/*

 * Copyright (c) 2010 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 NMHSWIDGET_H

#define NMHSWIDGET_H

#include <hbwidget.h>

#include "nmcommon.h"

class NmHsWidgetEmailEngine;

class NmHsWidgetTitleRow;

class NmHsWidgetEmailRow;

class QGraphicsLinearLayout;

class QTranslator;

class HbFrameDrawer;

class NmHsWidgetDateTimeObserver;

class HbLabel;

class HbDocumentLoader;

class NmHsWidget : public HbWidget

{

    Q_OBJECT

    Q_PROPERTY(QString accountId READ accountId WRITE setAccountId)

    Q_PROPERTY(QString accountIconName READ accountIconName WRITE setAccountIconName)

    Q_PROPERTY(QString widgetState READ widgetStateProperty WRITE setWidgetStateProperty)

public:

    NmHsWidget(QGraphicsItem *parent = 0, Qt::WindowFlags flags = 0);

    ~NmHsWidget();

    QPainterPath shape() const;

public slots:

    //from home screen fw

    void onInitialize();

    void onShow();

    void onHide();

    //engine

    void updateMailData();

    void onEngineException(const int& exc);

    //properties

    void setAccountId(const QString &text);

    QString accountId() const;

    void setAccountIconName(const QString &text);

    QString accountIconName() const;   

    void setWidgetStateProperty(QString value);

    QString widgetStateProperty();

    //user actions

    void handleExpandCollapseEvent();

signals: 

    void finished();

    void setPreferences(const QStringList &names);

    void error();

private:

    void setupLocalization();

    void setupUi();

    bool loadDocML(HbDocumentLoader &loader);

    void updateMailRowsVisibility(const int visibleCount);

    void addNoMailsLabelToLayout();

    void removeNoMailsLabelFromLayout();

    void addEmailRowsToLayout();

    void removeEmailRowsFromLayout();

    void updateLayout(const int visibleCount);

    void toggleExpansionState();  

protected:

    void createMailRowsList();

private:

    //UI components

    HbWidget* mMainContainer;               //container including all UI components

    HbWidget* mEmptySpaceContainer;         //container for empty space above mWidgetContainer

    HbWidget* mWidgetContainer;             //container including title row and mContentContainer

    NmHsWidgetTitleRow* mTitleRow;          //mailbox icon, name, unread count and expand button 

    HbWidget* mContentContainer;            //container for mail rows or mNoMailsLabel

    QList<NmHsWidgetEmailRow*> mMailRows;   //list including mail row instances

    HbLabel* mNoMailsLabel;                 //label shown in mContentContainer when no mails in inbox

    QGraphicsLinearLayout* mContentLayout;  //layout used in mContentContainer    

    HbFrameDrawer* mBackgroundFrameDrawer;  //drawer for widget background shown in mWidgetContainer

    QTranslator* mTranslator;

    NmHsWidgetEmailEngine* mEngine;

    NmId mAccountId;                        //mail account id widget is monitoring

    QString mAccountIconName;               //name of mailbox icon shown in titlerow

    NmHsWidgetDateTimeObserver* mDateObserver;  //observer for time/locale changes    

    bool mIsExpanded;                       //true when widget expanded, false when collapsed  

public:    

    friend class TestNmHsWidget;     

};

#endif  // NMHSWIDGET_H