| /* ==================================================================== |
| 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.poi.xwpf.usermodel; |
| |
| import java.math.BigInteger; |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * Manages IDs for footnotes and endnotes. |
| * <p>Footnotes and endnotes are managed in separate parts but |
| * represent a single namespace of IDs.</p> |
| */ |
| public class FootnoteEndnoteIdManager { |
| |
| private XWPFDocument document; |
| |
| public FootnoteEndnoteIdManager(XWPFDocument document) { |
| this.document = document; |
| } |
| |
| /** |
| * Gets the next ID number. |
| * |
| * @return ID number to use. |
| */ |
| public BigInteger nextId() { |
| |
| List<BigInteger> ids = new ArrayList<>(); |
| for (XWPFAbstractFootnoteEndnote note : document.getFootnotes()) { |
| ids.add(note.getId()); |
| } |
| for (XWPFAbstractFootnoteEndnote note : document.getEndnotes()) { |
| ids.add(note.getId()); |
| } |
| int cand = ids.size(); |
| BigInteger newId = BigInteger.valueOf(cand); |
| while (ids.contains(newId)) { |
| cand++; |
| newId = BigInteger.valueOf(cand); |
| } |
| |
| return newId; |
| } |
| |
| |
| } |