/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for Additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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namespace HH.WMS.Utils.NPOI.HSSF.Record.Aggregates
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{
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using System;
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using HH.WMS.Utils.NPOI.HSSF.Model;
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using System.Collections.Generic;
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using System.IO;
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/**
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* Manages the all the records associated with a chart sub-stream.<br/>
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* Includes the Initial {@link BOFRecord} and {@link EOFRecord}.
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*
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* @author Josh Micich
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*/
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public class ChartSubstreamRecordAggregate : RecordAggregate
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{
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private BOFRecord _bofRec;
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/**
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* All the records between BOF and EOF
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*/
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private List<RecordBase> _recs;
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private PageSettingsBlock _psBlock;
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public ChartSubstreamRecordAggregate(RecordStream rs)
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{
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_bofRec = (BOFRecord)rs.GetNext();
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List<RecordBase> temp = new List<RecordBase>();
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while (rs.PeekNextClass() != typeof(EOFRecord))
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{
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Type a = rs.PeekNextClass();
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if (PageSettingsBlock.IsComponentRecord(rs.PeekNextSid()))
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{
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if (_psBlock != null)
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{
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if (rs.PeekNextSid() == HeaderFooterRecord.sid)
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{
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// test samples: 45538_classic_Footer.xls, 45538_classic_Header.xls
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_psBlock.AddLateHeaderFooter((HeaderFooterRecord)rs.GetNext());
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continue;
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}
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throw new InvalidDataException(
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"Found more than one PageSettingsBlock in chart sub-stream");
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}
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_psBlock = new PageSettingsBlock(rs);
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temp.Add(_psBlock);
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continue;
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}
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temp.Add(rs.GetNext());
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}
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_recs = temp;
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Record eof = rs.GetNext(); // no need to save EOF in field
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if (!(eof is EOFRecord))
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{
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throw new InvalidOperationException("Bad chart EOF");
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}
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}
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public override void VisitContainedRecords(RecordVisitor rv)
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{
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if (_recs.Count==0)
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{
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return;
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}
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rv.VisitRecord(_bofRec);
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for (int i = 0; i < _recs.Count; i++)
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{
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RecordBase rb = _recs[i];
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if (rb is RecordAggregate)
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{
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((RecordAggregate)rb).VisitContainedRecords(rv);
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}
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else
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{
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rv.VisitRecord((Record)rb);
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}
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}
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rv.VisitRecord(EOFRecord.instance);
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}
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}
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}
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