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

**

** 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 HBPOPUPMANAGER_P_P_H

#define HBPOPUPMANAGER_P_P_H

#include "hbdialog.h"

#include "hbpopup.h"

#include "hbdevicefadecontrol_p.h"

#include <QGraphicsItem>

#include <QHash>

#include <QList>

#include <QPointer>

class HbDialog;

class HbGraphicsScene;

class HbPopupLayoutManager;

QT_FORWARD_DECLARE_CLASS(QEvent)

QT_FORWARD_DECLARE_CLASS(QGraphicsSceneMouseEvent)

class HbPopupManagerPrivate : public QObject

{

    Q_OBJECT

public:

    explicit HbPopupManagerPrivate( HbGraphicsScene *scene, QObject * parent = 0 );

    virtual ~HbPopupManagerPrivate();

public:

    void eventHook( QEvent *event);

    void showPopup( HbPopup *popup );

    void hidePopup( HbPopup *popup );

    void addPopup( HbPopup *popup );

    void removePopup( HbPopup *popup );

private:

    void mouseReleaseEvent(QGraphicsSceneMouseEvent* mouseEvent);

    bool eventBlockItem(QGraphicsItem *item);

    static qreal popupZValueForPriority(int priority, int popupCountWaterMark);

    qreal nextPopupZValueForPriority(int priority);

    void updateHash(int priority, qreal zValueOfRemovedPopup);

    void updateFading(bool unfadeFirst = false);

    void setGeometryForPopup(HbPopup *popup);

private slots:

    void deviceFadeChange( bool fadeOff );

private:

    class GraphicsItem: public QGraphicsItem

    {

        friend class HbPopupManagerPrivate;

    };

    struct PopupCountRegister

    {

        PopupCountRegister():waterMark(0), count(0){}

        int waterMark;

        int count;

    };

    QList<HbPopup *> popupList;

    HbPopup *topLevelFocusablePopup;

    QGraphicsItem *initialFocusedItem;

    QHash<int, PopupCountRegister> popupCountRegisters;

    HbDeviceFadeControl deviceFadeControl;

    HbGraphicsScene *scene;

    QMap<HbPopup *,HbPopupLayoutManager*> parentItems; 

};

class HbPopupLayoutSpacer: public HbWidgetBase

{

public:

    HbPopupLayoutSpacer( QGraphicsItem *parent = 0 );

    virtual ~HbPopupLayoutSpacer() {}

protected:

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

};

class HbPopupLayoutProxy : public HbWidgetBase 

{

public:

    HbPopupLayoutProxy( HbPopup *popup, QGraphicsItem *parent );

    virtual ~HbPopupLayoutProxy() {}

    QPointer<HbPopup> mPopup;

    QPointF mPreferredPos;

    bool mPreferredPosSet;

    HbPopup::Placement mPlacement;

protected:

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

    void setGeometry(const QRectF &rect);

    bool event( QEvent *e );

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

};

class HbPopupLayoutManager : public HbWidget

{

    Q_OBJECT

public:

    HbPopupLayoutManager( HbPopup *popup, QGraphicsScene *scene );

    virtual ~HbPopupLayoutManager() {}

public slots:

      void  orientationChanged(const QRectF& rect);

protected:

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

    void changeEvent(QEvent *event);

};

#endif // HBPOPUPMANAGER_P_P_H