Oh NO!!!!
This completely solved my problem!!!!
Now all is working like expected...
Now I'm able to render a Javascript-Callback-Function with a custom
EL-Function within a JSP and if I use this Javascript-Function in a link
for example I can update component on the current page. Example:
<wicket:jsp file="/TestPage.jsp" />
In JSP:
<a href="#" onClick="${wicket:createAjaxCallback()}">Update</a>
In WebPage with setStatelassHint(false):
@Override
public void onEvent(IEvent<?> event) {
if (event.getPayload() instanceof GlobalAjaxEvent) {
AjaxRequestTarget ajaxRequestTarget =
((GlobalAjaxEvent)event.getPayload()).getAjaxRequestTarget();
label.setDefaultModelObject("updated panel");
ajaxRequestTarget.add(label);
}
}
and in Application's init method:
GlobalAjaxResource.configure(this);
I will try out to make this call also available to forms or other html
elements within jsps and then I'm going to publish it on wicketstuff minis.
:-)
Thanks a lot for all the help and time you spend by solving this problem!
kind regards
Tobias
2014-09-10 12:16 GMT+02:00 Martin Grigorov <mgrigo...@apache.org>:
> Tobias sent me a quickstart app.
>
> TestPage is stateless and thus never stored in the storages.
> Just add setStatelessHint(false) to its constructor and the problem
> disappears.
>
> Martin Grigorov
> Wicket Training and Consulting
> https://twitter.com/mtgrigorov
>
>
> On Tue, Sep 9, 2014 at 10:10 PM, Tobias Soloschenko <
> tobiassolosche...@googlemail.com> wrote:
>
> > The usecase requires it :-) I send an example to you.
> >
> > I hope this will be possible because then you are also able to do ajax
> > requests from embedded jsp files. :-D
> >
> > thanks anyway!
> >
> > > Am 09.09.2014 um 16:29 schrieb "Richter, Marvin" <
> > marvin.rich...@freenetdigital.com>:
> > >
> > > That definitely sounds like a really odd use case or am I wrong?
> > >
> > > Do you really want to generate the URL outside from the Wicket context?
> > > I mean this is something which is heavily tied to wicket anyway so why
> > not generating it inside it's context?
> > > And where do you need/use the final generated URL? I guess inside the
> > Wicket context ...
> > >
> > > Maybe you should rethinking your use case, I bet the problem you're
> > trying to solve can be solved much, much easier!
> > >
> > > Anyway .. wish you luck ;)
> > >
> > > -----Original Message-----
> > > From: Tobias Soloschenko [mailto:tobiassolosche...@googlemail.com]
> > > Sent: Tuesday, September 09, 2014 2:58 PM
> > > To: users@wicket.apache.org
> > > Subject: Re: Global Ajax Event Handler
> > >
> > > Thats the point. It is not used within a Component / Behavior - so I
> > cant use getPage() ...
> > >
> > >> Am 09.09.2014 um 14:50 schrieb Martin Grigorov <mgrigo...@apache.org
> >:
> > >>
> > >> The UrlGenerator class is used somewhere where the Page is available,
> > no ?
> > >> In SomeComponent/SomeBehavior:
> > >>
> > >> UrlGenerator generator = new UrlGenerator(); Url url =
> > >> generator.generate(getPage().getPageId());
> > >>
> > >> Session.get().getPageManager().getPage(exisingAndNonExpiredPageId) is
> > >> the way to get a reference to the page.
> > >> Wicket uses this API internally every time you click a link or button.
> > >>
> > >> Martin Grigorov
> > >> Wicket Training and Consulting
> > >> https://twitter.com/mtgrigorov
> > >>
> > >>
> > >> On Tue, Sep 9, 2014 at 3:45 PM, Tobias Soloschenko <
> > >> tobiassolosche...@googlemail.com> wrote:
> > >>
> > >>> And thats the question I was looking for - how do I get the current
> > >>> page id within the class that generates the url which is no component
> > >>> and the second question was how do I get the page to that id, because
> > >>> (Page)
> > >>> WebSession.get().getPageManager().getPage(i.get()) returns null for
> > >>> int i 0-10, event if I cleared the browsers cache / restarted the
> > server.
