/// <summary>Creates clone of the object which belongs to the same document as original object.</summary>
/// <remarks>
/// Creates clone of the object which belongs to the same document as original object.
/// New object shall not be used in other documents.
/// </remarks>
/// <returns>cloned object.</returns>
public virtual PdfObject Clone()
{
PdfObject newObject = NewInstance();
if (indirectReference != null || CheckState(MUST_BE_INDIRECT))
{
newObject.SetState(MUST_BE_INDIRECT);
}
newObject.CopyContent(this, null);
return(newObject);
}
protected internal virtual PdfObject CopyObject(PdfObject obj, PdfDocument document, bool allowDuplicating
)
{
if (obj is PdfIndirectReference)
{
obj = ((PdfIndirectReference)obj).GetRefersTo();
}
if (obj == null)
{
obj = PdfNull.PDF_NULL;
}
if (CheckTypeOfPdfDictionary(obj, PdfName.Catalog))
{
ILogger logger = LoggerFactory.GetLogger(typeof(PdfReader));
logger.Warn(LogMessageConstant.MAKE_COPY_OF_CATALOG_DICTIONARY_IS_FORBIDDEN);
obj = PdfNull.PDF_NULL;
}
PdfIndirectReference indirectReference = obj.GetIndirectReference();
PdfIndirectReference copiedIndirectReference;
int copyObjectKey = 0;
if (!allowDuplicating && indirectReference != null)
{
copyObjectKey = GetCopyObjectKey(obj);
copiedIndirectReference = copiedObjects.Get(copyObjectKey);
if (copiedIndirectReference != null)
{
return(copiedIndirectReference.GetRefersTo());
}
}
if (properties.smartMode && !CheckTypeOfPdfDictionary(obj, PdfName.Page))
{
PdfObject copiedObject = SmartCopyObject(obj);
if (copiedObject != null)
{
return(copiedObjects.Get(GetCopyObjectKey(copiedObject)).GetRefersTo());
}
}
PdfObject newObject = obj.NewInstance();
if (indirectReference != null)
{
if (copyObjectKey == 0)
{
copyObjectKey = GetCopyObjectKey(obj);
}
PdfIndirectReference reference = newObject.MakeIndirect(document).GetIndirectReference();
copiedObjects[copyObjectKey] = reference;
}
newObject.CopyContent(obj, document);
return(newObject);
}
protected internal virtual PdfObject CopyObject(PdfObject obj, PdfDocument documentTo, bool allowDuplicating
)
{
if (obj is PdfIndirectReference)
{
obj = ((PdfIndirectReference)obj).GetRefersTo();
}
if (obj == null)
{
obj = PdfNull.PDF_NULL;
}
if (CheckTypeOfPdfDictionary(obj, PdfName.Catalog))
{
ILog logger = LogManager.GetLogger(typeof(PdfReader));
logger.Warn(iText.IO.LogMessageConstant.MAKE_COPY_OF_CATALOG_DICTIONARY_IS_FORBIDDEN);
obj = PdfNull.PDF_NULL;
}
PdfIndirectReference indirectReference = obj.GetIndirectReference();
PdfDocument.IndirectRefDescription copiedObjectKey = null;
bool tryToFindDuplicate = !allowDuplicating && indirectReference != null;
if (tryToFindDuplicate)
{
copiedObjectKey = new PdfDocument.IndirectRefDescription(indirectReference);
PdfIndirectReference copiedIndirectReference = copiedObjects.Get(copiedObjectKey);
if (copiedIndirectReference != null)
{
return(copiedIndirectReference.GetRefersTo());
}
}
SerializedObjectContent serializedContent = null;
if (properties.smartMode && tryToFindDuplicate && !CheckTypeOfPdfDictionary(obj, PdfName.Page))
{
serializedContent = smartModeSerializer.SerializeObject(obj);
PdfIndirectReference objectRef = smartModeSerializer.GetSavedSerializedObject(serializedContent);
if (objectRef != null)
{
copiedObjects.Put(copiedObjectKey, objectRef);
return(objectRef.refersTo);
}
}
PdfObject newObject = obj.NewInstance();
if (indirectReference != null)
{
if (copiedObjectKey == null)
{
copiedObjectKey = new PdfDocument.IndirectRefDescription(indirectReference);
}
PdfIndirectReference indRef = newObject.MakeIndirect(documentTo).GetIndirectReference();
if (serializedContent != null)
{
smartModeSerializer.SaveSerializedObject(serializedContent, indRef);
}
copiedObjects.Put(copiedObjectKey, indRef);
}
newObject.CopyContent(obj, documentTo);
return(newObject);
}
protected internal virtual PdfObject CopyObject(PdfObject obj, PdfDocument document, bool allowDuplicating
)
{
if (obj is PdfIndirectReference)
{
obj = ((PdfIndirectReference)obj).GetRefersTo();
}
if (obj == null)
{
obj = PdfNull.PDF_NULL;
}
if (CheckTypeOfPdfDictionary(obj, PdfName.Catalog))
{
ILogger logger = LoggerFactory.GetLogger(typeof(PdfReader));
logger.Warn(LogMessageConstant.MAKE_COPY_OF_CATALOG_DICTIONARY_IS_FORBIDDEN);
obj = PdfNull.PDF_NULL;
}
PdfIndirectReference indirectReference = obj.GetIndirectReference();
int copyObjectKey = 0;
bool tryToFindDuplicate = !allowDuplicating && indirectReference != null;
if (tryToFindDuplicate)
{
copyObjectKey = CalculateIndRefKey(indirectReference);
PdfIndirectReference copiedIndirectReference = copiedObjects.Get(copyObjectKey);
if (copiedIndirectReference != null)
{
return(copiedIndirectReference.GetRefersTo());
}
}
if (obj.IsDictionary())
{
PdfName subtype = ((PdfDictionary)obj).GetAsName(PdfName.Subtype);
if (subtype != null && subtype.Equals(PdfName.Widget))
{
tryToFindDuplicate = false;
}
}
if (properties.smartMode && tryToFindDuplicate && !CheckTypeOfPdfDictionary(obj, PdfName.Page))
{
PdfIndirectReference copiedObjectRef = TryToFindPreviouslyCopiedEqualObject(obj);
if (copiedObjectRef != null)
{
PdfIndirectReference copiedIndirectReference = copiedObjects.Get(CalculateIndRefKey(copiedObjectRef));
copiedObjects[copyObjectKey] = copiedIndirectReference;
return(copiedIndirectReference.GetRefersTo());
}
}
PdfObject newObject = obj.NewInstance();
if (indirectReference != null)
{
if (copyObjectKey == 0)
{
copyObjectKey = CalculateIndRefKey(indirectReference);
}
PdfIndirectReference indRef = newObject.MakeIndirect(document).GetIndirectReference();
copiedObjects[copyObjectKey] = indRef;
}
newObject.CopyContent(obj, document);
return(newObject);
}
