// Copyright (c) 2006-2009 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:

//

#if !defined(__CHECKEDUID_H__)

#define __CHECKEDUID_H__

#include <pcstore/pcstoredef.h>

#include <pcstore/uid.h>

namespace PCStore

{

class CDes8;

/**

@internalComponent

Encapsulates a set of three unique identifiers (UIDs) which, in combination, 

identify a system object such as a GUI application or a DLL. The three

component UIDs are referred to as UID1, UID2 and UID3.

An object of this type is referred to as a compound identifier or a UID type.

*/

class TUidType

	{

public:

	TUidType();

	TUidType(TUid aUid1);

	TUidType(TUid aUid1, TUid aUid2);

	TUidType(TUid aUid1, TUid aUid2, TUid aUid3);

	TBool operator !=(const TUidType& aUidType) const;

	TBool operator ==(const TUidType& aUidType) const ;

	const TUid& operator[](TInt aIndex) const;

	TBool IsValid() const ;

private:

	TUid MostDerived() const;

private:

	TUid iUid[3];

	};

/**

@internalComponent

Packages a Uid type together with a checksum.

@see TUidType

*/

class TCheckedUid

	{

public:

	TCheckedUid();

	TCheckedUid(const TUidType& aUidType);

	TCheckedUid(const CDes8& aDes);

	void Set(const TUidType& aUidType);

	void Set(const CDes8& aDes);

	CDes8 Des() const;

	const TUidType&  UidType() const;

private:

	TUint Check() const;

private:

	TUidType iType;

	TUint32 iCheck;

	};

class CStoreWriteStream;

CStoreWriteStream& operator<<(CStoreWriteStream& aStream,const TCheckedUid& aUid);

class CStoreReadStream;

CStoreReadStream& operator>>(CStoreReadStream& aStream, TCheckedUid& aUid);

}

#endif // !defined(__CHECKEDUID_H__)