Hi,
I am quite a new Wicket user and have to agree with Igor. I found ListView
always a bit 'magical' confusing. I do not realy understand wheter I've to
keep my list (indexed) stable between calls and in case of DB backed lists
how to do that. If I want to provide a custom model which methods of list
are used etc. Do I even have to store my list in session etc.
In the end it took me quite some time that there is a method on ListView
to overwride. Still it seems quite unatural to first provide a model and
than to change the component just to adjust the provided model.
Further it is most often more easy to provide a model from a list than a
list from a model. List is a 20+ method interface, which is in case you do
not know AbstractList or want to provide something more performent no way
easy to implement. (After you got the concept of models Swing with
ListView is realy easy).
To me Igors proposal is much more clear. It states clearly what ListView
needs - or better does not need. It doesn't need an extend, where I always
think twice if I do not know the superclass very well and it it is easy to
implement. Writing a wrapper around a real List is very easy if it is not
already provided from the framework.
Just my new user thougts,
Christian
On Mon, 25 Jul 2005 08:57:14 -0700, Igor Vaynberg <[EMAIL PROTECTED]>
wrote:
> As opposed to IModel getListItemModel(final IModel listViewModel,
> final int
> index) ?
> What exactly does index mean in a context of a database
backed list?
> What kind of a model does listViewModel represent?
>
Ok didn't know you would use that method to get a listitem model.
But this you already can make on youre own that's no problem at all.
Just subclass ListView once and make youre own IModel
definition/implementation for that ListView And youre IModel
definition has that getListItemModel() method override the
getListItemModel() of listview. Cast to youre Model and call it.
You are right I can do that no problem.
What I was trying to achieve in all these discussions is to create a
simpler/standard/non-list-dependent/more user-aware way to do this
because I
thought other people would have the same problem and thus would need a
similar solution. However, since no one chimed in on this, I guess I am
alone. So, maybe, the best solution is for me to roll my own version of
listview that works how I want it to and leave the framework default as
it
is since it looks like it works for most people.
Igor
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