Re: [Adobe-source-devel] View concept singleton state

[Foster T. B. <fbr...@ad...>]

Hi Mat,

On Oct 17, 2006, at 10:39p, Mat Marcus wrote:

> Hi Foster,
>
> I think you already know my views on this, but I'll repeat them =20
> given that you initiated the wider discussion. First off, when I =20
> suggested that we might make use of the notion of a special state, =20
> the term that I used was "singular", not "singleton". As others =20
> pointed out, the two terms are not interchangeable.

This was my mistake -- I stand corrected.

> At first I was considering adding a hook to any_view providers a =20
> chance to install a "wrong type" handler. But I soon began to sort =20
> my ideas out, and I set this aside when Sean said he would consider =20=

> adding type constraints to the model. I never intended for protocol =20=

> relating to singular to live in any_view. I sketched my reasons =20
> after I noticed that you had added such code to any_view, (before =20
> asking you to remove it). I explained my resistance in a bit more =20
> detail, offering a rationale similar to the one Sean gave above, =20
> after noticing that you added it back to any_view again (before =20
> asking you to remove it a second time). Can you say more about why =20
> you keep aiming to get singular protocol into any_view, especially =20
> in a world where, say, types could be checked in the model and the =20
> concrete view can choose as specific or as general a =20
> view_model_type as they wish?

Originally I didn't think the issue was settled, that there was a =20
viable example for when the model would have information in a cell =20
that an attached view would not be able to handle. After having this =20
discussion, though, I'm convinced there is no place for the singular =20
notion in the view concept.

Blessings,
Foster


--
Foster T. Brereton              <=E1=BC=B0=CF=87=CE=B8=CF=8D=CF=82><     =
         Romans =20
3:21-26
A d o b e   S o f t w a r e   T e c h n o l o g y   L a b
"What 99 percent of programmers need to know is not how to build =20
components but how to use them." -- Alexander Stepanov
"Now we have very simple code and the meaning is perfectly clear. =20
Drink the Kool-Aid" -- Sean Parent