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Posted to users@wicket.apache.org by Kai Mütz <km...@googlemail.com> on 2008/06/04 11:40:48 UTC
Problem: Check within a ListView
Hi,
I have a ListView nested in a CheckGroup which works actually fine. In some
cases I have to disable (or make invisible) a certain Check within the
Checkgroup. e.g.
CheckGroup roleGroup = new CheckGroup("roles");
add(roleGroup);
roleGroup.add(new CheckGroupSelector("selector"));
ListView roleList = new ListView("role-list", new DetachableRolesModel()) {
@Override
protected void populateItem(final ListItem item) {
Check check = new Check("check", item.getModel());
item.add(check);
item.add(new Label("role",
new PropertyModel(item.getModel(), "value")));
if (condition) {
check.setEnabled(false);
}
}
};
roleList.setReuseItems(true);
roleGroup.add(roleList);
The problem is that the disabled item is removed from my model while
submitting the form although the disabled checkbox is checked. A disabled
and checked checkbox should not yield to the same result as a enabled and
unchecked checkbox. If I modify it to check.setEnabled(true); everything
works fine. Same with setVisibiliy().
What am I doing wrong?
Kai
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Re: Problem: Check within a ListView
Posted by Timo Rantalaiho <Ti...@ri.fi>.
On Sat, 21 Jun 2008, Kai Mütz wrote:
> I have no idea how to implement such a model. Do you have any hint? I am not
> sure where/when exactly the IModel.getObject() method is called and where
> the missing values can be inserted.
Something like this, I'm not sure if I got your requirements
right but maybe this will get you started:
protected void populateItem(final ListItem item) {
Check check = new Check("check", new Model() {
@Override
public void setObject(Object object) {
if (!isEnabled()) {
return;
}
Boolean enableRole = (Boolean) object;
if (enableRole) {
user().addRole(getRoleOf(item));
}
user().removeRole(getRoleOf(item));
}
@Override
public Object getObject() {
return user().hasRole(getRoleOf(item));
}
});
getObject() of the Check is called at least when the Check
is rendered, to be able to tick it or not as needed. If you
are really interested, you can always put Thread.dumpStack()
in getObject() to see when it is called and by whom.
Best wishes,
Timo
--
Timo Rantalaiho
Reaktor Innovations Oy <URL: http://www.ri.fi/ >
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Re: Problem: Check within a ListView
Posted by Kai Mütz <km...@googlemail.com>.
I have no idea how to implement such a model. Do you have any hint? I am not
sure where/when exactly the IModel.getObject() method is called and where
the missing values can be inserted.
Regards, Kai
2008/6/5 Igor Vaynberg <ig...@gmail.com>:
> right, so like that its not going to work. you need a model in between
> that can buffer values and insert missing checked by disabled values.
>
> -igor
>
> On Thu, Jun 5, 2008 at 4:36 AM, Kai Mütz <km...@googlemail.com> wrote:
> > Igor Vaynberg <ma...@gmail.com> wrote:
> >> it is possible, just depends on how you set up your models. it is not
> >> possible by directly reading the collection of checkgroup, but you
> >> can come up with a different way.
> >>
> >
> > The checkgroup is part of a form based on a CompoundPropertyModel
> wrapping a
> > User object which has a "roles" property (List). Nothing special.
> >
> > Kai
> >
> >
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> >
> >
>
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Re: Problem: Check within a ListView
Posted by Igor Vaynberg <ig...@gmail.com>.
right, so like that its not going to work. you need a model in between
that can buffer values and insert missing checked by disabled values.
-igor
On Thu, Jun 5, 2008 at 4:36 AM, Kai Mütz <km...@googlemail.com> wrote:
> Igor Vaynberg <ma...@gmail.com> wrote:
>> it is possible, just depends on how you set up your models. it is not
>> possible by directly reading the collection of checkgroup, but you
>> can come up with a different way.
>>
>
> The checkgroup is part of a form based on a CompoundPropertyModel wrapping a
> User object which has a "roles" property (List). Nothing special.
>
> Kai
>
>
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> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
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RE: Problem: Check within a ListView
Posted by Kai Mütz <km...@googlemail.com>.
Igor Vaynberg <ma...@gmail.com> wrote:
> it is possible, just depends on how you set up your models. it is not
> possible by directly reading the collection of checkgroup, but you
> can come up with a different way.
>
The checkgroup is part of a form based on a CompoundPropertyModel wrapping a
User object which has a "roles" property (List). Nothing special.
Kai
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Re: Problem: Check within a ListView
Posted by Igor Vaynberg <ig...@gmail.com>.
it is possible, just depends on how you set up your models. it is not
possible by directly reading the collection of checkgroup, but you can
come up with a different way.
-igor
On Wed, Jun 4, 2008 at 8:29 AM, Kai Mütz <km...@googlemail.com> wrote:
> Igor Vaynberg <ma...@gmail.com> wrote:
>> you are not doing anything wrong, that is how things are meant to
>> work.
>>
>
> So, isn't it possible to add a disabled checkbox to a listview without
> removing the item from the corresponding collection?
>
> Kai
>
>
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RE: Problem: Check within a ListView
Posted by Kai Mütz <km...@googlemail.com>.
Igor Vaynberg <ma...@gmail.com> wrote:
> you are not doing anything wrong, that is how things are meant to
> work.
>
So, isn't it possible to add a disabled checkbox to a listview without
removing the item from the corresponding collection?
Kai
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Re: Problem: Check within a ListView
Posted by Igor Vaynberg <ig...@gmail.com>.
you are not doing anything wrong, that is how things are meant to work.
-igor
On Wed, Jun 4, 2008 at 2:40 AM, Kai Mütz <km...@googlemail.com> wrote:
> Hi,
>
> I have a ListView nested in a CheckGroup which works actually fine. In some
> cases I have to disable (or make invisible) a certain Check within the
> Checkgroup. e.g.
>
> CheckGroup roleGroup = new CheckGroup("roles");
> add(roleGroup);
> roleGroup.add(new CheckGroupSelector("selector"));
> ListView roleList = new ListView("role-list", new DetachableRolesModel()) {
> @Override
> protected void populateItem(final ListItem item) {
> Check check = new Check("check", item.getModel());
> item.add(check);
> item.add(new Label("role",
> new PropertyModel(item.getModel(), "value")));
> if (condition) {
> check.setEnabled(false);
> }
> }
> };
> roleList.setReuseItems(true);
> roleGroup.add(roleList);
>
> The problem is that the disabled item is removed from my model while
> submitting the form although the disabled checkbox is checked. A disabled
> and checked checkbox should not yield to the same result as a enabled and
> unchecked checkbox. If I modify it to check.setEnabled(true); everything
> works fine. Same with setVisibiliy().
>
> What am I doing wrong?
>
> Kai
>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
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