author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 19 Aug 2010 10:24:28 +0300 | |
branch | RCL_3 |
changeset 23 | e42293e811d8 |
parent 18 | e257e2b6459d |
permissions | -rw-r--r-- |
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/* |
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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: Implement the operation: DeleteObject |
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* |
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*/ |
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|
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#include <mtp/mmtpobjectmgr.h> |
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#include <mtp/mmtpreferencemgr.h> |
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#include "cdeleteobject.h" |
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#include "mmmtpdplogger.h" |
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#include "mmmtpdpconfig.h" |
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#include "cmmmtpdpmetadataaccesswrapper.h" |
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#include "mmmtpdputility.h" |
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const TInt KMaxDeletionTimes = 10; |
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const TInt KMaxDeviceBusyTimes = 3; |
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const TInt KDeletionThreshold = 100 * 1000; // (100 millisec) |
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// ----------------------------------------------------------------------------- |
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// Verification data for the DeleteObject request |
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// ----------------------------------------------------------------------------- |
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// |
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const TMTPRequestElementInfo KMTPDeleteObjectPolicy[] = |
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{ |
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{ |
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TMTPTypeRequest::ERequestParameter1, |
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EMTPElementTypeObjectHandle, |
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EMTPElementAttrWrite, |
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1, |
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KMTPHandleAll, |
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0 |
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}, |
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}; |
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// ----------------------------------------------------------------------------- |
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// CDeleteObject::NewL |
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// Two-phase construction method |
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// CDeleteObject is an abstract class and shouldn't be instaniated. |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C MMmRequestProcessor* CDeleteObject::NewL( MMTPDataProviderFramework& aFramework, |
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MMTPConnection& aConnection, |
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MMmMtpDpConfig& aDpConfig ) |
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{ |
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CDeleteObject* self = new (ELeave) CDeleteObject( aFramework, aConnection, aDpConfig ); |
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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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void CDeleteObject::ConstructL() |
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{ |
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CActiveScheduler::Add( this ); |
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} |
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// ----------------------------------------------------------------------------- |
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// CDeleteObject::~CDeleteObject |
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// Destructor |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C CDeleteObject::~CDeleteObject() |
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{ |
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Cancel(); |
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iObjectsToDelete.Close(); |
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} |
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// ----------------------------------------------------------------------------- |
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// CDeleteObject::CDeleteObject |
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// Standard c++ constructor |
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// ----------------------------------------------------------------------------- |
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// |
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CDeleteObject::CDeleteObject( MMTPDataProviderFramework& aFramework, |
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MMTPConnection& aConnection, |
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MMmMtpDpConfig& aDpConfig ) : |
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CRequestProcessor( aFramework, |
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aConnection, |
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sizeof( KMTPDeleteObjectPolicy ) / sizeof( TMTPRequestElementInfo ), |
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KMTPDeleteObjectPolicy ), |
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iObjectsToDelete( KMmMtpRArrayGranularity ), |
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iDeleteError( KErrNone ), |
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iDpConfig( aDpConfig ) |
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{ |
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PRINT( _L( "Operation: DeleteObject(0x100B)" ) ); |
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} |
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// ----------------------------------------------------------------------------- |
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// CDeleteObject::ServiceL |
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// DeleteObject request handler |
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// ----------------------------------------------------------------------------- |
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// |
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EXPORT_C void CDeleteObject::ServiceL() |
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106 |
{ |
18
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|
107 |
MmMtpDpUtility::SetPSStatus( EMtpPSStatusActive ); |
17
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|
108 |
|
0
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iObjectsToDelete.Reset(); |
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iDeleteError = KErrNone; |
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TUint32 objectHandle = Request().Uint32( TMTPTypeRequest::ERequestParameter1 ); |
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112 |
|
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PRINT3( _L( "MM MTP <> CDeleteObject::ServiceL, objectHandle = 0x%x, numObject = %d, iDeleteError = %d" ), |
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objectHandle, |
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iObjectsToDelete.Count(), |
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iDeleteError ); |
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117 |
|
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// Check to see whether the request is to delete all files or a specific file/directory |
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if ( objectHandle == KMTPHandleAll ) |
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120 |
{ |
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iIsMultiDelete = ETrue; |
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// Get the complete list of all the media files that are to be deleted |
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GetObjectHandlesL( KMTPStorageAll, KMTPHandleNoParent ); |
