| /* ==================================================================== |
| 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.xssf.usermodel; |
| |
| import static org.apache.poi.ooxml.POIXMLTypeLoader.DEFAULT_XML_OPTIONS; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| import javax.xml.namespace.QName; |
| |
| import org.apache.poi.ooxml.POIXMLException; |
| import org.apache.poi.openxml4j.opc.PackagePart; |
| import org.apache.xmlbeans.XmlException; |
| import org.apache.xmlbeans.XmlOptions; |
| import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTChartsheet; |
| import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTDrawing; |
| import org.openxmlformats.schemas.spreadsheetml.x2006.main.CTLegacyDrawing; |
| import org.openxmlformats.schemas.spreadsheetml.x2006.main.ChartsheetDocument; |
| |
| /** |
| * High level representation of Sheet Parts that are of type 'chartsheet'. |
| * <p> |
| * Chart sheet is a special kind of Sheet that contains only chart and no data. |
| * </p> |
| * |
| * @author Yegor Kozlov |
| */ |
| public class XSSFChartSheet extends XSSFSheet { |
| |
| private static final byte[] BLANK_WORKSHEET = blankWorksheet(); |
| |
| protected CTChartsheet chartsheet; |
| |
| /** |
| * @since POI 3.14-Beta1 |
| */ |
| protected XSSFChartSheet(PackagePart part) { |
| super(part); |
| } |
| |
| protected void read(InputStream is) throws IOException { |
| //initialize the supeclass with a blank worksheet |
| super.read(new ByteArrayInputStream(BLANK_WORKSHEET)); |
| |
| try { |
| chartsheet = ChartsheetDocument.Factory.parse(is, DEFAULT_XML_OPTIONS).getChartsheet(); |
| } catch (XmlException e){ |
| throw new POIXMLException(e); |
| } |
| } |
| |
| /** |
| * Provide access to the CTChartsheet bean holding this sheet's data |
| * |
| * @return the CTChartsheet bean holding this sheet's data |
| */ |
| public CTChartsheet getCTChartsheet() { |
| return chartsheet; |
| } |
| |
| @Override |
| protected CTDrawing getCTDrawing() { |
| return chartsheet.getDrawing(); |
| } |
| |
| @Override |
| protected CTLegacyDrawing getCTLegacyDrawing() { |
| return chartsheet.getLegacyDrawing(); |
| } |
| |
| @Override |
| protected void write(OutputStream out) throws IOException { |
| XmlOptions xmlOptions = new XmlOptions(DEFAULT_XML_OPTIONS); |
| xmlOptions.setSaveSyntheticDocumentElement( |
| new QName(CTChartsheet.type.getName().getNamespaceURI(), "chartsheet")); |
| chartsheet.save(out, xmlOptions); |
| |
| } |
| |
| private static byte[] blankWorksheet(){ |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| try { |
| new XSSFSheet().write(out); |
| } catch (IOException e){ |
| throw new RuntimeException(e); |
| } |
| return out.toByteArray(); |
| } |
| } |