Few changes in the 'widgets' package.

* introducing __all__ in modules, so __init__ imports only public objects;
  * MultiTypeComboEntry renamed to ValidatedComboEntry and different data
    type support implemented;
  * ShortlistComboEntry introduced;
  * ValueAction and ValueToolItem introduced;
  * ComboToolAction and ComboToolItem are removed, ValueAction and
    ToolComboEntry are implemented instead;


svn: r10763

src/widgets/styledtextbuffer.py

@@ -22,6 +22,9 @@
 
 "Text buffer subclassed from gtk.TextBuffer handling L{StyledText}."
 
+__all__ = ["ALLOWED_STYLES", "MATCH_START", "MATCH_END", "MATCH_FLAVOR",
+           "MATCH_STRING", "StyledTextBuffer"]
+
 #-------------------------------------------------------------------------
 #
 # Python modules