Johan Compagner wrote:
> no not really
> 
> look at AbstractAjaxBehavior
> 
> that has 3 methods:
> 
> public final void renderHead(final Response response) (of the interface)
> that calls 2 methods:
> 
> protected void onRenderHeadInitContribution(final Response response)
> protected void onRenderHeadContribution(final Response response)

Well, maybe I'm wrong, but if the header contribution works as we agreed 
it should, do we need those two? What's the additional value?

> 
> 
> what the difference is between those 2, i dont know
> first is only called once
> but the second all the time.
> So guess for us the first is what we try to implement.
> But i don't know where the second is then exactly used for.
> (if that one can add things to the header no matter how many times the 
> behaviour is there on the page)
> 
> johan
> 
> 
> 
> 
>     So far I agree, except that
>     protected void onRenderHeadInitContribution(final IHeaderResponse
>     response)
>     should read renderHead(final IHeaderResponse response), shouldn't it?
>     (method from IHeaderContributor)
> 
>     So... erm... who's going to... erm... implement this?
> 
>     -Matej
> 
>      > Much nicer if you ask me and for developers that are coding these
>     header
>      > contributors
>      > it is much more self explaining. You dont need to know about a vague
>      > class with some static methods
>      > that you should call instead of directly the response.write()
>      >
>      > But maybe i am missing something right now that i am not seeing
>     at this
>      > late hour ...
>      >
>      > Johan
>      >
>      >
>      > On 8/9/06, *Matej Knopp* <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
>     <mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>> wrote:
>      >
>      >     On ##wicket we came to a conclusion that we need to unify and
>     simplify
>      >     the way duplicated header contributions are filtered. We want
>     to make it
>      >     as simple as possible, but yet powerful enough to be able to
>     handle
>      >     non-trivial usecases.
>      >
>      >     The current draft looks like this:
>      >
>      >     public class HeaderContribution
>      >     {
>      >             static public void
>      >     renderJavascriptReference(PackageResourceReference
>      >     reference, Response response);
>      >
>      >             static public void
>     renderCSSReference(PackageResourceReference
>      >     reference, Response response);
>      >
>      >             static public void renderString(String string, Response
>      >     response);
>      >
>      >             static public void markRendered(Object object);
>      >
>      >             static public boolean wasRendered(Object object);
>      >
>      >             static public void detach();
>      >     }
>      >
>      >     The usage should be like this:
>      >
>      >     class MyBehavior extends AbstractBehavior
>      >
>      >           private static PackageResourceReference myJavascript = ...;
>      >
>      >           private static PackageResourceReference myCSS = ...;
>      >
>      >           protected void renderHead(Response resp) {
>      >              HeaderContribution.renderJavascriptReference(myJavascript,
>      >     response);
>      >              HeaderContribution.rednerCSSReference (myCss, response);
>      >           }
>      >
>      >           ...
>      >     }
>      >
>      >     Where HeaderContribution would take care of filtering duplicate
>      >     contributions (using a Threadlocal containing a set of already
>      >     contributed objects).
>      >
>      >     Thoughs?
>      >
>      >     -Matej
>      >
>      >    
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