/*
* Copyright (c) 2004 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: Pure virtual base class for viewer observer.
*
*/
#ifndef IHLVIEWEROBSERVER_H
#define IHLVIEWEROBSERVER_H
// INCLUDES
#include <e32std.h>
// CLASS DECLARATION
/**
* MIHLViewerObserver
*
* Pure virtual base class for viewer observer.
* @lib IHL.lib
* @since 3.0
*/
class MIHLViewerObserver
{
public:
/**
* This callback is currently not supported!
*
* Notifies client of viewer events.
* Event codes are defined in viewer header.
* Leave situation is handled in ViewerError() callback.
* @since 3.0
* @param aEvent Type of event.
* @param aEventCode1 Event specific code 1.
* @param aEventCode2 Event specific code 2.
*/
virtual void ViewerEventL( TInt /*aEvent*/, TInt /*aEventCode1*/, TInt /*aEventCode2*/ ) {}
/**
* Notifies client when viewer bitmap content is changed.
* Leave situation is handled in ViewerError() callback.
* @since 3.0
*/
virtual void ViewerBitmapChangedL() = 0;
/**
* Notifies client if error occurs in viewer.
* @since 3.0
* @param aError System wide error code.
*/
virtual void ViewerError( TInt aError ) = 0;
};
#endif // IHLIMAGEVIEWEROBSERVER_H
// End of File