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// Copyright (c) 2007-2009 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:
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// Declares the internal observer classes used by CDvbhReceiverInfo.
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//
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//
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/**
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@file
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@internalComponent
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@prototype
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*/
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#ifndef DVBHRECEIVERINFOOBSERVER_H
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#define DVBHRECEIVERINFOOBSERVER_H
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#include "dvbhstubcommon.h"
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#include <e32property.h>
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#include <e32cons.h>
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class MDvbhStateObserver;
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class MDvbhSignalQualityObserver;
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class MDvbhPlatformObserver;
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class MDvbhNetworkTimeObserver;
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class MDvbhFrequencyObserver;
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class MDvbhCellIdObserver;
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class MDvbhNetworkIdObserver;
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class MDvbhExtBatteryStateObserver;
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class MDvbhExtConnectionObserver;
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class MDvbhExtAntennaConnectionObserver;
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/**
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* Interface to abstract the callback to be called when an RProperty changes.
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*/
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class MPropertyNotifier
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{
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public:
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/**
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* Callback to be called when an RProperty changes.
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* Implementations will probably want to call the appropriate callback on an external observer object.
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* @param aProperty A handle to the RProperty that has just changed.
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*/
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virtual void NotifyPropertyChanged(RProperty& aProperty) = 0;
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/**
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* Called to get the key of the property of interest.
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* @return the key value.
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*/
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virtual TInt GetPropertyKey() const = 0;
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};
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/**
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* CDvbhPropertyObserver is the class used to observer changes to an RProperty.
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*
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* To observer changes to a particular RProperty, users must call
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* CDvbhPropertyObserver::SetObserver() passing in an MPropertyNotifier
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* implementation corresponding to the RProperty of interest.
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* When the RProperty changes, CDvbhPropertyObserver::RunL() will call
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* MPropertyNotifier::NotifyPropertyChanged() of the implementation.
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*/
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NONSHARABLE_CLASS(CDvbhPropertyObserver) : public CActive
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{
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public:
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CDvbhPropertyObserver();
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~CDvbhPropertyObserver();
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TInt SetObserver(MPropertyNotifier* aPropertyNotifier);
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private:
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void RunL();
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void DoCancel();
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private:
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MPropertyNotifier* iPropertyNotifier; //Not owned
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RProperty iProperty;
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};
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/**
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* Thin template base class for the RProperty notifiers.
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*/
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NONSHARABLE_CLASS(TDvbhNotifierBase)
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{
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protected:
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TDvbhNotifierBase();
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void SetExternalObserver(TAny* aObserver);
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protected:
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TAny* iExternalObserver; //Not owned
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};
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/**
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* Template on which RProperty Notifiers are based. Contains all the
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* code common to a Notifier for any RProperty.
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*
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* The template parameter OBSERVER must be one of the observer M-classes declard in dvbhreceiverinfo.h.
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*/
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template<class OBSERVER>
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NONSHARABLE_CLASS(TDvbhNotifier) : protected TDvbhNotifierBase
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{
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public:
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inline void SetExternalObserver(OBSERVER* aObserver);
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};
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/**
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* The state notifier for CDvbhReceiverInfo::CPrivateData.
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*/
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NONSHARABLE_CLASS(TDvbhStateNotifier) : public TDvbhNotifier<MDvbhStateObserver>,
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public MPropertyNotifier
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{
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public:
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virtual TInt GetPropertyKey() const;
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virtual void NotifyPropertyChanged(RProperty& aProperty);
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};
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/**
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* The SignalQuality notifier for CDvbhReceiverInfo::CPrivateData.
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*/
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NONSHARABLE_CLASS(TDvbhSignalQualityNotifier) : public TDvbhNotifier<MDvbhSignalQualityObserver>,
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public MPropertyNotifier
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{
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public:
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virtual TInt GetPropertyKey() const;
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virtual void NotifyPropertyChanged(RProperty& aProperty);
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};
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/**
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* The Platform notifier for CDvbhReceiverInfo::CPrivateData.
