--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/textrendering/textformatting/undo/UniqueInstanceBase.h	Tue Feb 02 02:02:46 2010 +0200
@@ -0,0 +1,105 @@
+/*
+* 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 "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: 
+*
+*/
+
+
+#ifndef UNIQUEINSTANCEBASE_H_
+#define UNIQUEINSTANCEBASE_H_
+
+#include <e32base.h>
+
+// The namespace UniqueInstance contains definitions that are not useful to the
+// user, but are useful to the implementation. There is no need to use any symbols
+// within it directly.
+namespace UniqueInstance
+{
+
+/**
+@internalComponent
+*/
+typedef TInt TCompareFn(void*,void*);
+
+/**
+destroy free aObject.
+@internalComponent
+*/
+typedef void TDeleteFn(void* aObjectToBeDeleted);
+/** 
+Copy aObjectToCopy into a newly allocated buffer, return the new object.
+aObjectSize is the size of the object that the repository has been specialised
+to work with. If this is not a true size of the object (for example in the case
+of HBufC) this value should be ignored.
+@internalComponent
+*/
+typedef void* TCopyFnL(void* aObjectToCopy, TInt aObjectSize);
+
+struct SElement;
+class CRepositoryImpl;
+class RInstanceImpl;
+
+/**
+ * Type-unsafe repository with shared equivalent objects.
+ *
+ * @internalComponent
+ * @since App-frameworks6.1
+ */
+NONSHARABLE_CLASS(CUniqueInstanceRepositoryBase) : public CBase
+	{
+public:
+	static void* DumbCopyL(void* aObjectTocopy, TInt aNumberOfBytes);
+	static void DumbDelete(void* aDeleteThis);
+
+	void ConstructL(TCompareFn*, TDeleteFn*, TCopyFnL*,
+		TInt aMaxLinks, TInt aObjectSize);
+	~CUniqueInstanceRepositoryBase();
+	void Test() const;
+
+private:
+	friend class RInstanceImpl;
+	CRepositoryImpl* iImpl;
+	};
+
+/**
+ * Type-unsafe repository client.
+ *
+ * @internalComponent
+ * @since App-frameworks6.1
+ */
+class RInstanceImpl
+	{
+public:
+	explicit RInstanceImpl(CUniqueInstanceRepositoryBase& aRepository);
+	~RInstanceImpl();		// asserts that no object is owned
+
+	void TakeL(void* aObject);
+	void TakeCopyL(void* aObject);
+	void* Peek() const;
+	void CopyTo(RInstanceImpl& aOther) const;
+	void MoveTo(RInstanceImpl& aOther);
+	void* DropL();
+	void Close();
+
+private:
+	RInstanceImpl(RInstanceImpl&);					// unimplemented
+	RInstanceImpl &operator=(const RInstanceImpl&);	// unimplemented
+
+	SElement* iPtr;
+	CRepositoryImpl* iRepository;
+	};
+}
+
+#endif	// UNIQUEINSTANCEBASE_H_
+