Thanks a lot for your answer.
I have studied the code snippet of Bruno Lowagie as you advised me, but
I didn't have success. I failed even to program the reading of JavaScript which
lies behind buttons. The problem is that sometimes the JavaScript is in
a stream. In this case I easily get an indirect reference to the stream object.
But if I try to resolve this indirect reference with PdfReader.getPdfObject, the
resulting stream object is empty.
I have my code attached to this mail.
What is wrong with my approach?
Yours sincerly
Joachim Sieglen
Java-Entwickler
Form-Solutions
Winzerstr. 54
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Fon: +49 7082 9464-0
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-----Ursprungliche Nachricht-----
Von: 1T3XT info mailto:[EMAIL PROTECTED]
Gesendet: 14.08.2008 16:21:24
An: Post all your questions about iText here
mailto:[email protected]
Betreff: Re: [iText-questions] Re ading and writing Javascript
Joachim Sieglen wrote:
> Hello everybody,
>
> I have to change (reading, modifiying and writing back) Javascript
which is
> no document-level Javascript but lies behind a button (and is
executed when
> the button is clicked). Is there a way to do this programmatically
using
> iText?
Your question was already answered (and correct me if I'm
wrong, but it was in answer to one of your questions):
http://1t3xt.info/examples/browse/?page=example&id=372
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public void readAndWriteJS(AcroFields fieldsAF) {
HashMap fieldsHM = fieldsAF.getFields();
String itemKey = null;
try {
for (Iterator it=fieldsHM.keySet().iterator();
it.hasNext(); ){
itemKey = (String)it.next();
if
(fieldsAF.getFieldType(itemKey)==fieldsAF.FIELD_TYPE_PUSHBUTTON) {
System.out.println("Button: " +
itemKey);
Item itemField =
fieldsAF.getFieldItem(itemKey);
for (int i=0;
i<itemField.widget_refs.size(); i++){
PdfDictionary dictItem =
(PdfDictionary) PdfReader.getPdfObject((PdfObject)
itemField.widget_refs.get(i));
PdfDictionary dictA =
(PdfDictionary) PdfReader.getPdfObject(dictItem.get(PdfName.A));
if (dictA != null) {
if
(dictA.get(PdfName.S) != null) {
System.out.println(dictA.get(PdfName.S).toString());
if
(dictA.get(PdfName.S).toString().equals("/JavaScript")) {
PdfObject jsObj = dictA.get(PdfName.JS);
//System.out.println(jsObj.type());
if
(jsObj.isString())
System.out.println((dictA.get(PdfName.JS)).toString());
else if
(jsObj.isIndirect()) {
PRStream jsStream = (PRStream) PdfReader.getPdfObject(jsObj);
ByteArrayOutputStream os = new ByteArrayOutputStream();
jsStream.writeContent(os);
System.out.println("Stream: " + jsStream.getBytes().toString());
}
}
}
}
}
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
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