// Copyright (c) 2000-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

// which accompanies this distribution, and is available

// at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// Attribute Look-Up-Table header

// The Attribute Lookup Table maintains a global set of unique IDs to be defined for document

// node attributes and language tags. It does this by generating a unique ID for any descriptor

// passed to it. This descriptor is in fact a pointer to a copy of the string. Once a string

// has been seen once, any further references to it will map back to the same ID (pointer)

// value.

// 

//

#if !defined(__CWAPENGINE_LUT_H__)

#define __CWAPENGINE_LUT_H__

#include <e32base.h>

class RTest;

class CAttributeLookupTableNode;

//##ModelId=3B666BC70189

class CAttributeLookupTable : public CBase

/** Provides an attribute lookup table, which maintains a global set of unique IDs to be defined 

	for document node attributes and language tags. 

	It does this by generating a unique (in the scope of the lookup table object) ID for any string 

	passed to it. Once a string has been seen once, any further references to it will map back to the 

	same ID value. 

	@publishedAll

	@released

*/

{

public:

	//##ModelId=3B666BC701E3

	IMPORT_C ~CAttributeLookupTable();

	//##ModelId=3B666BC701DC

	IMPORT_C static CAttributeLookupTable* CAttributeLookupTable::NewL();

	//##ModelId=3B666BC701DA

	IMPORT_C const HBufC* Des2IDL( const TDesC& ); // map descriptor to ID

	//##ModelId=3B666BC701D3

	IMPORT_C const HBufC* KeyExists( const TDesC& ); // check to see if the given descriptor already exists

	//##ModelId=3B666BC701D2

	IMPORT_C void Reset(); // clear the table

	// debug hook

	typedef enum{

		EPrint,

		EPrintWholeTable

	} TDebugSelectorType;

	//##ModelId=3B666BC701C6

	IMPORT_C void Debug( TDebugSelectorType aSelector, TAny* aParam1, TAny* aParam2 );

private:

	//##ModelId=3B666BC701C5

	CAttributeLookupTable();

	//##ModelId=3B666BC701BF

	void ConstructL();

	//##ModelId=3B666BC701BD

	CAttributeLookupTableNode* FindDes( const TDesC& );

	//##ModelId=3B666BC701BB

	TUint Hash( const TDesC& );

	//##ModelId=3B666BC701A9

	CArrayPtrFlat<CArrayPtrSeg<CAttributeLookupTableNode> >* iList;

};

#endif // __CWAPENGINE_LUT_H__