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/*
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* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: Interface for signal strength handler.
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*
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*/
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#ifndef MSIGNALSTRENGTHHANDLER_H
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#define MSIGNALSTRENGTHHANDLER_H
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// INCLUDES
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#include <e32base.h>
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// FORWARD DECLARATIONS
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class MSignalStrengthObserver;
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// CLASS DECLARATION
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/**
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* Interface for a class which handles changes
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* in phone signal strength.
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*/
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class MSignalStrengthHandler
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{
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public: // Constructors and destructor
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/**
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* Destructor.
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*/
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virtual ~MSignalStrengthHandler() {};
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public: // New functions
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/**
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* Returns ETrue if signal observing is supported, EFalse otherwise.
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* @return ETrue if signal observing is supported, EFalse otherwise.
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*/
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virtual TBool ObservingSupported() = 0;
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/**
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* Returns ETrue if signal strength requests are supported, EFalse otherwise.
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* @return ETrue if signal strength requests are supported, EFalse otherwise.
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*/
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virtual TBool RequestsSupported() = 0;
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/**
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* Sets the signal strength observer. May leave with KErrNotSupported
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* if signal strength observing is not supported.
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* @param aObserver Observer for signal strength. Ownership is not passed.
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*/
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virtual void SetSignalStrengthObserverL( MSignalStrengthObserver* aObserver ) = 0;
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/**
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* Starts observing the signal strength. May leave with KErrNotSupported
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* if signal strength observing is not supported.
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*/
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virtual void StartObservingL() = 0;
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/**
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* Stops the signal strength observing.
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*/
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virtual void StopObservingL() = 0;
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/**
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* Returns the current signal strength. May leave with KErrNotSupported
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* if signal strength requests are not supported.
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* @return The current signal strength.
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*/
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virtual TInt SignalStrengthL() = 0;
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/**
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* Returns the current bar value. May leave with KErrNotSupported
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* if bar value requests are not supported.
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* @return The current signal strength.
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*/
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virtual TInt BarValueL() = 0;
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};
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#endif // MSIGNALSTRENGTHHANDLER_H
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// End of File
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