--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/filemanager/Engine/inc/CFileManagerThreadWrapper.h	Wed Sep 01 12:31:07 2010 +0100
@@ -0,0 +1,155 @@
+/*
+* Copyright (c) 2006-2007 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:  Background thread functionality wrapper
+*
+*/
+
+
+
+#ifndef CFILEMANAGERTHREADWRAPPER_H
+#define CFILEMANAGERTHREADWRAPPER_H
+
+
+// INCLUDES
+#include <e32base.h>
+#include "MFileManagerThreadFunction.h"
+
+
+// CLASS DECLARATION
+/**
+*  The class implements a background thread functionality wrapper
+*
+*  @lib FileManagerEngine.lib
+*  @since 3.1
+*/
+NONSHARABLE_CLASS(CFileManagerThreadWrapper) : public CActive
+    {
+    public:
+        static CFileManagerThreadWrapper* NewL();
+
+        ~CFileManagerThreadWrapper();        
+
+    public: // New functions
+        /**
+        * Starts background thread. Can be used only by client thread.
+        * @since 3.1
+        * @param aFunction Reference to background thread abstraction.
+        * @param aPriority background thread priority
+        * @param aNotify client notify flags
+        *        see MFileManagerThreadFunction::TNotifyType
+        * @return System wide error code
+        */
+        TInt StartThread(
+            MFileManagerThreadFunction& aFunction,
+            TUint aNotify,
+            TThreadPriority aPriority );
+
+        /**
+        * Cancels background thread.
+        * Background thread is exited when ongoing ThreadStepL is finished.
+        * Can be used only by client thread.
+        * @since 3.1
+        */
+        void CancelThread();
+
+        /**
+        * Checks if background thread has been canceled.
+        * Can be used by both client and background threads.
+        * E.g. checks can be done inside long running ThreadStepL.
+        * @since 3.1
+        * @return ETrue if canceled, otherwise EFalse
+        */
+        TBool IsThreadCanceled() const;
+
+        /**
+        * Resumes thread when called after error or step finished 
+        * notification. Can only be used by client thread.
+        * @since 3.2
+        */
+        void ResumeThread();
+
+        /**
+        * Checks if thread has been started
+        * notification. Can only be used by client thread.
+        * @since 3.2
+        * @return ETrue if started, otherwise EFalse
+        */
+        TBool IsThreadStarted() const;
+
+    private: // From CActive
+        void RunL();
+
+        TInt RunError( TInt aErr );
+
+        void DoCancel();
+
+    private:
+        CFileManagerThreadWrapper();
+
+        void ConstructL();
+
+        static TInt ThreadFunction( TAny* ptr );
+
+        void ThreadFunctionL();
+
+        TInt NotifyClientAndWaitConfirm( TInt aErr );
+
+        void DoNotifyL( TInt aErr );
+
+        NONSHARABLE_CLASS(CNotifyObserver) : public CActive
+            {
+            public:
+                static CNotifyObserver* NewL(
+                    CFileManagerThreadWrapper& aWrapper );
+
+                ~CNotifyObserver();
+
+                void Activate();
+
+                void Complete( RThread& aThread, TInt aResult );
+
+            private: // From CActive
+                void RunL();
+
+                TInt RunError( TInt aErr );
+
+                void DoCancel();
+
+            private:
+                CNotifyObserver( CFileManagerThreadWrapper& aWrapper );
+
+            private:
+                CFileManagerThreadWrapper& iWrapper;
+            };
+
+    private: // Data
+        // Own: For synchronising client and background thread
+        RSemaphore iSemaphore;
+        // Own: Client thread id
+        TThreadId iClientId;
+        // Ref: Pointer to thread function
+        MFileManagerThreadFunction* iFunction;
+        // Own: Client notify type flags, Client writes and thread only reads
+        TUint iNotify;
+        // Own: Thread cancel indicator, Client writes and thread only reads
+        TBool iCancel;
+        // Own: Observer wrapper to notify client about thread events
+        CNotifyObserver* iNotifyObserver;
+        // Own: Thread resume pending indicator, Client reads and writes
+        TBool iResumePending;
+    };
+
+#endif // CFILEMANAGERTHREADWRAPPER_H
+
+// End of File