/*

* Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Symbian Foundation License v1.0" to Symbian Foundation members and "Symbian Foundation End User License Agreement v1.0" to non-members

* which accompanies this distribution, and is available

* at the URL "http://www.symbianfoundation.org/legal/licencesv10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  location triggering server client library

*

*/

#ifndef LBTTRIGGERCHANGEEVENTOBSERVER_H

#define LBTTRIGGERCHANGEEVENTOBSERVER_H

#include <lbttriggerchangeevent.h>

/**

 * The class defines the interface for receiving 

 * trigger change event.

 *

 * This interface is used together with class 

 * CLbtTriggerChangeEventNotifier.

 *

 * @lib lbt.lib

 *

 * @since S60 5.1

 */

class MLbtTriggerChangeEventObserver

    {

public:

    /**

     * This function is called when one or more triggers

     * are changed.

     *

     * Note, the leave of this function is trapped and 

     * ignored in class CLbtTriggerChangeEventNotifier. 

     * 

     * @param[out] aEvent Will contain the information when 

     * a trigger change event occurs.

     */

    virtual void TriggerChangedL(

        const TLbtTriggerChangeEvent& aEvent) = 0;

    };

#endif //LBTTRIGGERCHANGEEVENTOBSERVER_H