commit 16760b5c30ded37f12e571a58a4147d6427aa3a5
author Zhouhan Chen <zhouhan@google.com> Wed Aug 12 05:14:00 2020 +0000
committer Chromium commit bot <commit-bot@chromium.org> Wed Aug 12 05:14:00 2020 +0000
tree fff353caab2794988dc3e2d2316f223ee12fe268
parent e0d3c50e2e498a9782c79b4099ba017685bb2a8f

Add an experimental API to surface a page's additional action.

Add an API to surface a page's additional action (/AA) to the embedder.
FORM_GetPageAAction() returns either a page open action or a page close action, depending on the input type.

Change-Id: I435d04ddd6bd0755d651a3cbb6e1abd93b81d356
Reviewed-on: https://pdfium-review.googlesource.com/c/pdfium/+/72590
Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

fpdfsdk/fpdf_doc.cpp

diff --git a/fpdfsdk/fpdf_doc.cpp b/fpdfsdk/fpdf_doc.cpp
index b6a5ed4..94a1d04 100644
--- a/fpdfsdk/fpdf_doc.cpp
+++ b/fpdfsdk/fpdf_doc.cpp
@@ -10,6 +10,7 @@
 #include <set>
 #include <utility>
 
+#include "constants/form_fields.h"
 #include "core/fpdfapi/page/cpdf_annotcontext.h"
 #include "core/fpdfapi/page/cpdf_page.h"
 #include "core/fpdfapi/parser/cpdf_array.h"
@@ -18,12 +19,14 @@
 #include "core/fpdfapi/parser/cpdf_number.h"
 #include "core/fpdfapi/parser/cpdf_string.h"
 #include "core/fpdfapi/parser/fpdf_parser_decode.h"
+#include "core/fpdfdoc/cpdf_aaction.h"
 #include "core/fpdfdoc/cpdf_bookmark.h"
 #include "core/fpdfdoc/cpdf_bookmarktree.h"
 #include "core/fpdfdoc/cpdf_dest.h"
 #include "core/fpdfdoc/cpdf_linklist.h"
 #include "core/fpdfdoc/cpdf_pagelabel.h"
 #include "fpdfsdk/cpdfsdk_helpers.h"
+#include "public/fpdf_formfill.h"
 #include "third_party/base/stl_util.h"
 
 namespace {
@@ -412,6 +415,30 @@
                               quad_points);
 }
 
+FPDF_EXPORT FPDF_ACTION FPDF_CALLCONV FPDF_GetPageAAction(FPDF_PAGE page,
+                                                          int aa_type) {
+  CPDF_Page* pdf_page = CPDFPageFromFPDFPage(page);
+  if (!pdf_page)
+    return nullptr;
+
+  CPDF_Dictionary* page_dict = pdf_page->GetDict();
+  CPDF_AAction aa(page_dict->GetDictFor(pdfium::form_fields::kAA));
+
+  CPDF_AAction::AActionType type;
+  if (aa_type == FPDFPAGE_AACTION_OPEN)
+    type = CPDF_AAction::kOpenPage;
+  else if (aa_type == FPDFPAGE_AACTION_CLOSE)
+    type = CPDF_AAction::kClosePage;
+  else
+    return nullptr;
+
+  if (!aa.ActionExist(type))
+    return nullptr;
+
+  CPDF_Action action = aa.GetAction(type);
+  return FPDFActionFromCPDFDictionary(action.GetDict());
+}
+
 FPDF_EXPORT unsigned long FPDF_CALLCONV
 FPDF_GetFileIdentifier(FPDF_DOCUMENT document,
                        FPDF_FILEIDTYPE id_type,