Thanks, your feedback led me in the right direction and I've got it
working. I find it strange that when you change the selected item in
a combo box, that you need to create a "contents changed" event. I
would think some sort of "selection changed" event would be more
appropriate. I had to override the
ULCComboBox#contentsChanged(ListDataEvent). When it received an event,
it kept telling the DateComboBoxModel to setSelectedItem(null). I'm
not really sure why. I've noticed that ULCComboBox(List) doesn't
handle null values in the list as I would expect. To get around that
I use "" when I'm dealing with String's, but I was dealing with Date's
this time around. Here are the main code snippets that ended up
working for me:
DateComboBoxModel
import org.springframework.util.ObjectUtils;
public void setSelectedItem(Object item) {
if(!ObjectUtils.nullSafeEquals(_selectedItem, item)){
_selectedItem = (Date)item;
ListDataEvent event = new ListDataEvent(this,
ListDataEvent.CONTENTS_CHANGED, -1, -1);
for(IListDataListener listener : listeners){
listener.contentsChanged(event);
}
}
}
DateComboBox
@Override
public void contentsChanged(ListDataEvent event){}
Thanks,
Cameron
On 5/2/06, Etienne Studer <[EMAIL PROTECTED]> wrote:
Hi Cameron
My guess is that you don't fire an event after setting the selected
element on the combo box model.
Your model should look something like below...
I hope this solves your issue.
Etienne
public class DateComboBoxModel extends AbstractListModel
implements IComboBoxModel {
public Object getSelectedItem() {
return _selectedItem;
}
public void setSelectedItem(Object inItem) {
selectIfChanged(inItem);
}
private void selectIfChanged(Object inItem) {
if (!ObjectUtils.equals(_selectedItem, inItem)) {
_selectedItem = inItem;
fireContentsChanged(this, -1, -1);
}
}
private Object _selectedItem;
}
> -----Original Message-----
> From: [EMAIL PROTECTED] [mailto:ulc-developer-
> [EMAIL PROTECTED] On Behalf Of Cameron Taggart
> Sent: Tuesday, May 02, 2006 5:37 PM
> To: [email protected]
> Subject: [ULC-developer] ComboBox List<Date> setSelectedIndex(0)
>
> I created a DateComboBox and DateComboBoxModel which simply display
> List<Date>. Selecting a date is optional on my form, so the first
> date in the list, I've set to null. I have a "clear" button on my
> form which needs to reset the ComboBox to the first item. Right now,
> the model gets changed to the correct value, but the ComboBox in the
> UI does not. Any idea how I might get the ComboBox selection to
> visually change to the selected item? Was there an event I was
> supposed to fire off?
>
> Thanks,
> Cameron
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