/*

* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:  Observer to add/delete contacts to/from a group in the contact store.

*

*/

#ifndef C_ORGANISEGROUPSOBSERVER_H

#define C_ORGANISEGROUPSOBSERVER_H

#include <s32file.h> // Used for RFileReadStream and RFileWriteStream

#include <mvpbkcontactobserver.h>    //base class for vCardExEng

#include <mvpbkcontactstoreobserver.h>    //base class for vCardExEng

#include <mvpbksinglecontactoperationobserver.h>

#include <cvpbkcontactlinkarray.h>

#include "contactservice.h"

class CVPbkContactManager;

class MVPbkStoreContact;

class MVPbkContactLink;

class MVPbkContactLinkArray;

class MContactCallback;

class MVPbkContactGroup;

class CContactService;

class COrganiseGroupsObserver : public CBase,

						   		public MVPbkContactStoreObserver,

						   		public MVPbkSingleContactOperationObserver,

						   		public MCancelAsync

{

	public:

		/*

		 * Called for creating an instace of organise groups observer.

		 */

    	static COrganiseGroupsObserver* NewL(CContactService* aContactService,

											 const TDesC8& aGroupId, 

											 RPointerArray<TDesC8>& aContactIdArray,

											 TBool aAssociateFlag,

											 TInt aTransId,

											 MContactCallback* aCallback ,

											 MVPbkContactStore* aContactStore);

		/*

		 * Destructor.

		 */

    	~COrganiseGroupsObserver();

		/*

    	 * Implementation of Cancel of MCancelAsync

    	 */

		void Cancel();

	private:

		/*

		 * Constructor

		 */

	    COrganiseGroupsObserver(); 

	    /*

	     * Symbian second-phase constuctor

	     */

	    /* 

	   	 * Symbian second-phase construction

	   	 */

	    void ConstructL(CContactService* aContactService,

						const TDesC8& aGroupId , 

						RPointerArray<TDesC8>& aContactIdArray,

						TBool aAssociateFlag,

						TInt aTransId,

						MContactCallback* aCallback ,

			            MVPbkContactStore* aContactStore);

	private:

		/*

		 * Called for associating/disassociating a list of contacts to/from the group.

		 */

		void DoOrganiseGroupsL(MVPbkStoreContact* aContact);

		/*

		 * Called to get the pointer to the contact group.

		 */

		void DoGetGroupL();

		/*

		 * Convert the contact ids into link array format.

	 	 */

		void ConvertContactIdsToLinkArrayL( RPointerArray<TDesC8>& aContactIdArray );

	private: //MVPbkContactStoreObserver

		/**

         * Called when a contact store is ready to use.

         */

         void StoreReady( MVPbkContactStore& aContactStore );

        /**

         * Called when a contact store becomes unavailable.

         * Client may inspect the reason of the unavailability and decide whether or not

         * it will keep the store opened (ie. listen to the store events).

         * @param aContactStore The store that became unavailable.

         * @param aReason The reason why the store is unavailable.

         *                This is one of the system wide error codes.

         */

         void StoreUnavailable( MVPbkContactStore& aContactStore, TInt aReason );

        /**

         * Called when changes occur in the contact store.

         * @see TVPbkContactStoreEvent

         * @param aContactStore The store the event occurred in.

         * @param aStoreEvent   Event that has occured.

         */

        virtual void HandleStoreEventL(MVPbkContactStore& aContactStore, 

                					   TVPbkContactStoreEvent aStoreEvent);

	private: // from MVPbkSingleContactOperationObserver

	    /**

         * Called when operation is completed.

         *

         * @param aOperation the completed operation.

         * @param aContact  the contact returned by the operation.

         *                  Client must take the ownership immediately.

         *

         *                  !!! NOTICE !!!

         *                  If you use Cleanupstack for MVPbkStoreContact

         *                  Use MVPbkStoreContact::PushL or

         *                  CleanupDeletePushL from e32base.h.

         *                  (Do Not Use CleanupStack::PushL(TAny*) because

         *                  then the virtual destructor of the M-class

         *                  won't be called when the object is deleted).

         */	    

	    virtual void VPbkSingleContactOperationComplete(MVPbkContactOperationBase& aOperation,

                							            MVPbkStoreContact* aContact);

			/**

         * Called if the operation fails.

         *

         * @param aOperation    the failed operation.

         * @param aError        error code of the failure.

         */

        virtual void VPbkSingleContactOperationFailed(MVPbkContactOperationBase& aOperation, 

                							          TInt aError);

	private: //Data members

		/*

		 * Pointer to a contact manager.

		 */

		const CVPbkContactManager* iContactManager;		

		/*

		 * Pointer to a contact group id.

		 */

		HBufC8* iGroupId;

		/*

		 * Pointer to a contact id array.

		 */

		CVPbkContactLinkArray* iContactLinkArray;

		/*

		 * Flag to indicate associate or disassociate.

		 */

		TBool iAssociateFlag;

		/*

		 * Pointer to a callback.

		 */

		MContactCallback* iCallback;

		/*

	     * Transaction Id.

	     */

	    TInt iTransId;

	    RPointerArray<MVPbkContactLinkArray> iLinkArrayToDelete;

	    MVPbkContactLinkArray* iLinkArray;

	    MVPbkContactStore* iContactStore;

	    CContactService* iContactService;

        //OperationBase pointer to be used to cancel async request

        MVPbkContactOperationBase* iOp;

};

#endif //C_ORGANISEGROUPSOBSERVER_H