/*

* Copyright (c) 2002 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: 

*      A singleton wrapper for Logs views CAknNavigationDecorator objects (Tab groups). 

*      Each unique Tab group is only created if it doesn't already exist. This fixes 

*      error MVHA-6TJDMJ.

*

*

*/

// INCLUDE FILES

#include "CLogsNaviDecoratorWrapper.h"

#include <AknTabObserver.h>

#include <aknnavide.h>

#include <aknnavi.h>

#include <barsread.h>   // resource reader

#include "LogsUID.h"

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

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

// CLogsNaviDecoratorWrapper::CLogsNaviDecmioratorWrapper

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

//

CLogsNaviDecoratorWrapper::CLogsNaviDecoratorWrapper() : CCoeStatic( TUid::Uid( KLogsAppUID3 )), iNaviDecorator( NULL ), iCurrentNaviResource (0)

    {

    }

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

// CLogsNaviDecoratorWrapper::NewLC

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

//

CLogsNaviDecoratorWrapper* CLogsNaviDecoratorWrapper::NewLC()

    {  

    CLogsNaviDecoratorWrapper* self = new (ELeave) CLogsNaviDecoratorWrapper;

    CleanupStack::PushL(self);

    return self; 

    }

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

// CLogsNaviDecoratorWrapper::GetNaviDecorator

// 

// Getter for the iNaviDecorator member. 

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

//  

CAknNavigationDecorator* CLogsNaviDecoratorWrapper::GetNaviDecoratorL(CAknNavigationControlContainer* aNaviPane,

                                                                     MAknTabObserver* aTabObserver,

                                                                     TInt aResource)

    {   

    // If the iNaviDecorator is not yet created, or it is of wrong type

    // we need to create a new.

    if (iNaviDecorator == NULL || iCurrentNaviResource != aResource)

        {     

        TResourceReader reader;

        CCoeEnv::Static()->CreateResourceReaderLC( reader, aResource );

        if (iNaviDecorator != NULL )

            {

            // deleting the old navidecorator also Pops it from the Navi Panes's control stack

            delete iNaviDecorator;

            iNaviDecorator = NULL;

            }

        iNaviDecorator = aNaviPane->CreateTabGroupL( reader, aTabObserver );

        CleanupStack::PopAndDestroy(); // reader

        // Store the current iNaviDecorator's resource id 

        iCurrentNaviResource = aResource;

        }

    // Push the naviDecorator to the Navi Pane's control stack 

    aNaviPane->PushL( *( iNaviDecorator ) ); 

    return iNaviDecorator;

    }

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

// CLogsNaviDecoratorWrapper::GetNaviDecorator

// 

// Static Getter for the singleton instance of CLogsNaviDecoratorWrapper class. 

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

//       

CLogsNaviDecoratorWrapper* CLogsNaviDecoratorWrapper::InstanceL()

    {

    CLogsNaviDecoratorWrapper* singleton = static_cast<CLogsNaviDecoratorWrapper*>

                    ( CCoeEnv::Static( TUid::Uid(KLogsAppUID3 ) ));

    if ( !singleton )

        {

        singleton = CLogsNaviDecoratorWrapper::NewLC();

        CleanupStack::Pop(singleton);

        }

    return singleton;

    }

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

// CLogsNaviDecoratorWrapper::~CLogsNaviDecoratorWrapper

//

// CCoeEnv handles the cleanup. Destructor called from CCoeEnv::DestroyEnvironmentStatic

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

//   

CLogsNaviDecoratorWrapper::~CLogsNaviDecoratorWrapper()

    {

    delete iNaviDecorator;

    }

// End of File