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** This file is part of the QtDeclarative module of the Qt Toolkit.

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** this package.

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

#ifndef QDECLARATIVEPATHVIEW_H

#define QDECLARATIVEPATHVIEW_H

#include "qdeclarativeitem.h"

#include "private/qdeclarativepath_p.h"

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)

class QDeclarativePathViewPrivate;

class QDeclarativePathViewAttached;

class Q_AUTOTEST_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(QDeclarativeComponent *highlight READ highlight WRITE setHighlight NOTIFY highlightChanged)

    Q_PROPERTY(QDeclarativeItem *highlightItem READ highlightItem NOTIFY highlightItemChanged)

    Q_PROPERTY(qreal preferredHighlightBegin READ preferredHighlightBegin WRITE setPreferredHighlightBegin NOTIFY preferredHighlightBeginChanged)

    Q_PROPERTY(qreal preferredHighlightEnd READ preferredHighlightEnd WRITE setPreferredHighlightEnd NOTIFY preferredHighlightEndChanged)

    Q_PROPERTY(HighlightRangeMode highlightRangeMode READ highlightRangeMode WRITE setHighlightRangeMode NOTIFY highlightRangeModeChanged)

    Q_PROPERTY(int highlightMoveDuration READ highlightMoveDuration WRITE setHighlightMoveDuration NOTIFY highlightMoveDurationChanged)

    Q_PROPERTY(qreal dragMargin READ dragMargin WRITE setDragMargin NOTIFY dragMarginChanged)

    Q_PROPERTY(qreal flickDeceleration READ flickDeceleration WRITE setFlickDeceleration NOTIFY flickDecelerationChanged)

    Q_PROPERTY(bool interactive READ isInteractive WRITE setInteractive NOTIFY interactiveChanged)

    Q_PROPERTY(int count READ count NOTIFY countChanged)

    Q_PROPERTY(QDeclarativeComponent *delegate READ delegate WRITE setDelegate NOTIFY delegateChanged)

    Q_PROPERTY(int pathItemCount READ pathItemCount WRITE setPathItemCount NOTIFY pathItemCountChanged)

    Q_ENUMS(HighlightRangeMode)

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);

    QDeclarativeComponent *highlight() const;

    void setHighlight(QDeclarativeComponent *highlight);

    QDeclarativeItem *highlightItem();

    enum HighlightRangeMode { NoHighlightRange, ApplyRange, StrictlyEnforceRange };

    HighlightRangeMode highlightRangeMode() const;

    void setHighlightRangeMode(HighlightRangeMode mode);

    qreal preferredHighlightBegin() const;

    void setPreferredHighlightBegin(qreal);

    qreal preferredHighlightEnd() const;

    void setPreferredHighlightEnd(qreal);

    int highlightMoveDuration() const;

    void setHighlightMoveDuration(int);

    qreal dragMargin() const;

    void setDragMargin(qreal margin);

    qreal flickDeceleration() const;

    void setFlickDeceleration(qreal dec);

    bool isInteractive() const;

    void setInteractive(bool);

    int count() const;

    QDeclarativeComponent *delegate() const;

    void setDelegate(QDeclarativeComponent *);

    int pathItemCount() const;

    void setPathItemCount(int);

    static QDeclarativePathViewAttached *qmlAttachedProperties(QObject *);

public Q_SLOTS:

    void incrementCurrentIndex();

    void decrementCurrentIndex();

Q_SIGNALS:

    void currentIndexChanged();

    void offsetChanged();

    void modelChanged();

    void countChanged();

    void pathChanged();

    void preferredHighlightBeginChanged();

    void preferredHighlightEndChanged();

    void highlightRangeModeChanged();

    void dragMarginChanged();

    void snapPositionChanged();

    void delegateChanged();

    void pathItemCountChanged();

    void flickDecelerationChanged();

    void interactiveChanged();

    void highlightChanged();

    void highlightItemChanged();

    void highlightMoveDurationChanged();

protected:

    void mousePressEvent(QGraphicsSceneMouseEvent *event);

    void mouseMoveEvent(QGraphicsSceneMouseEvent *event);

    void mouseReleaseEvent(QGraphicsSceneMouseEvent *);

    bool sendMouseEvent(QGraphicsSceneMouseEvent *event);

    bool sceneEventFilter(QGraphicsItem *, QEvent *);

    bool event(QEvent *event);

    void componentComplete();

private Q_SLOTS:

    void refill();

    void ticked();

    void itemsInserted(int index, int count);

    void itemsRemoved(int index, int count);

    void itemsMoved(int,int,int);

    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;

    friend class QDeclarativePathView;

    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