author | William Roberts <williamr@symbian.org> |
Wed, 15 Sep 2010 17:32:31 +0100 | |
changeset 87 | b19f22d9e323 |
parent 60 | 30f14686fb04 |
child 90 | 3ac3aaebaee5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010 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 the License "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: Active callback for Backup/Restore observer. |
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* |
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*/ |
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#include <bautils.h> |
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#include "hsbackuprestoreactivecallback.h" |
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#include "hsbackuprestoreobserver.h" |
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/*! |
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\class CHsBURActiveCallback |
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\ingroup group_hsdomainmodel |
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\brief B&R active callback. |
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Home screen active callback in backup/restore. |
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*/ |
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/*! |
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Constructor. |
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\a observer Backup restore observer |
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*/ |
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CHsBURActiveCallback* CHsBURActiveCallback::NewL(HsBackupRestoreObserver* observer) |
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{ |
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CHsBURActiveCallback* self = |
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new( ELeave ) CHsBURActiveCallback(observer); |
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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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CHsBURActiveCallback::~CHsBURActiveCallback() |
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{ |
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} |
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/*! |
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This method informs the active backup data client that all |
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snapshots have been supplied. If the client has not |
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received a snapshot then it should perform a base backup. |
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Inform that all data has been backed up or restored. |
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*/ |
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void CHsBURActiveCallback::AllSnapshotsSuppliedL() |
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{ |
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// No implementation needed. Must not leave |
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} |
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/*! |
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This method receives all or part of a snapshot of data to allow |
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calculation of an incremental backup. The snapshot is one that |
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was previously supplied by the data owner. The snapshot data |
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should be read from the location supplied. The snapshot data may |
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be larger than the location supplied in which case the routine |
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will be called repeatedly until all data has been supplied. |
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Snapshot data will also be supplied as part of a restore operation |
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@param aDrive the drive being backed up |
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@param aBuffer a pointer to the base of the location from whence |
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data can be copied. |
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@param aLastSection ETrue if this is the last section of snapshot |
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data, else EFalse. |
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Not supported. |
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*/ |
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void CHsBURActiveCallback::ReceiveSnapshotDataL( |
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TDriveNumber /*aDrive*/, TDesC8& /*aBuffer*/, TBool /*aLastSection*/) |
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{ |
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// No implementation needed |
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User::Leave( KErrNotSupported ); |
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} |
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/*! |
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This method returns the expected size of backup data that will be |
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supplied. If an incremental backup is underway then this method |
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then this method will not be called until after |
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ReceiveSnapshotDataL(). The size data will be used for the purpose |
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of tracking progess during a backup. If it is inaccurate then the |
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user may see irregular progress but the actual backup data will |
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not be affected so it is acceptable to return an estimated value. |
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@param aDrive the drive being backed up. |
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@return the size of the data that will be returned |
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Make a guess about data size. |
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*/ |
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TUint CHsBURActiveCallback::GetExpectedDataSize( |
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TDriveNumber /*aDrive*/) |
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{ |
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// No implementation needed |
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return 0; |
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} |
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|
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/*! |
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This method returns a snapshot of data to accompany a backup. The |
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snapshot is expected to contain details on files / data being |
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backed up. The format of the snapshot is only meaningful to the |
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data owner. The snapshot will be supplied if the data owner is |
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asked for an incremental backup and for a restore operation. The |
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snapshot data should be copied to the location supplied. |
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|
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The snapshot data may be larger than the location supplied in |
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which case the routine will be called repeatedly until all data |
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has been retrieved. |
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|
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@param aDrive the drive being backed up |
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@param aBuffer a pointer to the base of the location where data |
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can be copied. |
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@param aFinished on return ETrue if all data has been returned |
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for this drive, else EFalse. |
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|
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Not supported. |
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*/ |
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void CHsBURActiveCallback::GetSnapshotDataL( |
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TDriveNumber /*aDrive*/, TPtr8& /*aBuffer*/, TBool& /*aFinished*/) |
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{ |
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// No implementation needed |
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User::Leave( KErrNotSupported ); |
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} |
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136 |
|
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/*! |
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This method prepares the implementor to return backup data. It |
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will be followed by a sequence of calls to request the actual |
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data. |
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141 |
|
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@param aDrive the drive being backed up. |
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|
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Initialize for backup. |
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*/ |
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void CHsBURActiveCallback::InitialiseGetBackupDataL( |
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TDriveNumber /*aDrive*/) |
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{ |
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iObserver->backupRestoreStarted(); |
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} |
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151 |
|
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/*! |
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This method requests a section of backup data. |
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InitialiseGetBackupDataL() will have been called previously to |
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specify the drive concerned. The data returned may be base or |
