Hi again,
For the record, custom events need to be namespaced ('foo:changed',
not 'changed').
The way you handle namespacing is entirely up to you. It can be
instance based, class based or arbitrary.
It just needs to be provided by the class / instance itself, and the
Observable mixin has to take it into account.
Best,
Tobie
On Oct 7, 9:50 am, Jim Higson <j...@wikizzle.org> wrote:
> In another thread I wrote:
>
> > The biggest problem with events at the moment is only Elements can fire
> > them. This makes MVC difficult because the Model (javascript objects) not
> > the view (HTML elements) would ideally fire the events.
>
> > For Prototype2, maybe there should be an observable mixin. When mixed in,
> > any object can fire events.
>
> To which Toby replied:
>
> > This is already possible with our current event system using the
> > `document` object as broker.
>
> > Please see a basic, untested implementation here:
>
> >http://gist.github.com/203193
>
> The implementation linked here is good, but isn't there a problem with:
>
> //Foo mixes in Observable
> var a = new Foo();
> var b = new Foo();
>
> a.observe( 'change', function(){alert( 'a changed' )};
> b.observe( 'change', function(){alert( 'b changed' )};
>
> a.fire('change');
>
> // both listeners are now notified even though only object a fired.
>
> One fix might be to do:
>
> line22:
> document.fire( this.somethingUnique + eventName, data);
>
> line 26:
> document.observe( this.somethingUnique + eventName, callback);
>
> But I don't know where the somethingUnique would come from.
>
> Jim
>
> --
> Jim
> my wiki ajaxification thing:http://wikizzle.org
> my blog:http://jimhigson.blogspot.com/
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