PresetsOnlyParameterValueWidget : Adapt to new PlugValueWidget API

python/GafferCortexUI/PresetsOnlyParameterValueWidget.py

@@ -67,22 +67,23 @@ def __init__( self, parameterHandler, **kw ) :
 		GafferUI.PlugValueWidget.__init__( self, self.__menuButton, self.__parameterHandler.plug(), **kw )
 
 		self._addPopupMenu( self.__menuButton )
-		self._updateFromPlug()
 
-	def _updateFromPlug( self ) :
+	def _updateFromValues( self, values, exception ) :
 
 		with self.getContext() :
 			self.__parameterHandler.setParameterValue()
 
-		self.__menuButton.setEnabled( self._editable() )
-
 		text = ""
 		if self.getPlug() is not None :
 			with self.getContext() :
 				text = self.__parameterHandler.parameter().getCurrentPresetName() or "Invalid"
 
 		self.__menuButton.setText( text )
 
+	def _updateFromEditable( self ) :
+
+		self.__menuButton.setEnabled( self._editable() )
+
 	def __menuDefinition( self ) :
 
 		result = IECore.MenuDefinition()