Brill, This is actually an API "best practice". Classes fall into two categories: ones designed for subclassing, and ones designed to be final. The same goes for methods. Swing is full of examples of what goes wrong when people override methods in classes that haven't been designed with subclassing in mind.
Gili Brill Pappin wrote: > > on removing the finals > > The final members are the worst thing I've had to deal with in Wicket > so far. > Although I understand that there may be a reason for them, they are > more a hinderance than anything else and seem to be trying to "protect > users from themselves". > > - Brill Pappin > > > On 12-Jun-08, at 1:03 AM, cowwoc wrote: > >> >> >> Have you considered moving from subclassing to composition in Wicket >> using >> Callable<T>? >> >> Currently it is quite common for developers to subclass a component >> in order >> to override isVisible() and other properties. I am proposing that >> instead >> the component classes become final and properties may only be set >> using >> setter methods. The setter methods would take Callable<T> instead of >> T, so >> for example setVisible(boolean) would become >> setVisible(Callable<Boolean>) >> >> The benefit of this approach is that you could introduce static >> factory >> methods to the Wicket components which would make them much easier >> to use in >> their Generic form. You could then introduce various helper classes to >> create Callable<T> for constant values, such as >> Callable.valueOf(true) would >> return a Callable<Boolean> that always returns true. >> -- >> View this message in context: >> http://www.nabble.com/users%2C-please-give-us-your-opinion%3A-what-is-your-take-on-generics-with-Wicket-tp17589984p17792488.html >> Sent from the Wicket - User mailing list archive at Nabble.com. >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [EMAIL PROTECTED] >> For additional commands, e-mail: [EMAIL PROTECTED] >> > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > -- View this message in context: http://www.nabble.com/users%2C-please-give-us-your-opinion%3A-what-is-your-take-on-generics-with-Wicket-tp17589984p17800710.html Sent from the Wicket - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
