--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/PECengine/AttributeLibrary2/SrcAttributeBase/CPEngAttrModelAsyncDataSetHook.h	Thu Dec 17 08:41:52 2009 +0200
@@ -0,0 +1,150 @@
+/*
+* Copyright (c) 2004 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:  Attribute asynhronous data set hook.
+*
+*/
+
+#ifndef CPENGATTRMODELASYNCDATASETHOOK_H
+#define CPENGATTRMODELASYNCDATASETHOOK_H
+
+//  INCLUDES
+#include <E32Base.h>
+
+
+//FORWARD DECLARATION
+class CPEngPresenceAttrModel;
+class MPEngPresenceAttrModelTypeImp;
+
+
+
+// CLASS DECLARATION
+/**
+ * Attribute asynhronous data set hook.
+ *
+ * @since 3.0
+ */
+NONSHARABLE_CLASS( CPEngAttrModelAsyncDataSetHook ) : public CActive
+    {
+public: //Constructor and destructor
+
+    /**
+     * C++ default constructor.
+     */
+    CPEngAttrModelAsyncDataSetHook();
+
+
+    /**
+     * Destructor.
+     * Cancels any outstanding request.
+     */
+    ~CPEngAttrModelAsyncDataSetHook();
+
+
+public: // New functions
+
+    /**
+     * Initializess the hook.
+     *
+     * Sets the request status where to hook in
+     * and also the attribute objects which to callback
+     * when the request is completed or gets canceled.
+     *
+     * If hook is already active, leaves with KErrInUse.
+     *
+     * @since 3.0
+     * @param aStatus The request status to hook in.
+     * @param aAttributeModel The attribute model owning the hook.
+     * @param aTypeImp The attribute model implementation
+     * which data set to hook in.
+     */
+    void InitializeLC( TRequestStatus& aRequestStatus,
+                       CPEngPresenceAttrModel& aAttributeModel,
+                       MPEngPresenceAttrModelTypeImp& aTypeImp );
+
+
+
+    /**
+     * Gets the hooks own request status.
+     *
+     * This request status is given prior
+     * starting the hook to concrete asynchronous
+     * request.
+     *
+     * @since 3.0
+     * @param The hook own request status.
+     */
+    TRequestStatus& Status();
+
+
+    /**
+     * Starts the data set hook.
+     *
+     * The hook must be properly initialized before a
+     * call to start.
+     *
+     * Registered attribute object callbacks are called
+     * when something happens in the hook.
+     *
+     * If the hook wasn't properly initialized before
+     * starting, panics.
+     *
+     * @since 3.0
+     */
+    void Activate();
+
+
+protected:  // Functions from CActive
+
+    /**
+     * Gets called when actual request completes.
+     *
+     * @since 3.0
+     */
+    void RunL();
+
+
+    /**
+     * Gets called when hook is cancelled.
+     *
+     * @since 3.0
+     */
+    void DoCancel();
+
+
+protected:  // Helpers
+    void Reset();
+    static void ResetTheHook( TAny* aHook );
+
+
+private:    // Data
+
+    //REF: Attribute model (owner) to update after complete
+    CPEngPresenceAttrModel*  iHookOwner;
+
+    //REF: Attribute model implementation to cancel
+    MPEngPresenceAttrModelTypeImp* iHookedImp;
+
+    //REF: Request status to complete after hook operation
+    TRequestStatus* iStatusToComplete;
+
+    };
+
+#endif      // CPENGATTRMODELASYNCDATASETHOOK_H
+
+// End of File
+
+
+
+
+