mtpdataproviders/mtpimagedp/src/cmtpimagedpmdeobserver.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Tue, 27 Apr 2010 17:30:23 +0300
branchRCL_3
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parent 3 8b094906a049
permissions -rw-r--r--
Revision: 201004 Kit: 201017
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// Copyright (c) 2009 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:
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//
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/**
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 @file
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 @internalTechnology
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*/
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#include <mdesession.h> 
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#include <mdeconstants.h>
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#include <mdequery.h>
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#include <centralrepository.h>
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#include <mtp/mmtpdataproviderframework.h>
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#include <mtp/mmtpobjectmgr.h>
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#include <mtp/cmtpobjectmetadata.h>
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#include <mtp/tmtptypeevent.h>
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#include "mtpdebug.h"
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#include "mtpimagedpconst.h"
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#include "cmtpimagedpmdeobserver.h"
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#include "cmtpimagedp.h"
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#include "cmtpimagedpobjectpropertymgr.h"
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#include "mtpimagedputilits.h"
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__FLOG_STMT(_LIT8(KComponent, "CMTPImageDpMdeObserver");)
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CMTPImageDpMdeObserver* CMTPImageDpMdeObserver::NewL(MMTPDataProviderFramework& aFramework, CMTPImageDataProvider& aDataProvider)
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    {
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    CMTPImageDpMdeObserver* self = new (ELeave) CMTPImageDpMdeObserver(aFramework, aDataProvider);
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    CleanupStack::PushL(self);
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    self->ConstructL();
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    CleanupStack::Pop(self);
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    return self;
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    }
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// --------------------------------------------------------------------------
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// Constructor
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// --------------------------------------------------------------------------
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//
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CMTPImageDpMdeObserver::CMTPImageDpMdeObserver(MMTPDataProviderFramework& aFramework, CMTPImageDataProvider& aDataProvider) :
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    iFramework(aFramework),
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    iDataProvider(aDataProvider),
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    iSubscribed(EFalse)
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    {
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    }
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void CMTPImageDpMdeObserver::ConstructL()
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    {
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    __FLOG_OPEN(KMTPSubsystem, KComponent);
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    __FLOG(_L8("CMTPImageDpMdeObserver::ConstructL - Entry"));
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    __FLOG(_L8("CMTPImageDpMdeObserver::ConstructL - Exit"));
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    }
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CMTPImageDpMdeObserver::~CMTPImageDpMdeObserver()
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    {
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    __FLOG(_L8("CMTPImageDpMdeObserver::~CMTPImageDpMdeObserver - Entry"));   
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    __FLOG(_L8("CMTPImageDpMdeObserver::~CMTPImageDpMdeObserver - Exit"));   
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    __FLOG_CLOSE;
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    }
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void CMTPImageDpMdeObserver::CreateMetadataL(const TParsePtrC& aParse, TMTPFormatCode aFormat, TUint32 aParentHandle, CMTPObjectMetaData& aMetaData)
0
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    {
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    TInt32 storageId = MTPImageDpUtilits::FindStorage(iFramework, aParse.FullName());
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    __FLOG_VA((_L16("Addition - New Image:%S"), &aParse.FullName()));
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    aMetaData.SetUint(CMTPObjectMetaData::EDataProviderId, iFramework.DataProviderId());
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    aMetaData.SetUint(CMTPObjectMetaData::EFormatCode, aFormat);
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    aMetaData.SetUint(CMTPObjectMetaData::EStorageId, storageId);
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    aMetaData.SetDesCL(CMTPObjectMetaData::ESuid, aParse.FullName());    
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    aMetaData.SetUint(CMTPObjectMetaData::EParentHandle, aParentHandle);
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    aMetaData.SetDesCL(CMTPObjectMetaData::EName, aParse.Name());
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    //Increate the new pictures variable
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    ++iNewPics;  
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    }
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void CMTPImageDpMdeObserver::ProcessMdeNotificationL(const RArray<TItemId>& aObjectIdArray, TObserverNotificationType /*aType*/)
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    {    
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    __FLOG_VA((_L8("CMTPImageDpMdeObserver::ProcessMdeNotificationL Start")));       
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    //Because image dp only subscribe add notification from MdS, only the add notifictions can reach here
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    //we ignore checking ENotifyAdd notification type to reduce complexity.    
