mtpdataproviders/mtpimagedp/src/cmtpimagedpsetobjectreferences.cpp
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 16 Apr 2010 15:51:48 +0300
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permissions -rw-r--r--
Revision: 201005 Kit: 201015
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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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#include <mtp/cmtptypearray.h>
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#include <mtp/mmtpdataproviderframework.h>
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#include <mtp/tmtptyperequest.h>
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#include <mtp/cmtpobjectmetadata.h>
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#include <mtp/mmtpreferencemgr.h>
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#include <mtp/mmtpobjectmgr.h>
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#include "cmtpimagedpsetobjectreferences.h"
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#include "mtpimagedputilits.h"
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#include "cmtpimagedp.h"
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__FLOG_STMT(_LIT8(KComponent,"SetObjectReferences");)
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/**
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Two-phase construction method
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@param aPlugin The data provider plugin
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@param aFramework The data provider framework
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@param aConnection The connection from which the request comes
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@return a pointer to the created request processor object
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*/    
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MMTPRequestProcessor* CMTPImageDpSetObjectReferences::NewL(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection, CMTPImageDataProvider& /*aDataProvider*/)
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    {
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    CMTPImageDpSetObjectReferences* self = new (ELeave) CMTPImageDpSetObjectReferences(aFramework, aConnection);
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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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Destructor
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*/    
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CMTPImageDpSetObjectReferences::~CMTPImageDpSetObjectReferences()
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    {
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    __FLOG(_L8(">> CMTPImageDpSetObjectReferences::~CMTPImageDpSetObjectReferences"));
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    delete iReferences;
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    __FLOG(_L8("<< CMTPImageDpSetObjectReferences::~CMTPImageDpSetObjectReferences"));
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    __FLOG_CLOSE;
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    }
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/**
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Standard c++ constructor
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*/    
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CMTPImageDpSetObjectReferences::CMTPImageDpSetObjectReferences(MMTPDataProviderFramework& aFramework, MMTPConnection& aConnection)
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    :CMTPRequestProcessor(aFramework, aConnection, 0, NULL)
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    {
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    }
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/**
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Second phase constructor
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*/
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void CMTPImageDpSetObjectReferences::ConstructL()
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    {
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    __FLOG_OPEN(KMTPSubsystem, KComponent);
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    __FLOG(_L8(">> CMTPImageDpSetObjectReferences::ConstructL"));
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    __FLOG(_L8("<< CMTPImageDpSetObjectReferences::ConstructL"));
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    }
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TMTPResponseCode CMTPImageDpSetObjectReferences::CheckRequestL()
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    {
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    __FLOG(_L8(">> CMTPImageDpSetObjectReferences::CheckRequestL"));
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    TUint32 objectHandle = Request().Uint32(TMTPTypeRequest::ERequestParameter1);
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    CMTPObjectMetaData* objectInfo = CMTPObjectMetaData::NewLC();    
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    TMTPResponseCode responseCode = MTPImageDpUtilits::VerifyObjectHandleL(iFramework, objectHandle, *objectInfo);      
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    CleanupStack::PopAndDestroy(objectInfo);
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    __FLOG_VA((_L8("CheckRequestL - Exit with responseCode = 0x%04X"), responseCode));
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    __FLOG(_L8("<< CMTPImageDpSetObjectReferences::CheckRequestL"));
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    return responseCode;
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    }
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/**
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Apply the references to the specified object
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@return EFalse
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*/    
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TBool CMTPImageDpSetObjectReferences::DoHandleResponsePhaseL()
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    {
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    if(!VerifyReferenceHandlesL())
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        {
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        SendResponseL(EMTPRespCodeInvalidObjectReference);
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        }
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    else
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        {
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        MMTPReferenceMgr& referenceMgr = iFramework.ReferenceMgr();
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        TUint32 objectHandle = Request().Uint32(TMTPTypeRequest::ERequestParameter1);
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        referenceMgr.SetReferencesL(TMTPTypeUint32(objectHandle), *iReferences);
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        SendResponseL(EMTPRespCodeOK);
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        }
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    return EFalse;    
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    }
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/**
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GetReferences request handler
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*/    
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void CMTPImageDpSetObjectReferences::ServiceL()
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    {
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    __FLOG(_L8(">> CMTPImageDpCopyObject::ServiceL"));
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    delete iReferences;
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    iReferences = NULL;
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    iReferences = CMTPTypeArray::NewL(EMTPTypeAUINT32);
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    ReceiveDataL(*iReferences);
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    __FLOG(_L8("<< CMTPImageDpCopyObject::ServiceL"));
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    }
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TBool CMTPImageDpSetObjectReferences::HasDataphase() const
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    {
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    return ETrue;
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    }
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/**
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Verify if the references are valid handles to objects
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@return ETrue if all the references are good, otherwise, EFalse
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*/    
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TBool CMTPImageDpSetObjectReferences::VerifyReferenceHandlesL() const
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    {
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    __ASSERT_DEBUG(iReferences, User::Invariant());
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    TBool result = ETrue;
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    TInt count = iReferences->NumElements();
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    CMTPObjectMetaData* object(CMTPObjectMetaData::NewLC());
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    MMTPObjectMgr& objectMgr = iFramework.ObjectMgr();
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    TMTPTypeUint32 handle;
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    for(TInt i = 0; i < count; i++)
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        {
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        iReferences->ElementL(i, handle);
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        if(!objectMgr.ObjectL(handle, *object))
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            {
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            result = EFalse;
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            break;
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            }
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        }
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    CleanupStack::PopAndDestroy(object);
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    return result; 
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    }
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   151