/*

* Copyright (c) 2005 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:   This file declares all helper classes 

*                for ScreenSaverAnimPlugin

*

*/

#ifndef C_SCREENSAVERANIMPLUGINHELPER_H

#define C_SCREENSAVERANIMPLUGINHELPER_H

//  INCLUDES

#include <e32base.h>

#include <MMGFetchVerifier.h>

#include <cenrepnotifyhandler.h>

// FORWARD DECLARATIONS

class CDRMHelper;

class CCoeEnv;

class CScreenSaverAnimPlugin;

class CRepository;

// CLASS DECLARATION

/**

* Implementation for File Validity Check.

* @since 3.1

* @internal

*/

class CScreenSaverAnimPluginVerifier : public CBase, public MMGFetchVerifier

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        */

        static CScreenSaverAnimPluginVerifier* NewL( 

                             CScreenSaverAnimPlugin* aFileVerify );

        /**

        * Destructor.

        */

        ~CScreenSaverAnimPluginVerifier();

    public: // Functions from base classes

        /**

        * From MFLDFileObserver.

        */

        TBool VerifySelectionL( const MDesCArray* aSelectedFiles );

    private:

        /**

        * C++ default constructor.

        */

        CScreenSaverAnimPluginVerifier( CScreenSaverAnimPlugin* aFileVerify );

        /**

        * By default Symbian 2nd phase constructor is private.

        */

        void ConstructL();

        void ShowErrorNoteL( TInt  aResourceId  ) const;

    private:    // Data

        // Own: DRM helper

        CDRMHelper* iDRMHelper;

        // Environment pointer

        CCoeEnv* iCoeEnv;

        CScreenSaverAnimPlugin* iFileVerify;

    };

// CLASS DECLARATION

/**

* Helper Class to watch Central Repository Changes.

* @since 3.1

* @internal

*/    

class CScreensaverRepositoryWatcher : public CBase, public MCenRepNotifyHandlerCallback

    {

public:

    static CScreensaverRepositoryWatcher* NewL(

        const TUid aUid,

        const TUint32 aKey,

        CCenRepNotifyHandler::TCenRepKeyType aKeyType,

        TCallBack aCallBack,

        CRepository* aRepository );

    static CScreensaverRepositoryWatcher* NewL(

        const TUid aUid,

        TCallBack aCallBack,

        CRepository* aRepository );

    ~CScreensaverRepositoryWatcher();

    TUint32 ChangedKey();

public: // from MCenRepNotifyHandlerCallback

    void HandleNotifyInt    ( TUint32 aKey, TInt aNewValue );

    void HandleNotifyString ( TUint32 aKey, const TDesC16& aNewValue );

    void HandleNotifyGeneric( TUint32 aKey );

    void HandleNotifyError  ( TUint32 aKey, TInt aError, CCenRepNotifyHandler* aHandler );

private:

    CScreensaverRepositoryWatcher(

        const TUid aUid,

        const TUint32 aKey,

        TCallBack aCallBack,

        CRepository* aRepository );

    void ConstructL( CCenRepNotifyHandler::TCenRepKeyType aKeyType );

    void ConstructL();

private:

    TUid                    iUid;

    TUint32                 iKey;

    TUint32                 iChangedKey;

    TCallBack               iCallBack;

    CRepository*            iRepository;

    CCenRepNotifyHandler*   iNotifyHandler;

    };

#endif // C_SCREENSAVERANIMPLUGINHELPER_H

// End of File