/*

* 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: 

*    Abstract interface for creating logs extensions.

*

*/

#ifndef MLogsExtensionFactory_H

#define MLogsExtensionFactory_H

//  INCLUDES

#include <e32std.h>  // for TUid

// CONSTANTS

_LIT( KLogsUiExtensionDllDrive, "Z:" );

_LIT( KLogsUiExtensionDllFile, "logsserviceextension.dll" );       

//  FORWARD DECLARATIONS

class MLogsViewExtension;

class MLogsUiControlExtension;

class MLogsExtObserver;

class CPbkContactEngine;

// CLASS DECLARATION

/**

 * @internal This interface is internal to Logs.

 *

 * Abstract interface for creating logs extensions. Instance of 

 * this factory should be kept as long as extensions are used, if resources

 * are needed.

 */

class MLogsExtensionFactory

    {

    public:  // Destructor

    /**

     * Cleans up the object owned through this interface.

     * 

     * @since S60 v3.2     

     */

    virtual void Release() = 0; 

    public: // Interface

        /**

         * Creates a logs view extension.

         *

         * @param aId   id of the logs view to create the extension

         *              for.

         * @param aEngine pbk engine to be provided to extensions.

         * @param aObserver observer

         * @return Logs view extension object.

         */

        virtual MLogsViewExtension* CreateLogsViewExtensionL

                ( CPbkContactEngine& aEngine, 

                MLogsExtObserver* aObserver ) = 0;

        /**

         * Creates a Logs UI control extension.

         * @return Logs control extension object.

         */

        virtual MLogsUiControlExtension* CreateLogsUiControlExtensionL() = 0;

    };

#endif

// End of File