/****************************************************************************
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** This file is part of the QtDeclarative module of the Qt Toolkit.
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** General Public License version 2.1 as published by the Free Software
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****************************************************************************/

#ifndef QFXGRIDVIEW_H
#define QFXGRIDVIEW_H

#include <QtDeclarative/qfxflickable.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Declarative)
class QFxVisualModel;
class QFxGridViewAttached;
class QFxGridViewPrivate;
class Q_DECLARATIVE_EXPORT QFxGridView : public QFxFlickable
{
    Q_OBJECT
    Q_DECLARE_PRIVATE_D(QGraphicsItem::d_ptr.data(), QFxGridView)

    Q_PROPERTY(QVariant model READ model WRITE setModel)
    Q_CLASSINFO("DefaultProperty", "delegate")
    Q_PROPERTY(QmlComponent *delegate READ delegate WRITE setDelegate)
    Q_PROPERTY(int currentIndex READ currentIndex WRITE setCurrentIndex NOTIFY currentIndexChanged)
    Q_PROPERTY(QFxItem *current READ currentItem NOTIFY currentIndexChanged)
    Q_PROPERTY(int count READ count NOTIFY countChanged)
    Q_PROPERTY(QmlComponent *highlight READ highlight WRITE setHighlight)
    Q_PROPERTY(bool autoHighlight READ autoHighlight WRITE setAutoHighlight)
    Q_PROPERTY(Flow flow READ flow WRITE setFlow)
    Q_PROPERTY(bool wrap READ isWrapEnabled WRITE setWrapEnabled)
    Q_PROPERTY(int cacheBuffer READ cacheBuffer WRITE setCacheBuffer)
    Q_PROPERTY(int cellWidth READ cellWidth WRITE setCellWidth NOTIFY cellSizeChanged)
    Q_PROPERTY(int cellHeight READ cellHeight WRITE setCellHeight NOTIFY cellSizeChanged)

public:
    QFxGridView(QFxItem *parent=0);
    ~QFxGridView();

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

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

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

    QFxItem *currentItem();
    int count() const;

    QmlComponent *highlight() const;
    void setHighlight(QmlComponent *highlight);

    bool autoHighlight() const;
    void setAutoHighlight(bool);

    Q_ENUMS(Flow)
    enum Flow { LeftToRight, TopToBottom };
    Flow flow() const;
    void setFlow(Flow);

    bool isWrapEnabled() const;
    void setWrapEnabled(bool);

    int cacheBuffer() const;
    void setCacheBuffer(int);

    int cellWidth() const;
    void setCellWidth(int);

    int cellHeight() const;
    void setCellHeight(int);

    static QFxGridViewAttached *qmlAttachedProperties(QObject *);

Q_SIGNALS:
    void countChanged();
    void currentIndexChanged();
    void cellSizeChanged();

protected:
    virtual void viewportMoved();
    virtual qreal minYExtent() const;
    virtual qreal maxYExtent() const;
    virtual qreal minXExtent() const;
    virtual qreal maxXExtent() const;
    virtual void keyPressEvent(QKeyEvent *);
    virtual void componentComplete();

private Q_SLOTS:
    void trackedPositionChanged();
    void itemsInserted(int index, int count);
    void itemsRemoved(int index, int count);
    void destroyRemoved();
    void createdItem(int index, QFxItem *item);
    void destroyingItem(QFxItem *item);
    void sizeChange();

private:
    void refill();
};

QT_END_NAMESPACE

QML_DECLARE_TYPE(QFxGridView)

QT_END_HEADER

#endif