/*

* Copyright (c) 2006-2007 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:  Thumbnail Auto Generate Daemon

 *

*/

#ifndef THUMBAGIMAGEOBSERVER_H

#define THUMBAGIMAGEOBSERVER_H

#include <e32base.h>

#include <w32std.h>

#include <mdesession.h>

#include "thumbagprocessor.h"

#include "thumbnaillog.h"

#include "tmshutdownobserver.h"

/**

 *  ThumbAG daemon.

 *

 *  @since S60 v5.0

 */

NONSHARABLE_CLASS( CThumbAGImageObserver ): public CBase, 

                                     public MMdESessionObserver,

                                     public MMdEObjectObserver,

                                     public MTMShutdownObserver

    {

public:

    /**

     * Two-phased constructor

     *

     * @since S60 v5.0

     * @return New CThumbAGImageObserver server.

     */

    static CThumbAGImageObserver* NewLC(CThumbAGProcessor* aProcessor);

    /**

     * Two-phased constructor

     *

     * @since S60 v5.0

     * @return New CThumbAGImageObserver server.

     */

    static CThumbAGImageObserver* NewL(CThumbAGProcessor* aProcessor);

    /**

     * Destructor

     *

     * @since S60 v5.0

     */

    virtual ~CThumbAGImageObserver();

public:

    // from MMdESessionObserver

    void HandleSessionOpened( CMdESession& aSession, TInt aError );

    void HandleSessionError( CMdESession& aSession, TInt aError );

    // from MMdEObjectObserver

    void HandleObjectNotification(CMdESession& aSession, 

                                  TObserverNotificationType aType,

                                  const RArray<TItemId>& aObjectIdArray);

    // from MTMShutdownObserver

    void ShutdownNotification();

protected:

    /**

     * AddObserversL

     *

     * @since S60 v5.0

     */

    void AddObserversL();    

private:

    /**

     * C++ default constructor

     *

     * @since S60 v5.0

     * @return New CThumbAGImageObserver instance.

     */

    CThumbAGImageObserver(CThumbAGProcessor* aProcessor);

    /**

     * Symbian 2nd phase constructor can leave.

     *

     * @since S60 v5.0

     */

    void ConstructL();

	 /**

     * Initilization helper

     *

     * @since S60 v5.2

     */

    void InitializeL();

    /**

     * Callback for reconnect timer

     *

     * @since S60 v5.0

     */

    static TInt ReconnectCallBack(TAny* aAny);

private:

    // own

    CTMShutdownObserver* iShutdownObserver;

    CTMShutdownObserver* iMDSShutdownObserver;

    CMdESession* iMdESession;

    //not owned

    CThumbAGProcessor* iProcessor;

    TBool iShutdown;

    // reconnect timer

    CPeriodic* iReconnect;

    TBool iSessionError;

#ifdef _DEBUG

    TUint32 iAddCounter;

    TUint32 iModCounter;

#endif

};

#endif // THUMBAGDAEMON_H