/*

* Copyright (c) 2006-2006 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:   ?description

*

*/

#ifndef IAD_UPDATE_NODE_HANDLER_OBSERVER_H

#define IAD_UPDATE_NODE_HANDLER_OBSERVER_H

#include <e32base.h>

class MNcdNode;

class MIAUpdateNodeHandlerObserver

{

public:

    /**

     * Node load of the node is completed successfully and data of the node

     * is updated.

     *

     * @param aNode The node whose data is updated.

     * @param aInstalling indicates if the node is being installed (only used by content handler)

     */

    virtual void NodeUpdated( MNcdNode* aNode, TBool aInstalling = EFalse ) = 0;

    /**

     * Node load of a parent node is completed.

     *

     * @param aNode The parent node which is loaded.

     * @param aError The completion code. KErrNone if the loading

     * process has been completed successfully. Otherwise some

     * of the system wide error codes.

     */

    virtual void ParentNodeLoadComplete( MNcdNode* aNode, TInt aError ) = 0;

    /**

     * All node loads started by this observer are completed.

     */

    virtual void NodeLoadsComplete() = 0;

    /**

     * All structure loads started by this observer are completed.

     *

     * @param aError Completion code:

     *   - KErrNone if strcuture loads was completed successfully.

     *   - KErrCancel if the structure load is canceled.

     *   - Otherwise some of the system wide error codes.

     *     NOTE: If a structure load operation fails all ongoing structure

     *     load operations started by this observer are canceled.

     */

    virtual void StructureLoadsComplete( TInt aError ) = 0;

    /**

     * Child node load has failed.

     *

     * @param aError Error code.

     */

    virtual void NotifyNodeLoadError( TInt aError ) = 0;

protected:

    /**

     * Protected destructor to prevent unwanted deletion.

     * The object can be deleted only through the inherited

     * classes.

     */

    virtual ~MIAUpdateNodeHandlerObserver() { }

};

#endif // IAD_UPDATE_NODE_HANDLER_OBSERVER_H