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****************************************************************************/

#ifndef QDECLARATIVEPATHVIEW_H
#define QDECLARATIVEPATHVIEW_H

#include "qdeclarativeitem.h"
#include "qdeclarativepath_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)

class QDeclarativePathViewPrivate;
class QDeclarativePathViewAttached;
class Q_DECLARATIVE_EXPORT QDeclarativePathView : public QDeclarativeItem
{
    Q_OBJECT

    Q_PROPERTY(QVariant model READ model WRITE setModel NOTIFY modelChanged)
    Q_PROPERTY(QDeclarativePath *path READ path WRITE setPath NOTIFY pathChanged)
    Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged)
    Q_PROPERTY(qreal offset READ offset WRITE setOffset NOTIFY offsetChanged)
    Q_PROPERTY(qreal snapPosition READ snapPosition WRITE setSnapPosition NOTIFY snapPositionChanged)
    Q_PROPERTY(qreal dragMargin READ dragMargin WRITE setDragMargin NOTIFY dragMarginChanged)
    Q_PROPERTY(int count READ count)
    Q_PROPERTY(QDeclarativeComponent *delegate READ delegate WRITE setDelegate NOTIFY delegateChanged)
    Q_PROPERTY(int pathItemCount READ pathItemCount WRITE setPathItemCount NOTIFY pathItemCountChanged)

public:
    QDeclarativePathView(QDeclarativeItem *parent=0);
    virtual ~QDeclarativePathView();

    QVariant model() const;
    void setModel(const QVariant &);

    QDeclarativePath *path() const;
    void setPath(QDeclarativePath *);

    int currentIndex() const;
    void setCurrentIndex(int idx);

    qreal offset() const;
    void setOffset(qreal offset);

    qreal snapPosition() const;
    void setSnapPosition(qreal pos);

    qreal dragMargin() const;
    void setDragMargin(qreal margin);

    int count() const;

    QDeclarativeComponent *delegate() const;
    void setDelegate(QDeclarativeComponent *);

    int pathItemCount() const;
    void setPathItemCount(int);

    static QDeclarativePathViewAttached *qmlAttachedProperties(QObject *);

Q_SIGNALS:
    void currentIndexChanged();
    void offsetChanged();
    void modelChanged();
    void pathChanged();
    void dragMarginChanged();
    void snapPositionChanged();
    void delegateChanged();
    void pathItemCountChanged();

protected:
    void mousePressEvent(QGraphicsSceneMouseEvent *event);
    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);
    void mouseReleaseEvent(QGraphicsSceneMouseEvent *);
    bool sendMouseEvent(QGraphicsSceneMouseEvent *event);
    bool sceneEventFilter(QGraphicsItem *, QEvent *);
    void componentComplete();

private Q_SLOTS:
    void refill();
    void ticked();
    void itemsInserted(int index, int count);
    void itemsRemoved(int index, int count);
    void modelReset();
    void createdItem(int index, QDeclarativeItem *item);
    void destroyingItem(QDeclarativeItem *item);

private:
    friend class QDeclarativePathViewAttached;
    Q_DISABLE_COPY(QDeclarativePathView)
    Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativePathView)
};

class QDeclarativeOpenMetaObject;
class QDeclarativePathViewAttached : public QObject
{
    Q_OBJECT

    Q_PROPERTY(QDeclarativePathView *view READ view CONSTANT)
    Q_PROPERTY(bool isCurrentItem READ isCurrentItem NOTIFY currentItemChanged)
    Q_PROPERTY(bool onPath READ isOnPath NOTIFY pathChanged)

public:
    QDeclarativePathViewAttached(QObject *parent);
    ~QDeclarativePathViewAttached();

    QDeclarativePathView *view() { return m_view; }

    bool isCurrentItem() const { return m_isCurrent; }
    void setIsCurrentItem(bool c) {
        if (m_isCurrent != c) {
            m_isCurrent = c;
            emit currentItemChanged();
        }
    }

    QVariant value(const QByteArray &name) const;
    void setValue(const QByteArray &name, const QVariant &val);

    bool isOnPath() const { return m_onPath; }
    void setOnPath(bool on) {
        if (on != m_onPath) {
            m_onPath = on;
            emit pathChanged();
        }
    }

Q_SIGNALS:
    void currentItemChanged();
    void pathChanged();

private:
    friend class QDeclarativePathViewPrivate;
    QDeclarativePathView *m_view;
    QDeclarativeOpenMetaObject *m_metaobject;
    bool m_onPath : 1;
    bool m_isCurrent : 1;
};


QT_END_NAMESPACE

QML_DECLARE_TYPE(QDeclarativePathView)
QML_DECLARE_TYPEINFO(QDeclarativePathView, QML_HAS_ATTACHED_PROPERTIES)
QT_END_HEADER

#endif // QDECLARATIVEPATHVIEW_H