82 lines
2.8 KiB
Java
82 lines
2.8 KiB
Java
/* ====================================================================
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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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package org.apache.poi.hssf.record.aggregates;
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import java.util.ArrayList;
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import java.util.List;
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import org.apache.poi.hssf.model.RecordStream;
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import org.apache.poi.hssf.record.BOFRecord;
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import org.apache.poi.hssf.record.EOFRecord;
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import org.apache.poi.hssf.record.Record;
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import org.apache.poi.hssf.record.RecordBase;
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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 final {@link EOFRecord}.
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*
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* @author Josh Micich
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*/
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public final class ChartSubstreamRecordAggregate extends RecordAggregate {
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private final 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 final List<RecordBase> _recs;
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private PageSettingsBlock _psBlock;
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public ChartSubstreamRecordAggregate(RecordStream rs) {
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_bofRec = (BOFRecord) rs.getNext();
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List<RecordBase> temp = new ArrayList<RecordBase>();
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while (rs.peekNextClass() != EOFRecord.class) {
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if (PageSettingsBlock.isComponentRecord(rs.peekNextSid())) {
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if (_psBlock != null) {
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throw new IllegalStateException(
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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 instanceof EOFRecord)) {
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throw new IllegalStateException("Bad chart EOF");
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}
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}
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public void visitContainedRecords(RecordVisitor rv) {
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if (_recs.isEmpty()) {
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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.size(); i++) {
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RecordBase rb = _recs.get(i);
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if (rb instanceof RecordAggregate) {
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((RecordAggregate) rb).visitContainedRecords(rv);
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} else {
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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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