Hi,
First I want to thank the Wicket team for this great framework. It is
realy the most simple and still powerful one I know.
I want to create a weather box as a Panel, where the user can select his
town. When the panel is placed on different Pages it should behave like it
was the same instance. Ie if the user selects weather vor Vienna on the
Home page than the panel should also show on the HotelBooking page the
weather of Vienna.
My dream solution would be if I could create the Panel instance in the
Session and reuse the same instance on different Pages. However I think
this is not possible, is it?
My next solution is to declare a shared model holding the selected town.
The app-author using the panel has than to declare it in a custom Session
and give it to each Panel instances on creation. However I am not realy
satisfied with this approach, because it makes the usage of the panel
harder, polutes the Session, the weather panel has to make an unsave cast
of the Session and it IMO breaks encapsulation. The app-author should not
be concerned with how the town is stored and shared between the insances
of the same class.
What I would need is some sort of (private) static session or static
application scoped model holder. Is there something like this in the api?
I was looking for something on Component like
protected Serializable getSharedSessionModel(Class declaringCl)
protected void setSharedSessionModel(Class declaringCl,Serializable model)
where the Class paramter is needed that extending components do not
override the model of the parent.
I think such a thing could be useful for a number of different 'portlets'
like stock-tickers, shopping-baskets, mail-notification voting-boxes etc.
Thanks,
Christian
--
Christian Essl
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