Re: Enhancement to converters?

Wolf Paulus wrote:
> A possible solution to this problem would be to elevate delegates from 
> attributes to tags. To give an example:
> Instead of
> 
> <list id="alist" cellrenderer="com.mydomain.MyCellRenderer"/>
> 
> a nested tag would be used:
> 
> <list id="alist">
>     <mycellrenderer>
> </list>

Hello Wolf,

this sounds like a very good idea to me. To be able to re-use the 
renderers by specifying an (ref)id solves a problem my approach did not 
have a solution for. (without introducing a rather awful syntax)

I'm able to work on swixml again next weekend, perhaps a couple of hours 
during this week.

Frank

> 
> Since renders are often re-used, the already know refid attribute could 
> help to define this case:
> 
> <list id="alist">
>     <mycellrenderer id="renderer123"/>
> </list>
> 
> <list id="alist">
>     <mycellrenderer refid="renderer123"/>
> </list>
> 
> Elevating delegates to tag would also allow to initialize it since we 
> could provide the full parser support, allowing to use setter and the 
> initclass attribute as well.
> 
> Since we probably don't want to allow to instantiate every class know to 
> the system, delegates would have to be registered (like tags and 
> converters are being registered.) A simple map could take care of this. 
> This would also allow for not having to flag a delegate tag.
> If a tag is found registered it's representing class is instantiated and 
> added into the parent - else we would try to find it in the delegate map.
> If found, we instantiate it, set it up and try to find a setter in the 
> parent.
> 
> Wolf
> 
> 
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> 
> 


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