> > >>>
> > >>> kind regards and big thanks for all the help!
> > >>>
> > >>> Tobias
> > >>>
> > >>> 2014-09-09 14:28 GMT+02:00 Martin Grigorov <mgrigo...@apache.org>:
> > >>>
> > >>>> Session#pageId is a counter that is used to give an id to the next
> > >>> created
> > >>>> page.
> > >>>> It is not the id of the currently used page!
> > >>>>
> > >>>> You will need to provide the pageId somehow to the class that
> > >>>> generates
> > >>> the
> > >>>> url.
> > >>>>
> > >>>> Martin Grigorov
> > >>>> Wicket Training and Consulting
> > >>>> https://twitter.com/mtgrigorov
> > >>>>
> > >>>>
> > >>>> On Tue, Sep 9, 2014 at 3:13 PM, Tobias Soloschenko <
> > >>>> tobiassolosche...@googlemail.com> wrote:
> > >>>>
> > >>>>> The method getPage() is not available at the place where I'm
> > >>>>> building
> > >>> the
> > >>>>> link - I'm not within a component and I try to get the page by
> > >>>>> content
> > >>> of
> > >>>>> the session. :-)
> > >>>>>
> > >>>>> I didn't modified the Session - the pageId is stored in
> > >>>>> org.apache.wicket.Session.pageId which is an AtomicInteger
> > >>>>>
> > >>>>>
> > >>>>> 2014-09-09 14:06 GMT+02:00 Martin Grigorov <mgrigo...@apache.org>:
> > >>>>>
> > >>>>>> Pass the pageId as a query string parameter.
> > >>>>>>
> > >>>>>> PageParameters params = new PageParameters(); params.set("pageId",
> > >>>>>> getPage().getPageId()); theUrlToTheReference =
> > >>>>>> requestCycle.urlFor(yourResRef, params);
> > >>>>>>
> > >>>>>> Then in the IResource (better extend AbstractResource) just read
> > >>>>>> it
> > >>>> from
> > >>>>>> the request parameters.
> > >>>>>>
> > >>>>>> Storing the pageId in the session is not OK because the user may
> > >>>>>> open
> > >>>> two
> > >>>>>> different pages in separate tabs/windows and this will break.
> > >>>>>>
> > >>>>>>
> > >>>>>> Martin Grigorov
> > >>>>>> Wicket Training and Consulting
> > >>>>>> https://twitter.com/mtgrigorov
> > >>>>>>
> > >>>>>>
> > >>>>>> On Tue, Sep 9, 2014 at 3:01 PM, Tobias Soloschenko <
> > >>>>>> tobiassolosche...@googlemail.com> wrote:
> > >>>>>>
> > >>>>>>> Thanks again for the fast answer. My code now looks this way:
> > >>>>>>>
> > >>>>>>> Field declaredField =
> > >>>>>>> WebSession.get().getClass().getSuperclass()
> > >>>>>>> .getDeclaredField("pageId");
> > >>>>>>>
> > >>>>>>> declaredField.setAccessible(true);
> > >>>>>>> AtomicInteger i = (AtomicInteger)
> > >>>>>>> declaredField.get(WebSession.get());
> > >>>>>>> Page page = (Page) WebSession.get().getPageManager()
> > >>>>>>> .getPage(i.get());
> > >>>>>>>
> > >>>>>>> AjaxRequestTarget newAjaxRequestTarget =
> > >>>> ((WebApplication)
> > >>>>>>> Application.get())
> > >>>>>>> .newAjaxRequestTarget(page);
> > >>>>>>>
> > >>>>>>> RequestCycle.get().scheduleRequestHandlerAfterCurrent(
> > >>>>>>> newAjaxRequestTarget);
> > >>>>>>>
> > >>>>>>> I dont know how to get the current pageId but from the Session.
