/*

* Copyright (c) 2008 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:  Handles devices internal content change events

*

*/

#ifndef __CMSMCONTENTCHANGEOBSERVER_H

#define __CMSMCONTENTCHANGEOBSERVER_H

#include <e32base.h>

#include <mdesession.h>

// FORWARD DECLARATIONS

class MCmSmFileProcessingObserver;

// CLASS DECLARATION

/**

 *  Handles devices internal content change events

 *  Store list processing will be started when notification is received

 *

 *  @lib cmstoremanager.lib

 *

 *  @since S60 v5.1

 */

class CCmSmContentChangeObserver : public CBase,

                                   public MMdEObjectObserver 

    {     

public:

    /**

     * Two-phased constructor.

     * Creates new CCmSmContentChangeObserver class

     *

     * @since S60 5.1

     * @param aSession, mds session

     * @param aObserver, observer class

     * @return  pointer to CCmSmContentChangeObserver class

     */

    static CCmSmContentChangeObserver* NewL( CMdESession& aSession,

        MCmSmFileProcessingObserver& aObserver );

    /**

     * Two-phased constructor.

     * Creates new CCmSmContentChangeObserver class

     *

     * @since S60 5.1     

     * @param aSession, mds session

     * @param aObserver, observer class

     * @return  pointer to CCmSmContentChangeObserver class

     */

    static CCmSmContentChangeObserver* NewLC( CMdESession& aSession,

        MCmSmFileProcessingObserver& aObserver );

    /**

     * Destructor.

     */

    virtual ~CCmSmContentChangeObserver();

    /**

     * Starts content change observers

     *

     * @since S60 5.1

     * @param None

     */

    void StartObserversL();

    /**

     * ETrue if observers are started

     *

     * @since S60 5.1

     * @param None

     * @return ETrue if observers started

     */    

    TBool IsStarted();

protected: 

// From base class MMdEObjectObserver

	/**

	 * From MMdEObjectObserver

	 * See base class definition

     */

    void HandleObjectNotification(CMdESession& aSession, 

						TObserverNotificationType aType,

						const RArray<TItemId>& aObjectIdArray);

private:

    /**

     * Performs the first phase of two phase construction.

     *

     * since S60 5.1

     * @param aSession, mde session

     * @param aObserver, process observer

     */

    CCmSmContentChangeObserver( CMdESession& aSession,

        MCmSmFileProcessingObserver& aObserver );

    /**

     * Performs the second phase construction.

     */

    void ConstructL();

private: // data

    /**

     * MdS session

     */

    CMdESession& iMdSSession;                   // not owned

    /**

     * Observer to give notification about changed content

     */

    MCmSmFileProcessingObserver& iObserver;     // not owned

    /**

     * ETrue if observers started 

     */

    TBool iStarted;

    };

#endif //  __CMSMCONTENTCHANGEOBSERVER_H