/addons/EventDelegate.py

 1from __pyjamas__ import JS
 2
 3class EventDelegate:
 4   """
 5      Create the equivalent of a bound method.  This also prepends extra 
 6      args, if any, to the called method's argument list when it calls it.
 7      
 8      Pass the method name you want to implement (javascript doesn't
 9      support callables).
10      
11      @type args: list
12      @param args: If given, the arguments will be prepended to the 
13                   arguments passed to the event callback
14   """
15   def __init__(self, eventMethodName, obj, method, *args):      
16      self.obj = obj
17      self.method = method
18      self.args = args
19      JS("this[eventMethodName] = this.onEvent;")
20
21   def onEvent(self, *args):
22      self.method.apply(self.obj, self.args.l.concat(args.l))
23