GUI "Display Statistics" works on single variable

Previous Display Statistics required that two variables be selected. Now if only one is selected, the same data as "glance inspectStats" will be shown.

pyglance/glance/gui_statsprovider.py

@@ -60,8 +60,8 @@ class GlanceGUIStats (object) :
     
     def sendStatsInfo (self) :
         """
-        our data listeners should be sent statistics information for a comparison
-        of the currently selected variables (if possible)
+        our data listeners should be sent statistics information 
+        for the currently selected variable or variables (if possible)
         
         may raise an IncompatableDataObjects exception if it is impossible to compare the given data
         """
@@ -84,6 +84,12 @@ class GlanceGUIStats (object) :
 
         
     def sendStatsInfoPair(self, aVarName, bVarName, aDataObject, bDataObject):
+        """
+        send data listeners statistics information 
+        for the currently selected variables
+        
+        may raise an IncompatableDataObjects exception if it is impossible to compare the given data
+        """
         # check the minimum validity of our data; this call can raise an IncompatableDataObjects exception
         dataobjects.DiffInfoObject.verifyDataCompatability(aDataObject, bDataObject, aVarName, bVarName)
         
@@ -109,6 +115,10 @@ class GlanceGUIStats (object) :
                 listener.displayStatsData(aVarName, bVarName, renderedText)
 
     def sendStatsInfoSingle(self, aVarName, aDataObject):
+        """
+        send data listeners statistics information 
+        for the currently selected variable
+        """
         LOG.info ("Constructing statistics for one variable")
 
         # do the statistical analysis and collect the data that will be needed to render it nicely