/*
* $Id: StylesheetRenderer.java 471754 2006-11-06 14:55:09Z husted $
*
* 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.struts.faces.renderer;
import java.io.IOException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* <p><code>Renderer</code> implementation for the <code>stylesheet</code> tag
* from the <em>Struts-Faces Integration Library</em>.</p>
*
* @version $Rev: 471754 $ $Date: 2006-11-06 15:55:09 +0100 (Lun, 06 nov 2006) $
*/
public class StylesheetRenderer extends AbstractRenderer {
// -------------------------------------------------------- Static Variables
/**
* <p>The <code>Log</code> instance for this class.</p>
*/
private static Log log = LogFactory.getLog(StylesheetRenderer.class);
// ---------------------------------------------------------- Public Methods
/**
* <p>Render a relative HTML <code><link></code> element for a
* <code>text/css</code> stylesheet at the specified context-relative
* path.</p>
*
* @param context FacesContext for the request we are processing
* @param component UIComponent to be rendered
*
* @exception IOException if an input/output error occurs while rendering
* @exception NullPointerException if <code>context</code>
* or <code>component</code> is <code>null</code>
*/
public void encodeEnd(FacesContext context, UIComponent component)
throws IOException {
if ((context == null) || (component == null)) {
throw new NullPointerException();
}
ResponseWriter writer = context.getResponseWriter();
writer.startElement("link", component);
writer.writeAttribute("rel", "stylesheet", null);
writer.writeAttribute("type", "text/css", null);
writer.writeURIAttribute
("href",
context.getExternalContext().getRequestContextPath() +
(String) component.getAttributes().get("path"), "path");
writer.endElement("link");
writer.writeText("\n", null);
}
// ------------------------------------------------------- Protected Methods
}