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The private implementation classes of the Apache MyFaces Core JSF-2.3-next Implementation
/*
* 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.component.search;
import java.util.List;
import javax.faces.component.UIComponent;
import javax.faces.component.search.UntargetableComponent;
import javax.faces.component.search.SearchExpressionContext;
import javax.faces.component.search.SearchKeywordContext;
import javax.faces.component.search.SearchKeywordResolver;
/**
*
*/
public class PreviousSearchKeywordResolver extends SearchKeywordResolver
{
public static final String PREVIOUS_KEYWORD = "previous";
@Override
public void resolve(SearchKeywordContext expressionContext, UIComponent current, String keyword)
{
UIComponent parent = current.getParent();
if (parent.getChildCount() > 1)
{
List children = parent.getChildren();
int index = children.indexOf(current);
if (index > 0)
{
int nextIndex = -1;
do
{
index--;
if(!(children.get(index) instanceof UntargetableComponent))
{
nextIndex = index;
}
} while (nextIndex == -1 && index > 0);
if (nextIndex != -1)
{
expressionContext.invokeContextCallback(children.get(nextIndex));
}
}
}
expressionContext.setKeywordResolved(true);
}
@Override
public boolean isResolverForKeyword(SearchExpressionContext searchExpressionContext, String keyword)
{
return PREVIOUS_KEYWORD.equalsIgnoreCase(keyword);
}
@Override
public boolean isPassthrough(SearchExpressionContext searchExpressionContext, String keyword)
{
return false;
}
@Override
public boolean isLeaf(SearchExpressionContext searchExpressionContext, String keyword)
{
return false;
}
}