[Seaside] #onScroll: with positions

[Dennis Schetinin]

> >  We would like to implement a GoogleReader-like table component which
>  >  loads additional data to the table while scrolling down to (or near)
>  >  the bottom. We tried #onScroll: event but it does not include position
>  >  parameters for scroller. The possible decision is to implement a
>  >  client-side script posting those parameters, but we are not sure how
>  >  to do it in practice.
>
>
> Note that onScroll: is not a standard event, so most certainly it
>  won't work on all browsers. Never the less, you can try something like
>  the following:
>
>     html div id: 'info'.
>     self session addLoadScript: (html scriptaculous event
>         observe: html scriptaculous window
>         on: 'scroll' do: (html updater
>             id: 'info';
>             callback: [ :v | x := v ] value: (html scriptaculous
>  window access: 'scrollX');
>             callback: [ :v | y := v ] value: (html scriptaculous
>  window access: 'scrollY');
>             callback: [ :r | r render: x , ' x ' , y ])).
>

Thank you.

We found this decision:

(html div)
		...
		onScroll: (html request callback: [:val | self halt]
					value: (SUStream on: 'this.scrollTop'));
                ...

Does it have many drawbacks?

-- 
Dennis Schetinin