Jonathan Locke wrote:
>
>
> ComponentFeedbackPanel will only ever show error messages reported by the
> given component:
>
> public boolean accept(FeedbackMessage message)
> {
> return component == message.getReporter();
> }
>
> If you want to show validation errors for a form when there are multiple
> forms on the page, you're going to need to create your own subclass of
> FeedbackPanel (or your own IFeedback implementation) which filters so that
> it only shows messages reported by the given form. More like:
>
> Form form;
>
> public boolean accept(FeedbackMessage message)
> {
> return message.getReporter() == form || isChild(form,
> message.getReporter());
> }
>
> would be nice to add isChildOf to MarkupContainer so this could be
> form.isChild(message.getReporter()), but it's an easy method to write
> (just walk up the parent hierarchy looking for form).
>
> A component that does this might make a nice wicket extension. Something
> like FormFeedbackPanel(Form form).
>
Thanks, Jonathan. In fact there is a contains() method that obviates the
need for isChild() or isChildOf(). Here's my implementation, it does exactly
what I need:
public class FormFeedbackPanel extends FeedbackPanel
{
public FormFeedbackPanel(String id, final Form form)
{
super(id, new ComponentFeedbackMessageFilter(form)
{
@Override
public boolean accept(FeedbackMessage message)
{
return message.getReporter() == form
|| form.contains(message.getReporter(),
true);
}
});
}
}
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