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StartL(); |
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} |
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126 |
else |
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127 |
{ |
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iIsMultiDelete = EFalse; |
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// Not Owned the object |
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CMTPObjectMetaData* objectInfo = iRequestChecker->GetObjectInfo( objectHandle ); |
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131 |
|
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if ( objectInfo->Uint( CMTPObjectMetaData::EFormatCode ) == EMTPFormatCodeAssociation ) |
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133 |
{ |
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TUint parentHandle = objectInfo->Uint( CMTPObjectMetaData::EHandle ); |
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GetObjectHandlesL( KMTPStorageAll, parentHandle ); |
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if ( iObjectsToDelete.Count() > 0 ) |
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iIsMultiDelete = ETrue; |
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StartL(); |
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139 |
} |
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140 |
else |
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141 |
{ |
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142 |
DeleteObjectL( *objectInfo ); |
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143 |
ProcessFinalPhaseL(); |
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144 |
} |
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145 |
} |
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146 |
|
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147 |
PRINT( _L( "MM MTP <= CDeleteObject::ServiceL" ) ); |
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148 |
} |
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149 |
|
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150 |
// ----------------------------------------------------------------------------- |
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151 |
// MTPDeleteObject::StartL |
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152 |
// Control the deletion |
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// ----------------------------------------------------------------------------- |
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154 |
// |
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155 |
void CDeleteObject::StartL() |
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156 |
{ |
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157 |
TInt numObjectsToDelete = iObjectsToDelete.Count(); |
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PRINT2( _L( "MM MTP <> CDeleteObject::StartL, numObjectsToDelete = %d, iDeleteError = %d" ), |
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numObjectsToDelete, |
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160 |
iDeleteError ); |
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161 |
|
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TBool isOk = iDeleteError == KErrNone || iDeleteError == KErrNotFound; |
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163 |
if ( numObjectsToDelete > 0 && isOk ) |
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164 |
{ |
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165 |
//Set the active object going to delete the file |
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166 |
TRequestStatus* status = &iStatus; |
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User::RequestComplete( status, KErrNone ); |
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168 |
SetActive(); |
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169 |
} |
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170 |
else |
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171 |
{ |
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172 |
ProcessFinalPhaseL(); |
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173 |
} |
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174 |
PRINT( _L( "MM MTP <= CDeleteObject::StartL" ) ); |
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175 |
} |
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176 |
|
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177 |
// ----------------------------------------------------------------------------- |
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178 |
// CDeleteObject::RunL |
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179 |
// AO Run method, deletes a selection of files on the system |
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180 |
// ----------------------------------------------------------------------------- |
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181 |
// |
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182 |
EXPORT_C void CDeleteObject::RunL() |
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183 |
{ |
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184 |
TInt numObjectsToDelete = iObjectsToDelete.Count(); |
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185 |
PRINT1( _L( "MM MTP => CDeleteObject::RunL, numObjectsToDelete = %d" ), |
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186 |
numObjectsToDelete ); |
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187 |
|
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188 |
if ( numObjectsToDelete > 0 ) |
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189 |
{ |
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190 |
// Get the next object |
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191 |
CMTPObjectMetaData* objectInfo = CMTPObjectMetaData::NewLC(); // + objectInfo |
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|
192 |
|
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193 |
TUint32 handle = iObjectsToDelete[0]; |
11
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Revision: 201011
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|
194 |
iFramework.ObjectMgr().ObjectL( handle, *objectInfo ); |
18
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|
195 |
PRINT2( _L( "MM MTP <> CDeleteObject::RunL delete object handle is 0x%x, fileName is %S" ), |
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196 |
handle, |
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197 |
&( objectInfo->DesC( CMTPObjectMetaData::ESuid ) ) ); |
0
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|
198 |
|
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199 |
if ( objectInfo->Uint( CMTPObjectMetaData::EFormatCode ) == EMTPFormatCodeAssociation ) |
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|
200 |
{ |
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|
201 |
TUint parentHandle = objectInfo->Uint( CMTPObjectMetaData::EHandle ); |
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202 |
GetObjectHandlesL( KMTPStorageAll, parentHandle ); |
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203 |
} |
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204 |
else |
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205 |
{ |
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206 |
DeleteObjectL( *objectInfo ); |
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|
207 |
} |
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|
208 |
|
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209 |
CleanupStack::PopAndDestroy( objectInfo ); // - objectInfo |
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210 |
|
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iObjectsToDelete.Remove( 0 ); |
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} |
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|
213 |
|
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// Start the process again to read the next row... |
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StartL(); |
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PRINT( _L( "MM MTP <= CDeleteObject::RunL" ) ); |
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} |
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218 |
|
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// ----------------------------------------------------------------------------- |
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// CDeleteObject::DeleteObjectL() |
