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/*
* 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.
*/
/* $Id$ */
package org.apache.fop.layoutmgr;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.ListIterator;
import org.apache.fop.layoutmgr.inline.KnuthInlineBox;
public final class FootenoteUtil {
private FootenoteUtil() {
}
/**
* Returns the footnotes contained in the given element list.
*/
public static List<LayoutManager> getFootnotes(List<ListElement> elemenList) {
return getFootnotes(elemenList, 0, elemenList.size() - 1);
}
/**
* Returns the footnotes contained in the given element list.
*
* @param startIndex index in the element list from which to start the scan, inclusive
* @param endIndex index in the element list at which to stop the scan, inclusive
*/
public static List<LayoutManager> getFootnotes(List<ListElement> elemenList, int startIndex, int endIndex) {
ListIterator<ListElement> iter = elemenList.listIterator(startIndex);
List<LayoutManager> footnotes = null;
while (iter.nextIndex() <= endIndex) {
ListElement element = iter.next();
if (element instanceof KnuthInlineBox && ((KnuthInlineBox) element).isAnchor()) {
footnotes = getFootnoteList(footnotes);
footnotes.add(((KnuthInlineBox) element).getFootnoteBodyLM());
} else if (element instanceof KnuthBlockBox && ((KnuthBlockBox) element).hasAnchors()) {
footnotes = getFootnoteList(footnotes);
footnotes.addAll(((KnuthBlockBox) element).getFootnoteBodyLMs());
}
}
if (footnotes == null) {
return Collections.emptyList();
} else {
return footnotes;
}
}
private static <T> List<T> getFootnoteList(List<T> footnotes) {
if (footnotes == null) {
return new ArrayList<T>();
} else {
return footnotes;
}
}
}
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