/****************************************************************************
**
** Copyright (C) 2007-2007 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://trolltech.com/products/qt/licenses/licensing/opensource/
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
** or contact the sales department at sales@trolltech.com.
**
** In addition, as a special exception, Trolltech gives you certain
** additional rights. These rights are described in the Trolltech GPL
** Exception version 1.0, which can be found at
** http://www.trolltech.com/products/qt/gplexception/ and in the file
** GPL_EXCEPTION.txt in this package.
**
** In addition, as a special exception, Trolltech, as the sole copyright
** holder for Qt Designer, grants users of the Qt/Eclipse Integration
** plug-in the right for the Qt/Eclipse Integration to link to
** functionality provided by Qt Designer and its related libraries.
**
** Trolltech reserves all rights not expressly granted herein.
**
** 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 COMMANDS_H
#define COMMANDS_H

#include <QUndoCommand>

#include "diagramitem.h"

//! [0]
class MoveCommand : public QUndoCommand
{
public:
    enum { Id = 1234 };

    MoveCommand(DiagramItem *diagramItem, const QPointF &oldPos,
                QUndoCommand *parent = 0);

    void undo();
    void redo();
    bool mergeWith(const QUndoCommand *command);
    int id() const { return Id; }

private:
    DiagramItem *myDiagramItem;
    QPointF myOldPos;
    QPointF newPos;
};
//! [0]

//! [1]
class DeleteCommand : public QUndoCommand
{
public:
    DeleteCommand(QGraphicsScene *graphicsScene, QUndoCommand *parent = 0);

    void undo();
    void redo();

private:
    DiagramItem *myDiagramItem;
    QGraphicsScene *myGraphicsScene;
};
//! [1]

//! [2]
class AddCommand : public QUndoCommand
{
public:
    AddCommand(DiagramItem::DiagramType addType, QGraphicsScene *graphicsScene,
               QUndoCommand *parent = 0);

    void undo();
    void redo();

private:
    DiagramItem *myDiagramItem;
    QGraphicsScene *myGraphicsScene;
    QPointF initialPosition;
};
//! [2]

QString createCommandString(DiagramItem *item, const QPointF &point);

#endif
