// Copyright (c) 2007-2010 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:

// Send-receive class abstracts the media used by subscribers to send / receive messages

//

#ifndef __TRACECORESENDRECEIVE_H__

#define __TRACECORESENDRECEIVE_H__

// Include files

#include <kernel/kernel.h>

#include "TraceCoreMediaIfCallback.h"

#include "TraceCoreMessageSender.h"

// Forward declarations

class DTraceCoreMediaIf;

class DTraceCorePluginIf;

class MTraceCoreMessageReceiver;

/**

 * Send-receive class abstracts the media used by subscribers to send / receive messages

 */

NONSHARABLE_CLASS( DTraceCoreSendReceive ) : public DBase, public MTraceCoreMediaIfCallback, public MTraceCoreMessageSender

    {

public:

    /**

     * Constructor

     */

    DTraceCoreSendReceive();

    /**

     * Destructor

     */

    ~DTraceCoreSendReceive();

    /**

     * Initializes this sender / receiver

     * 

     * @param aReceiver Interface where incoming messages are routed

     */

    TInt Init( MTraceCoreMessageReceiver& aReceiver );

    /**

     * Gets the media interface that is used by media writer

     */

    inline DTraceCoreMediaIf* GetMediaWriterIf();

    /**

     * Gets the media plug-in interface or NULL if it does not exist

     */

    inline DTraceCorePluginIf* GetPluginIf();

private:

    /**

     * MTraceCoreMediaIfCallback implementation for incoming messages

     * 

     * @param aMsg The message that was received

     * @return KErrNotFound if the message id was not found (not subscribed), KErrNone if found

     */

    TInt MessageReceived( TTraceMessage &aMsg );

    /**

     * Set Sender Media

     *

     * @param Sender media

     */

    TInt SetSenderMedia( DTraceCoreMediaIf* aSenderMedia );

    /**

     * MTraceCoreMessageSender implementation for outgoing messages

     * 

     * @param aMessage The message to be sent

     */

    TInt SendMessage( TTraceMessage &aMessage );

    /**

     * Initializes a media interface

     */

    TInt InitMediaInterface( DTraceCoreMediaIf* aMediaIf );

    /**

     * Creates the media interfaces

     */

    TInt CreateInterfaces();

    /**

     * Deletes the media interfaces

     */

    void DeleteInterfaces();

private:

    /**

     * Media interfaces that receive data.

     */

    RPointerArray< DTraceCoreMediaIf > iMediaInterfaces;

    /**

     * Plug-in interface

     */

    DTraceCorePluginIf* iPluginInterface;

    /**

     * Media interface for sending data

     */

    DTraceCoreMediaIf* iSendInterface;

    /**

     * Media interface used by the media writer

     */

    DTraceCoreMediaIf* iMediaWriterInterface;

    /**

     * Target for incoming messages

     */

    MTraceCoreMessageReceiver* iReceiver;

    };

#endif

#include "TraceCoreSendReceive.inl"

// End of File