trunk/core/src/main/java/org/apache/struts2/jsf/FacesRender.java

/*
 * $Id$
 *
 * Copyright 2006 The Apache Software Foundation.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.struts2.jsf;

import java.io.IOException;

import javax.faces.FacesException;
import javax.faces.application.Application;
import javax.faces.application.ViewHandler;
import javax.faces.context.FacesContext;
import javax.faces.event.PhaseId;

/**
 * Performs the JSF render lifecycle phase.
 *
 */
public class FacesRender extends FacesSupport {

	/**
     * Executes the render phase, borrowed from MyFaces
     * 
     * @param facesContext
     *            The faces context
     * @throws FacesException
     *             If anything goes wrong
     */
    public void render(FacesContext facesContext) throws FacesException {
        // if the response is complete we should not be invoking the phase
        // listeners
        if (isResponseComplete(facesContext, "render", true)) {
            return;
        }
        if (log.isTraceEnabled())
            log.trace("entering renderResponse");

        informPhaseListenersBefore(facesContext, PhaseId.RENDER_RESPONSE);
        try {
            // also possible that one of the listeners completed the response
            if (isResponseComplete(facesContext, "render", true)) {
                return;
            }
            Application application = facesContext.getApplication();
            ViewHandler viewHandler = application.getViewHandler();
            try {
                viewHandler
                        .renderView(facesContext, facesContext.getViewRoot());
            } catch (IOException e) {
                throw new FacesException(e.getMessage(), e);
            }
        } finally {
            informPhaseListenersAfter(facesContext, PhaseId.RENDER_RESPONSE);
        }
        if (log.isTraceEnabled()) {
            // Note: DebugUtils Logger must also be in trace level
            // DebugUtils.traceView("View after rendering");
        }

        if (log.isTraceEnabled())
            log.trace("exiting renderResponse");
    }
}