/*
* Copyright 2005 The Apache Software Foundation.
*
* Licensed 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 javax.faces.component;
import java.util.Arrays;
import java.util.Iterator;
import javax.faces.context.FacesContext;
import javax.faces.model.SelectItem;
import javax.faces.model.SelectItemGroup;
/**
* @author Mathias Broekelmann (latest modification by $Author: mbr $)
* @version $Revision: 511124 $ $Date: 2007-02-23 16:56:42 -0500 (Fri, 23 Feb 2007) $
*/
class _SelectItemsUtil
{
public static interface _ValueConverter
{
Object getConvertedValue(FacesContext context, String value);
}
/**
* @param context the faces context
* @param value the value to check
* @param converter
* @param iterator contains instances of SelectItem
* @return if the value of a selectitem is equal to the given value
*/
public static boolean matchValue(FacesContext context, Object value,
Iterator<SelectItem> selectItemsIter, _ValueConverter converter)
{
while (selectItemsIter.hasNext())
{
SelectItem item = selectItemsIter.next();
if (item instanceof SelectItemGroup)
{
SelectItemGroup itemgroup = (SelectItemGroup) item;
SelectItem[] selectItems = itemgroup.getSelectItems();
if (selectItems != null
&& selectItems.length > 0
&& matchValue(context, value, Arrays.asList(
selectItems).iterator(), converter))
{
return true;
}
}
else
{
Object itemValue = item.getValue();
if(converter != null && itemValue instanceof String)
{
itemValue = converter.getConvertedValue(context, (String)itemValue);
}
if (value==itemValue || value.equals(itemValue))
{
return true;
}
}
}
return false;
}
}