def act_operations(self, ops, reverse=False):
t = operation.transform(reverse)
for op in ops:
if t[op.__class__] == operation.Addition:
self.add_prop(op.property)
if t[op.__class__] == operation.Removal:
self.del_prop(op.property)
def draw_operations(self, ops, reverse=False):
t = operation.transform(reverse)
for op in ops:
print op
if t[op.__class__] == operation.Removal:
dprop = self.props_drawn.pop(op.property)
dprop.allgroup.remove()
elif t[op.__class__] == operation.Addition:
p = op.property.place
prop = op.property
self.draw_property(prop, p)
