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For XSSFSheet, add a getDrawingPatriarch() method alongside the existing createDrawingPatriarch() one

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1652876 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Nick Burch 2015-01-18 23:45:04 +00:00
parent 9ccc610f6a
commit df20c0a69b
1 changed files with 40 additions and 27 deletions
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53
src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFSheet.java
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@ -408,6 +408,32 @@ public class XSSFSheet extends POIXMLDocumentPart implements Sheet {
}
}
/**
* Return the sheet's existing drawing, or null if there isn't yet one.
*
* Use {@link #createDrawingPatriarch()} to get or create
*
* @return a SpreadsheetML drawing
*/
public XSSFDrawing getDrawingPatriarch() {
CTDrawing ctDrawing = getCTDrawing();
if (ctDrawing != null) {
// Search the referenced drawing in the list of the sheet's relations
for (POIXMLDocumentPart p : getRelations()){
if (p instanceof XSSFDrawing) {
XSSFDrawing dr = (XSSFDrawing)p;
String drId = dr.getPackageRelationship().getId();
if (drId.equals(ctDrawing.getId())){
return dr;
}
break;
}
}
logger.log(POILogger.ERROR, "Can't find drawing with id=" + ctDrawing.getId() + " in the list of the sheet's relationships");
}
return null;
}
/**
* Create a new SpreadsheetML drawing. If this sheet already contains a drawing - return that.
*
@ -415,35 +441,22 @@ public class XSSFSheet extends POIXMLDocumentPart implements Sheet {
*/
@Override
public XSSFDrawing createDrawingPatriarch() {
XSSFDrawing drawing = null;
CTDrawing ctDrawing = getCTDrawing();
if(ctDrawing == null) {
if (ctDrawing != null) {
return getDrawingPatriarch();
}
//drawingNumber = #drawings.size() + 1
int drawingNumber = getPackagePart().getPackage().getPartsByContentType(XSSFRelation.DRAWINGS.getContentType()).size() + 1;
drawing = (XSSFDrawing)createRelationship(XSSFRelation.DRAWINGS, XSSFFactory.getInstance(), drawingNumber);
XSSFDrawing drawing = (XSSFDrawing)createRelationship(XSSFRelation.DRAWINGS, XSSFFactory.getInstance(), drawingNumber);
String relId = drawing.getPackageRelationship().getId();
//add CT_Drawing element which indicates that this sheet contains drawing components built on the drawingML platform.
//The relationship Id references the part containing the drawingML definitions.
ctDrawing = worksheet.addNewDrawing();
ctDrawing.setId(relId);
} else {
//search the referenced drawing in the list of the sheet's relations
for(POIXMLDocumentPart p : getRelations()){
if(p instanceof XSSFDrawing) {
XSSFDrawing dr = (XSSFDrawing)p;
String drId = dr.getPackageRelationship().getId();
if(drId.equals(ctDrawing.getId())){
drawing = dr;
break;
}
break;
}
}
if(drawing == null){
logger.log(POILogger.ERROR, "Can't find drawing with id=" + ctDrawing.getId() + " in the list of the sheet's relationships");
}
}
// Return the newly created drawing
return drawing;
}