/*

* Copyright (c) 2006-2007 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:  Monitors for new data in RComm local media side

*

*/

#include "DunTransporter.h"

#include "DunDataWaiter.h"

#include "DunSignalCopy.h"

#include "DunDebug.h"

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

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

// Two-phased constructor.

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

//

CDunDataWaiter* CDunDataWaiter::NewL( MDunChannelAllocator* aChannelCallback )

    {

    CDunDataWaiter* self = new (ELeave) CDunDataWaiter( aChannelCallback );

    CleanupStack::PushL( self );

    self->ConstructL();

    CleanupStack::Pop( self );

    return self;

    }

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

// Destructor.

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

//

CDunDataWaiter::~CDunDataWaiter()

    {

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

    ResetData();

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

    }

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

// Resets data to initial values

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

//

void CDunDataWaiter::ResetData()

    {

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

    Stop();

    // APIs affecting this:

    // AddConnMonCallbackL()

    iCallbacks.Close();

    // Internal

    Initialize();

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

    }

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

// Adds callback for RunL error controlling

// The callback will be called when error is detected in asynchronous

// operation

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

//

TInt CDunDataWaiter::AddCallback( MDunConnMon* aCallback )

    {

    FTRACE(FPrint( _L("CDunDataWaiter::AddCallback()" ) ));

    if ( !aCallback )

        {

        FTRACE(FPrint( _L("CDunDataWaiter::AddCallback() (ERROR) complete" ) ));

        return KErrGeneral;

        }

    TInt retTemp = iCallbacks.Find( aCallback );

    if ( retTemp != KErrNotFound )

        {

        FTRACE(FPrint( _L("CDunDataWaiter::AddCallback() (already exists) complete" ) ));

        return KErrAlreadyExists;

        }

    retTemp = iCallbacks.Append( aCallback );

    if ( retTemp != KErrNone )

        {

        FTRACE(FPrint( _L("CDunDataWaiter::AddCallback() (append failed!) complete" ) ));

        return retTemp;

        }

    FTRACE(FPrint( _L("CDunDataWaiter::AddCallback() complete" ) ));

    return KErrNone;

    }

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

// Sets media to use for this endpoint

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

//

TInt CDunDataWaiter::SetMedia( RComm* aComm )

    {

    FTRACE(FPrint( _L("CDunDataWaiter::SetMedia(RComm) (addr=0x%08X)" ), aComm));

    if ( !aComm )

        {

        FTRACE(FPrint( _L("CDunDataWaiter::SetMedia() (aComm) not initialized!" )));

        return KErrGeneral;

        }

    TCommCaps2 caps;

    aComm->Caps( caps );

    if ( !(caps().iNotificationCaps & KNotifyDataAvailableSupported) )

        {

        FTRACE(FPrint( _L("CDunDataWaiter::SetMedia() (RComm) (not supported) complete" )));

        return KErrNotSupported;

        }

    iComm = aComm;

    FTRACE(FPrint( _L("CDunDataWaiter::SetMedia() (RComm) complete" )));

    return KErrNone;

    }

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

// Issues request to start waiting for new data in RComm

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

//

TInt CDunDataWaiter::IssueRequest()

    {

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

    if ( iDataWaiterState != EDunStateIdle )

        {

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

        return KErrNotReady;

        }

    if ( !iComm )

        {

        FTRACE(FPrint( _L("CDunDataWaiter::IssueRequest() (iComm) not initialized!" ) ));

        return KErrGeneral;

        }

    iStatus = KRequestPending;

    iComm->ResetBuffers();

    iComm->NotifyDataAvailable( iStatus );

    SetActive();

    iDataWaiterState = EDunStateDataWaiting;

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

    return KErrNone;

    }

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

// Stops monitoring for new data

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

//

TInt CDunDataWaiter::Stop()

    {

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

    if ( iDataWaiterState != EDunStateDataWaiting )

        {

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

        return KErrNotReady;

        }

    if ( !iComm )

        {

        FTRACE(FPrint( _L("CDunDataWaiter::Stop() (iComm) not initialized!" )));

        return KErrGeneral;

        }

    iComm->NotifyDataAvailableCancel();

    Cancel();

    iDataWaiterState = EDunStateIdle;

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

    return KErrNone;

    }

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

// CDunDataWaiter::CDunDataWaiter

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

//

CDunDataWaiter::CDunDataWaiter( MDunChannelAllocator* aChannelCallback ) :

    CActive( EPriorityHigh ),

    iChannelCallback( aChannelCallback )

    {

    Initialize();

    }

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

// CDunDataWaiter::ConstructL

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

//

void CDunDataWaiter::ConstructL()

    {

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

    if ( !iChannelCallback )

        {

        User::Leave( KErrGeneral );

        }

    CActiveScheduler::Add( this );

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

    }

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

// Initializes this class

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

//

void CDunDataWaiter::Initialize()

    {

    FTRACE(FPrint( _L("CDunDataWaiter::Initialize()" ) ));

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

    iDataWaiterState = EDunStateIdle;

    iComm = NULL;

    FTRACE(FPrint( _L("CDunDataWaiter::Initialize() complete" ) ));

    }

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

// From class CActive.

// Gets called when new data in RComm object

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

//

void CDunDataWaiter::RunL()

    {

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

    iDataWaiterState = EDunStateIdle;

    TInt retTemp = iStatus.Int();

    if ( retTemp != KErrNone )

        {

        FTRACE(FPrint( _L("CDunDataWaiter::RunL() (failed) complete (%d)"), retTemp));

        TInt count = iCallbacks.Count();

        TDunConnectionReason connReason;

        connReason.iReasonType = EDunReasonTypeRunL;

        connReason.iContext = EDunMediaContextLocal;

        connReason.iSignalType = 0;

        connReason.iSignalHigh = EFalse;

        connReason.iDirection = EDunDirectionUndefined;

        connReason.iErrorCode = retTemp;

        for ( TInt i=0; i<count; i++ )

            {

            TRAP_IGNORE(

                iCallbacks[i]->NotifyProgressChangeL( iComm, connReason ) );

            }

        return;

        }

    if ( iChannelCallback )

        {

        iChannelCallback->NotifyNewChannelRequest( iComm );

        }

    // Don't check other iMediaInUse values here

    // They can't be other than EDunMediaRComm (checked in IssueRequest())

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

    }

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

// From class CActive.

// Gets called on cancel

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

//

void CDunDataWaiter::DoCancel()

    {

    }