/*
* Copyright 2004 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.myfaces.renderkit.html;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils;
import org.apache.myfaces.shared_impl.renderkit.html.HtmlResponseWriterImpl;
import javax.faces.context.ResponseStream;
import javax.faces.context.ResponseWriter;
import javax.faces.render.RenderKit;
import javax.faces.render.Renderer;
import javax.faces.render.ResponseStateManager;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;
import java.util.HashMap;
import java.util.Map;
/**
* @author Manfred Geiler (latest modification by $Author: baranda $)
* @version $Revision: 542009 $ $Date: 2007-05-27 19:46:22 +0200 (So, 27 Mai 2007) $
*/
public class HtmlRenderKitImpl
extends RenderKit
{
private static final Log log = LogFactory.getLog(HtmlRenderKitImpl.class);
//~ Instance fields ----------------------------------------------------------------------------
private Map<String, Renderer> _renderers;
private ResponseStateManager _responseStateManager;
//~ Constructors -------------------------------------------------------------------------------
public HtmlRenderKitImpl()
{
_renderers = new HashMap<String, Renderer>();
_responseStateManager = new HtmlResponseStateManager();
}
//~ Methods ------------------------------------------------------------------------------------
private String key(String componentFamily, String rendererType)
{
return componentFamily + "." + rendererType;
}
public Renderer getRenderer(String componentFamily, String rendererType)
{
if(componentFamily == null)
{
throw new NullPointerException("component family must not be null.");
}
if(rendererType == null)
{
throw new NullPointerException("renderer type must not be null.");
}
Renderer renderer = _renderers.get(key(componentFamily, rendererType));
if (renderer == null)
{
log.warn("Unsupported component-family/renderer-type: " + componentFamily + "/" + rendererType);
}
return renderer;
}
public void addRenderer(String componentFamily, String rendererType, Renderer renderer)
{
if(componentFamily == null)
{
log.error("addRenderer: componentFamily = null is not allowed");
throw new NullPointerException("component family must not be null.");
}
if(rendererType == null)
{
log.error("addRenderer: rendererType = null is not allowed");
throw new NullPointerException("renderer type must not be null.");
}
if(renderer == null)
{
log.error("addRenderer: renderer = null is not allowed");
throw new NullPointerException("renderer must not be null.");
}
String rendererKey = key(componentFamily, rendererType);
if (_renderers.get(rendererKey) != 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.debug("Overwriting renderer with family = " + componentFamily +
" rendererType = " + rendererType +
" renderer class = " + renderer.getClass().getName());
}
_renderers.put(rendererKey, renderer);
if (log.isTraceEnabled())
log.trace("add Renderer family = " + componentFamily +
" rendererType = " + rendererType +
" renderer class = " + renderer.getClass().getName());
}
public ResponseStateManager getResponseStateManager()
{
return _responseStateManager;
}
public ResponseWriter createResponseWriter(Writer writer,
String contentTypeListString,
String characterEncoding)
{
String selectedContentType = HtmlRendererUtils.selectContentType(contentTypeListString);
if(characterEncoding==null)
{
characterEncoding = HtmlRendererUtils.DEFAULT_CHAR_ENCODING;
}
return new HtmlResponseWriterImpl(writer, selectedContentType, characterEncoding);
}
public ResponseStream createResponseStream(OutputStream outputStream)
{
final OutputStream output = outputStream;
return new ResponseStream()
{
public void write(int b) throws IOException
{
output.write(b);
}
public void write(byte b[]) throws IOException
{
output.write(b);
}
public void write(byte b[], int off, int len) throws IOException
{
output.write(b, off, len);
}
public void flush() throws IOException
{
output.flush();
}
public void close() throws IOException
{
output.close();
}
};
}
}