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# The contents of this file are subject to the BitTorrent Open Source License
# Version 1.1 (the License). You may not copy or use this file, in either
# source code or executable form, except in compliance with the License. You
# may obtain a copy of the License at http://www.bittorrent.com/license/.
#
# Software distributed under the License is distributed on an AS IS basis,
# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
# for the specific language governing rights and limitations under the
# License.
class Preferences(object):
def __init__(self, parent=None):
self._parent = None
self._options = {}
if parent:
self._parent = parent
def initWithDict(self, dict):
self._options = dict
return self
def getDict(self):
return dict(self._options)
def getDifference(self):
if self._parent:
return dict([(x, y) for x, y in self._options.items() if y != self._parent.get(x, None)])
else:
return dict(self._options)
def __getitem__(self, option):
if self._options.has_key(option):
return self._options[option]
elif self._parent:
return self._parent[option]
return None
def __setitem__(self, option, value):
self._options.__setitem__(option, value)
def __len__(self):
l = len(self._options)
if self._parent:
return l + len(self._parent)
else:
return l
def __delitem__(self, option):
del(self._options[option])
def clear(self): self._options.clear()
def has_key(self, option):
if self._options.has_key(option):
return True
elif self._parent:
return self._parent.has_key(option)
return False
def keys(self):
l = self._options.keys()
if self._parent:
l += [key for key in self._parent.keys() if key not in l]
return l
def values(self):
l = self._options.values()
if self._parent:
l += [value for value in self._parent.values() if value not in l]
return l
def items(self):
l = self._options.items()
if self._parent:
l += [item for item in self._parent.items() if item not in l]
return l
def __iter__(self): return self.iterkeys()
def __str__(self): return 'Preferences({%s})' % str(self.items())
def iteritems(self): return self.items().__iter__()
def iterkeys(self): return self.keys().__iter__()
def itervalues(self): return self.values().__iter__()
def update(self, dict): return self._options.update(dict)
def get(self, key, failobj=None):
if not self.has_key(key):
return failobj
return self[key]
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