impl/src/main/java/org/apache/myfaces/renderkit/html/HtmlRenderKitImpl.java - myfaces - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you 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.myfaces.renderkit.html;

 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.Writer;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.Map;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.logging.Level;
 import java.util.logging.Logger;

 import jakarta.faces.context.FacesContext;
 import jakarta.faces.context.ResponseStream;
 import jakarta.faces.context.ResponseWriter;
 import jakarta.faces.render.ClientBehaviorRenderer;
 import jakarta.faces.render.RenderKit;
 import jakarta.faces.render.Renderer;
 import jakarta.faces.render.RendererWrapper;
 import jakarta.faces.render.ResponseStateManager;

 import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFRenderKit;
 import org.apache.myfaces.renderkit.LazyRenderKit;
 import org.apache.myfaces.config.MyfacesConfig;
 import org.apache.myfaces.renderkit.ContentTypeUtils;
 import org.apache.myfaces.core.api.shared.lang.Assert;
 import org.apache.myfaces.util.lang.ClassUtils;

 /**
  * @author Manfred Geiler (latest modification by $Author$)
  * @version $Revision$ $Date$
  */
 @JSFRenderKit(renderKitId = "HTML_BASIC")
 public class HtmlRenderKitImpl extends RenderKit implements LazyRenderKit
 {
     private static final Logger log = Logger.getLogger(HtmlRenderKitImpl.class.getName());

     // ~ Instance fields ----------------------------------------------------------------------------

     private Map<String, Map<String, Renderer>> _renderers;
     private ResponseStateManager _responseStateManager;
     private Map<String, ClientBehaviorRenderer> _clientBehaviorRenderers;
     private MyfacesConfig myfacesConfig;

     // ~ Constructors -------------------------------------------------------------------------------

     public HtmlRenderKitImpl()
     {
         _renderers = new ConcurrentHashMap<>(64, 0.75f, 1);
         _responseStateManager = new HtmlResponseStateManager();
         _clientBehaviorRenderers = new HashMap<>();
         myfacesConfig = MyfacesConfig.getCurrentInstance();
     }

     // ~ Methods ------------------------------------------------------------------------------------

     @Override
     public void addClientBehaviorRenderer(String type, ClientBehaviorRenderer renderer)
     {
         Assert.notNull(type, "type");
         Assert.notNull(renderer, "renderer");

         _clientBehaviorRenderers.put(type, renderer);
     }

     @Override
     public ClientBehaviorRenderer getClientBehaviorRenderer(String type)
     {
         Assert.notNull(type, "type");

         return _clientBehaviorRenderers.get(type);
     }

     @Override
     public Iterator<String> getClientBehaviorRendererTypes()
     {
         return _clientBehaviorRenderers.keySet().iterator();
     }

     @Override
     public Renderer getRenderer(String componentFamily, String rendererType)
     {
         Assert.notNull(componentFamily, "componentFamily");
         Assert.notNull(rendererType, "rendererType");

         Map <String,Renderer> familyRendererMap = _renderers.get(componentFamily);
         Renderer renderer = null;
         if (familyRendererMap != null)
         {
             renderer = familyRendererMap.get(rendererType);
         }
         if (renderer == null)
         {
             log.warning("Unsupported component-family/renderer-type: " + componentFamily + '/' + rendererType);
         }
         if (renderer instanceof LazyRendererWrapper)
         {
             renderer = ((LazyRendererWrapper)renderer).getWrapped();
             familyRendererMap.put(rendererType, renderer);
         }
         return renderer;
     }

     @Override
     public void addRenderer(String componentFamily, String rendererType, Renderer renderer)
     {
         Assert.notNull(componentFamily, "componentFamily");
         Assert.notNull(rendererType, "rendererType");
         Assert.notNull(renderer, "renderer");

         _put(componentFamily, rendererType, renderer);

         if (log.isLoggable(Level.FINEST))
         {
             log.finest("add Renderer family = " + componentFamily + " rendererType = " + rendererType
                     + " renderer class = " + renderer.getClass().getName());
         }
     }

     @Override
     public void addRenderer(String componentFamily, String rendererType, String rendererClass)
     {
         Assert.notNull(componentFamily, "componentFamily");
         Assert.notNull(rendererType, "rendererType");
         Assert.notNull(rendererClass, "rendererClass");

