/// <summary>Marks object to be saved as indirect.</summary>
/// <param name="document">a document the indirect reference will belong to.</param>
/// <returns>object itself.</returns>
public virtual PdfObject MakeIndirect(PdfDocument document, PdfIndirectReference reference)
{
if (document == null || indirectReference != null)
{
return(this);
}
if (document.GetWriter() == null)
{
throw new PdfException(PdfException.ThereIsNoAssociatePdfWriterForMakingIndirects);
}
if (reference == null)
{
indirectReference = document.CreateNextIndirectReference();
indirectReference.SetRefersTo(this);
}
else
{
reference.SetState(MODIFIED);
indirectReference = reference;
indirectReference.SetRefersTo(this);
}
SetState(FORBID_RELEASE);
ClearState(MUST_BE_INDIRECT);
return(this);
}