[Zope3-dev] Re: Content provider API

[Roger Ineichen]

Hi Jim  

> -----Original Message-----
> From: zope3-dev-bounces+dev=projekt01.ch at zope.org 
> [mailto:zope3-dev-bounces+dev=projekt01.ch at zope.org] On 
> Behalf Of Jim Fulton
> Sent: Sunday, September 25, 2005 12:47 PM
> To: dev at projekt01.ch
> Cc: zope3-dev at zope.org; 'Stephan Richter'
> Subject: [Zope3-dev] Re: Content provider API
> 
> Roger Ineichen wrote:
> > Hi together
> > 
> > I added a proposal where is important for the CPSSkin work and the
> > zope.app.viewlet implementation.
> > Can you take a look at it and tell me what do you think about.
> > 
> > I hope it will be possible to implement a generic lookup concept
> > in page templates where we can use for CPSSkin or the viewlet
> > implementation form Stephan. 
> > 
> > I have some need for such a base API in the Tiks framework and
> > plan to implement this at the Neckar sprint if possible.
> > 
> > Proposal
> > 
> http://www.zope.org/Wikis/DevSite/Projects/ComponentArchitectu
> re/ContentProv
> > iderAPIForSkins
> 
> I find this proposal a bit light on motivation.

I think it's important to have such a API. Otherwise we get
imcompatible 'additional content provider' implementations.

> What is a content provider and why do you need one?

A content provider is a comonent where knows about additional
content where should get rendered into a [1]region of the page template.
Additional content is a 'html fragment'. Right now there is a 
vielwet implementation in zope.app.viewlet and before was a 
pagelet implementation which can be defined as 'additional content'.

[1]Regions are implemented in the zope.app.viewlet.interface right now.
But I guess a region should be able to collect more then only viewlets.
The same pattern could be used for JSR 168 like portlet implementations. 

Regards
Roger Ineichen

> Jim
> 
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