[Zope3-dev] Re: Event fixes

[Florent Guillaume]

Stephan Richter wrote:
> On Thursday 24 November 2005 07:13, Florent Guillaume wrote:
> 
>>I'd like to do a few simple fixes to events in Zope 3.2 before it's
>>too late:
>>
>>- Add the source to IObjectCopiedEvent, per
>>http://www.zope.org/Collectors/Zope3-dev/478
>>I believe I received a +1 on this
>>
>>- Make OrderedContainer.updateOrder send an IObjectModifiedEvent.
>>Today when you change the order no event at all is fired, this is wrong.
> 
> 
> Eek, +1 definitely.
> 
> 
>>- Finally I'd like to make all containers send a specific subclass
>>instead of just an IObjectModifiedEvent (I propose naming it
>>IContainerModifiedEvent), because it makes it possible to isolate
>>change to an object that only affect the 'containment' aspect of it.
>>Subscribers can then have specific optimizations, for instance a
>>catalog would want to isolate this because it only affects
>>containment boundaries and not the "content" of the object. (This is
>>a concrete use case BTW, in CPS's event model we have this
>>distinction and it's useful.)
> 
> 
> +1.
> 
> 
>>This shouldn't affect existing subscribers at all, because they'd be
>>subscribing to IObjectModifiedEvent and this would still match.
> 
> 
> Exactely. 
> 
> 
>>Please give me your opinion on this quickly, unless you're too busy
>>flaming :)
> 
> 
> So, +1 for the proposal.

I've checked in all that.

I didn't follow Dominik's suggestion of using IModificationDescription 
because I feel this a case sufficiently fundamental that we really want a 
subclass.

Florent

-- 
Florent Guillaume, Nuxeo (Paris, France)   CTO, Director of R&D
+33 1 40 33 71 59   http://nuxeo.com   fg at nuxeo.com