/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "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:  Implementation of CHttpCacheObserver

*

*/

// INCLUDE FILES

#include "HttpCacheObserver.h"

#include "HttpCacheHandler.h"

// EXTERNAL DATA STRUCTURES

// EXTERNAL FUNCTION PROTOTYPES

// CONSTANTS

// MACROS

// LOCAL CONSTANTS AND MACROS

// MODULE DATA STRUCTURES

// LOCAL FUNCTION PROTOTYPES

// FORWARD DECLARATIONS

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

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

// CHttpCacheObserver::CHttpCacheObserver

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

// might leave.

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

//

CHttpCacheObserver::CHttpCacheObserver(CHttpCacheHandler* aHttpCacheHandler)

    : CActive( CActive::EPriorityIdle ),

      iHttpCacheHandler(aHttpCacheHandler)

    {

    CActiveScheduler::Add(this);

    }

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

// CHttpCacheObserver::ConstructL

// Symbian 2nd phase constructor can leave.

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

//

void CHttpCacheObserver::ConstructL(const HBufC* aDirectory, const HBufC* aIndexFile)

    {

    User::LeaveIfError(iFsSession.Connect());

    iFileName = HBufC::NewL(aDirectory->Length() + aIndexFile->Length());

    iFileName->Des().Copy(*aDirectory);

    iFileName->Des().Append(*aIndexFile);

    }

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

// CHttpCacheObserver::NewL

// Two-phased constructor.

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

//

CHttpCacheObserver* CHttpCacheObserver::NewL( const HBufC* aDirectory, const HBufC* aIndexFile,

                                                         CHttpCacheHandler* aHttpCacheHandler)

    {

    CHttpCacheObserver* self = new( ELeave ) CHttpCacheObserver(aHttpCacheHandler);

    CleanupStack::PushL( self );

    self->ConstructL(aDirectory, aIndexFile);

    CleanupStack::Pop();

    return self;

    }

// Destructor

CHttpCacheObserver::~CHttpCacheObserver()

    {

    Cancel();

    delete iFileName;

    iFsSession.Close();

    }

void CHttpCacheObserver::Queue()

    {

    if(IsActive())

        {

        User::WaitForAnyRequest();  // consume signal

        }

    else

        {

        SetActive();

        }

    // queue next notification

    iFsSession.NotifyChange(ENotifyWrite, iStatus, *iFileName);

    }

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

// CHttpCacheObserver::RunL

//

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

//

void CHttpCacheObserver::RunL()

    {

    Queue();

    iHttpCacheHandler->UpdateLookupTable();

    }

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

// CHttpCacheObserver::RunError

//

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

//

TInt CHttpCacheObserver::RunError(TInt /*aError*/)

    {

    return KErrNone;

    }

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

// CHttpCacheObserver::DoCancel

//

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

//

void CHttpCacheObserver::DoCancel()

    {

    iFsSession.NotifyChangeCancel(iStatus);

    }

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

// CHttpCacheObserver::StartObserver

//

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

//

void CHttpCacheObserver::StartObserver()

    {

    if (!IsActive())

        {

        iFsSession.NotifyChange(ENotifyWrite, iStatus, *iFileName);

        SetActive();

        }

    }

//  End of File