Bug 3011: change old-style classes to new-style classes

svn: r12559

src/docgen/SpreadSheetDoc.py

@@ -25,7 +25,7 @@ import BaseDoc
 # 
 #
 #------------------------------------------------------------------------
-class SpreadSheetDoc:
+class SpreadSheetDoc(object):
     def __init__(self,type, orientation=BaseDoc.PAPER_PORTRAIT):
         self.orientation = orientation
         if orientation == BaseDoc.PAPER_PORTRAIT:

src/docgen/TabbedDoc.py

@@ -23,7 +23,7 @@
 # 
 #
 #------------------------------------------------------------------------
-class TabbedDoc:
+class TabbedDoc(object):
     def __init__(self, columns):
         self.columns = columns
         self.name = ""

src/docgen/TextBufDoc.py

@@ -81,7 +81,7 @@ class DisplayBuf(ManagedWindow.ManagedWindow):
     def get_title(self):
         return self.title
 
-class DocumentManager:
+class DocumentManager(object):
     def __init__(self, title, document, text_view):
         self.title = title
         self.document = document