add setCurrentNode to qgslayertreeview

python/PyQt6/gui/auto_generated/layertree/qgslayertreeview.sip.in

@@ -139,7 +139,7 @@ for mapping the view indexes through the view's proxy model to the source model.
 
     QModelIndex node2index( QgsLayerTreeNode *node ) const;
 %Docstring
-Returns proxy model index for a given node. If the node does not belong to the layer tree, the result is undefined
+Returns proxy model index for a given node. If the node does not belong to the layer tree, the result is undefined   
 
 Unlike :py:func:`QgsLayerTreeModel.node2index()`, calling this method correctly accounts
 for mapping the view indexes through the view's proxy model to the source model.
@@ -150,7 +150,7 @@ for mapping the view indexes through the view's proxy model to the source model.
 
     QModelIndex node2sourceIndex( QgsLayerTreeNode *node ) const;
 %Docstring
-Returns source model index for a given node. If the node does not belong to the layer tree, the result is undefined
+Returns source model index for a given node. If the node does not belong to the layer tree, the result is undefined  
 
 .. versionadded:: 3.18
 %End
@@ -213,6 +213,17 @@ Convenience methods which sets the visible state of the specified map ``layer``.
 .. seealso:: :py:func:`QgsLayerTreeNode.setItemVisibilityChecked`
 
 .. versionadded:: 3.10
+%End
+
+    void setCurrentNode( QgsLayerTreeNode *node );
+%Docstring
+Sets the currently selected ``node``.
+
+If ``node`` is ``None`` then all nodes will be deselected.
+
+.. seealso:: :py:func:`currentNode`
+
+.. versionadded:: 3.40
 %End
 
     void setCurrentLayer( QgsMapLayer *layer );
@@ -361,7 +372,7 @@ Returns if valid layers should be hidden (i.e. only invalid layers are shown).
   public slots:
     void refreshLayerSymbology( const QString &layerId );
 %Docstring
-Force refresh of layer symbology. Normally not needed as the changes of layer's renderer are monitored by the model
+Force refresh of layer symbology. Normally not needed as the changes of layer's renderer are monitored by the model  
 %End
 
     void expandAllNodes();

src/gui/layertree/qgslayertreeview.cpp

@@ -151,6 +151,17 @@ QgsMapLayer *QgsLayerTreeView::currentLayer() const
   return layerForIndex( currentIndex() );
 }
 
+void QgsLayerTreeView::setCurrentNode( QgsLayerTreeNode *node )
+{
+  if ( !node )
+  {
+    setCurrentIndex( QModelIndex() );
+    return;
+  }
+
+  setCurrentIndex( node2index( node ) );
+}   
+
 void QgsLayerTreeView::setCurrentLayer( QgsMapLayer *layer )
 {
   if ( !layer )
@@ -163,7 +174,7 @@ void QgsLayerTreeView::setCurrentLayer( QgsMapLayer *layer )
   if ( !nodeLayer )
     return;
 
-  setCurrentIndex( node2index( nodeLayer ) );
+  setCurrentNode( nodeLayer );
 }
 
 void QgsLayerTreeView::setLayerVisible( QgsMapLayer *layer, bool visible )

src/gui/layertree/qgslayertreeview.h

@@ -233,6 +233,16 @@ class GUI_EXPORT QgsLayerTreeView : public QTreeView
      */
     void setLayerVisible( QgsMapLayer *layer, bool visible );
 
+    /**
+     * Sets the currently selected \a node.
+     *
+     * If \a node is NULLPTR then all nodes will be deselected.
+     *
+     * \see currentNode()
+     * \since QGIS 3.40
+     */
+    void setCurrentNode( QgsLayerTreeNode *node );
+
     /**
      * Sets the currently selected \a layer.
      *