/*

* Copyright (c) 2004 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:  Connection mode handler implementation.

*

*/

#ifndef __CCNUICONNMODEHANDLER_H

#define __CCNUICONNMODEHANDLER_H

//  INCLUDES

#include <E32Base.h>

#include <impspresenceconnectionuiconstsng.h>

#include "CCnUiGroupChannel.h"

#include "MCnUiConnModeHandler.h"

//FORWARD DECLARATION

class MCnUiConnModeObserver;

// CLASS DECLARATION

/**

 * Connection mode handler implementation.

 *

 * @since 2.1

 */

NONSHARABLE_CLASS( CCnUiConnModeHandler ) : public CBase,

        public MCnUiGroupChannelListener,

        public MCnUiConnModeHandler

    {

public:  // Two-phased constructors and destructor

    /**

     * Two-phased constructor.

     */

    static CCnUiConnModeHandler* NewL();

    /**

     * Destructor.

     */

    virtual ~CCnUiConnModeHandler();

private:

    /**

     * C++ constructor.

     */

    CCnUiConnModeHandler();

    /**

     * Symbian OS constructor.

     */

    void ConstructL();

public: // New functions from MCnUiConnModeHandler

    /**

     * From MCnUiConnModeHandler.

     * See it for details.

     *

     * @since 2.1

     */

    void SendUserSelectionL( TIMPSUserConnectionSelection aUserSelection,

                             TIMPSConnectionClient aClient );

    /**

     * From MCnUiConnModeHandler.

     * See it for details.

     *

     * @since 2.1

     */

    TInt RegisterAsSignificantSchedulingClientL( TIMPSConnectionClient aClient );

    /**

     * From MCnUiConnModeHandler.

     * See it for details.

     *

     * @since 2.1

     */

    void CancelRegisteringAsSSClient();

    /**

     * From MCnUiConnModeHandler.

     * See it for details.

     *

     * @since 2.1

     */

    TIMPSConnectionModeEvent ConnectionModeL( TIMPSConnectionClient aClient,

                                              TIMPSConnectionModeEvent aModeEventCateqory );

    /**

     * From MCnUiConnModeHandler.

     * See it for details.

     *

     * @since 2.1

     */

    void NotifyConnectionModeChangesL( MCnUiConnModeObserver* aObserver,

                                       TIMPSConnectionClient aClientToNotify );

    /**

     * From MCnUiConnModeHandler.

     * See it for details.

     *

     * @since 2.1

     */

    void CancelConnectionModeNotify();

public: // from MCnUiGroupChannelListener

    /**

     * Channel listener.

     * @since 2.1

     */

    void HandleChannelMsg( TInt aGroupId,

                           TGCChannelID aChannelId,

                           TInt aChannelMsg );

private: // Private helpers

    /**

     * Helper to start the notifying.

     *

     * @param aClientToNotify The client for which to start the notify.

     */

    void DoStartNotifyL( TIMPSConnectionClient aClientToNotify );

    /**

     * Event category checkers.

     *

     * @param aEvent The event to check.

     * @return ETrue if given event value belongs to

     * category. Else EFalse.

     */

    TBool LoginLogoutModeCategoryEvent( TInt aEvent );

    TBool SSClientStartStopCategoryEvent( TInt aEvent );

private: // data

    ///<Listeners to listen channel activity, owned, lazy initialized

    CCnUiGroupChannel*            iLoginLogoutEventChannelListener;

    CCnUiGroupChannel*            iSSReqistrationChannelListener;

    ///<SS registration channel, owned

    CCnUiGroupChannel*            iSSReqistration;

    //Cached SS registration client count, owned.

    TInt                           iSSClientCountPrev;

    ///<Connection mode observer, not owned

    MCnUiConnModeObserver*        iConnModeObserver;

    ///<Observed client type, owned

    TIMPSConnectionClient         iObserverClient;

    };

#endif      //  __CCNUICONNMODEHANDLER_H

//  End of File