/*
* Copyright (c) 2006 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: Event manager
*
*/
#ifndef CVTENGEVENTMANAGER_H
#define CVTENGEVENTMANAGER_H
// INCLUDES
#include <e32base.h>
#include "VtEngEvents.h"
// FORWARD DECLARATIONS
class MVtEngEventObserver;
// CLASS DECLARATION
/**
* This class is responsible for notifying client
* on engine events.
*
* @lib videoteleng
* @since 2.6
*/
NONSHARABLE_CLASS( CVtEngEventManager ) : public CActive
{
public: // Constructors and destructor
/**
* Two-phased constructor.
*/
static CVtEngEventManager* NewL(
MVtEngEventObserver& aEventObserver );
/**
* Destructor.
*/
virtual ~CVtEngEventManager();
public: // New functions
/**
* Notifies client on session state change.
*/
void SessionStateChanged();
/**
* Notifies event to observer.
* @param aEvent event
*/
static void NotifyEvent( const TInt aEvent );
void AddObserverL( MVtEngEventObserver* aObserver );
void RemoveObserver( const MVtEngEventObserver* aObserver );
private: // from CActive
void RunL();
void DoCancel();
private:
/**
* Notifies event to observer
*/
void DoNotifyEvent( const TInt aEvent );
TBool QueueAsyncEvent( const TInt aEvent );
/**
* Queue event and signal AO.
* @param aEvent Asynchronous event to be signalled.
*/
void QueueAndSignal( const TInt aEvent );
/**
* Signals AO.
*/
void Signal();
private:
/**
* C++ default constructor.
*/
CVtEngEventManager();
// 2nd phase constructor
void ConstructL( MVtEngEventObserver& aEventObserver );
private: // Data
RPointerArray<MVtEngEventObserver> iObservers;
// Asynchronous events are stored in this array and
// executed in order
CArrayFixFlat< TInt >* iEventQueue;
};
#endif // CVTENGEVENTMANAGER_H
// End of File