2 Copyright 2008 Free Software Foundation, Inc.
3 This file is part of GNU Radio
5 GNU Radio Companion is free software; you can redistribute it and/or
6 modify it under the terms of the GNU General Public License
7 as published by the Free Software Foundation; either version 2
8 of the License, or (at your option) any later version.
10 GNU Radio Companion 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.
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 Street, Fifth Floor, Boston, MA 02110-1301, USA
19 ##@package grc.gui.Utils
20 #Utility methods and classes.
23 from UserDict import DictMixin
25 class odict(DictMixin):
27 def __init__(self, d={}):
28 self._keys = list(d.keys())
29 self._data = dict(d.copy())
31 def __setitem__(self, key, value):
32 if key not in self._data:
33 self._keys.append(key)
34 self._data[key] = value
36 def __getitem__(self, key):
37 return self._data[key]
39 def __delitem__(self, key):
41 self._keys.remove(key)
44 return list(self._keys)
48 copy_dict._data = self._data.copy()
49 copy_dict._keys = list(self._keys)
52 def exists_or_else(d, key, alt):
53 if d.has_key(key): return d[key]
57 obj = exists_or_else(d, key, [])
58 if isinstance(obj, list): return obj