Travis Schneeberger created PDFBOX-3753:
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Summary: setting a RadioButton with export values does not update
the appearance
Key: PDFBOX-3753
URL: https://issues.apache.org/jira/browse/PDFBOX-3753
Project: PDFBox
Issue Type: Bug
Affects Versions: 2.0.5
Reporter: Travis Schneeberger
Fix For: 2.0.6
Setting a RadioButton with export values does not update the appearance. The
attached form has two sets of RadioButtons. One called "Group1" and one called
"_6_ Treatment of Program Inco_nwAbuWIn0JWsW9e68RWN8A". "Group1" is easy to
set or unset. I noticed during debugging doesn't have any "ExportValues" and
so the value is set in a different way than the other set of RadioButtons.
"_6_ Treatment of Program Inco_nwAbuWIn0JWsW9e68RWN8A" does have ExportValues
and this appears to be related to the problems with setting the value.
For example:
{code}
try(PDDocument pdfDocument = PDDocument.load(new
File("/Users/travis/Desktop/fdpAttachment2.pdf"))) {
final PDDocumentCatalog docCatalog =
pdfDocument.getDocumentCatalog();
final PDAcroForm acroForm = docCatalog.getAcroForm();
final PDRadioButton group1Field = (PDRadioButton)
acroForm.getField("Group1");
group1Field.setValue("NIH");
final PDRadioButton topiField = (PDRadioButton)
acroForm.getField("_6_ Treatment of Program Inco_nwAbuWIn0JWsW9e68RWN8A");
topiField.setValue("Additive");
pdfDocument.save("/Users/travis/Desktop/fdpAttachment2-radio-buttons.pdf");
}
{code}
Notice in "fdpAttachment2-radio-buttons.pdf" that "Group1" RadioButton has NIH
toggled while "_6_ Treatment of Program Inco_nwAbuWIn0JWsW9e68RWN8A" is not
toggled even though "Additive" is a valid value.
The workaround for this is to set the appearance state (AS). I'm still
learning the pdfbox api so I apologize if my workaround is a little strange.
{code}
try(PDDocument pdfDocument = PDDocument.load(new
File("/Users/travis/Desktop/fdpAttachment2.pdf"))) {
final PDDocumentCatalog docCatalog =
pdfDocument.getDocumentCatalog();
final PDAcroForm acroForm = docCatalog.getAcroForm();
final PDRadioButton group1Field = (PDRadioButton)
acroForm.getField("Group1");
group1Field.setValue("NIH");
final PDRadioButton topiField = (PDRadioButton)
acroForm.getField("_6_ Treatment of Program Inco_nwAbuWIn0JWsW9e68RWN8A");
topiField.setValue("Additive");
//Additive ends up being index 0. If I add an AS with "0" it
toggle the Additive radio button
final int idx =
topiField.getExportValues().indexOf((topiField).getValue());
topiField.getWidgets().forEach(w -> {
PDAppearanceEntry appearanceEntry =
w.getAppearance().getNormalAppearance();
if (((COSDictionary)
appearanceEntry.getCOSObject()).containsKey(String.valueOf(idx))) {
w.getCOSObject().setName(COSName.AS, String.valueOf(idx));
}
});
pdfDocument.save("/Users/travis/Desktop/fdpAttachment2-radio-buttons-workaround.pdf");
}
{code}
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