diff options
Diffstat (limited to 'libbe/properties.py')
| -rw-r--r-- | libbe/properties.py | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/libbe/properties.py b/libbe/properties.py index 144220b..09dd20e 100644 --- a/libbe/properties.py +++ b/libbe/properties.py @@ -160,10 +160,10 @@ def _get_cached_mutable_property(self, cacher_name, property_name, default=None) if (cacher_name, property_name) not in self._mutable_property_cache_copy: return default return self._mutable_property_cache_copy[(cacher_name, property_name)] -def _cmp_cached_mutable_property(self, cacher_name, property_name, value): +def _cmp_cached_mutable_property(self, cacher_name, property_name, value, default=None): _init_mutable_property_cache(self) if (cacher_name, property_name) not in self._mutable_property_cache_hash: - return 1 # any value > non-existant old hash + _set_cached_mutable_property(self, cacher_name, property_name, default) old_hash = self._mutable_property_cache_hash[(cacher_name, property_name)] return cmp(_hash_mutable_value(value), old_hash) @@ -327,7 +327,7 @@ def primed_property(primer, initVal=None): return funcs return decorator -def change_hook_property(hook, mutable=False): +def change_hook_property(hook, mutable=False, default=None): """ Call the function hook(instance, old_value, new_value) whenever a value different from the current value is set (instance is a a @@ -359,9 +359,9 @@ def change_hook_property(hook, mutable=False): value = new_value # compare new value with cached else: value = fget(self) # compare current value with cached - if _cmp_cached_mutable_property(self, "change hook property", name, value) != 0: + if _cmp_cached_mutable_property(self, "change hook property", name, value, default) != 0: # there has been a change, cache new value - old_value = _get_cached_mutable_property(self, "change hook property", name) + old_value = _get_cached_mutable_property(self, "change hook property", name, default) _set_cached_mutable_property(self, "change hook property", name, value) if from_fset == True: # return previously cached value value = old_value |