/*

* Copyright (c) 2002 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 AKNPHEDDATAOBSERVER_H

#define AKNPHEDDATAOBSERVER_H

#include <e32base.h>

class CAknPhedModel;

//

// MPhedDataObserver

//

class MPhedDataObserver

    {

public:

    class TAknPhedDataEvent

        {

    public:

        enum TType

            {

            EText=0x1,

            ECursor=0x2,

            ESelection=0x4

            };

    public:

        inline TAknPhedDataEvent();

        inline TAknPhedDataEvent( TInt aType );

        inline TAknPhedDataEvent( TInt aType, TInt aStart, TInt aEnd );

        inline void Reset();

        void Add( const TAknPhedDataEvent& aEvent );

        inline TBool TextChanged() const;

        inline TBool CursorChanged() const;

        inline TBool SelectionChanged() const;

        inline void TextChangeRange( TInt& aStart, TInt& aEnd ) const;

        inline TInt Type() const;

    private:

        TInt iType;

        TInt iStart;

        TInt iEnd;

        };

    virtual void HandlePhedDataEvent( const TAknPhedDataEvent& aEvent, 

                                      CAknPhedModel* aPhedData ) = 0;

    };

#endif // AKNPHEDDATAOBSERVER_H