> > >>>>>>> The
> > >>>>> page
> > >>>>>> at
> > >>>>>>> this place is null. :-(
> > >>>>>>>
> > >>>>>>>
> > >>>>>>>
> > >>>>>>> 2014-09-09 13:53 GMT+02:00 Martin Grigorov <mgrigo...@apache.org
> >:
> > >>>>>>>
> > >>>>>>>> On Tue, Sep 9, 2014 at 2:05 PM, Tobias Soloschenko <
> > >>>>>>>> tobiassolosche...@googlemail.com> wrote:
> > >>>>>>>>
> > >>>>>>>>> Hi again,
> > >>>>>>>>>
> > >>>>>>>>> I tried out that code you mentioned here.
> > >>>>>>>>> WebSession.get().getPageManager().getPage(int i) returns
> > >>>>>>> IManageablePage
> > >>>>>>>>> which is not applicable as argument for newAjaxRequestTarget.
> > >>>>>>>>
> > >>>>>>>> cast it
> > >>>>>>>> it is known that in your environment you don't use any custom
> > >>>>>>>> IManageablePage/IRequestablePage impls (see IPageFactory)
> > >>>>>>>>
> > >>>>>>>>
> > >>>>>>>>>
> > >>>>>>>>> The second thing is how do I get the instance of a page by
> > >>> class
> > >>>>> with
> > >>>>>>> the
> > >>>>>>>>> last page id not from within a component (this would be simple
> > >>>>>>>> getPage())?
> > >>>>>>>>
> > >>>>>>>> I didn't get this
> > >>>>>>>> Please re-phrase
> > >>>>>>>>
> > >>>>>>>>
> > >>>>>>>>>
> > >>>>>>>>> 2014-09-09 11:51 GMT+02:00 Martin Grigorov <
> > >>> mgrigo...@apache.org
> > >>>>> :
> > >>>>>>>>>
> > >>>>>>>>>> I've re-read the message and I think I got it.
> > >>>>>>>>>> What you really need is a mounted resource
> > >>>>>>>>>> (WebApplication#mountResource(someResourceReference))
> > >>>>>>>>>> To get a url to it use: theUrl =
> > >>>> requestCycle.urlFor(sameResRef,
> > >>>>>>>>>> parametersWithPageId)
> > >>>>>>>>>> Wicket.Ajax.get({"u": theUrl, ...}) In IResource#respond() you
> > >>>>>>>>>> can create AjaxRequestTarget with:
> > >>>>>>>>>>
> > >>>>>>>>>> Page page =
> > >>>>> session.getPageManager().get(parameters.get("pageId"))
> > >>>>>>>>>> target = webApplication.newAjaxRequestTarget(page)
> > >>>>>>>>>> requestCycle.scheduleRequestHandlerAfterCurrent(target);
> > >>>>>>>>>> page.send(page, Broadcast.BREADTH, new SomeEvent(target))
> > >>>>>>>>>>
> > >>>>>>>>>> in SomeComponent#onEvent() use
> > >>> someEvent.getTarget().add(this)
> > >>>> to
> > >>>>>> add
> > >>>>>>>> the
> > >>>>>>>>>> component when SomeEvent is broadcasted
> > >>>>>>>>>>
> > >>>>>>>>>> Martin Grigorov
> > >>>>>>>>>> Wicket Training and Consulting https://twitter.com/mtgrigorov
> > >>>>>>>>>>
> > >>>>>>>>>>
> > >>>>>>>>>> On Tue, Sep 9, 2014 at 12:40 PM, Richter, Marvin <
> > >>>>>>>>>> marvin.rich...@freenetdigital.com> wrote:
> > >>>>>>>>>>
> > >>>>>>>>>>> What you are looking for is the Wicket Event mechanism.
> > >>>>>>>>>>>
> > >>>>>>>>>>> This allows you to send a broadcast to a specified
> > >>> Component
> > >>>>>> (e.g.
> > >>>>>>>> the
> > >>>>>>>>>>> current page) and a payload (e.g. your custom event type
> > >>>> which
> > >>>>>>>> contains
> > >>>>>>>>>>> information).
