/*

* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:   Directory scanner

*

*/

#include "appmngr2scannerdir.h"         // CAppMngr2ScannerDir

#include "appmngr2scannerdirobserver.h" // MAppMngr2ScannerDirObserver

#include <driveinfo.h>                  // DriveInfo

_LIT( KBackslash, "\\" );

// ======== MEMBER FUNCTIONS ========

// ---------------------------------------------------------------------------

// CAppMngr2ScannerDir::NewLC()

// ---------------------------------------------------------------------------

//

CAppMngr2ScannerDir* CAppMngr2ScannerDir::NewL( RFs& aFs, const TDesC& aDir,

        MAppMngr2ScannerDirObserver& aObs )

    {

    CAppMngr2ScannerDir* self = new (ELeave) CAppMngr2ScannerDir( aFs, aObs );

    CleanupStack::PushL( self );

    self->ConstructL( aDir );

    CleanupStack::Pop( self );

    return self;

    }

// ---------------------------------------------------------------------------

// CAppMngr2ScannerDir::~CAppMngr2ScannerDir()

// ---------------------------------------------------------------------------

//

CAppMngr2ScannerDir::~CAppMngr2ScannerDir()

    {

    Cancel();

    delete iDir;

    }

// ---------------------------------------------------------------------------

// CAppMngr2ScannerDir::DirName()

// ---------------------------------------------------------------------------

//

const TDesC& CAppMngr2ScannerDir::DirName() const

    {

    if( iDir )

        {

        return *iDir;

        }

    return KNullDesC;

    }

// ---------------------------------------------------------------------------

// CAppMngr2ScannerDir::StartWatchingChanges()

// ---------------------------------------------------------------------------

//

void CAppMngr2ScannerDir::StartWatchingChanges()

    {

    if( !IsActive() )

        {

        iFs.NotifyChange( ENotifyEntry, iStatus, *iDir );

        SetActive();

        }

    }

// ---------------------------------------------------------------------------

// CAppMngr2ScannerDir::StopWatchingChanges()

// ---------------------------------------------------------------------------

//

void CAppMngr2ScannerDir::StopWatchingChanges()

    {

    if( IsActive() )

        {

        Cancel();

        }

    }

// ---------------------------------------------------------------------------

// CAppMngr2ScannerDir::DoCancel()

// ---------------------------------------------------------------------------

//

void CAppMngr2ScannerDir::DoCancel()

    {

    iFs.NotifyChangeCancel();

    }

// ---------------------------------------------------------------------------

// CAppMngr2ScannerDir::RunL()

// ---------------------------------------------------------------------------

//

void CAppMngr2ScannerDir::RunL()

    {

    // Status is KErrCancel when StopWatchingChanges() has been called

    if( iStatus.Int() == KErrNone )

        {

        iFs.NotifyChange( ENotifyEntry, iStatus, *iDir );

        SetActive();

        iObserver.DirectoryChangedL( *iDir );

        }

    }

// ---------------------------------------------------------------------------

// CAppMngr2ScannerDir::CAppMngr2ScannerDir()

// ---------------------------------------------------------------------------

//

CAppMngr2ScannerDir::CAppMngr2ScannerDir( RFs& aFs, MAppMngr2ScannerDirObserver& aObs ) :

        CActive( CActive::EPriorityStandard ), iObserver( aObs ), iFs( aFs )

    {

    CActiveScheduler::Add( this );

    }

// ---------------------------------------------------------------------------

// CAppMngr2ScannerDir::ConstructL()

// ---------------------------------------------------------------------------

//

void CAppMngr2ScannerDir::ConstructL( const TDesC& aDir )

    {

    // Check if aDir has trailing backslash, add it if it does not have.

    // RFs::NotifyChange() and also RApaLsSession::RecognizeFilesL() that scanner

    // uses require trailing backslashes in directory names, hence create iDir so

    // that is always ends with trailing backslash.

    if( aDir.Right( 1 ).Compare( KBackslash ) == 0 )

        {

        // RFs::IsValidName() does not accept trailing backslashes, so check the

        // the directory name first without trailing backslash

        TPtrC dirWithoutTrailingString( aDir.Left( aDir.Length() - 1 ) );

        if( !iFs.IsValidName( dirWithoutTrailingString ) )

            {

            User::LeaveIfError( KErrBadName );

            }

        iDir = aDir.AllocL();

        }

    else

        {

        // No trailing backslash, check the dir name and then add the backslash

        if( !iFs.IsValidName( aDir ) )

            {

            User::LeaveIfError( KErrBadName );

            }

        iDir = HBufC::NewL( aDir.Length() + 1 );

        TPtr dirPtr = iDir->Des();

        dirPtr.Copy( aDir );

        dirPtr.Append( KBackslash );

        }

    }