--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/windowing/windowserver/nonnga/remotegc/CacheBase.cpp	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,84 @@
+// 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:
+//
+
+#include "CacheBase.h"
+
+/**
+Constructor
+Initialized the iCachedItems array with granularity 8 and an offset to iHandle in TCacheEntry,
+which will be used to find specific entries later.
+*/
+CCacheBase::CCacheBase() : iCachedItems(8, _FOFF(TCacheEntry, iHandle))
+	{
+	
+	}
+	
+CCacheBase::~CCacheBase()
+	{
+	for(TInt i = 0; i < iCachedItems.Count(); i++)
+		{
+		delete iCachedItems[i].iCachedItem;
+		iCachedItems[i].iCachedItem = NULL;
+		}
+		
+	iCachedItems.Reset();	
+	}
+
+/**
+Begins an update of the cache.
+*/
+void CCacheBase::BeginUpdate()
+	{
+	// Sets all cached items to not used
+	for(TInt i = 0; i < iCachedItems.Count(); i++)
+		{
+		iCachedItems[i].iIsUsed = EFalse;
+		}		
+	}
+
+/**
+End an update of the cache.
+*/
+void CCacheBase::EndUpdate()
+	{
+	// Removes all cached items that are not used
+	for(TInt i = 0; i < iCachedItems.Count(); i++)
+		{
+		if(!iCachedItems[i].iIsUsed)
+			{
+			delete iCachedItems[i].iCachedItem;
+			iCachedItems.Remove(i--);
+			}			
+		}
+	}
+	
+/**
+Returns an item from the cache corresponding to a specific handle.
+
+@param aHandle A handle to match against an item in the cache.
+@return The item that matches the handle provided as a parameter.
+*/
+const CBase* CCacheBase::Resolve(TInt aHandle)
+	{
+	TCacheEntry entry(aHandle);
+	TInt index = iCachedItems.FindInUnsignedKeyOrder(entry);
+	
+	if(index != KErrNotFound)
+		return iCachedItems[index].iCachedItem;		
+	else
+		return NULL;
+	}
+
+