TGTextBuffer.h

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// @(#)root/gui:$Id$
// Author: Fons Rademakers   05/05/98
 
/*************************************************************************
 * Copyright (C) 1995-2021, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
#ifndef ROOT_TGTextBuffer
#define ROOT_TGTextBuffer
 
 
//////////////////////////////////////////////////////////////////////////
//                                                                      //
// TGTextBuffer                                                         //
//                                                                      //
// A text buffer is used in several widgets, like TGTextEntry,          //
// TGFileDialog, etc. It is a little wrapper around the powerful        //
// TString class and used for single line texts. For multi line texts   //
// use TGText.                                                          //
//                                                                      //
//////////////////////////////////////////////////////////////////////////
 
#include "TString.h"
 
 
class TGTextBuffer {
 
private:
   TString    fBuffer;
 
   TGTextBuffer(const TGTextBuffer&) = delete;
   TGTextBuffer& operator=(const TGTextBuffer&) = delete;
 
public:
   TGTextBuffer() : fBuffer() {}
   TGTextBuffer(Int_t length): fBuffer(length) {}
   virtual ~TGTextBuffer() {}
 
   UInt_t GetTextLength() const { return fBuffer.Length(); }
   UInt_t GetBufferLength() const { return fBuffer.Capacity(); }
   const char *GetString() const { return fBuffer.Data(); }
 
   void AddText(Int_t pos, const char *text) { fBuffer.Insert(pos, text); }
   void AddText(Int_t pos, const char *text, Int_t length) { fBuffer.Insert(pos, text, length); }
   void RemoveText(Int_t pos, Int_t length) { fBuffer.Remove(pos, length); }
   void Clear() { fBuffer.Remove(0, fBuffer.Length()); }
 
   ClassDef(TGTextBuffer,0)  // Text buffer used by widgets like TGTextEntry, etc.
};
 
#endif