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

**

** Copyright (C) 2008-2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (developer.feedback@nokia.com)

**

** This file is part of the HbWidgets module of the UI Extensions for Mobile.

**

** GNU Lesser General Public License Usage

** This file may be used under the terms of the GNU Lesser General Public

** License version 2.1 as published by the Free Software Foundation and

** appearing in the file LICENSE.LGPL included in the packaging of this file.

** Please review the following information to ensure the GNU Lesser General

** Public License version 2.1 requirements will be met:

** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at developer.feedback@nokia.com.

**

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

#ifndef HBABSTRACTVIEWITEM_H

#define HBABSTRACTVIEWITEM_H

#include <hbwidget.h>

#include <hbglobal.h>

#include <hbnamespace.h>

#include <hbeffect.h>

#include <QHash>

class HbAbstractViewItemPrivate;

class HbAbstractViewItemShared;

class HbAbstractItemView;

class HbStyleParameters;

class HbFrameBackground;

class HB_WIDGETS_EXPORT HbAbstractViewItem : public HbWidget

{

    Q_OBJECT

    Q_PROPERTY(Hb::ModelItemType modelItemType READ modelItemType)

    Q_PROPERTY(Qt::CheckState checkState READ checkState WRITE setCheckState)

public:

    enum SelectionAreaType

    {

        SingleSelection,

        MultiSelection,

        ContiguousSelection

    };

    explicit HbAbstractViewItem(QGraphicsItem *parent=0);

    virtual ~HbAbstractViewItem();

    virtual HbAbstractViewItem *createItem() = 0;

    virtual void updateChildItems();

    QModelIndex modelIndex() const;

    virtual bool canSetModelIndex(const QModelIndex &index) const;

    virtual void setModelIndex(const QModelIndex &index);

    HbAbstractViewItem *prototype() const;

    HbAbstractItemView *itemView() const;

    void setItemView(HbAbstractItemView *itemView);

    virtual QHash<QString, QVariant> transientState() const;

    virtual void setTransientState(const QHash<QString, QVariant> &state);

    virtual bool selectionAreaContains(const QPointF &position, SelectionAreaType selectionAreaType) const;

    void setCheckState(Qt::CheckState state);

    Qt::CheckState checkState() const;

    void setDefaultFrame(const HbFrameBackground &frame);

    HbFrameBackground defaultFrame() const;

    Hb::ModelItemType modelItemType() const;

public slots:

    void updatePrimitives();

signals:

    void pressed(const QPointF &position);

    void released(const QPointF &position);

    void activated(const QPointF &position);

    void longPressed(const QPointF &position);

protected:

    HbAbstractViewItem(const HbAbstractViewItem &source);

    HbAbstractViewItem &operator=(const HbAbstractViewItem &source);

    HbAbstractViewItem( HbAbstractViewItemPrivate &dd, QGraphicsItem *parent );

    virtual void polish(HbStyleParameters& params);

    virtual QVariant itemChange(GraphicsItemChange change, const QVariant &value);

    virtual bool event(QEvent *e);

    virtual QSizeF sizeHint(Qt::SizeHint which, const QSizeF &constraint = QSizeF()) const;

    virtual void pressStateChanged(bool value, bool animate);

    virtual void gestureEvent(QGestureEvent *event);

private:

    Q_DECLARE_PRIVATE_D( d_ptr, HbAbstractViewItem )

    Q_PRIVATE_SLOT(d_func(), void _q_animationFinished(const HbEffect::EffectStatus &status))

    friend class HbAbstractViewItemShared;

};

#endif /*HBABSTRACTVIEWITEM_H*/