org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlImageRendererBase Maven / Gradle / Ivy
/*
* 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.shared_tomahawk.renderkit.html;
import java.io.IOException;
import javax.faces.component.UIComponent;
import javax.faces.component.UIGraphic;
import javax.faces.component.html.HtmlGraphicImage;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.myfaces.shared_tomahawk.renderkit.JSFAttr;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HTML;
/**
* @author Manfred Geiler (latest modification by $Author: grantsmith $)
* @author Thomas Spiegl
* @author Anton Koinov
* @version $Revision$ $Date: 2005-05-11 18:45:06 +0200 (Wed, 11 May 2005) $
*/
public class HtmlImageRendererBase
extends HtmlRenderer
{
private static final Log log = LogFactory.getLog(HtmlImageRendererBase.class);
public void encodeEnd(FacesContext facesContext, UIComponent uiComponent)
throws IOException
{
org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils.checkParamValidity(facesContext, uiComponent, UIGraphic.class);
ResponseWriter writer = facesContext.getResponseWriter();
String url;
if (uiComponent instanceof HtmlGraphicImage)
{
url = ((HtmlGraphicImage)uiComponent).getUrl();
}
else
{
url = (String)uiComponent.getAttributes().get(JSFAttr.URL_ATTR);
}
writer.startElement(HTML.IMG_ELEM, uiComponent);
HtmlRendererUtils.writeIdIfNecessary(writer, uiComponent, facesContext);
if ((url != null) && (url.length() > 0))
{
String src = facesContext.getApplication()
.getViewHandler().getResourceURL(facesContext, url);
writer.writeURIAttribute(HTML.SRC_ATTR,
facesContext.getExternalContext().encodeResourceURL(src),
null);
}
else
{
if (log.isWarnEnabled()) log.warn("Graphic with id " + uiComponent.getClientId(facesContext) + " has no value (url).");
}
/*
* Warn the user if the ALT attribute is missing.
*/
if (uiComponent.getAttributes().get(HTML.ALT_ATTR) == null)
{
log.warn("ALT attribute is missing for : " + uiComponent.getId());
}
HtmlRendererUtils.renderHTMLAttributes(writer, uiComponent, HTML.IMG_PASSTHROUGH_ATTRIBUTES);
writer.endElement(org.apache.myfaces.shared_tomahawk.renderkit.html.HTML.IMG_ELEM);
}
}