Here the (simplified) code that creates the ListViev, TextFields and Label.
/Anders
final MyPageForm tmpForm = new MyPageForm(ID.FORM);
this.add(tmpForm);
final ContextLabel<Number> tmpTotalWeightsLabel = new
ContextLabel<Number>(ID.TOTAL_WEIGHTS, new
PropertyModel<Number>(this.getPortfolio(), ID.TOTAL_WEIGHTS),
StandardType.PERCENT);
tmpTotalWeightsLabel.setOutputMarkupId(true);
final ListView<BLMarketInstrument> tmpMarketInstrumentListView = new
ListView<BLMarketInstrument>(ID.INSTRUMENTS,
this.getPortfolio().getMarketInstruments()) {
@Override
public void populateItem(final ListItem<BLMarketInstrument>
aListItem) {
final BLMarketInstrument tmpMarketInstrument =
aListItem.getModelObject();
final ContextTextField<Number> tmpMarketWeightTextField = new
ContextTextField<Number>(ID.MARKET_WEIGHT, tmpMarketInstrument,
StandardType.PERCENT);
aListItem.add(tmpMarketWeightTextField);
tmpMarketWeightTextField.add(new OnChangeAjaxBehavior() {
@Override
protected void onUpdate(final AjaxRequestTarget someTarget)
{
someTarget.add(tmpTotalWeightsLabel);
}
});
}
};
tmpMarketInstrumentListView.setReuseItems(true);
tmpForm.add(tmpMarketInstrumentListView);
tmpForm.add(tmpTotalWeightsLabel);
On 13 okt 2011, at 12:40, Anders Peterson wrote:
> Hi,
>
> Upgrading to wicket 1.5.1 from 1.4.18 my ajax updates stopped working.
>
> I have a page with a form. Inside the form there is a repetition (ListView)
> that among other things creates a text field for each item (ListItem). Each
> of those text fields has an OnChangeAjaxBehavior set that should update a
> label. The label should continously display the total sum of the numbers in
> the text fields.
>
> With wicket 1.4.18 (and previous versions) this worked fine.
>
> With 1.5.1 only the first text field in the repetition gets the correct ajax
> behavior - it works the way I want it, and the way it worked with 1.4.*. The
> other text fields are "dead", except for focus set/removed. While typing in
> any of the other text fields nothing is updated (the ajax debug window shows
> no activity). When focus is removed I get a NullPointerException regardless
> of what I've changed.
>
> Is this a (known) bug, or is there a difference between 1.4 and 1.5 that I've
> missed?
>
> /Anders
>
>
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