Source Code for Module reflectometry.model1d.profileview.listener

 1  # ================ Generic listener ================= 
 2  # TODO: shouldn't we be using Traits? 
 3   
 4 -class Listener: 
 5 -    def __init__(self): 
 6          self.connection = {} 
 7   
 8 -    def connect(self,trigger,value,callback): 
 9          key = (trigger,value) 
10          if key in self.connection: 
11              self.connection[key].append(callback) 
12          else: 
13              self.connection[key] = [callback] 
14   
15 -    def disconnect(self,trigger,value,callback): 
16          key = (trigger,value) 
17          if key in self.connection and callback in self.connection[key]: 
18              self.connection[key].remove(callback) 
19   
20 -    def signal(self,trigger,value,**kw): 
21          key = (trigger,value) 
22          if key in self.connection: 
23              for c in self.connection[key]: c(trigger,value,**kw) 
24