List for Users of Carlsbad Cubes' Technologies and Products
<Forum@carlsbadcubes.com> schrieb am 01.03.05 23:10:22:
>
> >Sorry if this is clumsy but why don't implement the actions in your
> >wizard base (the usual, public action-way)? Just call a function
> >(abstract or default implementation) which is the overiden by your
> >wizared-enabled classes? You may then have/use your getters just through
> >some kind of delegation to these public actions...
> >
> >
> >Frank
>
> hey that's what i ended up doing, and it's quite clean..
>
> public Action aContinue = new AbstractAction() {
> public void actionPerformed(java.awt.event.ActionEvent e) {
> showNextCard();
> }
> };
>
> public Action aBack = new AbstractAction() {
> public void actionPerformed(java.awt.event.ActionEvent e) {
> showPreviousCard();
> }
> };
>
> and
>
> public void setBack (Action act){
> aBack = act;
> }
>
> public void setContinueAction (Action act)
> {
> aContinue = act;
> }
>
> all in the WizardBase.. the subclasses that want to override just call these
> setters with
> the actions they want..
>
> The only problem is, this must be done in the constructor of the subclasses,
> otherwise SwiX
> will pick up the default implementations from the base class using Reflection.
Hm, the interesting part is missing: your showPreviousCard() and showNextCard()
functions. In the descending classes you have all access you need to the
actions,
eg enable/disable them and the like. The setXxxxAction(Action) methods are not
really needed...
>
> Is this what you meant?
>
Not quite, honestly ;) The whole idea was to get rid of re-implementing actions
in your descendent classes. Use delegation, if you have to -- it solves the
dependencies of real actions -- just implement the methods provided through
delegation by other ones if you do not use actions anymore...
Frank
>
> --
> Nandan Bagchee
>
> Excuse me, but what the hell?
>
> -- Slava Pestov, on seeing:
> FunctorParser parser = new FunctorParser();
> BinaryFunctor toggleOther =
> parser.parseBinary("x.setEnabled(!x.isEnabled())",
>
> JButton.class, ActionEvent.class);
>
>
>
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