Ahhhh. I've never encountered the fallback stuff, since my client's
browsers always support JS. A null object would probably be better
for this case. Good idea.
On Sun, Aug 15, 2010 at 11:39 AM, Don Ferguson <don.fergu...@gmail.com> wrote:
> In the case of AjaxFallbackLink (and maybe this is the only case where this
> really applies), the whole page is going to be re-rendered if javascript is
> not supported. So adding components to the target is superfluous.
>
> On Aug 15, 2010, at 7:44 AM, James Carman wrote:
>
>> How does the ajax logic get executed if the client doesn't have
>> Javascript enabled?
>>
>> On Sun, Aug 15, 2010 at 10:23 AM, Don Ferguson <don.fergu...@gmail.com>
>> wrote:
>>> When using AjaxRequestTarget, one always has to check for null, as in:
>>>
>>> if (target != null) {
>>> target.addComponent(...);
>>> }
>>>
>>> or suffer the consequences of an NPE at deployment time for users who don't
>>> have javascript enabled.
>>>
>>> It would make life easier if Wicket just supplied a no-op AjaxRequestTarget
>>> into the onClick() method, rather than null. Then the code wouldn't need
>>> to check for null; the AjaxRequestTarget would always be instantiated.
>>> And if the code really needs to know whether it's dealing with an Ajax
>>> request, it can do an instanceof, as in:
>>>
>>> if (! target instanceof NoopAjaxRequestTarget) {
>>> ....
>>> }
>>>
>>> Thoughts?
>>>
>>> -Don
>>>
>>>
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