         _put(componentFamily, rendererType, new LazyRendererWrapper(rendererClass));

         if (log.isLoggable(Level.FINEST))
         {
             log.finest("add Renderer family = " + componentFamily + " rendererType = " + rendererType
                     + " renderer class = " + rendererClass);
         }
     }

     /**
      * Put the renderer on the double map
      *
      * @param componentFamily
      * @param rendererType
      * @param renderer
      */
     synchronized private void _put(String componentFamily, String rendererType, Renderer renderer)
     {
         Map <String,Renderer> familyRendererMap = _renderers.get(componentFamily);
         if (familyRendererMap == null)
         {
             familyRendererMap = new ConcurrentHashMap<>(8, 0.75f, 1);
             _renderers.put(componentFamily, familyRendererMap);
         }
         else
         {
             if (familyRendererMap.get(rendererType) != null)
             {
                 // this is not necessarily an error, but users do need to be
                 // very careful about jar processing order when overriding
                 // some component's renderer with an alternate renderer.
                 log.fine("Overwriting renderer with family = " + componentFamily +
                    " rendererType = " + rendererType +
                    " renderer class = " + renderer.getClass().getName());
             }
         }
         familyRendererMap.put(rendererType, renderer);
     }

     @Override
     public ResponseStateManager getResponseStateManager()
     {
         return _responseStateManager;
     }

     /**
      * @since JSF 2.0
      */
     @Override
     public Iterator<String> getComponentFamilies()
     {
         //return _families.keySet().iterator();
         return _renderers.keySet().iterator();
     }

     /**
      * @since JSF 2.0
      */
     @Override
     public Iterator<String> getRendererTypes(String componentFamily)
     {
         //Return an Iterator over the renderer-type entries for the given component-family.
         Map<String, Renderer> map = _renderers.get(componentFamily);
         if (map != null)
         {
             return map.keySet().iterator();
         }

         //If the specified componentFamily is not known to this RenderKit implementation, return an empty Iterator
         return Collections.<String>emptySet().iterator();
     }

     @Override
     public ResponseWriter createResponseWriter(Writer writer, String contentTypeListString, String characterEncoding)
     {
         FacesContext facesContext = FacesContext.getCurrentInstance();
         String selectedContentType = null;
         String writerContentType = null;
         boolean isAjaxRequest = facesContext.getPartialViewContext().isAjaxRequest();
         String contentTypeListStringFromAccept = null;

         // To detect the right contentType, we need to check if the request is an ajax request or not.
         // If it is an ajax request, HTTP Accept header content type will be set for the ajax itself, which
         // is application/xml or text/xml. In that case, there are two response writers
         // (PartialResponseWriterImpl and HtmlResponseWriterImpl),

         //1. if there is a passed contentTypeListString, it takes precedence over accept header
         if (contentTypeListString != null)
         {
             selectedContentType = ContentTypeUtils.chooseWriterContentType(contentTypeListString,
                     ContentTypeUtils.HTML_ALLOWED_CONTENT_TYPES,
                     isAjaxRequest ? ContentTypeUtils.AJAX_XHTML_ALLOWED_CONTENT_TYPES :
                                     ContentTypeUtils.XHTML_ALLOWED_CONTENT_TYPES);
         }

         //2. If no selectedContentType
         //   try to derive it from accept header
         if (selectedContentType == null)
         {
             contentTypeListStringFromAccept =
                 ContentTypeUtils.getContentTypeFromAcceptHeader(facesContext);

             if (contentTypeListStringFromAccept != null)
             {
                 selectedContentType = ContentTypeUtils.chooseWriterContentType(contentTypeListStringFromAccept,
                         ContentTypeUtils.HTML_ALLOWED_CONTENT_TYPES,
                         isAjaxRequest ? ContentTypeUtils.AJAX_XHTML_ALLOWED_CONTENT_TYPES :
                                         ContentTypeUtils.XHTML_ALLOWED_CONTENT_TYPES);
             }
         }