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// Deletes the object from the file system and the object from the store |
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// ----------------------------------------------------------------------------- |
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// |
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void CDeleteObject::DeleteObjectL( const CMTPObjectMetaData& aObjectInfo ) |
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225 |
{ |
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TPtrC fileName( aObjectInfo.DesC( CMTPObjectMetaData::ESuid ) ); |
0
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PRINT1( _L( "MM MTP <> CDeleteObject::DeleteObjectL fileName = %S" ), &fileName ); |
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228 |
|
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// To capture special situation: After copy, move, rename playlist folder name, |
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// record in MPX is not inlined with framework db, playlist should not be deleted |
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// until next session. |
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// This is used to keep the same behavior in mass storage and device file manager. |
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if ( aObjectInfo.Uint( CMTPObjectMetaData::EFormatCode ) |
0
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== EMTPFormatCodeAbstractAudioVideoPlaylist |
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&& !iDpConfig.GetWrapperL().IsExistL( fileName ) ) |
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236 |
{ |
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iDeleteError = KErrGeneral; |
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PRINT( _L( "MM MTP <= CDeleteObject::DeleteObjectL playlist file not exist in the MPX DB" ) ); |
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return; |
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240 |
} |
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241 |
|
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242 |
// 1. Delete object from file system |
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243 |
TEntry fileInfo; |
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iFramework.Fs().Entry( fileName, fileInfo ); |
0
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if ( fileInfo.IsReadOnly() ) |
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246 |
{ |
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iDeleteError = KErrAccessDenied; |
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PRINT1( _L( "MM MTP <= CDeleteObject::DeleteObjectL, \"%S\" is a read-only file"), &fileName ); |
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249 |
return; |
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250 |
} |
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// Some other component might be holding on to the file (MDS background harvesting), |
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// try again after 100 millisec, up to 10 times, before give up |
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TInt count = KMaxDeletionTimes; |
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while ( count > 0 ) |
0
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255 |
{ |
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iDeleteError = iFramework.Fs().Delete( fileName ); |
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if ( iDeleteError == KErrNone || iDeleteError == KErrNotFound ) |
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258 |
{ |
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break; |
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260 |
} |
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else if ( ( iDeleteError == KErrInUse ) && ( count > 1 ) ) |
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262 |
{ |
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User::After( KDeletionThreshold ); |
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count--; |
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265 |
} |
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266 |
else |
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267 |
{ |
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PRINT1( _L( "MM MTP <= CDeleteObject::DeleteObjectL, Delete from file system failed, err = %d" ), iDeleteError ); |
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269 |
return; |
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270 |
} |
0
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271 |
} |
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272 |
|
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273 |
// 2. Delete object from metadata db |
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274 |
TRAP( iDeleteError, iDpConfig.GetWrapperL().DeleteObjectL( aObjectInfo ) ); |
0
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275 |
PRINT1( _L( "MM MTP <> CDeleteObject::DeleteObjectL, Delete from Media DB, err = %d" ), iDeleteError ); |
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|
276 |
|
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277 |
// 3. Delete object from framework db |
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278 |
iFramework.ObjectMgr().RemoveObjectL( aObjectInfo.Uint( CMTPObjectMetaData::EHandle ) ); |
0
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|
279 |
|
8
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|
280 |
// 4. If the object has references, Delete references from reference manager |
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281 |
if ( MmMtpDpUtility::HasReference( aObjectInfo.Uint( CMTPObjectMetaData::EFormatCode ) ) ) |
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|
282 |
iFramework.ReferenceMgr().RemoveReferencesL( aObjectInfo.DesC( CMTPObjectMetaData::ESuid ) ); |
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0
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|
283 |
|
0
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284 |
PRINT( _L( "MM MTP <= CDeleteObject::DeleteObjectL" ) ); |
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|
285 |
} |
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|
286 |
|
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287 |
// ----------------------------------------------------------------------------- |
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288 |
// CDeleteObject::DoCancel |
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289 |
// Used to cancel the deletion of the files |
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290 |
// ----------------------------------------------------------------------------- |
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291 |
// |
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292 |
EXPORT_C void CDeleteObject::DoCancel() |
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|
293 |
{ |
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294 |
TRAP_IGNORE( ProcessFinalPhaseL() ); |
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295 |
} |
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|
296 |
|
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|
297 |
// ----------------------------------------------------------------------------- |
23
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|
298 |
// CDeleteObject::DoHandleCompletingPhaseL |
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299 |
// Completeing phase Handler |
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|
300 |
// ----------------------------------------------------------------------------- |
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|
301 |
// |
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|
302 |
EXPORT_C TBool CDeleteObject::DoHandleCompletingPhaseL() |
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|
303 |
{ |
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Revision: 201031
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|
304 |
CRequestProcessor::DoHandleCompletingPhaseL(); |
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Revision: 201031
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|
305 |
|
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|
306 |
// If the response code is EMTPRespCodeDeviceBusy, don't release this object |
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|
307 |
TBool result = !iDeviceBusy; |
