/*

* Copyright (c) 2005-2006 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:  Device status content publisher

*

*/

#ifndef M_AIDEVICESTATUSCONTENTOBSERVER_H

#define M_AIDEVICESTATUSCONTENTOBSERVER_H

class MAiDeviceStatusPublisher;

/**

 *  @ingroup group_devicestatusplugin

 *

 *  Device status content publisher.

 *

 *  All of the publishers uses this interface to publish content.

 *

 *  @since S60 3.2

 */

class MAiDeviceStatusContentObserver

    {

protected:

    /**

     * Virtual destructor.

     *

     * This cannot be used to destroy observer object.

     */

     virtual ~MAiDeviceStatusContentObserver() {};

public:

    /**

     * Publish unicode text.

     *

     * @since S60 3.2

     * @param aPublisher is reference to publisher which is publishing.

     * @param aContent is content id.

     * @param aText is published text.

     * @param aPriority is priority of the content.

     * @return KErrNone if publish is successful, otherwise system wide error code.

     */

    virtual TInt Publish( MAiDeviceStatusPublisher& aPublisher, TInt aContent,

                          const TDesC16& aText, TInt aPriority ) = 0;

    /**

     * Publish data buffer.

     *

     * @since S60 3.2

     * @param aPublisher is reference to publisher which is publishing.

     * @param aContent is content id.

     * @param aBuf is data buffer.

     * @param aPriority is priority of the content.

     * @return KErrNone if publish is successful, otherwise system wide error code.

     */

    virtual TInt Publish( MAiDeviceStatusPublisher& aPublisher, TInt aContent,

                          const TDesC8& aBuf, TInt aPriority ) = 0;

    /**

     * Publish resource.

     *

     * @since S60 3.2

     * @param aPublisher is reference to publisher which is publishing.

     * @param aContent is content id.

     * @param aResource is resource id.

     * @param aPriority is priority of the content.

     * @return KErrNone if publish is successful, otherwise system wide error code.

     */

    virtual TInt Publish( MAiDeviceStatusPublisher& aPublisher, TInt aContent,

                          TInt aResource, TInt aPriority ) = 0;

    /**

     * Clean content.

     *

     * @since S60 3.2

     * @param aPublisher is reference to publisher which is publishing.

     * @param aContent is content id.

     * @param aPriority is priority of the content.

     * @return KErrNone if publish is successful, otherwise system wide error code.

     */

    virtual TInt Clean( MAiDeviceStatusPublisher& aPublisher, TInt aContent, TInt aPriority ) = 0;

    };

#endif // M_AIDEVICESTATUSCONTENTOBSERVER_H