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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_CURSOR_P_H_
#define _QDOCUMENT_CURSOR_P_H_
#include "qce-config.h"
/*!
\file qdocumentcursor_p.h
\brief Definition of QDocumentCursorHandle
*/
#include "qdocumentcursor.h"
#include <QStack>
#if QT_VERSION < 0x040400
#include <QAtomic>
#else
#include <QAtomicInt>
#endif
class QPoint;
class QPolygon;
class QDocument;
class QDocumentLine;
class QDocumentPrivate;
class QDocumentCommand;
class QDocumentCommandBlock;
class QCE_EXPORT QDocumentCursorHandle
{
friend class QDocumentCursor;
friend class QDocumentPrivate;
friend class QDocumentCommand;
public:
enum Flags
{
Silent = 1,
ColumnMemory = 2,
MoveWithinWrapped = 4,
AutoErasable = 0x100,
AutoUpdated = 0x200,
AutoUpdateKeepBegin = 0x400,
AutoUpdateKeepEnd = 0x800
};
QDocument* document() const;
bool atEnd() const;
bool atStart() const;
bool atBlockEnd() const;
bool atBlockStart() const;
bool atLineEnd() const;
bool atLineStart() const;
bool hasSelection() const;
bool isForwardSelection() const;
bool isSilent() const;
void setSilent(bool y);
bool isAutoUpdated() const;
void setAutoUpdated(bool y);
bool isAutoErasable() const;
void setAutoErasable(bool y);
QDocumentLine line() const;
QDocumentLine anchorLine() const;
int lineNumber() const;
int columnNumber() const;
int anchorLineNumber() const;
int anchorColumnNumber() const;
int startLineNumber() const;
int startColumnNumber() const;
int endLineNumber() const;
int endColumnNumber() const;
int visualColumnNumber() const;
void setLineNumber(int l, int m = QDocumentCursor::MoveAnchor);
void setColumnNumber(int c, int m = QDocumentCursor::MoveAnchor);
void setAnchorLineNumber(int l);
void setAnchorColumnNumber(int c);
QPoint documentPosition() const;
QPoint anchorDocumentPosition() const;
QPolygon documentRegion() const;
void shift(int offset);
void setPosition(int pos, int m);
bool movePosition(int offset, int op, const QDocumentCursor::MoveMode& m);
void insertText(const QString& s, bool keepAnchor = false);
QChar nextChar() const;
QChar previousChar() const;
void eraseLine();
void deleteChar();
void deletePreviousChar();
QDocumentCursor selectionStart() const;
QDocumentCursor selectionEnd() const;
QDocumentCursor anchorCursor() const;
bool eq(const QDocumentCursorHandle *h);
bool lt(const QDocumentCursorHandle *h);
bool gt(const QDocumentCursorHandle *h);
QString selectedText() const;
void clearSelection();
void flipSelection();
void removeSelectedText(bool keepAnchor = false);
void replaceSelectedText(const QString& text);
void select(QDocumentCursor::SelectionType t);
void expandSelect(QDocumentCursor::SelectionType t);
void setSelectionBoundary(const QDocumentCursor& c);
void select(int line, int column, int lineTo = -1, int columnTo = -1);
bool isWithinSelection(const QDocumentCursor& c) const;
QDocumentCursor intersect(const QDocumentCursor& c) const;
void beginBoundary(int& begline, int& begcol) const;
void endBoundary(int& endline, int& endcol) const;
void substractBoundaries(int lbeg, int cbeg, int lend, int cend);
void boundaries(int& begline, int& begcol, int& endline, int& endcol) const;
void intersectBoundaries(int& lbeg, int& cbeg, int& lend, int& cend) const;
void intersectBoundaries(QDocumentCursorHandle *h, int& lbeg, int& cbeg, int& lend, int& cend) const;
bool equalBoundaries(const QDocumentCursorHandle* c);
bool equal(const QDocumentCursorHandle* c);
void getMatchingPair(QDocumentCursor& from, QDocumentCursor& to, bool maximal) const;
void beginEditBlock();
void endEditBlock();
void moveTo(int line, int column, const QDocumentCursor::MoveMode& m =0);
void moveTo(const QDocumentCursor &c, const QDocumentCursor::MoveMode& m );
void copy(const QDocumentCursorHandle *c);
void refreshColumnMemory();
bool hasColumnMemory() const;
void setColumnMemory(bool y);
bool isRTL() const;
virtual void execute(QDocumentCommand *c);
inline void ref() { m_ref.ref(); }
inline void deref() { if ( !m_ref.deref() ) delete this; }
inline bool hasFlag(int f) const { return m_flags & f; }
inline void setFlag(int f) { m_flags |= f; }
inline void clearFlag(int f) { m_flags &= ~f; }
protected:
QDocumentCursorHandle(QDocument *d, int line = 0);
QDocumentCursorHandle(QDocument *d, int line, int column, int lineTo = -1, int columnTo = -1);
virtual ~QDocumentCursorHandle();
QDocumentCursorHandle* clone(bool cloneAutoUpdatedFlag) const;
private:
int m_flags;
QDocument *m_doc;
#if QT_VERSION < 0x040400
QBasicAtomic m_ref;
#else
QAtomicInt m_ref;
#endif
int m_begOffset, m_endOffset, m_max, m_begLine, m_endLine; //beg: cursor position, end: anchor position
QStack<QDocumentCommandBlock*> m_blocks;
};
Q_DECLARE_TYPEINFO(QDocumentCursorHandle*, Q_PRIMITIVE_TYPE);
#endif // !_QDOCUMENT_CURSOR_P_H_
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