/*
* 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.custom.sortheader;
import java.io.IOException;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import org.apache.myfaces.component.UserRoleUtils;
import org.apache.myfaces.component.html.ext.HtmlDataTable;
import org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils;
import org.apache.myfaces.renderkit.html.ext.HtmlLinkRenderer;
/**
* @author Manfred Geiler (latest modification by $Author: grantsmith $)
* @version $Revision: 472638 $ $Date: 2006-11-08 21:54:13 +0100 (Mi, 08 Nov 2006) $
* $Log: HtmlSortHeaderRenderer.java,v $
* Revision 1.6 2004/10/13 11:50:58 matze
* renamed packages to org.apache
*
* Revision 1.5 2004/07/01 21:53:10 mwessendorf
* ASF switch
*
* Revision 1.4 2004/06/04 12:10:35 royalts
* added check on isArrow
*
* Revision 1.3 2004/05/18 14:31:38 manolito
* user role support completely moved to components source tree
*
* Revision 1.2 2004/04/22 09:20:55 manolito
* derive from HtmlLinkRendererBase instead of HtmlLinkRenderer
*
*/
public class HtmlSortHeaderRenderer
extends HtmlLinkRenderer
{
private static final String FACET_ASCENDING = "ascending";
private static final String FACET_DESCENDING = "descending";
//private static final Log log = LogFactory.getLog(HtmlSortHeaderRenderer.class);
public void encodeEnd(FacesContext facesContext, UIComponent component) throws IOException
{
RendererUtils.checkParamValidity(facesContext, component, HtmlCommandSortHeader.class);
if (UserRoleUtils.isEnabledOnUserRole(component))
{
HtmlCommandSortHeader sortHeader = (HtmlCommandSortHeader)component;
HtmlDataTable dataTable = sortHeader.findParentDataTable();
if (sortHeader.getColumnName().equals(dataTable.getSortColumn()))
{
UIComponent img = (dataTable.isSortAscending())
? sortHeader.getFacet(FACET_ASCENDING)
: sortHeader.getFacet(FACET_DESCENDING);
// render directional image
if (img != null)
{
RendererUtils.renderChild(facesContext, img);
}
// render directional character
if (sortHeader.isArrow())
{
ResponseWriter writer = facesContext.getResponseWriter();
writer.write((dataTable.isSortAscending()) ? "↑" : "↓");
}
}
}
super.encodeEnd(facesContext, component);
}
}