import plugin, functools

def wrapper(data,func):
	@functools.wraps(func)
	def __wrapper(*args,**kwargs):
		data.load(data.filename)
		ret = func(*args,**kwargs)
		data.save(data.filename)
		return ret
	return __wrapper

class ListData(plugin.JSONData):
	def __init__(self,filename,*args):
		plugin.JSONData.__init__(self,list(args))
		self.filename = filename
		self.load(self.filename)
	def __getitem__(self,k):
		self.load(self.filename)
		return self.value[k]
	def __setitem__(self,k,v):
		self.value[k]=v
		self.save(self.filename)
	def __getattr__(self,attr):
		if attr in self.__dict__: return self.__dict__[attr]
		return wrapper(self,getattr(self.value,attr))
	def __len__(self):
		self.load(self.filename)
		return len(self.value)
	def __iter__(self):
		self.load(self.filename)
		return iter(self.value)
	def __contains__(self):
		self.load(self.filename)
		return k in self.value