/*

* Copyright (c) 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:  AT command URC handler

*

*/

#include <atext.h>

#include "DunAtCmdHandler.h"

#include "DunAtUrcHandler.h"

#include "DunDownstream.h"

#include "DunDebug.h"

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

// Two-phased constructor.

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

//

CDunAtUrcHandler* CDunAtUrcHandler::NewL(

    RATExt* aAtCmdExt,

    MDunStreamManipulator* aStreamCallback )

    {

    CDunAtUrcHandler* self = NewLC( aAtCmdExt, aStreamCallback );

    CleanupStack::Pop( self );

    return self;

    }

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

// Two-phased constructor.

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

//

CDunAtUrcHandler* CDunAtUrcHandler::NewLC(

    RATExt* aAtCmdExt,

    MDunStreamManipulator* aStreamCallback )

    {

    CDunAtUrcHandler* self = new (ELeave) CDunAtUrcHandler( aAtCmdExt,

                                                            aStreamCallback );

    CleanupStack::PushL( self );

    self->ConstructL();

    return self;

    }

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

// Destructor.

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

//

CDunAtUrcHandler::~CDunAtUrcHandler()

    {

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

    ResetData();

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

    }

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

// Resets data to initial values

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

//

void CDunAtUrcHandler::ResetData()

    {

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

    // APIs affecting this:

    // IssueRequest()

    Stop();

    // Don't close iAtCmdExt here (it is done in CDunAtCmdHandler)!

    // Internal

    Initialize();

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

    }

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

// Starts waiting for an incoming URC message

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

//

TInt CDunAtUrcHandler::IssueRequest()

    {

    FTRACE(FPrint( _L("CDunAtUrcHandler::IssueRequest()") ));

    if ( iUrcHandleState != EDunStateIdle )

        {

        FTRACE(FPrint( _L("CDunAtUrcHandler::IssueRequest() (not ready) complete") ));

        return KErrNotReady;

        }

    iStatus = KRequestPending;

    iAtCmdExt->ReceiveUnsolicitedResult( iStatus, iRecvBuffer, iOwnerUidPckg );

    SetActive();

    // Next mark ownership

    if ( !iStarted )

        {

        TInt retTemp = iAtCmdExt->MarkUrcHandlingOwnership( iOwnerUid );

        if ( retTemp != KErrNone )

            {

            FTRACE(FPrint( _L("CDunAtUrcHandler::IssueRequest() (not owned) complete") ));

            return KErrGeneral;

            }

        }

    iStarted = ETrue;

    FTRACE(FPrint( _L("CDunAtUrcHandler::IssueRequest() complete") ));

    return KErrNone;

    }

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

// Stops waiting for an incoming URC message

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

//

TInt CDunAtUrcHandler::Stop()

    {

    FTRACE(FPrint( _L("CDunAtUrcHandler::Stop()") ));

    if ( iUrcHandleState != EDunStateAtUrcHandling )

        {

        FTRACE(FPrint( _L("CDunAtUrcHandler::Stop() (not ready) complete" )));

        return KErrNotReady;

        }

    iAtCmdExt->CancelReceiveUnsolicitedResult( iOwnerUid );

    Cancel();

    iUrcHandleState = EDunStateIdle;

    FTRACE(FPrint( _L("CDunAtUrcHandler::Stop() complete") ));

    // Note: Don't mark iStarted to EFalse here as it is used to get the UID

    return KErrNone;

    }

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

// UID of the owning plugin

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

//

TUid CDunAtUrcHandler::OwnerUid()

    {

    return iOwnerUid;

    }

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

// CDunAtUrcHandler::CDunAtUrcHandler

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

//

CDunAtUrcHandler::CDunAtUrcHandler( RATExt* aAtCmdExt,

                                    MDunStreamManipulator* aStreamCallback ) :

    CActive( EPriorityHigh ),

    iAtCmdExt( aAtCmdExt ),

    iStreamCallback( aStreamCallback ),

    iOwnerUidPckg( iOwnerUid )

    {

    Initialize();

    }

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

// CDunAtUrcHandler::ConstructL

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

//

void CDunAtUrcHandler::ConstructL()

    {

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

    if ( !iAtCmdExt || !iStreamCallback  )

        {

        User::Leave( KErrGeneral );

        }

    CActiveScheduler::Add( this );

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

    }

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

// Initializes this class

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

//

void CDunAtUrcHandler::Initialize()

    {

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

    iUrcHandleState = EDunStateIdle;

    iOwnerUid = TUid::Null();

    iStarted = EFalse;

    }

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

// From class CActive.

// Gets called when URC command received

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

//

void CDunAtUrcHandler::RunL()

    {

    FTRACE(FPrint( _L("CDunAtUrcHandler::RunL()") ));

    iUrcHandleState = EDunStateIdle;

    TInt retTemp = iStatus.Int();

    if ( retTemp != KErrNone )

        {

        FTRACE(FPrint( _L("CDunAtUrcHandler::RunL() (ERROR) complete (%d)"), retTemp));

        return;

        }

    if ( iRecvBuffer.Length() == 0 )

        {

        FTRACE(FPrint( _L("CDunAtUrcHandler::RunL() (empty buffer) complete") ));

        return;

        }

    // Send received URC message

    iStreamCallback->NotifyDataPushRequest( &iRecvBuffer, this );

    FTRACE(FPrint( _L("CDunAtUrcHandler::RunL() complete") ));

    }

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

// From class CActive.

// Gets called on cancel

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

//

void CDunAtUrcHandler::DoCancel()

    {

    }

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

// From class MDunCompletionReporter.

// Gets called when data push is complete

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

//

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

    {

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

    IssueRequest();

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

    }