/*

* Copyright (c) 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:  Class declaration for MDiagExecPlanEntryImplObserver.h

*

*/

#ifndef DIAGEXECPLANENTRYIMPLOBSERVER_H

#define DIAGEXECPLANENTRYIMPLOBSERVER_H

class CDiagExecPlanEntryImpl;

/**

* Diagnostics Plug-in Execution Plan Entry Observer Interface

*

* This interface is called by CDiagExecPlanEntryImpl and its derived classes

* to notify progress of plugin execution.

*

* @since S60 v5.0

*

*/

class MDiagExecPlanEntryImplObserver

    {

public:

    /**

    * Notify plugin execution progress

    * @param aSender        - Reference to the plan entry that caused this event.

    * @param aCurrentStep   - current execution step.

    * @param aTotalSteps    - Total number of steps to execute.

    */

    virtual void ExecPlanEntryProgressL( CDiagExecPlanEntryImpl& aSender,

                                         TUint aCurrentStep,

                                         TUint aTotalSteps ) = 0;

    /**

    * Notify plugin execution completion. 

    *   This is called only when it is completed normally.

    *   It will not becalled if execution is interrupted by watchdog or by client.

    * @param aSender        - Reference to the plan entry that caused this event.

    */

    virtual void ExecPlanEntryExecutedL( CDiagExecPlanEntryImpl& aSender ) = 0;

    /**

    * Notify that a critical error has occured.

    *   This is called when there is a critical execution error

    *   that cannot be recovered. Engine should not execute any

    *   more plug-ins after this point.

    * @param aError - Error number.

    */

    virtual void ExecPlanEntryCriticalError( TInt aError ) = 0;

    };

#endif // DIAGEXECPLANENTRYIMPLOBSERVER_H

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