         //3. if no selectedContentType was derived, set default from the param
         if (selectedContentType == null)
         {
             if (contentTypeListString == null && contentTypeListStringFromAccept == null)
             {
                 //If no contentTypeList, return the default
                 selectedContentType = myfacesConfig.getDefaultResponseWriterContentTypeMode();
             }
             else
             {
                 // If a contentTypeList was passed and we don't have direct matches, we still need
                 // to check if */* is found and if that so return the default, otherwise throw
                 // exception.
                 if (contentTypeListString != null)
                 {
                     String[] contentTypes = ContentTypeUtils.splitContentTypeListString(contentTypeListString);
                     if (ContentTypeUtils.containsContentType(ContentTypeUtils.ANY_CONTENT_TYPE, contentTypes))
                     {
                         selectedContentType = myfacesConfig.getDefaultResponseWriterContentTypeMode();
                     }
                 }

                 if (selectedContentType == null)
                 {
                     if (contentTypeListStringFromAccept != null)
                     {
                         String[] contentTypes = ContentTypeUtils.splitContentTypeListString(
                                 contentTypeListStringFromAccept);
                         if (ContentTypeUtils.containsContentType(ContentTypeUtils.ANY_CONTENT_TYPE, contentTypes))
                         {
                             selectedContentType = myfacesConfig.getDefaultResponseWriterContentTypeMode();
                         }
                     }
                     else if (isAjaxRequest)
                     {
                         // If is an ajax request, contentTypeListStringFromAccept == null and
                         // contentTypeListString != null, contentTypeListString should not be taken
                         // into account, because the final content type in this case is for PartialResponseWriter
                         // implementation. In this case rfc2616-sec14 takes precedence:
                         //
                         // http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
                         // 14.1 Accept
                         // If no Accept header field is present, then it is assumed that the client
                         // accepts all media types.
                         selectedContentType = myfacesConfig.getDefaultResponseWriterContentTypeMode();
                     }
                     if (selectedContentType == null)
                     {
                         // Note this case falls when contentTypeListStringFromAccept == null and
                         // contentTypeListString != null, but since this not an ajax request,
                         // contentTypeListString should be taken strictly and throw IllegalArgumentException
                         throw new IllegalArgumentException(
                                 "ContentTypeList does not contain a supported content type: "
                                         + ((contentTypeListString != null) ?
                                                 contentTypeListString : contentTypeListStringFromAccept) );
                     }
                 }
             }
         }
         if (isAjaxRequest)
         {
             // If HTTP Accept header has application/xml or text/xml, that does not means the writer
             // content type mode should be set to application/xhtml+xml.
             writerContentType = selectedContentType.contains(ContentTypeUtils.XHTML_CONTENT_TYPE) ?
                     ContentTypeUtils.XHTML_CONTENT_TYPE : ContentTypeUtils.HTML_CONTENT_TYPE;
         }
         else
         {
             writerContentType = ContentTypeUtils.isXHTMLContentType(selectedContentType) ?
                     ContentTypeUtils.XHTML_CONTENT_TYPE : ContentTypeUtils.HTML_CONTENT_TYPE;
         }

         if (characterEncoding == null)
         {
             characterEncoding = ContentTypeUtils.DEFAULT_CHAR_ENCODING;
         }

         if (myfacesConfig.isEarlyFlushEnabled())
         {
             return new EarlyFlushHtmlResponseWriterImpl(writer, selectedContentType, characterEncoding,
                 myfacesConfig.isWrapScriptContentWithXmlCommentTag(), writerContentType);
         }
         else
         {
             return new HtmlResponseWriterImpl(writer, selectedContentType, characterEncoding,
                 myfacesConfig.isWrapScriptContentWithXmlCommentTag(), writerContentType);
         }
     }

     @Override
     public ResponseStream createResponseStream(OutputStream outputStream)
     {
         return new MyFacesResponseStream(outputStream);
     }

     private static class MyFacesResponseStream extends ResponseStream
     {
         private OutputStream output;

         public MyFacesResponseStream(OutputStream output)
         {
             this.output = output;
         }

         @Override
         public void write(int b) throws IOException
         {
             output.write(b);
         }

         @Override
         public void write(byte b[]) throws IOException
         {
             output.write(b);
         }

         @Override
         public void write(byte b[], int off, int len) throws IOException
         {
             output.write(b, off, len);
         }

         @Override
         public void flush() throws IOException
         {
             output.flush();
         }

         @Override
         public void close() throws IOException
         {
             output.close();
         }
     }

     private static class LazyRendererWrapper extends RendererWrapper
     {
         private String rendererClass;
         private Renderer delegate;

         public LazyRendererWrapper(String rendererClass)
         {
             this.rendererClass = rendererClass;
         }

