hello,
@unselectedLabel:
let's think about the following scenario:
users have the option to select an entry (emphasis on option).
-> a user would like to discard his/her choice. with your suggestion there
is no neutral field any more.
-> the user has no easy possibility to deselect his/her choice.
ok - after the bug is fixed you have to use tr:selectItem instead of
unselectedLabel to provide a permanent neutral option for the scenario
above.
or we have to introduce a new attribute (e.g. permanentUnselectedLabel or
something similar, which indicates if the unselectedLabel should stay
available or not).
what's your opinion about that?
@dynamic items:
again just sample source code:
<tr:selectOneChoice id="selectOne" value="-1" valueChangeListener="#{
bean.change}" autoSubmit="true" partialTriggers="selectOne"
immediate="true">
<tr:selectItem label="Please choose" value="-1"
rendered="#{!bean.valueSelected}"/>
<f:selectItems value="#{bean.items}"/>
</tr:selectOneChoice>
within the bean:
private boolean valueSelected;
private List<SelectItem> items;
public boolean isValueSelected()
{
return valueSelected;
}
public void setValueSelected(boolean valueSelected)
{
this.valueSelected = valueSelected;
}
public List<SelectItem> getItems()
{
if(items == null)
{
items = new ArrayList<SelectItem>();
for(int i = 0; i < 3; i++)
{
items.add( new SelectItem( i, "value: " + i ) );
}
}
return items;
}
public void setItems(List<SelectItem> items)
{
this.items = items;
}
public void change(ValueChangeEvent event)
{
setValueSelected( true );
}
regards,
gerhard
2007/12/12, Matthias Wessendorf <[EMAIL PROTECTED]>:
>
> this sounds odd to me as well.
>
> I would expect, the unselectedLabel goes away, once there was a selection.
>
> Do you mind to file a bug for this?
>
> -M
>
> On Dec 12, 2007 12:21 PM, Stephen Friedrich <[EMAIL PROTECTED]> wrote:
> > Thanks for the answer.
> > So basically you are saying I can't use
> > <tr:selectOneChoice unselectedLabel="Please choose" ...> for this?!
> > As you suggested I can "fake" that label myself, but I wonder what's the
> > purpose of the trinidad attribute if it does not do this automatically.
> > Part of the problem is that my select items are not hardcoded (are they
> ever
> > in real apps?), but based on a query. So I would have to wrap that query
> in
> > my backing bean to dynamically add/remove the unselected label. If I do
> that
> > I have to stop using entites (which are automatically converted to
> select
> > items by seam's s:selectItems), but will have to explicitly create
> > SelectItems. Quite a mess for such a simple feature.
> >
> > The current behaviour seems like a bug to me.
> > Why the heck does trinidad show an "unselected label" if there actually
> _is_
> > a selection?
> >
> >
> >
> > hello,
> >
> > just a sample source code:
> >
> > <tr:selectOneChoice id="selectOne" value="0"
> > valueChangeListener="#{bean.change}" autoSubmit="true"
> > partialTriggers="selectOne" immediate="true">
> > <tr:selectItem label="Please choose" value="0"
> > rendered="#{!bean.valueSelected}"/>
> > <tr:selectItem label="one" value="1"/>
> > <tr:selectItem label="two" value="2"/>
> > </tr:selectOneChoice>
> >
> >
> > within the bean:
> >
> > private boolean valueSelected;
> >
> > public boolean isValueSelected()
> > {
> > return valueSelected;
> > }
> >
> > public void setValueSelected(boolean valueSelected)
> > {
> > this.valueSelected = valueSelected;
> > }
> >
> > public void change(ValueChangeEvent event)
> > {
> > setValueSelected( true );
> > }
> >
> > regards,
> > gerhard
> >
> >
> >
> > 2007/12/12, Stephen Friedrich < [EMAIL PROTECTED]>:
> > I like to show "Please choose" in a selectOneChoice as long as no
> > option has been selected, yet.
> > As soon as the user selects one of the items the label should vanish
> > from the list.
> > (autoSubmit is set and the selectOneChoice is partialTrigger for
> itself.)
> > It really doesn't make any sense to select "Please choose" from
> > the list after having already selected something for real.
> >
> >
> >
> > --
> >
> > http://www.irian.at
> >
> > Your JSF powerhouse -
> > JSF Consulting, Development and
> > Courses in English and German
> >
> > Professional Support for Apache MyFaces
>
>
>
> --
> Matthias Wessendorf
>
> further stuff:
> blog: http://matthiaswessendorf.wordpress.com/
> sessions: http://www.slideshare.net/mwessendorf
> mail: matzew-at-apache-dot-org
>
--
http://www.irian.at
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Courses in English and German
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