/*
* Copyright (c) 2005 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: Listener for Publish and subscribe data.
*
*/
#ifndef GSPUBSUBSLISTENER_H
#define GSPUBSUBSLISTENER_H
// INCLUDES
#include <e32base.h>
#include <e32std.h>
#include <e32property.h>
// FORWARD DECLARATIONS
class MGSSettingPSObserver;
// CLASS DECLARATION
/**
* RProperty poller.
*
* @lib gs.lib
* @since Series 60 3.0
*/
NONSHARABLE_CLASS( CGSPubSubsListener ) : public CActive
{
public: // Constructors and destructor
/**
* Two-phased constructor.
* @param aUid the Uid to use
* @param aKey item's key
* @param aObserver callback interface for notification
* @return instance of CGSPubSubsListener
*/
static CGSPubSubsListener* NewL( const TUid aUid, const TInt aKey,
MGSSettingPSObserver* aObserver );
/**
* Destructor.
*/
virtual ~CGSPubSubsListener();
public: // New functions.
/**
* Gets integer value from P & S.
* @param aVal a value in return
* @return error code
*/
TInt Get( TInt& aVal );
/**
* Gets 8 bit string value from P&S.
* @param aVal a value in return
* @return error code
*/
TInt Get( TDes8& aVal );
/**
* Gets 16 bit descriptor value from P&S.
* @param aVal a value in return
* @return error code
*/
TInt Get( TDes16& aVal );
private: // From CActive.
/** @see CActive::RunL */
virtual void RunL();
/** @see CActive::Cancel */
virtual void DoCancel();
/** @see CActive::RunError */
virtual TInt RunError( TInt aError );
/**
* Starts the listening (RunL).
*/
void StartListening();
private:
/**
* C++ default constructor.
* @param aUid the Uid to use
* @param aKey item's key
* @param aObserver callback interface for notification
*/
CGSPubSubsListener( const TUid aUid, TInt aKey,
MGSSettingPSObserver* aObserver );
/**
* By default Symbian 2nd phase constructor is private.
*/
void ConstructL();
private: // Data
// UID of the monitored item.
TUid iUid;
// ID of the monitored item.
TInt iId;
// Property to subscribe to.
RProperty iProperty;
// The notification interface.
MGSSettingPSObserver* iCallback;
};
#endif // GSPUBSUBSLISTENER_H
// End of File