/*

* Copyright (c) 2009 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: isolated collection helper.

*

*/

#include <mpxcollectionhelperfactory.h>

#include <mpxcollectionuihelper.h>

#include <mpxcollectionopenutility.h>

#include "mpmpxisolatedcollectionhelper.h"

#include "mpxlog.h"

const TInt KIncrementalDelayNone = 0;

const TInt KIncrementalDelayHalfSecond = 1000000;

const TInt KIncrementalFetchBlockSize = 20;

const TInt KIncrementalNullOffset = 0;

/*!

    \class CMpMpxIsolatedCollectionHelper

    \brief Helper class to open an isolated collection.

    This is a helper class to open an insolated collection.

*/

/*!

 \internal

 Two-phased constructor.

 */

CMpMpxIsolatedCollectionHelper* CMpMpxIsolatedCollectionHelper::NewL( 

        MMpMpxIsolatedCollectionHelperObserver* aObserver )

    {

    CMpMpxIsolatedCollectionHelper* self = NewLC( aObserver );

    CleanupStack::Pop( self );

    return self;

    }

/*!

 \internal

 Two-phased constructor.

 */

CMpMpxIsolatedCollectionHelper* CMpMpxIsolatedCollectionHelper::NewLC( 

        MMpMpxIsolatedCollectionHelperObserver* aObserver )

    {

    CMpMpxIsolatedCollectionHelper* self =

            new ( ELeave ) CMpMpxIsolatedCollectionHelper( aObserver );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

/*!

 \internal

 Destructor

 */

CMpMpxIsolatedCollectionHelper::~CMpMpxIsolatedCollectionHelper()

    {

    delete iIncrementalOpenUtil;

    }

/*!

 \internal

 Opens an isolated collection with the /a path.

 */

void CMpMpxIsolatedCollectionHelper::OpenCollectionL( CMPXCollectionPath& aPath )

    {

    //Using incremental open to open the collection.

    // Cancel any reads

    iIncrementalOpenUtil->Stop();

    // Start the read

    iFirstIncrementalOpen = ETrue;

    RArray<TMPXAttribute> attrs;

    CleanupClosePushL( attrs );

    TArray<TMPXAttribute> ary = attrs.Array();

    iIncrementalOpenUtil->SetDelay( KIncrementalDelayNone );

    iIncrementalOpenUtil->StartL( aPath, ary, KIncrementalFetchBlockSize,

                                  KIncrementalNullOffset, CMPXCollectionOpenUtility::EFetchNormal );

    iIncrementalOpenUtil->SetDelay( KIncrementalDelayHalfSecond );

    CleanupStack::PopAndDestroy( &attrs );

    }

/*!

 \internal

 c++ Contructor

 */

CMpMpxIsolatedCollectionHelper::CMpMpxIsolatedCollectionHelper( MMpMpxIsolatedCollectionHelperObserver* aObserver )

    : iObserver( aObserver ),

      iIncrementalOpenUtil( 0 ),

      iFirstIncrementalOpen( EFalse )

    {

    }

/*!

 \internal

 Leaving constructor

 */

void CMpMpxIsolatedCollectionHelper::ConstructL()

    {

    iIncrementalOpenUtil = CMPXCollectionOpenUtility::NewL( this, KMcModeIsolated );

    }

/*!

 \internal

 reimp

 */

void CMpMpxIsolatedCollectionHelper::HandleOpenL( 

    const CMPXMedia& aEntries,

    TInt /*aIndex*/,

    TBool /*aComplete*/,

    TInt aError )

    {

    if ( iFirstIncrementalOpen )

        {

        iObserver->HandleIsolatedOpenL( aEntries, aError );

        iFirstIncrementalOpen = EFalse;

        }

    }

/*!

 \internal

  reimp

 */

void CMpMpxIsolatedCollectionHelper::HandleOpenL( 

    const CMPXCollectionPlaylist& /*aPlaylist*/,

    TInt /*aError*/ )

    {

    }

/*!

 \internal

  reimp

 */

void CMpMpxIsolatedCollectionHelper::HandleCollectionMessage( 

    CMPXMessage* /*aMsg*/,

    TInt /*aErr*/ )

    {

    }

/*!

 \internal

  reimp

 */

void CMpMpxIsolatedCollectionHelper::HandleCollectionMediaL( 

    const CMPXMedia& /*aMedia*/,

    TInt /*aError*/ )

    {

    }

//EOF