File indexing completed on 2024-05-05 05:53:47

 /*
     SPDX-FileCopyrightText: 1997, 1998 Lars Doelle <lars.doelle@on-line.de>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #ifndef HISTORYSCROLL_H
 #define HISTORYSCROLL_H
 
 // STD
 #include <memory>
 
 #include "konsoleprivate_export.h"
 
 // Konsole
 #include "../characters/Character.h"
 
 // Qt
 #include <QVector>
 
 namespace Konsole
 {
 //////////////////////////////////////////////////////////////////////
 // Abstract base class for file and buffer versions
 //////////////////////////////////////////////////////////////////////
 class HistoryType;
 
 class KONSOLEPRIVATE_EXPORT HistoryScroll
 {
 public:
     explicit HistoryScroll(HistoryType *);
     virtual ~HistoryScroll();
 
     virtual bool hasScroll() const;
 
     // access to history
     virtual int getLines() const = 0;
     virtual int getMaxLines() const = 0;
     virtual int getLineLen(const int lineno) const = 0;
     virtual void getCells(const int lineno, const int colno, const int count, Character res[]) const = 0;
     virtual bool isWrappedLine(const int lineNumber) const = 0;
     virtual LineProperty getLineProperty(const int lineno) const = 0;
     virtual void setLineProperty(const int lineno, LineProperty prop) = 0;
 
     // adding lines.
     virtual void addCells(const Character a[], const int count) = 0;
     virtual void addCellsMove(Character a[], const int count) = 0;
     // convenience method - this is virtual so that subclasses can take advantage
     // of QVector's implicit copying
     virtual void addCellsVector(const QVector<Character> &cells)
     {
         addCells(cells.data(), cells.size());
     }
 
     virtual void addLine(const LineProperty lineProperty = LineProperty()) = 0;
 
     // modify history
     virtual void removeCells() = 0;
     virtual int reflowLines(const int columns, std::map<int, int> *deltas = nullptr) = 0;
 
     //
     // FIXME:  Passing around constant references to HistoryType instances
     // is very unsafe, because those references will no longer
     // be valid if the history scroll is deleted.
     //
     const HistoryType &getType() const
     {
         return *_historyType;
     }
 
 protected:
     std::unique_ptr<HistoryType> _historyType;
     const int MAX_REFLOW_LINES = 20000;
 };
 
 }
 
 #endif