/*

* 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:  Accessory observer implementation for fmtx watcher plugin.

*

*/

#ifndef HWRMFMTXACCOBSERVER_H

#define HWRMFMTXACCOBSERVER_H

//  INCLUDES

#include <e32base.h>

#include <e32property.h>

#include "hwrmfmtxconnobserver.h"

// CLASS DECLARATIONS

/**

* Active object for obtaining notification of changes in Accessory connections.

*

* @since S60 3.2

* @lib fmtxwatcherplugin.lib

*/

NONSHARABLE_CLASS(CHWRMFmtxAccObserver) : public CActive, public MHWRMFmtxConnObserver

	{

public: // From MFmtxConnObserver

    /**

    * This is a two-phase constructor method that is used to create a new

    * instance for listening to the changes in Accessory connections.

    *

    * @param aObserver A reference to an observer instance.

    * @return A pointer to a new instance of the CAccObserver class.

    *

    * @leave One of the Symbian OS error codes.

    */

    static CHWRMFmtxAccObserver* NewL( MHWRMFmtxConnObserverCallback& aObserver );

    /**

    * Destructor.

    */

    ~CHWRMFmtxAccObserver();

    // form MHWRMFmtxConnObserver

    TBool GetStatusL();

    void StartObservingL();

    void StopObserving();

private:

    /**

    * C++ default constructor.

    *

    * @param aObserver A reference to an observer instance.

    */

    CHWRMFmtxAccObserver( MHWRMFmtxConnObserverCallback& aObserver );

    /**

    * By default Symbian OS constructor is private.

    */

    void ConstructL();

    /**

    * Orders notification for wired accessory connection status change.

    */

    void OrderAccessoryNotification();

protected:

    // from CActive

    void RunL();

    void DoCancel();

private:

    /**

    * Publish&Subscribe key session.     

    */

    RProperty iProperty;

    /**

    * Response callback pointer.

    */    

    MHWRMFmtxConnObserverCallback& iCallback;

    /**

    * Connection status.

    * Used for filtering out audio routing change notifications.

    */ 

    TBool iConnected;

	};

#endif // HWRMFMTXACCOBSERVER_H

// End of File