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incremental depending on the type of backup and the capability of |
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the data owner. |
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158 |
|
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@param aBuffer a pointer to the base of the location where data |
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can be copied. |
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@param aFinished on return ETrue if all data has been returned |
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for this drive, else EFalse. |
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*/ |
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void CHsBURActiveCallback::GetBackupDataSectionL( |
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TPtr8& /*aBuffer*/, TBool& aFinished) |
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{ |
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// No data for active backup |
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aFinished = ETrue; |
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} |
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|
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/*! |
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This method prepares the implementor to receive base restore data |
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for a drive. It will be followed by a sequence of calls to supply |
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the actual data. |
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|
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@param aDrive the drive being restored. |
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|
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Initialize restore. |
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*/ |
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void CHsBURActiveCallback::InitialiseRestoreBaseDataL( |
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TDriveNumber /*aDrive*/ ) |
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{ |
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// No implementation needed |
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User::Leave( KErrNotSupported ); |
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} |
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|
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/*! |
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This method receives a section of base restore data. |
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InitialiseRestoreBaseDataL() will have been called previously to |
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specify the drive concerned. |
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191 |
|
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@param aBuffer a pointer to the base of the location whence data |
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can be read. |
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@param aFinished ETrue if all data has been returned for this |
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drive, else EFalse. |
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|
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Run state machine for restore. Receive stream from BUR engine and turn it |
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to file(s). |
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*/ |
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void CHsBURActiveCallback::RestoreBaseDataSectionL( |
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TDesC8& /*aBuffer*/, TBool /*aFinished*/ ) |
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{ |
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// No implementation needed |
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User::Leave( KErrNotSupported ); |
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} |
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206 |
|
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/*! |
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This method prepares the implementor to receive incremental |
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restore data for a drive. It will be followed by a sequence |
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of calls to supply the actual data. If multiple increments |
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are supplied then this methid will be called before each increment |
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@param aDrive the drive being restored. |
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Not supported. |
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*/ |
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void CHsBURActiveCallback::InitialiseRestoreIncrementDataL( |
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TDriveNumber /*aDrive*/) |
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{ |
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// No implementation needed |
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User::Leave( KErrNotSupported ); |
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} |
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/*! |
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This method receives a section of increment restore data. |
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InitialiseRestoreIncrementDataL() will have been called |
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previously to specify the drive concerned. |
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|
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@param aBuffer a pointer to the base of the location whence data |
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can be read. |
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@param aFinished ETrue if all data has been returned for this |
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increment, else EFalse. |
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|
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Not supported. |
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*/ |
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void CHsBURActiveCallback::RestoreIncrementDataSectionL( |
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TDesC8& /*aBuffer*/, TBool /*aFinished*/) |
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{ |
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// No implementation needed |
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User::Leave( KErrNotSupported ); |
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} |
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/*! |
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This method is called when all data to be restored has been |
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supplied. |
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|
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@param aDrive the drive being restored. |
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|
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Called when restore is complete - sets data back to initial state. |
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*/ |
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void CHsBURActiveCallback::RestoreComplete(TDriveNumber /*aDrive*/) |
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{ |
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// No implementation needed |
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} |
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/*! |
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This method is called if copying of data is terminated prematurely |
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to allow the implementor to tidy up. The same method applies to |
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all types of data and to backup and restore. |
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Tidy up when operation is over. |
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*/ |
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void CHsBURActiveCallback::TerminateMultiStageOperation() |
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{ |
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// No implementation needed |
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} |
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/*! |
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Gets a 32-bit checksum for its private data. |
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This routine is for test purposes. It must be implemented but an |
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invariant checksum value can be provided. Some tests may cause |
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checksum values to be compared. |
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|
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@param aDrive the drive containing data being checksummed |
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@return the 32-bit checksum |
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*/ |
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TUint CHsBURActiveCallback::GetDataChecksum(TDriveNumber /*aDrive*/) |
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{ |
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// No implementation needed |
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return 0; |
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} |
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/*! |
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C++ constructor. |
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*/ |
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CHsBURActiveCallback::CHsBURActiveCallback(HsBackupRestoreObserver* observer) |
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{ |
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iObserver = observer; |
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} |
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/*! |
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2nd phase constructor. |
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*/ |
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void CHsBURActiveCallback::ConstructL() |
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{ |
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} |
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|
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// End of file |