mirror of
https://github.com/LongSoft/UEFITool.git
synced 2024-11-29 11:28:22 +08:00
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
|
#ifndef COMMANDS_H
|
||
|
|
#define COMMANDS_H
|
||
|
|
|
||
|
|
/** \cond docNever */
|
||
|
|
|
||
|
|
#include <QUndoStack>
|
||
|
|
|
||
|
|
#include "chunks.h"
|
||
|
|
|
||
|
|
/*! CharCommand is a class to provid undo/redo functionality in QHexEdit.
|
||
|
|
A QUndoCommand represents a single editing action on a document. CharCommand
|
||
|
|
is responsable for manipulations on single chars. It can insert. overwrite and
|
||
|
|
remove characters. A manipulation stores allways two actions
|
||
|
|
1. redo (or do) action
|
||
|
|
2. undo action.
|
||
|
|
|
||
|
|
CharCommand also supports command compression via mergeWidht(). This allows
|
||
|
|
the user to execute a undo command contation e.g. 3 steps in a single command.
|
||
|
|
If you for example insert a new byt "34" this means for the editor doing 3
|
||
|
|
steps: insert a "00", overwrite it with "03" and the overwrite it with "34". These
|
||
|
|
3 steps are combined into a single step, insert a "34".
|
||
|
|
|
||
|
|
The byte array oriented commands are just put into a set of single byte commands,
|
||
|
|
which are pooled together with the macroBegin() and macroEnd() functionality of
|
||
|
|
Qt's QUndoStack.
|
||
|
|
*/
|
||
|
|
|
||
|
|
class UndoStack : public QUndoStack
|
||
|
|
{
|
||
|
|
Q_OBJECT
|
||
|
|
|
||
|
|
public:
|
||
|
|
UndoStack(Chunks *chunks, QObject * parent=0);
|
||
|
|
void insert(qint64 pos, char c);
|
||
|
|
void insert(qint64 pos, const QByteArray &ba);
|
||
|
|
void removeAt(qint64 pos, qint64 len=1);
|
||
|
|
void overwrite(qint64 pos, char c);
|
||
|
|
void overwrite(qint64 pos, int len, const QByteArray &ba);
|
||
|
|
|
||
|
|
private:
|
||
|
|
Chunks * _chunks;
|
||
|
|
QObject * _parent;
|
||
|
|
};
|
||
|
|
|
||
|
|
/** \endcond docNever */
|
||
|
|
|
||
|
|
#endif // COMMANDS_H
|