Page Refresh back to same html element

On Jan 1, 2008 3:58 AM, Rajeev Lochan <[hidden email]> wrote:

> For example, I have a long list of items and to view the lower items,
> scrollbar is used. I have some anchors/buttons next to each item. When I
> click on anchor or button, page refreshes and shows the default view (top of
> the list). Again I have to scroll down to make other changes.

Although this isn't exactly what you're asking for, I'd consider
displaying the list in a different way. Above the list you have now,
include the "most recent up-to-three" active items on the list. That
is, a few of the list items would be duplicated at the top of the
page, for the user's convenience. This is not unlike a search engine
returning "most popular results" before the entire list of results.
Would that work for you?

If you do want to scroll down to an item when the page reloads, you'll
need an internal HTML name at that point. You could name each possible
point where you might want to scroll to, but it's probably easier just
to use one label:

   html anchor name: 'START_HERE'.

To redirect the browser to that point, your presenter can implement
the #updateUrl: message; see the Seaside documentation page on "The
Render Tree". This works for me:

   updateUrl: url

       super updateUrl: url.
       url fragment: 'START_HERE'

Good luck with it!

--Tom Phoenix
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>>>>> "Rajeev" == Rajeev Lochan <[hidden email]> writes:

Rajeev> I tried this and it works out of the box only with a particular predefined
Rajeev> Anchor. As I mentioned above, mine is going to be Dynamically built list
Rajeev> with a lot of items. Is there anyway to assign unique name to all anchors.
Rajeev> One of the solutions I can think of is

Rajeev> html anchor name: html nextId asString.

Rajeev> Then somehow pass this information to #updateUrl:

Just designing out loud, but I suspect your callback could update a state
variable (in the component) that defines the anchor tag to which to scroll,
and the #updateUrl: of that component would add that tag to the url.  Might
just work, since the callback pass is processed *before* the rendering pass.

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