Trying to modify a Reader Enabled XFA-based PDF, without breaking the
enablement is near impossible.... I don't recommend it.
Leonard
On Dec 6, 2007, at 7:01 AM, Sérgio Oliveira wrote:
> Hello,
>
> I´m also trying to achieve the same: change somes aspects of an
> extended PDF file without breaking extended functionality.
>
> The aspects I´m trying to change using iText is the data section
> and the scripts section of the xfa DOM. Using the code below, I´m
> able to change both but:
>
> # if I call stp.AcroFields.Xfa.Changed = true; the rights will be lost
> # if I not call stp.AcroFields.Xfa.Changed = true; the data will
> not be merged
>
> Even If I just create a stamper and call
> "stp.AcroFields.Xfa.Changed = true;" without changing anything in
> the PDF, the rights will be lost, so I suppose this line of code is
> the problem.
>
> So, my question is, what this line of code does? If I don´t call
> this property, my data will not be merged, but it will be inside
> the PDf, because the resulting PDf is bigger.
>
> That is way I was wondering if we can call something like this
> using code inside the PDF (after the user opened it) instead of
> using iText. iText would place the data and the code into the PDF,
> but the changed flag would be activated inside the PDF using
> LiveCycle designer code.
>
> Thank you
>
>
>
> Code
> //////////////////////////////////////////
> PdfReader reader = new PdfReader(Server.MapPath("PDF_RDExtpdf.pdf"));
>
> PdfStamper stp = new PdfStamper(reader, new FileStream(@"c:
> \newpdf.pdf", FileMode.CreateNew), reader.PdfVersion, true);
>
> XmlDocument doc = new XmlDocument();
> XmlDocument docXFA = new XmlDocument();
> XmlDocument docXFT = new XmlDocument();
>
> XmlNamespaceManager oNamespaceMgr = new XmlNamespaceManager
> (doc.NameTable);
> oNamespaceMgr.AddNamespace("xdp", "http://ns.adobe.com/xdp/";);
> oNamespaceMgr.AddNamespace("xfa", "http://www.xfa.org/schema/
> xfa-data/1.0/");
> oNamespaceMgr.AddNamespace("xft", "http://www.xfa.org/schema/
> xfa-template/2.5/");
>
>
> doc.LoadXml(stp.AcroFields.Xfa.DomDocument.InnerXml);
> docXFA.Load(Server.MapPath("data.xdp"));
> docXFT.Load(Server.MapPath("scripts.xml"));
>
> // Data
> XmlNodeList nlist = doc.SelectNodes("//xfa:datasets",
> oNamespaceMgr);
>
> for (i = 0; i <= nlist.Count - 1; i++)
> {
> nlist[i].InnerXml = docXFA.SelectNodes("//xfa:datasets",
> oNamespaceMgr).Item(0).ChildNodes[0].OuterXml;
> }
>
>
> //scripts
>
> for (i = 0; i <= nlist.Count - 1; i++)
> {
> nlist.Item(0).InnerXml = docXFT.ChildNodes[0].OuterXml;
> }
>
>
> stp.AcroFields.Xfa.DomDocument.InnerXml = doc.InnerXml;
> stp.AcroFields.Xfa.Changed = true;
> stp.Close();
> //////////////////////////////////////////////////////////////////////
> /
>
>
>
>
>> From: Leonard Rosenthol <[EMAIL PROTECTED]>
>> Reply-To: Post all your questions about iText here <itext-
>> [EMAIL PROTECTED]>
>> To: Post all your questions about iText here <itext-
>> [EMAIL PROTECTED]>
>> Subject: Re: [iText-questions] How to change a PDF but preserve
>> the rights
>> Date: Mon, 3 Dec 2007 10:58:33 -0500
>>
>> Nope and nope :(.
>>
>> Leonard
>>
>> On Dec 3, 2007, at 9:33 AM, Samuel B. Quiring wrote:
>>
>>> Leonard,
>>>
>>> Is there any documentation anywhere on this? Do you know of an
>>> example iText program that I could look at?
>>>
>>> -Sam
>>> ----- Original Message -----
>>> From: Leonard Rosenthol
>>> To: Post all your questions about iText here
>>> Sent: Monday, December 03, 2007 4:20 AM
>>> Subject: Re: [iText-questions] How to change a PDF but preserve
>>> the rights
>>>
>>> It _IS_ possible to fill in a PDF that has been "Reader Enabled"
>>> w/ o violating the rights - but it MUST be done in a very
>>> specific fashion using "append mode" on the source PDF AND only
>>> modifying a limited number of objects in the PDF.
>>>
>>> So yes, if you are going to create a whole new PDF - you'll
>>> break the "Reader Enabling". If you're careful about what you
>>> do, and how you do it, you CAN accomplish your goal.
>>>
>>> Leonard
>>>
>>>
>>> On Dec 3, 2007, at 2:05 AM, Samuel B. Quiring wrote:
>>>
>>>> I have a PDF containing an XFA form; isXfaPresent() == true.
>>>> The PDF was authored so that it can be opened in Adobe Reader,
>>>> fields in the form can be filled, and the form can be saved by
>>>> Reader to the file system.
>>>>
>>>> Using iText I have read in the PDF, obtained the XfaForm,
>>>> changed values in the XML Document, and written a new PDF to
>>>> the file system.
>>>>
>>>> The PDF I write out contains the values I put into the XML, but
>>>> the rights to save the PDF from Reader have been lost. Is this
>>>> expected? Other features of the original PDF are also lost in
>>>> the newly-written PDF.
>>>>
>>>> I wrote the changed PDF to a new file. If this is the reason
>>>> the save rights were lost, is there a way I can modify the
>>>> existing PDF in place so that the rights to save the file from
>>>> Adobe Reader are maintained?
>>>>
>>>> -Sam
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>>>
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