// Copyright (c) 2007-2010 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:

// Interface to activation bitmap classes

//

#ifndef __TRACECOREACTIVATION_H__

#define __TRACECOREACTIVATION_H__

class MTraceCoreActivation;

class DTraceCoreSettings;

/**

 * Interface to get change notification from activation classes

 */

NONSHARABLE_CLASS( MTraceCoreActivationNotification )

    {

public:

    /**

     * Notification that the activation state has changed

     * 

     * @param aActivation the activation interface that was updated

     * @param aFromSettings ETrue if activation was due to settings read, EFalse if from some other source

     * @param aComponentId Component ID of the activation

     */

    virtual void ActivationChanged( MTraceCoreActivation& aActivation, TBool aFromSettings,

            TUint32 aComponentId ) = 0;

    };

/**

 * Interface to activation classes

 */

NONSHARABLE_CLASS( MTraceCoreActivation )

    {

public:

    /**

     * Checks if this bitmap supports the given component ID

     */

    virtual TBool IsComponentSupported( TUint32 aComponentID ) = 0;

    /**

     * Gets activated groups for this component ID

     * @param aComponentId the component ID

     */

    virtual RArray<TUint> GetActivatedGroups( const TUint32 aComponentId ) = 0;

    /**

     * Updates this activation object from the given settings

     * 

     * @param aSettings the settings to be read

     */

    virtual void ReadFromSettings( DTraceCoreSettings& aSettings ) = 0;

    /**

     * Updates the settings with the content of this activation object

     * 

     * @param aSettings the settings to be written

     */

    virtual void WriteToSettings( DTraceCoreSettings& aSettings ) = 0;

    /**

     * Registers an activation notification interface

     */

    virtual TInt RegisterActivationNotification( MTraceCoreActivationNotification& aNotification ) = 0;

     /**

     * Activate trace group.

     * Method can be called only from Symbian OS thread context. 

     * Activation of groupID/ComponentID from IRQs, IDFCs is not allowed.

     *

     * @param aComponentId The component ID

     * @param aGroupId The group ID

     */

    virtual void ActivateTrace( const TUint32 aComponentId, const TUint32 aGroupId ) = 0;

    /**

     * Deactivate trace group

     *

     * Method can be called only from Symbian OS thread context.

     * Activation of groupID/ComponentID from IRQs, IDFCs is not allowed.

     * 

     * @param aComponentId The component ID

     * @param aGroupId The group ID

     */

    virtual void DeactivateTrace( const TUint32 aComponentId, const TUint32 aGroupId ) = 0;

    /**

     * Deactivates all groups from a component

     * 

     * @param aComponentId The component ID

     */

    virtual void DeactivateAll( const TUint32 aComponentId ) = 0;

    /**

     * Reactivate all currently activated traces

     * 

     * @return KErrNone if refresh successful

     */

    virtual TInt RefreshActivations() { return KErrNotFound; };

    };

#endif // __TRACECOREACTIVATION_H__