/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

#ifndef HGWIDGET_H

#define HGWIDGET_H

#include <QItemSelectionModel>

#include <hbnamespace.h>

#ifdef BUILD_HG_WIDGETS

#    define HG_WIDGETS_EXPORT Q_DECL_EXPORT

#    define HG_WIDGETS_PRIVATE_EXPORT Q_DECL_EXPORT

#else

#    define HG_WIDGETS_EXPORT Q_DECL_IMPORT

#    define HG_WIDGETS_PRIVATE_EXPORT Q_DECL_IMPORT

#endif // BUILD_HG_WIDGETS

class HgWidgetPrivate;

class HbScrollBar;

class HG_WIDGETS_EXPORT HgWidget : public HbWidget

{

    Q_OBJECT

    Q_PROPERTY(bool longPressEnabled  READ longPressEnabled  WRITE setLongPressEnabled )

    Q_PROPERTY(ScrollBarPolicy scrollBarPolicy READ scrollBarPolicy WRITE setScrollBarPolicy)

    Q_PROPERTY(SelectionMode selectionMode READ selectionMode WRITE setSelectionMode)

    Q_PROPERTY(IndexFeedbackPolicy IndexFeedbackPolicy READ indexFeedbackPolicy WRITE setIndexFeedbackPolicy)

    Q_PROPERTY(ItemSizePolicy ItemSizePolicy READ itemSizePolicy WRITE setItemSizePolicy)

    Q_PROPERTY(QSizeF itemSize READ itemSize WRITE setItemSize)

    Q_PROPERTY(QSizeF itemSpacing READ itemSpacing WRITE setItemSpacing)

    Q_ENUMS(ScrollBarPolicy)

    Q_ENUMS(HgWidgetType)

    Q_ENUMS(SelectionMode)

    Q_ENUMS(IndexFeedbackPolicy)

    Q_ENUMS(ItemSizePolicy)

public:

    enum HgDataRole

    {

        HgVisibilityRole = Qt::UserRole + 1

    };

    enum IndexFeedbackPolicy {

        IndexFeedbackNone = 0,

        IndexFeedbackSingleCharacter,

        IndexFeedbackThreeCharacter,

        IndexFeedbackString

    };

    enum ScrollBarPolicy {

        ScrollBarAsNeeded = Qt::ScrollBarAsNeeded,

        ScrollBarAlwaysOff = Qt::ScrollBarAlwaysOff,

        ScrollBarAlwaysOn = Qt::ScrollBarAlwaysOn,

        ScrollBarAutoHide

    };

    enum ItemSizePolicy {

        ItemSizeAutomatic,

        ItemSizeUserDefined

    };

    explicit HgWidget (QGraphicsItem *parent = 0);

    virtual ~HgWidget ();

    virtual void setModel(QAbstractItemModel *model);

    QAbstractItemModel *model() const;

    void setSelectionModel(QItemSelectionModel *selectionModel);

    QItemSelectionModel *selectionModel() const;

    enum SelectionMode {

        NoSelection = 0,

        SingleSelection,

        MultiSelection,

        ContiguousSelection

    };

    SelectionMode selectionMode() const;

    void setSelectionMode(SelectionMode mode, bool resetSelection = true);

    void selectAll();

    void clearSelection();

    QModelIndex currentIndex() const;

    void setCurrentIndex(const QModelIndex &index,

        QItemSelectionModel::SelectionFlags selectionFlag=QItemSelectionModel::NoUpdate);

    void scrollTo(const QModelIndex &index);

    bool longPressEnabled() const;

    void setLongPressEnabled(bool value);

    ScrollBarPolicy scrollBarPolicy() const;

    void setScrollBarPolicy(ScrollBarPolicy policy);

    HbScrollBar *scrollBar() const;

    void setScrollBar(HbScrollBar *scrollBar);

    bool getItemOutline(const QModelIndex& index, QPolygonF& points);

    Qt::Orientation scrollDirection() const;

    QList<QModelIndex> getVisibleItemIndices() const;

    void setIndexFeedbackPolicy( IndexFeedbackPolicy policy);

    IndexFeedbackPolicy indexFeedbackPolicy() const;

    void setDefaultImage(QImage defaultImage);

    void setItemSizePolicy(ItemSizePolicy policy);

    ItemSizePolicy itemSizePolicy() const;

    void setItemSize(const QSizeF& size);

    QSizeF itemSize() const;

    void setItemSpacing(const QSizeF& spacing);

    QSizeF itemSpacing() const;

signals:

    void activated(const QModelIndex &index);

    void longPressed(const QModelIndex &index, const QPointF &coords);

    void scrollingStarted();

    void scrollingEnded();

public slots:

    void aboutToChangeOrientation();

    void orientationChanged(Qt::Orientation orientation);

protected slots:

    void dataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);

protected:

    HgWidgetPrivate * const p_ptr;

    HgWidget(HgWidgetPrivate &dd, QGraphicsItem *parent);

    bool eventFilter(QObject *obj,QEvent *event);

    bool event(QEvent *event);

private:

    Q_DECLARE_PRIVATE_D(p_ptr, HgWidget)

    Q_DISABLE_COPY(HgWidget)

    Q_PRIVATE_SLOT(d_func(), void _q_scrollPositionChanged(qreal index, bool scrollBarAnimation))

    Q_PRIVATE_SLOT(d_func(), void _q_releaseItems(int releaseStart, int releaseEnd))

    Q_PRIVATE_SLOT(d_func(), void _q_requestItems(int requestStart, int requestEnd))

    Q_PRIVATE_SLOT(d_func(), void _q_hideScrollBars() )

    Q_PRIVATE_SLOT(d_func(), void _q_thumbPositionChanged(qreal value, Qt::Orientation orientation))

    Q_PRIVATE_SLOT(d_func(), void _q_insertRows(const QModelIndex &parent, int start, int end))

    Q_PRIVATE_SLOT(d_func(), void _q_removeRows(const QModelIndex &parent, int start, int end))

    Q_PRIVATE_SLOT(d_func(), void _q_moveRows(const QModelIndex &sourceParent, int sourceStart, int sourceEnd, const QModelIndex &destinationParent, int destinationRow))

    Q_PRIVATE_SLOT(d_func(), void _q_groovePressed(qreal, Qt::Orientation))

    Q_PRIVATE_SLOT(d_func(), void _q_modelReset())

    Q_PRIVATE_SLOT(d_func(), void _q_updateCurrentItem(const QModelIndex &current, const QModelIndex &previous))

};

#endif  //HGWIDGET_H