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|
308 |
|
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|
309 |
PRINT2( _L( "MM MTP <> CDeleteObject::DoHandleCompletingPhaseL iDeleteError= %d, result = %d" ), |
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|
310 |
iDeleteError, |
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result ); |
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|
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return result; |
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} |
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|
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// ----------------------------------------------------------------------------- |
0
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// CDeleteObject::ProcessFinalPhaseL |
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// Delete all of the associations if file deletion was successful |
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// Then signals that the deletion has been completed |
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// ----------------------------------------------------------------------------- |
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// |
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void CDeleteObject::ProcessFinalPhaseL() |
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{ |
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PRINT( _L( "MM MTP => CDeleteObject::ProcessFinalPhaseL" ) ); |
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325 |
|
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TInt num = iObjectsToDelete.Count(); |
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TBool isOk = iDeleteError == KErrNone || iDeleteError == KErrNotFound; |
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iDeviceBusy = EFalse; |
0
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329 |
|
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if ( num == 0 && isOk ) |
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{ |
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SendResponseL( EMTPRespCodeOK ); |
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} |
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else if ( iIsMultiDelete && !isOk ) |
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335 |
{ |
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SendResponseL( EMTPRespCodePartialDeletion ); |
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} |
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else if ( !iIsMultiDelete && iDeleteError == KErrAccessDenied ) |
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{ |
0
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SendResponseL( EMTPRespCodeObjectWriteProtected ); |
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} |
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else if ( iDeleteError == KErrInUse |
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&& iCountDeviceBusyError < KMaxDeviceBusyTimes ) |
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{ |
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iCountDeviceBusyError++; |
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SendResponseL( EMTPRespCodeDeviceBusy ); |
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iDeviceBusy = ETrue; |
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} |
0
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else |
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350 |
{ |
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SendResponseL( EMTPRespCodeAccessDenied ); |
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} |
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} |
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354 |
|
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// ----------------------------------------------------------------------------- |
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// CDeleteObject::GetObjectHandlesL |
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// Gets all object handles (for GetObjectHandlesL) |
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// ----------------------------------------------------------------------------- |
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// |
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void CDeleteObject::GetObjectHandlesL( TUint32 aStorageId, |
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TUint32 aParentHandle ) |
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362 |
{ |
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PRINT2( _L( "MM MTP => CDeleteObject::GetObjectHandlesL, StorageId = 0x%x, ParentHandle = 0x%x" ), |
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aStorageId, aParentHandle ); |
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RMTPObjectMgrQueryContext context; |
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RArray<TUint> handles; |
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CleanupClosePushL( context ); // + context |
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CleanupClosePushL( handles ); // + handles |
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369 |
|
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TMTPObjectMgrQueryParams params( aStorageId, KMTPFormatsAll, aParentHandle ); |
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371 |
|
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do |
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373 |
{ |
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iFramework.ObjectMgr().GetObjectHandlesL( params, context, handles ); |
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375 |
|
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for ( TInt i = 0; i < handles.Count(); i++ ) |
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377 |
{ |
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if ( iFramework.ObjectMgr().ObjectOwnerId( handles[i] ) |
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== iFramework.DataProviderId() ) |
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380 |
{ |
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iObjectsToDelete.Append( handles[i] ); |
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382 |
} |
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// TODO: should not know dp id of device dp, |
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// else if ( iFramework.ObjectMgr().ObjectOwnerId( handles[i] ) == 0 ) // We know that the device dp id is always 0, otherwise the whole MTP won't work. |
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// iParentHandles.AppendL( handles[i] ); |
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else |
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387 |
{ |
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CMTPObjectMetaData* objectInfo = CMTPObjectMetaData::NewLC(); // + objectInfo |
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389 |
iFramework.ObjectMgr().ObjectL( handles[i], *objectInfo ); |
0
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if ( EMTPFormatCodeAssociation == objectInfo->Uint( CMTPObjectMetaData::EFormatCode ) ) |
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391 |
{ |
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GetObjectHandlesL( KMTPStorageAll, handles[i] ); |
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393 |
} |
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CleanupStack::PopAndDestroy( objectInfo ); // - objectInfo |
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395 |
} |
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396 |
} |
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397 |
} |
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while ( !context.QueryComplete() ); |
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|
399 |
|
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CleanupStack::PopAndDestroy( &handles ); // - handles |
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CleanupStack::PopAndDestroy( &context ); // - context |
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|
402 |
|
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|
403 |
PRINT( _L( "MM MTP <= CDeleteObject::GetObjectHandlesL" ) ); |
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404 |
} |
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|
405 |
|
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406 |
// end of file |