Re: Questions

[Dan Haywood <da...@haywood-associates.co.uk>]

Hi Dairo,



On 24 May 2016 at 20:34, Dairo Correa Ramirez <da...@ticxar.com>
> wrote:



... and apologies not to have replied before now on this question.




> How I can hide or show depending form part of a selection or action?
>
>
Hm, it's an interesting question.  The Wicket viewer currently doesn't have
an awful lot of support for dynamic updating.  But you could get a
reasonable simulation by having an action that returns the same object, and
then using either hideXxx() supporting methods or a subscriber to
hide/display the appropriate parts of the object.

Simplified:

public class MyClass {

    private int x
    public int getX() { ... }
    public void setX(int x) { ... }

    private int y;
    public int getY() { ... }
    public void setY(int y) { ... }
    public boolean hideY() { return x<0; }

    public MyClass updateX(int newX) {
       setX(x);
       return this;
    }
}

with the above, if the "updateX" action is invoked and the value set to <0,
then the y property would disappear.





> Is it possible to make a flow of consecutive windows. Is a button back next
> several pages?
>
>
Yes, you could emulate this, using either a single view model acting as a
wizard, and holding state to toggle properties on/off; or have a succession
of objects that follow on from each other.

One issue, though, is that to modify any given page of the wizard view
model would open up a prompt, so the UI experience would likely feel
somewhat clumsy.

And, in any case, such wizards are very much against the original naked
objects philosophy: "problem solver over process follower".

But if you really want a wizard, then the Wicket viewer can be extended,
and/or there's also the option of writing a custom viewer against the REST
API surfaced by the RO viewer.

HTH
Dan




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