         @Override
         public Renderer getWrapped()
         {
             if (delegate == null)
             {
                 delegate = (Renderer) ClassUtils.newInstance(
                     ClassUtils.simpleClassForName(rendererClass));
             }
             return delegate;
         }
     }
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one
	* or more contributor license agreements. See the NOTICE file
	* distributed with this work for additional information
	* regarding copyright ownership. The ASF licenses this file
	* to you 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.myfaces.renderkit.html;

	import java.io.IOException;
	import java.io.OutputStream;
	import java.io.Writer;
	import java.util.Collections;
	import java.util.HashMap;
	import java.util.Iterator;
	import java.util.Map;
	import java.util.concurrent.ConcurrentHashMap;
	import java.util.logging.Level;
	import java.util.logging.Logger;

	import jakarta.faces.context.FacesContext;
	import jakarta.faces.context.ResponseStream;
	import jakarta.faces.context.ResponseWriter;
	import jakarta.faces.render.ClientBehaviorRenderer;
	import jakarta.faces.render.RenderKit;
	import jakarta.faces.render.Renderer;
	import jakarta.faces.render.RendererWrapper;
	import jakarta.faces.render.ResponseStateManager;

	import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFRenderKit;
	import org.apache.myfaces.renderkit.LazyRenderKit;
	import org.apache.myfaces.config.MyfacesConfig;
	import org.apache.myfaces.renderkit.ContentTypeUtils;
	import org.apache.myfaces.core.api.shared.lang.Assert;
	import org.apache.myfaces.util.lang.ClassUtils;

	/**
	* @author Manfred Geiler (latest modification by $Author$)
	* @version $Revision$ $Date$
	*/
	@JSFRenderKit(renderKitId = "HTML_BASIC")
	public class HtmlRenderKitImpl extends RenderKit implements LazyRenderKit
	{
	private static final Logger log = Logger.getLogger(HtmlRenderKitImpl.class.getName());

	// ~ Instance fields ----------------------------------------------------------------------------

	private Map<String, Map<String, Renderer>> _renderers;
	private ResponseStateManager _responseStateManager;
	private Map<String, ClientBehaviorRenderer> _clientBehaviorRenderers;
	private MyfacesConfig myfacesConfig;

	// ~ Constructors -------------------------------------------------------------------------------

	public HtmlRenderKitImpl()
	{
	_renderers = new ConcurrentHashMap<>(64, 0.75f, 1);
	_responseStateManager = new HtmlResponseStateManager();
	_clientBehaviorRenderers = new HashMap<>();
	myfacesConfig = MyfacesConfig.getCurrentInstance();
	}

	// ~ Methods ------------------------------------------------------------------------------------

	@Override
	public void addClientBehaviorRenderer(String type, ClientBehaviorRenderer renderer)
	{
	Assert.notNull(type, "type");
	Assert.notNull(renderer, "renderer");

	_clientBehaviorRenderers.put(type, renderer);
	}

	@Override
	public ClientBehaviorRenderer getClientBehaviorRenderer(String type)
	{
	Assert.notNull(type, "type");

	return _clientBehaviorRenderers.get(type);
	}

	@Override
	public Iterator<String> getClientBehaviorRendererTypes()
	{
	return _clientBehaviorRenderers.keySet().iterator();
	}

	@Override
	public Renderer getRenderer(String componentFamily, String rendererType)
	{
	Assert.notNull(componentFamily, "componentFamily");
	Assert.notNull(rendererType, "rendererType");

	Map <String,Renderer> familyRendererMap = _renderers.get(componentFamily);
	Renderer renderer = null;
	if (familyRendererMap != null)
	{
	renderer = familyRendererMap.get(rendererType);
	}
	if (renderer == null)
	{
	log.warning("Unsupported component-family/renderer-type: " + componentFamily + '/' + rendererType);
	}
	if (renderer instanceof LazyRendererWrapper)
	{
	renderer = ((LazyRendererWrapper)renderer).getWrapped();
	familyRendererMap.put(rendererType, renderer);
	}
	return renderer;
	}

	@Override
	public void addRenderer(String componentFamily, String rendererType, Renderer renderer)
	{
	Assert.notNull(componentFamily, "componentFamily");
	Assert.notNull(rendererType, "rendererType");
	Assert.notNull(renderer, "renderer");

	_put(componentFamily, rendererType, renderer);

	if (log.isLoggable(Level.FINEST))
	{
	log.finest("add Renderer family = " + componentFamily + " rendererType = " + rendererType
	+ " renderer class = " + renderer.getClass().getName());
	}
	}

	@Override
	public void addRenderer(String componentFamily, String rendererType, String rendererClass)
	{
	Assert.notNull(componentFamily, "componentFamily");
	Assert.notNull(rendererType, "rendererType");
	Assert.notNull(rendererClass, "rendererClass");

