omadrm/drmengine/utils/src/dirwatcher.cpp
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/*
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* Copyright (c) 2005-2010 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 "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:  Implementation of the RDB watcher
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*
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*/
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#include <e32def.h>
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#include <e32base.h>
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#include <f32file.h>
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#include <sysutil.h>
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#include "dirwatcher.h"
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#include "dbwatcher.h"
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#include "drmlog.h"
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static const TNotifyType KWatchTrigger = ENotifyEntry;
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// ======== MEMBER FUNCTIONS ========
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void CDirWatcher::ConstructL( const TDesC& aDir )
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    {
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    DRMLOG( _L( "CDirWatcher::ConstructL <-" ) );
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    iDir.Copy( aDir );    
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    CActiveScheduler::Add( this );
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    DRMLOG( _L( "CDirWatcher::ConstructL ->" ) );
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    }
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CDirWatcher* CDirWatcher::NewL( MWatcherObserver& aObserver, RFs& aFs, const TDesC& aDir )
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    {
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    CDirWatcher* self = new( ELeave ) CDirWatcher( aObserver, aFs );
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    CleanupStack::PushL( self );
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    self->ConstructL( aDir );
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    CleanupStack::Pop( self );
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    return self;
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    }
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CDirWatcher::CDirWatcher( MWatcherObserver& aObserver, RFs& aFs ):
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    CActive( EPriorityStandard ),
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    iFs( aFs ),
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    iObserver( aObserver )
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    {
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    DRMLOG( _L( "CDirWatcher::CDirWatcher ->" ) );
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    DRMLOG( _L( "CDirWatcher::CDirWatcher <-" ) );
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    }
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CDirWatcher::~CDirWatcher()
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    {
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    DRMLOG( _L( "CDirWatcher::~CDirWatcher ->" ) );
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    Cancel();
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    DRMLOG( _L( "CDirWatcher::~CDirWatcher <-" ) );
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    }
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void CDirWatcher::StartWatching()
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    {
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    DRMLOG( _L( "CDirWatcher::StartWatching ->" ) );
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    DRMLOG( iDir );
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    Cancel();
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    iFs.NotifyChangeCancel();
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    iFs.NotifyChange( KWatchTrigger, iStatus, iDir );
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    SetActive();
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    DRMLOG( _L( "CDirWatcher::StartWatching <-" ) );
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    }
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void CDirWatcher::DoCancel()
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    {
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    DRMLOG( _L( "CDirWatcher::DoCancel ->" ) );
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    iFs.NotifyChangeCancel();
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    DRMLOG( _L( "CDirWatcher::DoCancel <-" ) );
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    }
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void CDirWatcher::RunL()
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    {
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    TBuf<256> logBuffer;
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    TFileName object;
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    DRMLOG( _L( "CDirWatcher::RunL ->" ) );
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    DRMLOG( iDir );
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    logBuffer.AppendNum( iStatus.Int() );
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    DRMLOG( logBuffer );
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    if ( iStatus == KErrNone )
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        {
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        object.Copy( KDirIdentifier );
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        object.Append( iDir );
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        iObserver.WatchedObjectChangedL( object );
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        }
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    iFs.NotifyChange( KWatchTrigger, iStatus, iDir );
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    SetActive();
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    DRMLOG( _L( "CDirWatcher::RunL <-" ) );
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    }