include/root/TGTextBuffer.h

0001 // @(#)root/gui:$Id$
0002 // Author: Fons Rademakers   05/05/98
0003
0004 /*************************************************************************
0005  * Copyright (C) 1995-2021, Rene Brun and Fons Rademakers.               *
0006  * All rights reserved.                                                  *
0007  *                                                                       *
0008  * For the licensing terms see $ROOTSYS/LICENSE.                         *
0009  * For the list of contributors see $ROOTSYS/README/CREDITS.             *
0010  *************************************************************************/
0011
0012 #ifndef ROOT_TGTextBuffer
0013 #define ROOT_TGTextBuffer
0014
0015 #include "TString.h"
0016
0017 class TGTextBuffer {
0018
0019 private:
0020    TString    fBuffer;
0021
0022    TGTextBuffer(const TGTextBuffer&) = delete;
0023    TGTextBuffer& operator=(const TGTextBuffer&) = delete;
0024
0025 public:
0026    TGTextBuffer() : fBuffer() {}
0027    TGTextBuffer(Int_t length): fBuffer(length) {}
0028    virtual ~TGTextBuffer() {}
0029
0030    UInt_t GetTextLength() const { return fBuffer.Length(); }
0031    UInt_t GetBufferLength() const { return fBuffer.Capacity(); }
0032    const char *GetString() const { return fBuffer.Data(); }
0033
0034    void AddText(Int_t pos, const char *text) { fBuffer.Insert(pos, text); }
0035    void AddText(Int_t pos, const char *text, Int_t length) { fBuffer.Insert(pos, text, length); }
0036    void RemoveText(Int_t pos, Int_t length) { fBuffer.Remove(pos, length); }
0037    void Clear() { fBuffer.Remove(0, fBuffer.Length()); }
0038
0039    ClassDef(TGTextBuffer,0)  // Text buffer used by widgets like TGTextEntry, etc.
0040 };
0041
0042 #endif