--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layouts/cdl/CdlEngine/inc/CdlLibrary.h	Thu Dec 17 09:14:12 2009 +0200
@@ -0,0 +1,121 @@
+/*
+* Copyright (c) 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 CDLLIBRARY_H
+#define CDLLIBRARY_H
+
+#include <e32base.h>
+#include <CdlEngDef.h>
+#include <CdlEngine.h>
+#include <babitflags.h>
+
+class CCdlLibManager;
+class REComSession;
+
+
+GLREF_D const TUid KCdlLibraryUid;
+
+_LIT(KCdlLibsPath,"\\sys\\bin\\");
+_LIT(KCdlLibsLoaderPath,"z:\\sys\\bin\\;\\sys\\bin\\");
+
+/**
+* CDL's version of RLibrary.
+* This suppresses calling of entry points on DLL load and close.
+*/
+class RCdlLibrary
+	{
+public:
+	RCdlLibrary();
+
+	void Close();
+	TInt CdlLoad(const TDesC& aLibName, TBool aRomOnly);
+
+	const TCdlArray<SCdlCustomisation>& ContentsL() const;
+	const SCdlCustomisation* CustomisationL(TUid aUid, TInt aImplId) const;
+	TPtrC Name() const;
+	const TDesC* FullName() const;
+	TBool SameShortName(const TDesC& aShortLibName);
+
+	TInt& RefCount() { return iRefCount; }
+
+	TBool IsLibLoadedAsRomOnly() const;
+	void SetLibLoadedAsRomOnly();
+
+public:
+	static TPtrC ExtractName(const TDesC& aLibName);
+	static TBool CheckIfNotRomOnly(TBool aRomOnly, const TDesC& aName);
+
+private:
+	HBufC* iName;			// owned, the full path name of the library
+	TPtrC iShortName;		// file name without extension or path, points to content of iName
+	TInt iRefCount;
+	TBitFlags iFlags;
+	TUid iEcomDtorUid;
+	TAny* iEcomImpl;
+	};
+
+
+/**
+* A reference to a CDL library. This allows the CDL library manager to reference count
+* RCdlLibrary objects, thereby preventing many instances of the same library existing.
+*/
+class RCdlLibRef
+	{
+public:
+	RCdlLibRef();
+	void Close();
+	RCdlLibrary* Lib() const;
+	TPtrC Name() const;
+
+private:
+	friend class CCdlLibManager;	// only CCdlLibManager can set a reference
+	void SetRef(CCdlLibManager* aLibMan, RCdlLibrary* aLib);
+
+private:
+	CCdlLibManager* iLibMan;		// not owned
+	RCdlLibrary* iLib;				// shared ownership with CCdlManager and all other references to this library
+	};
+
+
+/**
+* The CDL library manager. Maintains one RCdlLibrary for each CDL DLL that is required
+* by the engine and its clients.
+*/
+NONSHARABLE_CLASS(CCdlLibManager) : public CBase
+	{
+public:
+	CCdlLibManager();
+	~CCdlLibManager();
+	void ConstructL();
+
+	TBool IsLibLoadedAsRomOnly(const TDesC& aLibName) const;
+	RCdlLibRef LoadL(const TDesC& aLibName, RCdlLibrary* aLib, TBool aRomOnly);
+	void Close(RCdlLibrary* aLib);
+	RCdlLibrary* FindLib(const TDesC& aLibName) const;
+
+private:
+
+	static TInt LazyUnload(TAny* aThis);
+	void DoLazyUnload();
+	
+private:
+	CArrayPtrFlat<RCdlLibrary> iLibs;	// shared ownership of contained libraries with RCdlLibRef objects
+	REComSession* iEcom;
+	CAsyncCallBack* iLazyUnloader;
+	};
+
+
+#endif