I am trying to insert a popup which has to be lazy-loaded when clicking a h:commandButton
. I insert its content via ui:include
. However the preRenderView
method is not being fired and the PopupPageModel model
property is not being initialized so I get a NullPointerException
when trying to invoke the business logic method inside PopupPageController
.
The idea is having separate Model/Controller beans for both pages involved but I am not sure this is the correct approach, so I would like to know other approaches or the correct way to implement mine.
Thanks in advance.
Invoking page:
<h:commandButton
value="#{msg['jsf.thisScreen.someText']}">
<f:param name="theParameter" value="#{InvokingScreenModel.theParameter}" />
<rich:componentControl target="myPopup" operation="show" />
</h:commandButton>
<rich:popupPanel id="myPopup" modal="true" resizeable="false" autosized="true"
onmaskclick="#{rich:component('myPopup')}.hide()">
<f:facet name="header">
<h:outputText value="#{msg['jsf.anotherScreen.someText']}" />
</f:facet>
<f:facet name="controls">
<h:outputLink value="#" onclick="#{rich:component('myPopup')}.hide(); return false;"></h:outputLink>
</f:facet>
<ui:include src="popupPage.xhtml" />
</rich:popupPanel>
Popup page:
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:rich="http://richfaces.org/rich"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:c="http://java.sun.com/jsf/core">
<f:metadata>
<f:viewParam name="theParameter"
value="#{PopupPageModel.theParameter}" />
<f:event type="preRenderView"
listener="#{PopupPageController.initialize}" />
</f:metadata>
<h:form id="someForm">
//Some things here
</h:form>
</ui:composition>
Popup page controller
@Component("PopupPageController")
@Scope("request")
public class PopupPageController {
@Autowired
private PopupPageModel model;
@Autowired
private SomeService service;
public void initialize(){
if (!FacesContext.getCurrentInstance().isPostback()) {
//Change some model properties via service methods
}
}
public void doSomething() {
}
}
I've been struggling with this for several days and I've been unable to find a lazy-loading solution for the popup so I'm posting a solution I managed to do that doesn't include this feature just in case it's useful for someone.
Invoking page extract
<h:form>
<a4j:outputPanel id="stuffDetails">
//Some ajax-rendered tabs and accordions above the button
.....
.....
<a4j:commandButton
value="Open Popup"
actionListener="#{PopupController.someInitializationListenerMethod}"
oncomplete="#{rich:component('thePopup')}.show();"
render="formPopup">
</a4j:commandButton>
</a4j:outputPanel>
</h:form>
<rich:popupPanel id="thePopup" modal="true"
resizeable="false" autosized="true"
onmaskclick="#{rich:component('thePopup')}.hide();">
<f:facet name="header">
<h:outputText value="Some header here" />
</f:facet>
<f:facet name="controls">
<h:outputLink value="#"
onclick="#{rich:component('thePopup')}.hide(); return false;">
</h:outputLink>
</f:facet>
<h:form id="formPopup">
<ui:include src="popup.xhtml" />
</h:form>
</rich:popupPanel>
popup.xhtml
<?xml version="1.0" encoding="ISO-8859-1" standalone="yes" ?>
<html>
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:rich="http://richfaces.org/rich"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:c="http://java.sun.com/jsf/core">
//Some controls shown inside the popup
......
......
<a4j:commandButton value="Process data and close popup"
actionListener="#{PopupController.someProcessingMethod}"
render=":stuffDetails :formPopup"
oncomplete="#{rich:component('thePopup')}.hide();" />
<h:commandButton value="Cancel"
onclick="#{rich:component('thePopup')}.hide(); return false;" />
</ui:composition>
</html>
The render=":stuffDetails :formPopup"
in popup.xhtml
is to avoid the infamous JSF spec issue 790 described by BalusC here and here.
Any suggestions welcome.