/*

 * 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 TSWINDOWGROUPSOBSERVER_H

#define TSWINDOWGROUPSOBSERVER_H

#include "tsresourcemanager.h"

/**

 * Interface declare mathods to notify about window server events

 */

class MTsWindowGroupsObserver

{

public:

    /**

     */

};

/**

 * Interface declare methods to subscribe windo server events

 */

class MTsWindowGroupsMonitor

{

public:

    /**

     * Method make subscription for window server events

     * @param observer - events observer

     */

    virtual void SubscribeL(MTsWindowGroupsObserver & observer) =0;

    /**

     * Method cancel subscription for window server events

     * @param observer - events observer

     */

    virtual void Cancel(MTsWindowGroupsObserver &) =0;

};

/**

 * Window server observer implementation. Class automaticly subscribe / cancel subscription

 * at construction / destruction level.

 * 

 */

class CTsWindowGroupsObserver: public CBase,

                               public MTsWindowGroupsObserver

{

public:

    /**

     * Destructor

     * Function automaticly cancel subscrption to window server events

     */

    ~CTsWindowGroupsObserver();

protected:

    /**

     * First phase constructor

     */

    CTsWindowGroupsObserver(MTsWindowGroupsMonitor &);

    /**

     * Second phase constructor.

     * Function automaticly subscribe window server events

     */

    void BaseConstructL();

private:

    MTsWindowGroupsMonitor & mMonitor;

};

#endif //TSWINDOWGROUPSOBSERVER_H