/*
* 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.renderkit.html.ext;
import java.io.IOException;
import java.util.List;
import javax.faces.FacesException;
import javax.faces.component.UIComponent;
import javax.faces.component.UISelectOne;
import javax.faces.context.FacesContext;
import javax.faces.context.ResponseWriter;
import javax.faces.convert.Converter;
import javax.faces.model.SelectItem;
import org.apache.myfaces.component.UserRoleUtils;
import org.apache.myfaces.custom.radio.HtmlRadio;
import org.apache.myfaces.shared_tomahawk.renderkit.RendererUtils;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HTML;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlRadioRendererBase;
import org.apache.myfaces.shared_tomahawk.renderkit.html.HtmlRendererUtils;
/**
* @author Manfred Geiler (latest modification by $Author: grantsmith $)
* @author Thomas Spiegl
* @version $Revision: 472792 $ $Date: 2006-11-09 07:34:47 +0100 (Do, 09 Nov 2006) $
*/
public class HtmlRadioRenderer
extends HtmlRadioRendererBase
{
//private static final Log log = LogFactory.getLog(HtmlRadioRenderer.class);
private static final String LAYOUT_SPREAD = "spread";
public void encodeEnd(FacesContext context, UIComponent component) throws IOException
{
if (context == null) throw new NullPointerException("context");
if (component == null) throw new NullPointerException("component");
if (component instanceof HtmlRadio)
{
renderRadio(context, (HtmlRadio)component);
}
else if (HtmlRendererUtils.isDisplayValueOnly(component))
{
HtmlRendererUtils.renderDisplayValueOnlyForSelects(context, component);
}
else if (component instanceof UISelectOne)
{
String layout = getLayout(component);
if (layout != null && layout.equals(LAYOUT_SPREAD))
{
return; //radio inputs are rendered by spread radio components
}
else
{
super.encodeEnd(context, component);
}
}
else
{
throw new IllegalArgumentException("Unsupported component class " + component.getClass().getName());
}
}
private void renderRadio(FacesContext facesContext, HtmlRadio radio) throws IOException
{
String forAttr = radio.getFor();
if (forAttr == null)
{
throw new IllegalStateException("mandatory attribute 'for'");
}
int index = radio.getIndex();
if (index < 0)
{
throw new IllegalStateException("positive index must be given");
}
UIComponent uiComponent = radio.findComponent(forAttr);
if (uiComponent == null)
{
throw new IllegalStateException("Could not find component '" + forAttr + "' (calling findComponent on component '" + radio.getClientId(facesContext) + "')");
}
if (!(uiComponent instanceof UISelectOne))
{
throw new IllegalStateException("UISelectOne expected");
}
UISelectOne uiSelectOne = (UISelectOne)uiComponent;
Converter converter;
List selectItemList = RendererUtils.getSelectItemList(uiSelectOne);
if (index >= selectItemList.size())
{
throw new IndexOutOfBoundsException("index " + index + " >= " + selectItemList.size());
}
try
{
converter = RendererUtils.findUIOutputConverter(facesContext, uiSelectOne);
}
catch (FacesException e)
{
converter = null;
}
Object currentValue = RendererUtils.getObjectValue(uiSelectOne);
currentValue
= RendererUtils.getConvertedStringValue(facesContext, uiSelectOne,
converter, currentValue);
SelectItem selectItem = (SelectItem)selectItemList.get(index);
String itemStrValue
= RendererUtils.getConvertedStringValue(facesContext, uiSelectOne,
converter,
selectItem.getValue());
ResponseWriter writer = facesContext.getResponseWriter();
writer.startElement(HTML.LABEL_ELEM, uiSelectOne);
renderRadio(facesContext,
uiSelectOne,
itemStrValue,
selectItem.getLabel(),
selectItem.isDisabled(),
itemStrValue.equals(currentValue), false);
writer.endElement(HTML.LABEL_ELEM);
}
protected boolean isDisabled(FacesContext facesContext, UIComponent uiComponent)
{
if (!UserRoleUtils.isEnabledOnUserRole(uiComponent))
{
return true;
}
else
{
return super.isDisabled(facesContext, uiComponent);
}
}
public void decode(FacesContext facesContext, UIComponent uiComponent)
{
if (uiComponent instanceof HtmlRadio)
{
//nothing to decode
}
else
{
super.decode(facesContext, uiComponent);
}
}
}