	_put(componentFamily, rendererType, new LazyRendererWrapper(rendererClass));

	if (log.isLoggable(Level.FINEST))
	{
	log.finest("add Renderer family = " + componentFamily + " rendererType = " + rendererType
	+ " renderer class = " + rendererClass);
	}
	}

	/**
	* Put the renderer on the double map
	*
	* @param componentFamily
	* @param rendererType
	* @param renderer
	*/
	synchronized private void _put(String componentFamily, String rendererType, Renderer renderer)
	{
	Map <String,Renderer> familyRendererMap = _renderers.get(componentFamily);
	if (familyRendererMap == null)
	{
	familyRendererMap = new ConcurrentHashMap<>(8, 0.75f, 1);
	_renderers.put(componentFamily, familyRendererMap);
	}
	else
	{
	if (familyRendererMap.get(rendererType) != null)
	{
	// this is not necessarily an error, but users do need to be
	// very careful about jar processing order when overriding
	// some component's renderer with an alternate renderer.
	log.fine("Overwriting renderer with family = " + componentFamily +
	" rendererType = " + rendererType +
	" renderer class = " + renderer.getClass().getName());
	}
	}
	familyRendererMap.put(rendererType, renderer);
	}

	@Override
	public ResponseStateManager getResponseStateManager()
	{
	return _responseStateManager;
	}

	/**
	* @since JSF 2.0
	*/
	@Override
	public Iterator<String> getComponentFamilies()
	{
	//return _families.keySet().iterator();
	return _renderers.keySet().iterator();
	}

	/**
	* @since JSF 2.0
	*/
	@Override
	public Iterator<String> getRendererTypes(String componentFamily)
	{
	//Return an Iterator over the renderer-type entries for the given component-family.
	Map<String, Renderer> map = _renderers.get(componentFamily);
	if (map != null)
	{
	return map.keySet().iterator();
	}

	//If the specified componentFamily is not known to this RenderKit implementation, return an empty Iterator
	return Collections.<String>emptySet().iterator();
	}

	@Override
	public ResponseWriter createResponseWriter(Writer writer, String contentTypeListString, String characterEncoding)
	{
	FacesContext facesContext = FacesContext.getCurrentInstance();
	String selectedContentType = null;
	String writerContentType = null;
	boolean isAjaxRequest = facesContext.getPartialViewContext().isAjaxRequest();
	String contentTypeListStringFromAccept = null;

	// To detect the right contentType, we need to check if the request is an ajax request or not.
	// If it is an ajax request, HTTP Accept header content type will be set for the ajax itself, which
	// is application/xml or text/xml. In that case, there are two response writers
	// (PartialResponseWriterImpl and HtmlResponseWriterImpl),

	//1. if there is a passed contentTypeListString, it takes precedence over accept header
	if (contentTypeListString != null)
	{
	selectedContentType = ContentTypeUtils.chooseWriterContentType(contentTypeListString,
	ContentTypeUtils.HTML_ALLOWED_CONTENT_TYPES,
	isAjaxRequest ? ContentTypeUtils.AJAX_XHTML_ALLOWED_CONTENT_TYPES :
	ContentTypeUtils.XHTML_ALLOWED_CONTENT_TYPES);
	}

	//2. If no selectedContentType
	// try to derive it from accept header
	if (selectedContentType == null)
	{
	contentTypeListStringFromAccept =
	ContentTypeUtils.getContentTypeFromAcceptHeader(facesContext);

	if (contentTypeListStringFromAccept != null)
	{
	selectedContentType = ContentTypeUtils.chooseWriterContentType(contentTypeListStringFromAccept,
	ContentTypeUtils.HTML_ALLOWED_CONTENT_TYPES,
	isAjaxRequest ? ContentTypeUtils.AJAX_XHTML_ALLOWED_CONTENT_TYPES :
	ContentTypeUtils.XHTML_ALLOWED_CONTENT_TYPES);
	}
	}

