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/*
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* Copyright (c) 2007 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description: receives key pressed notifications
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*
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*/
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#ifndef M_MMDRAGANDDROPOBSERVER_H
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#define M_MMDRAGANDDROPOBSERVER_H
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/**
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* Used by Multimedia Menu widgets to notify about dragging events.
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* Whenever a drag begins HandleDragStartL() is invoked.
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* When the highlight changes during drag, HandleDragOverL() is invoked.
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* When item is dropped, HandleDragStopL() is invoked.
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* The set of the three methods fully notifies the observer about the state
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* of the drag.
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*
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* @code
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* @endcode
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* @lib mmwidgets
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* @since S60 v3.0
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* @ingroup group_mmwidgets
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*/
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class MMmDragAndDropObserver
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{
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public:
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/**
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* Method is invoked on the observer, when the dragging starts.
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*
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* @since S60 v5.0
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* @param aModelItemIndex Index of item that has started dragging.
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*/
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virtual void HandleDragStartL( TInt aModelItemIndex ) = 0;
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/**
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* Method is invoked on the observer, when highlight changes
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* while dragging.
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*
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* @since S60 v5.0
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* @param aModelItemIndex Index of item that the dragged item hovers over.
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*/
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virtual void HandleDragOverL( TInt aModelItemIndex ) = 0;
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/**
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* Method is invoked on the observer, when the item is dropped.
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*
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* @since S60 v5.0
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* @param aModelItemIndex Index of item on which the draging stops.
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*/
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virtual void HandleDragStopL( TInt aModelItemIndex ) = 0;
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/**
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* Method is invoked on the observer, when the dragged item index changes.
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*
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* @since S60 v5.0
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* @param aModelItemIndex Index of item on which the draging stops.
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*/
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virtual void HandleDraggedIndexUpdatedL( TInt aModelItemIndex ) = 0;
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/**
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* Method is invoked on the observer, when the move item event is needed.
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*
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* @since S60 v5.0
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* @param aRecipientId Index of item on which the move event invokes.
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* @param aEventParameters Event parameters.
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*/
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virtual void HandleTriggerMoveItemL( const TInt aRecipientId,
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CLiwGenericParamList* aEventParameters) = 0;
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};
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#endif // M_MMDRAGANDDROPOBSERVER_H
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