Re: [Jython-users] dynamic method idiom

[Jeff E. <je...@ad...>]

Shae Matijs Erisson wrote:

> "rpcee" <rp...@op...> writes:
> 
> 
>>Hello, could someone tell me the standard python idiom for hooking an arbitrary method invocation on a class, I have this that works, just wondered what the proper way was:
>>
> 
> I don't know what the proper way is, but I have this cheesy bit of code as part
> of some button generating code.
> 
> import java
> 
> def getActionListener(method):
>     """this generates a new ActionListener on the fly,
>     and gives it the action you specify
>     specified function/method must have explicit self as first arg"""
>     class subAction(java.awt.event.ActionListener):
>         def actionPerformed(self,e):
>             self.action(e)
>     subAction.action = method
>     subby = subAction()
>     return subby
> 
> 
> def bailOut(self,event):
>     'exits the program'
>     import sys
>     sys.exit()
> 
> # this_button is a JButton created elsewhere in the program
> this_listener = getActionListener(bailOut)
> this_button.addActionListener(this_listener)
> 
> 


I know you are providing an example for rpcee who wants to assign
methods to a class.  But for your purpose, is there a reason why
you don't just use jython's bean property short cut?

def bailOut(event):
   import sys
   sys.exit()
this_button.actionPerformed=bailOut


Jeff Emanuel