	//3. if no selectedContentType was derived, set default from the param
	if (selectedContentType == null)
	{
	if (contentTypeListString == null && contentTypeListStringFromAccept == null)
	{
	//If no contentTypeList, return the default
	selectedContentType = myfacesConfig.getDefaultResponseWriterContentTypeMode();
	}
	else
	{
	// If a contentTypeList was passed and we don't have direct matches, we still need
	// to check if / is found and if that so return the default, otherwise throw
	// exception.
	if (contentTypeListString != null)
	{
	String[] contentTypes = ContentTypeUtils.splitContentTypeListString(contentTypeListString);
	if (ContentTypeUtils.containsContentType(ContentTypeUtils.ANY_CONTENT_TYPE, contentTypes))
	{
	selectedContentType = myfacesConfig.getDefaultResponseWriterContentTypeMode();
	}
	}

	if (selectedContentType == null)
	{
	if (contentTypeListStringFromAccept != null)
	{
	String[] contentTypes = ContentTypeUtils.splitContentTypeListString(
	contentTypeListStringFromAccept);
	if (ContentTypeUtils.containsContentType(ContentTypeUtils.ANY_CONTENT_TYPE, contentTypes))
	{
	selectedContentType = myfacesConfig.getDefaultResponseWriterContentTypeMode();
	}
	}
	else if (isAjaxRequest)
	{
	// If is an ajax request, contentTypeListStringFromAccept == null and
	// contentTypeListString != null, contentTypeListString should not be taken
	// into account, because the final content type in this case is for PartialResponseWriter
	// implementation. In this case rfc2616-sec14 takes precedence:
	//
	// http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
	// 14.1 Accept
	// If no Accept header field is present, then it is assumed that the client
	// accepts all media types.
	selectedContentType = myfacesConfig.getDefaultResponseWriterContentTypeMode();
	}
	if (selectedContentType == null)
	{
	// Note this case falls when contentTypeListStringFromAccept == null and
	// contentTypeListString != null, but since this not an ajax request,
	// contentTypeListString should be taken strictly and throw IllegalArgumentException
	throw new IllegalArgumentException(
	"ContentTypeList does not contain a supported content type: "
	+ ((contentTypeListString != null) ?
	contentTypeListString : contentTypeListStringFromAccept) );
	}
	}
	}
	}
	if (isAjaxRequest)
	{
	// If HTTP Accept header has application/xml or text/xml, that does not means the writer
	// content type mode should be set to application/xhtml+xml.
	writerContentType = selectedContentType.contains(ContentTypeUtils.XHTML_CONTENT_TYPE) ?
	ContentTypeUtils.XHTML_CONTENT_TYPE : ContentTypeUtils.HTML_CONTENT_TYPE;
	}
	else
	{
	writerContentType = ContentTypeUtils.isXHTMLContentType(selectedContentType) ?
	ContentTypeUtils.XHTML_CONTENT_TYPE : ContentTypeUtils.HTML_CONTENT_TYPE;
	}

	if (characterEncoding == null)
	{
	characterEncoding = ContentTypeUtils.DEFAULT_CHAR_ENCODING;
	}

	if (myfacesConfig.isEarlyFlushEnabled())
	{
	return new EarlyFlushHtmlResponseWriterImpl(writer, selectedContentType, characterEncoding,
	myfacesConfig.isWrapScriptContentWithXmlCommentTag(), writerContentType);
	}
	else
	{
	return new HtmlResponseWriterImpl(writer, selectedContentType, characterEncoding,
	myfacesConfig.isWrapScriptContentWithXmlCommentTag(), writerContentType);
	}
	}

	@Override
	public ResponseStream createResponseStream(OutputStream outputStream)
	{
	return new MyFacesResponseStream(outputStream);
	}

	private static class MyFacesResponseStream extends ResponseStream
	{
	private OutputStream output;

	public MyFacesResponseStream(OutputStream output)
	{
	this.output = output;
	}

	@Override
	public void write(int b) throws IOException
	{
	output.write(b);
	}

	@Override
	public void write(byte b[]) throws IOException
	{
	output.write(b);
	}

	@Override
	public void write(byte b[], int off, int len) throws IOException
	{
	output.write(b, off, len);
	}

	@Override
	public void flush() throws IOException
	{
	output.flush();
	}

	@Override
	public void close() throws IOException
	{
	output.close();
	}
	}

	private static class LazyRendererWrapper extends RendererWrapper
	{
	private String rendererClass;
	private Renderer delegate;

	public LazyRendererWrapper(String rendererClass)
	{
	this.rendererClass = rendererClass;
	}

	@Override
	public Renderer getWrapped()
	{
	if (delegate == null)
	{
	delegate = (Renderer) ClassUtils.newInstance(
	ClassUtils.simpleClassForName(rendererClass));
	}
	return delegate;
	}
	}
	}