/*

* Copyright (c) 2005 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: 

*     GSM-specific single call state implementation.

*

*/

#ifndef CPHONESINGLECALL_H

#define CPHONESINGLECALL_H

// INCLUDES

#include "cphonegsmincall.h"

#include "tphonecmdparamboolean.h"

// FORWARD DECLARATIONS

// CLASS DECLARATION

/**

*  GSM-specific single call state

*/

class CPhoneSingleCall : public CPhoneGsmInCall

    {

    public:  

        /**

        * Destructor.

        */

        IMPORT_C virtual ~CPhoneSingleCall();

        /**

        * Creates the GSM-specific Single call state class

        * @param aStateMachine: a state machine

        * @param aViewCommandHandle: handle to the PhoneUIView

        * @return an instance of class CPhoneSingleCall

        */

        static CPhoneSingleCall* NewL( 

            MPhoneStateMachine* aStateMachine, 

            MPhoneViewCommandHandle* aViewCommandHandle,

            MPhoneCustomization* aPhoneCustomization );

        IMPORT_C virtual void HandleKeyMessageL(

            TPhoneKeyEventMessages aMessage,

            TKeyCode aCode );

        /**

        * A message handling function for Phone Engine messages

        * @param aMessage Message from Phone Engine

        * @param aCallId Call id the message concerns

        */

        IMPORT_C virtual void HandlePhoneEngineMessageL(

            const TInt aMessage, 

            TInt aCallId );       

        IMPORT_C virtual TBool HandleCommandL( TInt aCommand );

    protected:

        /**

        * By default EPOC constructor is private.

        */

        IMPORT_C CPhoneSingleCall( 

            MPhoneStateMachine* aStateMachine, 

            MPhoneViewCommandHandle* aViewCommandHandle,

            MPhoneCustomization* aPhoneCustomization );

        /**

        * ConstructL()

        */

        IMPORT_C virtual void ConstructL();

        /**

        * Returns call identifier of the call this state is associated with.

        * @return   Call identifier.

        */

        IMPORT_C TInt CallId() const;

    private:

        void HandleHeldL( TInt aCallId );

        void HandleConnectedL( TInt aCallId );

        void ToggleHoldL();

        void HandleIncomingL( TInt aCallId );

        void DisplayIncomingCallL( 

            TInt aCallId, 

            const TPhoneCmdParamBoolean aCommandParam );

        void SwitchToVideoL();

        void SwitchToVoiceL();

    private:

        // Call id information.

        TInt iCallId;

        // Status of query

        TBool iSwitchToVideoQuery;

    };

#endif // CPHONESINGLECALL_H