/*

* Copyright (c) 2002 - 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:  

*  Settings observer   

*

*/

#ifndef __MCESETTINGSSESSIONOBSERVER_H__

#define __MCESETTINGSSESSIONOBSERVER_H__

//  INCLUDES

#include <MuiuMsvSingleOpWatcher.h>

#include "MceSettingsAccountManager.h"

// CLASS DECLARATION

// CLASS DECLARATION

/**

*  Settings observer

*  

*/

class CMceSettingsSessionObserver : 

    public CBase, 

    public MMsvSessionObserver,

    public MMsvSingleOpWatcher,

    public MMceSettingsAccountManager

    {

    public:

        /**

        * Two-phased constructor.

        */

        IMPORT_C static CMceSettingsSessionObserver* NewL( CMsvSession* aSession );

        /**

         * Destructor

         */

        IMPORT_C virtual ~CMceSettingsSessionObserver();

    public:

        /**

        * from MMsvSessionObserver

        */

	    virtual void HandleSessionEventL( TMsvSessionEvent aEvent, 

	                                                        TAny* aArg1, 

	                                                        TAny* aArg2, 

	                                                        TAny* aArg3 );

        /**

        * from MMsvSingleOpWatcher

        */

        virtual void OpCompleted( CMsvSingleOpWatcher& aOpWatcher, TInt aCompletionCode );

        /**

        * From MMceSettingsAccountManager

        */

        IMPORT_C TBool CreateNewAccountL(

            TUid aMessageType,

            TMsvId aOldServiceId );

        /**

        * From MMceSettingsAccountManager

        */

        IMPORT_C void EditAccountL( TMsvId aId );

        /**

        * From MMceSettingsAccountManager

        */

        IMPORT_C CUidNameArray* MtmAccountsL( TUid aType );

        /**

        * From MMceSettingsAccountManager

        */

        IMPORT_C TBool CanCreateNewAccountL( TUid aMtm );

        /**

        * From MMceSettingsAccountManager

        */

        IMPORT_C void DeleteAccountL( TMsvId aId );

        /**

        * From MMceSettingsAccountManager

        */

        IMPORT_C CMsvSession& Session();

        /**

        * From MMceSettingsAccountManager

        */

        IMPORT_C TBool IsPresent( TUid aMtm ) const;

        /**

        * From MMceAccountManager

        */

        IMPORT_C THumanReadableName MtmName( TUid aType ) const;

        /**

        * From MMceAccountManager

        */

        IMPORT_C void SetChangeMessageStore( TBool aChangeEnded );

    public:

        /**

        * Returns mtm store pointer

        */

        IMPORT_C CMtmStore* MtmStore() const;

        /**

        * Returns ui data registry pointer

        */

        IMPORT_C CMtmUiDataRegistry* UiRegistry() const;

    private:

        /**

         * Default constructor

         */

        CMceSettingsSessionObserver( CMsvSession* aSession );

        /**

         * Symbian OS constructor

         */

        void ConstructL();

        /**

        * Check if free disk space goes under critical level, and leaves if it does

        */

        void LeaveIfDiskSpaceUnderCriticalLevelL( TInt aBytesToWrite = 0 ) const;

        /**

        * Display possible error when operation is compeleted

        */

        void DoOperationCompletedL(

            CMsvOperation* aOperation, 

            TInt aCompletionCode );

        /**

        * Cancels RequestFreeDiskSpace if leave happens

        * on DeleteAccountL

        * @param aAny: pointer to object.

        */

        static void CancelFreeDiskSpaceRequest( TAny* aAny );

    private: // Data

        CMsvSession*    iSession;

        CMtmUiDataRegistry* iUiRegistry;

        CMtmStore*      iMtmStore;

        CMsvEntry*      iRootEntry;

        CMsvSingleOpWatcher* iRunningOperation;

        TBool           iDeleteSession;

    };

#endif // MCESETTINGSSESSIONOBSERVER_H