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contributor license agreements. See the NOTICE file distributed with
this work for additional information regarding copyright ownership.
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(the "License"); you may not use this file except in compliance with
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Unless required by applicable law or agreed to in writing, software
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See the License for the specific language governing permissions and
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package org.apache.poi.xssf.usermodel;
import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.util.EnumMap;
import java.util.Map;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.apache.commons.io.input.UnsynchronizedByteArrayInputStream;
import org.apache.commons.io.output.StringBuilderWriter;
import org.apache.poi.ooxml.util.DocumentHelper;
import org.apache.poi.ss.usermodel.DifferentialStyleProvider;
import org.apache.poi.ss.usermodel.TableStyle;
import org.apache.poi.ss.usermodel.TableStyleType;
import org.apache.poi.util.XMLHelper;
import org.apache.poi.xssf.model.StylesTable;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import static org.apache.poi.xssf.usermodel.XSSFRelation.NS_SPREADSHEETML;
/**
* Table style names defined in the OOXML spec.
* The actual styling is defined in presetTableStyles.xml
*/
public enum XSSFBuiltinTableStyle {
/***/
TableStyleDark1,
/***/
TableStyleDark2,
/***/
TableStyleDark3,
/***/
TableStyleDark4,
/***/
TableStyleDark5,
/***/
TableStyleDark6,
/***/
TableStyleDark7,
/***/
TableStyleDark8,
/***/
TableStyleDark9,
/***/
TableStyleDark10,
/***/
TableStyleDark11,
/***/
TableStyleLight1,
/***/
TableStyleLight2,
/***/
TableStyleLight3,
/***/
TableStyleLight4,
/***/
TableStyleLight5,
/***/
TableStyleLight6,
/***/
TableStyleLight7,
/***/
TableStyleLight8,
/***/
TableStyleLight9,
/***/
TableStyleLight10,
/***/
TableStyleLight11,
/***/
TableStyleLight12,
/***/
TableStyleLight13,
/***/
TableStyleLight14,
/***/
TableStyleLight15,
/***/
TableStyleLight16,
/***/
TableStyleLight17,
/***/
TableStyleLight18,
/***/
TableStyleLight19,
/***/
TableStyleLight20,
/***/
TableStyleLight21,
/***/
TableStyleMedium1,
/***/
TableStyleMedium2,
/***/
TableStyleMedium3,
/***/
TableStyleMedium4,
/***/
TableStyleMedium5,
/***/
TableStyleMedium6,
/***/
TableStyleMedium7,
/***/
TableStyleMedium8,
/***/
TableStyleMedium9,
/***/
TableStyleMedium10,
/***/
TableStyleMedium11,
/***/
TableStyleMedium12,
/***/
TableStyleMedium13,
/***/
TableStyleMedium14,
/***/
TableStyleMedium15,
/***/
TableStyleMedium16,
/***/
TableStyleMedium17,
/***/
TableStyleMedium18,
/***/
TableStyleMedium19,
/***/
TableStyleMedium20,
/***/
TableStyleMedium21,
/***/
TableStyleMedium22,
/***/
TableStyleMedium23,
/***/
TableStyleMedium24,
/***/
TableStyleMedium25,
/***/
TableStyleMedium26,
/***/
TableStyleMedium27,
/***/
TableStyleMedium28,
/***/
PivotStyleMedium1,
/***/
PivotStyleMedium2,
/***/
PivotStyleMedium3,
/***/
PivotStyleMedium4,
/***/
PivotStyleMedium5,
/***/
PivotStyleMedium6,
/***/
PivotStyleMedium7,
/***/
PivotStyleMedium8,
/***/
PivotStyleMedium9,
/***/
PivotStyleMedium10,
/***/
PivotStyleMedium11,
/***/
PivotStyleMedium12,
/***/
PivotStyleMedium13,
/***/
PivotStyleMedium14,
/***/
PivotStyleMedium15,
/***/
PivotStyleMedium16,
/***/
PivotStyleMedium17,
/***/
PivotStyleMedium18,
/***/
PivotStyleMedium19,
/***/
PivotStyleMedium20,
/***/
PivotStyleMedium21,
/***/
PivotStyleMedium22,
/***/
PivotStyleMedium23,
/***/
PivotStyleMedium24,
/***/
PivotStyleMedium25,
/***/
PivotStyleMedium26,
/***/
PivotStyleMedium27,
/***/
PivotStyleMedium28,
/***/
PivotStyleLight1,
/***/
PivotStyleLight2,
/***/
PivotStyleLight3,
/***/
PivotStyleLight4,
/***/
PivotStyleLight5,
/***/
PivotStyleLight6,
/***/
PivotStyleLight7,
/***/
PivotStyleLight8,
/***/
PivotStyleLight9,
/***/
PivotStyleLight10,
/***/
PivotStyleLight11,
/***/
PivotStyleLight12,
/***/
PivotStyleLight13,
/***/
PivotStyleLight14,
/***/
PivotStyleLight15,
/***/
PivotStyleLight16,
/***/
PivotStyleLight17,
/***/
PivotStyleLight18,
/***/
PivotStyleLight19,
/***/
PivotStyleLight20,
/***/
PivotStyleLight21,
/***/
PivotStyleLight22,
/***/
PivotStyleLight23,
/***/
PivotStyleLight24,
/***/
PivotStyleLight25,
/***/
PivotStyleLight26,
/***/
PivotStyleLight27,
/***/
PivotStyleLight28,
/***/
PivotStyleDark1,
/***/
PivotStyleDark2,
/***/
PivotStyleDark3,
/***/
PivotStyleDark4,
/***/
PivotStyleDark5,
/***/
PivotStyleDark6,
/***/
PivotStyleDark7,
/***/
PivotStyleDark8,
/***/
PivotStyleDark9,
/***/
PivotStyleDark10,
/***/
PivotStyleDark11,
/***/
PivotStyleDark12,
/***/
PivotStyleDark13,
/***/
PivotStyleDark14,
/***/
PivotStyleDark15,
/***/
PivotStyleDark16,
/***/
PivotStyleDark17,
/***/
PivotStyleDark18,
/***/
PivotStyleDark19,
/***/
PivotStyleDark20,
/***/
PivotStyleDark21,
/***/
PivotStyleDark22,
/***/
PivotStyleDark23,
/***/
PivotStyleDark24,
/***/
PivotStyleDark25,
/***/
PivotStyleDark26,
/***/
PivotStyleDark27,
/***/
PivotStyleDark28,
;
/**
* Interestingly, this is initialized after the enum instances, so using an {@link EnumMap} works.
