// Copyright (c) 2006-2009 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:

//

/**

 @file

 @internalComponent

*/

#include <e32std.h>

#include "cmtpdevicedatastore.h"

#include "cmtpdevicedpconfigmgr.h"

#include "cmtpstoragewatcher.h"

#include "rmtpdevicedpsingletons.h"

// Class constants.

__FLOG_STMT(_LIT8(KComponent,"DeviceDpSingletons");)

/**

Constructor.

*/

RMTPDeviceDpSingletons::RMTPDeviceDpSingletons() :

    iSingletons(NULL)

    {

    }

/**

Opens the singletons reference.

*/

void RMTPDeviceDpSingletons::OpenL(MMTPDataProviderFramework& aFramework)

    {

    __FLOG_OPEN(KMTPSubsystem, KComponent);

    __FLOG(_L8("OpenL - Entry"));

    iSingletons = &CSingletons::OpenL(aFramework);

    __FLOG(_L8("OpenL - Exit"));

    }

/**

Closes the singletons reference.

*/

void RMTPDeviceDpSingletons::Close()

    {

    __FLOG(_L8("Close - Entry"));

    if (iSingletons)

        {

        iSingletons->Close();

        iSingletons = NULL;

        }

    __FLOG(_L8("Close - Exit"));

    __FLOG_CLOSE;

    }

/**

Provides a handle to the MTP device data provider's device information data 

store singleton.

@return The device information data store singleton.

*/

CMTPDeviceDataStore& RMTPDeviceDpSingletons::DeviceDataStore()

    {

    __FLOG(_L8("DeviceDataStore - Entry"));

    __ASSERT_DEBUG(iSingletons, User::Invariant());

    __ASSERT_DEBUG(iSingletons->iDeviceDataStore, User::Invariant());

    __FLOG(_L8("DeviceDataStore - Exit"));

    return *iSingletons->iDeviceDataStore;

    }

/**

Provides a handle to the MTP device data provider's config manager singleton.

@return The device config manager singleton.

*/

CMTPDeviceDpConfigMgr& RMTPDeviceDpSingletons::ConfigMgr()

	{

    __FLOG(_L8("ConfigMgr - Entry"));

    __ASSERT_DEBUG(iSingletons, User::Invariant());

    __ASSERT_DEBUG(iSingletons->iConfigMgr, User::Invariant());

    __FLOG(_L8("ConfigMgr - Exit"));

    return *iSingletons->iConfigMgr;

	}

RMTPDeviceDpSingletons::CSingletons* RMTPDeviceDpSingletons::CSingletons::NewL(MMTPDataProviderFramework& aFramework)

    {

    CSingletons* self(new(ELeave) CSingletons());

    CleanupStack::PushL(self);

    self->ConstructL(aFramework);

    CleanupStack::Pop(self);

    return self;

    }

RMTPDeviceDpSingletons::CSingletons& RMTPDeviceDpSingletons::CSingletons::OpenL(MMTPDataProviderFramework& aFramework)

    {

    __FLOG_STATIC(KMTPSubsystem, KComponent, _L8("CSingletons::OpenL - Entry"));

    CSingletons* self(reinterpret_cast<CSingletons*>(Dll::Tls()));

    if (!self)

        {

        self = CSingletons::NewL(aFramework);

        Dll::SetTls(reinterpret_cast<TAny*>(self));

        }

    else

        {        

        self->Inc();

        }

    __FLOG_STATIC(KMTPSubsystem, KComponent, _L8("CSingletons::OpenL - Exit"));

    return *self;

    }

void RMTPDeviceDpSingletons::CSingletons::Close()

    {

    CSingletons* self(reinterpret_cast<CSingletons*>(Dll::Tls()));

    if (self)

        {

        __FLOG(_L8("CSingletons::Close - Entry"));

        self->Dec();

        if (self->AccessCount() == 0)

            {

            __FLOG(_L8("CSingletons::Close - Exit"));

            delete self;

            Dll::SetTls(NULL);

            }

        else

            {

            __FLOG(_L8("CSingletons::Close - Exit"));

            }

        }

    }

RMTPDeviceDpSingletons::CSingletons::~CSingletons()

    {

    __FLOG(_L8("CSingletons::~CSingletons - Entry"));

    delete iConfigMgr;

    delete iDeviceDataStore;

    __FLOG(_L8("CSingletons::~CSingletons - Exit"));

    __FLOG_CLOSE;

    }

void RMTPDeviceDpSingletons::CSingletons::ConstructL(MMTPDataProviderFramework& aFramework)

    {

    __FLOG_OPEN(KMTPSubsystem, KComponent);

    __FLOG(_L8("CSingletons::ConstructL - Entry"));

    iDeviceDataStore = CMTPDeviceDataStore::NewL();

    iConfigMgr = CMTPDeviceDpConfigMgr::NewL(aFramework);

    __FLOG(_L8("CSingletons::ConstructL - Exit"));

    }