private static PdfObject CopyObjectKid(PdfObject kid, PdfDictionary copiedParent, PdfDictionary destPage,
bool parentChangePg, StructureTreeCopier.StructElemCopyingParams copyingParams)
{
if (kid.IsNumber())
{
if (!parentChangePg)
{
copyingParams.GetToDocument().GetStructTreeRoot().GetParentTreeHandler().RegisterMcr(new PdfMcrNumber((PdfNumber
)kid, new PdfStructElem(copiedParent)));
return(kid);
}
}
else
{
if (kid.IsDictionary())
{
PdfDictionary kidAsDict = (PdfDictionary)kid;
if (copyingParams.GetObjectsToCopy().Contains(kidAsDict))
{
bool hasParent = kidAsDict.ContainsKey(PdfName.P);
PdfDictionary copiedKid = CopyObject(kidAsDict, destPage, parentChangePg, copyingParams);
if (hasParent)
{
copiedKid.Put(PdfName.P, copiedParent);
}
else
{
PdfMcr mcr;
if (copiedKid.ContainsKey(PdfName.Obj))
{
mcr = new PdfObjRef(copiedKid, new PdfStructElem(copiedParent));
PdfDictionary contentItemObject = copiedKid.GetAsDictionary(PdfName.Obj);
if (PdfName.Link.Equals(contentItemObject.GetAsName(PdfName.Subtype)) && !contentItemObject.ContainsKey(PdfName
.P))
{
// Some link annotations may be not copied, because their destination page is not copied.
return(null);
}
contentItemObject.Put(PdfName.StructParent, new PdfNumber((int)copyingParams.GetToDocument().GetNextStructParentIndex
()));
}
else
{
mcr = new PdfMcrDictionary(copiedKid, new PdfStructElem(copiedParent));
}
copyingParams.GetToDocument().GetStructTreeRoot().GetParentTreeHandler().RegisterMcr(mcr);
}
return(copiedKid);
}
}
}
return(null);
}
private static StructureTreeCopier.CopyStructureResult CopyStructure(PdfDocument destDocument, IDictionary
<PdfPage, PdfPage> page2page, PdfDocument callingDocument, bool copyFromDestDocument) {
PdfDocument fromDocument = copyFromDestDocument ? destDocument : callingDocument;
IDictionary<PdfDictionary, PdfDictionary> topsToFirstDestPage = new Dictionary<PdfDictionary, PdfDictionary
>();
ICollection<PdfObject> objectsToCopy = new HashSet<PdfObject>();
IDictionary<PdfDictionary, PdfDictionary> page2pageDictionaries = new Dictionary<PdfDictionary, PdfDictionary
>();
foreach (KeyValuePair<PdfPage, PdfPage> page in page2page) {
page2pageDictionaries.Put(page.Key.GetPdfObject(), page.Value.GetPdfObject());
ICollection<PdfMcr> mcrs = fromDocument.GetStructTreeRoot().GetPageMarkedContentReferences(page.Key);
if (mcrs != null) {
foreach (PdfMcr mcr in mcrs) {
if (mcr is PdfMcrDictionary || mcr is PdfObjRef) {
objectsToCopy.Add(mcr.GetPdfObject());
}
PdfDictionary top = AddAllParentsToSet(mcr, objectsToCopy);
if (top != null) {
if (top.IsFlushed()) {
throw new PdfException(PdfException.CannotCopyFlushedTag);
}
if (!topsToFirstDestPage.ContainsKey(top)) {
topsToFirstDestPage.Put(top, page.Value.GetPdfObject());
}
}
}
}
}
IList<PdfDictionary> topsInOriginalOrder = new List<PdfDictionary>();
foreach (IStructureNode kid in fromDocument.GetStructTreeRoot().GetKids()) {
if (kid == null) {
continue;
}
PdfDictionary kidObject = ((PdfStructElem)kid).GetPdfObject();
if (topsToFirstDestPage.ContainsKey(kidObject)) {
topsInOriginalOrder.Add(kidObject);
}
}
StructureTreeCopier.StructElemCopyingParams structElemCopyingParams = new StructureTreeCopier.StructElemCopyingParams
(objectsToCopy, destDocument, page2pageDictionaries, copyFromDestDocument);
PdfStructTreeRoot destStructTreeRoot = destDocument.GetStructTreeRoot();
destStructTreeRoot.MakeIndirect(destDocument);
IList<PdfDictionary> copiedTops = new List<PdfDictionary>();
foreach (PdfDictionary top in topsInOriginalOrder) {
PdfDictionary copied = CopyObject(top, topsToFirstDestPage.Get(top), false, structElemCopyingParams);
copiedTops.Add(copied);
}
return new StructureTreeCopier.CopyStructureResult(copiedTops, structElemCopyingParams.GetCopiedNamespaces
());
}
private static PdfDictionary CopyNamespaceDict(PdfDictionary srcNsDict, StructureTreeCopier.StructElemCopyingParams
copyingParams)
{
IList <PdfName> excludeKeys = JavaCollectionsUtil.SingletonList <PdfName>(PdfName.RoleMapNS);
