I've done various refactorings. What is now checked in is very powerful and
pluggable, but has a simple API.
ObservedCollection.decorate(Collection, Object)
where Object is a listener, handler or other listening type object.
The listeners are more specific too.
Stephen
----- Original Message -----
From: "Stephen Colebourne" <[EMAIL PROTECTED]>
To: "Jakarta Commons Developers List" <[EMAIL PROTECTED]>
Sent: Thursday, August 28, 2003 10:28 PM
Subject: Re: [collections] ObservedCollection checkin
> This one is tough. The internals of the Standard event mechanism currently
> rely on one listener for both. It can also get complicated with a single
> addListener method trying to figure out what has been added. Plus there
are
> the masks to consider.
>
> Merging the two into one made implementation easier. But if the user API
> feels wrong then it could be changed.
>
> Stephen
>
> ----- Original Message -----
> From: "Michael Heuer" <[EMAIL PROTECTED]>
> > What about
> >
> > StandardModificationListener
> > {
> > void modificationOccurred(Evt);
> > }
> > VetoableModificationListener
> > {
> > void modificationOccurring(Evt) throws ModificationVetoedException;
> > }
> >
> > and
> >
> > ObservedCollection
> > {
> > static ObservedCollection decorate(Collection coll,
> > VetoableModificationListener l) {}
> > static ObservedCollection decorate(Collection coll,
> > StandardModificationListener l) {}
> > }
> >
> > instead of
> >
> > StandardModificationListener
> > {
> > void modificationOccurred(Evt);
> > void modificationOccurring(Evt) throws ModificationVetoedException;
> > }
> >
> > and
> >
> > ObservedCollection
> > {
> > static ObservedCollection decorate(Collection coll,
> > StandardModificationListener l) {}
> > static ObservedCollection decoratePostEventsOnly(Collection coll,
> > StandardModificationListener l) {}
> > }
> >
> > ?
> >
> > michael
> >
> > On Thu, 28 Aug 2003, Stephen Colebourne wrote:
> >
> > > First part of ObservedCollection checked in, allowing an event sending
> > > wrapper to be written around a collection.
> > >
> > > TODO:
> > > - Validate that the design is OK
> > > - Implement ObservedList subList
> > > - Test List iterators
> > > - Add Bag, SortedSet, SortedBag implementations
> > > - Add Fast event mechansim
> > > - Add Rich event mechanism
> > >
> > > Stephen
> > >
> > >
> > > ---------------------------------------------------------------------
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> > >
> > >
> >
> >
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>
>
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