PostRenderViewEvent: publising events after view is rendered

JSF 2.3 added a new ComponentSystemEvent, the so-called PostRenderViewEvent, it will be fired after the view is rendered in the RENDER_RESPONSE phase.

Create a sample to taste it.

Firstly create a backing bean.

@Model
public class PostRenderViewBean {

    @Inject
    Logger LOG;

    public void init(PreRenderViewEvent e) {
        LOG.log(Level.INFO, "fire PreRenderViewEvent:" + e);
    }

    public void execute() {
        LOG.log(Level.INFO, "execute viewAction");
    }

    public void initialized(PostRenderViewEvent e) {
        LOG.log(Level.INFO, "fire PostRenderViewEvent:" + e);
    }
}

In the facelets template, use f:event to declare events, and set type to postRenderView and listener to #{postRenderViewBean.initialized}.

<f:metadata>
    <f:event type="preRenderView" listener="#{postRenderViewBean.init}" />
    <f:viewAction action="#{postRenderViewBean.execute}" />
    <f:event type="postRenderView" listener="#{postRenderViewBean.initialized}"/>
</f:metadata>

viewAction was added in Java EE 7, check my Java EE 7 sample for details.

Run this application on Glassfish v5, open browser and navigate to http://localhost:8080/jsf-postrenderview-event/postRenderView.faces;

You will see the info in the IDE console.

Info:   before phase:RESTORE_VIEW 1
Info:   after phase:RESTORE_VIEW 1
Info:   invoking custom ExceptionHandlder...
Info:   before phase:APPLY_REQUEST_VALUES 2
Info:   after phase:APPLY_REQUEST_VALUES 2
Info:   invoking custom ExceptionHandlder...
Info:   before phase:PROCESS_VALIDATIONS 3
Info:   after phase:PROCESS_VALIDATIONS 3
Info:   invoking custom ExceptionHandlder...
Info:   before phase:UPDATE_MODEL_VALUES 4
Info:   after phase:UPDATE_MODEL_VALUES 4
Info:   invoking custom ExceptionHandlder...
Info:   before phase:INVOKE_APPLICATION 5
Info:   execute viewAction
Info:   after phase:INVOKE_APPLICATION 5
Info:   invoking custom ExceptionHandlder...
Info:   before phase:RENDER_RESPONSE 6
Info:   fire PreRenderViewEvent:javax.faces.event.PreRenderViewEvent[source=javax.faces.component.UIViewRoot@248724dd]
Info:   fire PostRenderViewEvent:javax.faces.event.PostRenderViewEvent[source=javax.faces.component.UIViewRoot@248724dd]
Info:   after phase:RENDER_RESPONSE 6
Info:   invoking custom ExceptionHandlder...

The viewAction is executed in INVOKE_APPLICATION phase, and PreRenderViewEvent and PostRenderViewEvent are fired in RENDER_RESPONSE phase.

Grab the source codes from my GitHub account, and have a try.