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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: An observer interface for the tree list component.
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*
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*/
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#ifndef M_FSTREEVISUALIZEROBSERVER_H
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#define M_FSTREEVISUALIZEROBSERVER_H
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#include "fstreelistconstants.h"
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/**
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* MFsTreeObserver defines an interface which is used to observe tree list
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* events.
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*
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* Observer of the tree list is notified of changes in the tree list through
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* this interface with appropriate events.
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* @code
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*
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* @endcode
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*
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* @lib
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*/
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NONSHARABLE_CLASS( MFsTreeVisualizerObserver )
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{
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public:
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enum TFsTreeVisualizerEvent
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{
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// <cmail> "Base class modifications for using touch"
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/**
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* Action started for selected tree item.
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*/
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EFsTreeItemTouchAction,
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/**
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* Long tap action started for selected tree item.
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*/
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EFsTreeItemTouchLongTap,
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/**
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* Touch focus for list gained.
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*/
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EFsTreeItemTouchFocused,
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// </cmail>
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/**
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* An item received focus.
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*/
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EFsTreeItemFocused,
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/**
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* Focus will be moved to the specified item/node.
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* Event triggered just before an item gets focus.
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* No action required.
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*/
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EFsTreeItemWillGetFocused,
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/**
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* An item has been selected.
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*/
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EFsTreeItemSelected,
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/**
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* An item with menu has been selected.
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*/
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EFsTreeItemWithMenuSelected,
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/**
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* Right arrow pressed.
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*/
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EFsTreeKeyRightArrow,
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/**
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* Left arrow pressed.
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*/
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EFsTreeKeyLeftArrow,
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/**
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* Event generated when the list is fully hidden.
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*/
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EFsTreeListVisualizerHidden,
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/**
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* Event generated when the list is fully shown.
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*/
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EFsTreeListVisualizerShown,
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// <cmail>
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/**
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* Event generated when a single node is collapsed.
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*/
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EFsTreeListItemCollapsed,
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/**
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* Event generated when a single node is expanded.
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*/
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EFsTreeListItemExpanded,
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/**
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* Event generated when all nodes are collapsed.
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*/
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EFsTreeListCollapsedAll,
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/**
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* Event generated when all nodes are expanded.
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*/
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EFsTreeListExpandedAll,
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// </cmail>
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/**
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* Change focus visibility
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*/
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EFsChangeFocusVisibility
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};
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public:
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/**
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* Observer of the tree list is notified of changes in the tree list
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* through this function.
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*
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* @param aEvent Event which happend in the tree list.
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* @param aId Id of the node/item associated with the event. KFsTreeNoneID
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* means that the event is not associated with a node/item.
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* @param aPoint Event coordinates. Only valid for touch events.
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*/
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// <cmail> Touch
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virtual void TreeVisualizerEventL(
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const TFsTreeVisualizerEvent aEvent,
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const TFsTreeItemId aId = KFsTreeNoneID,
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const TPoint& aPoint = TPoint( 0,0 ) ) const = 0;
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// </cmail>
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};
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#endif // M_FSTREEVISUALIZEROBSERVER_H
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