PostAddToViewListener.java

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package com.sun.faces.event;

import java.util.Map;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
import javax.faces.component.UIComponent;
import javax.faces.component.html.HtmlInputText;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.PostAddToViewEvent;
import javax.faces.event.SystemEvent;
import javax.faces.event.SystemEventListener;

@ManagedBean
@SessionScoped
public class PostAddToViewListener implements SystemEventListener {

    private boolean installed = false;

    public String getInstallEvent() {
        if (!installed) {
            FacesContext.getCurrentInstance().
                    getApplication().subscribeToEvent(PostAddToViewEvent.class,
                    HtmlInputText.class, this);
            installed = true;
        }

        return "";
    }

    public String getUninstallEvent() {
        FacesContext.getCurrentInstance().
                getApplication().unsubscribeFromEvent(PostAddToViewEvent.class,
                HtmlInputText.class, this);
        installed = false;
        return "";
    }

    public void processEvent(SystemEvent event) throws AbortProcessingException {
        Map<String, Object> requestMap = FacesContext.getCurrentInstance().getExternalContext().getRequestMap();
        requestMap.put("message", event.getClass().getName());

    }

    public boolean isListenerForSource(Object source) {
        return source instanceof HtmlInputText;
    }


}