How to extend AjaxBehaviorEvent dispatched from #FacesComponent? - jsf

Question

When I dispatch an ajax event from the Composite Component by using <cc:clientBehavior name="chartUpdated" event="change" targets="chartdata"/> I catch it in Facelet page by using <f:ajax event="chartUpdated" listener="#{bean.updateListener}">. And In backing bean I capture event of type AjaxBehaviorEvent.
public void updateListener(AjaxBehaviorEvent event){
...
}
I undertand that I can extend AjaxBehaviorEvent and pass within it object which has been changed. For example, Primefaces's Scheduler uses this approach:
<p:ajax event="eventMove" listener="#{scheduleView.onEventMove}" update="messages" />
And backing bean:
public void onEventMove(ScheduleEntryMoveEvent event) {
FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_INFO, "Event moved", "Day delta:" + event.getDayDelta() + ", Minute delta:" + event.getMinuteDelta());
addMessage(message);
}
Is it possible to achieve the same functionality by using Composite Component together with the #FacesComponent ?
Thank you in advance!

Answer 1

Nice to meet you, again :)
continuing from your previous question:
Override queueEvent() to filter interesting events (changes from specific components) and postpone their enqueue to validation phase to be able to fetch converted & validated values:
#FacesComponent("rangeComponent")
public class RangeComponent extends UIInput implements NamingContainer
{
private final List<AjaxBehaviorEvent> customEvents = new ArrayList<>();
...
#Override
public void queueEvent(FacesEvent event)
{
FacesContext context = getFacesContext();
if(event instanceof AjaxBehaviorEvent)
{
Map<String, String> params = context.getExternalContext().getRequestParameterMap();
String eventName = params.get("javax.faces.behavior.event");
Object eventSource = event.getSource();
if("change".equals(eventName) && (from.equals(eventSource) || to.equals(eventSource)))
{
customEvents.add((AjaxBehaviorEvent) event);
return;
}
}
super.queueEvent(event);
}
#Override
public void validate(FacesContext context)
{
super.validate(context);
if(from.isValid() && to.isValid())
{
for(AjaxBehaviorEvent event : customEvents)
{
SelectEvent selectEvent = new SelectEvent(this, event.getBehavior(), this.getValue());
if(event.getPhaseId().equals(PhaseId.APPLY_REQUEST_VALUES))
{
selectEvent.setPhaseId(PhaseId.PROCESS_VALIDATIONS);
}
else
{
selectEvent.setPhaseId(PhaseId.INVOKE_APPLICATION);
}
super.queueEvent(selectEvent);
}
}
}
...
}
then add the specific event listener to your managed bean:
#ManagedBean
#ViewScoped
public class RangeBean implements Serializable
{
private static final long serialVersionUID = 1L;
private String range = "01/01/2015-31/12/2015";
public void onSelect(SelectEvent event)
{
Messages.addGlobalInfo("[{0}] selected: [{1}]", event.getComponent().getId(), event.getObject());
}
public String getRange()
{
return range;
}
public void setRange(String range)
{
this.range = range;
}
}