/*

* Copyright (c) 2004 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:    LandmarksUi Content File -    Singleton class for listening events

*

*/

#ifndef CLMKEVENTLISTENERSINGLETON_H

#define CLMKEVENTLISTENERSINGLETON_H

//  INCLUDES

#include <coemain.h>        // CCoeStatic

// FORWARD DECLARATIONS

class CLmkDbEventListener;

class CPosLandmarkDatabase;

class MLmkDbObserver;

// CLASS DECLARATION

/**

* CLmkEventListenerSingleton class.

* It is mandatory that the user takes care of removing added observers

* before they or the database becomes invalid, since this is a singleton

* class and used with static methods.

*/

class CLmkEventListenerSingleton : public CCoeStatic

    {

    public: // New methods

        /**

        * Add observer

        * @param aObserver

        * @param aDb

        */

        static void AddObserverL( MLmkDbObserver& aObserver,

                                  CPosLandmarkDatabase& aDb );

        /**

         * Remove observer

         * @param aObserver

         */

        static void RemoveObserver( MLmkDbObserver& aObserver );

    protected:  // Constructors and destructor

        /**

        * C++ constructor.

        * @return newly instantiated object

        */

        CLmkEventListenerSingleton();

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

        /**

        * Destructor.

        */

        ~CLmkEventListenerSingleton();

    protected:    // Data

        ///Own:

        CLmkDbEventListener* iEventListener;

    };

#endif      // CLMKEVENTLISTENERSINGLETON_H

// End of File