omads/omadsextensions/adapters/contacts/inc/NSmlContactsModsFetcher.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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/*
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* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). 
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:  DS contacts datastore.
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*
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*/
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#ifndef __NSMLCONTACTSMODSFETCHER_H__
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#define __NSMLCONTACTSMODSFETCHER_H__
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// INCLUDES
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#include <SmlDataProvider.h>
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#include <SmlDataFormat.h>
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#include <f32file.h>
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#include <cntdb.h>
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#include <cntitem.h>
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#include "nsmlchangefinder.h"
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#include <CVPbkContactManager.h>
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#include <MVPbkContactStore.h>
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#include <MVPbkContactViewObserver.h>
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#include <CVPbkSortOrder.h>
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#include <MVPbkContactViewBase.h>
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#include <MVPbkSingleContactOperationObserver.h>
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#include <MVPbkContactOperationBase.h>
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// CONSTANTS
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const TInt KNSmlSnapshotSize = 56;
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const TInt KNSmlSnapshotSmallSize = 8;
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_LIT( KNSmlContactSyncNoSync, "none" ); // Taken from phonebook
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// CLASS DECLARATION
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// ------------------------------------------------------------------------------------------------
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// CNSmlContactsModsFetcher
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//
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// @lib nsmlcontactsdataprovider.lib
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// ------------------------------------------------------------------------------------------------
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class CNSmlContactsModsFetcher : public CActive,
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								MVPbkContactViewObserver,
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								MVPbkSingleContactOperationObserver,
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								MVPbkContactOperationBase
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	{
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	public:
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		/**
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		* C++ constructor.
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		* @param		aSnapshotRegistered	Is snapshot registered.
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		* @param		aCntDb				Pointer to opened database.
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		* @param		aKey				Key array.
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		* @param		aChangeFinder		Pointer to Changefinder.
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		*/
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		CNSmlContactsModsFetcher( TBool& aSnapshotRegistered,CVPbkContactManager& aContactManager,MVPbkContactStore& aStore,TKeyArrayFix& aKey, CNSmlChangeFinder& aChangeFinder );
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		/**
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		* Second phase constructor.
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		*/
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		void ConstructL();
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		/**
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		* Reads all modifications from clients contacts databse.
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		* @param		aStatus				On completion of the operation, contains the result code.
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		*/
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		void FetchModificationsL( TRequestStatus& aStatus );
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		/**
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		* ~CNSmlContactsModsFetcher() desctructor.
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		*/
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		virtual ~CNSmlContactsModsFetcher();
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	private:
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		/**
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		* From MVPbkContactViewObserver  
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		* Called when a view is ready for use. 
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		*/
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		void ContactViewReady(
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		            MVPbkContactViewBase& aView ) ;
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		/**
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		* From MVPbkContactViewObserver  
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		* Called when a view is unavailable for a while. 
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		*/            
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		void ContactViewUnavailable(
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		            MVPbkContactViewBase& aView ) ;
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		/**
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		* From MVPbkContactViewObserver  
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		* Called when a contact has been added to the view.
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		*/            
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		void ContactAddedToView(
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		            MVPbkContactViewBase& aView, 
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		            TInt aIndex, 
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		            const MVPbkContactLink& aContactLink );
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		/**
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		* From MVPbkContactViewObserver  
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		* Called when a contact has been removed from a view.
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		*/            
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		void ContactRemovedFromView(
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		            MVPbkContactViewBase& aView, 
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		            TInt aIndex, 
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		            const MVPbkContactLink& aContactLink ) ;
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		/**
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		* From MVPbkContactViewObserver  
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		* Called when an error occurs in the view.
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		*/            
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		void ContactViewError(
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		            MVPbkContactViewBase& aView, 
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		            TInt aError, 
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		            TBool aErrorNotified ) ;
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		            /**
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		* From MVPbkSingleContactOperationObserver  
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		* Called when the operation is completed.
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		*/
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         void VPbkSingleContactOperationComplete(MVPbkContactOperationBase& aOperation,MVPbkStoreContact* aContact ); 
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		/**
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		* From MVPbkSingleContactOperationObserver  
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		*  Called if the operation fails.
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		*/
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 		void VPbkSingleContactOperationFailed(
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 					MVPbkContactOperationBase& aOperation, 
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 					TInt aError );
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	private:
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		/**
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		* Fetches next chunk of data (client contacts data changes).
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		*/
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		void FetchNextContactL();
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		/**
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		* From CActive. Called when asynchronous operation completes.
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		*/
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		void RunL();
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		/**
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		* From CActive. Called when RunL leaves.
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		*/    
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		TInt RunError( TInt aError );
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		/**
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		* From CActive. Cancels operation.
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		*/
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		void DoCancel();
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		/**
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		* Checks if aItem is confidential or not.
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		* @param    aItem   Item that is checked.
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		* @return   TBool   ETrue if item is confidential.
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		*                   Otherwise EFalse is returned.
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		*/
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        TBool IsConfidentialL( MVPbkStoreContact& aItem );
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        /**
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		* Create a contact view of the store which is opened
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		*/
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        void CreateViewL();
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        /**
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		* Add the fetched contacts id and timestamp 
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		* to the snapshot.
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		* @param    aContact   Fetched contact to be 
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		*						added to snapshot
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		*/
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        void UpdateSnapshotL( MVPbkStoreContact* aContact );
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	private: // data
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		TRequestStatus* iCallerStatus;
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		TTime iFromTime;
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		CArrayFixSeg<TNSmlSnapshotItem>* iSnapshot;
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		TBool& iSnapshotRegistered;
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		TKeyArrayFix& iKey;
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		CNSmlChangeFinder& iChangeFinder;
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		TInt iCurrentSnapshotCounter;
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		CVPbkContactManager& iContactManager;
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        MVPbkContactStore& iStore;
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        MVPbkContactViewBase* iContactViewBase;
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        TInt iContactCount;
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	};
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#endif // __NSMLCONTACTSMODSFETCHER_H__
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// End of File