Do you add the state ddc to the ajax target when you get a ajax country event?
----- Original message -----
>
> Sven,
>
> Thanks for your input. It seems that you do not understand the problem I have
> (Wicket problem??? or my page problem???). I know how Ajax works by adding
> components to Ajax request target.
>
> When it is non-Ajax, my page runs correctly with all three controls. When
> Country DDC Ajax-controls State DDC, the two DDC works correctly. The problem
> is
> that once this Ajax control is triggered by selecting a value in Country DDC,
> the State DDC list is NOT updated when the Locale DDC value is changed.
>
> I have a feel that Wicket has a problem here. I am using Wicket 1.4.7.
>
> Regards.
> -David
>
>
>
> --- On Sun, 3/21/10, Sven Meier <[email protected]> wrote:
>
> > From: Sven Meier <[email protected]>
> > Subject: Re: Ajax has too much control?
> > To: [email protected]
> > Date: Sunday, March 21, 2010, 7:25 AM
> > Hi David,
> >
> > DropDownChoice#wantOnSelectionChangedNotifications() will
> > trigger
> > rendering of the complete page.
> > On Ajax request only those components are rendered you
> > explicitely 'add'
> > to the request, see AjaxRequestTarget#addComponent().
> >
> > If you want to have the same for Ajax requests, you can
> > just 'add' the
> > complete page.
> >
> > This is not very efficient though.
> >
> > Sven
> >
> > David Chang wrote:
> > > Forgive me about this meaningless subject, but I
> > cannot think of a better one.
> > >
> > > I have been learning Wicket through the WIA book. I
> > just found out something interesting to me. Not sure it is a
> > bug, design, or something I did wrong.
> > >
> > > I have a page with three Wicket elements:
> > >
> > > 1. Locale selector through a DropDownChoice list. WIA
> > has complete code about how this works and I copied the
> > solution into this page
> > >
> > > 2. Country DropDownChoice, whose values change between
> > English and Chinese depending on Locale DDC.
> > >
> > > 3. State DropDownChoice, whose values change between
> > English and Chinese depending on Locale DDC. The values in
> > this DDC depends on the chosen value in Country DDC.
> > >
> > > Here are the experiments
> > >
> > > Experiment#1.
> > >
> > > Country DDC does not control values in State DDC via
> > Ajax and it has
> > >
> > > protected boolean
> > wantOnSelectionChangedNotifications() {
> > > return true;
> > > }
> > >
> > > Everything works like a charm, which means
> > >
> > > (1) when Country DDC value changes, State DDC changes
> > accodingly.
> > > (2) when Locale changes, both Country DDC and State
> > DDC lists change display values accordingly (which means
> > both DDCs show a list of values in the same language).
> > >
> > > Experiment#2.
> > >
> > > Country DDC controls values in State DDC via Ajax. In
> > this case, when page is first loaded, I do not touch the
> > Country DDC or State DDC. I simply change locale value any
> > number of times, both Country DDC and State DDC lists change
> > correctly depending on the session locale. Here is the
> > strange thing. Then I change Country DDC value, State DDC
> > changes correctly. Since then, HOWEVER, if I change locale
> > values, ONLY Country DDC list changes correctly; State DDC
> > list is not updated. It seems Wicket decides that State DDC
> > is forever Aja-controlled by Country DDC only.
> > >
> > > Not qure sure if this a bug, design, or I did
> > something wrong.
> > >
> > > Please let me if you have difficulty understanding the
> > experiments.
> > >
> > > Thanks for any info or help.
> > >
> > > Cheers!
> > >
> > >
> > >
> > >
> > >
> > >
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> > >
> > >
> > >
> >
> >
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>
>
>
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