def __setitem__(self, key, value):
# set_value() aborts the program on an unknown key
if key not in self:
raise KeyError('unknown key: %r' % (key,))
# determine type string of this key
range = self.get_range(key)
type_ = range.get_child_value(0).get_string()
v = range.get_child_value(1)
if type_ == 'type':
# v is boxed empty array, type of its elements is the allowed value type
type_str = v.get_child_value(0).get_type_string()
assert type_str.startswith('a')
type_str = type_str[1:]
elif type_ == 'enum':
# v is an array with the allowed values
assert v.get_child_value(0).get_type_string().startswith('a')
type_str = v.get_child_value(0).get_child_value(0).get_type_string()
allowed = v.unpack()
if value not in allowed:
raise ValueError('value %s is not an allowed enum (%s)' % (value, allowed))
else:
raise NotImplementedError('Cannot handle allowed type range class ' + str(type_))
self.set_value(key, GLib.Variant(type_str, value))
def __call__(self, *args, **kwargs):
# the first positional argument is the signature, unless we are calling
# a method without arguments; then signature is implied to be '()'.
if args:
signature = args[0]
args = args[1:]
if not isinstance(signature, str):
raise TypeError('first argument must be the method signature string: %r' % signature)
else:
signature = '()'
arg_variant = GLib.Variant(signature, tuple(args))
if 'result_handler' in kwargs:
# asynchronous call
user_data = (kwargs['result_handler'],
kwargs.get('error_handler'),
kwargs.get('user_data'))
self.dbus_proxy.call(self.method_name, arg_variant,
kwargs.get('flags', 0), kwargs.get('timeout', -1), None,
self.__async_result_handler, user_data)
else:
# synchronous call
result = self.dbus_proxy.call_sync(self.method_name, arg_variant,
kwargs.get('flags', 0),
kwargs.get('timeout', -1),
None)
return self._unpack_result(result)
def set_attribute(self, attributes):
for (name, format_string, value) in attributes:
self.set_attribute_value(name, GLib.Variant(format_string, value))