sl@0: /*
sl@0: * Copyright (c) 2004 Nokia Corporation and/or its subsidiary(-ies). 
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description:  This file contains definitions of GlobalAudioSettings observer.
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: 
sl@0: #ifndef MGLOBALAUDIOSETTINGSOBSERVER_H
sl@0: #define MGLOBALAUDIOSETTINGSOBSERVER_H
sl@0: 
sl@0: // CONSTANTS
sl@0: 
sl@0: // CLASS DECLARATION
sl@0: 
sl@0: /**
sl@0:  *  An interface to Global Audio Settings observer callback functions.
sl@0:  *
sl@0:  *  This serves as the method of communication between the client and the
sl@0:  *  CGlobalAudioSettings object.
sl@0:  *
sl@0:  *  The class is a mixin and is intended to be inherited by the client class
sl@0:  *  that is interested in observing the global audio settings. The functions
sl@0:  *  encapsulated by this class are called when events occur which causes device
sl@0:  *  audio settings to be changed that affects the overall audio behavior.
sl@0:  *
sl@0:  *  @lib GlobalAudioSettings.lib
sl@0:  *  @since 3.2
sl@0:  */
sl@0: class MAudioSettingsObserver
sl@0:     {
sl@0: public:
sl@0:     enum TGASEventId
sl@0:         {
sl@0:           EGASWarningTones,
sl@0:           EGASMessageTones,
sl@0:           EGASSilentProfile,
sl@0:           EGASVibra,
sl@0:           EGASMessageToneName,
sl@0:           EGASEmailToneName,
sl@0:           EGASRingingType,
sl@0:           EGASVideoCallToneName,
sl@0:           EGASRingingTone1Name,
sl@0:           EGASRingingTone2Name,
sl@0:           EGASKeyPadVolume,
sl@0:           EGASSilenceMode
sl@0:         };
sl@0: 
sl@0: public:
sl@0:     /**
sl@0:     * Invoked by the Global Audio Settings object when audio setting has changed.
sl@0:     *
sl@0:     * @since 3.2
sl@0:     * @param CGlobalAudioSettings& A reference to Global Audio Settings object
sl@0:     *   which invoked the callback.
sl@0:     * @param aSetting Specific id of the audio setting that changed.
sl@0:     */
sl@0:     virtual void SettingsChanged(CGlobalAudioSettings& aGlobalAudioSettings, TGASEventId aSetting) = 0;
sl@0:     };
sl@0: 
sl@0: #endif      // MGLOBALAUDIOSETTINGSOBSERVER_H
sl@0: 
sl@0: // End of File