/*

* Copyright (c) 2002-2006 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:  Asynchronous refresher for refreshing the CGflmNavigatorModel

*

*/

// INCLUDE FILES

#include "CFileManagerRefresher.h"

#include "MFileManagerProcessObserver.h"

#include "CGflmNavigatorModel.h"

#include "FileManagerDebug.h"

#include <e32std.h>

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

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

// CFileManagerRefresher::CFileManagerRefresher

// C++ default constructor can NOT contain any code, that

// might leave.

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

//

CFileManagerRefresher::CFileManagerRefresher( CGflmNavigatorModel& aModel ) :

        CActive( CActive::EPriorityStandard ),

        iModel( aModel )

    {

    }

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

// CFileManagerRefresher::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CFileManagerRefresher::ConstructL()

    {

    CActiveScheduler::Add( this );

    }

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

// CFileManagerRefresher::NewL

// Two-phased constructor.

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

//

CFileManagerRefresher* CFileManagerRefresher::NewL( CGflmNavigatorModel& aModel )

    {

    CFileManagerRefresher* self =

        new( ELeave ) CFileManagerRefresher( aModel );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// CFileManagerRefresher::~CFileManagerRefresher()

//

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

//

CFileManagerRefresher::~CFileManagerRefresher()

    {

    Cancel();

    }

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

// CFileManagerRefresher::RunL

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

//

void CFileManagerRefresher::RunL()

    {

    FUNC_LOG

    TInt err( iStatus.Int() );

    LOG_IF_ERROR1( err, "CFileManagerRefresher::RunL()-err=%d", err )

    if( iObserver )

        {

        iObserver->RefreshStoppedL();

        if ( err == KErrCancel )

            {

            // For going back to parent folder

            iObserver->Error( KErrPathNotFound );

            }

        }

    // Forward OOM, suppress other errors

    if ( err == KErrNoMemory )

        {

        User::Leave( err );

        }

    }

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

// CFileManagerRefresher::RunError

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

//

TInt CFileManagerRefresher::RunError( TInt aError )

    {

    ERROR_LOG1( "CFileManagerRefresher::RunError()-err=%d", aError )

    return aError;

    }

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

// CFileManagerRefresher::DoCancel

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

//

void CFileManagerRefresher::DoCancel()

    {

    FUNC_LOG

    iModel.CancelRefresh();

    }

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

// CFileManagerRefresher::Refresh

// Initiates the model refreshing

// (other items were commented in a header).

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

//

void CFileManagerRefresher::Refresh( TGflmRefreshMode aRefreshMode )

    {

    FUNC_LOG

    //  If already active, return

    if( IsActive() )

        {

        ERROR_LOG( "CFileManagerRefresher::Refresh()-Already active" )

        return;

        }

    TInt err( KErrNone );

    if ( iObserver )

        {

        TRAP( err, iObserver->RefreshStartedL() );

        }

    if ( err )

        {

        ERROR_LOG1( "CFileManagerRefresher::Refresh()-Before err=%d", err )

        return;

        }

    // Try to start the refresh operation

    TRAP( err, iModel.RefreshListL( iStatus, aRefreshMode ) );

    // If refreshing couldn't be started, notify observer and return

    if ( err )

        {

        ERROR_LOG1( "CFileManagerRefresher::Refresh()-After err=%d", err )

        if( iObserver )

            {

            TRAP_IGNORE( iObserver->RefreshStoppedL() );

            }

        return;

        }

    // Refreshing was started, set active and wait for asynchronous

    // request to complete

    SetActive();

    }

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

// CFileManagerRefresher::SetObserver

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

//

void CFileManagerRefresher::SetObserver( MFileManagerProcessObserver* aObserver )

    {

    // Set the observer if not active

    if( !IsActive() )

        {

        iObserver = aObserver;

        }

    }

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

// CFileManagerRefresher::CancelRefresh

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

//

TBool CFileManagerRefresher::CancelRefresh()

    {

    FUNC_LOG

    TBool ret( IsActive() );

    Cancel();

    return ret;

    }

//  End of File