Re: MVP - model question

A Curse ! ^^
Do you mean you want to share a model between multiple presenters ?
That's the not the "MVP described by Ray Ryan" way of doing things. A
presenter shoul
d be able to get a model object in two ways only :
- RPC call
- being passed an event by the EventBus
Maybe your models are too big, or your presenters too small.

Anyway, if I wanted to do something like this (god preserve me), I'd
go with a Ginjected @Singleton model object. Or else, a model object
that listens to the Presenters via the EventBus to know when it needs
to update or send itself to the server.

On 22 sep, 16:44, mike b <mbaker.t...@gmail.com> wrote:
> The Google's Contacts example is nice for showing events, history, and
> the MVP pattern, but too simplistic to really show complex models.
>
> I have a situation where I would like to use the same model object
> between several presenters. Also note that this model object is
> created on the client side and passed to the server later.  It will
> never be retrieved from the server.
>
> What is the best way to accomplish this?
>
> I was thinking that I could use the AppController event framework
> (onChangeValue) to handle creation/passing the model to the different
> presenters.
>
> Something like this...
>
> public void onValueChange(ValueChangeEvent<String> event) {
> ....
> ....
>        MyExampleObject eo = new MyExampleObject();
>
>       if (token.equals("list")) {
>         presenter = new ContactsPresenter(rpcService, eventBus, new
> ContactsView(),eo   );
>       }      else if (token.equals("add")) {
>         presenter = new EditContactPresenter(rpcService, eventBus, new
> EditContactView(), eo);
>       }
> ....
> ....
>
> Thoughts? Ideas? Curses?
>
> Regards,
> Mike

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