// Copyright (c) 2008-2009 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:

//

/**

 @file

 @internalComponent

*/

#ifndef SYMBIAN_PDPTIERMANAGER_H

#define SYMBIAN_PDPTIERMANAGER_H

#include <comms-infras/coretiermanager.h>

#include <comms-infras/contentionmanager.h>

#include <etelpckt.h>

using namespace ESock;

class CMBMSEngine;

class CContextStatusMonitor;

class CContextTypeChecker;

class MPacketServiceNotifier

	{

public:	

	virtual void PacketServiceAttachedCallbackL() = 0;

	};

class MContextEventsObserver

	{

public:

	virtual void PrimaryContextAddedL(const TName* aContextName) = 0;

	virtual void SecondaryContextAdded(const TName* aContextName) = 0;

	virtual void PrimaryContextDeleted(const CContextStatusMonitor* aContextStatusMonitor) = 0;

	virtual void ContextMonitoringError(const CContextStatusMonitor* aContextStatusMonitor, TInt aError) = 0;

	virtual void ContextTypeCheckingError(const TName* aContextName, TInt aError) = 0;

	};

class CContextStatusMonitor : public CActive

	{

public:

	CContextStatusMonitor(RPacketService& aPacketService, MContextEventsObserver& aCallback);

	~CContextStatusMonitor();

public:

	TBool StartL(const TName& aContextName);

	inline TBool IsPassedThroughActiveState() const;

private:

	void RunL();

	void DoCancel();

	TInt RunError(TInt aError);

private:

	RPacketService& iPacketService;

	RPacketContext iPacketContext;

	RPacketContext::TContextStatus iContextStatus;

	MContextEventsObserver& iCallback;

	TName iContextName;

	TBool iWasActive;

	};

class CPrimaryContextsMonitor : public CActive, MContextEventsObserver

	{

	enum TState {EEnumeratingContexts, EGettingInfo, EListening};

public:

	CPrimaryContextsMonitor(RPacketService& aPacketService, MContentionObserver& aCallback);

	~CPrimaryContextsMonitor();

public:

	void StartL();

// from MContextEventsObserver

	void PrimaryContextAddedL(const TName* aContextName);

	void SecondaryContextAdded(const TName* aContextName);

	void PrimaryContextDeleted(const CContextStatusMonitor* aContextStatusMonitor);

	void ContextMonitoringError(const CContextStatusMonitor* aContextStatusMonitor, TInt aError);

	void ContextTypeCheckingError(const TName* aContextName, TInt aError);

private:

	void RunL();

	void DoCancel();

	TInt RunError(TInt aError);

	void DeleteContextStatusMonitor(const CContextStatusMonitor* aContextStatusMonitor);

	void SwitchStateL();

	void StartContextStatusMonitoringL(const TName& aContextName);

	void RemoveContextNameAndCheckNext(const TName* aContextName);

	void ProcessError(TInt aError);

private:

	RPointerArray<CContextStatusMonitor> iContextMonitors;

	RPointerArray<TName> iAddedContextsNames;

	CContextTypeChecker* iContextTypeChecker;

	RPacketService& iPacketService;

	TState iState;

	RPacketService::TNifInfoV2 iCurrentNifInfo;

	TInt iInitialNifsCount;

	TInt iCurrentNifIndex;

	TBool iFirstContextAdded;

	MContentionObserver& iCallback;

	};

class CContextTypeChecker : public CActive

	{

public:

	CContextTypeChecker(RPacketService& aPacketService, MContextEventsObserver& aCallback);

	~CContextTypeChecker();

public:

	void Start(const TName* aContextName);

	void RunL();

	TInt RunError(TInt aError);

	void DoCancel();

private:

	RPacketService& iPacketService;

	const TName* iContextName;

	MContextEventsObserver& iCallback;

	TInt iCountInNif;

	};

class CPdpContentionManager : public CContentionManager

	{

public:

	static CPdpContentionManager* NewL(const ESock::CTierManagerBase& aTierManager, RPacketService& aPacketService);

	~CPdpContentionManager();

public:

	void StartMonitoringL();

private:

	void ConstructL(RPacketService& aPacketService);

	CPdpContentionManager(const ESock::CTierManagerBase& aTierManager);

private:

	// from CContentionManager

	virtual void ContentionResolved(const TContentionRequestItem& aContentionRequest, TBool aResult);

	virtual void ContentionOccured(ESock::CMetaConnectionProviderBase& aMcpr);

	virtual void ReportContentionAvailabilityStatus(ESock::CMetaConnectionProviderBase& aMcpr, const ESock::TAvailabilityStatus& aStatus) const;

private:

	CPrimaryContextsMonitor* iPrimaryContextsMonitor;

	};

//PDP Tier Manager

class CPDPTierManager : public CCoreTierManager, public MPacketServiceNotifier

	{

public:

	static CPDPTierManager* NewL(ESock::CTierManagerFactoryBase& aFactory);

	~CPDPTierManager();

public:

	void PacketServiceAttachedCallbackL();

	TBool IsUnavailableDueToContention(const ESock::CMetaConnectionProviderBase* aMetaConnectionProvider) const;

protected:

    CPDPTierManager(ESock::CTierManagerFactoryBase& aFactory, const MeshMachine::TNodeActivityMap& aActivityMap);

    virtual ESock::MProviderSelector* DoCreateProviderSelectorL(const Meta::SMetaData& aSelectionPreferences);

	virtual void ReceivedL(const Messages::TRuntimeCtxId& aSender, const Messages::TNodeId& aRecipient, Messages::TSignatureBase& aMessage);

	TBool HandleContentionL(ESock::CMetaConnectionProviderBase* aMcpr, Messages::TNodeId& aPendingCprId, TUint aPriority);

private:

    void ConstructL();

private:

	CMBMSEngine* iMBMSEngine;

	CPdpContentionManager* iPdpContentionManager;

	};

inline TBool CContextStatusMonitor::IsPassedThroughActiveState() const

	{

	return iWasActive;

	}

#endif // SYMBIAN_PDPTIERMANAGER_H