Hey,
I tried what you mentioned. The condition is never satisfied.
*if (event.getPayload() instanceof YourEvent) *
On Sun, May 26, 2019 at 6:10 PM Francois Meillet <francois.meil...@gmail.com>
wrote:
> Hi Sibgha,
>
> // here is a simple code
>
> //
> // in your Dpanel
> //
> protected void onUpdate(AjaxRequestTarget target) {
> send(getPage(), Broadcast.EXACT, new
> YourEvent(yourDataFromYourDropDownChoice));
> }
>
>
> //
> // in your HomePage, you override the onEvent method
> //
> @Override
> public void onEvent(IEvent<?> event) {
> super.onEvent(event);
>
> if (event.getPayload() instanceof YourEvent) {
>
> YourEvent yourEvent = (YourEvent) = event.getPayload();
> // the data you sent throw your vent
> YourData xyz = yourEvent.getData();
> // if you don't neeed anymore your event
> event.stop();
> }
> }
>
>
> // look at the docs
>
> https://ci.apache.org/projects/wicket/guide/8.x/single.html#_wicket_events_infrastructure
>
>
> François
> follow Apache Wicket on twitter : https://twitter.com/apache_wicket <
> https://twitter.com/apache_wicket> !
>
>
> > Le 26 mai 2019 à 15:33, Sibgha Nazir <sibgha...@gmail.com> a écrit :
> >
> > Hi,
> >
> > In my application, Home Page creates DPanel and Dpanel has the drop down
> > menu. In the class DPanel at 'onchange' event, I want to do some action
> > in the class HomePage.java. How can that be possible?
> >
> >
> > *HomePage.java* public HomePage(final PageParameters parameters)
> > {
> > super(parameters);
> >
> > final Panel dropDownPanel = new Dpanel("toReplace");
> >
> > dropDownPanel.setOutputMarkupId(true);
> > add(dropDownPanel);
> > }
> >
> >
> > *DPanel.java* public Dpanel(String aId)
> > {
> > super(aId);
> > form = new Form<Void>("form");
> > form.setOutputMarkupId(true);
> >
> > // SelectMenu //
> > final DropDownChoice<String> dropdown = new
> > DropDownChoice<String>("select", new Model<String>(), new
> > ListModel<String>(GENRES));
> > dropdown.setRequired(true);
> > dropdown.setOutputMarkupId(true);
> > dropdown.add(new AjaxFormComponentUpdatingBehavior("change") {
> > /**
> > *
> > */
> > private static final long serialVersionUID =
> > -6744838136235652577L;
> >
> > protected void onUpdate(AjaxRequestTarget target) {
> > System.out.println("Changed");
> >
> > }
> > });
> > .
> > .
> > .
> > .
> >
> > Quick Start here...
> > https://github.com/Sibgha360/dropdownexample.git,
>
>
