sawine@0: grids = {}
sawine@0: 
sawine@0: def createGrid(name):
sawine@0: 	grids[name] = Grid(name)
sawine@0: 
sawine@0: class Cell(object):
sawine@0: 
sawine@0: 	def __init__(self, id, value):
sawine@0: 		self.id = id
sawine@0: 		self.value = value
sawine@0: 
sawine@0: 	def __str__(self):
sawine@0: 		return "(id:%s value:%s)" % (self.id, self.value)
sawine@0: 		
sawine@0: class Grid(object):
sawine@0: 
sawine@0: 	def __init__(self, name):
sawine@0: 		self.name = name
sawine@0: 		self.cells = {}
sawine@0: 		self.observers = []
sawine@0: 			
sawine@0: 	def set(self, cellId, value):		
sawine@0: 		if value and cellId not in self.cells:	
sawine@0: 			self.cells[cellId] = Cell(cellId, value)
sawine@0: 			self.dispatch(Cell(cellId, 0), self.cells[cellId])
sawine@0: 		elif not value and cellId in self.cells:
sawine@0: 			self.dispatch(self.cells[cellId], Cell(cellId, 0))
sawine@0: 			del self.cells[cellId]			
sawine@0: 	
sawine@0: 	def dispatch(self, old, new):
sawine@0: 		for o in self.observers:
sawine@0: 			o[0].sendto("old: %s\nnew: %s\n" % (old, new), o[1])
sawine@0: 
sawine@0: 	def addObserver(self, socket, observer):
sawine@0: 		self.observers.append((socket, observer))
sawine@0: 		
sawine@0: