsLayoutMultiFrame::refresh()
+{
+  QgsLayoutObject::refresh();
+  refreshDataDefinedProperty();
+}
+
 void QgsLayoutMultiFrame::handleFrameRemoval()
 {
   if ( mBlockUpdates )

src/core/layout/qgslayoutmultiframe.h

@@ -278,6 +278,11 @@ class CORE_EXPORT QgsLayoutMultiFrame: public QgsLayoutObject, public QgsLayoutU
 
   public slots:
 
+    /**
+     * Refreshes the multiframe, causing a recalculation of any property overrides.
+     */
+    void refresh() override;
+
     /**
      * Forces a redraw of all child frames.
      */
@@ -302,6 +307,14 @@ class CORE_EXPORT QgsLayoutMultiFrame: public QgsLayoutObject, public QgsLayoutU
      */
     void recalculateFrameRects();
 
+    /**
+     * Refreshes a data defined \a property for the multi frame by reevaluating the property's value
+     * and redrawing the item with this new value. If \a property is set to
+     * QgsLayoutObject::AllProperties then all data defined properties for the item will be
+     * refreshed.
+    */
+    virtual void refreshDataDefinedProperty( const QgsLayoutObject::DataDefinedProperty property = QgsLayoutObject::AllProperties );
+
   signals:
 
     /**

tests/src/python/test_qgslayoutpagecollection.py

@@ -201,7 +201,7 @@ class TestQgsLayoutPageCollection(unittest.TestCase):
 
         # add a page
         page = QgsLayoutItemPage(l)
-        page.setPageSize(QgsLayoutSize(10,10))
+        page.setPageSize(QgsLayoutSize(10, 10))
         collection.addPage(page)
         self.assertEqual(collection.pageCount(), 1)