// PropertyAccess.h

// 

// Copyright (c) 2010 Accenture. All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the "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:

// Accenture - Initial contribution

//

#ifndef PROPERTYACCESS_H

#define PROPERTYACCESS_H

#include <kernel.h>

#include <kern_priv.h>

class TNotifyRequest;

NONSHARABLE_CLASS(DPropertyAccess) : public DBase

	{

public:

	DPropertyAccess(DThread* aThread);

	~DPropertyAccess();

	TInt HandleProperty(TInt aFunction, TAny* aParams, TAny* aVal);

	TInt DoHandleProperty(DThread* aClient, TInt aFunction, TAny* aParams, TAny* aVal);

private:

	TInt GetAllPropertiesFrom(DThread* aClient, RPropertyRef& property, TAny* aVal);

	void CancelNotifys();

	static void PropertyChanged(TAny* aPtr, TInt aReason);

	void DoPropertyChanged(TNotifyRequest& aRequest, TInt aReason);

	TInt SetupNotifyAll(DThread* aClient, TAny* aParams, TAny* aVal);

	TInt SetupNotifyAll(TBool aBtrace, const TDesC8& aUserRequestsBuf);

private:

	DThread* iClient;

	SDblQue iRequests;

	TRequestStatus* iNotifyClientStatus;

	TAny* iClientNotifyPtr;

	TInt iMissedChanges;

	};

class TNotifyRequest

	{

public:

	TNotifyRequest(TPropertyCompleteFn aCompleteFn, TUid aCat, TInt aKey, DPropertyAccess* aPropertyAccess, TBool aBtrace)

		: iRequest(aCompleteFn, this), iPropertyAccess(aPropertyAccess), iBtrace(aBtrace), iCat(aCat), iKey(aKey)

		{}

public:

	RPropertyRef iProperty;

	TPropertySubsRequest iRequest;

	DPropertyAccess* iPropertyAccess;

	SDblQueLink iLink;

	TBool iBtrace; // If set, don't use iNotifyClientStatus/iClientNotifyPtr/iMissedChanges, just use BTrace

	// Lame, no way of getting these from the RPropertyRef

	TUid iCat;

	TInt iKey;

	};

#endif