/*

* Copyright (c) 2004-2006 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:  Negotiating state

*

*/

// INCLUDE FILES

#include    "CVtEngStateNegotiating.h"

#include    <cvtlogger.h>

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

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

// CVtEngStateNegotiating::CVtEngStateNegotiating

// C++ constructor can NOT contain any code, that

// might leave.

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

//

CVtEngStateNegotiating::CVtEngStateNegotiating( 

    CVtEngStateManager& aStateManager,

    CVtEngEventManager& aEventManager )

    : CVtEngStateBase( aStateManager, aEventManager )

    {

    }

// Destructor

CVtEngStateNegotiating::~CVtEngStateNegotiating()

    {

    __VTPRINT( DEBUG_DESTRUCT, "~Stateneg")

    }

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

// CVtEngStateNegotiating::UpdateL

// Updates state

// (other items were commented in a header).

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

//

void CVtEngStateNegotiating::UpdateL()

    {

    __VTPRINTENTER( "StateNegotiate.Update" )

    const MVtCtlCallControl::TVtCtlState bearerstate = 

        SessionHandler().RealState();

    const MVtProtocolCommand::TVtProtocolState state( MediaHandler().ProtoState() );

    CVtEngStateBase* newState = NULL;

    if ( bearerstate != MVtCtlCallControl::EConnected ||

         state == MVtProtocolCommand::ESetup ) // <- connect failed

        {

        newState = NewStateL( MVtEngSessionInfo::EClearing );

        }

    else if ( state == MVtProtocolCommand::EConnected )

        {

        // change to open state

        newState = NewStateL( MVtEngSessionInfo::EOpen );

        }

    else if ( state == MVtProtocolCommand::ESetup )

        {

        // should not usually happen unless connect fails

        newState = NewStateL( MVtEngSessionInfo::EConnected );

        }

    if ( newState )

        {

        newState->OpenL( this );

        }

    __VTPRINTEXIT( "StateNegotiate.Update" )

    }

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

// CVtEngStateNegotiating::OpenL

// State transition to negotiating.

// (other items were commented in a header).

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

//

void CVtEngStateNegotiating::DoOpenL( )

    {

    __VTPRINTENTER( "StateNegotiate.Open" )

    NotifyStateChange( MVtEngSessionInfo::ENegotiating);

    __VTPRINTEXIT( "StateNegotiate.Open" )

    }

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

// CVtEngStateNegotiating::ValidateCommand

// Returns if a command is valid in negotiating state.

// 

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

//

TBool CVtEngStateNegotiating::ValidateCommand(

    const TVtEngCommandId aCommandId )

    {

    __VTPRINT( DEBUG_DETAIL | DEBUG_GEN, "StateNegotiate.Validate")

    TBool okToPerform( EFalse );

    switch ( aCommandId )

        {

        case KVtEngPrepareViewFinder:        

        case KVtEngPrepareRemoteRenderDSA:

        case KVtEngPrepareRemoteRenderDP:

        case KVtEngPrepareRemoteRender:

        case KVtEngPrepareRemoteRenderNGA:

        case KVtEngStartRenderRemote: // cached to settings

        case KVtEngSetSource:

        case KVtEngPrepareCamera:

        case KVtEngSetZoomStep:

        case KVtEngStartViewFinder:

        case KVtEngStopViewFinder:

        case KVtEngTerminateSession:

            okToPerform = ETrue;

            break;

        default:

            okToPerform = CVtEngStateBase::ValidateCommand( aCommandId );

            break;

        }

    return okToPerform;

    }

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

// CVtEngStateNegotiating::State

// Returns session state.

// 

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

//

MVtEngSessionInfo::TSessionState CVtEngStateNegotiating::State() const

    {

    return MVtEngSessionInfo::ENegotiating;

    }

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

// CVtEngStateNegotiating::HandleL

// Handles an operation when behavior is state dependent.

// 

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

//

TBool CVtEngStateNegotiating::HandleL( CVtEngOperation& aOp )

    {

    __VTPRINTENTER( "StateNegotiate.HandleL" )

    TBool handled( CVtEngStateBase::HandleL( aOp ) );

    if ( !handled )

        {

        switch ( aOp.Command() )

            {

            case KVtEngStartRenderRemote:

                SetVideoEnabled( ETrue );

                handled = ETrue;

                break;

            case KVtEngTerminateSession:

                TerminateSessionL( aOp );

                break;

            }

        }

    __VTPRINTEXITR( "StateNegotiate.HandleL %d", handled )

    return handled;

    }

// End of File