/*

* Copyright (c) 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:  Implements Attendee View's engine class.

*

*/

#ifndef __CATTENDEE_ENG_H__

#define __CATTENDEE_ENG_H__

//  INCLUDES

#include "MAttendeeEng.h"

#include <MPbkContactDbObserver.h>

#include <cntdb.h> //MIdleFindObserver

// FORWARD DECLARATION

class CAttendeeItemList;

class MAttendeeItemList;

class CPbkIdleFinder;

class CPbkContactEngine;

class CPbkFieldIdArray;

class CPbkContactItem;

class TPbkContactItemField;

class MPbkContactDbObserver;

class CPbkContactChangeNotifier;

// CLASS DECLARATION

/**

*  Implements AttendeeView's engine

*/

class CAttendeeEng : public CBase, 

                     public MAttendeeEng,

                     public MIdleFindObserver,

                     public MPbkContactDbObserver

    {

    public:

        /**

        * Two-phased constructor.

        * @param aAgnEntry

        * @return CAttendeeEng object.

        */	

        static CAttendeeEng* NewL( CCalEntry& aCalEntry );

        /**

        * Destructor.

        */	

        virtual ~CAttendeeEng();

    private:

        /**

        * By default Symbian 2nd phase constructor is private.

        */	

        void ConstructL();

        /**

        * C++ default constructor.

        * @param aCalEntry

        * @return aCalEntry

        */	

        CAttendeeEng( CCalEntry& aCalEntry );

    public: //From MAttendeeEng        	

    	void ParseAgnEntryL();    	

		void AddItemL( TDesC& aEmailAddress );	

		void AddItemL( CPbkContactItem& aPbkItem, 

                       const TPbkContactItemField* aAddress );	

		void DeleteItemL( const TInt aIndex );	

		void DeleteItemsL( const CArrayFix<TInt>& aIndexes );	

        void ChangeAttendanceL( const TInt aIndex, 

                               const CAttendeeItem::TAttendance aAttendance );	

        void ChangeAttendancesL( const CArrayFix<TInt>& aIndexes, 

                                const CAttendeeItem::TAttendance aAttendance );	

		TInt NumberOfItems() const;	

		CAttendeeItem& At( const TInt aIndex ) const;	

        TBool IsEditedL() const;	

        void SortAttendeesL();	

        void SetObserver( MAttendeeEngObserver* aObserver );	

    	void RemoveObserver();                       	

        CPbkContactEngine& ContactEngine() const;	

        CPbkContactItem* PbkContactItemL( const TInt aIndex ) const;           

    public: //from MIdleFindObserver	

        void IdleFindCallback(); 

    public: //New functions

        /**

        * Returns attendee item list

        * @return Attendee list

        */	

        MAttendeeItemList& Attendees() const;

        /**

        * Returns deleted attendee item list

        * @return deleted attendee list

        */	

        MAttendeeItemList& DeletedAttendees() const;

    protected: //From MPbkContactDbObserver	

        void HandleDatabaseEventL( TContactDbObserverEvent aEvent );               

    private: //New functions

        /**

        * Match CCalEntry's email addresses to phonebook's contacts        

        */	

        void MatchEmailsL();

        /**

        * Find next email match from phonebook

        */	

        void FindNextEmailL();

        /**

        * Update CAttendeeItem 

        * @param aFoundContacts, ownership is transfered

        */        	

        void UpdateAttendeesL( CContactIdArray* aFoundContacts );

        /**

        * Notify observer that list have changed        

        */	

        void NotifyL() const;

        /**

        * Notify observer that error have occured

        * @param aErrorCode

        */	

        void NotifyError( const TInt aErrorCode ) const;

    private:    // data

        ///CArrayPtrFlat<CAttendeeItem> item's index which is used to

        ///find contact

        TInt iFindedIndex;

    	///Ref:

    	MAttendeeEngObserver* iObserver;

    	///Own: List of attendees

    	CAttendeeItemList* iAttendees;

        ///Own: List of deleted attendees

    	CAttendeeItemList* iDeletedAttendees;

        ///Ref:

        CCalEntry* iCalEntry;

        ///Own:

        CPbkContactEngine* iContactEngine;

        ///Own:	

        CPbkIdleFinder* iIdleFinder;             

        ///Own: Contain id of field which used to find contacts

        CPbkFieldIdArray* iFind;

        ///Own: Get and handle contact db events	

        CPbkContactChangeNotifier*  iNotifier;

    };

#endif // __CATTENDEE_ENG_H__

// End of File