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*/
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NONSHARABLE_CLASS(TDvbhPlatformNotifier) : public TDvbhNotifier<MDvbhPlatformObserver>,
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public MPropertyNotifier
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{
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public:
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virtual TInt GetPropertyKey() const;
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virtual void NotifyPropertyChanged(RProperty& aProperty);
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};
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/**
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* The NetworkTime notifier for CDvbhReceiverInfo::CPrivateData.
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*/
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NONSHARABLE_CLASS(TDvbhNetworkTimeNotifier) : public TDvbhNotifier<MDvbhNetworkTimeObserver>,
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public MPropertyNotifier
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{
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public:
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virtual TInt GetPropertyKey() const;
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virtual void NotifyPropertyChanged(RProperty& aProperty);
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};
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/**
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* The Frequency notifier for CDvbhReceiverInfo::CPrivateData.
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*/
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NONSHARABLE_CLASS(TDvbhFrequencyNotifier) : public TDvbhNotifier<MDvbhFrequencyObserver>,
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public MPropertyNotifier
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{
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public:
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virtual TInt GetPropertyKey() const;
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virtual void NotifyPropertyChanged(RProperty& aProperty);
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};
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/**
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* The CellId notifier for CDvbhReceiverInfo::CPrivateData.
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*/
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NONSHARABLE_CLASS(TDvbhCellIdNotifier) : public TDvbhNotifier<MDvbhCellIdObserver>,
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public MPropertyNotifier
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{
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public:
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virtual TInt GetPropertyKey() const;
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virtual void NotifyPropertyChanged(RProperty& aProperty);
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};
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/**
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* The NetworkId notifier for CDvbhReceiverInfo::CPrivateData.
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*/
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NONSHARABLE_CLASS(TDvbhNetworkIdNotifier) : public TDvbhNotifier<MDvbhNetworkIdObserver>,
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public MPropertyNotifier
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{
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public:
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virtual TInt GetPropertyKey() const;
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virtual void NotifyPropertyChanged(RProperty& aProperty);
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};
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/**
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* The battery state for CDvbhReceiverInfo::CPrivateData.
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*/
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NONSHARABLE_CLASS(TDvbhExtBatteryStateNotifier) : public TDvbhNotifier<MDvbhExtBatteryStateObserver>,
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public MPropertyNotifier
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{
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public:
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virtual TInt GetPropertyKey() const;
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virtual void NotifyPropertyChanged(RProperty& aProperty);
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};
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/**
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* The connection state for CDvbhReceiverInfo::CPrivateData.
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*/
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NONSHARABLE_CLASS(TDvbhExtConnectionStateNotifier) : public TDvbhNotifier<MDvbhExtConnectionObserver>,
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public MPropertyNotifier
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{
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public:
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virtual TInt GetPropertyKey() const;
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virtual void NotifyPropertyChanged(RProperty& aProperty);
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};
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/**
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* The connection state for CDvbhReceiverInfo::CPrivateData.
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*/
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NONSHARABLE_CLASS(TMtvAccConnectionStateNotifier) : public TDvbhNotifier<MDvbhExtConnectionObserver>,
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public MPropertyNotifier
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{
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public:
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virtual TInt GetPropertyKey() const;
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virtual void NotifyPropertyChanged(RProperty& aProperty);
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};
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/**
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* The antenna connection state for CDvbhReceiverInfo::CPrivateData.
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*/
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NONSHARABLE_CLASS(TMtvAccAntennaConnectionStateNotifier) : public TDvbhNotifier<MDvbhExtAntennaConnectionObserver>,
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public MPropertyNotifier
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{
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public:
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virtual TInt GetPropertyKey() const;
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virtual void NotifyPropertyChanged(RProperty& aProperty);
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};
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#include "dvbhreceiverinfoobserver.inl"
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#endif //DVBHRECEIVERINFOOBSERVER_H
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