Pass objects instead of strings for undo/redo records.

xfa/fwl/basewidget/ifwl_combobox.h

 // Copyright 2014 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 XFA_FWL_BASEWIDGET_IFWL_COMBOBOX_H_
 #define XFA_FWL_BASEWIDGET_IFWL_COMBOBOX_H_
 
 #include "xfa/fwl/basewidget/ifwl_listbox.h"
 #include "xfa/fxgraphics/include/cfx_graphics.h"
 
 class CFWL_WidgetImpProperties;
+class IFDE_TxtEdtDoRecord;
 class IFWL_ComboBox;
 
 #define FWL_CLASS_ComboBox L"FWL_COMBOBOX"
 #define FWL_STYLEEXT_CMB_DropList (0L << 0)
 #define FWL_STYLEEXT_CMB_DropDown (1L << 0)
 #define FWL_STYLEEXT_CMB_Sort (1L << 1)
 #define FWL_STYLEEXT_CMB_ListDrag (1L << 2)
 #define FWL_STYLEEXT_CMB_OwnerDraw (1L << 3)
 #define FWL_STYLEEXT_CMB_EditHNear (0L << 4)
 #define FWL_STYLEEXT_CMB_EditHCenter (1L << 4)
@@ skipping 59 matching lines @@
   FWL_Error SetEditText(const CFX_WideString& wsText);
   int32_t GetEditTextLength() const;
   FWL_Error GetEditText(CFX_WideString& wsText,
                         int32_t nStart = 0,
                         int32_t nCount = -1) const;
   FWL_Error SetEditSelRange(int32_t nStart, int32_t nCount = -1);
   int32_t GetEditSelRange(int32_t nIndex, int32_t& nStart);
   int32_t GetEditLimit();
   FWL_Error SetEditLimit(int32_t nLimit);
   FWL_Error EditDoClipboard(int32_t iCmd);
-  FX_BOOL EditRedo(const CFX_ByteStringC& bsRecord);
-  FX_BOOL EditUndo(const CFX_ByteStringC& bsRecord);
+  FX_BOOL EditRedo(const IFDE_TxtEdtDoRecord* pRecord);
+  FX_BOOL EditUndo(const IFDE_TxtEdtDoRecord* pRecord);
   IFWL_ListBox* GetListBoxt();
   FX_BOOL AfterFocusShowDropList();
   FWL_Error OpenDropDownList(FX_BOOL bActivate);
   FX_BOOL EditCanUndo();
   FX_BOOL EditCanRedo();
   FX_BOOL EditUndo();
   FX_BOOL EditRedo();
   FX_BOOL EditCanCopy();
   FX_BOOL EditCanCut();
   FX_BOOL EditCanSelectAll();
   FX_BOOL EditCopy(CFX_WideString& wsCopy);
   FX_BOOL EditCut(CFX_WideString& wsCut);
   FX_BOOL EditPaste(const CFX_WideString& wsPaste);
   FX_BOOL EditSelectAll();
   FX_BOOL EditDelete();
   FX_BOOL EditDeSelect();
   FWL_Error GetBBox(CFX_RectF& rect);
   FWL_Error EditModifyStylesEx(uint32_t dwStylesExAdded,
                                uint32_t dwStylesExRemoved);
 
  protected:
   IFWL_ComboBox();
 };
 
 #endif  // XFA_FWL_BASEWIDGET_IFWL_COMBOBOX_H_