/*

* Copyright (c) 2005-2008 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: 

*     Conference call state implementation.

*

*/

#ifndef CPHONECONFERENCE_H

#define CPHONECONFERENCE_H

// INCLUDES

#include "cphonegsmincall.h"

#include "tphonecmdparamboolean.h"

// FORWARD DECLARATIONS

// CLASS DECLARATION

/**

*  Conference call state implementation.

*/

class CPhoneConference : public CPhoneGsmInCall

    {

    public:  

        /**

        * Destructor.

        */

        virtual ~CPhoneConference();

        /**

        * Creates the Conference Call state class

        * @param aStateMachine: a container of state objects

        * @param aViewCommandHandle: handle to the PhoneUIView

        * @return an instance of class CPhoneStateIncoming

        */

        static CPhoneConference* NewL( 

            MPhoneStateMachine* aStateMachine, 

            MPhoneViewCommandHandle* aViewCommandHandle,

            MPhoneCustomization* aPhoneCustomization );

        /**

        * A message handling function for Phone Engine messages

        * @param aMessage Message from Phone Engine

        * @param aCallId Call id the message concerns

        */

        virtual void HandlePhoneEngineMessageL(

            const TInt aMessage, 

            TInt aCallId );     

        virtual TBool HandleCommandL( TInt aCommand );  

        virtual void HandleKeyMessageL(

            TPhoneKeyEventMessages aMessage,

            TKeyCode aCode );

    protected:

        /**

        * By default EPOC constructor is private.

        */

        CPhoneConference( 

            MPhoneStateMachine* aStateMachine, 

            MPhoneViewCommandHandle* aViewCommandHandle,

            MPhoneCustomization* aPhoneCustomization );

        /**

        * ConstructL()

        */

        virtual void ConstructL();

        virtual void HandleKeyEventL( 

            const TKeyEvent& aKeyEvent, 

            TEventCode aEventCode );

        virtual void HandleNumberEntryClearedL();

        virtual void HandleIdleL( TInt aCallId );

        virtual void MakeStateTransitionToSingleL();

        virtual void HandleIncomingL( TInt aCallId );

        virtual void HandleConferenceIdleL();

        virtual void MakeStateTransitionToTwoSinglesL();

        void UpdateConferenceSecurityStatusL( TInt aCallId );

     private:

        void HandleHeldConferenceL( TInt aCallId );

        void HandleConnectedConferenceL();

        void ToggleHoldL();

        void DropSelectedParticipantL();

        void PrivateSelectedParticipantL();

        void MakeStateTransitionToIdleL();

        void HandleWentOneToOneL( TInt aCallId );

    };

#endif // CPHONECONFERENCE_H

// End of File