Re: Selecting list items from history actions using Activities and Places

I've knocked up a quick example of what I was meaning, I think it
works for all the cases you described. I'd be interested in how your
app is different -

https://github.com/chrisprice/menubodyexample/blob/master/src/com/scottlogic/cprice/menubodyexample/client/menu/Menu.java

(n.b. the instanceof and string equality code is a dirty hack!)

On Wed, Feb 29, 2012 at 8:51 PM, Shaun Tarves <shaun@tarves.net> wrote:
> It does, but this is a differrent issue. The selectionmodel needs to be
> notified of selection somehow if the user isn't selecting with mouse or
> keyboard.
>
> My problem is when the user navigates to a state in the app where an item
> should appear to be selected  - directly via a URL (as supported by
> activities/places) or using back/forward buttons - rather than by clicking.
>
> For example, I click an Item in the CellList, the onSelection change handler
> fires an event to go to a new place. The Item appears selected...all is
> good. However, when the user clicks the back button, for example, I now need
> to select a DIFFERENT item in that CellList to represent the last place they
> were on. The history manager fires some placeChangeEvent that I can listen
> for. So I attach a handler to that PlaceChangeEvent that tells the list to
> select and item.
>
> The problem is that the selection handler, upon being told to select the
> item representing where I actually am, will AGAIN fire the event to go to a
> new place (as it should). Now, I've got a bad loop.
>
> I hope that makes the problem clearer. I can't wrap my head around how to
> make this work.
>
> - Shaun
>
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