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#ifndef DIAGRAMITEM_H

#define DIAGRAMITEM_H

#include <QGraphicsPixmapItem>

#include <QList>

QT_BEGIN_NAMESPACE

class QPixmap;

class QGraphicsItem;

class QGraphicsScene;

class QTextEdit;

class QGraphicsSceneMouseEvent;

class QMenu;

class QGraphicsSceneContextMenuEvent;

class QPainter;

class QStyleOptionGraphicsItem;

class QWidget;

class QPolygonF;

QT_END_NAMESPACE

class Arrow;

//! [0]

class DiagramItem : public QGraphicsPolygonItem

{

public:

    enum { Type = UserType + 15 };

    enum DiagramType { Step, Conditional, StartEnd, Io };

    DiagramItem(DiagramType diagramType, QMenu *contextMenu,

        QGraphicsItem *parent = 0, QGraphicsScene *scene = 0);

    void removeArrow(Arrow *arrow);

    void removeArrows();

    DiagramType diagramType() const

        { return myDiagramType; }

    QPolygonF polygon() const

        { return myPolygon; }

    void addArrow(Arrow *arrow);

    QPixmap image() const;

    int type() const

        { return Type;}

protected:

    void contextMenuEvent(QGraphicsSceneContextMenuEvent *event);

    QVariant itemChange(GraphicsItemChange change, const QVariant &value);

private:

    DiagramType myDiagramType;

    QPolygonF myPolygon;

    QMenu *myContextMenu;

    QList<Arrow *> arrows;

};

//! [0]

#endif