Re: [Jython-users] Explicitly creating listeners from callables

[Kevin B. <kb...@ca...>]

Samuele Pedroni wrote:
>
> def adapt(listenerClass, **bindings):
>    global _adapt_u
>    _adapt_u +=1
>    return new.classobj("_%s" % _adapt_u,( listenerClass,),bindings)()

[snip] 

> >>> b=JButton("Ok",actionListener=adapt(ActionListener,actionPerformed=doIt))

I like it. :-) 

Could we even go one step further, and make the __init__ method for a Java Interface
be something very like 'adapt'?  (The current __init__ behavior (throw TypeError) is not generally useful.)

This would allow a nicer syntax:

>>> b=JButton("Ok",actionListener=ActionListener( actionPerformed=doIt ))

And would facilitate anonymous classes for other non-Event uses (which I've wanted before, but
can't think of examples right now!)

kb