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Code Issues Releases Wiki Activity

Form field for non-widget just returns null

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This commit is contained in:
Jay Berkenbilt 2021-02-18 10:20:30 -05:00
parent 0a52e60ece
commit 0765872295
2 changed files with 4 additions and 6 deletions
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4
include/qpdf/QPDFAcroFormDocumentHelper.hh
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@ -134,8 +134,8 @@ class QPDFAcroFormDocumentHelper: public QPDFDocumentHelper
// field dictionary, the underlying object will be the same, but
// this is not always the case. Note that if you call this method
// with an annotation that is not a widget annotation, there will
// not be an associated field, and this method will raise an
// exception.
// not be an associated field, and this method will return a
// helper associated with a null object (isNull() == true).
QPDF_DLL
QPDFFormFieldObjectHelper
getFieldForAnnotation(QPDFAnnotationObjectHelper);

6
libqpdf/QPDFAcroFormDocumentHelper.cc
View File

@ -70,16 +70,14 @@ QPDFFormFieldObjectHelper
QPDFAcroFormDocumentHelper::getFieldForAnnotation(QPDFAnnotationObjectHelper h)
{
QPDFObjectHandle oh = h.getObjectHandle();
QPDFFormFieldObjectHelper result(QPDFObjectHandle::newNull());
if (! (oh.isDictionary() &&
oh.getKey("/Subtype").isName() &&
(oh.getKey("/Subtype").getName() == "/Widget")))
{
throw std::logic_error(
"QPDFAnnotationObjectHelper::getFieldForAnnotation called for"
" non-/Widget annotation");
return result;
}
analyze();
QPDFFormFieldObjectHelper result(QPDFObjectHandle::newNull());
QPDFObjGen og(oh.getObjGen());
if (this->m->annotation_to_field.count(og))
{