--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vpnengine/sit/inc/taskhandler.h	Thu Dec 17 09:14:51 2009 +0200
@@ -0,0 +1,96 @@
+/*
+* Copyright (c) 2003-2006 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:   Base class for all task handlers
+*
+*/
+
+
+
+// @file taskhandler.h
+
+#ifndef __TASK_HANDLER_H__
+#define __TASK_HANDLER_H__
+
+#include "sit.h"
+
+class MTaskHandlerManager;
+
+/**
+ * Parent class of all task handlers
+ */
+NONSHARABLE_CLASS(CTaskHandler) : public CActive, public MEventObserver
+    {
+public:
+    CTaskHandler(MTaskHandlerManager* aManager, const TTaskArrivedEventData& aTaskInfo,
+                 TEventType aCancelEventType, TDes8* iEventSpecPtr);
+    void Start();
+    void TaskDone();
+    void SetDelayedTaskEnd(TBool aDelayedTaskEnd);
+    
+public: // From MEventObserver
+    void EventOccured(TInt aStatus, TEventType aType, TDesC8* aData);
+
+private: // From CActive
+    void DoCancel();
+    void RunL();
+
+protected: // From CActive
+    TInt RunError(TInt aError);
+
+private:
+    void OnFetchTaskInfoEvent(TInt aStatus, TDesC8* aData);
+    void OnTaskRequestCancelledEvent(TInt aStatus);
+
+protected:
+    virtual void StartTaskHandling() = 0;
+    virtual void ReportResult(TInt aStatus) = 0;
+    
+    void GotoState(TInt aState);
+    void SetCurrState(TInt aState);
+    void SetNextState(TInt aState);
+    TInt CurrState();
+    TInt NextState();
+    virtual void ChangeStateL() = 0;
+    virtual void CancelOngoingOperation() = 0;
+
+    void ReportEvent(TEventType aEventType, TDesC8& aEventSpec, TDesC8& aEventData);
+    void TaskComplete(TInt aStatus = KErrNone);
+    void FatalError(TInt aStatus);
+
+protected:
+    MTaskHandlerManager* iManager;
+    const TTaskArrivedEventData& iTaskInfo;
+    TEventType iCancelEventType;
+    TDes8* iEventSpecPtr;
+
+    TInt iCurrState;
+    TInt iNextState;
+
+    TBool iDelayedTaskEnd;
+
+public:
+    REventMediator iEventMediator;
+    };
+
+/**
+ * An interface that the manager of task handlers must implement
+ */
+class MTaskHandlerManager
+    {
+public:
+    virtual void TaskHandlerComplete(CTaskHandler* aTaskHandler) = 0;
+    virtual void TaskHandlerFatalError(CTaskHandler* aTaskHandler, TInt aError) = 0;
+    };
+
+#endif // __TASK_HANDLER_H__