// Copyright (c) 2007-2009 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:

//

#ifndef PAIRINGSCACHE_H

#define PAIRINGSCACHE_H

#include <e32base.h>

#include "RegistryHelpers.h"

class CBTPairedBDAddrGetter;

class MBTPairingsCacheObserver

	{

public:

	virtual void MbpcoDeferredDecisionResolved(TInt aError) = 0;

	};

NONSHARABLE_CLASS(CBTPairingsCache) : public CBase, public MBTPairedDeviceNotifier

	{

public:

	enum TPairingState

		{

		ENotPaired,

		EPaired,

		EDeferred, // Issued when we are waiting for a registry update.

		};

public:

	static CBTPairingsCache* NewL(MBTPairingsCacheObserver& aObserver, RBTRegServ& aRegServ);

	~CBTPairingsCache();

   	void UpdateCache();

	TPairingState IsPaired(const TBTDevAddr& aBDAddr);

private:

	CBTPairingsCache(MBTPairingsCacheObserver& aObserver);

	void ConstructL(RBTRegServ& aRegServ);

	static TBool AreBDAddrsEqual(const TBTDevAddr& aA, const TBTDevAddr& aB);

    TInt PairedDeviceIndex(const TBTDevAddr& aBDAddr);

	TBool InPairingCache(const TBTDevAddr& aBDAddr);

	void DoUpdateCache();

	void RemoveAllPairedDevices();

	void InformObserver(TInt aError);

	TInt AddPairedDevice(const TBTDevAddr& aAddr);

private: // MBTPairedDeviceNotifier

	virtual void MbpdnAddPairedDevices(const RBTDeviceArray& aAddrs);

	virtual void MbpdnErrorInGettingPairedDevices(TInt aError);

private:

	enum TCacheState

		{

		EValid,

		EUpdateOutstanding,

		EUpdateFailed,

		};

private:

	MBTPairingsCacheObserver& iObserver;

	CBTPairedBDAddrGetter* iBTPairedBDAddrGetter;

	RArray<TBTDevAddr> iPairedBDAddrs;

	TCacheState iCacheState;

	TBool iDeferredDecision;

	};

#endif // PAIRINGSCACHE_H