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Commit Description:
Merge pull request #17 from nattee/master...
Commit Description:
Merge pull request #17 from nattee/master
upgrade to current working snapshot
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lib/assets/Lib/browser/local_storage.py
| 92 lines
| 2.9 KiB
| text/x-python
| PythonLexer
|
| r584 | # local storage in browser | |||
| import sys | ||||
| from javascript import JSObject | ||||
| from browser import window, console | ||||
| has_local_storage = hasattr(window, 'localStorage') | ||||
| class __UnProvided(): | ||||
| pass | ||||
| class LocalStorage(): | ||||
| storage_type = "local_storage" | ||||
| def __init__(self): | ||||
| if not has_local_storage: | ||||
| raise EnvironmentError("LocalStorage not available") | ||||
| self.store = JSObject(window.localStorage) | ||||
| def __delitem__(self, key): | ||||
| if (not isinstance(key, str)): | ||||
| raise TypeError("key must be string") | ||||
| if key not in self: | ||||
| raise KeyError(key) | ||||
| self.store.removeItem(key) | ||||
| def __getitem__(self, key): | ||||
| if (not isinstance(key, str)): | ||||
| raise TypeError("key must be string") | ||||
| res = __BRYTHON__.JSObject(self.store.getItem(key)) | ||||
| if res is not None: | ||||
| return res | ||||
| raise KeyError(key) | ||||
| def __setitem__(self, key, value): | ||||
| if (not isinstance(key, str)): | ||||
| raise TypeError("key must be string") | ||||
| if (not isinstance(value, str)): | ||||
| raise TypeError("value must be string") | ||||
| self.store.setItem(key, value) | ||||
| # implement "in" functionality | ||||
| def __contains__(self, key): | ||||
| if (not isinstance(key, str)): | ||||
| raise TypeError("key must be string") | ||||
| res = __BRYTHON__.JSObject(self.store.getItem(key)) | ||||
| if res is None: | ||||
| return False | ||||
| return True | ||||
| def __iter__(self): | ||||
| keys = self.keys() | ||||
| return keys.__iter__() | ||||
| def get(self, key, default=None): | ||||
| if (not isinstance(key, str)): | ||||
| raise TypeError("key must be string") | ||||
| return __BRYTHON__.JSObject(self.store.getItem(key)) or default | ||||
| def pop(self, key, default=__UnProvided()): | ||||
| if (not isinstance(key, str)): | ||||
| raise TypeError("key must be string") | ||||
| if type(default) is __UnProvided: | ||||
| ret = self.get(key) | ||||
| del self[key] # will throw key error if doesn't exist | ||||
| return ret | ||||
| else: | ||||
| if key in self: | ||||
| ret = self.get(key) | ||||
| del self[key] | ||||
| return ret | ||||
| else: | ||||
| return default | ||||
| # while a real dict provides a view, returning a generator would less helpful than simply returning a list | ||||
| # and creating a custom iterator is overkill and would likely result in slower performance | ||||
| def keys(self): | ||||
| return [__BRYTHON__.JSObject(self.store.key(i)) for i in range(self.store.length)] | ||||
| def values(self): | ||||
| return [__BRYTHON__.JSObject(self.__getitem__(k)) for k in self.keys()] | ||||
| def items(self): | ||||
| return list(zip(self.keys(), self.values())) | ||||
| def clear(self): | ||||
| self.store.clear() | ||||
| def __len__(self): | ||||
| return self.store.length | ||||
| if has_local_storage: | ||||
| storage = LocalStorage() | ||||