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** This file is part of the QtDeclarative module of the Qt Toolkit.
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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 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 QObject *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;
    static QHash<QObject*, QObject*> attachedProperties;
    Q_DISABLE_COPY(QDeclarativePathView)
    Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QDeclarativePathView)
};

QT_END_NAMESPACE

QML_DECLARE_TYPE(QDeclarativePathView)
QML_DECLARE_TYPEINFO(QDeclarativePathView, QML_HAS_ATTACHED_PROPERTIES)
QT_END_HEADER

#endif // QDECLARATIVEPATHVIEW_H