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#ifndef UNDOBUFFER_H
#define UNDOBUFFER_H
#include <QObject>
#include "dive.h"
class UndoCommand {
private:
dive* stateBefore;
dive* stateAfter;
QString name;
public:
explicit UndoCommand(QString commandName, dive* affectedDive);
void setStateAfter(dive* affectedDive) { stateAfter = affectedDive; }
void undo();
void redo();
};
class UndoBuffer : public QObject
{
Q_OBJECT
public:
explicit UndoBuffer(QObject *parent = 0);
~UndoBuffer();
bool canUndo();
bool canRedo();
UndoCommand *current() const { return list.at(curIdx - 1); }
private:
QList<UndoCommand*> list;
int curIdx;
public slots:
void redo();
void undo();
void recordbefore(QString commandName, dive *affectedDive);
void recordAfter(dive *affectedDive);
};
#endif // UNDOBUFFER_H
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