/**
* License Agreement.
*
* Rich Faces - Natural Ajax for Java Server Faces (JSF)
*
* Copyright (C) 2007 Exadel, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.ajax4jsf.renderkit.html;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.component.UIParameter;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.ajax4jsf.Messages;
import org.ajax4jsf.component.UIMediaOutput;
import org.ajax4jsf.renderkit.RendererBase;
import org.ajax4jsf.renderkit.RendererUtils.HTML;
import org.ajax4jsf.resource.InternetResource;
import org.ajax4jsf.resource.InternetResourceBuilder;
/**
* @author shura
*
*/
public class MediaOutputRenderer extends RendererBase {
public static final String RENDERER_TYPE = "org.ajax4jsf.MMediaRenderer";
/**
* Associationd between element name and uri attributes
*/
private static final Map uriAttributes;
static {
uriAttributes = new HashMap();
uriAttributes.put("a","href");
uriAttributes.put("img","src");
uriAttributes.put("object","data");
uriAttributes.put("link","href");
}
/* (non-Javadoc)
* @see org.ajax4jsf.renderkit.RendererBase#doEncodeEnd(javax.faces.context.ResponseWriter, javax.faces.context.FacesContext, javax.faces.component.UIComponent)
*/
protected void doEncodeEnd(ResponseWriter writer, FacesContext context, UIComponent component) throws IOException {
UIMediaOutput mmedia = (UIMediaOutput) component;
String element = mmedia.getElement();
if(null == element){
throw new FacesException(Messages.getMessage(Messages.NULL_ATTRIBUTE_ERROR,"element",component.getClientId(context)));
}
writer.endElement(element);
}
/* (non-Javadoc)
* @see org.ajax4jsf.renderkit.RendererBase#getComponentClass()
*/
protected Class getComponentClass() {
// TODO Auto-generated method stub
return UIMediaOutput.class;
}
/* (non-Javadoc)
* @see org.ajax4jsf.renderkit.RendererBase#doEncodeBegin(javax.faces.context.ResponseWriter, javax.faces.context.FacesContext, javax.faces.component.UIComponent)
*/
protected void doEncodeBegin(ResponseWriter writer, FacesContext context, UIComponent component) throws IOException {
UIMediaOutput mmedia = (UIMediaOutput) component;
String element = mmedia.getElement();
if(null == element){
throw new FacesException(Messages.getMessage(Messages.NULL_ATTRIBUTE_ERROR,"element",component.getClientId(context)));
}
String uriAttribute = mmedia.getUriAttribute();
// Check for pre-defined attributes
if(null == uriAttribute){
uriAttribute = (String) uriAttributes.get(element);
if(null == uriAttribute){
throw new FacesException(Messages.getMessage(Messages.NULL_ATTRIBUTE_ERROR,"uriAttribute",component.getClientId(context)));
}
}
writer.startElement(element,mmedia);
getUtils().encodeId(context,component);
InternetResourceBuilder internetResourceBuilder = InternetResourceBuilder.getInstance();
InternetResource resource = internetResourceBuilder.createUserResource(mmedia.isCacheable(),mmedia.isSession(),mmedia.getMimeType());
StringBuffer uri = new StringBuffer(resource.getUri(context,mmedia));
// Append parameters to resource Uri
boolean haveQestion = uri.indexOf("?")>=0;
Iterator kids = component.getChildren().iterator();
while (kids.hasNext()) {
UIComponent kid = (UIComponent) kids.next();
if (kid instanceof UIParameter) {
UIParameter uiParam = (UIParameter) kid;
String name = uiParam.getName();
Object value = uiParam.getValue();
if(null != value){
if(haveQestion){
uri.append('&');
} else {
uri.append('?');
haveQestion = true;
}
uri.append(name).append('=').append(value.toString());
}
}
}
writer.writeURIAttribute(uriAttribute,uri,"uri");
getUtils().encodeAttributesFromArray(context,component,HTML.PASS_THRU_STYLES);
getUtils().encodePassThru(context,mmedia);
}
}