/*
* 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: Subscribes properties from P&S
*
*/
#ifndef MMPROPERTYSUBSCRIBER_H
#define MMPROPERTYSUBSCRIBER_H
#include <e32base.h> // For CActive, link against: euser.lib
#include <e32property.h>
// Observer for property change. Currently integer value supported
class MMmPropertyChangeObserver
{
public:
virtual void PropertyChangedL(TInt aValue)=0;
};
/**
* Subcribes property from P&S and listen property changes
*
* @lib xn3layoutengine.lib
* @since Series 60 5.0
*/
NONSHARABLE_CLASS( CMmPropertySubscriber ) : public CActive
{
public:
// Cancel and destroy
~CMmPropertySubscriber();
/**
* Two-phased constructor.
* @param aUid P&S property category
* @param aKey P&S property key
* @param aObserver Given property change observer
*/
static CMmPropertySubscriber* NewL(
const TUid aUid,
const TUint32 aKey,
MMmPropertyChangeObserver& aObserver);
/**
* Two-phased constructor.
* @param aUid P&S property category
* @param aKey P&S property key
* @param aObserver Given property change observer
*/
static CMmPropertySubscriber* NewLC(
const TUid aUid,
const TUint32 aKey,
MMmPropertyChangeObserver& aObserver);
private:
// C++ constructor
CMmPropertySubscriber(MMmPropertyChangeObserver& aObserver);
// Second-phase constructor
void ConstructL(const TUid aUid,const TUint32 aKey);
private: // From CActive
// Handle completion
void RunL();
// How to cancel me
void DoCancel();
private:
//Observer for property changes
MMmPropertyChangeObserver& iPropertyChangeObserver;
// Property to listen
RProperty iProperty;
};
#endif // MMPROPERTYSUBSCRIBER_H