/*

* Copyright (c) 2002 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:  

*     State machine for handling MMS log entries

*     (sent messages and delivery reports)

*

*/

#ifndef MMSLOG_H

#define MMSLOG_H

//  INCLUDES

#include <msvstd.h>

#include <mentact.h>

// MACROS

// DATA TYPES

enum TMmsLoggingState

    {

    EMmsLogIdle,

    EMmsLogFiltering,

    EMmsLogMatchingEntry,

    EMmsLogUpdatingEntry,

    EMmsLogCreatingEntry,

    EMmsLogAddingEventType,

    EMmsLogFinal

    };

// FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

class CLogClient;

class CLogEvent;

class CLogViewEvent;

class CLogFilter;

class CLogFilterList;

// CLASS DECLARATION

/**

*  State machine that handles log database for MMS.

*/

class CMmsLog :public CMsgActive

    {

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        * @param aLogClient instance of log client. Caller creates for reusability

        * @param aLogViewEvent common settings for the event. Only remote party will vary

        */

        static CMmsLog* NewL( CLogClient& aLogClient, CLogViewEvent& aLogViewEvent, RFs& aFs );

        /**

        * Destructor.

        */

        virtual ~CMmsLog();

    public: // New functions

        /**

        * Start the state machine

        * @param aLogEvent common settings for an event. <br>

        *     aLog Event will contain the filter keys to be used.<br>

        *     (event type and message id (delivery report) or

        *     message entry id (sent messages)

        * @param aRemoteParties list of remote parties (pure addresses)

        * @param aStatus status of the calling active object

        */

        void StartL( CLogEvent& aLogEvent, CDesCArray& aRemoteParties, TRequestStatus& aStatus );

        TLogLink GetLink();

    public: // Functions from base classes

    protected:  // New functions

    protected:  // Functions from base classes

    private:

        /**

        * C++ default constructor.

        */

        CMmsLog( CLogClient& aLogClient, CLogViewEvent& aLogViewEvent );

        /**

        * By default Symbian OS constructor is private.

        */

        void ConstructL( RFs& aFs );

        // By default, prohibit copy constructor

        CMmsLog( const CMmsLog& );

        // Prohibit assignment operator

        CMmsLog& operator= ( const CMmsLog& );

        /**

        * Active object completion

        */

        void RunL();

        /**

        * Active object completion

        */

        void DoRunL();

        /**

        * Sweep the floor after everything has crashed

        */

        void DoComplete( TInt& aStatus );

        /**

        * Select next state for state machine

        */

        void SelectNextState();

        /**

        * Switch states

        */

        void ChangeStateL();

        /**

        * Find matching entries

        */

        void FilterL();

        /**

        * Check if found entry matches

        */

        void MatchEntryL();

        /**

        * Matching entry in log - update it

        */

        void UpdateEntryL();

        /**

        * Create a new entry into log

        */

        void CreateEntryL();

        /**

        * Add MMS Event Type

        */

        void AddEventTypeL();

    public:     // Data

    protected:  // Data

    private:    // Data

        RFs             iFs; // file system

        // State machine state

        TInt            iState;

        TInt            iError;

        // The log classes are instantiated by the caller

        // because the classes may be reused to add several

        // entries to logs.

        CLogClient&     iLogClient;     // caller opens this

        CLogViewEvent&  iLogViewEvent;  // caller provides this

        CLogEvent*      iLogEvent;      // caller provides this

        CLogFilterList* iFilterList;    // this is ours

        CDesCArray*     iRemoteParties; // caller provides this

        CLogEvent*      iLogUpdatedEvent; // We need this to update entries

        CLogEventType*  iLogEventType;  // to add mms event type      

        // sent entries are filtered by entry id

        TMsvId          iEntryId;

        // delivery reports are filtered by message id

        TPtrC8          iMessageId;

        TInt            iCurrentRemoteParty;

        TBool           iEvents; // filter results

        TBool           iEventMatched; // matching event found from the log

        TBool           iEventTypeAdded; // try adding only once

        TLogLink iLastMatchedLink;  

        TBuf<KLogMaxRemotePartyLength> iAlias; // alias for phone number

    public:     // Friend classes

    protected:  // Friend classes

    private:    // Friend classes

    };

#endif      // MMSLOG_H   

// End of File