class CsTag:
	def __init__(self,parent,text=""):
		self.parent = parent
		self.txt=text
		self.factory = []
		if self.parent:
			self.parent.addItem(self)
	
	def addItem(self,item):
		self.factory.append(item)

	def content(self):
		if len(self.factory) == 0:
			return self.txt
		if len(self.txt):
			st = self.txt + "," + "["
		else:
			st = "["
		for i in self.factory:
			st = st + i.content() + ","	
		return st[:-1] + "]"