/*

* 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:  Implementation of storage manager

*

*/

// INCLUDE FILES

#include "cvimpststorageserviceview.h"

#include <e32std.h>

#include "cvimpststoragemanager.h"

#include "tvimpststoragepanics.h"

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

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

// CVIMPSTStorageManager::InitialiseLibraryL

// Factory method that create the singleton instance of the storage manager

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

//

void CVIMPSTStorageManager::InitialiseLibraryL()

    {

    //see whether there is an instance in the TLS

    //if not create the instance and set the same in TLS

    CVIMPSTStorageManager *sm = static_cast<CVIMPSTStorageManager*>( Dll::Tls() );

    if ( ! sm )

        {

        // no existing instance, create a new one

        CVIMPSTStorageManager *manager = CVIMPSTStorageManager::NewL();

        sm = manager;

        CleanupStack::PushL( manager );

        User::LeaveIfError( Dll::SetTls( static_cast<TAny*>( sm ) ) );

        CleanupStack::Pop( manager );

        }

    }

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

// CVIMPSTStorageManager::Release

// Factory method to release the singleton instance of the storage manager

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

//

TInt CVIMPSTStorageManager::Release()

    {

    //if any instance in TLS get the same and delete it    

    CVIMPSTStorageManager *storage = static_cast<CVIMPSTStorageManager*>( Dll::Tls() );

    if ( storage )

        {

        delete storage;

        Dll::SetTls( NULL );

        }

    return KErrNone;

    }

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

// CVIMPSTStorageManager::Instance()

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

//

CVIMPSTStorageManager& CVIMPSTStorageManager::Instance()

    {

    //get the instance frm TLS and return the same

    CVIMPSTStorageManager *storage = static_cast<CVIMPSTStorageManager*>( Dll::Tls() );

    __ASSERT_ALWAYS( storage,

        User::Panic( KPanicCategory, KLIBNOTINITIALIZED ) );

    return *storage;

    }    

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

// CVIMPSTStorageManager::NewL

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

//

 CVIMPSTStorageManager* CVIMPSTStorageManager::NewL()

    {

    //creates the instance

    CVIMPSTStorageManager* self = new( ELeave ) CVIMPSTStorageManager;

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// CVIMPSTStorageManager::ConstructL

// Two-phased constructor.

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

//

void CVIMPSTStorageManager::ConstructL()

	{

    }

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

// CVIMPSTStorageManager::~CVIMPSTStorageManager

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

// 

 CVIMPSTStorageManager::~CVIMPSTStorageManager()

    {

    //release  all the existing views

	iServiceViewList.ResetAndDestroy();	

    }

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

// CVIMPSTStorageManager::CreateServiceViewL

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

//

CVIMPSTStorageServiceView* CVIMPSTStorageManager::CreateServiceViewL( TUint32 aServiceId,

											const TDesC& aStoreName,

											const TDesC& aServiceName )

	{

	//creates a new view based on the service id.

	TInt index = KErrNotFound;

	CVIMPSTStorageServiceView* serviceView = NULL;

	//check if the view already exists in the viewlist

	index = FindServiceView(aServiceId);

	if( KErrNotFound == index )

		{

		// service view is not found 

		// check if store name is valid create a service view for aServiceId

		if( aStoreName.Length() )

			{

			serviceView = CVIMPSTStorageServiceView::NewL(aServiceId,

	    										aStoreName, aServiceName);	

			iServiceViewList.Append(serviceView); 

			}

		// if store name is not valid ,return NULL

		}

    else

	    {

	    serviceView = iServiceViewList[ FindServiceView(aServiceId)];

	    }

    //return the extisting view from the viewlist

	return serviceView;

	}

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

// CVIMPSTStorageManager::FindServiceView

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

//

TInt CVIMPSTStorageManager::FindServiceView( TUint32 aServiceId)

	{

	//search whether the view exists in the view list.

	TInt index = KErrNotFound;

    TInt count = iServiceViewList.Count();

    for(TInt i = 0; i < count; i++ )

	    {

    	if( aServiceId == iServiceViewList[ i ]->GetServiceId() )

			{

			index = i;

			break;

			}

		}

	return index;

	}

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

// CVIMPSTStorageManager::RemoveServiceView

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

//

void  CVIMPSTStorageManager::RemoveServiceView( TUint32 aServiceId)

	{

	//searches and removes the view from the view list.

    TInt index = FindServiceView(aServiceId);

	if( index >= 0 )

		{

		//view exists, so delete and remove the same

		CVIMPSTStorageServiceView* serviceView = iServiceViewList[ index ];

		iServiceViewList.Remove( index ); 

		delete serviceView;

		iServiceViewList.Compress();     

		}

	}

//  End of File