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    CMdESession& mdeSession = iDataProvider.PropertyMgr().MdeSession();
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    CMdENamespaceDef& defaultNamespaceDef = mdeSession.GetDefaultNamespaceDefL();
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    CMdEObjectDef& imageObjDef = defaultNamespaceDef.GetObjectDefL(MdeConstants::Image::KImageObject);    
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    TInt objectCount = aObjectIdArray.Count();
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    for (TInt i(0); i < objectCount; ++i)
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        {
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        CMdEObject* mdeObject = mdeSession.GetObjectL(aObjectIdArray[i], imageObjDef);
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        if (mdeObject == NULL)
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            {
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            continue;
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            }
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        CleanupStack::PushL(mdeObject);
2
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        __FLOG_VA((_L16("Addition - ObjectId:%u, URI:%S"), aObjectIdArray[i], &mdeObject->Uri()));
0
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2
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        //filter out all image files other jpeg files       
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        TParsePtrC parse(mdeObject->Uri());
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        TMTPFormatCode format = iDataProvider.FindFormat(parse.Ext().Mid(1));
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        if (format != EMTPFormatCodeUndefined)
0
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            {
2
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            TUint32 handle = iFramework.ObjectMgr().HandleL(mdeObject->Uri());
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            if (handle == KMTPHandleNone)
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                {
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                /**
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                 * Try to find parent handle of new image file
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                 * if we can't find parent handle we should issue a notification to framework, let framework to enumerate new folder if need
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                 */
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                TUint32 parentHandle = MTPImageDpUtilits::FindParentHandleL(iFramework, iDataProvider, parse.FullName());
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                if (parentHandle == KMTPHandleNone)
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                    {
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                    __FLOG_VA((_L16("Notify framework - URI:%S"), &mdeObject->Uri()));
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                    TMTPNotificationParamsFolderChange param = {mdeObject->Uri()};                                       
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                    iFramework.NotifyFrameworkL(EMTPAddFolder, &param);
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                    //try to get parent handle if framework complete it's tasks
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                    parentHandle = MTPImageDpUtilits::FindParentHandleL(iFramework, iDataProvider, parse.FullName());
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                    __FLOG_VA((_L16("Framework enumeration parent handle:%u"), parentHandle));
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                    }
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                if (parentHandle != KMTPHandleNone)
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                    {
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                    CMTPObjectMetaData* object = CMTPObjectMetaData::NewLC();
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                    CreateMetadataL(parse, format, parentHandle, *object);
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                    iFramework.ObjectMgr().InsertObjectL(*object);                
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                    __FLOG_VA((_L16("Addition - New Handle:%u"), object->Uint(CMTPObjectMetaData::EHandle)));
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                    TMTPTypeEvent event;
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                    event.SetUint16(TMTPTypeEvent::EEventCode, EMTPEventCodeObjectAdded);
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                    event.SetUint32(TMTPTypeEvent::EEventSessionID, KMTPSessionAll);
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                    event.SetUint32(TMTPTypeEvent::EEventTransactionID, KMTPTransactionIdNone);
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   146
                  
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                    TUint32 handle = object->Uint(CMTPObjectMetaData::EHandle);            
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                    event.SetUint32(TMTPTypeEvent::EEventParameter1, handle);                    
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                    iFramework.SendEventL(event);
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                    __FLOG_VA((_L8("ProcessMdeNotificationL - EMTPEventCodeObjectAdd, object handle:%u"), handle));                    
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                    CleanupStack::PopAndDestroy(object);//object                 
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                    }
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                }
0
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            }
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        CleanupStack::PopAndDestroy(mdeObject);//mdeObject             
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        }    
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    __FLOG_VA((_L8("CMTPImageDpMdeObserver::ProcessMdeNotificationL - Exit")));
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    }
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   161
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/*
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 * After receiving object change notification, check if there is any dp subscribed right now.
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 * if none, store change into database
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 * if yes, check the type of file with subscribed providers, if there is any match, just forward
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 * the change to that dp, if none, store change into database.
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 */
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void CMTPImageDpMdeObserver::HandleObjectNotification(CMdESession& aSession,
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                                            TObserverNotificationType aType,
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                                            const RArray<TItemId>& aObjectIdArray)
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    {
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    TRAP_IGNORE(HandleObjectNotificationL(aSession, aType, aObjectIdArray));
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    }
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/*
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 * L Function
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 */
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void CMTPImageDpMdeObserver::HandleObjectNotificationL(CMdESession& /*aSession*/,
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                                                    TObserverNotificationType aType,
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                                                    const RArray<TItemId>& aObjectIdArray)
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    {   
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    __FLOG_VA((_L8("CMTPImageDpMdeObserver::HandleObjectNotificationL - changeType = %d"), aType));   
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    ProcessMdeNotificationL(aObjectIdArray, aType);
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    //Update RProperty to notify the subscribers.
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    if (iNewPics > 0)
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        {
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        __FLOG_1(_L16("CMTPImageDpMdeObserver::CMTPImageDpMdeObserver - New Pics: %u"), iNewPics);
2
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        iDataProvider.IncreaseNewPictures(iNewPics);
0
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        iNewPics = 0;
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        }
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    __FLOG(_L8("CMTPImageDpMdeObserver::CMTPImageDpMdeObserver - Exit"));
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    }
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/*
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 * Subscribe MdS notifications
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 */
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void CMTPImageDpMdeObserver::SubscribeForChangeNotificationL()
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    {    
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    __FLOG_VA((_L8("CMTPImageDpMdeObserver::SubscribeForChangeNotificationL"))); 
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    if (!iSubscribed)
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        {
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        CMdESession& mdeSession = iDataProvider.PropertyMgr().MdeSession();    
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        CMdENamespaceDef& def = mdeSession.GetDefaultNamespaceDefL();
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        CMdEObjectDef& imageObjDef = def.GetObjectDefL(MdeConstants::Image::KImageObject);
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        //Only subscribe add observer        
3
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        CMdELogicCondition* addCondition = CMdELogicCondition::NewLC(ELogicConditionOperatorAnd);        
2
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        addCondition->AddObjectConditionL(imageObjDef);                 
0
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        mdeSession.AddObjectObserverL(*this, addCondition, ENotifyAdd);
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        CleanupStack::Pop(addCondition);
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        iSubscribed = ETrue;
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        }
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    __FLOG(_L8("CMTPImageDpMdeObserver::SubscribeForChangeNotificationL - Exit")); 
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    }
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/*
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 * Unsubscribe MdS notifications
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 */
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void CMTPImageDpMdeObserver::UnsubscribeForChangeNotificationL()
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    {
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    __FLOG_VA((_L8("CMTPImageDpMdeObserver::UnsubscribeForChangeNotificationL"))); 
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    if (iSubscribed)
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        {
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        CMdESession& mdeSession = iDataProvider.PropertyMgr().MdeSession();  
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        mdeSession.RemoveObjectObserverL(*this);//add observer
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        iSubscribed = EFalse;
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        }
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    __FLOG(_L8("CMTPImageDpMdeObserver::UnsubscribeForChangeNotificationL - Exit")); 
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    }