# -*- Mode: Python; py-indent-offset: 4 -*-
# pygtk - Python bindings for the GTK+ widget set.
# Copyright (C) 1998-2003  James Henstridge
#
#   gtk/compat.py: half arsed compatibility code.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
# USA

__all__ = ['GTK', 'GDK', 'gtk']

from types import ModuleType as module

def _find_mod(modname):
    d = {}
    exec 'import %s; mod = %s' % (modname, modname) in d
    return d['mod']

class RemapModule(module):
    def __init__(self, name, modulenames):
        module.__init__(self)
        self.__name__ = name
        if isinstance(modulenames, str):
            modulenames = [modulenames]
        self.__modulenames = modulenames
        self.__modules = None
    def __getattr__(self, attr):
        if not self.__modules:
            self.__modules = map(_find_mod, self.__modulenames)
        for mod in self.__modules:
            try:
                value = getattr(mod, attr)
                setattr(self, attr, value)
                return value
            except AttributeError:
                pass
        raise AttributeError("module has no attribute '%s'" % attr)

GTK = RemapModule('GTK', 'gtk')
GDK = RemapModule('GDK', ['gtk.gdk', 'gtk.keysyms'])

class gtkModule(RemapModule):
    def __init__(self):
        RemapModule('gtk', ['gtk', 'gtk.gdk'])
        self.__name__ = 'gtk'
    def __getattr__(self, attr):
        if attr[:3] == 'Gtk':
            value = getattr(_find_mod('gtk'), attr[3:])
            setattr(self, attr, value)
            return value
        elif attr[:3] == 'Gdk':
            value = getattr(_find_mod('gtk.gdk'), attr[3:])
            setattr(self, attr, value)
            return value
        else:
            return RemapModule.__getattr__(self, attr)

gtk = gtkModule()