Question about "IRT" entry for markup annotations.

["Paulo Soares" <psoares (at) consiste.pt>]

I can't see any reason why PdfAnnotation.getIndirectReference() is not
public. The fix is in the CVS.

> -----Original Message-----
> From: itext-questions-admin (at) lists.sourceforge.net 
> [mailto:itext-questions-admin (at) lists.sourceforge.net] On 
> Behalf Of Alexander Golub
> Sent: Monday, February 06, 2006 5:21 PM
> To: itext-questions (at) lists.sourceforge.net
> Subject: [iText-questions] Question about "IRT" entry for 
> markup annotations.
> 
> Hello, friends.
>  
> I've encountered the situation, when PDF document contains 
> text annotation with reply. As you definitely know, reply is 
> the annotation too, but it is rendering in the same area as 
> annotation the given reply is dirrected to and text of reply 
> is shown within popup window of "parent" annotation.
>  
> As you again definitely know, reply annotation is connected 
> to "parent" annotation via "IRT" entry from markup 
> annotations dictionary. This entry is either text string 
> which refers to an entry "NM" of parent annotation, or 
> indirect reference to parent annotation.
>  
> What I have : I have original PDF file without annotations 
> (file 1) and PDF file with two text annotations, one of which 
> has a "reply-to" connecion to another (file 2); file 2 was 
> obtained from file 1 by adding these two annotations. 
>  
> What do I want : using iText library, I want to read all 
> annotations from file 2 and, basing on file 1, create another 
> file - PDF file which will contain all annotations from file 
> 2 appended to the file 1. Kinda copy, although technically it 
> is not a copy.
>  
> I've successfully obtained annotations from file 2, and I've 
> added them to a file 3; now I have to link one annotation as 
> reply to another one.
> When reply annotation is referring to a parent annotation via 
> "NM" entry, I can handle this successfully like in the 
> following code snippet (regardless of restrictions by page):
> ...
> PdfStamper stamper = new PdfStamper("file1.pdf", "file3.pdf");
> ...
> PdfAnnotation parent = 
> PdfAnnotation.createText(stamper.getWriter, getRectangle(), 
> getContent(), isOpened1(), getName());
> PdfAnnotation reply = 
> PdfAnnotation.createText(stamper.getWriter, 
> getRectangleReply(), getContentReply(), isOpenedReply(), 
> getNameReply());
> ...
> reply.put(new PdfName("IRT"), new 
> PdfString(getParentAnnotationUniqueName));
>  
> But when reply annotation is connected with parent annotation 
> via indirect reference, I cannot to do the same trick with 
> put() method - I don't have access to an indirect reference 
> of parent annotation.
>  
> I can see from code, that similar situation with relation by 
> reference for "parent-popup" pair was encountered. Situation 
> was resolved via the PdfAnnotation's method setPopup(), in 
> which an internal package method getIndirectReference() was used.
>  
> To achieve my goal, I use the following workaround : within 
> package "com.lowagie.text.pdf" I create a class 
> PackageMethodsAccessor with a single static method, which has 
> an access to a package method getIndirectReference(), which 
> is used in the PdfAnnotation's setPopup() method:
>  
> public class PackageMethodsAccessor
> {
>    public static PdfIndirectReference 
> getIndirectReference_PdfAnnotation(PdfAnnotation annotation)
>    {
>      return annotation.getIndirectReference();
>    }
> }
>  
>  
> I know that it is not correct technique and it is a hack. But 
> can you tell me - is there a legal approach of setting 
> relation "annotation"-"reply to annotation" in the iText? If 
> there is no such method, is it possible to provide means of 
> interconnection of such reply annotations within next library ?
> 


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