The list that you provide... does it have null values in them? That
might be the problem here.
An example of a working one is the locale selection in the FormInput example.
Eelco
On 9/23/05, Ruud Booltink <[EMAIL PROTECTED]> wrote:
> Hi
>
> we're currently just diving into Wicket......
>
> Does anyone have an example of a dropdownchoice that uses the
> onselectionchage method?
> We tried to extend an example (Ensode's pizzabuilder) so the
> dropdownchoice would react as soon as the selection is changed. We
> subclassed the dropdownchoice to enable
> wantOnSelectionChangedNotifications() and rewritten
> onSelectionChanged(java.lang.Object newSelection) into:
>
> protected void onSelectionChanged(java.lang.Object newSelection)
> {
> System.out.println("test: " + newSelection);
> }
>
> this is just a simple consoleprint which shows that newselection always
> equals null
> the page refreshes at a selectionchange, but the dropdownchoice goes
> back to the null choise.
>
> error:
>
> test: null
> test: null
> test: null
> wicket.WicketRuntimeException: Error getting id value of: Hand Tossed
> for property: id
> at
> wicket.markup.html.form.ChoiceRenderer.getIdValue(ChoiceRenderer.java:152)
> ...
>
> the test: nul occurs when we try to select the first option. no
> exception is thrown, but the dropdownchoise goes back to the null
> selection.. the exception is trown when we try to select the secorn or
> third or #th selection.
>
>
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