Re: [gnome-db] Caching list view/-model ?

On Tue, 2003-07-22 at 19:19, Peter Schulte-Stracke wrote:
> Hi,
> I am in desparate need of a List/Tree widget that does *not* read the whole
> database / model, but only a portion of it, essentially what is displayed.
> This looks as an innocuous enough requirement, but I failed completely to
> get anything to work, or even to find a model implementation.
> The libgnomedb appears to contain something in this direction, however
> a.t.m. I am still searching for it :-)
> As far as I can tell, the gtk list/treeview code just loops over the the
> whole list -- it does not look as if I could use it, but it appears as if
> *you* are just doing it!  Perhaps I am misunderstanding something.
> Anyway, what I want should not be that uncommon a requirement, because it
> is not uncommon to have large databases, and expensive per item processing.
> A minimum would be to disconnect the scrollbar from the listview, so that
> one could reflect the position in a data base of, say, 10000 records in
> the scrollbar, but only display the first twenty records, say, at the
> beginning.  Has anyone ever tried this?
one way I've been thinking for doing this is to use the GnomeDbForm's
list mode to display a number of rows at a time. Then, you could
navigate to the next 10 and so on.

Doing that in the grid widget seems a bit more difficult, although it
might be possible.


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