Sorry Jeffry,

Disagree with you there. Spark is far from perfect but as someone who also 
develops components every day I much prefer to problems of Spark over the 
lets-do-everything-through-inheritance mx world.

Mike


-----Original Message-----
From: Jeffry Houser [mailto:jef...@dot-com-it.com]
Sent: Sunday, January 15, 2012 3:55 PM
To: flex-dev@incubator.apache.org
Subject: Re: Overly large classes (was Flex incubation on Apache as Opensource)

On 1/15/2012 4:01 PM, David Arno wrote:
> I'll
> comment on List.
>
> The class does many things: it's a container; it displays the contents
> of a data provider; it supports scrolling; it supports item renderers;
> it supports dragging&  dropping; it supports single selections; it
> supports multiple selections; it supports item editing etc. Classes
> should be single purpose. Therefore the List class should be a
> compositional class that is composed of IDataProviderSupport,
> IScrollSupport, IDragAndDropSupport etc and the functionality that is
> currently in List should be in classes that implement those
> interfaces. That way, the currently overly-large, over-complex,
> unfocused class could be broken up into a large number of properly focused, 
> smaller classes.

  That is kind of what the Spark Architecture did.  And the end result is that 
development is more complicated to extending and modifying things [from the 
perspective of a component developer] is a complete nightmare.  It's much worse 
than the "too many private variables"
problem that existed in the Halo architecture.

  For the sake of simplicity in development; wouldn't the MX approach of having 
a single class to represent the List be better?

  In my view Spark favored flexibility over simplicity.

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