> > >>>>>>>>>>>
> > >>>>>>>>>>> In the Components which should react on the event you
> > >>>> override
> > >>>>>> the
> > >>>>>>>>> method
> > >>>>>>>>>>> onEvent, check if the event is of your type and if so, do
> > >>>> with
> > >>>>>> the
> > >>>>>>>>> event
> > >>>>>>>>>>> payload whatever you want.
> > >>>>>>>>>>>
> > >>>>>>>>>>> Check out
> > >>>
> http://www.wicket-library.com/wicket-examples/events/wicket/bookmarka
> > >>> ble/org.apache.wicket.examples.source.SourcesPage?1&SourcesPage_class
> > >>> =org.apache.wicket.examples.events.DecoupledAjaxUpdatePage
> > >>>>>>>>>>> for a good example.
> > >>>>>>>>>>>
> > >>>>>>>>>>> Best,
> > >>>>>>>>>>> Marvin
> > >>>>>>>>>>>
> > >>>>>>>>>>> -----Original Message-----
> > >>>>>>>>>>> From: Tobias Soloschenko [mailto:
> > >>>>>> tobiassolosche...@googlemail.com]
> > >>>>>>>>>>> Sent: Tuesday, September 09, 2014 11:31 AM
> > >>>>>>>>>>> To: users@wicket.apache.org
> > >>>>>>>>>>> Subject: Re: Global Ajax Event Handler
> > >>>>>>>>>>>
> > >>>>>>>>>>> Hi,
> > >>>>>>>>>>>
> > >>>>>>>>>>> thanks for the answer, but this is only a client side event
> > >>>>> hook
> > >>>>>>> not
> > >>>>>>>>> for
> > >>>>>>>>>>> processing a request to the Server. I added a pseudo code
> > >>> to
> > >>>>> the
> > >>>>>>>>> question
> > >>>>>>>>>>> of martin who asked me what I exactly want to do.
> > >>>>>>>>>>>
> > >>>>>>>>>>> Thanks anyway for the fast answer!
> > >>>>>>>>>>>
> > >>>>>>>>>>> kind regards,
> > >>>>>>>>>>>
> > >>>>>>>>>>> Tobias
> > >>>>>>>>>>>
> > >>>>>>>>>>>> Am 09.09.2014 um 11:06 schrieb Tom Götz <t...@decoded.de
> > >>>> :
> > >>>>>>>>>>>>
> > >>>>>>>>>>>> See
> > >>>>>>> https://cwiki.apache.org/confluence/display/WICKET/Wicket+Ajax
> > >>>>>>>> ,
> > >>>>>>>>>>> section "Global Ajax call listeners“.
> > >>>>>>>>>>>>
> > >>>>>>>>>>>> Cheers,
> > >>>>>>>>>>>> -Tom
> > >>>>>>>>>>>>
> > >>>>>>>>>>>>
> > >>>>>>>>>>>>> On 09.09.2014, at 10:58, Tobias Soloschenko <
> > >>>>>>>>>>> tobiassolosche...@googlemail.com> wrote:
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> Hi all,
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> is there a way to register a global ajax event handler
> > >>>>> within
> > >>>>>>>>> Wicket?
> > >>>>>>>>>>> For normal there is the AbstractDefaultAjaxBehavior which
> > >>> is
> > >>>>>> added
> > >>>>>>>> to a
> > >>>>>>>>>>> component. And then the CallbackScript can be obtained and
> > >>>> used
> > >>>>>>>> within
> > >>>>>>>>> a
> > >>>>>>>>>>> OnDomReadyHeaderItem for example.
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> Is there a way to do this on application level so that
> > >>> Im
> > >>>>> able
> > >>>>>>> to
> > >>>>>>>>> get
> > >>>>>>>>>>> the CallbackScript from the instantiated Application?
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> kind regards
> > >>>>>>>>>>>>>
> > >>>>>>>>>>>>> Tobias
> > >>>>> -------------------------------------------------------------------
> > >>>>> --
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