Split fpdfsdk/fsdk_baseform.h into individual classes.

fpdfsdk/include/cba_annotiterator.h

Index: fpdfsdk/include/cba_annotiterator.h
diff --git a/fpdfsdk/include/cba_annotiterator.h b/fpdfsdk/include/cba_annotiterator.h
new file mode 100644
index 0000000000000000000000000000000000000000..6161cbc8147e0d8d423c2f393dfc4cc45409d59a
--- /dev/null
+++ b/fpdfsdk/include/cba_annotiterator.h
@@ -0,0 +1,49 @@
+// Copyright 2016 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#ifndef FPDFSDK_INCLUDE_CBA_ANNOTITERATOR_H_
+#define FPDFSDK_INCLUDE_CBA_ANNOTITERATOR_H_
+
+#include <vector>
+
+#include "core/fxcrt/include/fx_coordinates.h"
+#include "core/fxcrt/include/fx_string.h"
+
+class CPDFSDK_Annot;
+class CPDFSDK_PageView;
+
+class CBA_AnnotIterator {
+ public:
+  enum TabOrder { STRUCTURE = 0, ROW, COLUMN };
+
+  CBA_AnnotIterator(CPDFSDK_PageView* pPageView,
+                    const CFX_ByteString& sType,
+                    const CFX_ByteString& sSubType);
+  ~CBA_AnnotIterator();
+
+  CPDFSDK_Annot* GetFirstAnnot();
+  CPDFSDK_Annot* GetLastAnnot();
+  CPDFSDK_Annot* GetNextAnnot(CPDFSDK_Annot* pAnnot);
+  CPDFSDK_Annot* GetPrevAnnot(CPDFSDK_Annot* pAnnot);
+
+ private:
+  void GenerateResults();
+  static CFX_FloatRect GetAnnotRect(const CPDFSDK_Annot* pAnnot);
+
+  // Function signature compatible with std::sort().
+  static bool CompareByLeftAscending(const CPDFSDK_Annot* p1,
+                                     const CPDFSDK_Annot* p2);
+  static bool CompareByTopDescending(const CPDFSDK_Annot* p1,
+                                     const CPDFSDK_Annot* p2);
+
+  TabOrder m_eTabOrder;
+  CPDFSDK_PageView* m_pPageView;
+  CFX_ByteString m_sType;
+  CFX_ByteString m_sSubType;
+  std::vector<CPDFSDK_Annot*> m_Annots;
+};
+
+#endif  // FPDFSDK_INCLUDE_CBA_ANNOTITERATOR_H_