| /* ==================================================================== |
| 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.hssf.record.aggregates; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.poi.hssf.model.RecordStream; |
| import org.apache.poi.hssf.record.*; |
| |
| /** |
| * Manages the all the records associated with a chart sub-stream.<p> |
| * Includes the initial {@link BOFRecord} and final {@link EOFRecord}. |
| */ |
| public final class ChartSubstreamRecordAggregate extends RecordAggregate { |
| |
| private final BOFRecord _bofRec; |
| /** |
| * All the records between BOF and EOF |
| */ |
| private final List<RecordBase> _recs; |
| private PageSettingsBlock _psBlock; |
| |
| public ChartSubstreamRecordAggregate(RecordStream rs) { |
| _bofRec = (BOFRecord) rs.getNext(); |
| List<RecordBase> temp = new ArrayList<>(); |
| while (rs.peekNextClass() != EOFRecord.class) { |
| if (PageSettingsBlock.isComponentRecord(rs.peekNextSid())) { |
| if (_psBlock != null) { |
| if (rs.peekNextSid() == HeaderFooterRecord.sid) { |
| // test samples: 45538_classic_Footer.xls, 45538_classic_Header.xls |
| _psBlock.addLateHeaderFooter((HeaderFooterRecord)rs.getNext()); |
| continue; |
| } |
| throw new IllegalStateException( |
| "Found more than one PageSettingsBlock in chart sub-stream, had sid: " + rs.peekNextSid()); |
| } |
| _psBlock = new PageSettingsBlock(rs); |
| temp.add(_psBlock); |
| continue; |
| } |
| temp.add(rs.getNext()); |
| } |
| _recs = temp; |
| org.apache.poi.hssf.record.Record eof = rs.getNext(); // no need to save EOF in field |
| if (!(eof instanceof EOFRecord)) { |
| throw new IllegalStateException("Bad chart EOF"); |
| } |
| } |
| |
| @Override |
| public void visitContainedRecords(RecordVisitor rv) { |
| if (_recs.isEmpty()) { |
| return; |
| } |
| rv.visitRecord(_bofRec); |
| for (int i = 0; i < _recs.size(); i++) { |
| RecordBase rb = _recs.get(i); |
| if (rb instanceof RecordAggregate) { |
| ((RecordAggregate) rb).visitContainedRecords(rv); |
| } else { |
| rv.visitRecord((org.apache.poi.hssf.record.Record) rb); |
| } |
| } |
| rv.visitRecord(EOFRecord.instance); |
| } |
| } |