[Pydispatcher-devel] Re: [wxPython-users] pubsub.py issues?

[Mike C. F. <mcf...@ro...>]

Schoenborn, Oliver wrote:
...

>When
>the user changes something in the view, say data in a text control box, the
>view commits the data to a leaf in the hierarchy of the document and
>generates a message for '(doc, changed, fromView)' topic, in case 'someone'
>is interested in the fact that document has been changed. Similarly, the
>import reader generates a message for topic '(doc, changed, fromImport)'
>when it imports some external data into some leaves of an existing document.
>  
>
Okay, so the approach I outlined should work with PyDispatcher.  I'll 
put it on the (seemingly infinitely long) list of things to play with 
some day.  Basically it would look something like this:

def sendHier( signal=Any, sender=Anonymous, *arguments, **named ):
    if isinstance( signal, HierMessage ):
       responses = []
       while signal:
          responses.extend(sendExact( signal, sender, *arguments, **named ))
          signal = signal[:-1]
       responses.extend( sendExact( Any, sender, *arguments, **named ))
       return responses
    else:
       return send( signal, sender, *arguments, **named )

I'd have to take some time to write up test cases and check that the 
last sendExact would do the proper thing, but I think that basically 
gives all the features you've described.

Have fun,
Mike

_______________________________________
  Mike C. Fletcher
  Designer, VR Plumber, Coder
  http://members.rogers.com/mcfletch/