I am aware of the getPrecondition() method on IAjaxCallListener that I can
use to prevent the ajax call from happening on the click of a link, button,
etc, but I'm wondering if anything in the wicket framework can prevent the
default altogether. Let me try to explain with an example of my use case:
final RadioChoice<Hobbit> favorite = new RadioChoice<Hobbit>("favorite",
Model.of(Hobbit.Samwise), Arrays.asList(Hobbit.values()));
favorite.add(new AjaxFormChoiceComponentUpdatingBehavior() {
@Override
protected void onUpdate(AjaxRequestTarget target) {
System.out.println("update has been called. model is now: " +
favorite.getModelObject());
}
@Override
protected void updateAjaxAttributes(AjaxRequestAttributes attributes) {
super.updateAjaxAttributes(attributes);
attributes.getAjaxCallListeners().add(new
AjaxCallListener().onPrecondition("return confirm(\"Did you change your
mind?\");"));
}
});
When I click on one of the radio buttons or its label, I get the
confirmation box. If I click "OK", it calls the onUpdate() as expected.
If I click "Cancel", it does not call onUpdate as expected, but what I
would like it to do is revert the state or the RadioChoice before I clicked
it. Same thing with CheckBoxMultipleChoice.
Is there an easy way in wicket to do this, or do I need to write the custom
javascript to do this myself? If wicket doesn't do this, should/can it?
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