GraphEditor : Add nodule label visibility menu items

Changes.md

@@ -33,6 +33,7 @@ Improvements
   - Increased menu item icon sizes.
   - A lock icon is now displayed next to read-only nodes.
 - RenderPassEditor : Changed the current render pass indicator to yellow to match other context-related UI elements.
+- GraphEditor : Moved "Show Input Connections" and "Show Output Connections" to "Connections" sub-menu and added "Show Input Labels" and "Show Output Labels" items.
 
 Fixes
 -----

python/GafferUI/GraphEditor.py

@@ -215,7 +215,7 @@ def plugDirectionsWalk( gadget ) :
 
 		if Gaffer.Plug.Direction.In in plugDirections :
 			menuDefinition.append(
-				"/Show Input Connections",
+				"/Connections/Show Input Connections",
 				{
 					"checkBox" : functools.partial( cls.__getNodeInputConnectionsVisible, graphEditor.graphGadget(), node ),
 					"command" : functools.partial( cls.__setNodeInputConnectionsVisible, graphEditor.graphGadget(), node ),
@@ -225,14 +225,34 @@ def plugDirectionsWalk( gadget ) :
 
 		if Gaffer.Plug.Direction.Out in plugDirections :
 			menuDefinition.append(
-				"/Show Output Connections",
+				"/Connections/Show Output Connections",
 				{
 					"checkBox" : functools.partial( cls.__getNodeOutputConnectionsVisible, graphEditor.graphGadget(), node ),
 					"command" : functools.partial( cls.__setNodeOutputConnectionsVisible, graphEditor.graphGadget(), node ),
 					"active" : not readOnly
 				}
 			)
 
+		if Gaffer.Plug.Direction.In in plugDirections :
+			menuDefinition.append(
+				"/Connections/Show Input Labels",
+				{
+					"checkBox" : functools.partial( cls.__getNoduleLabelsVisible, node, "input" ),
+					"command" : functools.partial( cls.__setNoduleLabelsVisible, node, "input" ),
+					"active" : not readOnly,
+				}
+			)
+
+		if Gaffer.Plug.Direction.Out in plugDirections :
+			menuDefinition.append(
+				"/Connections/Show Output Labels",
+				{
+					"checkBox" : functools.partial( cls.__getNoduleLabelsVisible, node, "output" ),
+					"command" : functools.partial( cls.__setNoduleLabelsVisible, node, "output" ),
+					"active" : not readOnly,
+				}
+			)
+
 	## May be used from a slot attached to nodeContextMenuSignal() to install a
 	# standard menu item for modifying the enabled state of a node.
 	@classmethod
@@ -729,6 +749,17 @@ def __setNodeInputConnectionsVisible( cls, graphGadget, node, value ) :
 		with Gaffer.UndoScope( node.ancestor( Gaffer.ScriptNode ) ) :
 			graphGadget.setNodeInputConnectionsMinimised( node, not value )
 
+	@classmethod
+	def __getNoduleLabelsVisible( cls, node, direction ) :
+
+		return Gaffer.Metadata.value( node, f"nodeGadget:{direction}NoduleLabelsVisible" ) or False
+
+	@classmethod
+	def __setNoduleLabelsVisible( cls, node, direction, value ) :
+
+		with Gaffer.UndoScope( node.ancestor( Gaffer.ScriptNode ) ) :
+			Gaffer.Metadata.registerValue( node, f"nodeGadget:{direction}NoduleLabelsVisible", value )
+
 	@classmethod
 	def __getNodeOutputConnectionsVisible( cls, graphGadget, node ) :