1 files changed, 92 insertions, 0 deletions
diff --git a/xfa/src/fee/fde_txtedtbuf.h b/xfa/src/fee/fde_txtedtbuf.h
new file mode 100644
index 0000000000..1b2d19f7e8
--- /dev/null
+++ b/xfa/src/fee/fde_txtedtbuf.h
@@ -0,0 +1,92 @@
+// 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_SRC_FEE_FDE_TXTEDTBUF_H_
+#define XFA_SRC_FEE_FDE_TXTEDTBUF_H_
+
+#include "xfa/src/fee/ifde_txtedtbuf.h"
+#include "xfa/src/fee/ifde_txtedtengine.h"
+#include "xfa/src/fgas/include/fx_mem.h"
+
+class IFX_CharIter;
+class CFDE_TxtEdtBuf;
+
+class CFDE_TxtEdtBufIter : public IFX_CharIter {
+ public:
+  CFDE_TxtEdtBufIter(CFDE_TxtEdtBuf* pBuf, FX_WCHAR wcAlias = 0);
+
+  virtual void Release();
+  virtual FX_BOOL Next(FX_BOOL bPrev = FALSE);
+  virtual FX_WCHAR GetChar();
+  virtual void SetAt(int32_t nIndex);
+  virtual int32_t GetAt() const;
+  virtual FX_BOOL IsEOF(FX_BOOL bTail = TRUE) const;
+  virtual IFX_CharIter* Clone();
+
+ protected:
+  ~CFDE_TxtEdtBufIter();
+
+ private:
+  CFDE_TxtEdtBuf* m_pBuf;
+  int32_t m_nCurChunk;
+  int32_t m_nCurIndex;
+  int32_t m_nIndex;
+  FX_WCHAR m_Alias;
+};
+class CFDE_TxtEdtBuf : public IFDE_TxtEdtBuf {
+  friend class CFDE_TxtEdtBufIter;
+  struct _FDE_CHUNKHEADER {
+    int32_t nUsed;
+    FX_WCHAR wChars[1];
+  };
+  typedef _FDE_CHUNKHEADER FDE_CHUNKHEADER;
+  typedef _FDE_CHUNKHEADER* FDE_LPCHUNKHEADER;
+  struct _FDE_CHUNKPLACE {
+    int32_t nChunkIndex;
+    int32_t nCharIndex;
+  };
+  typedef _FDE_CHUNKPLACE FDE_CHUNKPLACE;
+  typedef _FDE_CHUNKPLACE* FDE_LPCHUNKPLACE;
+
+ public:
+  CFDE_TxtEdtBuf(int32_t nDefChunkSize = FDE_DEFCHUNKLENGTH);
+
+  virtual void Release();
+  virtual FX_BOOL SetChunkSize(int32_t nChunkSize);
+  virtual int32_t GetChunkSize() const;
+  virtual int32_t GetTextLength() const;
+  virtual void SetText(const CFX_WideString& wsText);
+  virtual void GetText(CFX_WideString& wsText) const;
+  virtual FX_WCHAR GetCharByIndex(int32_t nIndex) const;
+  virtual void GetRange(CFX_WideString& wsText,
+                        int32_t nBegine,
+                        int32_t nCount = -1) const;
+
+  virtual void Insert(int32_t nPos,
+                      const FX_WCHAR* lpText,
+                      int32_t nLength = 1);
+  virtual void Delete(int32_t nIndex, int32_t nLength = 1);
+  virtual void Clear(FX_BOOL bRelease = TRUE);
+
+  virtual FX_BOOL Optimize(IFX_Pause* pPause = NULL);
+
+ protected:
+  virtual ~CFDE_TxtEdtBuf();
+
+ private:
+  void ResetChunkBuffer(int32_t nDefChunkCount, int32_t nChunkSize);
+  int32_t CP2Index(const FDE_CHUNKPLACE& cp) const;
+  void Index2CP(int32_t nIndex, FDE_CHUNKPLACE& cp) const;
+
+  int32_t m_nChunkSize;
+
+  int32_t m_nTotal;
+  FX_BOOL m_bChanged;
+  CFX_PtrArray m_Chunks;
+  IFX_MEMAllocator* m_pAllocator;
+};
+
+#endif  // XFA_SRC_FEE_FDE_TXTEDTBUF_H_