You should not set a list directly on your dropdown but load it using
for example a loadabledetachable model, that way your getCountriesList
method is executed every time the component is rendered.
Maurice
On Wed, Apr 2, 2008 at 10:12 AM, Sergey Podatelev
<[EMAIL PROTECTED]> wrote:
> Thanks for quick reply, Nino.
>
> No, I'm not using ajax so far.
>
> Let me describe a bit more: there's a registration page, which has a
> RegisterForm. Also, the page has an OptionsPanel unrelated to the
> RegisterForm with a language selector DDC. That DDC is bound to Session's
> "language" property via PropertyModel. What I want is to reorder items in
> RegisterForm's DDCs.
>
> I've actually implemented it this way (list of countries is one of the lists
> that must be reordered):
>
> OptionsPanel:
>
> add(new DDC(...) {
> onSelectionChanged() {
> ...
> ((BasePage) getPage()).notifyLanguageSwitch();
> }
> });
>
>
> RegisterPage:
>
> RegisterPage extends BasePage {
>
> init() {
> ...
> processLocaleSpecificComponents();
> ...
> }
>
> notifyLanguageSwitch() {
> processLocaleSpecificComponents();
> }
>
> processLocaleSpecificComponents() {
>
> Component countriesChoice = get("countryChoice");
>
> DDC newCountriesChoice = new DDC("countryChoice",
> getCountriesList(getLanguageId()), new ChoiceRenderer(...));
>
> if (countriesChoice != null) {
> countriesChoice.replaceWith(newCountriesChoice);
> } else {
> add(countriesChoice);
> }
> }
> }
>
> But you're saying, I don't have to reconstruct components. How can I control
> order of items in the DDC then? Even though data is provided dynamically,
> like this:
>
> add(new DropDownChoice("countryChoice", getCountriesList(getLanguageId()),
> new ChoiceRenderer("name", "id"));
>
> the getCountriesList() method isn't called when page is reloaded to switch
> language.
>
>
>
> On Wed, Apr 2, 2008 at 11:14 AM, Nino Saturnino Martinez Vazquez Wael <
> [EMAIL PROTECTED]> wrote:
>
> you could use call modelchanged on the forms model. Or make the components
> > take an ajaxrequesttarget, depending if youre using ajax?
> >
> > You should'nt have to reconstruct them. But that depends if youre using
> > models or not etc..
> >
>
>
> > The problem is, when user changes language via selector, all dropdown
> > > lists
> > > must be reordered to keep being alphabetically sorted.
> > >
> > > I guess I have to re-construct my DropDownChoice components for this,
> > > but
> > > I'm not sure how to notify the page of the language change event. Can I
> > > somehow make the form on the registration page listen to an unrelated
> > > component's onChange event?
> > >
> >
> --
> sp
>
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