[REBOL] Re: Version 0.1 of a grid style
From: petr:krenzelok:trz:cz at: 28-Mar-2002 12:40
Brett Handley wrote:
>Hi Gregg,
>
Hi all,
I will try separate route, or we can cooperate. I think cell = face is
not bad aproach, if you want to have "full control", or if you think of
various handlers. Imagine coloring upon some condition, or maybe even
pluggable face feel function according to some condition. That way you
could create really powerfull combinations ...
As for scrolling - it is not needed imo. Take the top-most pane
coordinates as the cropping element. Grid doesn't need to scroll, at
least vertically. It is data, which are changing, not cells themselves.
Just imagine one bigger data matrix, and your visible grid area is only
kind of a subface/magnifier, looking at the underlying cache. So - if
someone hits arrow key down/up, page up/down, you go to cache to see if
you hava data, if not, you call your handler for refilling the cache
from data source.
I know the aproach is a little bit complicated, but imo the only way of
how to create really powerfull grid, able to browse thru tens of
thousands of records. I don't want to see another "toy", which blowns up
on browsing thousands of rebol block based database ... I want separate
data handling layer/api, with ability to hook into SQL or other data
sources ...
The grid we use here at work is really cool, but it organises data in
columnar data arrays = rebol blocks. I don't like it too much. It is
that way to have easier handling of column addition/deletion,
drag&dropping, and to easily calculate automatic columns width (pixels)
adjustment element, according to the longest text (we can't do it in
rebol anyway ...). But that's only the question of appropriate
set-of-blocks traversing functions ...
well, but that's me, my opinions, my requirements :-) Your grid is very
inspiring anyway, and I can't promise anything, as I am currently
overloaded with tons of work ....
Cheers,
-pekr-
