sl@0: // Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: // All rights reserved.
sl@0: // This component and the accompanying materials are made available
sl@0: // under the terms of "Eclipse Public License v1.0"
sl@0: // which accompanies this distribution, and is available
sl@0: // at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: //
sl@0: // Initial Contributors:
sl@0: // Nokia Corporation - initial contribution.
sl@0: //
sl@0: // Contributors:
sl@0: //
sl@0: // Description:
sl@0: //
sl@0: 
sl@0: #ifndef __CACHEBASE_H__
sl@0: #define __CACHEBASE_H__
sl@0: 
sl@0: #include <e32base.h>
sl@0: #include <e32cmn.h>
sl@0: 
sl@0: /**
sl@0: A cache base-class providing basic functionality for resolving a cached item.
sl@0: */
sl@0: NONSHARABLE_CLASS(CCacheBase): public CBase
sl@0: 	{	
sl@0: public:	
sl@0: 	void BeginUpdate();	
sl@0: 	void EndUpdate();
sl@0: 
sl@0: protected:
sl@0: 	CCacheBase();
sl@0: 	~CCacheBase();
sl@0: 	
sl@0: 	virtual TInt UseL(TInt aHandle) = 0;
sl@0: 	virtual const CBase* Resolve(TInt aHandle);
sl@0: 	
sl@0: protected:
sl@0: 	struct TCacheEntry
sl@0: 		{
sl@0: 		TCacheEntry(TInt aHandle)
sl@0: 			{
sl@0: 			iHandle = aHandle;
sl@0: 			}
sl@0: 			
sl@0: 		TInt iHandle;
sl@0: 		TBool iIsUsed;
sl@0: 		CBase* iCachedItem;
sl@0: 		};
sl@0: 
sl@0: protected:		
sl@0: 	RArray<TCacheEntry> iCachedItems;
sl@0: 	};
sl@0: 	
sl@0: #endif //__CACHEBASE_H__
sl@0: 
sl@0: 
sl@0: 
sl@0: