[pygtk] Cell renderer repository?

[Alessandro Dentella]

Hi,

  I'm in the need to write a cell render for what I believe a common thing:
  a text editor for log text that is not easy to edit in the standard
  CellRendererText. 

  I'm wandering if there exist already such a renderer or a repository of
  cell renderer ready to use. A second one I need is
  Date/DateTimeRenderer. I guess I'm not the first one that need such a
  beast... 

  sandro