/*

* 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 TSMODEL_H

#define TSMODEL_H

#include <e32base.h>

#include "tsmodelitem.h"

class MTsModelObserver;

class MTsModel 

{

public:

    virtual TInt Count() const = 0;

    TTsModelItem ItemL( TInt aOffset ) const;

    virtual void SetObserver( MTsModelObserver *observer ) = 0;

protected: //data access. should be used by TModelItem

    virtual const TDesC& DisplayNameL( TInt aOffset ) const = 0;

    virtual TInt IconHandleL( TInt aOffset ) const = 0;

    virtual TTime TimestampL( TInt aOffset ) const = 0;

    virtual TTime TimestampUpdateL(TInt offset) const = 0;

    virtual TTsModelItemKey KeyL( TInt aOffset ) const = 0;

    virtual TBool IsActiveL( TInt aOffset ) const = 0;

    virtual TBool IsClosableL( TInt aOffset ) const = 0;

protected: //operations execution

    virtual TBool CloseL( TTsModelItemKey aKey ) const = 0;

    virtual TBool LaunchL( TTsModelItemKey aKey ) const = 0;

    friend class TTsModelItem;

};

#endif //TSMODEL_H