/*

* Copyright (c) 2010 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:  Echoer for AT commands

*

*/

#include "DunAtCmdEchoer.h"

#include "DunDownstream.h"

#include "DunDebug.h"

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

// Two-phased constructor.

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

//

CDunAtCmdEchoer* CDunAtCmdEchoer::NewL(

    MDunStreamManipulator* aStreamCallback )

    {

    CDunAtCmdEchoer* self = new (ELeave) CDunAtCmdEchoer( aStreamCallback );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// Destructor.

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

//

CDunAtCmdEchoer::~CDunAtCmdEchoer()

    {

    FTRACE(FPrint( _L("CDunAtCmdEchoer::~CDunAtCmdEchoer()") ));

    ResetData();

    FTRACE(FPrint( _L("CDunAtCmdEchoer::~CDunAtCmdEchoer() complete") ));

    }

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

// Resets data to initial values

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

//

void CDunAtCmdEchoer::ResetData()

    {

    FTRACE(FPrint( _L("CDunAtCmdEchoer::ResetData()") ));

    // Internal

    Initialize();

    FTRACE(FPrint( _L("CDunAtCmdEchoer::ResetData() complete") ));

    }

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

// Sends a character to be echoed

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

//

TInt CDunAtCmdEchoer::SendEchoCharacter(

    const TDesC8* aInput,

    MDunAtCmdEchoer* aCallback )

    {

    FTRACE(FPrint( _L("CDunAtCmdEchoer::SendEchoCharacter()") ));

    if ( iAtEchoState!=EDunStateIdle || iCallback )

        {

        FTRACE(FPrint( _L("CDunAtCmdEchoer::SendEchoCharacter() (not ready) complete") ));

        return KErrNotReady;

        }

    iStreamCallback->NotifyDataPushRequest( aInput, this );

    iCallback = aCallback;

    iAtEchoState = EDunStateAtCmdEchoing;

    FTRACE(FPrint( _L("CDunDownstream::SendEchoCharacter() complete" ) ));

    return KErrNone;

    }

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

// CDunAtCmdEchoer::CDunAtCmdEchoer

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

//

CDunAtCmdEchoer::CDunAtCmdEchoer( MDunStreamManipulator* aStreamCallback ) :

    iStreamCallback( aStreamCallback )

    {

    Initialize();

    }

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

// CDunAtCmdEchoer::ConstructL

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

//

void CDunAtCmdEchoer::ConstructL()

    {

    FTRACE(FPrint( _L("CDunAtCmdEchoer::ConstructL()") ));

    if ( !iStreamCallback )

        {

        FTRACE(FPrint( _L("CDunAtCmdEchoer::ConstructL() complete") ));

        User::Leave( KErrGeneral );

        }

    FTRACE(FPrint( _L("CDunAtCmdEchoer::ConstructL() complete") ));

    }

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

// Initializes this class

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

//

void CDunAtCmdEchoer::Initialize()

    {

    // Don't initialize iStreamCallback here (it is set through NewL)

    iCallback = NULL;

    iAtEchoState = EDunStateIdle;

    }

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

// From MDunCompletionReporter.

// Gets called when data push is complete

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

//

void CDunAtCmdEchoer::NotifyDataPushComplete( TBool /*aAllPushed*/ )

    {

    FTRACE(FPrint( _L("CDunAtCmdEchoer::NotifyDataPushComplete()") ));

    MDunAtCmdEchoer* callback = iCallback;

    iCallback = NULL;

    iAtEchoState = EDunStateIdle;

    callback->NotifyEchoComplete();

    FTRACE(FPrint( _L("CDunAtCmdEchoer::NotifyDataPushComplete() complete") ));

    }