/*

* 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.

*

*

*/

#ifndef CLogsNaviDecoratorWrapper_H

#define CLogsNaviDecoratorWrapper_H

//  INCLUDES

#include <e32base.h>

#include <coemain.h>

#include "MLogsNaviDecoratorWrapper.h"

// FORWARD DECLARATIONS

class CAknNavigationDecorator;

class CAknNavigationControlContainer;

class MAknTabObserver;

// CLASS DECLARATION

/**

 * A singleton class to wrap Navi Pane tab group handling for 

 * Logs views.

 */

class CLogsNaviDecoratorWrapper : public CCoeStatic, 

                                  public MLogsNaviDecoratorWrapper

    {

    public: 

    /**

     * Returns the singleton CLogsNaviDecoratorWrapper instance. If no instance

	 * exists yet it is created.

     */

    static CLogsNaviDecoratorWrapper* InstanceL();

    /**

     * Returns the wrapped iNaviDecorator instance. If no instance

	 * exists yet a new one is created. If there is an instance but it is

	 * of wrong resource type, a new instance is created and the old deleted. 

	 * 

	 * Called from CLogsBaseControlContainer::NavigationTabGroupL

	 *

	 * @param aNaviPane, the calling views status pane's navigation pane control

	 * @param aTabObserver, an interface to the LogsAppUi::TabChangedL

	 * @param aResource, the resource id of the 

	 *

	 * @return CAknNavigationDecorator object for the view's tab group

     */

    CAknNavigationDecorator* GetNaviDecoratorL(CAknNavigationControlContainer* aNaviPane,

                                              MAknTabObserver* aTabObserver,

                                              TInt aResource);

    private:  

    /**

     * NewLC is called from InstanceL.

     */

    static CLogsNaviDecoratorWrapper* NewLC();

    /**

     * Constructor

     */

    CLogsNaviDecoratorWrapper(); 

    /**

     * Destructor is called from CCoeEnv::DestroyEnvironmentStatic

     */

    ~CLogsNaviDecoratorWrapper();

    private:  // Data

    // Wrapped CAknNavigationDecorator object.

    CAknNavigationDecorator* iNaviDecorator;  

    // State holder for the current resource id of the iNaviDecorator

    TInt iCurrentNaviResource;

    };

#endif //CLogsNaviDecoratorWrapper_H

// End of File