/*

* Copyright (c) 2002-2004 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:  

*

*/

#ifndef CALENENGINE_H

#define CALENENGINE_H

// INCLUDES

#include <e32base.h>

#include <calcommon.h> //TCalCollectionId

// FORWARD DECLARATIONS

class CCalSession;

class CCalInstance;

class CCalAlarm;

class CMultistepCommandBase;

class COpenCommand;

class CCalInstanceView;

class CCalCalendarInfo;

class MCalenEngineGeneralCallback;

class MCalenEngineOpenCallback;

class MCalenEngineEntryFetchCallback;

class TCalInfo

    {

public:

    TFileName iFileName;

    TUint32 iColor;

    TCalCollectionId iColltectionId;

    };

// CLASS DEFINITION

NONSHARABLE_CLASS( CCalenEngine ) : public CBase

{

private:

    friend class CActive;

    friend class COpenCommand;

    friend class CGetEntriesCommand;

    friend class CGetTodosCommand;

    friend class CGetNextEventCommand;

    friend class CGetEntriesForDaysCommand;

private:

    // hidden default constructor

    CCalenEngine();

public: // Factory method and destructor

    static CCalenEngine* NewL();

    virtual ~CCalenEngine();

public: // New methods

    void OpenDatabaseL(MCalenEngineOpenCallback& aCallback);

    void GetEntriesForDayL( MCalenEngineEntryFetchCallback& aCallback, 

                            const TTime& aDay, 

                            RPointerArray<CCalInstance>& aInstanceArray );

    void GetEventForNextSevenDaysL( MCalenEngineEntryFetchCallback& aCallback, 

                                    const TTime& aStartDay, 

                                    const TInt aDaysToCheck, 

                                    RPointerArray<CCalInstance>& aInstanceArray );

    void GetTodosL( MCalenEngineEntryFetchCallback& aCallback, 

                    RPointerArray<CCalInstance>& aInstanceArray );

    void GetCalendarDataL( MCalenEngineEntryFetchCallback& aCallback,

                           RPointerArray<CCalInstance>& aInstanceArray,

                           const TTime& aStartDay,

                           const TInt aDaysToSearch );

    void Close();

    RPointerArray<CCalSession>& GetActiveSessionsL();

    void UpdateCalSessionsL();

    void GetAllCalendarInfoL( );

    void Reset();

private:

    void StartCommand( CMultistepCommandBase* aCommand, 

                       MCalenEngineGeneralCallback& aCallback );

    void FinishCommand();

    void OpenCompleted();

    void GetEntriesCompleted();

    void GetTodosCompleted();

    void GetFutureEventCompleted();

    void GetCalendarDataCompleted();

    void HandleError(TInt aError);

    void ReleaseCalendarDatabase();

private: // data members

    CCalInstanceView* iInstanceView;

    MCalenEngineGeneralCallback* iCallback;

    CMultistepCommandBase* iCommand;

    RArray<TCalInfo> iCalInfoArray;

    RPointerArray<CCalSession> iSessionReferanceArray;

    RPointerArray<CCalSession> iSessionOwningArray;

};

#endif // CALENENGINE_H

// End of File