Add CPDSDK_Annot::AsBAAnnot() checked downcast method
XFA introduces some additional subclasses, so it doesn't hurt
to be sure in all cases before making a static cast.
Change-Id: I7447ca58be0b57201b39ba40a3fc5f47505cee58
Reviewed-on: https://pdfium-review.googlesource.com/39013
Commit-Queue: Lei Zhang <thestig@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
diff --git a/fpdfsdk/cpdfsdk_annot.cpp b/fpdfsdk/cpdfsdk_annot.cpp
index cfd87b3..75967a3 100644
--- a/fpdfsdk/cpdfsdk_annot.cpp
+++ b/fpdfsdk/cpdfsdk_annot.cpp
@@ -27,6 +27,10 @@
CPDFSDK_Annot::~CPDFSDK_Annot() {}
+CPDFSDK_BAAnnot* CPDFSDK_Annot::AsBAAnnot() {
+ return nullptr;
+}
+
#ifdef PDF_ENABLE_XFA
bool CPDFSDK_Annot::IsXFAField() {