PdfDocument toDocument = copyingParams.GetToDocument();
PdfDictionary copiedNsDict = srcNsDict.CopyTo(toDocument, excludeKeys, false);
copyingParams.AddCopiedNamespace(copiedNsDict);
PdfDictionary srcRoleMapNs = srcNsDict.GetAsDictionary(PdfName.RoleMapNS);
// if this src namespace was already copied (or in the process of copying) it will contain role map already
PdfDictionary copiedRoleMap = copiedNsDict.GetAsDictionary(PdfName.RoleMapNS);
if (srcRoleMapNs != null && copiedRoleMap == null)
{
copiedRoleMap = new PdfDictionary();
copiedNsDict.Put(PdfName.RoleMapNS, copiedRoleMap);
foreach (KeyValuePair <PdfName, PdfObject> entry in srcRoleMapNs.EntrySet())
{
PdfObject copiedMapping;
if (entry.Value.IsArray())
{
PdfArray srcMappingArray = (PdfArray)entry.Value;
if (srcMappingArray.Size() > 1 && srcMappingArray.Get(1).IsDictionary())
{
PdfArray copiedMappingArray = new PdfArray();
copiedMappingArray.Add(srcMappingArray.Get(0).CopyTo(toDocument));
PdfDictionary copiedNamespace = CopyNamespaceDict(srcMappingArray.GetAsDictionary(1), copyingParams);
copiedMappingArray.Add(copiedNamespace);
copiedMapping = copiedMappingArray;
}
else
{
ILog logger = LogManager.GetLogger(typeof(StructureTreeCopier));
logger.Warn(String.Format(iText.IO.LogMessageConstant.ROLE_MAPPING_FROM_SOURCE_IS_NOT_COPIED_INVALID, entry
.Key.ToString()));
continue;
}
}
else
{
copiedMapping = entry.Value.CopyTo(toDocument);
}
PdfName copiedRoleFrom = (PdfName)entry.Key.CopyTo(toDocument);
copiedRoleMap.Put(copiedRoleFrom, copiedMapping);
}
}
return(copiedNsDict);
}
private static PdfDictionary CopyObject(PdfDictionary source, PdfDictionary destPage, bool parentChangePg,
StructureTreeCopier.StructElemCopyingParams copyingParams)
{
PdfDictionary copied;
if (copyingParams.IsCopyFromDestDocument())
{
//TODO: detect wether object is needed to be cloned at all
copied = source.Clone(ignoreKeysForClone);
if (source.IsIndirect())
{
copied.MakeIndirect(copyingParams.GetToDocument());
}
PdfDictionary pg = source.GetAsDictionary(PdfName.Pg);
if (pg != null)
{
if (copyingParams.IsCopyFromDestDocument())
{
if (pg != destPage)
{
copied.Put(PdfName.Pg, destPage);
parentChangePg = true;
}
else
{
parentChangePg = false;
}
}
}
}
else
{
copied = source.CopyTo(copyingParams.GetToDocument(), ignoreKeysForCopy, true);
PdfDictionary obj = source.GetAsDictionary(PdfName.Obj);
if (obj != null)
{
// Link annotations could be not added to the toDocument, so we need to identify this case.
// When obj.copyTo is called, and annotation was already copied, we would get this already created copy.
// If it was already copied and added, /P key would be set. Otherwise /P won't be set.
obj = obj.CopyTo(copyingParams.GetToDocument(), JavaUtil.ArraysAsList(PdfName.P), false);
copied.Put(PdfName.Obj, obj);
}
PdfDictionary nsDict = source.GetAsDictionary(PdfName.NS);
if (nsDict != null)
{
PdfDictionary copiedNsDict = CopyNamespaceDict(nsDict, copyingParams);
copied.Put(PdfName.NS, copiedNsDict);
}
PdfDictionary pg = source.GetAsDictionary(PdfName.Pg);
if (pg != null)
{
PdfDictionary pageAnalog = copyingParams.GetPage2page().Get(pg);
if (pageAnalog == null)
{
pageAnalog = destPage;
parentChangePg = true;
}
else
{
parentChangePg = false;
}
copied.Put(PdfName.Pg, pageAnalog);
}
}
PdfObject k = source.Get(PdfName.K);
if (k != null)
{
if (k.IsArray())
{
PdfArray kArr = (PdfArray)k;
PdfArray newArr = new PdfArray();
for (int i = 0; i < kArr.Size(); i++)
{
PdfObject copiedKid = CopyObjectKid(kArr.Get(i), copied, destPage, parentChangePg, copyingParams);
if (copiedKid != null)
{
newArr.Add(copiedKid);
}
}
if (!newArr.IsEmpty())
{
if (newArr.Size() == 1)
{
copied.Put(PdfName.K, newArr.Get(0));
}
else
{
copied.Put(PdfName.K, newArr);
}
}
}
else
{
PdfObject copiedKid = CopyObjectKid(k, copied, destPage, parentChangePg, copyingParams);
if (copiedKid != null)
{
copied.Put(PdfName.K, copiedKid);
}
}
}
return(copied);
}