*/
private static final Map styleMap = new EnumMap<>(XSSFBuiltinTableStyle.class);
XSSFBuiltinTableStyle() {
}
/**
* @return built-in {@link TableStyle} definition
*/
public TableStyle getStyle() {
init();
return styleMap.get(this);
}
/**
* NOTE: only checks by name, not definition.
*
* @return true if the style represents a built-in style, false if it is null or a custom style
*/
public static boolean isBuiltinStyle(TableStyle style) {
if (style == null) return false;
try {
XSSFBuiltinTableStyle.valueOf(style.getName());
return true;
} catch (IllegalArgumentException e) {
return false;
}
}
/**
* Only init once - thus the synchronized. Lazy, after creating instances,
* and only when a style is actually needed, to avoid overhead for uses
* that don't need the actual style definitions.
*
* Public so clients can initialize the map on startup rather than lazily
* during evaluation if desired.
*/
public static synchronized void init() {
if (!styleMap.isEmpty()) return;
/*
* initialize map. Every built-in has this format:
*
*
* ...
* ...
*
*
* ...
*
*
*/
try (InputStream is = XSSFBuiltinTableStyle.class.getResourceAsStream("presetTableStyles.xml")) {
final Document doc = DocumentHelper.readDocument(is);
final NodeList styleNodes = doc.getDocumentElement().getChildNodes();
for (int i = 0; i < styleNodes.getLength(); i++) {
final Node node = styleNodes.item(i);
if (node.getNodeType() != Node.ELEMENT_NODE) continue; // only care about elements
final Element tag = (Element) node;
String styleName = tag.getTagName();
XSSFBuiltinTableStyle builtIn = XSSFBuiltinTableStyle.valueOf(styleName);
Node dxfsNode = tag.getElementsByTagName("dxfs").item(0);
Node tableStyleNode = tag.getElementsByTagName("tableStyles").item(0);
// hack because I can't figure out how to get XMLBeans to parse a sub-element in a standalone manner
// - build a fake styles.xml file with just this built-in
StylesTable styles = new StylesTable();
try (UnsynchronizedByteArrayInputStream bis = UnsynchronizedByteArrayInputStream.builder().setByteArray(
styleXML(dxfsNode, tableStyleNode).getBytes(StandardCharsets.UTF_8)).get()) {
styles.readFrom(bis);
}
styleMap.put(builtIn, new XSSFBuiltinTypeStyleStyle(builtIn, styles.getExplicitTableStyle(styleName)));
}
} catch (Exception e) {
throw new IllegalStateException(e);
}
}
private static String styleXML(Node dxfsNode, Node tableStyleNode) throws TransformerException {
// built-ins doc uses 1-based dxf indexing, Excel uses 0 based.
// add a dummy node to adjust properly.
dxfsNode.insertBefore(dxfsNode.getOwnerDocument().createElement("dxf"), dxfsNode.getFirstChild());
return "\n" +
"\n" +
writeToString(dxfsNode) +
writeToString(tableStyleNode) +
" ";
}
private static String writeToString(Node node) throws TransformerException {
try (StringBuilderWriter sw = new StringBuilderWriter(1024)){
Transformer transformer = XMLHelper.newTransformer();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
transformer.transform(new DOMSource(node), new StreamResult(sw));
return sw.toString();
}
}
/**
* implementation for built-in styles
*/
protected static class XSSFBuiltinTypeStyleStyle implements TableStyle {
private final XSSFBuiltinTableStyle builtIn;
private final TableStyle style;
protected XSSFBuiltinTypeStyleStyle(XSSFBuiltinTableStyle builtIn, TableStyle style) {
this.builtIn = builtIn;
this.style = style;
}
@Override
public String getName() {
return style.getName();
}
@Override
public int getIndex() {
return builtIn.ordinal();
}
@Override
public boolean isBuiltin() {
return true;
}
@Override
public DifferentialStyleProvider getStyle(TableStyleType type) {
return style.getStyle(type);
}
}
}