/**********************************************************************************
* $URL: https://source.sakaiproject.org/svn/sam/trunk/samigo-app/src/java/org/sakaiproject/tool/assessment/jsf/renderer/DataLineRenderer.java $
* $Id: DataLineRenderer.java 106463 2012-04-02 12:20:09Z david.horwitz@uct.ac.za $
***********************************************************************************
*
* Copyright (c) 2004, 2005, 2006, 2008 The Sakai Foundation
*
* Licensed under the Educational Community 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.opensource.org/licenses/ECL-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.sakaiproject.tool.assessment.jsf.renderer;
import java.io.IOException;
import java.util.Iterator;
import javax.faces.component.UIColumn;
import javax.faces.component.UIComponent;
import javax.faces.component.UIData;
import javax.faces.component.UIOutput;
import javax.faces.component.UIViewRoot;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.render.Renderer;
import org.sakaiproject.tool.assessment.jsf.renderer.util.RendererUtil;
/**
* <p>Description: </p>
* <p>Render a iterated data like a dataTable but without the table.</p>
* <p> Based on example code by from the O'Reilley JSF book. </p>
* <p>Copyright: Copyright (c) 2004</p>
* <p>Organization: Sakai Project</p>
* @author Ed Smiley
* @version $Id: DataLineRenderer.java 106463 2012-04-02 12:20:09Z david.horwitz@uct.ac.za $
*/
public class DataLineRenderer extends Renderer
{
/**
* This component renders its children
* @return true
*/
public boolean getRendersChildren()
{
return true;
}
/**
* This is an output type component.
* @param component
* @return true if UIOutput
*/
public boolean supportsComponentType(UIComponent component)
{
return (component instanceof UIOutput);
}
/**
* no-op
* @param context
* @param component
* @throws IOException
*/
public void encodeBegin(FacesContext context,
UIComponent component) throws IOException
{
;
}
/**
* We put all our processing in the encodeChildren method
* @param context
* @param component
* @throws IOException
*/
public void encodeChildren(FacesContext context, UIComponent component)
throws IOException
{
if (!component.isRendered())
{
return;
}
String clientId = null;
if (component.getId() != null &&
!component.getId().startsWith(UIViewRoot.UNIQUE_ID_PREFIX))
{
clientId = component.getClientId(context);
}
ResponseWriter writer = context.getResponseWriter();
if (clientId != null)
{
writer.startElement("span", component);
writer.writeAttribute("id", clientId, "id");
}
UIData data = (UIData) component;
int first = data.getFirst();
int rows = data.getRows();
// this is a special separator attribute, not supported by UIData
String separator = (String) component.getAttributes().get("separator");
if (separator==null) separator="";
for (int i = first, n = 0; n < rows; i++, n++)
{
data.setRowIndex(i);
if (!data.isRowAvailable())
{
break;
}
// between any two iterations add separator if there is one
if (i!=first) writer.write(separator);
Iterator iter = data.getChildren().iterator();
while (iter.hasNext())
{
UIComponent column = (UIComponent) iter.next();
if (!(column instanceof UIColumn))
{
continue;
}
RendererUtil.encodeRecursive(context, column);
}
}
if (clientId != null)
{
writer.endElement("span");
}
}
/**
* no-op
* @param context
* @param component
* @throws IOException
*/
public void encodeEnd(FacesContext context, UIComponent component)
throws IOException
{
;
}
}