Hi Eduardo:
Comments inline.
On 01/20/2010 09:34 AM, Eduardo Nunes wrote:
> I'm using a different approach, below a draft source code of my
> AppController class. What do you think?
>
> public class AppController implements ValueChangeHandler<String> {
>
> private final Map<String, PresenterType> urls;
> private final Map<PresenterType, Provider<? extends Presenter>> presenters;
>
> @Inject
> public AppController() {
>
> urls = new TreeMap<String, PresenterType>();
Could you expand a bit on why the choice of TreeMap vs. another HashMap?
> presenters = new HashMap<PresenterType, Provider<? extends Presenter>>();
>
> urls.put("/contacts/list", PresenterType.CONTACT_LIST);
>
> History.addValueChangeHandler(this);
>
> }
>
> @Override
> public void onValueChange(ValueChangeEvent<String> event) {
>
> final PresenterType presenterType = urls.get(event.getValue());
>
> if (presenterType != null) {
>
> final Provider<? extends Presenter> presenter = presenters
> .get(presenterType);
Is there a way to do this asynchronously at startup? I'm interested in
the shortest response time during event handling.
>
> final Presenter<? extends Display> instance = presenter.get();
> instance.bind();
Ibid.
>
> RootPanel.get().add(instance.getDisplay().asWidget());
>
> }
>
> }
>
> @Inject
> void configureContactListPresenter(Provider<ContactListPresenter>
> presenter) {
> presenters.put(PresenterType.CONTACT_LIST, presenter);
Ibid. I don't understand why the get() can't be done here (i.e.
asynchronously at startup)
Thanks for the examples!
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