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

**

** 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 HbCore 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 HBMENUCONTAINER_P_H

#define HBMENUCONTAINER_P_H

#include "hbnamespace_p.h"

#include "hbmenu.h"

#include "hbview.h"

#include "hbscrollarea.h"

#include "hbscrollarea_p.h"

#include "hbactionmanager_p.h"

#include <QGraphicsLinearLayout>

class HbMenuContainer;

class HbMenuContainerPrivate;

class HbMenuListView;

class HbMenuItem;

class HbMenuListViewPrivate;

class HbMenuListView : public HbScrollArea

{

    Q_OBJECT

public:

    explicit HbMenuListView(HbMenu *menu,QGraphicsItem *parent = 0);

    virtual ~HbMenuListView() {}

    virtual bool scrollByAmount(const QPointF &delta);

    void addActionItem(QAction *action);

    void removeActionItem(QAction *Action);

    void updateActionItem(QAction *action);

    void doDelayedLayout();

    HbMenuItem* currentItem() const;

    void setCurrentItem(HbAction *action);

    enum { Type = HbPrivate::ItemType_MenuListView };

    int type() const { return Type; }

protected:

    void mousePressEvent(QGraphicsSceneMouseEvent *event);

    void mouseReleaseEvent(QGraphicsSceneMouseEvent *event);

    void upGesture(int value);

    void downGesture(int value);

    void panGesture(const QPointF &point);

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

private:

    HbMenuItem* itemAt(const QPointF& position) const;

    void updateCurrentItem();

    bool isFocusable(QAction *action);

protected:

    friend class HbMenuPrivate;

private:

    Q_DECLARE_PRIVATE_D(d_ptr, HbMenuListView)

};

class HbMenuListViewPrivate : public HbScrollAreaPrivate

{

    Q_DECLARE_PUBLIC(HbMenuListView)

    public:

    HbMenuListViewPrivate();

    virtual ~HbMenuListViewPrivate() { }

    HbMenuContainer *mContainer;

    HbMenuItem *mHitItem;

    HbMenuItem *mCurrentItem;

    int mCurrentIndex;

    bool mWasScrolling;

};

class HbMenuContainer : public HbWidget

{

    Q_OBJECT

public:

    explicit HbMenuContainer(HbMenu *menu,QGraphicsItem *parent = 0);

    virtual ~HbMenuContainer() {}

    void updateActionItem(QAction *action);

    QList<HbMenuItem *> items() const;

    void delayedLayout();

    void addItem(QAction *action, HbMenuItem* item = 0);

    void removeActionItem(QAction *Action);

    void visibleItemsChanged();

    void updateVisibleActionList();

protected:

    void polish(HbStyleParameters &params);

private:

    int actionMenuPos(QAction *action);

    Q_DECLARE_PRIVATE_D(d_ptr, HbMenuContainer)

};

class HbMenuContainerPrivate : public HbWidgetPrivate

{

    Q_DECLARE_PUBLIC(HbMenuContainer)

public:

    explicit HbMenuContainerPrivate(HbMenu *menu);

    void init();

    virtual ~HbMenuContainerPrivate();

    QGraphicsLinearLayout *mLayout;

    HbMenu *menu;

    HbActionManager *actionManager;

    QList<HbMenuItem*> mItems;

    QMap<QAction*, HbMenuItem*>  mBufferItems;

    QList<HbMenuItem*>  mOldVisibleItems;

    QList<QAction*> mVisibleActions;

};

#endif // MENU_P_H