On 15 Jan 2012, at 22:23, David Arno wrote:
Tink, Jeffry,
Maybe I've got confused, but I was describing spark.components.List,
which I
assume is a spark component. This class might be less monolithic
than the
halo version, but it is ridiculous to claim it implements composition.
Take for example scrolling. In true composition, there would be a
reference
to a scroll handler into which salient data would be injected and
that would
be pretty much it. List though, has a scroller variable (of class type
Scroller), which handles some aspects of scrolling, but there are
still lots
and lots of lines of code, many deeply embedded inside long, complex,
methods of List, that handle some aspects of scrolling. This isn't
composition, it's just a messy bodge to enable support for spark
skinning.
Fair point on editing though. That was a mistake on my part.
David.
List exposes 2 styles, and 2 properties that is passes onto the
Scroller instance.
There is also a small amount of code the make sure the selected index
or carat is visible (as a Scroller doesn't have any logic for selected
items).
Tink
