So heres what I do, code is possibly flawed. I've tried with the abstractmodel instead which works but gets multiple hits pr request which makes it hard to detect if I should repopulate, actually it seems as it hits on modelchanging and onmodelchanged...
Basicly what Im trying to do is to have a dependency on a dropdown and a
listbox, so if the dropdown is changed and one thing is selected in the listbox
my LoadableDetachableModel should be populated with new values. If
listbox.size!=1 then no values should be loaded.
In the begining I based my example on Igors Ajax radiochoice example.
LoadableDetachableModel detachdebugmodel = new
LoadableDetachableModel() {
public ItemContainer previous = new ItemContainer();
private boolean previousUpdate = false;
private String value = "";
protected Object load() {
value = "No Populate compare";
if (reportModel.getOmraade().getDataItem() !=
null
&& previous.getDataItem() !=
null) {
if
(!reportModel.getOmraade().getDataItem().equals(
previous.getDataItem())) {
previousUpdate = true;
value = "Repopulate AreaType
changed!";
return value;
}
}
if
(reportModel.getOmraade_selected().getDualModel().getFill()
.size() == 1) {
if (previous.getDataItem().equals(
reportModel.getOmraade().getDataItem()) == false
|| !previousUpdate) {
value = "Enable Populate
compareTypes and enable compareTypes";
previousUpdate = true;
return value;
}
value = "not changed no need to update";
return value;
} else {
previous
.setDataItem(reportModel.getOmraade().getDataItem());
value = "EMPTY & disable CompareTypes";
previousUpdate = false;
return value;
}
}
};
TextArea myText = new TextArea("debugmodel", detachdebugmodel);
-----Original Message-----
From: [EMAIL PROTECTED] on behalf of Johan Compagner
Sent: Fri 14-07-2006 13:37
To: wicket-user@lists.sourceforge.net
Cc:
Subject: Re: [Wicket-user] Playing with models:)
But what do you set then?
another id?
You can't set the object really. Because the object is loaded in the load
method by i guess an id.
So the id is the real object not the thing that you would get through
setObject()..
johan
On 7/14/06, Nino Wael <[EMAIL PROTECTED]> wrote:
>
> That is indeed is suitable, but in the example im doing, I use the model
> in a wicket.markup.html.form.TextArea, which need a model where it can
> store an object in as well.
>
> So I guess I need a loadableDetachableModel which implements Abstractmodel
> instead of abstractreadonlymodel?
>
> Regards Nino
>
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:
> [EMAIL PROTECTED] On Behalf Of Gwyn Evans
> Sent: 14. juli 2006 12:39
> To: wicket-user@lists.sourceforge.net
> Subject: Re: [Wicket-user] Playing with models:)
>
> You'd normally set all the internal objects up during the initial
> load() processing, which is called once at the start of each request.
>
> If that's not suitable, you might want to expand on what you're trying
> to do & during what phase of a request?
>
> /Gwyn
>
> On 14/07/06, Nino Wael <[EMAIL PROTECTED]> wrote:
> > Hi Eelco
> >
> > It seems as the LoadableDetachableModel do not support setobject? What
> should I use instead?
> >
> > -regards Nino
> >
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:
> [EMAIL PROTECTED] On Behalf Of Eelco Hillenius
> > Sent: 14. juli 2006 09:26
> > To: wicket-user@lists.sourceforge.net
> > Subject: Re: [Wicket-user] Playing with models:)
> >
> > IModel#getObject is called anytime a component accesses it. Basically,
> > you should never depend on that method getting called a fixed number
> > of times; it is not designed for that. Typically if you need to do
> > heavy operations such as loading data from a database, you should use
> > detachable models. A good model for such things is
> > LoadableDetachableModel. the #load method is only called once a
> > request, and the loaded object is then reused throughout the request.
> > At the end of the request, the model is detached and the temporary
> > object is cleaned up.
> >
> > Eelco
> >
> >
> > On 7/14/06, Nino Wael <[EMAIL PROTECTED]> wrote:
> > >
> > >
> > >
> > > Hah got your Attention there, though sadly enough its only
> abstractmodels.
> > >
> > >
> > >
> > > Im not sure when getObject are supposed to be called(what triggers a
> call).
> > >
> > >
> > >
> > > The following I can see are that my model are called on page
> construct(which
> > > makes sense to me). But on form submit the model are called two times,
> is
> > > that behaviour normal, also in what order are models called? My model
> are
> > > dependant on some of the other model on the page so I would always
> need for
> > > them to be updated first.
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Regards Nino
> > >
> > >
>
>
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