Added APIs for setting annotation flag values

1. Added APIs for getting/setting/unsetting annotation flag values in
annotation dictionaries.
  * Added an embedder test testing all the new functions.

Bug=pdfium:737

Change-Id: Ib6bbcf05d6e93c43ec4dcd7120db71bc244afdbf
Reviewed-on: https://pdfium-review.googlesource.com/7154
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 26 insertions, 0 deletions

diff --git a/fpdfsdk/fpdfannot.cpp b/fpdfsdk/fpdfannot.cpp
index 4d75e6e236..d7ab8abac1 100644
--- a/fpdfsdk/fpdfannot.cpp
+++ b/fpdfsdk/fpdfannot.cpp
@@ -705,3 +705,29 @@ DLLEXPORT unsigned long STDCALL FPDFAnnot_GetText(FPDF_ANNOTATION annot,
 
   return len;
 }
+
+DLLEXPORT int STDCALL FPDFAnnot_GetFlags(FPDF_ANNOTATION annot) {
+  if (!annot)
+    return FPDF_ANNOT_FLAG_NONE;
+
+  CPDF_Dictionary* pAnnotDict =
+      CPDFAnnotContextFromFPDFAnnotation(annot)->GetAnnotDict();
+  if (!pAnnotDict)
+    return FPDF_ANNOT_FLAG_NONE;
+
+  return pAnnotDict->GetIntegerFor("F");
+}
+
+DLLEXPORT FPDF_BOOL STDCALL FPDFAnnot_SetFlags(FPDF_ANNOTATION annot,
+                                               int flags) {
+  if (!annot)
+    return false;
+
+  CPDF_Dictionary* pAnnotDict =
+      CPDFAnnotContextFromFPDFAnnotation(annot)->GetAnnotDict();
+  if (!pAnnotDict)
+    return false;
+
+  pAnnotDict->SetNewFor<CPDF_Number>("F", flags);
+  return true;
+}