Actually its was pretty easy (like most things I try to do with tapestry) as
soon as I understand the concept. Simply getting the
current ComponentEventResultProcessor from the Environment, wrap it in case
of exceptions and let it process the return-value. It is really as easy as
this, EXCEPT you use the processor AND return a value after that.
This way I managed it to have 2 json-objects in the response which made
tapestry.js really mad =D
{"redirectURL":"/TapTestReal/about"}{"content":"And another counter: 11"}
public class Counter {
@InjectComponent
private Zone countzone;
@Inject
private ComponentResources componentResources;
@Environmental
private ComponentEventResultProcessor componentEventResultProcessor;
@Property
@Persist
private int count;
private Object fireValueChanged() throws IOException {
ComponentResultProcessorWrapper callback = new
ComponentResultProcessorWrapper(componentEventResultProcessor);
componentResources.triggerEvent("valueChanged", new Object[]{new
Integer(count)}, callback);
if (!callback.isAborted()) {
return countzone.getBody();
}
return null;
}
public Object onUp() throws IOException {
count++;
return fireValueChanged();
}
public Object onDown() throws IOException {
count--;
return fireValueChanged();
}
public Object onReset() throws IOException {
count = 0;
return fireValueChanged();
}
public String getZoneId(){
return countzone.getClientId(); //with this I can use this
component multiple times on a single page even with ajax enabled
}
}
I cutted some pieces of code which implement features not used in this
context, hopefully it still compiles. That component can be used on a page
like:
Object onValueChangedFromEggCounter(int value){
if(value > 10)
return ToMuchEggs.class;
return null;
}
and everything works like expected (if counter reaches 11 you are redirected
to another page).
- Mario
2009/8/10 Howard Lewis Ship <hls...@gmail.com>
> To be specific, when during an Ajax request the component even returns
> a page class or page instance, Tapestry builds and returns a Link as
> part of the JSON response, the the client-side loads that Link's URL
> into the browser address, performing a redirect.
>
> There are two implementations of ComponentEventResultProcessor, one
> for @Traditional and one for @Ajax ... just bear that in mind if you
> want to read the existing code, or extend the current behavior. They
> are both based on a mapped configuration from return type to a
> handler.
>
> On Sun, Aug 9, 2009 at 5:34 PM, Thiago H. de Paula
> Figueiredo<thiag...@gmail.com> wrote:
> > Em Sat, 08 Aug 2009 15:26:45 -0300, Mario Rabe <
> mario.r...@googlemail.com>
> > escreveu:
> >
> >> Hi,
> >
> > Hi!
> >
> >> how can I do a redirect from a XHR-request? Here an example to make
> clear
> >> what I want to do:
> >
> > If it was a Tapestry-provided event, you could just return a page
> instance,
> > a page class, an URL or a page name in an event handler method.
> > Looking at the Form component sources, it uses this callback instance in
> its
> > VALIDATE_FORM event:
> >
> > ComponentResultProcessorWrapper callback = new
> > ComponentResultProcessorWrapper(componentEventResultProcessor);
> >
> > componentEventResultProcessor comes from an environmental service:
> >
> > @Environmental
> > private ComponentEventResultProcessor componentEventResultProcessor;
> >
> > Try using the above callback and please post the results. :)
> >
> > --
> > Thiago H. de Paula Figueiredo
> > Independent Java consultant, developer, and instructor
> > http://www.arsmachina.com.br/thiago
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org
> > For additional commands, e-mail: users-h...@tapestry.apache.org
> >
> >
>
>
>
> --
> Howard M. Lewis Ship
>
> Creator of Apache Tapestry
> Director of Open Source Technology at Formos
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscr...@tapestry.apache.org
> For additional commands, e-mail: users-h...@tapestry.apache.org
>
>
