Make more CPDFSDK_AnnotIterator members const.

Change-Id: I1c387ad9f6e1e4e87ebd7b778789617f93cf2c76
Reviewed-on: https://pdfium-review.googlesource.com/c/43614
Reviewed-by: Henrique Nakashima <hnakashima@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>

2 files changed, 16 insertions, 13 deletions

diff --git a/fpdfsdk/cpdfsdk_annotiterator.cpp b/fpdfsdk/cpdfsdk_annotiterator.cpp
index 0dcb5bd917..d85dbe46eb 100644
--- a/fpdfsdk/cpdfsdk_annotiterator.cpp
+++ b/fpdfsdk/cpdfsdk_annotiterator.cpp
@@ -26,20 +26,23 @@ bool CompareByTopDescending(const CPDFSDK_Annot* p1, const CPDFSDK_Annot* p2) {
   return GetAnnotRect(p1).top > GetAnnotRect(p2).top;
 }
 
+CPDFSDK_AnnotIterator::TabOrder GetTabOrder(CPDFSDK_PageView* pPageView) {
+  CPDF_Page* pPDFPage = pPageView->GetPDFPage();
+  ByteString sTabs = pPDFPage->GetDict()->GetStringFor("Tabs");
+  if (sTabs == "R")
+    return CPDFSDK_AnnotIterator::ROW;
+  if (sTabs == "C")
+    return CPDFSDK_AnnotIterator::COLUMN;
+  return CPDFSDK_AnnotIterator::STRUCTURE;
+}
+
 }  // namespace
 
 CPDFSDK_AnnotIterator::CPDFSDK_AnnotIterator(CPDFSDK_PageView* pPageView,
                                              CPDF_Annot::Subtype nAnnotSubtype)
-    : m_eTabOrder(STRUCTURE),
-      m_pPageView(pPageView),
-      m_nAnnotSubtype(nAnnotSubtype) {
-  CPDF_Page* pPDFPage = m_pPageView->GetPDFPage();
-  ByteString sTabs = pPDFPage->GetDict()->GetStringFor("Tabs");
-  if (sTabs == "R")
-    m_eTabOrder = ROW;
-  else if (sTabs == "C")
-    m_eTabOrder = COLUMN;
-
+    : m_pPageView(pPageView),
+      m_nAnnotSubtype(nAnnotSubtype),
+      m_eTabOrder(GetTabOrder(pPageView)) {
   GenerateResults();
 }
 
diff --git a/fpdfsdk/cpdfsdk_annotiterator.h b/fpdfsdk/cpdfsdk_annotiterator.h
index 723550edc5..fd7cbdc6b1 100644
--- a/fpdfsdk/cpdfsdk_annotiterator.h
+++ b/fpdfsdk/cpdfsdk_annotiterator.h
@@ -19,7 +19,7 @@ class CPDFSDK_PageView;
 
 class CPDFSDK_AnnotIterator {
  public:
-  enum TabOrder { STRUCTURE = 0, ROW, COLUMN };
+  enum TabOrder : uint8_t { STRUCTURE = 0, ROW, COLUMN };
 
   CPDFSDK_AnnotIterator(CPDFSDK_PageView* pPageView,
                         CPDF_Annot::Subtype nAnnotSubtype);
@@ -37,9 +37,9 @@ class CPDFSDK_AnnotIterator {
   void AddSelectedToAnnots(std::vector<CPDFSDK_Annot*>* sa,
                            std::vector<size_t>* aSelect);
 
-  TabOrder m_eTabOrder;
-  UnownedPtr<CPDFSDK_PageView> m_pPageView;
+  UnownedPtr<CPDFSDK_PageView> const m_pPageView;
   CPDF_Annot::Subtype m_nAnnotSubtype;
+  const TabOrder m_eTabOrder;
   std::vector<CPDFSDK_Annot*> m_Annots;
 };