Using viewlets (and views) in third-party products

[Martin Aspeli]

Wichert Akkerman wrote:

> Perhaps it can more generic. Basically both are instances of a 'only 
> apply X when condition Y is satisfied'. Y in this case is either a 
> specific skin being selected or a product being installed. Would it be 
> possible to have a generic 'only use if feature X is here' framework in 
> place? That could be added to plone.theme instead of creating another 
> package that hooks into the same places as well.

Is that an endorsement for having a generalisation of this in 
plone.theme, and having that included in 3.0.x rather than 3.5?

We need this to be accessible to third party product authors pre-3.5, 
certainly.

We also need this to be dead-simple for third party product authors to 
use, so even if it's generalised, that use case should be supported with 
simple GS syntax or similar.

Finally, we need to be cognizant of performance: this runs on each request.

Martin

-- 
Acquisition is a jealous mistress