/*

* Copyright (c) 2002-2008 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:   Header definition of plugin class implementing devsound server

*                side custom interface extension.

*

*/

#ifndef CIEXTNSERVERPLUGIN_H

#define CIEXTNSERVERPLUGIN_H

// Include files

#include <e32base.h>

#include <a3f/mmfdevsoundcustominterfaceextensions.h>

// Forward declarations

class MCustomInterface;

class MCIMsgHndlrIntfc;

/**

 *  Plugin class implementing DevSound CI server Extension

 *

 *  An instance of this class is created when DevSound Session is created. When

 *  DevSound session object receives a RMmfIpcMessage that cannot be handled, the

 *  message is forwarded to this plugin.

 *

 *  Only one instance of this plugin can exist in the system.

 *

 *  This class is intended to be used only by DevSound Session implementation.

 *

 *  @since S60 v3.2

 *

 */

class CCIExtnServerPlugin : public CBase,

                            public MDevSoundCIServerExtension

    {

public:

    /**

     * Two-phased constructor.

     * Called by ECom framework.

     */

    static MDevSoundCIServerExtension* NewL();

    /**

    * Destructor.

    */

    ~CCIExtnServerPlugin();

    // From MDevSoundCIServerExtension begins

    // Called by framework when plugin is constructed

    TInt Setup( MCustomInterface& aInterface );

    // Called by framework passing aMessage to handle

    TInt HandleMessageL(const RMmfIpcMessage& aMessage);

    // Called by framework when plugin is to be deleted

    void Release();

    // Called by framework after plugin is created

    void PassDestructorKey( TUid aDestructorKey );

    // From MDevSoundCIClientExtension ends

private:

    /**

     * Constructor.

     */

    CCIExtnServerPlugin();

    /**

     * Second phase constructor.

     */

    void ConstructL();

    /**

     * Initializes factory plugins list.

     *

     * Leaves on error.

     */

    void InitializeMsgHndlrPluginsL();

private:

    /**

     * Reference to MCustomInterface interface

     * Not own.

     */

    MCustomInterface*               iMCustomInterface;

    /**

     * Uid of the plugin object passed by the framework via PassDestructorKey()

     */

    TUid                            iDestructorKey;

    /**

     * List of message handler plugins. When framework calls

     * HandleMessageL() function, the request will be forwarded to each

     * message handler plugin in this list until it is handled.

     *

     * Own.

     */

    RPointerArray<MCIMsgHndlrIntfc>  iMCIMsgHndlrIntfcList;

    };

#endif // CIEXTNSERVERPLUGIN_H