Thanks, Martin!
I have one more question though: Last time I checked,
AbstractDefaultAjaxBehavior returned some custom XML to the client that
then got interpreted by wicket.js to do things like component markup
replacement etc. How do I get AbstractDefaultAjaxBehavior to return just
a plain JSON response ? There's no
AjaxRequestTarget#setJSONResponse(String) ... do I need to schedule a
special IRequestHandler to do this ?
Thanks,
Tobias
Hi,
On Mon, Mar 16, 2020 at 10:56 AM Tobias Gierke <[email protected]>
wrote:
Hi,
We have a large (>350 pages) Wicket application that is currently using
server-side charts (JFreeChart) but are looking for a smooth way to
migrate to client-side D3.js charts. Ideally we would like to be able to
do something like this:
ChartImage img = ...
img.add( new JSONBehaviour() {
public String getChartDataJSON() {
return ....;
}
} ;
The behaviour would write a callback URL as an attribute to the markup.
The callback URL would be an endpoint that returns a plain AJAX response
(the dataset to render for this chart). The tricky part is dynamically
registering a callback URL that is scoped to the life-cycle of the
component and returns a plain AJAX response. Since something similar
must already be happening for Wickert AJAX behaviours, is there a way I
can piggy-back on the same Wicket-internal mechanism to dynamically
register my own AJAX endpoint ?
You can do something like this:
AbstractDefaultAjaxBehavior beh = new AbstractDefaultAjaxBehavior() {
@Override public void onRequest(AjaxRequestTarget target) { ... }
}
component.add(beh);
component.add(AttributeModifier.replace("data-my-special-attribute",
beh.getCallbackUrl()));
and then in your JS code: var url =
$('#compontId').data('my-special-attribute');
Thanks in advance,
Tobias
--
Tobias Gierke
Development
VOIPFUTURE GmbH Wendenstraße 4 20097 Hamburg, Germany
Phone +49 40 688 900 164 Fax +49 40 688 900 199
Email [email protected] Web http://www.voipfuture.com
CEO Jan Bastian
Commercial Court AG Hamburg HRB 109896, VAT ID DE263738086
