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/****************************************************************************
**
** Copyright (C) 2006-2009 fullmetalcoder <fullmetalcoder@hotmail.fr>
**
** This file is part of the Edyuk project <http://edyuk.org>
**
** This file may be used under the terms of the GNU General Public License
** version 3 as published by the Free Software Foundation and appearing in the
** file GPL.txt included in the packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
****************************************************************************/
#ifndef _QDOCUMENT_COMMAND_H_
#define _QDOCUMENT_COMMAND_H_
#include "qce-config.h"
/*!
\file qdocumentcommand.h
\brief Definition of the QDocumentCommand class
*/
#include "modifiedQObject.h"
#include <QUndoCommand>
#include "qdocument.h"
class QDocumentLine;
class QDocumentLineHandle;
class QDocumentCursorHandle;
class QCE_EXPORT QDocumentCommand : public QUndoCommand
{
public:
enum Command
{
None,
Insert,
Erase,
Replace,
Custom
};
struct TextCommandData
{
QString begin, end;
int lineNumber, startOffset, endOffset;
QList<QDocumentLineHandle*> handles;
};
QDocumentCommand(Command c, QDocument *d, QDocumentCommand *p = 0);
virtual ~QDocumentCommand();
virtual int id() const;
virtual bool mergeWith(const QUndoCommand *command);
virtual void redo();
virtual void undo();
bool isSilent() const;
void setSilent(bool y);
bool keepAnchor() const;
void setKeepAnchor(bool y);
void setTargetCursor(QDocumentCursorHandle *h);
void setRedoOffset(int off);
void setUndoOffset(int off);
virtual QStringList debugRepresentation() const;
protected:
bool m_state, m_first;
QDocument *m_doc;
int m_redoOffset, m_undoOffset;
void markRedone(QDocumentLineHandle *h, bool firstTime);
void markUndone(QDocumentLineHandle *h);
void updateTarget(int l, int offset);
void insertText(int line, int pos, const QString& s);
void removeText(int line, int pos, int length);
void insertLines(int after, const QList<QDocumentLineHandle*>& l);
void removeLines(int after, int n);
void updateCursorsOnInsertion(int line, int column, int prefixLength, int numLines, int suffixLength);
void updateCursorsOnDeletion(int line, int column, int prefixLength, int numLines, int suffixLength);
private:
bool m_silent;
bool m_keepAnchor;
Command m_command;
QDocumentCursorHandle *m_cursor;
};
Q_DECLARE_TYPEINFO(QDocumentCommand::TextCommandData, Q_MOVABLE_TYPE);
class QCE_EXPORT QDocumentInsertCommand : public QDocumentCommand
{
public:
QDocumentInsertCommand( int l, int offset,
const QString& text,
QDocument *doc,
QDocumentCommand *p = 0);
virtual ~QDocumentInsertCommand();
virtual bool mergeWith(const QUndoCommand *command);
virtual void redo();
virtual void undo();
virtual QStringList debugRepresentation() const;
private:
TextCommandData m_data;
};
class QCE_EXPORT QDocumentEraseCommand : public QDocumentCommand
{
public:
QDocumentEraseCommand( int bl, int bo,
int el, int eo,
QDocument *doc,
QDocumentCommand *p = 0);
virtual ~QDocumentEraseCommand();
virtual bool mergeWith(const QUndoCommand *command);
virtual void redo();
virtual void undo();
virtual QStringList debugRepresentation() const;
private:
TextCommandData m_data;
bool m_mergedLines;
};
class QCE_EXPORT QDocumentCommandBlock : public QDocumentCommand
{
public:
QDocumentCommandBlock(QDocument *d);
virtual ~QDocumentCommandBlock();
virtual void redo();
virtual void undo();
void setWeakLock(bool l);
bool isWeakLocked() const;
virtual void addCommand(QDocumentCommand *c);
virtual void removeCommand(QDocumentCommand *c);
virtual QStringList debugRepresentation() const;
private:
bool m_weakLocked;
QList<QDocumentCommand*> m_commands;
};
class QCE_EXPORT QDocumentChangeMetaDataCommand: public QDocumentCommand{
public:
QDocumentChangeMetaDataCommand(QDocument *d, QTextCodec* newCodec);
QDocumentChangeMetaDataCommand(QDocument *d, QDocument::LineEnding newLineEnding);
virtual void redo();
virtual void undo();
virtual QStringList debugRepresentation() const;
private:
void init(QTextCodec* newCodec, QDocument::LineEnding newLineEnding);
QTextCodec *newCodec, *oldCodec;
QDocument::LineEnding newLineEnding, oldLineEnding;
};
#endif
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