code.delx.au - offlineimap/blob - offlineimap/ui/detector.py

   1 # UI base class
   2 # Copyright (C) 2002 John Goerzen
   3 # <jgoerzen@complete.org>
   4 #
   5 #    This program is free software; you can redistribute it and/or modify
   6 #    it under the terms of the GNU General Public License as published by
   7 #    the Free Software Foundation; either version 2 of the License, or
   8 #    (at your option) any later version.
   9 #
  10 #    This program is distributed in the hope that it will be useful,
  11 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 #    GNU General Public License for more details.
  14 #
  15 #    You should have received a copy of the GNU General Public License
  16 #    along with this program; if not, write to the Free Software
  17 #    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  18
  19 import offlineimap.ui
  20 import sys
  21
  22 DEFAULT_UI_LIST = ('Tk.Blinkenlights', 'Tk.VerboseUI',
  23                    'Curses.Blinkenlights', 'TTY.TTYUI',
  24                    'Noninteractive.Basic', 'Noninteractive.Quiet')
  25
  26 def findUI(config, chosenUI=None):
  27     uistrlist = list(DEFAULT_UI_LIST)
  28     namespace={}
  29     for ui in dir(offlineimap.ui):
  30         if ui.startswith('_') or ui in ('detector', 'UIBase'):
  31             continue
  32         namespace[ui]=getattr(offlineimap.ui, ui)
  33
  34     if chosenUI is not None:
  35         uistrlist = [chosenUI]
  36     elif config.has_option("general", "ui"):
  37         uistrlist = config.get("general", "ui").replace(" ", "").split(",")
  38
  39     for uistr in uistrlist:
  40         uimod = getUImod(uistr, config.getlocaleval(), namespace)
  41         if uimod:
  42             uiinstance = uimod(config)
  43             if uiinstance.isusable():
  44                 return uiinstance
  45     sys.stderr.write("ERROR: No UIs were found usable!\n")
  46     sys.exit(200)
  47
  48 def getUImod(uistr, localeval, namespace):
  49     try:
  50         uimod = localeval.eval(uistr, namespace)
  51     except (AttributeError, NameError), e:
  52         #raise
  53         return None
  54     return uimod