ViewScopeEventListener.java

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package com.sun.faces.application.view;

import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.event.AbortProcessingException;
import javax.faces.event.SystemEvent;
import javax.faces.event.ViewMapListener;

/**
 * The ViewScope event listener.
 *
 * <p> To make it so the UIViewRoot.getViewMap is as independent as possible
 * from implementation specific code we need to get notified when a view map is
 * created or destroyed. This ViewMapListener is registered so we get notified
 * of these events. </p>
 *
 * <p> See jsf-ri-config.xml for the actual registration of this listener. </p>
 */
public class ViewScopeEventListener implements ViewMapListener {

    /**
     * Handle the system event.
     *
     * @param se the system event.
     * @throws AbortProcessingException
     */
    @Override
    public void processEvent(SystemEvent se) throws AbortProcessingException {
        ViewScopeManager.getInstance(FacesContext.getCurrentInstance()).processEvent(se);
    }

    /**
     * Is listener for.
     *
     * @param source the source.
     * @return true if UIViewRoot, false otherwise.
     */
    @Override
    public boolean isListenerForSource(Object source) {
        return (source instanceof UIViewRoot);
    }
}