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274 lines
6.8 KiB
274 lines
6.8 KiB
15 years ago
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/*
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This file is part of Konsole, an X terminal.
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Copyright (C) 1997,1998 by Lars Doelle <lars.doelle@on-line.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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*/
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#ifndef TEHISTORY_H
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#define TEHISTORY_H
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#include <qcstring.h>
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#include <qptrvector.h>
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#include <qbitarray.h>
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#include <ktempfile.h>
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#include "TECommon.h"
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#if 1
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/*
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An extendable tmpfile(1) based buffer.
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*/
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class HistoryFile
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{
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public:
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HistoryFile();
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virtual ~HistoryFile();
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virtual void add(const unsigned char* bytes, int len);
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virtual void get(unsigned char* bytes, int len, int loc);
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virtual int len();
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private:
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int ion;
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int length;
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KTempFile tmpFile;
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};
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#endif
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//////////////////////////////////////////////////////////////////////
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//////////////////////////////////////////////////////////////////////
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// Abstract base class for file and buffer versions
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//////////////////////////////////////////////////////////////////////
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class HistoryType;
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class HistoryScroll
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{
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public:
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HistoryScroll(HistoryType*);
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virtual ~HistoryScroll();
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virtual bool hasScroll();
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// access to history
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virtual int getLines() = 0;
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virtual int getLineLen(int lineno) = 0;
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virtual void getCells(int lineno, int colno, int count, ca res[]) = 0;
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virtual bool isWrappedLine(int lineno) = 0;
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// backward compatibility (obsolete)
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ca getCell(int lineno, int colno) { ca res; getCells(lineno,colno,1,&res); return res; }
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// adding lines.
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virtual void addCells(ca a[], int count) = 0;
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virtual void addLine(bool previousWrapped=false) = 0;
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const HistoryType& getType() { return *m_histType; }
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protected:
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HistoryType* m_histType;
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};
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#if 1
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//////////////////////////////////////////////////////////////////////
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// File-based history (e.g. file log, no limitation in length)
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//////////////////////////////////////////////////////////////////////
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class HistoryScrollFile : public HistoryScroll
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{
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public:
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HistoryScrollFile(const QString &logFileName);
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virtual ~HistoryScrollFile();
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virtual int getLines();
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virtual int getLineLen(int lineno);
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virtual void getCells(int lineno, int colno, int count, ca res[]);
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virtual bool isWrappedLine(int lineno);
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virtual void addCells(ca a[], int count);
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virtual void addLine(bool previousWrapped=false);
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private:
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int startOfLine(int lineno);
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QString m_logFileName;
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HistoryFile index; // lines Row(int)
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HistoryFile cells; // text Row(ca)
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HistoryFile lineflags; // flags Row(unsigned char)
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};
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//////////////////////////////////////////////////////////////////////
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// Buffer-based history (limited to a fixed nb of lines)
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//////////////////////////////////////////////////////////////////////
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class HistoryScrollBuffer : public HistoryScroll
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{
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public:
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typedef QMemArray<ca> histline;
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HistoryScrollBuffer(unsigned int maxNbLines = 1000);
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virtual ~HistoryScrollBuffer();
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virtual int getLines();
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virtual int getLineLen(int lineno);
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virtual void getCells(int lineno, int colno, int count, ca res[]);
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virtual bool isWrappedLine(int lineno);
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virtual void addCells(ca a[], int count);
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virtual void addLine(bool previousWrapped=false);
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void setMaxNbLines(unsigned int nbLines);
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unsigned int maxNbLines() { return m_maxNbLines; }
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private:
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int adjustLineNb(int lineno);
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QPtrVector<histline> m_histBuffer;
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QBitArray m_wrappedLine;
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unsigned int m_maxNbLines;
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unsigned int m_nbLines;
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unsigned int m_arrayIndex;
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};
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#endif
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//////////////////////////////////////////////////////////////////////
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// Nothing-based history (no history :-)
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//////////////////////////////////////////////////////////////////////
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class HistoryScrollNone : public HistoryScroll
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{
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public:
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HistoryScrollNone();
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virtual ~HistoryScrollNone();
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virtual bool hasScroll();
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virtual int getLines();
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virtual int getLineLen(int lineno);
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virtual void getCells(int lineno, int colno, int count, ca res[]);
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virtual bool isWrappedLine(int lineno);
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virtual void addCells(ca a[], int count);
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virtual void addLine(bool previousWrapped=false);
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};
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//////////////////////////////////////////////////////////////////////
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// BlockArray-based history
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//////////////////////////////////////////////////////////////////////
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#include "BlockArray.h"
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#include <qintdict.h>
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class HistoryScrollBlockArray : public HistoryScroll
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{
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public:
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HistoryScrollBlockArray(size_t size);
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virtual ~HistoryScrollBlockArray();
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virtual int getLines();
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virtual int getLineLen(int lineno);
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virtual void getCells(int lineno, int colno, int count, ca res[]);
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virtual bool isWrappedLine(int lineno);
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virtual void addCells(ca a[], int count);
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virtual void addLine(bool previousWrapped=false);
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protected:
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BlockArray m_blockArray;
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QIntDict<size_t> m_lineLengths;
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};
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//////////////////////////////////////////////////////////////////////
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// History type
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//////////////////////////////////////////////////////////////////////
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class HistoryType
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{
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public:
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HistoryType();
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virtual ~HistoryType();
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virtual bool isOn() const = 0;
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virtual unsigned int getSize() const = 0;
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virtual HistoryScroll* getScroll(HistoryScroll *) const = 0;
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};
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class HistoryTypeNone : public HistoryType
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{
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public:
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HistoryTypeNone();
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virtual bool isOn() const;
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virtual unsigned int getSize() const;
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virtual HistoryScroll* getScroll(HistoryScroll *) const;
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};
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class HistoryTypeBlockArray : public HistoryType
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{
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public:
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HistoryTypeBlockArray(size_t size);
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virtual bool isOn() const;
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virtual unsigned int getSize() const;
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virtual HistoryScroll* getScroll(HistoryScroll *) const;
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protected:
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size_t m_size;
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};
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#if 1 // Disabled for now
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class HistoryTypeFile : public HistoryType
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{
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public:
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HistoryTypeFile(const QString& fileName=QString::null);
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virtual bool isOn() const;
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virtual const QString& getFileName() const;
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virtual unsigned int getSize() const;
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virtual HistoryScroll* getScroll(HistoryScroll *) const;
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protected:
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QString m_fileName;
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};
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class HistoryTypeBuffer : public HistoryType
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{
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public:
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HistoryTypeBuffer(unsigned int nbLines);
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virtual bool isOn() const;
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virtual unsigned int getSize() const;
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virtual HistoryScroll* getScroll(HistoryScroll *) const;
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protected:
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unsigned int m_nbLines;
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};
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#endif
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#endif // TEHISTORY_H
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